Filtering device and hydraulic support underground mounting system

Abstract

The utility model provides a filtering device and a hydraulic support underground installation system, the filtering device is used for installing a hydraulic support, the hydraulic support comprises a hydraulic system, the hydraulic system comprises a liquid inlet end, the filtering device comprises a filtering assembly, the filtering assembly comprises a liquid inlet and a liquid outlet, the liquid inlet is communicated with a pumping device, and the liquid outlet is communicated with the liquid inlet end. When the hydraulic support is installed for the first time, the filtering assembly is arranged between the pumping device and the liquid inlet end to filter liquid pumped by the pumping device, that is, impurities in the liquid are filtered before the liquid enters the liquid inlet end of the hydraulic system, the cleanliness of the liquid flowing out of the pumping device is improved, and the reliability of the hydraulic support is improved. Even if the pumping device is an uneven temporary pump station, the situation that a hydraulic system is polluted can be reduced in the primary installation process of the hydraulic support, then the fault rate of the whole system is reduced, and stable production of a fully mechanized coal mining face of a coal mine is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic supports, in particular to a filtering device and a hydraulic support underground installation system. Background Art

[0002] When the hydraulic support of the coal mine comprehensive mining working face is lowered into the mine for the first time, due to reasons such as support transportation, the support hydraulic system pump station is installed later than the support in the initial stage of installation. Therefore, a temporary pump station is often used for the initial installation of the underground support when the support is lowered into the mine for the first time.

[0003] However, due to the uneven quality of temporary pump stations used by the installation team of the hydraulic support, the hydraulic system of the hydraulic support is prone to contamination during the installation process, which in turn leads to an increase in the failure rate of the entire hydraulic system and even affects production. Utility Model Content

[0004] The embodiments of the utility model are intended to solve at least one of the technical problems existing in the prior art.

[0005] To this end, a first aspect of an embodiment of the utility model provides a filtering device.

[0006] A second aspect of the embodiments of the utility model provides a hydraulic support underground installation system.

[0007] In view of this, according to the first aspect of an embodiment of the utility model, a filtering device is provided, which is used to install a hydraulic support, the hydraulic support includes a hydraulic system, the hydraulic system includes a liquid inlet end, and the filtering device includes: a filtering component, the filtering component includes a liquid inlet and a liquid outlet, the liquid inlet is connected to a pumping device, and the liquid outlet is connected to the liquid inlet end.

[0008] The filtering device provided in the embodiment of the utility model includes a filtering assembly. Specifically, the hydraulic support includes a hydraulic system. It can be understood that when the hydraulic support of the coal mine comprehensive mining working face is lowered into the mine for the first time, the hydraulic support needs to be installed and power is provided by the hydraulic system to put the hydraulic support in a supporting state.

[0009] Due to reasons such as the transportation of hydraulic supports, the installation of the hydraulic system pump station is generally later than the hydraulic support in the initial installation stage. Therefore, when the hydraulic support is first lowered into the well, a temporary pump station is often used for the initial installation of the hydraulic support, resulting in contamination of the hydraulic system of the hydraulic support during the installation process.

[0010] The filter assembly includes a liquid inlet and a liquid outlet. The liquid inlet is connected to the pumping device, and the liquid outlet is connected to the liquid inlet end of the hydraulic system. It can be understood that when the pumping device is in working state, the liquid flows through the pumping device and enters the filter assembly through the liquid inlet. After being filtered by the filter assembly, it flows out through the liquid outlet and enters the liquid inlet end of the hydraulic system.

[0011] That is to say, when the hydraulic support is initially installed, a filtering assembly is arranged between the pumping device and the liquid inlet end to filter the liquid pumped by the pumping device. That is, before the liquid enters the liquid inlet end of the hydraulic system, the impurities in the liquid are filtered to improve the cleanliness of the liquid flowing out of the pumping device. Even if the pumping device is a temporary pumping station of varying quality, it can reduce the contamination of the hydraulic system during the initial installation of the hydraulic support, thereby reducing the failure rate of the entire system and ensuring the stable production of the coal mine comprehensive mining working face.

[0012] Optionally, the pumping device includes a liquid storage tank and a pump body. It can be understood that the liquid storage tank can store part of the liquid, and when the pump body is in a working state, the liquid enters the filter assembly through the liquid inlet.

