A hydraulic support for coal mines

Abstract

The present invention relates to the technical field of hydraulic supports, specifically a hydraulic support for coal mines, comprising a base, wherein a uniformly distributed first hydraulic cylinder is fixedly mounted on the outer surface of the upper end of the base near the left edge, a connecting beam is fixedly mounted on the outer surface of the left end of the first hydraulic cylinder, the upper outer surface of the connecting beam is movably connected to a fixed beam, a telescopic beam is provided on the outer surface of the right side of the fixed beam, a uniformly distributed second hydraulic cylinder is fixedly mounted on the outer surface of the lower end of the fixed beam, a filter body is provided at the lower end of the second hydraulic cylinder, the lower outer surface of the filter body is fixedly connected to the base, and the inner surface of the filter body is fixedly connected to a liquid inlet end near the left edge. By providing a first shell, the present invention can save labor costs by eliminating the need to stop the machine to replace the filter element or remove the filter element for cleaning when the filter element is clogged with impurities, while ensuring coal mining efficiency and improving overall practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic supports, in particular to a hydraulic support for coal mines. Background Art

[0002] With the continuous improvement of fully mechanized coal mining technology, especially the widespread application of electro-hydraulic control systems and the refined manufacturing of hydraulic system valves, the requirements for emulsion media in underground coal mines are becoming increasingly stringent. Installing a filter at the fluid inlet of each hydraulic support can not only effectively extend the service life of various hydraulic system components, reduce maintenance and repair costs, but also improve the efficiency of the support.

[0003] In the existing technology, most hydraulic support filters must be shut down to replace the filter element or remove the filter element for cleaning when the filter element is clogged by impurities, which is time-consuming and labor-intensive, affects the efficiency of coal mining, and is inconvenient to disassemble and assemble. At the same time, although the filters in the existing technology have made great progress and improvements in flow rate, filtration accuracy, and valve core replacement, they are unable to effectively intercept and filter deadly pollutants: metal impurities such as iron filings. Due to the particularity of metal impurities, they often damage the filter screen under long-term high-pressure impact, thereby polluting the entire hydraulic system, resulting in large-scale repair and replacement of hydraulic components.

[0004] Therefore, a hydraulic support for coal mines is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a hydraulic support for coal mines to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a hydraulic support for coal mines, comprising a base, wherein the outer surface of the upper end of the base is fixedly installed with a uniformly distributed first hydraulic cylinder near the left edge position, the outer surface of the left end of the first hydraulic cylinder is fixedly installed with a connecting beam, the outer surface of the upper end of the connecting beam is movably connected with a fixed beam, the outer surface of the right side of the fixed beam is provided with a telescopic beam, the outer surface of the lower end of the fixed beam is fixedly installed with a uniformly distributed second hydraulic cylinder, the lower end of the second hydraulic cylinder is provided with a filter body, and the outer surface of the lower end of the filter body is fixed to the base The filter body is connected, the inner surface of the filter body is fixedly connected with a liquid inlet end near the left edge position, the inner surface of the filter body is fixedly installed with a liquid outlet end near the right edge position, a filter element is provided inside the filter body, and a cleaning mechanism is provided on the outside of the annular outer surface of the filter body near the filter element. The annular outer surface of the liquid inlet end and the liquid outlet end in contact with the filter body are all provided with evenly distributed fixing mechanisms. A liquid inlet is provided through the middle position of the left outer surface of the liquid inlet end, and a liquid outlet is provided through the middle position of the right outer surface of the liquid outlet end;

[0007] The cleaning mechanism includes a first shell, a first water inlet, a second water inlet, a water inlet pipe, a first water outlet, a second shell, an elastic rope, a second water outlet, an auxiliary mechanism, a first control valve, a second control valve, a water outlet pipe, a third control valve, a sliding groove and a sliding block. The first shell is composed of a semicircular ring component. The first water inlet is provided on the right outer surface of the first shell near the upper edge. The second water inlet is provided at a position corresponding to the first water inlet of the liquid outlet end. One end of the second water inlet is connected with the first water inlet, and one end of the second water inlet extends to the outside of the filter body through the liquid outlet end. The top surface of the first shell is connected with evenly distributed water inlet pipes, and the water inlet pipe is connected with the first water inlet. The inner surface of the first shell is connected with evenly distributed first water outlets. The interior of the first shell is close to the first water inlet on both sides. The two groups of second shells are movably connected, and two sliding grooves are symmetrically provided on both sides of the left inner surface of the first shell near the first water inlet. Sliding blocks are fixedly installed on the upper edge position of the outer surface of one side of the two groups of second shells, and the two groups of sliding grooves are slidably connected to the second shell through the sliding blocks. The inner top surfaces of both sides of the first shell are fixedly installed with evenly distributed elastic ropes, one end of the elastic rope is fixedly connected to the inner bottom surface of the second shell, and the inner surface of the second shell is penetrated by evenly distributed second water outlets. An auxiliary mechanism is provided near the right edge position of the inner surface of the liquid inlet end head, a first control valve is provided on the inner surface of the liquid inlet end head near the left side of the auxiliary mechanism, a second control valve is provided on the inner surface of the liquid outlet end head near the right side, and a water outlet pipe is penetrated by the inner surface of the liquid outlet end head near the left side of the second control valve, and a third control valve is provided inside the water outlet pipe.

