Top of the best pumps with a cutting mechanism. Fecal pump with grinder: tips for choosing and an overview of the best brands

Equipment for autonomous sewerage should serve for a long time, work flawlessly and not upset with breakdowns. How to decide on the model and buy the most suitable fecal pump with grinder? Indeed, the list of duties of this technique includes not only the pumping of aggressive liquids, but also the processing of large organic particles.

For adherents of country life, we will tell in detail everything about the design features and guidelines for the competent choice of a fecal pump. With our help, you can easily find and purchase the optimal model with the required performance and excellent technical characteristics.

The article presented to your attention describes in detail the types of fecal pumps, outlines their differences in design and operation. For potential buyers, a rating of models in demand by the market is given. The information is supported by photographs and video instructions.

Industrial production has developed and released to the consumer market several types of such technological equipment.

In particular, future users are offered:

• submersible devices;
• devices are semi-submersible;
• external devices.

Each of the fecal models differs in technical capabilities and is designed for specific pumping conditions. In order to select equipment on the merits, it is recommended to obtain information on the degree of contamination of the working environment, as well as information on the conditions in which the pump will be operated.

Fecal submersible pumps are widely used in various sectors of the national economy. The same devices are actively used by owners of private suburban real estate.

The submersible equipment is arranged in the form of a hermetically sealed structure, which, together with the electric motor, can be submerged into the thickness of the liquid medium. Semi-submersible fecal apparatus are products in which only the pumping part is placed in the liquid.

Finally, external fecal pumps equipped with a grinder do not come into direct contact with the liquid medium at all. Contact is made through a soft sleeve or a rigid pipeline.

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Creating comfortable living conditions in a private house is by no means limited to equipping heating, ventilation and air conditioning systems, ensuring an uninterrupted supply of water and electricity, performing high-quality finishes and saturating the premises with comfortable furniture and modern household appliances. You also have to think about the "dirty" side of the issue, invisible in everyday life, but from this it does not lose its extreme importance. We are talking about the problem of collection and disposal of various wastes that inevitably accumulate in the process of family life.

One of the solutions is to order a sewage truck to pump out accumulated sewage as the cesspool fills up. But in some cases it is quite possible to manage on your own, finding the possibility of waste disposal. But in this case, special equipment will be required, in particular, a fecal pump with a chopper for cesspools. How to choose such a device, and what functions it can perform - is described in this publication.

General arrangement of a fecal pump with a chopper

To begin with, let's define the types of fecal pumps, which depend on the place of their installation.

• Surface fecal pumps are self-priming devices capable of lifting a viscous liquid with a significant amount of contaminants from a certain depth through a sleeve lowered into a sewage pit. The sewage trucks familiar to most owners of private houses are equipped with just such a surface self-priming pump.

There are practically no advantages to such a scheme in terms of domestic use. Such pumps are usually very large and heavy, otherwise they cannot cope with the suction of a viscous liquid from a depth. Such bulkiness entails the need for a stationary installation, which, in turn, will require the creation of certain conditions - protection from precipitation and negative air temperatures. Most often, surface pumps are used at treatment plants, at enterprises or in agricultural complexes. Purchasing such a device for a private home is an extra worry, although it will certainly cope with the task of cleaning an ordinary cesspool.

In addition, the operation of the electric drive is always accompanied by noise, which is also enhanced by the cooling of the pump - an air circuit is used here, that is, a fan located on the motor axis, covered with a casing.

• Semi-submersible fecal pumps are almost always permanently installed equipment requiring special installation. The point is that the electric drive (motor) is located on top, in the air, and the pump working chamber is immersed in the waste collector. They are connected by a long shaft for transmitting torque.

Such pumps have proven themselves well at large facilities, for example, at livestock complexes, where regular, almost daily pumping of accumulated waste is required. They also find application in an extensive sewerage system tied to one volumetric drive, which also has to be emptied quite often.

But in a household environment, the use of such equipment, which is bulky, difficult to install and requires space, is completely unreasonable.

• The best choice for domestic use is a submersible fecal pump. They are small in size, easy to use periodically or permanently, unpretentious, work is not accompanied by noise. They do not require air cooling, since during operation they are in a liquid medium that removes heat well from the electric drive.

Despite the very large variety of models on sale, and a significant variation in prices, almost all submersible fecal pumps are arranged in approximately the same way.

All such pumps are a vertically located cylinder. The upper part - the electric drive unit, is protected by a metal case (pos. 1), less often - plastic. The power cable (pos. 2) enters the housing from above, ensuring complete sealing of the entry point. For carrying the pump and for hanging it in a cesspool on a cable, a metal handle (pos. 3) is rigidly fixed on the body. Special eyelets for fixing the suspension can also be provided.

Inside the housing there is an electric drive - a stator (pos. 4) and a rotor (pos. 5) which is mounted on a vertical shaft (pos. 6) to transfer rotation to the pump part. The shaft is supported by bearing groups (pos. 7).

