High and low-pressure backwashing filter device for hydraulic bracket

A technology of backwash filtration and hydraulic support, which is applied to fluid pressure actuating devices, fluid pressure actuating system components, mechanical equipment, etc. The effect of prolonging the service life and improving the filtering precision

Inactive Publication Date: 2011-05-25
中煤机械集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the operation of the existing high and low pressure fi

Method used

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  • High and low-pressure backwashing filter device for hydraulic bracket
  • High and low-pressure backwashing filter device for hydraulic bracket
  • High and low-pressure backwashing filter device for hydraulic bracket

Examples

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Example Embodiment

[0019] The following embodiments will be used to further illustrate the present invention in conjunction with the drawings.

[0020] figure 1 , figure 2 The high and low pressure filter device for hydraulic support of the present invention includes 8 filters installed outside the sewage tank 7, among which four high pressure filters 4 are installed on one side of the sewage tank 7, and are connected to the high pressure inlet of the hydraulic system. The pipeline is connected, and four low-pressure filters 5 are installed on the other side of the sewage tank 7 and communicate with the low-pressure return pipeline of the hydraulic system.

[0021] A reversing valve 6 is provided at the liquid inlet of each filter, and the reversing valve 6 is a two-position three-way spherical manual reversing valve. The liquid inlet of the reversing valve 6 is in communication with the discharge pipe of the pump station 1 or the liquid return pipe of the hydraulic support 2, and the liquid outlet ...

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Abstract

The invention discloses a high and low-pressure backwashing filter device for a hydraulic bracket, and belongs to the field of filter devices for mines. The device comprises a high-pressure filter group (4) and a low-pressure filter group (5), which consist of at least one parallel filter respectively; a reversing valve (6) is arranged at the liquid inlet of each filter, the liquid inlet of the reversing valve (6) is communicated with the liquid discharge pipeline of a pump station (1) or the liquid return pipeline of a hydraulic bracket (2), the liquid outlet of the reversing valve (6) is communicated with the liquid inlet of the filter, and the blow-off port of the reversing valve (6) is communicated with a blow-off oil tank (7) through a blow-off pipeline; and the filter realizes two working states of filtering and backwashing by the switching of the reversing valve (6). The filter is connected with the reversing valve, and the handle switching working state of each reversing valve is rotate, so the operation is simple, convenient, intuitive and clear.

Description

technical field [0001] The invention belongs to the field of filter devices, in particular to a filter device for a hydraulic system of a mine hydraulic support. Background technique [0002] The working environment of the hydraulic system of the mining hydraulic support is harsh. Impurities in the emulsion as the medium of the hydraulic system will cause the hydraulic support to operate ineffectively or even be damaged, which is one of the important reasons for the failure of production equipment. Now, the use of precision proportional valves and servo valves on the hydraulic support has greatly improved the cleanliness requirements of the emulsion pump station. The filtration accuracy of the pump station itself can no longer meet the requirements of the hydraulic support, so a separate set must be installed The filter device is used for precise filtration of the emulsion entering the hydraulic support. However, most of the existing filter stations only filter the high-pre...

Claims

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Application Information

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IPC IPC(8): F15B21/04
Inventor 杨加平杨勇王秀云尚灿坡郑巨静
Owner 中煤机械集团有限公司
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