[0008] In the prior art, most hydraulic support filter bodies must be shut down to replace the filter element or remove the filter element for cleaning when the filter element is clogged with impurities, which is time-consuming and labor-intensive, affecting the efficiency of coal mining. The present invention provides a first housing. When the filter element inside the filter body is clogged with impurities and needs to be cleaned, first, power is applied to control the first control valve and the second control valve to be closed, and then power is applied to control the third control valve to be open. Then, water begins to flow in through the second water inlet, and water enters the first water inlet from the second water inlet. Since the first water outlet and the second water outlet are staggered, cavities are provided inside the first and second housings. When the first and second housings are in a closed state, the first and second water outlets are in a closed state. By setting the first and second housings in a closed state, the problem of reducing the flow rate of the emulsion around the filter element due to the open state of the first and second housings when the filter body is working is avoided. When water fills the interior of the first housing in the closed state, since water is continuously added, the impact force of the water flow overcomes the elastic force of the elastic rope, causing the first housing and the second housing to be closed. The second housing separates until the bottoms of the two sets of second housings touch. Since water is continuously added, the added water has high pressure. Although the water pressure will be dispersed by the first and second water outlets exposed when the first and second housings are separated, the forward impact force of the water is still sufficient to separate the first and second housings, and the bottoms of the two sets of second housings touch and remain in an open state. Since one end of the filter element is open, the first and second housings now completely wrap the filter element. Water flows out from the first and second water outlets, and the pressurized water impacts and cleans the filter element. Since the filter element is a pure metal hydraulic oil filter made of stainless steel, the impact of the water flow can flush out impurities in the filter element. The cleaned waste water is discharged from the liquid outlet through the outlet pipe. When cleaning is completed, water is stopped from entering, and the elastic force of the elastic rope causes the first and second housings to close again, making it convenient for the next use. Therefore, when the filter element is clogged with impurities, there is no need to stop the machine to replace the filter element or remove the filter element for cleaning, saving labor costs, while ensuring coal mining efficiency and improving overall practicality.

[0009] Preferably, the auxiliary mechanism includes a mounting groove, a connecting rod and a magnet. Two groups of mounting grooves are symmetrically opened on the inner surface of the liquid inlet end near the right edge. Connecting rods are installed inside the two groups of mounting grooves. The connecting rods are a T-shaped component, and the magnets are rotatably connected between the two groups of connecting rods.

[0010] During operation, metal impurities such as iron filings cannot be effectively intercepted and filtered. Due to the special shape of metal impurities, they often damage the filter screen under long-term high-pressure impact, thereby polluting the entire hydraulic system, resulting in large-scale repair and replacement of hydraulic components, and affecting the cleaning effect of the cleaning mechanism. The present invention sets a mounting groove. When the emulsion enters the filter element from the liquid inlet, the emulsion will first impact the magnet. During the impact, the magnet can adsorb and clean the metal impurities inside the emulsion. By setting a connecting rod to be rotatably connected to the magnet, the magnet rotates during the impact of the emulsion, thereby ensuring that each side surface of the magnet can play an adsorption role, thereby effectively intercepting and filtering metal impurities such as iron filings, preventing the filter element from being damaged, ensuring the normal operation of the filter body as a whole, and improving overall practicality.

[0011] Preferably, a stop plate is slidably connected to the inside of the installation slot near the left side of the connecting rod, and the sum of the lengths of the connecting rod and the stop plate is equal to the length of the installation slot.

[0012] During operation, the magnet will move inside the installation groove under the impact force of the emulsion, affecting the effect of the magnet in adsorbing metal impurities such as iron filings. The present invention provides a back plate. When the back plate is installed into the installation groove, the sum of the lengths of the connecting rod and the back plate is equal to the length of the installation groove. When the liquid inlet end is installed into the filter body, the back plate and the left end outer surface of the filter element will conflict with each other. Therefore, after the installation is completed, the resistance between the filter element and the back plate is transmitted to the connecting rod through the back plate, fixing the connecting rod inside the installation groove. When it is necessary to clean the iron filings and other metal impurities adsorbed on the magnet, it is only necessary to remove the liquid inlet end to cancel the resistance between the filter element and the back plate. At this time, the back plate can be removed to remove the connecting rod, and the iron filings and other metal impurities adsorbed on the magnet can be cleaned, thereby fixing the magnet inside the installation groove, ensuring the effect of the magnet in adsorbing metal impurities such as iron filings and improving overall practicality.

