Dust removal device for high-voltage cabinet of tunnel power distribution room

Abstract

The utility model relates to the technical field of power distribution room high-voltage cabinets, in particular to a tunnel power distribution room high-voltage cabinet dust removal device which comprises a base, the inner wall of the top of the base is rotationally connected with the outer wall of a driving part, a motor drives a rotating shaft to drive a main bevel gear to rotate, and the main bevel gear drives a secondary bevel gear to rotate through meshing force. A driven shaft rotates along with a secondary bevel gear, the driven shaft drives a first transmission shaft and a second transmission shaft to rotate through an insertion block and a clamping block, first fan blades rotate to suck external air into the high-voltage cabinet main body, and a filter plate blocks impurities such as dust and particles in the air, so that the cleanness of the internal environment of the equipment and the purity of the air are ensured; and second fan blades rotate to discharge heat in the equipment through an air outlet, so that the air circulation performance in the device is improved, dust is blown up, moves into a dust accumulation groove along with air flow and is discharged out of the high-voltage cabinet main body through a circulation opening in the air circulation process, and the cleanness of the equipment is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage cabinets in power distribution rooms, in particular to a dust removal device for high-voltage cabinets in a tunnel power distribution room. Background Art

[0002] Tunnel engineering is an underground structure with complex construction environment and conditions. During the tunnel construction process, a lot of dust and dirt may be generated due to the influence of various factors such as geological structure, construction method and process.

[0003] Currently, most high-voltage cabinets in power distribution rooms on the market are unable to remove dust. When used in tunnels, these dust and dirt may reduce the insulation performance of the equipment, increase the risk of equipment failure, and even cause equipment damage or cause serious accidents such as fire. Utility Model Content

[0004] The purpose of the utility model is to provide a high-voltage cabinet dust removal device for a tunnel power distribution room, so as to solve the problem that dust and dirt in the tunnel may reduce the insulation performance of the equipment proposed in the above background technology. To achieve the above purpose, the utility model provides the following technical solutions: a high-voltage cabinet dust removal device for a tunnel power distribution room, comprising a base, the inner wall of the top of the base is rotatably connected to the outer wall of the driving member, the inner wall of the driving member is movably connected to the outer wall of the air inlet member, and the outer wall of the air inlet member is movably connected to the inner wall of the base near the center.

[0005] The inner wall of the base is threadedly connected to the outer wall of the air outlet member, the outer wall of the air outlet member is movably engaged with the inner wall of the driving member, the back of the air inlet member is movably abutted against the front of the filter member, and the front of the filter member is fixedly connected to the back of the base by bolts.

[0006] Preferably, the base is composed of a moving wheel, a high-voltage cabinet body and a partition, and the top of the moving wheel is fixedly connected to the bottom of the high-voltage cabinet body, the inner bottom wall of the high-voltage cabinet body is fixedly connected to the bottom of the partition, and the cross-sectional shape of the partition is set to be annular, a dust accumulation groove is formed between the outer wall of the partition and the inner wall of the high-voltage cabinet body, and a flow port is provided near the bottom of the dust accumulation groove of the high-voltage cabinet body, an air inlet is provided on the back of the high-voltage cabinet body, and installation grooves are provided on both sides of the air inlet, an air outlet is provided on the front of the high-voltage cabinet body, and a fixing groove is provided above the high-voltage cabinet body near the air outlet.

[0007] Preferably, the driving member includes a protection block, a motor, a rotating shaft, a main bevel gear, a secondary bevel gear, a driven shaft and two supporting blocks, and the inner wall of the protection block is fixedly connected to the outer wall of the motor, the output end of the motor is fixedly connected to the top of the rotating shaft through a coupling, and the outer wall of the bottom end of the rotating shaft is provided with a main bevel gear, the outer wall of the main bevel gear is meshed with the outer wall of the secondary bevel gear, and the secondary bevel gear is arranged on the outer wall at the center of the driven shaft, the outer walls of the driven shaft close to both ends are rotatably connected to the inner walls of the two supporting blocks respectively, and one end of the driven shaft is provided with a locking groove, the other end of the driven shaft is provided with a slot, and the tops of the two supporting blocks are fixedly connected to the inner top wall of the high-voltage cabinet body, the bottom of the protection block is fixedly connected to the top of the high-voltage cabinet body by bolts, and the outer wall of the rotating shaft is rotatably connected to the inner wall of the top of the high-voltage cabinet body.

