Mine water reuse system and backwashing method thereof

Abstract

The invention relates to a mine water reuse system and a backwashing method thereof. The existing mine water filtering tank is easy to run sand during backwashing. The mine water reuse system comprises a raw water pool, a raw water pump, N filtering tanks, a clear water bin, a water supply pump and a water supply pipe network, a screen supporting plate is arranged in each filtering tank, a filtering medium is arranged on each screen supporting plate, a folding type blocking net mechanism is arranged above each filtering medium, and each folding type blocking net mechanism comprises two semicircular net plates and two half shafts, each semicircular screen plate consists of a D-shaped frame and a metal net in the middle of the D-shaped frame, two opposite shaft seal holes are formed in the side wall of the filtering tank above the filtering medium, an L-shaped rotating shaft is arranged in each shaft seal hole, the outer ends of the two half shafts are coaxially fixed with the inner ends of the two L-shaped rotating shafts respectively, and the two half shafts can rotate respectively under the driving of the L-shaped rotating shafts. And the corresponding semicircular screen plates are driven to be switched between a horizontal state and a vertical state. The device has the advantages of being simple in structure, convenient to use and capable of automatically balancing stress, and is suitable for underground coal mines.

Description

technical field [0001] The invention relates to a mine water reuse system and a backwashing method thereof. Background technique [0002] At present, the traditional mine water is treated on the ground. It not only needs to pressurize the mine water from the underground to the surface, but also needs to use pipelines to supply water to the underground after treatment. This not only increases the power cost and is difficult to maintain, but also due to the underground environment. It is complex and changeable, and the water transmission line is far away, so there are relatively large unsafe factors, which bring hidden dangers to the production safety of coal mines. [0003] The Chinese invention published on May 18, 2021 with publication number CN 112811675 A discloses a method for treating mine water in underground coal mines. The Chinese invention published on September 07, 2021 with publication number CN 113354151 A discloses a method for treating mine water in undergroun...

AI Technical Summary

Problems solved by technology

[0004] In practice, multiple filter tanks with filter media in parallel connection are often used. During the backwashing operation of the filter tank, the backflush water flow is difficult to control. Poor; the recoil water flow is large, and the filter medium is easily washed out, forming sand running

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