[0013] Preferably, the fixing mechanism includes a first connecting groove, a fixing plate, a third water inlet, a threaded tube, a spring, a connecting block, a connecting column, a second connecting groove and a rubber pad. The fixing plate is fixedly installed near the lower end position on the inner surface of the first connecting groove, and the third water inlet is provided through the middle position of the lower end outer surface of the fixing plate. The threaded tube is fixedly installed on the outer side of the upper end outer surface of the fixing plate near the third water inlet, and the connecting block is fixedly installed on the upper end outer surface of the threaded tube. The spring is fixedly installed on the upper end outer surface of the fixing plate near the outer surface of the threaded tube, and the upper end outer surface of the spring is fixedly connected to the connecting block. Evenly distributed connecting columns are fixedly installed on the outer surfaces of both sides of the connecting block. A second connecting groove is provided at a position corresponding to the first connecting groove inside the filter body, and a rubber pad is fixedly installed on the inner side of the second connecting groove.

[0014] During operation, although the filter body can effectively increase the service life of various components of the hydraulic system, reduce maintenance and repair costs, and improve the efficiency of the bracket, the tightness of the connection between the liquid inlet end, the liquid outlet end and the filter body affects the working effect of the filter body. If the tightness of the connection between the liquid inlet end, the liquid outlet end and the filter body is too low, it will cause the emulsion to leak sideways, reduce the pressure of the emulsion, and affect the normal operation of hydraulic components such as the first hydraulic cylinder and the second hydraulic cylinder. The present invention sets a first connecting groove. When the emulsion starts to be introduced after the liquid inlet end is installed in the filter body, it first powers on to control the first control valve to be closed. At this time, the first connecting groove with pressure is then passed through the middle position of the fixed plate. The third water inlet is set to enter the threaded tube, overcoming the elastic force of the spring to push the connecting block from the first connecting groove into the second connecting groove. The connecting column squeezes the rubber pad to increase the friction between the connecting block and the second connecting groove, and cooperates with the extrusion force of the emulsion to fix the connecting block inside the second connecting groove, and fix the liquid inlet end and the filter body together. When the emulsion is stopped, the extrusion of the emulsion on the connecting block disappears, and the spring returns to its original state. In the process of returning to its original state, the connecting block is brought back to the first connecting groove, which is convenient for the next use of the fixing mechanism or the disassembly between the liquid inlet end and the filter body, thereby ensuring the tightness of the connection between the liquid inlet end, the liquid outlet end and the filter body, ensuring the working effect of the filter body, and improving the overall practicality.

[0015] Preferably, fixing blocks are fixedly mounted on both side outer surfaces of the filter element, a fixing block is fixedly mounted on the left outer surface of the first shell, and fixing grooves are provided at positions inside the filter body corresponding to the fixing blocks.

[0016] During operation, a fixing block is set. During installation, the filter element, the first shell and the liquid inlet and outlet ends are connected together through the fixing block and the fixing groove, so that the filter element and the first shell are fixed between the liquid inlet and outlet ends through the extrusion force exerted on the filter element and the first shell after the installation of the liquid inlet and outlet ends. At the same time, when the filter element or the first shell needs to be disassembled, it is only necessary to stop delivering the emulsion so that the extrusion of the emulsion on the connecting block disappears, and then the liquid inlet and outlet ends are disassembled to cancel the extrusion force exerted on the filter element and the first shell after the installation of the liquid inlet and outlet ends. Then, the filter element or the first shell can be disassembled, thereby ensuring the degree of fixation of the filter element and the first shell after installation. At the same time, when the filter element or the first shell needs to be disassembled, it is convenient to disassemble, thereby improving overall practicality.

[0017] Preferably, the fixing block is an annular component, and the difference in width between the fixing groove and the fixing block is one centimeter to two centimeters.

[0018] During operation, the present invention sets the fixing block as an annular component to ensure that after the fixing block and the fixing groove are installed, the filter element, the first shell and the liquid inlet end and the liquid outlet end are connected effectively, and the extrusion force generated on the filter element and the first shell after the installation of the liquid inlet end and the liquid outlet end is ensured. By setting the difference in width between the fixing groove and the fixing block to one centimeter to two centimeters, it is ensured that when the filter element or the first shell needs to be disassembled, the fixing block can be well separated from the fixing groove, thereby improving overall practicality.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By providing the first shell, the present invention does not need to stop the machine to replace the filter element or remove the filter element for cleaning when the filter element is clogged by impurities, thereby saving labor costs, ensuring coal mining efficiency, and improving overall practicality.

[0021] 2. The present invention effectively intercepts and filters metal impurities such as iron filings by providing an installation groove, thereby preventing the filter element from being damaged, ensuring the normal operation of the filter body as a whole, and improving overall practicality.

[0022] 3. The present invention ensures the tightness of the connection between the liquid inlet end, the liquid outlet end and the filter body by providing the first connecting groove, thereby ensuring the working effect of the filter body and improving the overall practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a complete structural diagram of the present invention;

[0024] Figure 2 This is a cross-sectional structural view of the filter body of the present invention;

[0025] Figure 3 This is a partial structural view of the cleaning mechanism of the present invention;

[0026] Figure 4 For the present invention Figure 3 Front view of the cross-section structure;

[0027] Figure 5 This is a left side cross-sectional structural view of the cleaning mechanism of the present invention;

[0028] Figure 6 This is an enlarged structural view of point A of the present invention;

[0029] Figure 7 This is an enlarged structural view of point B of the present invention;

[0030] Figure 8 This is a structural view of the connection between the connecting rod and the mounting groove of the present invention;

[0031] Figure 9 This is an enlarged structural view of point C of the present invention.