[0008] Preferably, the air inlet member is composed of an outer shell, a limiting ring, a rotating ring, a connecting rod, a first transmission shaft, an insert block and a first fan blade, and the front side of the outer shell is movably abutted against the back side of the limiting ring, the inner wall of the outer shell is rotatably connected to the outer wall of the rotating ring, and the inner wall of the rotating ring is fixedly connected to the outer wall of one end of the connecting rod, the outer wall of the other end of the connecting rod is fixedly connected to the inner wall of the first transmission shaft near one end, and an insert block is provided at the other end of the first transmission shaft, the inner wall of the first transmission shaft near the center is fixedly connected to the outer wall of the first fan blade, and the outer wall of the limiting ring is fixedly connected to the inner wall near the front of the air inlet, the outer wall of the outer shell is movably plugged into the inner wall of the air inlet near the center, and the outer wall of the insert block is movably plugged into the inner wall of the slot.

[0009] Preferably, the air outlet member includes a toggle block, a threaded rod, a protective shell, a support rod, a support ring, a second transmission shaft, a limit block, a clamping block and a second blade, and the bottom of the toggle block is fixedly connected to the top of the threaded rod, the outer wall of the bottom end of the threaded rod is threadedly connected to the inner wall of the top of the protective shell, and the inner wall of the protective shell is fixedly connected to the outer wall of one end of the support rod, the outer wall of the other end of the support rod is fixedly connected to the inner wall of the support ring, and the inner wall of the support ring is rotatably connected to the outer wall of the second transmission shaft, the outer wall of the second transmission shaft close to the support ring is fixedly connected to the inner wall of the limit block, and the end of the second transmission shaft away from the support ring is provided with a clamping block, the inner wall of the second transmission shaft close to the center is fixedly connected to the outer wall of the second fan blade, and the outer wall of the protective shell is movably plugged into the inner wall of the air outlet, the outer wall of the threaded rod is threadedly connected to the inner wall of the fixing groove, and the outer wall of the clamping block is movably clamped to the inner wall of the clamping groove.

[0010] Preferably, the filter element consists of a filter plate, two mounting blocks and two fastening bolts, and a mounting block is respectively provided on both sides of the filter plate, the front faces of the two mounting blocks are respectively fixedly connected to the back faces of the two mounting grooves by two fastening bolts, and the front face of the filter plate is movably abutted against the back face of the outer shell.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, the main bevel gear is driven to rotate by the motor-driven rotating shaft, and the main bevel gear drives the secondary bevel gear to rotate through the meshing force, so that the driven shaft follows the secondary bevel gear to rotate, and the driven shaft drives the first transmission shaft and the second transmission shaft to rotate through the plug block and the clamping block. The first fan blade rotates to suck external air into the interior of the high-voltage cabinet body, and the filter plate blocks impurities such as dust and particulate matter in the air to ensure the cleanliness of the internal environment of the equipment and the purity of the air. The second fan blade rotates to discharge the heat inside the equipment through the air outlet, thereby improving the air circulation inside the device. During the air circulation process, dust is blown up and moves to the dust storage tank with the airflow, and is discharged to the outside of the high-voltage cabinet body through the circulation port, thereby keeping the equipment clean.