Between the electric drive and the working chamber of the pump there is an oil chamber (pos. 8) - a sealed cavity filled with special technical oil. It performs three functions at once - it ensures a tight fit of the sealing collars to the rotating shaft, provides constant lubrication of the bearings and serves to remove heat, that is, to cool the friction units.

Below is the pump itself - the pumping part. This is a body (pos. 9) of a certain configuration - a "snail", in which the working chamber is located. From below, the chamber is usually closed with a lid (pos. 10), providing access for the pumped liquid in the center. Often the special shape of this lid also plays a role in the shredding of waste.

Inside the chamber there is an impeller (pos. 11) with an impeller. The rotation of the wheel creates a powerful centrifugal acceleration of the liquid, a significant increase in pressure at the periphery of the chamber with a rarefaction in the center, which leads to the formation of a high-pressure flow that exits through a special pipe (pos. 12). The branch pipe can be stationary, directed upwards or perpendicular to the pump axis, or it can have a flange connection, and then the direction of the outlet flow can be changed if desired - up or to the side. The couple can have a groove for attaching a sleeve with a clamp, or a locking part - for special hoses, like firefighters, which, by the way, can also be included in the pump kit - as shown in the illustration.

Fecal pump

From below, either a support platform with holes for the passage of liquid to the working chamber (pos. 13) or special legs are attached to the pump - for reliable installation of the pump on a solid foundation.

As already mentioned, high-quality fecal submersible pumps are exposed by a cutting mechanism. Wastewater does not emit large concentrations of fibrous waste, paper, cloth, plastic bags, kitchen cleaners, etc. In order not to impede the operation of the pump impeller and to exclude the creation of plugs in the sleeve when pumping liquid, the cutting mechanism will crush these inclusions to sizes that will no longer be a serious hindrance.

Cutting mechanisms may vary slightly.

• One of the varieties - a sharply honed impeller with blades-knives is placed on the shaft in front of the chamber entrance.
• Another type is the impeller knife, the blades of which are tightly ground to the outer plane of the lower cover of the pump working chamber.

In fact, exactly the same principle as in a conventional home meat grinder

• The next variety - the knife has a cylindrical shape and is equipped with two cutting edges, and two protrusions are made at the inlet to the chamber. When rotating, the edges of the cylinder and the protrusions work on the principle of scissors.

• The knife can stand still, and the working pair to it, to create the effect of scissors, create the edges of the impeller blades.

• Finally, the impeller itself can have a very intricate shape with blades turning into sharply honed knives.

Which type is better is hard to say. When choosing a pump, it would probably be useful to clarify whether it is possible to purchase spare parts for repairing the chopper, and how much they will cost.

Many pumps are immediately equipped with a water level switch. This allows them to be included in the automated pumping system of storage tanks. The control unit will turn off the pump when the tank is drained to a predetermined level, and turn it on when the water rises again to a certain level. The presence of a float switch does not interfere with the use of the pump in the usual, “manual” mode, however, the cost of such devices will be somewhat higher.

Of course, different models from leading pump manufacturers may have their own design features, but the principle of the device outlined above will still remain the same.

What is the functionality of a fecal submersible pump?

The direct purpose of the fecal pump is clear, but it is not limited to this at all. Its unpretentiousness and high performance open up many other applications in a variety of cases that owners of their own houses have to face.

• If the site is located in a lowland or on swampy soils, then a common occurrence is often the accumulation of moisture in the basement or basement. If you equip them with pits for collecting water, then as they fill up, you can pump them out using the same fecal submersible pump. Often, the pump is installed in such pits and permanently, and operates in automatic mode using a float switch.

• If the farm has a submersible fecal pump, then it will always help to cope with the consequences of the elements - flooded due to floods, heavy rains, sudden snowmelt or man-made accidents, basements or residential premises, wells, low-lying folds of the site, etc. The presence of a chopper allows you not to be afraid that dirt or debris that has entered the pump will hinder its operation.

• If a storm and (or) drainage sewage system is organized on the site, then the pump can also do a good job here. With its help, it is possible to prevent the overflow of wells or collectors, for example, during prolonged rains, when the drainage capacity of the wells is simply not enough. It can also be useful for emptying the last chamber of the septic tank - with its help, water is pumped out to filtration fields or even for some useful application.

Special bioactivators will help to clean the water in septic tanks and cesspools.

In vain, many owners of private houses ignore the use of special biological additives for autonomous sewers. are able to quickly process organic waste into water and harmless mineral sediment, improve the drainage capacity of storage wells, and eliminate unpleasant odors. More about this in a special publication of our portal.

• Artificial reservoirs created on the site need periodic cleaning and water replacement. And in this case, a submersible fecal pump may well come to the rescue, which is not afraid of mud deposits at the bottom.

• Finally, in the case when a natural reservoir is located in the immediate vicinity of the site - a lake or a river, a pump can also be used for irrigation purposes. Of course, with its very high performance, it makes no sense to supply water directly to the irrigation installations, but it will not take much time to fill the irrigation tanks.

