Air channel and water channel combined hydraulic control backflushing filter
A filter and water dual technology, applied in fixed filter element filters, filtration separation, chemical instruments and methods, etc., can solve the problems of high production cost, complex structure of automatic backwashing liquid return filter, etc., and achieve low production cost. , Simple structure and high reliability
Pending Publication Date: 2019-03-01
丰隆高科液压股份有限公司
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Problems solved by technology
[0006] Therefore, the technical problem to be solved by the present invention is to overcome the technical defects of complex structure and high production cost of the automatic backwash liquid return filter in the prior art, thereby providing a gas-water filter with simple structure, low production cost and high reliability. Two-way hydraulic control recoil filter
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[0041] This embodiment provides an air-water two-way hydraulic control recoil filter, such as figure 1 and 4 As shown, it includes a filter body 1, and a liquid inlet 11 arranged in sequence on the filter body 1, a recoil chamber 12 equipped with a sewage joint, a filter chamber 13 equipped with a filter assembly, and an outlet The liquid port 15, the sewage discharge joint includes: a sewage discharge valve body 2, a first valve cavity 21 with a middle passage, and a liquid inlet 11 and a sewage discharge port 17 respectively arranged at both ends of the first valve cavity 21, the sewage discharge The length direction of the valve body 2 is provided with a filter port 23 communicating with the first valve cavity 21 and the filter screen cavity 13 respectively; the sewage valve core 3 is movably installed in the first valve cavity 21, It has a liquid inlet position that moves toward the drain outlet 17 under the driving force of the liquid inlet to close the drain outlet 17 a...
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The invention provides an air-water dual path hydraulic control backflushing filter. The filter comprises a filter body, a liquid inlet, a backflushing cavity, a filter screen cavity and a liquid outlet, wherein the liquid inlet, the backflushing cavity, the filter screen cavity and the liquid outlet are formed in the filter body and communicated in sequence, the backflushing cavity is provided with a sewage discharging joint, and the filter screen cavity is provided with a filter screen assembly. The sewage discharging joint comprises a sewage discharging valve and a sewage discharging valveelement, wherein the sewage discharging valve comprises a through first valve cavity, a liquid inlet and a sewage outlet, the liquid inlet and the sewage outlet are formed in the two ends of the firstvalve cavity respectively, and filter openings communicated with the first valve cavity and the filter screen cavity respectively are formed in the length direction of the sewage discharging valve; the sewage discharging valve element is movably installed in the first valve cavity and provided with a liquid inlet position and a sewage discharging position; under the inflowing liquid acting force,the liquid inlet position is driven to move towards the sewage outlet so as to close the sewage outlet to make the filter screen cavity communicated with the liquid inlet; under the backflushing liquid acting force, the sewage discharging position is driven to move towards the liquid inlet so as to close the liquid inlet to make the filter screen cavity communicated with the sewage outlet. By arranging the sewage discharging joint, control over the liquid inlet and the sewage discharging outlet can be achieved, compared with the prior art, the structure is simple, and the production cost is low.
Description
technical field [0001] The invention relates to the technical field of coal mine backwashing devices, in particular to an air-water dual-path liquid-controlled backwash filter. Background technique [0002] The working medium used in the coal mine hydraulic support system is an emulsion. Due to the harsh underground conditions of the coal mine, there are inevitably impurities. If the impurities cannot be removed in time, the impurities will pollute other hydraulic components during the normal operation of the system, resulting in the hydraulic system. Parts are malfunctioning, out of control, or even damaged. [0003] At present, in the process of impurity backwashing, electromagnetic pilot valves or manually operated reversing valves are mainly used to open or close the liquid inlet, liquid outlet and backflush port. Close, open the sewage outlet; when the impurities are discharged from the sewage outlet, then close the sewage outlet, open the liquid inlet and outlet. How...
Claims
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Login to View More IPC IPC(8): B01D29/68
CPCB01D29/68
Inventor 洪凌海王琛李竹洋张冰珏
Owner 丰隆高科液压股份有限公司