[0013] In the utility model, after the filter plate is used for a long time, a lot of dust will accumulate. The filter plate can be taken out from the installation groove by loosening the fastening bolts. After the filter plate is taken out, the outer shell is taken out from the air inlet for easy cleaning or replacement. The threaded rod is driven to rotate by rotating the toggle block to release the fixation of the protective shell and the high-voltage cabinet body, making installation and disassembly simple and convenient, thereby reducing maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 It is an exploded view of the utility model;

[0017] Figure 4 It is an exploded view of the air inlet member in the utility model;

[0018] Figure 5 It is an exploded view of the air outlet member in the utility model.

[0019] In the figure: 1, base; 101, moving wheel; 102, high-voltage cabinet body; 103, partition; 2, driving member; 201, protection block; 202, motor; 203, rotating shaft; 204, main bevel gear; 205, secondary bevel gear; 206, driven shaft; 207, supporting block; 3, air inlet member; 301, shell; 302, limit ring; 303, rotating ring; 304, connecting rod; 305, first transmission shaft; 306, plug block; 307, first fan blade; 4, air outlet member; 401, toggle block; 402, threaded rod; 403, protective shell; 404, supporting rod; 405, supporting ring; 406, second transmission shaft; 407, limit block; 408, locking block; 409, second fan blade; 5, filter member; 501, filter plate; 502, mounting block; 503, fastening bolt. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 5 The utility model provides a technical solution: a high-voltage cabinet dust removal device for a tunnel power distribution room, comprising a base 1, the inner wall of the top of the base 1 is rotatably connected to the outer wall of a driving member 2, the inner wall of the driving member 2 is movably plugged into the outer wall of an air inlet member 3, and the outer wall of the air inlet member 3 is movably plugged into the inner wall of the base 1 near the center.

[0022] The inner wall of the base 1 is threadedly connected to the outer wall of the air outlet member 4, the outer wall of the air outlet member 4 is movably engaged with the inner wall of the driving member 2, the back of the air inlet member 3 is movably abutted against the front of the filter member 5, and the front of the filter member 5 is fixedly connected to the back of the base 1 by bolts.

[0023] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the base 1 is composed of a moving wheel 101, a high-voltage cabinet body 102 and a partition 103, and the top of the moving wheel 101 is fixedly connected to the bottom of the high-voltage cabinet body 102, the inner bottom wall of the high-voltage cabinet body 102 is fixedly connected to the bottom of the partition 103, and the cross-sectional shape of the partition 103 is set to be annular, a dust accumulation groove is formed between the outer wall of the partition 103 and the inner wall of the high-voltage cabinet body 102, and the high-voltage cabinet body 102 is provided with a circulation port near the bottom of the dust accumulation groove, an air inlet is provided on the back of the high-voltage cabinet body 102, and mounting grooves are provided on both sides of the air inlet, an air outlet is provided on the front of the high-voltage cabinet body 102, and a fixed groove is provided above the high-voltage cabinet body 102 near the air outlet, air enters the interior of the high-voltage cabinet body 102 through the air inlet, and during the air circulation process, dust is blown up and moves to the dust accumulation groove with the air flow, and is discharged to the outside of the high-voltage cabinet body 102 through the circulation port, thereby keeping the equipment clean, thereby improving the operating reliability and service life of the equipment.

[0024] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the driving member 2 includes a protection block 201, a motor 202, a rotating shaft 203, a main bevel gear 204, a secondary bevel gear 205, a driven shaft 206 and two supporting blocks 207, and the inner wall of the protection block 201 is fixedly connected to the outer wall of the motor 202, the output end of the motor 202 is fixedly connected to the top of the rotating shaft 203 through a coupling, and the outer wall of the bottom end of the rotating shaft 203 is provided with a main bevel gear 204, the outer wall of the main bevel gear 204 is meshed with the outer wall of the secondary bevel gear 205, and the secondary bevel gear 205 is arranged on the outer wall at the center of the driven shaft 206, and the outer walls of the driven shaft 206 near both ends are respectively connected to the two supporting blocks 20 7 is rotatably connected, and one end of the driven shaft 206 is provided with a locking groove, the other end of the driven shaft 206 is provided with a slot, and the tops of the two support blocks 207 are fixedly connected to the inner top wall of the high-voltage cabinet body 102, the bottom of the protection block 201 is fixedly connected to the top of the high-voltage cabinet body 102 by bolts, and the outer wall of the rotating shaft 203 is rotatably connected to the inner wall of the top of the high-voltage cabinet body 102, the rotating shaft 203 is driven to rotate by the motor 202, and the rotation of the rotating shaft 203 drives the main bevel gear 204 at the bottom to rotate accordingly, and the main bevel gear 204 drives the secondary bevel gear 205 to rotate through the meshing force, so that the driven shaft 206 rotates accordingly.