[0013] Optionally, the pumping device is connected to the liquid, and when the pumping device is in working state, the liquid flows through the pumping device and enters the filter assembly through the liquid inlet.

[0014] In addition, the filtering device provided by the above technical solution of the utility model also has the following additional technical features:

[0015] In some technical solutions, optionally, the filter assembly includes a first filter element and a second filter element, wherein the first filter element is provided with a liquid inlet, the second filter element is provided between the first filter element and the liquid inlet end and is connected to the first filter element, and the second filter element is provided with a liquid outlet.

[0016] In this technical solution, it is defined that the filter assembly includes a first filter element and a second filter element. Specifically, the second filter element is located between the first filter element and the liquid inlet end, and the first filter element is provided with a liquid inlet, and the second filter element is provided with a liquid outlet. In other words, two-stage filtration is performed along the direction of liquid flow, wherein the first filter element is a primary filter and the second filter element is a secondary filter, so that impurities in the liquid can be filtered multiple times to ensure the cleanliness of the liquid before entering the hydraulic system. Even if the pumping device is a temporary pump station of varying quality, it can further reduce the contamination of the hydraulic system during the initial installation of the hydraulic support.

[0017] Optionally, the first filter element comprises a high pressure backwash filter.

[0018] In some technical solutions, optionally, the first filter element is closer to the pumping device than the second filter element; and the second filter element is closer to the hydraulic support than the first filter element.

[0019] In this technical solution, it is defined that the first filter element is disposed close to the pumping device, and the second filter element is disposed close to the hydraulic support.

[0020] It is understandable that the first filter element is generally a high-pressure backwash filter, which is generally large in size and inconvenient to carry. Therefore, the first filter element is installed close to the pumping device. When the hydraulic support is initially installed, the liquid entering the hydraulic system is filtered by carrying and installing the second filter element with a lighter weight. This can reduce the pollution problem in the hydraulic system and improve the installation efficiency of the hydraulic support.

[0021] In some technical solutions, optionally, the second filter element includes a first filter part and a second filter part, wherein the first filter part is provided with a liquid outlet, and the second filter part is provided between the first filter element and the first filter part, and is connected to the first filter element and the first filter part.

[0022] In this technical solution, it is defined that the second filter element includes a first filter portion and a second filter portion. Specifically, the second filter portion is located between the first filter element and the first filter portion, and the first filter portion is provided with a liquid outlet. That is to say, the liquid flowing out of the pumping device flows through the first filter element, the second filter portion and the first filter portion in sequence, and enters the hydraulic system through the liquid inlet end, that is, the liquid is filtered three times along the flow direction of the liquid, thereby improving the accuracy of liquid filtration, and then improving the cleanliness of the liquid entering the hydraulic system, further reducing the situation where the entire system fails due to contamination of the hydraulic system, and ensuring the stable production of the coal mine comprehensive mining working face.

[0023] Optionally, the first filter unit includes a tube filter.

[0024] Optionally, the second filter unit includes a cartridge filter, and specifically, the cartridge filter is a high-pressure cartridge filter.

[0025] In some technical solutions, optionally, at least a portion of the first filter portion can be inserted into or removed from the liquid inlet end.

[0026] In this technical solution, at least a portion of the first filter portion can be inserted into or removed from the liquid inlet end, that is, when installing the hydraulic support, at least a portion of the first filter portion can be inserted into the liquid inlet end to filter the liquid again at the liquid inlet end of the hydraulic system, thereby improving the filtering accuracy of the liquid, preventing contamination of the hydraulic system, and reducing the failure rate of the hydraulic system.

[0027] When the hydraulic support is in a supporting state through the hydraulic system, the first filter part can be moved out of the liquid inlet end to install the next hydraulic support. That is to say, only one first filter part is needed to achieve filtering of multiple hydraulic supports during the initial installation, reducing the production cost of the filtering device.

[0028] In some technical solutions, optionally, the filtering device also includes a first pipeline and a second pipeline, wherein the first filter element is connected to the second filter part through the first pipeline, and the first filter part is connected to the second filter part through the second pipeline; wherein the diameter of the first pipeline is larger than the diameter of the second pipeline.