[0032] In the figure: 1. base; 2. first hydraulic cylinder; 3. connecting beam; 4. fixed beam; 5. telescopic beam; 6. second hydraulic cylinder; 7. filter body; 8. liquid inlet terminal; 9. liquid outlet terminal; 10. filter element; 11. cleaning mechanism; 111. first shell; 112. first water inlet; 113. second water inlet; 114. water inlet pipe; 115. first water outlet; 116. second shell; 117. elastic rope; 118. second water outlet; 119. auxiliary mechanism; 1191. mounting groove; 1192. connecting rod; 1193. magnet ;1194, abutment plate;1110, first control valve;1111, second control valve;1112, water outlet pipe;1113, third control valve;1114, sliding groove;1115, sliding block;12, fixing mechanism;121, first connecting groove;122, fixing plate;123, third water inlet;124, threaded pipe;125, spring;126, connecting block;127, connecting column;128, second connecting groove;129, rubber pad;1210, fixing block;1211, fixing groove;13, liquid inlet;14, liquid outlet. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" and the like to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0036] See also Figures 1 to 9 , the present invention provides a technical solution for hydraulic supports for coal mines:

[0037] A hydraulic support for coal mines, such as Figures 1 to 5 As shown, it includes a base 1, an outer surface of the upper end of the base 1 is fixedly installed with a uniformly distributed first hydraulic cylinder 2 near the left edge position, a connecting beam 3 is fixedly installed on the outer surface of the left end of the first hydraulic cylinder 2, the outer surface of the upper end of the connecting beam 3 is movably connected with a fixed beam 4, the right outer surface of the fixed beam 4 is provided with a telescopic beam 5, the outer surface of the lower end of the fixed beam 4 is fixedly installed with a uniformly distributed second hydraulic cylinder 6, the lower end of the second hydraulic cylinder 6 is provided with a filter body 7, the outer surface of the lower end of the filter body 7 is fixedly connected to the base 1, and the inner surface of the filter body 7 is near the left A liquid inlet end 8 is fixedly connected to the side edge position, a liquid outlet end 9 is fixedly installed on the inner surface of the filter body 7 near the right edge position, a filter element 10 is provided inside the filter body 7, and a cleaning mechanism 11 is provided on the outside of the annular outer surface of the filter body 7 near the filter element 10. The annular outer surfaces of the liquid inlet end 8 and the liquid outlet end 9 in contact with the filter body 7 are all provided with evenly distributed fixing mechanisms 12. A liquid inlet 13 is opened through the middle position of the left outer surface of the liquid inlet end 8, and a liquid outlet 14 is opened through the middle position of the right outer surface of the liquid outlet end 9;

[0038] The cleaning mechanism 11 includes a first shell 111, a first water inlet 112, a second water inlet 113, a water inlet pipe 114, a first water outlet 115, a second shell 116, an elastic rope 117, a second water outlet 118, an auxiliary mechanism 119, a first control valve 1110, a second control valve 1111, a water outlet pipe 1112, a third control valve 1113, a sliding groove 1114 and a sliding block 1115. The first shell 111 is composed of a semicircular ring component. The first water inlet 112 is provided on the right outer surface of the first shell 111 near the upper edge. 12, the liquid outlet end 9 is provided with a second water inlet 113 at a position corresponding to the first water inlet 112, one end of the second water inlet 113 is connected to the first water inlet 112, one end of the second water inlet 113 is extended through the liquid outlet end 9 to the outside of the filter body 7, the top surface of the first shell 111 is connected to the evenly distributed water inlet pipe 114, the water inlet pipe 114 is connected to the first water inlet 112, the inner surface of the first shell 111 is provided with evenly distributed first water outlets 115, the interior of the first shell 111 is close to Two groups of second shells 116 are symmetrically connected on both sides of the first water inlet 112. Two sliding grooves 1114 are symmetrically opened on the left inner surface of the first shell 111 near the first water inlet 112. Sliding blocks 1115 are fixedly installed on the upper edge of the outer surface of one side of the two groups of second shells 116. The two groups of sliding grooves 1114 are slidably connected to the second shells 116 through the sliding blocks 1115. Elastic ropes 117 are evenly distributed and fixedly installed on the inner top surfaces of both sides of the first shell 111. One end of the elastic rope 117 is fixed to the second shell 116. The inner bottom surface is fixedly connected, and the inner surface of the second shell 116 is penetrated by a uniformly distributed second water outlet 118. An auxiliary mechanism 119 is provided on the inner surface of the liquid inlet end 8 near the right edge, and a first control valve 1110 is provided on the inner surface of the liquid inlet end 8 near the left side of the auxiliary mechanism 119. A second control valve 1111 is provided on the inner surface of the liquid outlet end 9 near the right side, and a water outlet pipe 1112 is penetrated and connected to the inner surface of the liquid outlet end 9 near the left side of the second control valve 1111, and a third control valve 1113 is provided inside the water outlet pipe 1112.

