Flameproof Type Sand Pump

It can meet the drainage needs of underground mining faces and hazardous areas with methane or coal dust explosions in the air, and adapt to the ultimate development direction of mine drainage diving and automation. The vulnerable parts of the submersible sand removal electric pump are made of ductile iron material, and the mechanical seal is made of high hardness hard alloy, so the service life of the entire machine is greatly extended.

(1) Drainage during construction of coal mine shafts and inclined shafts.

(2) The main drainage system at the bottom of the mine without water storage.

(3) Drainage of mining face.

(4) Vertical well bottom bulk bin main drainage.

(5) Water inflow and drainage in old ponds and uninhabited areas.

(6) Clear water warehouse drainage, removing stagnant coal mud and sediment for drainage.

(7) Disaster relief and emergency drainage.

(1) The maximum diving depth should not exceed 5m, and the minimum depth should ensure that the suction net is submerged in the water.

(2) The water temperature shall not exceed 40 ℃.

(3) The pH value of water is within the range of 4-10.

(4) The volume concentration of water containing solid impurities generally does not exceed 2%.

(5) The diameter of solid particles in water shall not exceed 50% of the minimum size of the pump channel flow section.

(6) Working environment 0-40 ℃.

(7) The working mode is continuous working.

1) The structure of the electric pump is a single unit single suction centrifugal lower pump, which adopts a dry high-efficiency motor, a double-layer shell, and an internally installed structure;

2) The structure of the water pump adopts a single-stage centrifugal impeller and a centrally symmetrical multi expansion chamber pump body. This structure can balance the radial force of the pump shaft, reduce hydraulic impact, and extend the service life of the bearings. The electric pump is equipped with a sand discharge hole at the bottom of the water pump, which can balance some axial forces and discharge sediment to avoid clogging the impeller during pump shutdown and flushing;

3) The cooling method of an electric pump is as follows: the heat generated by the motor is transmitted through the iron core and the cooling airflow inside the motor shell, leading to the motor shell. Then, it is forced to cool by the water flow or airflow flowing between the motor shell and the guide shell (during no-load operation). This method can ensure that the electric pump does not burn the motor during long-term idle and short-term overload operation;

4) The electric pump adopts a combination of skeleton oil seal, hard alloy dual channel mechanical seal, and oil chamber for sealing

The sealing form has been proven by practice to have high reliability and service life;

5) The electric pump has a simple structure and is easy to maintain.

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