[0029] In this technical solution, it is defined that the filter device also includes a first pipeline and a second pipeline. Specifically, the first filter element is connected to the second filter part through the first pipeline. It can be understood that the first filter element is close to the pumping device and the second filter part is close to the hydraulic support. In other words, the first pipeline is a long pipeline. The first filter element and the second filter part are respectively arranged at both ends of the first pipeline to filter the liquid, so as to ensure the cleanliness of the liquid when it is transported over a long distance in the pipeline, and then ensure the cleanliness of the liquid entering the hydraulic system, prevent the hydraulic system from being contaminated, and ensure the cleanliness of the hydraulic support when it is first installed.

[0030] The first filter part and the second filter part are connected through the second pipeline. It can be understood that the first filter part and the second filter part are arranged close to the hydraulic support. By making the diameter of the first pipeline larger than the diameter of the second pipeline, that is, setting the diameter of the first pipeline larger and the diameter of the second pipeline smaller, the first pipeline can realize long-distance liquid transportation while ensuring the flow rate of the liquid, and the second pipeline is matched with the liquid inlet end of the hydraulic system, thereby realizing the effective filtering of the liquid entering the hydraulic system by the filter assembly to ensure the cleanliness of the liquid.

[0031] Optionally, a drift is generally provided underground, and the first pipeline can be provided in the drift.

[0032] In some technical solutions, optionally, the filter device further comprises a third filter element, the third filter element comprises an inlet and an outlet, the inlet is connected to the liquid, and the outlet is connected to the pumping device.

[0033] In this technical solution, it is defined that the filtering device also includes a third filter element. Specifically, the third filter element includes an inlet and an outlet, wherein the inlet is connected to the liquid, and the outlet is connected to the pumping device. That is to say, the third filter element is arranged between the pumping device and the liquid source, so as to filter the liquid entering the pumping device, thereby solving the problem of contamination of the hydraulic system by pollutants at the source of the liquid, ensuring the normal operation of the hydraulic system, and reducing the failure rate of the hydraulic system.

[0034] Optionally, the third filter element comprises a water inlet filter.

[0035] In some technical solutions, optionally, the filter device further includes a mounting member, the mounting member is provided with a mounting cavity, and at least a portion of the filter assembly is detachably disposed in the mounting cavity.

[0036] In this technical solution, it is defined that the filtering device also includes a mounting member. Specifically, the mounting member is provided with a mounting cavity, and at least a portion of the filtering component is detachably arranged in the mounting cavity. It can be understood that when the hydraulic support is initially installed, the filtering component can be brought into the well as a whole through the mounting member, even if the filtering device is modularized, so that when the hydraulic support is installed, the filtering device can be lowered into the well as a whole, further improving the installation efficiency of the hydraulic support.

[0037] In addition, at least a portion of the filter assembly is removable. After the filter device is lowered into the well as a whole, a portion of the filter assembly, for example, the second filter element, can be removed from the installation cavity and moved to the vicinity of the hydraulic support for installation. This can improve the cleanliness of the liquid while achieving long-distance transportation of the liquid to the hydraulic system in the pipeline.

[0038] In some technical solutions, optionally, the second filter element is detachably disposed in the installation cavity.

[0039] In this technical solution, it is defined that the second filter element is detachably arranged in the installation cavity. It can be understood that the second filter element is generally arranged close to the hydraulic support. The first filter element generally includes a high-pressure backwash filter, which is generally large in size and inconvenient to carry. When the hydraulic support is initially installed, the first filter element and the installation element are near the pumping device. The second filter element is removed from the installation cavity. By carrying and installing the second filter element with a lighter weight, the liquid entering the hydraulic system is filtered, which can reduce the pollution problem of the hydraulic system while improving the installation efficiency and convenience of the hydraulic support.

[0040] In some technical solutions, optionally, the mounting member includes a main body and a protective cover, wherein the protective cover is disposed on the top of the main body and encloses the main body to form a mounting cavity.

[0041] In this technical solution, it is defined that the mounting component includes a body and a protective cover. Specifically, the protective cover is arranged on the top of the body, and the protective cover and the body are enclosed to form a mounting cavity.

[0042] By setting a protective cover on the top of the main body, the filter assembly in the installation cavity can be protected to prevent the filter assembly from being damaged due to the harsh downhole environment, thereby ensuring the service life of the filter assembly and ensuring effective filtration of the liquid entering the hydraulic system.