[0039] In the prior art, most hydraulic support filter bodies 7 must be shut down to replace the filter element 10 or remove the filter element 10 for cleaning when the filter element 10 is clogged by impurities, which is time-consuming and labor-intensive, affecting the efficiency of coal mining. The present invention sets a first shell 111. When the filter element 10 inside the filter body 7 is clogged by impurities and needs to be cleaned, first power is turned on to control the first control valve 1110 and the second control valve 1111 to be closed, and then power is turned on to control the third control valve 1113 to be opened. Then water starts to flow in through the second water inlet 113, and water enters the first water inlet 112 from the second water inlet 113. Since the first water outlet 115 and the second water outlet 118 are staggered, the first shell The first shell 111 and the second shell 116 are both provided with a cavity. When the first shell 111 and the second shell 116 are in the closed state, the first water outlet 115 and the second water outlet 118 are in a closed state. By setting the first shell 111 and the second shell 116 in the closed state, it is prevented that when the filter body 7 is working, the first shell 111 and the second shell 116 are in the open state, which will reduce the flow rate of the emulsion around the filter element 10. When water fills the first shell 111 in the closed state, the water is constantly added, and the impact force of the water flow overcomes the elastic force of the elastic rope 117. The first shell 111 and the second shell 116 are separated until the bottoms of the two sets of second shells 116 are in contact. Since water is constantly added, the added water has high pressure. Although the water pressure will be dispersed by the first water outlet 115 and the second water outlet 118 exposed when the first shell 111 and the second shell 116 are separated, the forward impact force of the water is still sufficient to separate the first shell 111 and the second shell 116. The bottoms of the two sets of second shells 116 are in contact and remain in an open state. Since one end of the filter element 10 is in an open state, the first shell 111 and the second shell 116 completely wrap the filter element 10 at this time, and water flows out from the first water outlet 115 and the second water outlet 118. The water outlet 118 flows out, and the pressurized water impacts and cleans the filter element 10. Since the filter element 10 is a pure metal hydraulic oil filter element 10 made of stainless steel, the impurities in the filter element can be washed clean under the impact of the water flow, and the cleaned waste water is discharged from the liquid outlet 14 through the outlet pipe 1112. When the cleaning is completed, the water supply is stopped, and the elastic force of the elastic rope 117 causes the first shell 111 and the second shell 116 to be closed again, which is convenient for next use. Therefore, when the filter element 10 is blocked by impurities, there is no need to stop the machine to replace the filter element 10 or take out the filter element 10 for cleaning, which saves labor costs, ensures coal mining efficiency, and improves overall practicality.

[0040] As a specific embodiment of the present invention, Figures 7 and 8As shown, the auxiliary mechanism 119 includes a mounting groove 1191, a connecting rod 1192 and a magnet 1193. Two groups of mounting grooves 1191 are symmetrically opened near the right edge on the inner surface of the liquid inlet end 8. Connecting rods 1192 are installed inside the two groups of mounting grooves 1191. The connecting rod 1192 is a T-shaped component. The magnet 1193 is rotatably connected between the two groups of connecting rods 1192.

[0041] During operation, metal impurities such as iron filings cannot be effectively intercepted and filtered. Due to the special shape of metal impurities, they often damage the filter screen under long-term high-pressure impact, thereby polluting the entire hydraulic system, resulting in large-scale maintenance and replacement of hydraulic components, and affecting the cleaning effect of the cleaning mechanism 11. The present invention sets a mounting groove 1191. When the emulsion enters the filter element 10 from the liquid inlet 13, the emulsion will first impact the magnet 1193. During the impact, the magnet 1193 can adsorb and clean the metal impurities inside the emulsion. By setting a connecting rod 1192 and rotatingly connecting with the magnet 1193, the magnet 1193 rotates during the impact of the emulsion, thereby ensuring that each side surface of the magnet 1193 can play an adsorption role, thereby effectively intercepting and filtering metal impurities such as iron filings, preventing the filter element 10 from being damaged, ensuring the overall normal operation of the filter body 7, and improving the overall practicality.

[0042] As a specific embodiment of the present invention, Figure 8 As shown, a support plate 1194 is slidably connected to the inside of the mounting groove 1191 near the left side of the connecting rod 1192 , and the sum of the lengths of the connecting rod 1192 and the support plate 1194 is equal to the length of the mounting groove 1191 .

[0043] During operation, the magnet 1193 will move inside the installation groove 1191 under the impact of the emulsion, affecting the effect of the magnet 1193 on adsorbing metal impurities such as iron filings. The present invention provides a stop plate 1194. When the stop plate 1194 is installed into the installation groove 1191, since the sum of the lengths of the connecting rod 1192 and the stop plate 1194 is equal to the length of the installation groove 1191, when the liquid inlet end 8 is installed into the filter body 7, the stop plate 1194 and the outer surface of the left end of the filter element 10 will conflict with each other. Therefore, after the installation is completed, the friction force between the filter element 10 and the stop plate 1194 is generated by the stop plate 1194. Plate 1194 is transferred to connecting rod 1192, and connecting rod 1192 is fixed inside the mounting groove 1191. When it is necessary to clean the iron filings and other metal impurities adsorbed on the magnet 1193, it is only necessary to remove the liquid inlet end 8 to cancel the resistance between the filter element 10 and the abutment plate 1194. At this time, the abutment plate 1194 can be removed to remove the connecting rod 1192, and the iron filings and other metal impurities adsorbed on the magnet 1193 can be cleaned, thereby fixing the magnet 1193 inside the mounting groove 1191, ensuring the effect of the magnet 1193 in adsorbing metal impurities such as iron filings, thereby improving the overall practicality.

