What is a drain pump for dirty water?

Electric pumps for dirty water are a portable type of centrifugal devices designed for pumping both clean and polluted water. There are many models of such devices that differ in their individual characteristics. For example, the degree of water contamination, the diameter of solid inclusions, the presence of fibrous impurities, the density of the mud solution, and the like. Individual devices are capable of providing a throughput of solid particles up to 38 mm.

Scope of the unit

The drainage pump for dirty water is used to install directly into contaminated reservoirs, it helps to remove liquids at construction sites, draining trenches, trenches, draining waste water in the home, industry, pumping water for irrigation, helps to lower the levels of groundwater occurrence. Each unit is equipped with a float, which controls the water level, as a result of which the device automatically turns on and off.

According to the engineering drawings, a typical drainage pump for dirty water consists of a centrifugal pump, which is driven by a three-phase hermetically sealed motor with a squirrel-cage rotor. It is necessary to seal the inner parts of the motor from the side of the protruding end of the shaft. Thus, the effect of the pumped liquid on the assembly made up of the mechanical seal, the sealed separation chamber and the reinforced cuff of the rubber material is eliminated. The liquid is fed into the unit through a protective grid filter.

The drainage pump for dirty water is not designed for pumping liquids under conditions that are classified as explosive and fire hazardous. However, it is worth mentioning some models of explosion-proof devices. Asking about where to buy a drain pump without leaving your home, try to visit specialized sites offering such products.

Working conditions

Depending on the requirements of the customer for such types of electric pumps to perform unhindered pumping of working fluid in various degrees of pollution, in addition, under different conditions, they differ dramatically in the type of execution. For example, some models work with contaminated water with the following physical characteristics: temperature from + 25 ° C to + 60 ° C, mud density - up to 2500 kg / m3, permissible mechanical impurities, namely sandstone, With a probable concentration of not more than 10% with respect to the whole mass and the optimal size of inclusions up to 5 mm.

Drainage pump for dirty water of a certain type of performance is able to work with some inclusions of crude oil in a concentration of up to 10% of the mass. It should be borne in mind that crude oil in its composition should not exceed 7% of paraffin, 3% of sulfur in a non-free state. However, if necessary and in emergency situations, it is permissible to use a pump for pumping mud flows, with impurities up to 100% of crude oil, although not more than five hours for the entire life of the product before the next major overhaul.

The drainage pump for dirty water should be in a vertical position, this is how it is in its normal working condition. To quickly cool the unit, it is immersed in the water environment entirely, the whole body. In order to exclude the process of stretching and, consequently, damage to the electricity supply of the pump cable under high voltage, immersion of any pump model in the liquid working medium must be carried out by means of a durable tested cable.

The pump models of such companies as Lowara (models Vortex, DL), Dreno (Alfa), Nocchi (Omnia, Priox), Grundfos (DW, EF), Speroni (SXG 1000, TF), Wilo (Wilo-EMU KS, Wilo-Drain TP 65), Pedrollo (VX, VXC, VX-I, VX-F VORTEX). The optimal price-quality ratio is domestic GNOM pumps with models 6, 7, 10, 25-20, 40-25, 53-10