[0043] According to the second aspect of the utility model, a hydraulic support underground installation system is provided, including a filtering device as provided by any of the above technical solutions, and thus has all the beneficial technical effects of the filtering device, which will not be repeated here.

[0044] Additional aspects and advantages of the present invention will be given in the following description, and some will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0046] Figure 1 One of the structural schematic diagrams of a filtering device according to an embodiment of the utility model is shown;

[0047] Figure 2 A second structural schematic diagram of a filtering device according to an embodiment of the utility model is shown;

[0048] Figure 3 A schematic block diagram of a hydraulic support underground installation system according to an embodiment of the utility model is shown.

[0049] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names is as follows:

[0050] 100 filtering device, 110 filtering assembly, 111 liquid inlet, 112 liquid outlet, 113 first filtering element, 114 second filtering element, 1141 first filtering portion, 1142 second filtering portion, 120 first pipeline, 130 second pipeline, 140 third filtering element, 141 inlet, 142 outlet, 150 mounting element, 151 mounting cavity, 152 body, 153 protective cover, 200 hydraulic support downhole installation system, 210 pumping device, 300 hydraulic system, 310 liquid inlet end, 400 liquid. DETAILED DESCRIPTION

[0051] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0052] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0053] Refer to the following Figures 1 to 3 The filtering device 100 and the hydraulic support downhole installation system 200 provided according to some embodiments of the present invention are described.

[0054] In one embodiment according to the present application, Figure 1 , Figure 2 and Figure 3 As shown, a filtering device 100 is proposed, and the filtering device 100 is used to install a hydraulic support. The hydraulic support includes a hydraulic system 300, and the hydraulic system 300 includes a liquid inlet end 310. The filtering device 100 includes: a filtering component 110, and the filtering component 110 includes a liquid inlet 111 and a liquid outlet 112. The liquid inlet 111 is connected to the pumping device 210, and the liquid outlet 112 is connected to the liquid inlet end 310.

[0055] The filtering device 100 provided in the embodiment of the utility model includes a filtering assembly 110. Specifically, the hydraulic support includes a hydraulic system 300. It can be understood that when the hydraulic support of the coal mine comprehensive mining working face is lowered into the well for the first time, the hydraulic support needs to be installed, and power is provided by the hydraulic system 300 to put the hydraulic support in a supporting state.

[0056] Due to reasons such as the transportation of the hydraulic support, in the initial stage of installation, the installation of the hydraulic system pump station is generally later than the hydraulic support. Therefore, when the hydraulic support is first lowered into the well, a temporary pump station is often used for the initial installation of the hydraulic support, resulting in contamination of the hydraulic system 300 of the hydraulic support during the installation process.

[0057] The filter assembly 110 includes a liquid inlet 111 and a liquid outlet 112. The liquid inlet 111 is connected to the pumping device 210, and the liquid outlet 112 is connected to the liquid inlet end 310 of the hydraulic system 300. It can be understood that when the pumping device 210 is in working state, the liquid 400 flows through the pumping device 210 and enters the filter assembly 110 through the liquid inlet 111. After being filtered by the filter assembly 110, it flows out through the liquid outlet 112 and enters the liquid inlet end 310 of the hydraulic system 300.

[0058] That is to say, when the hydraulic support is initially installed, a filter assembly 110 is arranged between the pumping device 210 and the liquid inlet end 310 to filter the liquid 400 pumped by the pumping device 210, that is, before the liquid 400 enters the liquid inlet end 310 of the hydraulic system 300, the impurities in the liquid 400 are filtered to improve the cleanliness of the liquid 400 flowing out of the pumping device 210. Even if the pumping device 210 is a temporary pumping station of varying quality, it can reduce the contamination of the hydraulic system 300 during the initial installation of the hydraulic support, thereby reducing the failure rate of the entire system and ensuring the stable production of the coal mine comprehensive mining working face.

[0059] Optionally, the pumping device 210 includes a liquid storage tank and a pump body. It is understandable that the liquid storage tank can store part of the liquid 400. When the pump body is in a working state, the liquid 400 enters the filter assembly 110 through the liquid inlet 111.

[0060] Optionally, the pumping device 210 is in communication with the liquid 400 . When the pumping device 210 is in operation, the liquid 400 flows through the pumping device 210 and enters the filter assembly 110 through the liquid inlet 111 .

