The narrowest fecal pump. Varieties and best models of fecal pumps with a chopper

If you have a private house and an individual sewerage system, you can either call special services periodically to maintain a septic tank or AC, or service the devices yourself. The prices for the service are such that, despite the very unpleasant procedure, people do it themselves. For such work, you need a fecal sewer pump. This is a special device that can pump very dirty water.

Drainage and fecal - what's the difference

There are two types of pumps for pumping contaminated water: drainage and fecal. How are they different? Drainage are designed to drain polluted waters containing small solid inclusions - silt, sand and other substances of approximately the same size. To prevent larger particles from getting inside, meshes are installed. As you understand from the description, drainage pumps are suitable for pumping clarified water from a storage well located after a septic tank, for pumping water from a storage well for drainage and storm sewers.

If you need to pump out sludge from an automatic individual cleaning plant (such as or others), or sediment from the bottom of a septic tank, a drainer will not cope with this. Too dense environment. For a septic tank, there is, in principle, a way out, stir up the sediment, pump out the suspension, pour water again, shake it up again and pump it out again. It is possible to do this, but the septic tank will then enter the operating mode for a very long time, so this method can be used only in extreme cases. It is better to purchase special equipment that will cope with the compressed sediment.

Sewer pumps are used to clean cesspools and septic tanks. They can handle heavily contaminated liquids, viscous media that may contain solid particles. The particle size depends on the model, but the maximum value is 50 mm. Not always in the cesspool, all waste rots to such a state. To be able to cope with the situation, a chopper is installed at the bottom of the pump. It is usually placed on centrifugal models - additional cutting blades are installed on the shaft. Effluent already crushed enters the working body of the pump.

So if you plan to use a fecal pump to pump out a cesspool, it is desirable that a grinder be present in the model. It grinds larger particles to acceptable sizes.

Types of fecal pumps

Sewage pumps operate in an aggressive, chemically active environment. In addition to the fact that their body must be sealed, the materials from which it is made must be chemically neutral and resistant to aggressive environments. There are very few such materials:

• stainless steel;
• some types of plastic;
• cast iron.

The best material is stainless steel, but the same material is the most expensive. The most budget option is a plastic case. These models are the cheapest. In the middle price category, fecal pumps for pumping sewage with a cast iron body. Despite the fact that you have to use this device infrequently, you should not choose cheap models. Is that for a summer residence, where you come only from time to time.

By type of installation, pumps for pumping feces are:

• Submersible. They are installed at the bottom of the tank, usually operate in automatic mode. Switching on/off is done with a float switch. The float rises/falls with the liquid level, when it is at the bottom, the pump is off.
• Semi-submersible. These pumps are elongated, their suction part is quite far from the motor. The motor remains on the surface, it floats on a special platform, the suction part is in the thickness.
• Surface. Only the hose connected to the inlet is lowered into the tank, the device itself is located next to the tank. A surface sewerage fecal pump usually has a plastic housing and a small capacity. This is basically a country option.

Now we need to figure out all this diversity - when and what devices are better to use.

Features of operation and installation

When choosing a fecal pump for sewage, it is necessary first of all to be based on the operating conditions of the equipment. If you are looking for equipment for seasonal living, there is no need to spend money on expensive and powerful submersible models. For these purposes, small and mobile surface installations will be optimal. They are good because you can take them with you for the winter - they weigh 5-12 kg, depending on the power. If equipment is selected for a private house of permanent residence, it makes sense to purchase more expensive equipment that can be mounted permanently.

Submersible sewage pump

This equipment can be installed permanently or mobile. With a stationary installation, a platform is made at the bottom to which the body is attached. Pipes (usually plastic) are connected to the outlet pipe. The option is not bad, but if there is a need for repair or maintenance, it is not clear how to get the installation.

How to install a submersible fecal sewer pump yourself

The pipe coming from the pump can be brought up to the surface of the earth, or it can be led into the wall and laid, say, a pipeline underground to the storage tank. This is an option for those who cannot reach a septic tank / cesspool. In this case, it is necessary to call a special machine with a long hose. But a couple of such calls are equal to the cost of a mid-range mud pump. Therefore, often in such cases, a storage tank is built / installed in accessible places, the remains are pumped into it with the help of a fecal pump, and then a regular car is called.

