Movable pump station of emulsified liquid for mine, with function of preventing water overflow

Abstract

The invention discloses a movable pump station of emulsified liquid for mine, with a function of preventing water overflow. An emulsification oil tank, a pressure-reduction water tank, a water pump, an oil tank, a one-way valve and a combined valve body are arranged on a base plate, wherein a ball float valve with the function of automatic water feeding is arranged in the pressure-reduction water tank. The movable pump station is characterized by further comprising a water blocking valve connected to the water inlet of the ball float valve; a three-way valve is connected to a high-pressure pipeline of the pump station; the structure of the water blocking valve lies in that a pressure spring and a piston rod are arranged in a valve cavity; the top of the upper cavity of the water blocking valve is connected with a tap water pipe, the lateral side of the upper cavity is communicated with the ball float valve, and the bottom of the lower cavity is connected with the three-way valve. When the pump station reaches a rated working pressure to stop working, the hydraulic pressure in the high-pressure pipeline enters into the lower cavity of the water blocking valve through the three-way valve, the piston rod is pushed to overcomes the resistance of the pressure spring to move upwards, and the tap water outlet of the upper cavity is blocked, so that the tap water entering the ball float valve is cut off, and the water is prevented from overflowing the pressure-reduction water tank.

Description

technical field [0001] The invention relates to an emulsion pumping station used for underground supporting systems of coal mines. Background technique [0002] In the coal mine hydraulic support system, the emulsion pump station is required to generate hydraulic power. Currently used emulsion pumping stations are pneumatic and electric. Regardless of the pneumatic type or the electric type, there are at least an emulsified oil tank, a decompression water tank, a water pump, an oil pump, a power machine and a combined valve body on the chassis; the pneumatic power machine is an air pump, and the electric power machine is an electric pump. Also be provided with the float valve of automatic water inlet in the decompression water tank. During work, when the pump station reaches the rated working pressure, it will automatically shut down. When the automatic shutdown no longer requires water supply, the decompression water tank is prone to overflow, which affects the downhole e...

AI Technical Summary

Problems solved by technology

During work, when the pump station reaches the rated working pressure, it will automatically shut down. When the automatic shutdown no longer requires water supply, the decompression water tank is prone to overflow, which affects the downhole environment and wastes water. meters deep, the tap water pressure from the ground is far greater than the pressure of the float valve of the decompression tank (but less than the working pressure of the pump station), and the float valve cannot be automatically closed when the pump station shuts down and no longer needs water supply, causing the decompression tank to overflow

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