Liquid-phase distribution self-cleaning device for emulsion liquid pumping plant

Abstract

The invention discloses a liquid-phase distribution self-cleaning device for an emulsion liquid pumping plant. The liquid-phase distribution self-cleaning device comprises an oil tank, a low-pressure filter system, an emulsion liquid pump system and a high-pressure filtering system, wherein the low-pressure filter system comprises a low-pressure filter I, a low-pressure filter II, a low-pressure filter III and a low-pressure filter V; the emulsion liquid pump system comprises an emulsion liquid pump I and an emulsion liquid pump II; and the high-pressure filter system comprises a high-pressure filter I and a high-pressure filter II, and further comprises a by-pass valve set. By adopting the two shunt-wound low-pressure filters, the cleaning cycle of the low-pressure filters can be lengthened to be synchronous with the high-pressure filters; by additionally arranging reverse-cleaning valve set pipelines between the liquid outlets of the emulsion liquid pumps and the liquid inlets of both the high-pressure filters and the low-pressure filters, the filtering and self-cleaning effect in a liquid supplying system of the emulsion liquid pumping plant can be realized; the starting and closing state of the reverse-cleaning valve set pipelines can be controlled only by two three-position three-way solenoid valves and two two-postion two-way solenoid valves, so that the power consumption of the system is low, and complex underground working condition can be adapted.

Description

technical field [0001] The invention relates to a coal mining safety production equipment, in particular to a liquid phase distribution self-cleaning device suitable for an emulsion pumping station underground in a coal mine. Background technique [0002] In the mining machinery industry, high-pressure emulsion provides power for equipment such as underground hydraulic support systems and hydraulic single props. However, the solid particle impurities in the emulsion have always affected the normal operation of the emulsion pumping station, and the failure of hydraulic components directly related to the downhole emulsion system is mostly attributed to the pollution of the emulsion medium. [0003] The most direct and effective method for solid particles in the emulsion is to set up a filtration system in the hydraulic circuit. However, there are many deficiencies in the current filtration system of the emulsion pumping station, which are mainly manifested in: 1) Most of the ...

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Problems solved by technology

However, there are many deficiencies in the current filtration system of the emulsion pumping station, which are mainly manifested in: 1) Most of the filters in the current filtration system are "straight-through". Replace the filter element; 2) The filter setting of the existing emulsion pump station is unreasonable, the cleaning cycle of the high-pressure filter and the low-pressure filter are different, and the low-pressure filter is more likely to be blocked than the high-pressure filter; 3) Even if some pump stations Equipped with backwashing equipment, but the backwashing equipment for high-pressure filter and low-pressure filter is a huge project, and they are two independent systems, with high power consumption and low reliability; 4) The degree of automation of the emulsion pumping station is low, The pumping stations in underground coal mines need special workers to be on duty, and the noise of the pumping stations is extremely detrimental to the physical and mental health of workers

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