The second, mobile option, is better in this regard. Two rods are mounted along one of the walls of the tank. Diameter - slightly smaller than the diameter of the holes in the body. A chain is attached to the upper part of the submersible sewage pump, and a corrugated pipe is connected to the outlet pipe. Next, the body is put on the installed rods, and, like on rails, the device is lowered to the bottom. With this method of installation, if necessary, the pump is pulled out by the chain. There is only one minus - the need to use corrugated pipes. Their structure leads to the fact that the pipes are often clogged, respectively, they must be changed, since it is very unpleasant to clean them.

Installation options for submersible sewage pumps (drainage and storage wells)

The use of a corrugated hose can be avoided in models with a lower suction nozzle. In this case, a rigid (plastic) pipe is mounted, leading it out so that the pump descending along the guides sits on it (in the photo on the right).

And the easiest installation option: just lower the device to the bottom on the chain. When the effluents are pumped to the desired level, the equipment is turned off and removed from the tank, washed, dried and carried away to the utility room until the next use.

Despite the rather complicated installation, it is submersible fecal pumps that are most popular. This is due to the fact that they are usually more powerful, and they can also pump media with particles up to 50 mm in size. And it is the submersible models that can be with a grinder.

Advantages of submersible pumps:

• They can lift fluid from great depths.
• It can work in automatic mode, with the help of a float controlling the liquid level.
• No need to worry about cooling.
• Low noise level.

It is submersible fecal pumps that can develop sufficient power to pump out the contents from great depths. In the case of sewers, this may not be so important - septic tanks are not so deep. But if necessary, it is possible to pump wastewater over a long distance over the surface. The main thing is that the hoses are enough.

Semi-submersible fecal pumps

This type of equipment combines the advantages of surface and submersible pumps. Since the engine is above the surface of the water, it is not necessary to make it ideal for waterproofing. There is also no need to tightly arrange all the parts in the case. All this has a positive effect on the price - it is much lower than for submersible models.

The disadvantage of semi-submersible fecal pumps is the smaller particle size that it can suck up, the smaller depths at which it can work. The disadvantage is also that a chopper cannot be installed on this type of pump. However, not all cons are significant for domestic use. Too large depths for private use are not needed, and a simpler design makes repairs more affordable, so there are clearly more advantages.

One of the types of semi-submersible devices is vertical

A feature of the installation of semi-submersible pumps is that it is necessary to install it so that the motor is above the water. The installation method depends on the model, it is prescribed in the instructions for the product. In general, there are several installation methods:

• A platform is made on the wall of the tank, equipment is fixed on it. With this method of installation, it is necessary to ensure that the liquid level does not rise above the platform - the upper part of the body is not airtight. You can control the level with the help of automation - sensors that give a signal to turn on and off.
• Floating pad installation. This method of installation is found in small semi-submersible fecal or drainage pumps for domestic purposes.
• Very small models, which are also called "barrel" can be hung on board.

Despite all the advantages, this model is not used so often. Basically, a fecal sewage pump is acquired as a submersible or surface type.

surface models

The simplest installation is for surface-type fecal sewage pumps. The device itself is placed on the ground, and only hoses are lowered into the container.

The most serious drawback of such models is the phenomenon of cavitation, which occurs when pumping liquids from great depths. Cavitation is the saturation of the pumped medium with air bubbles. If such a mass enters the working body of the pump, it will fail. That is why it is not recommended to use surface fecal pumps at depths greater than those for which they are intended. In the case of pumping out a septic tank or storage well, the use of such models is justified. They have a shallow depth, and not even the most powerful motor will cope with the task. It is only necessary to choose the right power unit.

Please note that all models of surface pumps are designed for pumping water. Only some of them can pump viscous liquids, and this should be indicated in the description or passport. The disadvantage of this equipment is that it requires a homogeneous environment - the maximum particle size that they are able to pump is 0.8 m. The price is undoubtedly attractive, but among the submersible models there are very inexpensive ones - for example - Gileks and Ebara (Ebara). The latter also have a stainless steel body and a wide range of models with different pressure and performance.

How to calculate the required lift height

When choosing a fecal pump for sewage, you need to pay attention to two characteristics: its power (performance) and lift height. With performance, everything is more or less clear - it depends on the volumes that need to be pumped. The height of the lift will have to be considered, because in addition to the vertical component, with which everything is clear (this is the depth of the well / septic tank from which the drains must be raised), there is also a horizontal component - these drains must be transferred somewhere, usually into some kind of container. The distance to which the drains must be transferred in the horizontal plane is divided by 10. The result is added to the height of the rise from the well.