[0044] As a specific embodiment of the present invention, Figure 6 As shown, the fixing mechanism 12 includes a first connecting groove 121, a fixing plate 122, a third water inlet 123, a threaded tube 124, a spring 125, a connecting block 126, a connecting column 127, a second connecting groove 128 and a rubber pad 129. The inner surface of the first connecting groove 121 is fixedly installed with the fixing plate 122 near the lower end. The middle position of the outer surface of the lower end of the fixing plate 122 is penetrated to form the third water inlet 123. The outer surface of the upper end of the fixing plate 122 is fixedly installed with the threaded tube 124 near the outer side of the third water inlet 123. 24. A connecting block 126 is fixedly installed on the outer surface of the upper end of the threaded tube 124. A spring 125 is fixedly installed on the outer surface of the upper end of the fixing plate 122 close to the outer surface of the threaded tube 124. The outer surface of the upper end of the spring 125 is fixedly connected to the connecting block 126. Evenly distributed connecting columns 127 are fixedly installed on the outer surfaces of both sides of the connecting block 126. A second connecting groove 128 is provided at a position corresponding to the first connecting groove 121 inside the filter body 7, and a rubber pad 129 is fixedly installed on the inner side of the second connecting groove 128.

[0045] During operation, although the filter body 7 can effectively increase the service life of various components of the hydraulic system, reduce maintenance and repair costs, and improve the efficiency of the bracket, the connection tightness between the liquid inlet end 8, the liquid outlet end 9 and the filter body 7 affects the working effect of the filter body 7. If the connection tightness between the liquid inlet end 8, the liquid outlet end 9 and the filter body 7 is too low, it will cause the emulsion to leak sideways, reduce the pressure of the emulsion, and affect the normal operation of hydraulic components such as the first hydraulic cylinder 2 and the second hydraulic cylinder 6. The present invention sets a first connecting groove 121. When the emulsion starts to be introduced after the liquid inlet end 8 is installed in the filter body 7, the first control valve 1110 is first powered on to close. At this time, the first connecting groove 121 with pressure enters, and then enters the threaded pipe through the third water inlet 123 set in the middle position of the fixed plate 122. 124, overcome the elastic force of spring 125 to push the connecting block 126 from the first connecting groove 121 into the second connecting groove 128, and the connecting column 127 squeezes the rubber pad 129, increasing the friction between the connecting block 126 and the second connecting groove 128, and cooperates with the squeezing force of the emulsion to fix the connecting block 126 inside the second connecting groove 128, fixing the liquid inlet end 8 and the filter body 7 together. When the emulsion is stopped, the squeezing of the emulsion on the connecting block 126 disappears, and the spring 125 returns to its original state. In the process of returning to its original state, the connecting block 126 is brought back to the first connecting groove 121, which is convenient for the next use of the fixing mechanism 12 or the disassembly between the liquid inlet end 8 and the filter body 7, thereby ensuring the tightness of the connection between the liquid inlet end 8, the liquid outlet end 9 and the filter body 7, ensuring the working effect of the filter body 7, and improving the overall practicality.

[0046] As a specific embodiment of the present invention, Figure 9 As shown, fixing blocks 1210 are fixedly installed on the outer surfaces of both sides of the filter element 10, a fixing block 1210 is fixedly installed on the left outer surface of the first shell 111, and fixing grooves 1211 are opened at positions inside the filter body 7 corresponding to the fixing blocks 1210.

[0047] During operation, the fixing block 1210 is raised. During installation, the filter element 10, the first housing 111, the liquid inlet end 8 and the liquid outlet end 9 are connected together through the fixing block 1210 and the fixing groove 1211. Thus, the filter element 10 and the first housing 111 are fixed between the liquid inlet end 8 and the liquid outlet end 9 by the extrusion force generated on the filter element 10 and the first housing 111 after the installation of the liquid inlet end 8 and the liquid outlet end 9. At the same time, when the filter element 10 or the first housing 111 needs to be disassembled , it is only necessary to stop delivering the emulsion so that the squeezing of the emulsion on the connecting block 126 disappears, remove the liquid inlet end 8 and the liquid outlet end 9, and cancel the squeezing force on the filter element 10 and the first shell 111 after the installation of the liquid inlet end 8 and the liquid outlet end 9. Then, the filter element 10 or the first shell 111 can be disassembled, thereby ensuring the degree of fixation of the filter element 10 and the first shell 111 after installation. At the same time, when the filter element 10 or the first shell 111 needs to be disassembled, it is convenient to disassemble, thereby improving the overall practicality.

