Backwash filter protection device and backwash filter assembly

Abstract

The utility model relates to a backwash filter protection device and a backwash filter assembly, the backwash filter protection device is used for a backwash filter of a hydraulic support of an underground coal mining working face of a coal mine, the backwash filter protection device comprises a shell and a buffer part, the bottom of the shell is used for being supported on the support for installing the backwash filter, and a cavity is formed in the shell; an opening allowing the backwashing filter to enter the cavity is formed in the bottom of the shell, a pipeline receding opening and a wire harness receding opening are formed in the side portion of the shell, the pipeline receding opening is used for receding a pipeline of the backwashing filter, and the wire harness receding opening is used for receding a wire harness of the backwashing filter; the top end of the pipeline avoiding opening and the top end of the wire harness avoiding opening are both closed ends, and the bottom end of the pipeline avoiding opening and the bottom end of the wire harness avoiding opening are both open ends. The buffer part is located on the outer side of the shell and installed at the top of the shell, and the buffer part is used for buffering the impact force of falling coal briquettes on the shell.

Description

Technical Field

[0001] The present disclosure relates to the technical field of backwash filters for coal mines, and in particular to a backwash filter protection device and a backwash filter assembly. Background Art

[0002] In underground coal mine operations, coal mining machines and workers mainly move in the space within the coal mining face. The coal mining face includes tunnels for coal mining machines and workers to pass through. Hydraulic supports are installed in the tunnels to support the top surface of the tunnel and the mountain above, so as to prevent the mine above the coal mining face from collapsing. Protective nets are installed on the top and sides of the tunnel to prevent coal blocks from falling off the inner wall of the tunnel.

[0003] In order to ensure the normal operation of the hydraulic support, an automatic backwashing device is required to clean the pipeline filter screen to ensure the action sensitivity of the hydraulic support. In the related art, the backwashing filter is directly installed on the hydraulic support, and the backwashing filter is directly exposed to the outside. When the protective net is not in place, the coal blocks will fall and damage the solenoid valve of the backwashing filter, affecting the normal operation of the backwashing filter. Utility Model Content

[0004] The purpose of the present disclosure is to provide a backwash filter protection device and a backwash filter assembly to solve the above technical problems.

[0005] In order to achieve the above-mentioned purpose, as a first aspect of the present disclosure, the present disclosure provides a backwash filter protection device for a backwash filter of a hydraulic support of a coal mining face in an underground coal mine, comprising:

[0006] A shell, the bottom of which is used to be supported on a bracket for mounting the backwash filter, a cavity is formed inside the shell, an opening is formed at the bottom of the shell for allowing the backwash filter to enter the cavity, a pipe avoidance port and a harness avoidance port are formed on the side of the shell, the pipe avoidance port is used to avoid the pipe of the backwash filter, the harness avoidance port is used to avoid the harness of the backwash filter, the top of the pipe avoidance port and the top of the harness avoidance port are both closed ends, and the bottom of the pipe avoidance port and the bottom of the harness avoidance port are both open ends;

[0007] A buffer is located outside the shell and installed on the top of the shell. The buffer is used to buffer the impact force of the falling coal blocks on the shell.

[0008] Optionally, the buffer member includes a metal protective net, and the backwash filter protection device also includes a plurality of support rods, each of which extends in an up-down direction, the lower end of each support rod is connected to the top of the shell, and the upper end of each support rod is connected to the edge of the metal protective net.

[0009] Optionally, the support rod includes a rod body and a connecting ring, the lower end of the rod body is connected to the top of the shell, the connecting ring is located at the upper end of the rod body, and the connecting ring is passed through the mesh opening of the metal protective net.

[0010] Optionally, the minimum distance between the metal protective net and the top surface of the shell is 2cm-3cm.

[0011] Optionally, the buffer member comprises an elastic buffer pad, and the elastic buffer pad covers the top surface of the shell.

[0012] Optionally, a plurality of reinforcing ribs are arranged on the inner surface of the top of the shell, and a side of the reinforcing rib close to the backwashing filter is arranged to have a gap with the backwashing filter.

[0013] Optionally, the pipe avoidance port includes a sewage outlet for avoiding the sewage outlet of the backwash filter, and the backwash filter protection device also includes a dust cover, the dust cover and the sewage outlet are located on the same side of the shell, the top of the dust cover is rotatably connected to the outer surface of the shell, and the dust cover is used to cover the pipe mouth of the sewage outlet.