[0061] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, optionally, the filter assembly 110 includes a first filter element 113 and a second filter element 114, wherein the first filter element 113 is provided with a liquid inlet 111, the second filter element 114 is provided between the first filter element 113 and the liquid inlet end 310 and is connected to the first filter element 113, and the second filter element 114 is provided with a liquid outlet 112.

[0062] In this embodiment, the filter assembly 110 is defined to include a first filter element 113 and a second filter element 114. Specifically, the second filter element 114 is located between the first filter element 113 and the liquid inlet end 310, and the first filter element 113 is provided with a liquid inlet 111, and the second filter element 114 is provided with a liquid outlet 112. In other words, two-stage filtration is performed along the flow direction of the liquid 400, wherein the first filter element 113 is a primary filtration and the second filter element 114 is a secondary filtration, so that the impurities in the liquid 400 can be filtered multiple times to ensure the cleanliness of the liquid 400 before entering the hydraulic system 300. Even if the pumping device 210 is a temporary pump station of varying quality, the contamination of the hydraulic system 300 can be further reduced during the initial installation of the hydraulic support.

[0063] Optionally, the first filter element 113 includes a high-pressure backwashing filter.

[0064] like Figure 3 As shown, in some embodiments, optionally, the first filter element 113 is closer to the pumping device 210 than the second filter element 114 ; the second filter element 114 is closer to the hydraulic support than the first filter element 113 .

[0065] In this embodiment, it is defined that the first filter element 113 is disposed close to the pumping device 210 , and the second filter element 114 is disposed close to the hydraulic support.

[0066] It is understandable that the first filter element 113 is generally a high-pressure backwash filter, which is generally large in size and inconvenient to carry. Therefore, the first filter element 113 is installed close to the pumping device 210. When the hydraulic support is initially installed, the liquid 400 entering the hydraulic system 300 is filtered by carrying and installing the second filter element 114, which is lighter in weight. This can reduce the pollution problem of the hydraulic system 300 and improve the installation efficiency of the hydraulic support.

[0067] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, optionally, the second filter element 114 includes a first filter portion 1141 and a second filter portion 1142, wherein the first filter portion 1141 is provided with a liquid outlet 112, and the second filter portion 1142 is provided between the first filter element 113 and the first filter portion 1141, and is connected to the first filter element 113 and the first filter portion 1141.

[0068] In this embodiment, it is defined that the second filter element 114 includes a first filter portion 1141 and a second filter portion 1142. Specifically, the second filter portion 1142 is located between the first filter element 113 and the first filter portion 1141, and the first filter portion 1141 is provided with a liquid outlet 112. That is to say, the liquid 400 flowing out of the pumping device 210 flows through the first filter element 113, the second filter portion 1142 and the first filter portion 1141 in sequence, and then enters the hydraulic system 300 through the liquid inlet end 310, that is, the liquid 400 is filtered three times along the flow direction of the liquid 400, thereby improving the filtering accuracy of the liquid 400, and then improving the cleanliness of the liquid 400 entering the hydraulic system 300, further reducing the situation where the entire system fails due to pollution of the hydraulic system 300, and ensuring the stable production of the coal mine comprehensive mining working face.

[0069] Optionally, the first filter unit 1141 includes a tube filter.

[0070] Optionally, the second filter unit 1142 includes a cartridge filter, specifically, the cartridge filter is a high-pressure cartridge filter.

[0071] In some embodiments, optionally, at least a portion of the first filter portion 1141 can be inserted into or removed from the liquid inlet end 310 .

[0072] In this embodiment, at least a portion of the first filter portion 1141 can be inserted into or removed from the liquid inlet end 310, that is, when installing the hydraulic support, at least a portion of the first filter portion 1141 can be inserted into the liquid inlet end 310 to filter the liquid 400 again at the liquid inlet end 310 of the hydraulic system 300, thereby improving the filtering accuracy of the liquid 400, preventing contamination of the hydraulic system 300, and reducing the failure rate of the hydraulic system 300.

[0073] When the hydraulic support is in a supporting state through the hydraulic system 300, the first filter part 1141 can be moved out of the liquid inlet end 310 to install the next hydraulic support. That is to say, only one first filter part 1141 is required to achieve filtering of multiple hydraulic supports during the initial installation, thereby reducing the production cost of the filter device 100.

