Mining flame-proof type submersible sand discharging pump

Abstract

The invention provides a flame-proof type diving and sand discharging pump for a mineral and belongs to the field of sand discharging pump. The structure of the sand discharging pump comprises a water outlet, a check valve seat, an upper bearing seat, a cable pressure sleeve, an outlet box, a motor shell, a rotor, a lower bearing seat, a water inlet node, a guide vane body, an impeller I, a guide vane middle disc, an impeller II and a base; the upper part and the lower part of the motor shell are provided with the upper bearing seat and the lower bearing seat for fixing the motor rotor respectively; the water outlet is arranged on the upper end part of the motor shell through the check valve seat; the outlet box is arranged on the upper end part of the motor shell; the upper end part of the base is fixedly connected with the water inlet node; the inside of the water inlet node is provided with the guide vane body, the impeller I, the guide vane middle disc and the impeller II; impeller alloy rings are arranged near two ends of the impeller I; a sealing device is arranged on the impeller alloy ring to ensure that no water enters. Compared with the prior art, the flame-proof type diving and sand discharging pump for the mineral is safe and reliable, saves operating space and operating cost, improves service life and reduces civil engineering expense of a pump station.

Description

(1) Technical field [0001] The invention relates to a submersible sand discharge pump, in particular to a mine flameproof submersible sand discharge pump. (2) Background technology [0002] Mining explosion-proof submersible sand pump is suitable for industrial sectors such as coal mines, metallurgy, electric power, building materials, etc., where there are gas and flammable and explosive places, to transport mixed sewage containing suspended solid particles such as sediment, cinder, fibers, etc. corrosive liquid. The pump should have the functions of explosion-proof, wear-resistant and anti-corrosion. At present, overheating, liquid leakage, overload, wear and other protections of submersible pumps at home and abroad are all controlled remotely through lead wires, but they do not conform to the reality of mine mobile operations, and are inconvenient to use, making mine use unacceptable. For mine pumps equipped with filter screens at the pump inlet, mine pumps that transpo...

AI Technical Summary

Problems solved by technology

At present, the overheating, liquid leakage, overload, wear and other protections of submersible pumps at home and abroad are all controlled remotely through lead wires, but they do not conform to the reality of mine mobile operations, and are inconvenient to use, which is unacceptable for mine use.

For mine pumps equipped with filter screens at the pump inlet, mine pumps that transport small particles and not very high concentrations generally use vane impellers, semi-open or closed structure impellers, and closed structure impellers The efficiency is slightly higher; there are also some small mining submersible pumps with a channel-type impeller structure, which has a strong passing capacity, but the impeller is heavy, and the efficiency is slightly lower than that of the closed structure impeller.

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