In a word, such a useful device will definitely find application, not even counting its main purpose.

How to choose a fecal submersible pump?

The main criteria for evaluating a submersible fecal pump

If a decision is made to purchase a fecal submersible pump for a cesspool, a number of specific criteria should be followed when choosing.

• Pump supply voltage and power consumption. Almost all household-class fecal submersible pumps are designed to operate from a conventional 220 V 50 Hz network. Power indicators predetermine the remaining operational characteristics of the equipment - its performance, the pressure generated, the potential for pumping liquids of high viscosity or with a large amount of pollution.

For country conditions, a pump with a power of up to 500 watts is usually sufficient. But if you plan to regularly service an autonomous sewer in a permanent residence, then it is better to choose a device with a capacity of about 1 ÷ 1.5 kW.

As the power increases, the energy consumption also increases. But if the pump has good performance, then long-term operation is not expected - usually, even for pumping solid volumes of several cubic meters of water, 5 ÷ 10 minutes are enough, and in such a short period it will not "wind up" the electric meter in any sensitive way.

• The performance of a submersible pump is its ability to pump a certain volume within a unit of time. Usually for drainage and fecal pumps, this figure is expressed in liters per minute. Even the most "weak" pumps, as a rule, cope with a volume of about 150 l / min. The performance of pumps with a power of 1.5 kW or more can reach 500 ÷ 650 l/min! Half a ton per minute - even for a large capacity it does not take much time!
• Created pressure. This is a measure of the fluid pressure generated by the pump at the outlet. Typically, for pumping equipment of this class, this value is expressed in meters of water column. This pressure should be enough to lift liquid waste from the depth and deliver it along the horizontal section of the pipe (sleeve) to the disposal site. We must not forget about the horizontal section, especially since it is often necessary to work with viscous waste, and the hydraulic resistance of the pipe can be quite large. For an approximate calculation, you can focus on the following ratio - 1 meter of pressure created will ensure the movement of fluid along a 4-meter horizontal section.

Typically, household submersible fecal pumps are capable of creating a pressure of 10 ÷ 15, sometimes more than meters.

• Body material. Preference should still be given to metal models - they are more reliable. But it must be either cast iron or high-quality stainless steel. Wastewater is a very chemically aggressive environment, and ordinary steel will not last long in such conditions.

Pumps in different housings - cast iron, stainless steel and plastic

Cast iron, of course, is cheaper, but their pumps are quite massive, and this will need to be taken into account when choosing a suspension - a rope, cable or chain. In addition, cast iron should be handled with a certain degree of caution - the alloy is brittle, and can crack with an accentuated impact.

Stainless steel pumps are lighter and look prettier (if that matters in this case...). But such improvements, of course, are reflected in the cost of the model.

Plastic pumps cause a lot of controversy, and they have not yet won full trust from users. It is clear that modern polymers often even surpass metals in their strength properties, but certain concerns still remain.

• If it is planned to automate the pumping process, or in order to insure yourself in case of your own inattention, it is better to choose a pump that is immediately equipped with a float water level sensor with a switch.

The automation associated with the float switch will prevent the pump from running dry after the well or pit has been emptied

If you plan to use the pump only in manual mode, then you can save on this option.

• The pump cannot be lowered to any depth relative to the water surface - this parameter is also specified in the technical specifications of the product.
• For any pumps designed for pumping dirty water, and for fecal pumps in particular, the allowable size of solids is important. It is usually indicated in millimeters, for example, up to 30 mm - this is considered a good indicator.
• If hot water is to be pumped, the pump must be designed for such operating conditions. Usually, most fecal submersible pumps are designed for cold water - with temperatures up to 35 ° C.
• The pump is cooled from the outside by the liquid in which it is immersed. But as it is pumped out, the power unit can protrude above the water and begin to warm up. Therefore, the built-in protection of the pump against overheating will never be superfluous - when a certain critical temperature is reached on the stator windings, the electrical circuit will be interrupted.

If there are frequent interruptions with a stable power supply in the area of ​​\u200b\u200bresidence, then the model must have protection against power surges or an extended range of permissible

• The reputation of the equipment manufacturer is important. Of course, it is best to choose models of well-known brands, foreign and domestic, at the same time specifying how service is organized in the region and how actions will be carried out in case of a complaint about the purchased pump - immediate replacement, refund, sending to the factory for repair, etc. P.

Fecal pumps of the Wilo, Grundfos, Unipump, Dzhileks, Pedrollo, Herz, Whirlwind, Metabo, Calpeda, ESPA, Quattro Elementi brands enjoy unconditional authority , "Sturm", "Sprut" and others. But it must be a truly original product, and not a cheap fake for it. Therefore, it is necessary to purchase such equipment only in specialized stores, after carefully reading the accompanying documentation.