[0014] Optionally, the backwash filter protection device also includes a rotating shaft, a rotating shaft mounting seat and a torsion spring, the rotating shaft mounting seat is connected to the outer surface of the shell, the rotating shaft is rotatably mounted on the rotating shaft mounting seat, the dust cover is fixed to the rotating shaft, the torsion spring is sleeved on the rotating shaft, the first torsion arm of the torsion spring is connected to the rotating shaft mounting seat, the second torsion arm of the torsion spring is connected to the rotating shaft, and the torsion spring is used to apply an elastic force to the dust cover to rotate it toward the pipe mouth close to the sewage pipe.

[0015] Optionally, the housing includes a top plate and a plurality of side plates surrounding the top plate, the top plate and the plurality of side plates together define the cavity, the pipe avoidance opening and the harness avoidance opening are formed on the side plates, and the buffer is mounted on the top plate;

[0016] The connection between the side plate and the top plate is connected by an arc transition, and the connection between two adjacent side plates is connected by an arc transition.

[0017] As a second aspect of the present disclosure, the present disclosure provides a backwash filter assembly, including a backwash filter and the above-mentioned backwash filter protection device, wherein the protection device cover is arranged on the outside of the backwash filter.

[0018] Through the above technical solution, since the shell can be covered on the outside of the backwash filter, when a coal block falls from a high place and hits the backwash filter, the buffer and the shell can block the coal block, thereby protecting the backwash filter from the impact damage of the coal block. Since a buffer is also installed on the top of the shell, the buffer can provide a buffer for the coal block when a large mass coal block hits the shell, thereby reducing the impact force of the coal block, avoiding large deformation of the shell and damaging the backwash filter located inside the shell, further protecting the backwash filter and increasing the service life of the backwash filter protection device.

[0019] In addition, since the bottom of the shell has an opening, and the shell is provided with a harness avoidance port and a pipe avoidance port with an open end, when installing the backwashing filter protection device, the shell can be moved from top to bottom, and the backwashing filter can enter the cavity of the shell through the opening, and at the same time, the harness and the pipe can enter the harness avoidance port and the pipe avoidance port through the open end of the harness avoidance port and the open end of the pipe avoidance port, so that the backwashing filter protection device cover is arranged outside the backwashing filter, and the backwashing filter protection device is supported on the bracket for installing the backwashing filter, and the installation of the backwashing filter protection device is completed. It can be seen that the installation process of the backwashing filter protection device provided by the present disclosure is simple and convenient, and the installation difficulty is low.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0022] Figure 1 is a three-dimensional diagram of a backwash filter protection device provided by an embodiment of the present disclosure, wherein the dust cover is in a closed state;

[0023] Figure 2 yes Figure 1 A magnified view of part A;

[0024] Figure 3 is a perspective view of a backwash filter protection device provided by an embodiment of the present disclosure (with Figure 1 different perspectives);

[0025] Figure 4 is a three-dimensional diagram of a backwash filter protection device provided by an embodiment of the present disclosure, wherein the dust cover is in an open state;

[0026] Figure 5 yes Figure 4 Enlarged view of part B.

[0027] Description of Reference Numerals

[0028] 100-backwash filter protection device; 1-housing; 11-opening; 12-pipe avoidance port; 121-drain outlet; 13-wiring harness avoidance port; 14-open end; 15-reinforcement rib; 16-top plate; 17-side plate; 2-buffer; 21-metal protective net; 3-support rod; 31-rod body; 32-connecting ring; 4-dust cover; 5-rotating shaft; 6-rotating shaft mounting seat; 7-torsion spring. DETAILED DESCRIPTION

[0029] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0030] In the present disclosure, unless otherwise stated, the directional words used, such as "upper" and "lower", are usually defined as the upper and lower parts of the backwash filter in the normal use state. This is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation structure and operation, and therefore cannot be understood as a limitation of the present disclosure. "Inside" and "outside" refer to the inside and outside of the contour of the corresponding component. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0032] As a first aspect of the present disclosure, Figures 1 to 5As shown, the present disclosure provides a backwash filter protection device 100, which is used for the backwash filter of the hydraulic support of the coal mining face in the coal mine. The backwash filter includes a shell 1 and a buffer 2. The bottom of the shell 1 is used to support the bracket for installing the backwash filter. A cavity is formed inside the shell 1. The bottom of the shell 1 is formed with an opening 11 for the backwash filter to enter the cavity. A pipe avoidance port 12 and a harness avoidance port 13 are formed on the side of the shell 1. The pipe avoidance port 12 is used to avoid the pipe of the backwash filter. The harness avoidance port 13 is used to avoid the harness of the backwash filter. The top of the pipe avoidance port 12 and the top of the harness avoidance port 13 are both closed ends, and the bottom of the pipe avoidance port 12 and the bottom of the harness avoidance port 13 are both open ends 14. The buffer 2 is located outside the shell 1 and is installed on the top of the shell 1. The buffer 2 is used to buffer the impact force of the falling coal block on the shell 1.