For example, the depth of the well is 4 meters, it is necessary to transfer drains to 35 meters. In total we get: 4 m + 35 m / 10 = 7.5 m. In the technical characteristics of the pump, the lifting height should be at least this figure, and preferably 20-25% more so that the equipment does not work at its limit, which leads to premature wear . Now you know how to calculate a fecal sewer pump.

A fecal submersible pump with a grinder can come to the rescue. You can also purchase a semi-submersible or surface model, depending on specific conditions. Despite the differences in technical characteristics and different ways of installing these products, they all have a common fundamental difference from machines for other purposes - the ability to process large, but soft, long-fiber inclusions.

It seems that the name determines for what purposes a fecal pump with a chopper is used - for, septic tanks, etc. In fact, the scope of such units is much wider. Special fixtures capable of grinding not only feces, but also other organic impurities- fallen leaves, algae, food waste, etc. This ensures the passage of contaminated effluents through the pump, reduces the load on the motor and the likelihood of it jamming. This makes domestic faecal pumps with a chopper suitable for transporting stormwater, rainwater with leaves, drains from the kitchen sink and dishwasher.

• Models with shredders are suitable for sewer systems where, due to the large number of users, it is impossible to control the absence of foreign objects in drains - in campsites, at enterprises.
• Their use is effective in catering establishments, where vegetable peels and food leftovers when washing dishes get into the drain.
• With the help of units of this type, it is possible to pump water from natural reservoirs and flooded pits for drainage, as well as supply water from a lake or pond, which contains silt (organic fertilizer) for irrigation.

Fecal pumps are also necessary in cases where the sewer system is made of pipes with a small cross section (up to 50 mm).

Principle of operation

Grinding of soft (in most cases - organic) inclusions in aggregates of this type can be carried out in various ways.

• Impeller of a special shape - screw conical with blades sharpened on the outside.
• The scissor effect created by the close proximity of the blades with sharp edges to the lower inner surface of the cylinder.
• Separately, but coaxially with the impeller, knives are installed in front of the chamber entrance.
• Knife block mounted separately and operated by means of a reduction gear.

Otherwise, the principle of operation and the design of fecal pumps practically do not differ from similar parameters of drainage models. Pumping units with shredders also consist of a housing, an electric motor (for household models - designed for 220 volts, and for industrial ones - 380 volts).

Another distinctive feature of fecal models is the use of durable and chemical-resistant materials for the manufacture of the body and the main components of the units. This makes it possible to use a faecal pump with a cutting mechanism without any risk of abrasive damage when sand or other small solid impurities enter the drains, as well as in the presence of aggressive substances in the water (for example, cleaners, detergents, disinfectants).

Materials for the manufacture of the case can serve:

• stainless steel,
• cast iron,
• plastic (budget models that are not designed for very intensive use).

The shaft with knives and the impeller can be made of stainless steel or steel with a protective coating (against corrosion and abrasive effects of impurities).

Types of models

All pumping units can be divided into three types according to the place and method of installation.

• Submersible a fecal pump with a grinder for pumping out cesspools or other reservoirs operates in the water column. Its advantage is a large lifting capacity, grinding of inclusions with a diameter of up to 50 mm. The disadvantage of this option is the complexity of inspection, maintenance and repair of equipment.

  

• Surface units are located on land, sewage enters the chamber through a special pipe or hose with a large diameter.
  Similar surface fecal pumps are used when the size of the inclusions is not more than 5 mm, since they do not have a chopper

  If the sewer riser, septic tank or cesspool is above the level of the drain point (for example, when the toilet or washing room is located in the basement), a special surface unit is installed next to the drain point (toilet, kitchen sink, etc.).

  

• Semi-submersible pumps are installed in most cases in receiving wells with waterproofing and do not have grinders. The particle diameter should not exceed 15 mm.

  In a semi-submersible fecal pump, the suction part is immersed in the liquid, and the engine is on the surface, which ensures its air cooling

Equipment can be classified according to the scope of application:

• Industrial fecal pumps with a chopper, which include units for large facilities (enterprises, repair shops, office buildings and institutions), as well as models that transport liquid from the sewer of a residential building to the central pipeline of the system, and are used to empty septic tanks or cesspools (although low-capacity units of this type can be attributed to household).
• Category household appliances include pumps for toilets and kitchens installed in apartments and private houses.

An important parameter for evaluating and comparing models when choosing is the ability of pumping units to withstand high liquid temperatures.