The following will be a brief overview of the popular models of submersible fecal pumps

Overview of fecal pump models

Model name	Illustration	Brief description of the model	Approximate price level
"Dzhileks Fekalnik 255/11 N" (Russia)		Products of a Russian company, from development to production. Stainless steel body. Pump power - 1100 W. The created pressure is 11 m of water. Art. Productivity - 255 l / min. Permissible immersion depth - 8 m. Float switch. Overheat protection. Weight - 7.5 kg. Stepped connecting pipe for ¼, ½ or 1 inch hoses. Permissible size of solid inclusions - 35 mm.	8200 rub.
STURM WP9709SW (brand - Germany, assembly - China)		A fecal pump with a chopping device that has earned a lot of high ratings from users. Cast iron body. Power 900 W. The created pressure is 12 m of water. Art. Immersion depth - up to 5 m. Float switch. Permissible size of inclusions - up to 36 mm. Weight - 17.6 kg. Outlet pipe - 2 inches.	8500 rub.
"Whirlwind FN-1100L" (brand - Russia, assembly - China)		High-quality fecal pump of Russian design. Combined housing - stainless steel + cast iron. Power - 1100 watts. The created water pressure is 9 m. Productivity - 233 l / min. Crushing mechanism. Float switch. Internal anti-air valve. Pipe - 2 inches. The mass of the device is 17.6 kg.	11600 rub.
"QUATTRO ELEMENTI PROF Sewage 1100F Ci-Cut" (brand - Italy, assembly - China)		An excellent model developed by a well-known Italian company. The body is a combination of stainless steel and cast iron. Power - 1100 watts. Productivity - 233 l/min. The created pressure is 7 m of water. Art. Knife grinder. Float switch. Built-in overheating protection. The maximum size of solid fractions is up to 15 mm. Weight - 19 kg. It is famous for the durability of work, undemanding maintenance.	14000 rub.
Herz WRS25/11-180 (Germany)		High quality pump designed for the most extreme operating conditions. Body - stainless steel + cast iron. Power - 800 watts. The created water pressure is 14 m of water. Art. Productivity - 260 l / min. The maximum diving depth is 8 m. Knife grinder made of tool stainless steel. The maximum water temperature is up to +40 degrees. Weight - 28 kg. Outlet - 2 in., on a flange that allows reversal of flow direction.	13000 rub.
Pedrollo BC 15/50 (Italy)		One of the leaders in terms of workmanship and high performance. Body - stainless steel, working chamber - cast iron. Supply voltage - 380 A, drive power - 1100 W. The created pressure is 14 m of water. Art. Increased productivity - up to 800 l / min. The maximum diving depth is 5 meters. Float switch, all degrees of protection. The upper permissible temperature limit is +40 degrees. The branch pipe is threaded, 2 inches. Pump weight - 15 kg. Permissible size of solid inclusions - up to 50 mm.	28800 rub.
Wilo Drain TP 50/TP 65 (Germany)		Model of the highest quality, German development and production. The body of the power block is stainless steel, the working chamber is cast iron. Drive power - 1000 W. The created water pressure is 9 m of water. Art. Productivity -433 l/min. The maximum diving depth is 10 m. Float switch - optional, it is possible to purchase a model without it, but a special plug is provided for connection. Permissible size of solid inclusions - up to 44 mm. The impeller is single-blade centrifugal or free-vortex.	25000 rub.
"Grundfos SEG 40.09.2.1.502" (Denmark)		Fecal submersible pumps of the highest quality category. The body is cast iron. Drive power - 1300 watts. The created pressure is 15 m of water. Art. Productivity -250 l/min. Flange adapter for 2" pipe. All modern levels of protection. Built-in water level switch that does not require an external float system or an external automation unit. Possibility of quick adjustment of the gap between the impeller and the housing. Shortened shaft, reducing the load on the bearing block. Efficient waste shredding system.	47000 rub. and higher

Video: operation of a fecal pump with a chopper - Grundfos SEG

A little from personal experience

First, a brief background on the issue.

The scene of action is the city of Bendery, Moldova, Transnistria. The distance from the house to a fairly large river by European standards, the Dniester, is about 500 meters, but the height difference is quite significant, about 6 meters.

We bought the house 14 years ago - in September 2002. Before that, no one lived in it for a couple of years. From the "amenities" there was only a tap in the house - there was no toilet, no bath, no shower. The waste pit is located in the yard, the depth is 3.5 meters, concreted walls and free drainage from below. From above it is closed by a cast-iron hatch. By the time of purchase, it was, of course, almost empty.

In the very first months of living, all communal amenities were created, including a bath, toilet, washbasin, a washing machine was installed - all of them were tied to this particular pit. The only exception was the kitchen - due to the peculiarities of the location of the premises of the house. The drain from the kitchen was taken to another pit, which serves as a storm well and is located near the gate to the courtyard.

Why is this being told? The fact is that for 12 years, the intensive use of water by a family of 4 has never led to an overflow of the sewage pit. Moreover, someone took a bath - almost every day. But two years ago, while doing small-scale work in the bathroom, I decided at the same time to call a sewage truck and clean the cesspool. There was no good adviser then - DO NOT TOUCH THE PIT until it copes with its drainage functions. And I didn’t have the mind to read forums on the Internet - on this subject, ladies are given a lot of recommendations of the same plan.