[0074] like Figure 3As shown, in some embodiments, optionally, the filter device 100 also includes a first pipeline 120 and a second pipeline 130, wherein the first filter element 113 is connected to the second filter part 1142 through the first pipeline 120, and the first filter part 1141 is connected to the second filter part 1142 through the second pipeline 130; wherein the diameter of the first pipeline 120 is larger than the diameter of the second pipeline 130.

[0075] In this embodiment, the filter device 100 is defined to further include a first pipeline 120 and a second pipeline 130. Specifically, the first filter element 113 is connected to the second filter portion 1142 through the first pipeline 120. It can be understood that the first filter element 113 is close to the pumping device 210, and the second filter portion 1142 is close to the hydraulic support, that is, the first pipeline 120 is a long pipeline. The first filter element 113 and the second filter portion 1142 are respectively arranged at both ends of the first pipeline 120 to filter the liquid 400, so as to ensure the cleanliness of the liquid 400 when it is transported over a long distance in the pipeline, thereby ensuring the cleanliness of the liquid 400 entering the hydraulic system 300, preventing the hydraulic system 300 from being contaminated, and ensuring the cleanliness of the hydraulic support when it is first installed.

[0076] The first filter section 1141 and the second filter section 1142 are connected through the second pipeline 130. It can be understood that the first filter section 1141 and the second filter section 1142 are arranged close to the hydraulic support. By making the diameter of the first pipeline 120 larger than the diameter of the second pipeline 130, that is, setting the diameter of the first pipeline 120 to be larger and the diameter of the second pipeline 130 to be smaller, the first pipeline 120 can realize long-distance transportation of the liquid 400 while ensuring the flow rate of the liquid 400, and the second pipeline 130 matches the liquid inlet end 310 of the hydraulic system 300, thereby realizing the effective filtering of the liquid 400 entering the hydraulic system 300 by the filter assembly 110, thereby ensuring the cleanliness of the liquid 400.

[0077] Optionally, a drift is generally provided underground, and the first pipeline 120 can be provided in the drift.

[0078] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, optionally, the filter device 100 further includes a third filter element 140 , and the third filter element 140 includes an inlet 141 and an outlet 142 , the inlet 141 is connected to the liquid 400 , and the outlet 142 is connected to the pumping device 210 .

[0079] In this embodiment, it is defined that the filter device 100 also includes a third filter element 140. Specifically, the third filter element 140 includes an inlet 141 and an outlet 142, wherein the inlet 141 is connected to the liquid 400, and the outlet 142 is connected to the pumping device 210. That is to say, the third filter element 140 is arranged between the pumping device 210 and the source of the liquid 400, that is, the liquid 400 entering the pumping device 210 is filtered, thereby solving the problem of contamination of the hydraulic system 300 by pollutants at the source of the liquid 400, ensuring the normal operation of the hydraulic system 300, and reducing the failure rate of the hydraulic system 300.

[0080] Optionally, the third filter element 140 includes a water inlet filter.

[0081] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the filter device 100 further includes a mounting member 150 , and the mounting member 150 is provided with a mounting cavity 151 , and at least a portion of the filter assembly 110 is detachably disposed in the mounting cavity 151 .

[0082] In this embodiment, it is defined that the filter device 100 also includes a mounting member 150. Specifically, the mounting member 150 is provided with a mounting cavity 151. At least a portion of the filter assembly 110 is detachably disposed in the mounting cavity 151. It can be understood that when the hydraulic support is initially installed, the filter assembly 110 can be brought into the well as a whole through the mounting member 150. Even if the filter device 100 is modularized, when the hydraulic support is installed, the filter device 100 can be lowered into the well as a whole, thereby further improving the installation efficiency of the hydraulic support.

[0083] In addition, at least a portion of the filter assembly 110 is removable. After the filter device 100 is lowered into the well as a whole, a portion of the filter assembly 110, for example, the second filter element 114, can be removed from the installation cavity 151 and moved to the vicinity of the hydraulic support for installation. This can improve the cleanliness of the liquid 400 while achieving long-distance transportation of the liquid 400 to the hydraulic system 300 in the pipeline.