[0048] As a specific embodiment of the present invention, Figure 2 As shown, the fixing block 1210 is an annular component, and the difference in width between the fixing groove 1211 and the fixing block 1210 is 1CM-2CM.

[0049] During operation, the present invention sets the fixing block 1210 as an annular component to ensure that after the fixing block 1210 and the fixing groove 1211 are installed, the filter element 10, the first shell 111 and the liquid inlet end 8, the liquid outlet end 9 are connected effectively, and the extrusion force generated on the filter element 10 and the first shell 111 after the installation of the liquid inlet end 8 and the liquid outlet end 9 is ensured. By setting the difference in width between the fixing groove 1211 and the fixing block 1210 to 1CM-2CM, it is ensured that when the filter element 10 or the first shell 111 needs to be disassembled, the fixing block 1210 can be well separated from the fixing groove 1211, thereby improving the overall practicality.

[0050] Working principle: When working, firstly, power is turned on to control the first control valve 1110 and the second control valve 1111 to be closed, and power is turned on to control the third control valve 1113 to be open, and then water starts to flow in through the second water inlet 113, and water enters the first water inlet 112 from the second water inlet 113. Since the first water outlet 115 and the second water outlet 118 are staggered, there are cavities inside the first shell 111 and the second shell 116. When the first shell 111 and the second shell 116 are in the closed state, the first water outlet 115 and the second water outlet 118 are in the closed state. When water fills the first shell 111 and the second shell 116, the first water outlet 115 and the second water outlet 118 are in the closed state. When the two shells 116 are inside the first shell 111 in the closed state, as water is constantly added, the impact force of the water flow overcomes the elastic force of the elastic rope 117 to separate the first shell 111 and the second shell 116 until the bottoms of the two sets of second shells 116 are in contact. At this time, the first shell 111 and the second shell 116 completely wrap the filter element 10, and water flows out from the first water outlet 115 and the second water outlet 118. The pressurized water impacts and cleans the filter element 10. Since the filter element 10 is a pure metal hydraulic oil filter element 10 made of stainless steel, the impurities in the filter element can be washed away under the impact of the water flow. The clean, cleaned waste water is discharged from the liquid outlet 14 through the water outlet pipe 1112. When the cleaning is completed, the water inlet is stopped, and the elastic force of the elastic rope 117 makes the first shell 111 and the second shell 116 close again, which is convenient for the next use. When the emulsion is introduced after the liquid inlet end 8 is installed into the filter body 7, the first control valve 1110 is first powered on to control the closure. At this time, the first connecting groove 121 with pressure is entered, and then the third water inlet 123 set in the middle position of the fixing plate 122 enters the threaded pipe 124, overcoming the elastic force of the spring 125 to push the connecting block 126 from the first connecting groove 1 21 enters the second connecting groove 128, and the connecting column 127 squeezes the rubber pad 129, increasing the friction between the connecting block 126 and the second connecting groove 128, and cooperates with the squeezing force of the emulsion to fix the connecting block 126 inside the second connecting groove 128, fixing the liquid inlet end 8 and the filter body 7 together. When the emulsion is stopped, the squeezing of the emulsion on the connecting block 126 disappears, and the spring 125 returns to its original state. In the process of returning to its original state, the connecting block 126 is brought back to the first connecting groove 121, which is convenient for the next use of the fixing mechanism 12 or the disassembly between the liquid inlet end 8 and the filter body 7.