In a word, after the pit was pumped to the bottom, serious problems began. Just a couple of months later, water began to seep up through the hatch. Again the call of the car - and history repeats itself with enviable regularity. Apparently, the hydrological balance of the well and the surrounding soil was disturbed, and the drainage quality fell several times.

It's a shame that the arriving car literally pumped out only water, since there is a minimum of dense waste. I have been using bioadditives for a long time, and the bacteria work well, so the sludge practically does not accumulate.

Giving a lot of money for pumping water is, of course, unreasonable. Each call is 200 rubles of ours (the approximate ratio with the Russian ruble is 1:5.5, that is, one pumping out is about 1,100 rubles). And after a year and a half of torment, it was decided to distill water from the sewage pit to the storm pit, into which, as already mentioned, the kitchen sewerage was also removed. From there, the water goes into the drainage “with a whistle”, and an approximately stable level is always maintained in the pit.

Laying pipes for overflowing water by gravity was considered unprofitable, since the entire yard is paved with concrete slabs (still from the old owners). And so a fecal submersible pump was purchased.

The model cannot be called a brand, but these are the features of our unrecognized region - high-quality equipment with a factory warranty comes here very hard. The packaging indicates that this is a Russian production, Chelyabinsk, but no accompanying documents were attached, although the pump was purchased at the largest specialized plumbing store in the city.

However, the price of the issue was very suitable - exactly 1000 of our rubles (for Russian, therefore - 5500 rubles).

And with the help of this pump, water has already been pumped from one pit to another four times - that is, 800 rubles for calling a sewer has already been “recaptured”.

The last time this was done was this morning, June 4th. For more than a week there were heavy rains, and the cesspool “made itself felt”.

The pumping process has already been worked out, and is carried out by one person literally in 15-20 minutes.

Illustration	Brief description of the operation to be performed
	Here it is - a cast-iron hatch of a cesspool. Located in the center of a paved courtyard.
	The yard has a rather significant slope towards the gate, and in front of the gate there is a storm gutter covered with a grate. It leads to the second pit, where we will pump water from the first. The distance in a straight line between the pits is about 12 meters.
	A small "defeat" was caused by the fact that work had begun on installing a new plastic hatch on the storm pit - there was a wooden one, already pretty rotten. Work was temporarily suspended due to heavy rains. The hatch frame has already been installed, but has not yet been completely walled into the mortar.
	This is the sunroof itself, waiting for final installation.
	From the very beginning, it was decided not to use a long flexible sleeve, in order to avoid twisting, chafing, etc. A set of three-meter sewer pipes 50 mm was purchased - and for the money it turned out to be more profitable. The cat appears in the frame for the second time: this is not because I like to “post cats” - this rogue just loves to “help”, no matter what I do.
	For direct connection to the pump, a piece of flexible hose 50 mm long was used, to the depth of lowering the pump into the pit. By the way, the standard clamp with a bolt that came with the pump turned out to be of little use - it was replaced with a worm. On the other hand, the sleeve ends with a 90° bend - already for connection to the pipe.
	During the second pumping in a row, a small emergency happened - a strong pressure at the place of the change in the direction of the flow tore off the outlet from the socket of the straight section of the pipe. The “odorous soul” was then nevertheless managed to be avoided, but then measures were taken - the connection is fixed with self-tapping screws: they are not briefly removed or screwed into the drilled holes.
	Assembling a straight section is a matter of one minute ...
	On the opposite side, a flexible sleeve is also used. This is due to the fact that it is necessary to bring the pipe into the "stormwater" channel. Such a measure is temporary, and after the hatch is ready, a straight structure ending in a rectangular outlet will be used.
	The storm grate is raised and the pipe is led into the channel leading to the storage and drainage well (pit).
	To hang the pump in the cesspool, the most inexpensive option is used - a 12 mm nylon rope - this will be quite enough. For ease of lowering and lifting, knots are imposed on it. The loop will be hung on a piece of steel corner laid over an open hatch.
	Everything is ready - you can open the hatch. Yesterday the water came out. Today, the level has already dropped somewhat, but it is still critical. Any use of even 50 liters of water will result in an overflow.
	Carefully bleed the rope (in no case - not by the power cable!), We lower the pump into the cesspool.
	Full readiness to start pumping. The procedure was originally planned to be carried out in the visual control mode, so the float switch was not tied up.
	We turn on the power cable to the network - and observe the process.
	The rumble of the pump is almost inaudible, only a slight vibration. The water level is dropping rapidly.
	At the other end of the "main" the flexible hose was inflated by the pressure of the pumped water.
	The transfer lasted 8 minutes. About three cubes of water (the pit expands much from the neck down) are transferred to the drainage well. Now there will be no problems for 2-3 months.
	It is advisable to flush the pump immediately. We put it in a container with water, turn it on for 10 ÷ 15 seconds. At the same time, we supply water to the container through a garden hose. The inside of the working chamber of the pump and at the same time all the sleeves and pipes are washed.
	The cesspool hatch is in place. We disassemble the pipe connections, and put them in the garage for storage until the next time.
	The pump and the sleeve attached to it are thoroughly rinsed from above with water pressure, and can also be sent for storage.

