Portable reverse flushing and cleaning device for pilot filter element of electro-hydraulic control main valve of hydraulic support

Abstract

The utility model relates to the technical field of pilot filter element flushing, in particular to a portable hydraulic support electro-hydraulic control main valve pilot filter element back flushing and cleaning device which comprises a flushing sleeve, a flushing pipe is arranged on the outer side of the flushing sleeve, liquid outlet holes are formed in the periphery of the flushing sleeve, and an outer sleeve is concentrically arranged on the periphery of the flushing sleeve. A limiting part is arranged on the outer sleeve and located on the opening side of the flushing sleeve. The flushing sleeve and a sealing ring of the pilot filter element form a sealing section, so that flushing liquid strictly flows reversely according to a preset path, a filter screen of the pilot filter element is reversely flushed, and the flux of the filter element is quickly recovered; under the action of the annular piece and the annular groove of the outer sleeve, automatic pressure reduction and speed reduction of flushing fluid are achieved, the flushing fluid is prevented from splashing after flowing out, meanwhile, the flushing sleeve and the high-pressure fluid flushing device are connected through the quick-connection type flushing pipe, and the device is overall light in weight, convenient to carry, simple in structure, reasonable in design, low in manufacturing cost and suitable for popularization and application. The device is especially suitable for being used in underground coal mine working sites.

Description

TECHNICAL FIELD

[0001] The utility model relates to pilot filter element reverse flushing technical field, concretely is a portable hydraulic support electro -hydraulic control main valve pilot filter element reverse flushing cleaning device. BACKGROUND

[0002] Hydraulic support as the core equipment of comprehensive mechanized coal mining complete equipment, cooperates with coal mining machine, scraper conveyor, bears key functions such as working face roof support, safety space guarantee and coal mining efficiency promotion. Its electro -hydraulic control system realizes the accurate control to the action of support through the integration sensor, solenoid valve group and controller, is the core technical module of guaranteeing support efficient operation and coal mine safety production.

[0003] At present, the pilot valve filter element of hydraulic support electro -hydraulic control system generally adopts the design of 25 μm filtration precision, is used to intercept the particulate contaminant in hydraulic oil, ensures the sensitivity and control precision of pilot valve core action. However, under the influence of factors such as coal mine underground operation environment and use length, the pilot valve core often appears the jam phenomenon, seriously restricts the operation of electro -hydraulic control system, according to statistics, the electro -hydraulic control system failure caused by the jam of pilot valve filter element accounts for more than 40% of the total failure rate of support, leads to problems such as support response delay, support force fluctuation, and even induces roof collapse accident seriously. Therefore, it is urgent to develop a portable and efficient device, which removes filter element pollutants by reverse fluid flushing, to quickly restore filter element flux, thereby prolonging the service life of electro -hydraulic control system and improving the safety of coal mining operation. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving above-mentioned problem, to provide a portable hydraulic support electro -hydraulic control main valve pilot filter element reverse flushing cleaning device.

[0005] The utility model solves the problem, and the technical scheme is as follows:

[0006] A portable hydraulic support electro -hydraulic control main valve pilot filter element reverse flushing cleaning device, including flushing sleeve, the whole cup type of flushing sleeve is set up in the through -hole in the bottom center of flushing sleeve, and the flushing pipe is set up at the position of through -hole on the outside of flushing sleeve;The end of flushing pipe is provided with quick -plug socket connected with high -pressure liquid flushing device, and the liquid outlet is set up on the periphery of flushing sleeve, and the outer sleeve is concentrically arranged on the periphery of flushing sleeve, and the outer sleeve is connected between the bottom of flushing sleeve through the annular pad plate, and the limiting portion is set up on the outer sleeve and located at the open side of flushing sleeve, and the limiting portion limits the position of pilot filter element inserted into flushing sleeve.