• A faeces pump with grinder, used only in a toilet, is usually selected for low temperature liquids.
• Models for the kitchen or common collector, where the drains of the washing machine and dishwasher are connected, can withstand temperatures up to 80-90 ° C.

Pump installation

The method of installing the pump depends on its type, and that, to a certain extent, on the mode of operation.

For permanent work

For continuous pumping of sewage, it is advisable to choose a submersible or semi-submersible model of a fecal pump. Speaking of semi-submersible pumps, they installed permanently and dismantled only for the period of repair. The best place for mounting units of this type is a specially built receiving well. Its overall dimensions must be at least 500x500x500 mm. The receiving well is a kind of reservoir into which all the pipes of the system are inserted (for example, a branch from a house, bathhouse, outdoor shower, etc.).

An important nuance in the installation of units of this type is the need to fine-tune the automation. The pump shutdown threshold should ensure that the well is constantly in a nearly empty state, while not allowing air to be entrained.

For intermittent pumping

Periodically submersible fecal pump with grinder for giving used when emptying the contents of septic tanks or cesspools. Installing a stationary semi-submersible or surface unit in this case is impractical. When using portable submersible models, it is important to ensure that the unit is installed smoothly and accurately into place, for which a cable and special guides are often used. Moving along them, the pump occupies the correct position, and after emptying the tank, it is removed in the same way.

To extend the life of the equipment, submersible fecal pumps with a chopper for giving before storage during a break in operation, be sure to clean and dry, after which they are sent to a dry heated room (utility room, pantry, garage, etc.).

Units for toilet bowls in houses and apartments

Household models for toilet bowls are designed for a wide range of consumers, so their design is as unified as possible and does not require complex work during installation, there is no need to configure the equipment.

All structural elements are placed in one housing made of durable plastic, so the user does not need to perform assembly. On the same body there are connecting flanges with sealing tabs (it is used for direct connection of the pump to the toilet bowl). The connection in the sewer pipelines is carried out using special nozzles. Their number can be different, the presence of more than one branch pipe makes it possible to connect additional drain points to the pump.

The pumping unit is turned on automatically - the engine turns on immediately when liquid enters the system and turns off when the tank is empty.

In more detail about the toilet and its use, we told in a separate article.

Popular sewer units are from the Danish manufacturer of the same name. An overview of various models is available on our website.

And you can get advice on choosing a hydraulic accumulator.

Popular models and brands

Grundfos (SEG series)

Submersible fecal pumps with Grundfos chopper are made of cast iron, durable and resistant to chemical and temperature effects, and the design allows the models to be installed permanently or transported to other objects. This expands the scope of the machines and allows them to be used for autonomous sewer systems, storm drains, draining tanks, supplying water for irrigation from natural reservoirs.

The advantages of the brand's products are:

• increased strength of the one-piece body,
• excellent performance,
• two protective relays, eliminating the possibility of engine overheating.

The brand's assortment includes not only submersible, but also surface fecal pumps with a chopper (Sololift series) for toilet drains.

Gileks (fekalnik series)

The models of this manufacturer are economical, but their low cost is combined with impressive technical capabilities, which makes Jilex pumps popular among household models. Head - from 6 to 11 m, the maximum size of individual elements of impurities - 35 mm, productivity - 150-220 l / min.

Important: Dzhileks fecal pumps do not have a grinder, consider this when choosing.

Sprut (model V1300D)

A model of this brand is suitable for those who are looking for a household fecal pump with a chopper, the price of which will be justified by high performance. The unit pumps wastewater with temperatures up to +40° C with mechanical impurities up to 5 kg/m3, the maximum size of inclusions is no more than 35 mm.

Herz (WRS series)

Herz fecal pumps compare favorably with analogues by the presence of protection against possible negative factors (liquid entering the motor, mechanical damage, overheating, etc.). At the same time, the cost of models when compared with domestic counterparts with similar characteristics is only slightly higher.

What to look for when buying

• Pump power directly affects its capabilities - productivity, pressure, the ability to pump water with a large amount of impurities. But the greater the power, the greater the power consumption of the unit.
• Housing and main components(knives, impeller, shaft) must be made of durable materials (wear-resistant plastic, cast iron, steel).
• Presence of protective devices ensures trouble-free and safe operation of pumps. Overheating protection can be neglected when operating submersible models - they are cooled naturally by the liquid surrounding them. Units must also be equipped with float switches that control the liquid level, check valves that prevent water from flowing in the opposite direction.
• Not always the most expensive model has the best performance.