[0033] Through the above technical solution, since the shell 1 can be covered on the outside of the backwash filter, when a coal block falls from a high place and hits the backwash filter, the buffer 2 and the shell 1 can block the coal block, thereby protecting the backwash filter from the impact damage of the coal block. Since the buffer 2 is also installed on the top of the shell 1, the buffer 2 can provide a buffer for the coal block when a large mass coal block hits the shell 1, thereby reducing the impact force of the coal block, avoiding the shell 1 from being deformed too much and damaging the backwash filter located inside the shell 1, further protecting the backwash filter and improving the service life of the backwash filter protection device 100.

[0034] In addition, since the bottom of the housing 1 has an opening 11, and the housing 1 is provided with a harness avoidance port 13 and a pipe avoidance port 12 with an open end 14, when installing the backwashing filter protection device 100, the housing 1 can be moved from top to bottom, and the backwashing filter can enter the cavity of the housing 1 through the opening 11, and at the same time, the harness and the pipe can enter the harness avoidance port 13 and the pipe avoidance port 12 through the open end 14 of the harness avoidance port 13 and the open end 14 of the pipe avoidance port 12, so that the backwashing filter protection device 100 is covered outside the backwashing filter, and the backwashing filter protection device 100 is supported on the bracket for installing the backwashing filter, and the installation of the backwashing filter protection device 100 is completed. It can be seen that the backwashing filter protection device 100 provided by the present disclosure has a simple and convenient installation process and low installation difficulty.

[0035] In one embodiment provided by the present disclosure, Figure 1As shown, the buffer 2 may include a metal protective net 21, and the backwash filter protection device 100 also includes a plurality of support rods 3, each of which extends in the up-down direction, the lower end of each support rod 3 is connected to the top of the shell 1, and the upper end of each support rod 3 is connected to the edge of the metal protective net 21. Since the working environment of the backwash filter protection device 100 is located in the coal mining tunnel, the fallen coal blocks are of large mass and high hardness, and the use of the metal protective net 21 as the buffer 2 can increase the service life of the protective net. At the same time, the support rods 3 are used to connect the metal protective net 21 and the shell 1, and a certain gap can be reserved between the metal protective net 21 and the shell 1, leaving the metal protective net 21 as a deformation buffer area to prevent the metal protective net 21 from directly hitting the shell 1 due to insufficient buffering gap when the impact force of the coal block is large.

[0036] In order to connect the support rod 3 and the metal protection net 21, optionally, as Figure 2 As shown, the support rod 3 includes a rod body 31 and a connecting ring 32, the lower end of the rod body 31 is connected to the top of the shell 1, the connecting ring 32 is located at the upper end of the rod body 31, and the connecting ring 32 is inserted into the mesh opening of the metal protection net 21. The rod body 31 can support the metal protection net 21 at a certain distance from the shell 1, and while connecting the metal protection net 21 and the shell 1, the metal protection net 21 has a certain buffer gap.

[0037] The present disclosure does not limit the connection method between the mesh opening of the metal protective net 21 and the connecting ring 32. In one embodiment provided in the present disclosure, a gap can be formed on the connecting ring 32 for the metal wire of the metal protective net 21 to pass through, so that the mesh opening of the metal protective net 21 can be inserted into the connecting ring 32.

[0038] In another embodiment provided in the present disclosure, the metal protection mesh 21 may also be integrally formed with the connecting ring 32 .

[0039] The present disclosure does not limit the minimum distance between the metal protection mesh 21 and the top surface of the shell 1. In one embodiment provided in the present disclosure, the minimum distance between the metal protection mesh 21 and the top surface of the shell 1 is 2 cm-3 cm.

[0040] In another embodiment provided by the present disclosure, the buffer member 2 may further include an elastic buffer pad, which covers the top surface of the shell 1. The elastic buffer pad may buffer the impact force of the coal block on the shell 1, thereby protecting the shell 1.

[0041] Here, it should be noted that the present disclosure does not limit the specific type of the elastic buffer pad, and the elastic buffer pad can be one of a rubber buffer pad, a polyurethane buffer pad and a sponge buffer pad.