[0007] Further, the inner diameter of the flushing sleeve is matched with the size of the pilot filter element, and can form a seal through the sealing rings outside the upper mounting head and the lower connecting head of the pilot filter element, and the liquid outlet hole is located between the two sealing rings and the sealing section formed by the inner wall of the flushing sleeve; the two sealing rings and the flushing sleeve form a sealing section, the flushing liquid enters through the flushing pipe, then flows into the inside of the filter screen of the pilot filter element through the liquid outlet hole of the pilot filter element, then the flushing liquid flows from the inside of the filter screen to the outside of the filter screen, and then the impurities attached to the outside of the filter screen are taken away and flow into the outer sleeve through the liquid outlet hole on the flushing sleeve, so that the reverse flushing and cleaning of the filter screen of the pilot filter element are realized.

[0008] Further, the limiting part comprises an insertion rod, the outer sleeve is provided with an insertion hole for the insertion of the insertion rod, the top end of the insertion rod is fixed with a clamping block, the upper portion of the clamping block is connected with a pull ring, and the insertion rod is further provided with a fixing piece for fixing with the outer sleeve; the pilot filter element inserted into the flushing sleeve is limited, so that the pilot filter element is prevented from sliding out of the flushing sleeve during the flushing process.

[0009] Further, the fixing piece comprises an arc-shaped clamping piece with elasticity, the rod body of the insertion rod is penetrated into the arc-shaped clamping piece from the outer arc surface of the middle portion of the arc-shaped clamping piece, and the arc-shaped clamping piece can be clamped on the outer wall of the outer sleeve when the insertion rod is inserted into the insertion hole; the fixing piece is used for fixing the limiting part, so that the limiting part is prevented from loosening during the flushing process.

[0010] Further, a plurality of annular pieces are arranged on the inner wall of the outer sleeve at intervals, and annular grooves are formed between the adjacent two annular pieces; the flushing liquid flows into the outer sleeve from the flushing sleeve, and the effect of pressure reduction and speed reduction is realized under the action of the annular pieces and the annular grooves, so that the splashing of the flushing liquid after flowing out is prevented.

[0011] The utility model discloses the above technical scheme, compared with the prior art, its outstanding features are:

[0012] The utility model discloses simple structure, reasonable in design, low in manufacturing cost, and the flushing sleeve forms the sealing section through the sealing ring of upper mounting head and lower connecting head of pilot filter element, ensures that the flushing liquid strictly according to preset path reverse flow, carries out the reverse flushing to the filter screen of pilot filter element, and the filter core flux is recovered quickly, the flushing liquid is under the action of the annular piece and the annular groove of the outer sleeve, realizes automatic pressure reduction and speed reduction, prevents the splashing of the flushing liquid after flowing out, and simultaneously, the flushing sleeve of the device is connected with the high-pressure flushing device through the quick -witted type flushing pipe, and the whole is light in weight, is convenient for carrying, is especially suitable for the use in the coal mine underground work site. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the main body section structure schematic diagram of the use state of the embodiment of the utility model;

[0014] Figure 2 It is the assembly section structure schematic diagram of the flushing sleeve and the outer sleeve of the embodiment of the utility model;

[0015] Figure 3 The structure schematic view of the limiting part of the utility model embodiment is shown in the figure.

[0016] Figure 4 The main structure schematic view of the pilot filter element is shown in the figure.

[0017] The figure is marked as: the flushing sleeve 1, the flushing pipe 2, the outer sleeve 3, the limiting part 4, the pilot filter element 5, the annular pad plate 6, the through hole 11, the liquid outlet hole 12, the bevel 13, the quick-connection jack 21, the annular sheet 31, the jack 32, the insertion rod 41, the clamping block 42, the pull ring 43, the fixing piece 44, the upper mounting head 51, the lower connecting head 52, the filter screen 53, the sealing ring 54, the pilot filter element liquid outlet hole 55. Specific implementation

[0018] The utility model is further explained below in combination with the embodiment, and the purpose is only to better understand the contents of the utility model, therefore, the example does not limit the protection scope of the utility model.