[0025] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the air inlet member 3 is composed of a shell 301, a limiting ring 302, a rotating ring 303, a connecting rod 304, a first transmission shaft 305, an insert 306 and a first fan blade 307, and the front side of the shell 301 is movably abutted against the back side of the limiting ring 302, the inner wall of the shell 301 is rotatably connected to the outer wall of the rotating ring 303, and the inner wall of the rotating ring 303 is fixedly connected to the outer wall of one end of the connecting rod 304, the outer wall of the other end of the connecting rod 304 is fixedly connected to the inner wall of the first transmission shaft 305 near one end, and the other end of the first transmission shaft 305 is provided with an insert 306, and the inner wall of the first transmission shaft 305 near the center is connected to the first fan blade 3 07 is fixedly connected, and the outer wall of the limit ring 302 is fixedly connected to the inner wall of the air inlet near the front, the outer wall of the shell 301 is movably plugged into the inner wall of the air inlet near the center, and the outer wall of the plug block 306 is movably plugged into the inner wall of the slot. When the driven shaft 206 rotates, it drives the plug block 306 to rotate, and then drives the first transmission shaft 305 to rotate, so that the first fan blade 307 rotates to form an airflow, and the external air is sucked into the high-voltage cabinet body 102. The first transmission shaft 305 and the driven shaft 206 can be connected through the plug block 306. When disassembly is required, the shell 301 can be taken out from the air inlet for quick separation, which improves the maintainability of the equipment.

[0026] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the air outlet member 4 includes a toggle block 401, a threaded rod 402, a protective shell 403, a support rod 404, a support ring 405, a second transmission shaft 406, a limit block 407, a snap block 408 and a second fan blade 409, and the bottom of the toggle block 401 is fixedly connected to the top of the threaded rod 402, the outer wall of the bottom end of the threaded rod 402 is threadedly connected to the inner wall of the top of the protective shell 403, and the inner wall of the protective shell 403 is fixedly connected to the outer wall of one end of the support rod 404, the outer wall of the other end of the support rod 404 is fixedly connected to the inner wall of the support ring 405, and the inner wall of the support ring 405 is rotatably connected to the outer wall of the second transmission shaft 406, the outer wall of the second transmission shaft 406 close to the support ring 405 is fixedly connected to the inner wall of the limit block 407, and the end of the second transmission shaft 406 away from the support ring 405 is provided with a snap block 408, and the second The inner wall of the transmission shaft 406 near the center is fixedly connected to the outer wall of the second fan blade 409, and the outer wall of the protective shell 403 is movably plugged into the inner wall of the air outlet, the outer wall of the threaded rod 402 is threadedly connected to the inner wall of the fixing groove, and the outer wall of the locking block 408 is movably locked with the inner wall of the locking groove. When the driven shaft 206 rotates, it drives the locking block 408 to rotate, and then drives the second transmission shaft 406 to rotate. The second fan blade 409 rotates driven by the second transmission shaft 406 to form an airflow, and the heat inside the equipment is discharged through the air outlet, which plays a role in ventilation and heat dissipation, improves the air circulation inside the device, and reduces the humidity when used in the tunnel. The threaded rod 402 is driven to rotate by rotating the toggle block 401, so that the protective shell 403 is released from the high-voltage cabinet body 102, and installation and disassembly become simple and convenient, reducing maintenance costs and time.