So, the whole procedure took about 15-20 minutes, without the involvement of assistants, and this is also taking into account pauses for photography. By the way, the arrival of a sewage truck into the yard and its work used to take even more time.

Conclusions:

• The first one is that I don’t regret purchasing a fecal submersible pump, as I got the opportunity to periodically clean the cesspool from water on my own. The call of a sewage truck is postponed for a very distant future, at a time when circumstances will already force the pumping out of bottom silt deposits. But, judging by the observations, such a need is not expected in the next few years.
• And the second. Guided by my own experience, I will take the liberty of giving advice - do not pump out the cesspool to dryness with a sewage machine, while it is able to cope with the drainage of water on its own! I won't let sewers to my second, "working" well for any money!

Areas of application for household and industrial fecal pumps with grinders. Fecal pumps with choppers: the principle of operation of devices and the main types of household units

Owners of country houses cannot always solve the problem of polluted drains by connecting to central communications. A good solution to the problem in this case is a fecal pump with a grinder, using which it is convenient to pump out sewage.

Fecal pump with grinder for sewage in a private house

A fecal pump with a chopper is indispensable in cases where, for any reason, it is problematic to equip a septic tank, and the owners of country houses have to make do with a cesspool. Special pumping units help to solve the problem of cleaning cesspools.

After all, these devices are not afraid of pebbles, grains of sand and any kind of solid debris, easily pumping out any water: with the remnants of silt and dirt, littered with household waste.

The pump with a grinder allows you to easily maintain the sewage system and pump out dirty water

With their help it is much easier:

• maintain toilets and storm sewers;
• empty the outdoor pool for the winter;
• clean sediment from tanks and pits;
• eliminate spring floods in basements and basements.

It is mandatory to install a fecal pump with a chopper in houses where the internal sewer wiring is made with pipes having a small diameter. It is rather problematic to keep track of which of the family members, through negligence or on purpose, throws small objects into the toilet.

Installed behind the toilet, a household fecal pump with a grinder will easily grind all solid particles that have fallen into it, forcibly discharging effluents into a centralized riser.

Installation of a fecal pump behind the toilet in the house

The installation of industrial fecal pumps also helps to solve the issue of ensuring the uninterrupted operation of sewers in public places, where the daily flow of visitors often leads to a serious load on the system.
Unfortunately, not all people have an idea about the culture of behavior and the concept of the rules for using showers and latrines, throwing objects into the toilet that can clog pipes. Due to the ability of industrial fecal pumps to pump water with inclusions, the size of which reaches 35 mm or more, it will not be difficult to solve this problem.

The principle of operation of the device

The fecal pump with a chopper is a unit in the form of a small container, inside of which a cutting device is installed and the pump itself is mounted. When effluent enters the tank, the automation system starts the grinding mechanism. Particles crushed by a knife to a gel-like state are discharged into the pipeline together with water under the action of a pump.

Scheme: the principle of operation of the fecal pump

The fecal pump knife block can be one of several ways:

• The impeller has a conical screw shape with sharpening along the outer part of the blades. It creates centrifugal pressure of liquid in the working chamber.
• The blades of the impeller are adjacent to the bottom wall of the cylinder, creating a scissor effect.
• When the knives are installed in a separate block before entering the working chamber, but coinciding with the axis of the impeller itself.

Unlike drainage counterparts, fecal pumps are equipped with special devices for grinding various kinds of inclusions and a strainer that traps solid elements. Therefore, for cleaning cesspools filled with sewage with solid particles, such devices are ideal.

Household and industrial models: what's the difference?

On sale there are installations for domestic and industrial use. Both are designed for constant contact with alkalis, acids and all sorts of aggressive liquids.

Industrial sewage pumps

Important: In household fecal pumps, components and parts are made of impact-resistant plastic, resistant to chemical attack. In industrial pumps, the casing and working chambers are made of stainless steel and solid cast iron. As a result, they are distinguished by higher performance parameters and a longer service life.

But still, the main difference between household and industrial pumps is the performance of the units, which largely depends on their power. Therefore, when choosing a device, one should focus on the number of people living in the house, as well as the maximum depth of the cesspool and the distance to the point where sewage will merge.

This approach will prevent unnecessary costs, since the difference in cost between industrial pumps with grinders and their household counterparts is quite large.

Types of pumping units

Pumps with a chopper are submersible, semi-submersible and surface type. They can be mounted permanently, or temporarily installed for one-time work.