[0019] Referring to Figures 1-4 A portable hydraulic support electro-hydraulic control main valve pilot filter element reverse flushing cleaning device, including flushing sleeve 1, the flushing sleeve 1 is cup-shaped as a whole, the bottom center of flushing sleeve 1 is provided with through hole 11, the inner ring of the opening end of flushing sleeve 1 is provided with bevel 13, which is convenient for quickly loading pilot filter element 5, prevents sealing ring 54 from being damaged during the loading of pilot filter element 5, flushing pipe 2 is arranged on the outer side of flushing sleeve 1 corresponding to the position of through hole 11, the end of flushing pipe 2 away from flushing sleeve 1 is provided with quick-connection jack 21 connected with high-pressure flushing device, the periphery of flushing sleeve 1 is provided with liquid outlet hole 12, the outer sleeve 3 is concentrically arranged on the periphery of flushing sleeve 1, the outer sleeve 3 is connected with the bottom of flushing sleeve 1 through the annular pad plate 6 arranged therebetween, the limiting part 4 is arranged on the outer sleeve 3 and located at the open side of flushing sleeve 1, and the limiting part 4 limits the position of pilot filter element 5 inserted into flushing sleeve 1.

[0020] Further, the inner diameter of flushing sleeve 1 is matched with the size of pilot filter element 5, and sealing can be formed through the sealing rings 54 on the outer sides of the upper mounting head 51 and the lower connecting head 52 of pilot filter element 5, and the liquid outlet hole 12 is located between the two sealing rings 54 and the sealing section formed by the inner wall of flushing sleeve 1; the two sealing rings 54 form a sealing section with flushing sleeve 1, flushing liquid enters through flushing pipe 2, then flows into the inner side of filter screen 53 of pilot filter element through pilot filter element liquid outlet hole 55, then the flushing liquid flows from the inner side of filter screen 53 to the outer side of filter screen 53, carries away the impurities attached to the outer side of filter screen 53, and then flows into outer sleeve 3 through liquid outlet hole 12 on flushing sleeve 1, to realize the reverse flushing cleaning of filter screen 53 of pilot filter element.

[0021] The limiting part 4 comprises an insertion rod 41, the outer sleeve 3 is provided with an insertion hole 32 for inserting the insertion rod 41, the top end of the insertion rod 41 is fixed with a clamping block 42, the upper portion of the clamping block 42 is connected with a pull ring 43, and the insertion rod 41 is further provided with a fixing part 44 for fixing with the outer sleeve 3; the leading filter element 5 inserted into the flushing sleeve 1 is limited, so that the leading filter element 5 is prevented from sliding out of the flushing sleeve 1 during the flushing process; the pull ring 43 and the flushing pipe 2 are connected through a chain anti-coming-off connection, so that the limiting part 4 is prevented from being lost.

[0022] The fixing part 44 comprises an elastic arc-shaped clamping block, the rod body of the insertion rod 41 is penetrated into the arc-shaped clamping block from the middle portion of the outer arc surface of the arc-shaped clamping block, the arc-shaped clamping block can be clamped on the outer wall of the outer sleeve 3 when the insertion rod 41 is inserted into the insertion hole 32; the fixing part 44 is used for fixing the limiting part 4, so that the limiting part 4 is prevented from loosening during the flushing process.

[0023] A plurality of annular pieces 31 are arranged on the inner wall of the outer sleeve 3 at intervals, and annular grooves are formed between the adjacent two annular pieces 31; the flushing liquid flows into the outer sleeve 3 from the flushing sleeve 1, and the annular pieces 31 and the annular grooves are used to realize the effect of pressure reduction and speed reduction, so that the flushing liquid is prevented from splashing after flowing out.