[0042] In order to further enhance the strength of the housing 1, optionally, as Figure 3 As shown, a plurality of reinforcing ribs 15 are arranged on the inner surface of the top of the housing 1, and a side of the reinforcing rib 15 close to the backwash filter is arranged to have a gap with the backwash filter. Arranging a plurality of reinforcing ribs 15 on the inner surface of the top of the housing 1 can increase the structural strength of the top of the housing 1, so that the top of the housing 1 is not easily deformed after being hit by a coal block, thereby protecting the backwash filter located in the cavity. At the same time, being arranged inside the housing 1 can also prevent the reinforcing ribs 15 from failing due to rust caused by water vapor and dust.

[0043] A gap is provided between the reinforcing rib 15 and the backwashing filter, so that the reinforcing rib 15 will not easily contact the backwashing filter even if it is deformed, thereby further protecting the backwashing filter.

[0044] In order to prevent the drain port 121 of the backwash filter from being blocked by sludge formed by water vapor and dust, optionally, as Figure 4 As shown, the pipe avoidance port 12 includes a sewage outlet 121 for avoiding the sewage outlet of the backwash filter, and the backwash filter protection device 100 also includes a dust cover 4, and the dust cover 4 and the sewage outlet 121 are located on the same side of the shell 1, and the top of the dust cover 4 is rotatably connected to the outer surface of the shell 1, and the dust cover 4 is used to cover the pipe mouth of the sewage outlet.

[0045] The backwash filter can discharge the sewage after flushing the filter screen through the sewage pipe, thereby ensuring the cleanliness of the filter screen. A rotatable dust cover 4 is set at the sewage outlet 121 for setting the sewage pipe, which can cover the pipe mouth of the sewage pipe, so that the pipe mouth of the sewage pipe will not be blocked by sludge formed by water vapor and dust due to the protection of the dust cover 4 when the sewage is not discharged, thereby ensuring the smooth flow of the pipe mouth of the sewage pipe in the sewage discharge state. In addition, since the dust cover 4 is rotatably connected to the outer surface of the shell 1, when the pipe mouth of the sewage pipe is discharged, the dust cover 4 can be lifted up under the pressure impact of the sewage flow, thereby rotating to a state where the sewage outlet 121 is not covered, and the normal sewage discharge of the sewage pipe is not affected.

[0046] Alternatively, if Figure 5 As shown, the backwash filter protection device 100 also includes a rotating shaft 5, a rotating shaft mounting seat 6 and a torsion spring 7. The rotating shaft mounting seat 6 is connected to the outer surface of the shell 1, the rotating shaft 5 is rotatably mounted on the rotating shaft mounting seat 6, the dust cover 4 is fixed to the rotating shaft 5, the torsion spring 7 is sleeved on the rotating shaft 5, the first torsion arm of the torsion spring 7 is connected to the rotating shaft mounting seat 6, and the second torsion arm of the torsion spring 7 is connected to the rotating shaft 5. The torsion spring 7 is used to apply an elastic force to the dust cover 4 to rotate it toward the pipe mouth close to the sewage pipe.

[0047] Since the first torsion arm of the torsion spring 7 is connected to the mounting seat of the rotating shaft 5, and the second torsion arm of the torsion spring 7 is connected to the rotating shaft 5, the elastic force of the torsion spring 7 can drive the rotating shaft 5 to rotate, so that the rotating shaft 5 drives the dust cover 4 to maintain the elastic force of rotating toward the pipe mouth close to the sewage pipe, so that the dust cover 4 can always cover the pipe mouth of the sewage pipe when the sewage pipe is not discharged, to prevent the pipe mouth from being blocked by sludge formed by water vapor and dust, and to ensure the smooth flow of the pipe mouth. When the sewage pipe is discharged, the water pressure can flush the dust cover 4, so that the dust cover 4 will not affect the normal sewage discharge of the sewage pipe. After the sewage discharge is completed, the dust cover 4 can cover the pipe mouth again under the elastic force of the torsion spring 7.