Submersible option

The unit is a monoblock designed for complete immersion in a liquid medium and installation at the bottom of the storage tank. Submersible fecal pumps with a chopper are used for periodic pumping of wastewater, for example: cleaning a toilet and a cesspool.

Submersible sewage pump

They are distinguished by high productivity, due to which they are widely used not only in the private sector, but also in industry. They are out of competition in terms of the degree of waterproofing, as well as resistance to adverse environments.

Important: Household units with a power of 40 kW can easily lift up to 20 meters up to 400 liters of liquid per hour.

Their installation involves the arrangement of a "seat" equipped with metal guides, allowing the pump to be positioned in the right direction. A rope or a strong cable is provided for lowering the unit. The pump is simply immersed along the guides, "seated" on the nozzle.

The only drawback of such devices is the limitation of temperature conditions. Since the motor of a submersible pump is cooled by the pumped liquid itself, its temperature should not exceed 40°C. To prevent the engine from overheating from running dry, many models are equipped with an automatic shutdown system activated by a float switch.

Semi-submersible models

Such devices are mounted on the surface by means of a special float. Only the pump part is immersed in the drains, and the engine remains outside the sides of the cesspool. The immersion depth of the unit is limited by the length of the hose.

Operation of a submersible fecal pump

An important point: The diameter of the channels in household semi-submersible pumps is somewhat smaller and, therefore, they are rarely equipped with a cutting mechanism. This factor significantly limits the scope of their application.

Basically, such units are used to remove oily and liquid waste, as well as cleaning toilets from fecal matter with solid inclusions, the diameter of which does not exceed 20-50 mm.
Unlike submersible models, semi-submersible pumps are made of materials that are not able to effectively resist corrosion. But, if you focus on the principle of operation of such devices, you can not focus on this parameter.

surface aggregates

For surface models equipped with a grinder, the cutting mechanism is located near the outer edge of the sump, and only the suction hose is immersed in the liquid. Outdoor household pumps are easy to install. Among the main advantages of such units it is worth highlighting:

Surface pump for sewage in a private house

• Low cost in comparison with other types of fecal pumps;
• Can be used for cleaning cesspools and toilets located at a distance from each other;
• The ability to pump liquid, the temperature of which reaches 100°C. The maximum size of solid inclusions is 75 mm.
• The engine of the unit is cooled by the action of air and the contact of the pump with the pumped liquid is excluded, which helps to extend the service life of the unit.
• But still, surface devices are the least widespread, since their use is associated with the risk of clogging the receiving sleeve with waste even before it reaches the chopper knives.

In terms of technical characteristics, they are significantly inferior to semi-submersible and, even more so, submersible counterparts. Suction height of external pumps does not exceed 8.5 meters.
Such units are not intended for stationary use, since their bodies do not have waterproofing.

For the same reason, they cannot be used at sub-zero temperatures. For the operation of surface pumps, it is desirable to equip an additional canopy.

Sewerage arrangement with a pump: video

A fecal pump is a type of equipment that is little known to the layman. And only when faced with the need to clean the cesspool or drain the home pond, the owners begin to think about what pumping equipment they need to purchase. In most cases, the buyer has to rely on the honesty of the sales assistant who advertises a particular brand.

It is not possible to check how honest this person is. After all, the owners of a country house want to solve the problem of pumping dirty water as quickly as possible, and there is absolutely no time to familiarize themselves with the technical instructions.

The pump can be installed once at the very beginning of using the sewer, thereby ensuring independence from the sewers in the future.

Often, a pump for pumping fecal effluents is confused with drainage units.. Fecal pumps are more versatile devices that can cope with liquid of any degree of pollution, including silty bottom sediments - their pump also raises them to the surface without any problems. But the classic application is, of course, the organization of an autonomous sewage system in a country house or in a country cottage.

Any fecal pump is a compact pumping station for pumping, processing and further transportation of sewage waste. The unit can move liquids of a viscous consistency both in the vertical (up to 7 m) and horizontal (up to 100 m) directions. For the manufacture of the case, manufacturers of budget models often use impact-resistant plastic. Protection against dry running is carried out through a float that controls the level of liquid in the cesspool or sewer.

According to the technical characteristics of the pumps are:

• equipped with a chopper (knife) or designed without this mechanism;
• operating in cold or hot water.

Hot drain units work well with relatively clean water. They are often installed indoors - they are used to pump water from a bath, shower, washing machine and dishwasher. Such pumps are usually not equipped with a shredder, but there are more expensive models with knives that can cut paper and hygiene items that have fallen into the sewer.

Devices with a grinder for cold water work with liquids at temperatures up to 40 degrees. The chopper is located in the upper part of the body - this is the only drawback of such models. With the upper location of the knife, not all large particles of mechanical impurities are processed into a homogeneous mass, which complicates pumping.

The principle of operation of such pumps is the same for all models. Runoff water enters the basket, on which large debris settles. Fluid flows into the pump and starts the motor. If a grinding mechanism is provided, it is set in motion simultaneously with the pumping of sewage waste.

