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Backwash filter device and working face hydraulic system

A backwash filtration and filter technology, which is applied to fluid pressure actuation system components, fluid pressure actuation devices, mechanical equipment, etc., can solve problems such as unsatisfactory backwash effects

Active Publication Date: 2015-06-10
SANY HEAVY EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the maximum flow that this method of backwashing can provide is the output flow of the pump, and the backwashing effect is not ideal

Method used

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  • Backwash filter device and working face hydraulic system

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Embodiment Construction

[0041] It should be pointed out that the description and sequence of specific structures in this section are only descriptions of specific embodiments, and should not be considered as limiting the protection scope of the present invention. In addition, the embodiments in this section and the features in the embodiments can be combined with each other under the condition of no conflict.

[0042] Please refer to figure 1 , the present invention will be described in detail below in conjunction with embodiment.

[0043] As shown in the figure, the backwash filter device of this embodiment includes the first reversing valve 3, the second reversing valve 5, the first filter 10, the second filter 9, the first pilot Valve 4, second pilot valve 6 and accumulator 7.

[0044] Wherein, the first reversing valve 3 and the second reversing valve 5 are both hydraulic control valves; the liquid inlet of the first filter 10 is selectively connected to the liquid inlet channel 01 or the liqui...

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Abstract

The invention discloses a backwash filter device and a working face hydraulic system. The backwash filter device comprises a first reversing valve, a second reversing valve, a first filter, a second filter and an energy accumulator. A liquid inlet of the first filter is selectively connected to a liquid inlet passage or a liquid outlet passage through the first reversing valve. A liquid outlet of the first filter is connected to the liquid outlet passage. A liquid inlet of the second filter is selectively connected to the liquid inlet passage or the liquid outlet passage through the second reversing valve. A liquid outlet of the second filter is connected to the liquid outlet passage. The energy accumulator is connected to the liquid outlet passage. By the backwash filter device, backwash flow and backwash effects of filters can be improved effectively. In addition, the backwash filter device is low in required components, simple in structure and low in cost.

Description

technical field [0001] The invention relates to the technical field of backwashing and filtration, in particular to a backwashing and filtering device and a working face hydraulic system. Background technique [0002] In the underground environment of coal mines, emulsion pumps are generally used to provide emulsion for hydraulic equipment such as hydraulic supports. Excessive harmful impurities in the emulsion will seriously affect the normal operation of the hydraulic system, for example, the small gaps between the relative moving parts in the hydraulic components and the throttle holes and gaps will be stuck or blocked. [0003] Therefore, before the emulsion enters the hydraulic system, it needs to be filtered through the filter. However, after a long time of use, the impurities on the filter element will accumulate more and more, resulting in a decrease in the filter performance of the filter. Unable to meet the filtration needs of emulsion. [0004] In the prior art,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B21/04F15B21/08
Inventor 高明尚心志常镝
Owner SANY HEAVY EQUIP CO LTD