Distinctive features of the
drainage pump Having studied the range of devices on the market, their technical characteristics and operating limitations, it is possible to determine the most suitable unit for a particular case. This acquisition is very useful in view of its low cost, ease of installation and operation, as well as small size and weight, which makes its storage and transportation as convenient as possible.
The main purpose of drainage pumping units is to pump water contaminated with mechanical impurities from reservoirs of different purposes( pits, mines, cesspools, sewerage pipelines, treatment facilities and industrial systems).In everyday life, they are used in suburban areas for pumping water from wells and cleaning them, as well as eliminating the consequences of accidents.
The scope of application of fecal and drainage pumping plants is one, but the difference in principle is the dispersion and composition of the pumped medium. Fecal pumps, because of their design features, can grind large contaminants and thus transport liquids of predominantly organic composition with a small amount of solid impurities.
The drain pump allows pumping waste water, the size of inclusions in which is from 3 to 12 mm for different models. Units of maximum capacity are able to transport large volumes of sewage with particles, the size of which reaches 40 mm.
Types of drainage pumps. Surface
Such mechanisms are mounted on the surface where they will work, and the suction pipe is lowered into the pumped medium. To ensure the automatic operation of the equipment, a float mechanism is attached to the hose, which controls the changes in the level of the liquid in the tank and turns the pump on or off when the drain reaches certain marks.
The construction of such a hydraulic machine assumes the presence of a pipe through which the suction of waste water is carried out, as well as a discharge pipeline. Correctly organized operation of the unit provides for transportation of drains, which does not allow liquid to enter the motor and disable it.
Before installing the drainage pump on the work surface, it is necessary to study the structural dimensions, especially the diameter of the discharge nozzle, since its accurate coupling to the sewer pipes is the key to the efficient operation of the unit.
The main advantage of surface hydraulic machines is their ability to easily transport and store, ease of repair, as well as convenience of supplying electricity to the engine.
Submersible
Unlike pumping systems of surface type, submersible ones are placed in the pumping medium entirely. They have only one discharge nozzle, and the suction takes place directly by the surface of the bottom of the unit, which is equipped with a screen filter. The pump motor is perfectly insulated to prevent short circuits. Automatic operation of the pumping unit is ensured by the float mechanism, as in the previous case.
Scheme of operation of drainage pumps
The principle of operation of drainage pumps is simple - emptying the reservoir or pit, they pump sewage into the external sewage system or the selected capacity. It is recommended to provide a small depth of equipment installation, as it becomes easier to carry out repairs.
An important factor in the operation of the device is the temperature of the liquid that it pumps. Cooling of the engine occurs by heat transfer to the transported substance, therefore for most brands of pumping units, the temperature limitation is 50 degrees, but there are certain models that can overcome this boundary.
Principle of selection of drainage pump
In order to select the right drain pump, it is necessary to pay attention to the following characteristics:
- Restrictions on operation. The main condition for the efficient operation of pumps is the permissible size of the contaminants that are specific to the particular model. It should also be taken into account that the concentration of fibrous particles contained in the effluents should be minimal. If the size and specific density of pollutants is high, it is worthwhile to use grinding fecal pumps.
- Specifications. Calculating the necessary power, it is necessary to understand that one meter in the vertical direction is equivalent to 10 meters horizontally. That is, with a well depth of 3 meters, the recommended length of the pipeline will be more than 30m. For the productive operation of the unit, it is necessary to add the length of the pipeline laid along the surface to the required height of the sewage.
When choosing a drainage pump set, the main technical parameter that requires attention is its capacity. Thanks to it, it is easy to determine the efficiency of the pumping unit.
- Select pump type and model. It depends on the desired purpose of the device and the place and method of its installation. It is best to install the unit in the floor recess. Such a constructive solution will prevent the flooding of the basement floor or the basement.
The drain pump is used for pumping water from reservoirs, pits, wells and cellars. Such hydraulic machines have a number of advantages: long service life, versatility, mobility, safety of use, ease of installation and repair, relatively low price.