[0051] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the purpose of this technical solution based on the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more compatible with and in line with the technical solution of the present invention. It is a technical solution for the best application of this technical solution. The model of its product can be replaced and modified according to the technical parameters required. It is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic support for coal mines, comprising a base (1), characterized in that: The outer surface of the upper end of the base (1) is fixedly mounted with uniformly distributed first hydraulic cylinders (2) near the left edge position, the outer surface of the left end of the first hydraulic cylinder (2) is fixedly mounted with a connecting beam (3), the outer surface of the upper end of the connecting beam (3) is movably connected with a fixed beam (4), the right outer surface of the fixed beam (4) is provided with a telescopic beam (5), the outer surface of the lower end of the fixed beam (4) is fixedly mounted with uniformly distributed second hydraulic cylinders (6), the lower end of the second hydraulic cylinder (6) is provided with a filter body (7), the outer surface of the lower end of the filter body (7) is fixedly connected to the base (1), and the inner surface of the filter body (7) is near the left edge position. A liquid inlet end (8) is fixedly connected, a liquid outlet end (9) is fixedly installed on the inner surface of the filter body (7) near the right edge, a filter core (10) is provided inside the filter body (7), a cleaning mechanism (11) is provided on the outer side of the annular outer surface of the filter body (7) near the filter core (10), and the annular outer surfaces of the liquid inlet end (8) and the liquid outlet end (9) in contact with the filter body (7) are both provided with evenly distributed fixing mechanisms (12), a liquid inlet (13) is provided through the middle position of the left outer surface of the liquid inlet end (8), and a liquid outlet (14) is provided through the middle position of the right outer surface of the liquid outlet end (9); The cleaning mechanism (11) comprises a first shell (111), a first water inlet (112), a second water inlet (113), a water inlet pipe (114), a first water outlet (115), a second shell (116), an elastic rope (117), a second water outlet (118), an auxiliary mechanism (119), a first control valve (1110), a second control valve (1111), a water outlet pipe (1112), a third control valve (1113), a sliding groove (1114) and a sliding block (1115). The first shell (111) is composed of a semicircular ring component. A second opening is provided on the right outer surface of the first shell (111) near the upper edge. A water inlet (112), a second water inlet (113) is provided at a position corresponding to the liquid outlet end (9) and the first water inlet (112), one end of the second water inlet (113) is connected to the first water inlet (112), one end of the second water inlet (113) is extended through the liquid outlet end (9) to the outside of the filter body (7), the top surface of the first shell (111) is connected to a water inlet pipe (114) evenly distributed, the water inlet pipe (114) is connected to the first water inlet (112), the inner surface of the first shell (111) is provided with first water outlets (115) evenly distributed, the first shell (111) is provided with a first water outlet (115) evenly distributed, ) is symmetrically connected to two sets of second shells (116) on both sides near the first water inlet (112), and two sliding grooves (1114) are symmetrically opened on both sides of the left inner surface of the first shell (111) near the first water inlet (112). Sliding blocks (1115) are fixedly installed on the upper edge of the outer surface of one side of the two sets of second shells (116). Both sets of sliding grooves (1114) are slidably connected to the second shells (116) through the sliding blocks (1115). Elastic ropes (117) are evenly distributed and fixedly installed on the inner top surfaces of both sides of the first shell (111). One end of the elastic rope (117) is fixed to the second shell (111). 6), the inner bottom surface of the second shell (116) is fixedly connected, the inner surface of the second shell (116) is penetrated and provided with uniformly distributed second water outlets (118), the inner surface of the liquid inlet end (8) is provided with an auxiliary mechanism (119) near the right edge position, the inner surface of the liquid inlet end (8) is provided with a first control valve (1110) near the left side of the auxiliary mechanism (119), the inner surface of the liquid outlet end (9) is provided with a second control valve (1111) near the right side, the inner surface of the liquid outlet end (9) is provided with a water outlet pipe (1112) near the left side of the second control valve (1111), and the inner surface of the liquid outlet end (9) is penetrated and connected with a water outlet pipe (1112), and a third control valve (1113) is provided inside the water outlet pipe (1112).

2. The hydraulic support for coal mines according to claim 1, characterized in that: The auxiliary mechanism (119) includes a mounting groove (1191), a connecting rod (1192) and a magnet (1193). Two groups of mounting grooves (1191) are symmetrically provided on the inner surface of the liquid inlet end (8) near the right edge. Connecting rods (1192) are installed inside the two groups of mounting grooves (1191). The connecting rods (1192) are T-shaped components. The magnet (1193) is rotatably connected between the two groups of connecting rods (1192).

3. The hydraulic support for coal mines according to claim 2, characterized in that: The inside of the installation groove (1191) is slidably connected to a support plate (1194) near the left side of the connecting rod (1192), and the sum of the lengths of the connecting rod (1192) and the support plate (1194) is equal to the length of the installation groove (1191).

4. The hydraulic support for coal mines according to claim 1, characterized in that: The fixing mechanism (12) comprises a first connecting groove (121), a fixing plate (122), a third water inlet (123), a threaded pipe (124), a spring (125), a connecting block (126), a connecting column (127), a second connecting groove (128) and a rubber pad (129); the fixing plate (122) is fixedly mounted on the inner surface of the first connecting groove (121) near the lower end; the third water inlet (123) is provided through the middle position of the outer surface of the lower end of the fixing plate (122); the threaded pipe (124) is fixedly mounted on the outer surface of the upper end of the fixing plate (122) near the outer side of the third water inlet (123); 24), a connecting block (126) is fixedly installed on the outer surface of the upper end of the threaded tube (124), a spring (125) is fixedly installed on the outer surface of the upper end of the fixing plate (122) close to the outer surface of the threaded tube (124), the outer surface of the upper end of the spring (125) is fixedly connected to the connecting block (126), and evenly distributed connecting columns (127) are fixedly installed on the outer surfaces of both sides of the connecting block (126), a second connecting groove (128) is opened at a position corresponding to the first connecting groove (121) inside the filter body (7), and a rubber pad (129) is fixedly installed on the inner side of the second connecting groove (128).

5. The hydraulic support for coal mines according to claim 4, characterized in that: Fixed blocks (1210) are fixedly mounted on both outer surfaces of the filter element (10), a fixed block (1210) is fixedly mounted on the left outer surface of the first shell (111), and fixed grooves (1211) are provided at positions inside the filter body (7) corresponding to the fixed blocks (1210).

6. The hydraulic support for coal mines according to claim 5, characterized in that: The fixing block (1210) is an annular component, and the difference in width between the fixing groove (1211) and the fixing block (1210) is 1CM-2CM.

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