[0024] In use, the device is connected with a high-pressure liquid flushing device through the quick connection insertion hole 21 of the flushing pipe 2, the pull ring 43 is pulled upward, the limiting part 4 is disassembled, the leading filter element 5 is loaded into the flushing sleeve 1, the liquid outlet hole 55 of the leading filter element 5 is opposite to the through hole 11, the limiting part 4 is reassembled, the insertion rod 41 is inserted into the insertion hole 32, the arc-shaped clamping block is clamped on the outer wall of the outer sleeve 3, the insertion rod 41 limits the leading filter element 5, so that the leading filter element 5 is prevented from sliding out of the flushing sleeve 1 during the flushing process, the high-pressure liquid flushing device is started, the flushing liquid flows into the inside of the leading filter element 5 through the through hole 11 and the liquid outlet hole 55 of the leading filter element in turn, the flushing liquid flows from the inside of the filter screen 53 to the outside of the filter screen 53, the impurities attached to the outside of the filter screen 53 are carried away, and then the flushing liquid flows into the outer sleeve 3 through the liquid outlet hole 12 on the flushing sleeve 1, so that the reverse flushing and cleaning of the filter screen 53 of the leading filter element are realized.

[0025] The device has the advantages of simple structure, reasonable design, low manufacturing cost, sealed section formed by the sealing ring of the upper mounting head and the lower connecting head of the leading filter element and the flushing sleeve, strict reverse flow of the flushing liquid according to the preset path, reverse flushing of the filter screen of the leading filter element, quick recovery of the filter element flux, automatic pressure reduction and speed reduction of the flushing liquid under the action of the annular pieces and the annular grooves of the outer sleeve, prevention of splashing of the flushing liquid after flowing out, connection of the flushing sleeve of the device and the high-pressure liquid flushing device through the quick connection flushing pipe, overall light weight, convenience in carrying, and suitability for use in the working site of a coal mine.

[0026] The above merely describes the preferred and feasible embodiments of the present application, and is not intended to limit the scope of the present application, and any equivalent changes made according to the content of the present application and the drawings are included in the scope of the present application.

Claims

1. A portable hydraulic support electro-hydraulic main valve pilot filter element reverse flushing cleaning device, comprising a flushing sleeve, characterized in that: The flushing sleeve is cup-shaped, with a through hole at the center of the bottom. A flushing pipe is provided on the outer side of the flushing sleeve corresponding to the through hole. The end of the flushing pipe is provided with a quick-connect insertion hole for connecting to a high-pressure flushing device. An outlet hole is provided around the periphery of the flushing sleeve. An outer sleeve is concentrically provided around the outer periphery of the flushing sleeve. The outer sleeve is connected to the bottom of the flushing sleeve by an annular gasket. A limiting part is provided on the outer sleeve and on the open side of the flushing sleeve. The limiting part restricts the position of the pilot filter element inserted into the flushing sleeve.

2. The portable hydraulic support electro-hydraulic main valve pilot filter element reverse flushing cleaning device according to claim 1, characterized in that: The inner diameter of the flushing sleeve is matched with the size of the pilot filter element, and a seal is formed by the sealing rings on the outside of the upper mounting head and the lower connecting head of the pilot filter element. The liquid outlet is located between the sealing section formed by the two sealing rings and the inner wall of the flushing sleeve.

3. The portable hydraulic support electro-hydraulic main valve pilot filter element reverse flushing cleaning device according to claim 1, characterized in that: The limiting part includes a plug rod, and the outer sleeve has a plug hole for inserting the plug rod. A locking block is fixed at the top of the plug rod, and a pull ring is connected above the locking block. The plug rod is also provided with a fixing member for fixing to the outer sleeve.

4. The portable hydraulic support electro-hydraulic main valve pilot filter element reverse flushing cleaning device according to claim 3, characterized in that: The fastener includes an elastic arc-shaped clip, through which the rod extends inward from the center of the outer arc surface of the arc-shaped clip. As the rod is inserted into the insertion hole, the arc-shaped clip can be secured to the outer wall of the outer sleeve.

5. The portable hydraulic support electro-hydraulic main valve pilot filter element reverse flushing cleaning device according to claim 1, characterized in that: Multiple annular plates are spaced apart on the inner wall of the outer sleeve, and annular grooves are formed between adjacent annular plates.

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