[0084] In some embodiments, optionally, the second filter element 114 is detachably disposed in the installation cavity 151 .

[0085] In this embodiment, it is defined that the second filter element 114 is detachably arranged in the installation cavity 151. It can be understood that the second filter element 114 is generally arranged close to the hydraulic support, and the first filter element 113 generally includes a high-pressure backwash filter, which is generally large in size and inconvenient to carry. When the hydraulic support is initially installed, the first filter element 113 and the installation element 150 are near the pumping device 210, and the second filter element 114 is removed from the installation cavity 151. By carrying and installing the second filter element 114 with a lighter weight, the liquid 400 entering the hydraulic system 300 is filtered, which can reduce the pollution problem of the hydraulic system 300 while improving the installation efficiency and convenience of the hydraulic support.

[0086] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the mounting member 150 includes a body 152 and a protective cover 153 , wherein the protective cover 153 is disposed on the top of the body 152 and encloses the body 152 to form a mounting cavity 151 .

[0087] In this embodiment, the mounting member 150 is defined to include a body 152 and a protective cover 153 . Specifically, the protective cover 153 is disposed on the top of the body 152 , and the protective cover 153 and the body 152 are enclosed to form a mounting cavity 151 .

[0088] By setting a protective cover 153 on the top of the main body 152, the filter assembly 110 in the installation cavity 151 can be protected to prevent the filter assembly 110 from being damaged due to the harsh downhole environment, thereby ensuring the service life of the filter assembly 110 and further ensuring effective filtration of the liquid 400 entering the hydraulic system 300.

[0089] According to the second aspect of the utility model, a hydraulic support underground installation system 200 is provided, including a filtering device 100 as provided in any of the above embodiments, and thus has all the beneficial technical effects of the filtering device 100, which will not be repeated here.

[0090] Furthermore, the hydraulic support downhole installation system 200 further includes a pumping device 210. It can be understood that the hydraulic support downhole installation system 200 is used to install the hydraulic support.

[0091] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0092] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0093] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A filtering device, characterized in that: The filtering device is used to install a hydraulic support, the hydraulic support includes a hydraulic system, the hydraulic system includes a liquid inlet end, and the filtering device includes: The filter assembly comprises a liquid inlet and a liquid outlet, wherein the liquid inlet is connected to a pumping device, and the liquid outlet is connected to the liquid inlet end.

2. The filtering device according to claim 1, characterized in that: The filter assembly comprises: a first filter element, wherein the first filter element is provided with the liquid inlet; The second filter element is arranged between the first filter element and the liquid inlet end and is communicated with the first filter element. The second filter element is provided with the liquid outlet.

3. The filtering device according to claim 2, characterized in that: The first filter element is closer to the pumping device than the second filter element; The second filter element is closer to the hydraulic support than the first filter element.

4. The filtering device according to claim 2, characterized in that: The second filter element comprises: a first filter portion, wherein the first filter portion is provided with the liquid outlet; The second filter portion is disposed between the first filter element and the first filter portion, and is communicated with the first filter element and the first filter portion.

5. The filtering device according to claim 4, characterized in that: At least a portion of the first filter portion can be inserted into or removed from the liquid inlet end.

6. The filtering device according to claim 4, characterized in that: The filtering device also includes: a first pipeline, the first filter element and the second filter part are connected through the first pipeline; a second pipeline, the first filter part and the second filter part are connected through the second pipeline; Wherein, the diameter of the first pipeline is larger than the diameter of the second pipeline.

7. The filtering device according to any one of claims 1 to 6, characterized in that: The filtering device also includes: The third filter element comprises an inlet and an outlet, wherein the inlet is in communication with the liquid and the outlet is in communication with the pumping device.

8. The filtering device according to any one of claims 2 to 6, characterized in that: The filtering device also includes: The mounting member is provided with a mounting cavity, and at least a part of the filter assembly is detachably disposed in the mounting cavity.

9. The filtering device according to claim 8, characterized in that: The second filter element is detachably arranged in the installation cavity.

10. The filtering device according to claim 8, characterized in that: The mounting member comprises: ontology; The protective cover is arranged on the top of the main body and is surrounded by the main body to form the installation cavity.

11. A hydraulic support underground installation system, characterized in that: The invention comprises the filtering device according to any one of claims 1 to 10.

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