Despite the rather serious cost, submersible fecal pumps are in stable demand due to the specificity of their tasks. It is because of the significant price that the choice of equipment of this class should be approached with all responsibility.

Equipment for this purpose operates in aggressive environments with constant immersion in them. It is in connection with this that the body of the fecal submersible pump must not only be sealed, it must withstand the effects of any destructive factors. The most durable are pumps made of stainless steel, cast iron or certain types of polymeric materials.

The centrifugal submersible sewage pump is considered the most productive and reliable, but units with vortex or screw, and even vibration feed can be found on sale.

To ensure the ability to work even with heavily polluted drains, many models have a special cutting mechanism that brings fecal waste to a state of homogeneous mass. Thanks to the grinder, it was possible to significantly increase the productivity and working life of the pump, in addition, it became possible to pump wastewater through pipelines of small diameter.

In addition to the filter mesh and check valve, most equipment models are equipped with automatic control systems that allow the submersible sewage pump to be turned on when a certain level of wastewater is reached.

Basically, the units are placed in sewage treatment plants or other containers and tanks in a suspended state, but there are also models mounted on platforms to prevent sludge from being sucked in.

The main advantages of submersible sewage pumps

Experts unanimously note the following advantages of sewage submersible pumps compared to conventional household equipment:

• Possibility of pumping liquids with fraction impurities up to 80 mm. In addition, they can completely replace conventional household pumps with equal pressure and flow characteristics.
• Significant working resource provided by the use of materials resistant to corrosion and aggressive substances in the production.
• Submerged operation provides better cooling of the electrical part of the installation, which ensures its durability.
• Sewage pumps are self-priming, pre-filling before start-up is not required.
• Ability to work both in automatic mode and with manual control.
• They provide lifting of fecal masses to a height of up to 30 meters or more, they are distinguished by high productivity.
• The use of sewer pumps with a grinder allows you to save on the laying of pressure pipelines, a line with a diameter of up to 50 mm is quite enough.

Choosing a sewer pump - what to look for

First of all, analyze the operating conditions and select the model with the most optimal pressure and flow characteristics.

In addition, pay attention to the following points:

1. The large diameter of the outlet nozzles will ensure the pumping of even heavily contaminated liquids and fecal matter. For domestic use, 40-50 mm is quite enough; for solving serious production problems, it is better to purchase models with an output of 70-80 mm.
2. Despite the fact that most of the cooling is carried out due to the surrounding drains, models with oil overheat protection systems should be preferred, such a submersible sewage pump will last much longer.
3. In some cases, preference should be given to modifications that have several outlet pipes, this will allow pumping through several communication lines at the same time.

To solve most household tasks, a pump with a capacity of about 5 cubic meters per hour is enough. The unit must provide a head of 6-6 meters vertically (horizontal about 100 meters). Industrial equipment should have more significant characteristics.

The most popular models of submersible sewage (fecal) pumps

Most often, consumers prefer the products of several domestic and foreign manufacturers, a huge role in the choice is played by the more affordable cost of Russian units.

Budget models of sewage submersible pumps

In this list, it is worth highlighting the following domestic and Eastern European units:

Grundfos sewage pumps - traditional quality and reliability

The only drawback of the equipment of this manufacturer is the high cost, there are no other claims to the units of this brand.

Italian sewer - reasonable value for money

Most often on the market you can find the following model series of this manufacturer:

PedrolloVX - sewage pump characterized by reliability and durability. Made of stainless steel and cast iron, capable of developing a capacity of up to 70 cubic meters, a maximum head of 15 meters. Provides pumping of liquids with impurities up to 70 mm in size, equipped with various control systems.

Depending on the modification, it can cost from 3 to 150 thousand rubles.

Sewer pump Pedrollo MS differs in unique productivity (94 cubic meters) and pressure (up to 24 meters). Equipped with single and three-phase motors, it can be used for industrial purposes.

The average cost is about 240 thousand rubles.

WILO-DRAIN MTC / MTS

Interesting and WILO-DRAIN MTC / MTS, sewage pump with original cutting system. In terms of cost, it belongs to the middle price segment (about 40 thousand rubles). The capacity is about 13 cubic meters, the head is up to 21 meters, it is able to grind impurities up to 40 mm. Differs in high reliability, can be operated at depths up to 10 meters.

As you can see, the choice of pumping equipment is quite wide, so when buying, you should consult a specialist. This will help ensure the operation of the equipment in normal mode, prevent breakdowns.

Remember, repairing a sewer pump is quite complicated and time consuming!

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.