[0048] Alternatively, if Figure 1 , Figure 3 and Figure 4 As shown, the housing 1 includes a top plate 16 and a plurality of side plates 17 surrounding the top plate 16, the top plate 16 and the plurality of side plates 17 together define a cavity, the pipeline avoidance opening 12 and the harness avoidance opening 13 are formed on the side plates 17, the buffer 2 is mounted on the top plate 16, the connection between the side plate 17 and the top plate 16 is an arc transition connection, and the connection between two adjacent side plates 17 is an arc transition connection. Since the backwash filter is mounted on the hydraulic support, the backwash filter protection device 100 is covered on the backwash filter. As the hydraulic support is lifted and lowered, the pipeline attached to the hydraulic support is also lifted and moved together. During the movement of the pipeline, it may rub against the edge of the housing 1. The connection between the side plate 17 and the top plate 16 and the connection between the two adjacent side plates 17 are set as an arc transition connection, which can increase the contact area between the pipeline and the housing 1, thereby reducing the pressure, preventing the surface damage of the pipeline due to friction, and extending the service life of the pipeline.

[0049] As a second aspect of the present disclosure, the present disclosure provides a backwashing filter assembly, including a backwashing filter and the above-mentioned backwashing filter protection device 100, wherein the backwashing filter protection device 100 is covered on the outside of the backwashing filter.

[0050] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0052] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A backwash filter protection device, used for the backwash filter of the hydraulic support of the coal mining face in the coal mine, characterized in that: include: A shell, the bottom of which is used to be supported on a bracket for mounting the backwash filter, a cavity is formed inside the shell, an opening is formed at the bottom of the shell for allowing the backwash filter to enter the cavity, a pipe avoidance port and a harness avoidance port are formed on the side of the shell, the pipe avoidance port is used to avoid the pipe of the backwash filter, the harness avoidance port is used to avoid the harness of the backwash filter, the top of the pipe avoidance port and the top of the harness avoidance port are both closed ends, and the bottom of the pipe avoidance port and the bottom of the harness avoidance port are both open ends; A buffer is located outside the shell and installed on the top of the shell. The buffer is used to buffer the impact force of the falling coal blocks on the shell.

2. The backwash filter protection device according to claim 1, characterized in that: The buffer member includes a metal protective net, and the backwash filter protection device also includes a plurality of support rods, each of which extends in an up-down direction, the lower end of each support rod is connected to the top of the shell, and the upper end of each support rod is connected to the edge of the metal protective net.

3. The backwash filter protection device according to claim 2, characterized in that: The support rod comprises a rod body and a connecting ring, the lower end of the rod body is connected to the top of the shell, the connecting ring is located at the upper end of the rod body, and the connecting ring is passed through the mesh opening of the metal protective net.

4. The backwash filter protection device according to claim 2, characterized in that: The minimum distance between the metal protection net and the top surface of the shell is 2cm-3cm.

5. The backwash filter protection device according to claim 1, characterized in that: The buffer member includes an elastic buffer pad covered on a top surface of the housing.

6. The backwash filter protection device according to claim 1, characterized in that: A plurality of reinforcing ribs are arranged on the inner surface of the top of the shell, and a side of the reinforcing rib close to the backwashing filter is arranged to have a gap with the backwashing filter.

7. The backwash filter protection device according to any one of claims 1 to 6, characterized in that: The pipe avoidance port includes a sewage outlet for avoiding the sewage outlet of the backwash filter, and the backwash filter protection device also includes a dust cover, and the dust cover and the sewage outlet are located on the same side of the shell, and the top of the dust cover is rotatably connected to the outer surface of the shell, and the dust cover is used to cover the pipe mouth of the sewage outlet.

8. The backwash filter protection device according to claim 7, characterized in that: The backwash filter protection device also includes a rotating shaft, a rotating shaft mounting seat and a torsion spring, wherein the rotating shaft mounting seat is connected to the outer surface of the shell, the rotating shaft is rotatably mounted on the rotating shaft mounting seat, the dust cover is fixed to the rotating shaft, the torsion spring is sleeved on the rotating shaft, the first torsion arm of the torsion spring is connected to the rotating shaft mounting seat, the second torsion arm of the torsion spring is connected to the rotating shaft, and the torsion spring is used to apply an elastic force to the dust cover to rotate it toward the pipe mouth close to the sewage pipe.

9. The backwash filter protection device according to any one of claims 1 to 6, characterized in that: The housing includes a top plate and a plurality of side plates surrounding the top plate, the top plate and the plurality of side plates together define the cavity, the pipe escape opening and the harness escape opening are formed on the side plates, and the buffer is mounted on the top plate; The connection between the side plate and the top plate is connected by an arc transition, and the connection between two adjacent side plates is connected by an arc transition.

10. A backwash filter assembly, characterized in that: The invention comprises a backwashing filter and the backwashing filter protection device according to any one of claims 1 to 9, wherein the backwashing filter protection device cover is arranged outside the backwashing filter.

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