Primary requirements

One of the main conditions for choosing a fecal pump is the size of the mechanical particles for which the unit is designed. This parameter must be specified by the manufacturer.

The fecal unit has enlarged flow channels that can pass through garbage up to 8 centimeters in size.

All are conditionally divided into four groups depending on the area of ​​​​their application. Each individual group has its own requirements, which were initially taken into account by manufacturers:

• Without grinding mechanism for cold water. The pump operates at temperatures up to 40 degrees. This is the cheapest model on the market, designed for pumping liquid from pools, basements, cellars.
• No hot water dispenser. The units are capable of operating at a temperature of 90 degrees. Are established on drains in baths and saunas.
• With grinder for cold water. Operating temperature 40 degrees. These pumps are the most popular on the market. Are established on the drains taking away faecal masses from toilets. Feminine hygiene items, hair, toilet paper that have fallen into the sewer are easily crushed.
• With grinder for hot water. The device works at temperatures up to 90 degrees and is an ideal choice for installation in baths and saunas equipped with a toilet.

Also, the equipment is distinguished by the type of installation:

• on the surface (a suction hose is lowered into the pit);
• full immersion (the unit is fixed at the bottom of the pit using guides);
• partial immersion (installation according to the float principle) - the engine remains on the surface, and the pump compartment is immersed in the liquid.

Model overview

Pedrollo

Well-known Italian manufacturer of pumping equipment, offering a line of submersible fecal pumps. All models are of high build quality and affordable price. The body of the units is made of stainless steel or cast iron. The maximum head with vertical pumping is up to 15 meters.

Productivity is 70 cubic meters of liquid an hour. Industrial models are also produced with a capacity of up to 94 cubic meters and a head of 24 meters.

Advantages:

• high build quality;
• wide model range;
• affordable prices.

Flaws:

• large unit weight.

The market price is from 3,000 to 150,000 rubles, depending on the model. Industrial designs are more expensive - up to 250,000 rubles.

Truly versatile pumps. We pump out any problematic liquids with such a unit - fecal sewage, melt water from the basement. We clean with it a home pond.

I am glad that there is a large selection of pumps of this brand on the market. Yes, the pump is heavy compared to plastic counterparts - its weight is 14 kilograms, but it is distinguished by the reliability of all components and the housing. Everywhere steel and iron! No plastic. You won't accidentally knock anything off if you drop it.

UKRNASOSPROM

Fecal pumps of the SM brand from the Ukrainian brand are typical surface-type units. Made from cast iron and stainless steel. They can be used for both domestic and industrial purposes. The average height of liquid rise is 50-80 meters. Productivity up to 50 cubic meters per hour.

Advantages:

• sufficiently high power and performance;
• universality;
• low cost;
• design reliability.

Flaws:

• significant weight (up to 18 or more kilograms).

The average market price is from 12,000 rubles.

Inexpensive pumps, easy to use. During maintenance, the unit does not need to be washed from the outside from dirt - it is inside. I consider this the main advantage of surface models.

Our model is SM 80-50-200/2. Works with impurities up to 5 mm and at a temperature of 90 degrees. They put it in an insulated caisson near the house. We use for pumping water from the bathroom and toilet. Not a single failure in two years.

Calpeda

The Italian brand, which has been present on the world market for half a century and has earned the trust of customers, offers semi-submersible models of fecal-type pumps. This line occupies the middle and high price segment. Productivity from 3 to 30 cubic meters per hour. Head from 4 to 11 meters with vertical supply.

Can be installed up to 2.5 meters deep.

Advantages:

• wide range of;
• economical power consumption;
• reliability and ease of operation.

Flaws:

• high cost of more productive models;
• inability to work with great depth;
• can not be used for pumping contaminated fluid with large impurities.

The price is from 47,000 to 115,000 rubles.

High quality pays big money. Calpeda offers exceptionally high quality pumps. Very happy with the build. We use the SC 30/1250 model. Its body is made of cast iron, and the impeller is made of brass.

For an amateur pumps. It is very unusual that the impeller is an open type. I think the price is too high, given the technical characteristics. The pump is "too tough" with water interspersed with mechanical impurities up to 3 millimeters in size. The operating temperature is only 40 degrees. It will not be possible to pump water from the sauna with such a device. And it’s also not worth using it to pump out the general sewerage - what if it gets clogged?

Proper operation

Regular use of the pump for pumping fecal effluents implies compliance with all the technical conditions specified in the instructions!

Owners need to pay attention to the following parameters:

• immersion depth for submersible and float (semi-submersible) models;
• on the pumping feature and the generated power (for models with vertical liquid supply, the average is 7-10 meters, for horizontal models - up to 100 meters);
• energy consumption - quite economical household-type pumps with a capacity of 220-370 watts are produced;
• on the size of mechanical impurities - it can be from a few millimeters to 8 centimeters;
• temperature of the working environment - from 40 to 90 degrees;
• the presence of a grinding mechanism (it is impossible to install models without a knife in drains with large mechanical impurities);