[0027] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the filter element 5 is composed of a filter plate 501, two mounting blocks 502 and two fastening bolts 503, and a mounting block 502 is respectively arranged on both sides of the filter plate 501, and the front sides of the two mounting blocks 502 are respectively fixedly connected to the back sides of the two mounting grooves by two fastening bolts 503, and the front side of the filter plate 501 is movably abutted against the back side of the shell 301. When the first fan blade 307 rotates to inhale air, the filter plate 501 blocks impurities such as dust and particulate matter in the air to ensure the cleanliness of the internal environment of the equipment and the purity of the air. After the filter plate 501 is used for a long time, more dust will accumulate. By loosening the fastening bolts 503, the filter plate 501 can be taken out from the mounting groove for cleaning or replacement.

[0028] The use method and advantages of the utility model: When the high-voltage cabinet dust removal device of the tunnel power distribution room is working, the working process is as follows:

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the motor 202 drives the rotating shaft 203 to drive the main bevel gear 204 to rotate, and the main bevel gear 204 drives the secondary bevel gear 205 to rotate through the meshing force, so that the driven shaft 206 rotates following the secondary bevel gear 205, and the driven shaft 206 drives the first transmission shaft 305 and the second transmission shaft 406 to rotate through the plug block 306 and the clamping block 408, and the first fan blade 307 rotates to suck the external air into the high-voltage cabinet body 102, and the filter plate 501 blocks dust, particles and other impurities in the air to ensure the cleanliness of the internal environment of the equipment and the purity of the air, and the second fan blade 409 rotates to discharge the heat inside the equipment through the air outlet, thereby improving The air circulation inside the device is improved. During the air circulation process, dust is blown up and moves to the dust storage groove with the air flow, and is discharged to the outside of the high-voltage cabinet body 102 through the circulation port, thereby keeping the equipment clean. After the filter plate 501 is used for a long time, more dust will accumulate. The filter plate 501 can be removed from the installation groove by loosening the fastening bolts 503. After the filter plate 501 is removed, the outer shell 301 is removed from the air inlet for easy cleaning or replacement. The threaded rod 402 is driven to rotate by rotating the toggle block 401 to release the fixation of the protective shell 403 and the high-voltage cabinet body 102, making installation and disassembly simple and convenient, thereby reducing maintenance costs and time.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-voltage cabinet dust removal device for a tunnel power distribution room, comprising a base (1), characterized in that: The inner wall at the top of the base (1) is rotatably connected to the outer wall of the driving member (2), the inner wall of the driving member (2) is movably plugged into the outer wall of the air inlet member (3), and the outer wall of the air inlet member (3) is movably plugged into the inner wall near the center of the base (1); The inner wall of the base (1) is threadedly connected to the outer wall of the air outlet member (4), the outer wall of the air outlet member (4) is movably engaged with the inner wall of the driving member (2), the back surface of the air inlet member (3) is movably abutted against the front surface of the filter member (5), and the front surface of the filter member (5) is fixedly connected to the back surface of the base (1) by bolts.

2. A dust removal device for high-voltage cabinets in a tunnel power distribution room according to claim 1, characterized in that: The base (1) is composed of a moving wheel (101), a high-voltage cabinet body (102) and a partition (103), and the top of the moving wheel (101) is fixedly connected to the bottom of the high-voltage cabinet body (102), the inner bottom wall of the high-voltage cabinet body (102) is fixedly connected to the bottom of the partition (103), and the cross-sectional shape of the partition (103) is set to be annular, a dust accumulation groove is formed between the outer wall of the partition (103) and the inner wall of the high-voltage cabinet body (102), and the high-voltage cabinet body (102) is provided with a flow port near the bottom of the dust accumulation groove, an air inlet is provided on the back of the high-voltage cabinet body (102), and installation grooves are provided on both sides of the air inlet, an air outlet is provided on the front of the high-voltage cabinet body (102), and a fixing groove is provided above the high-voltage cabinet body (102) near the air outlet.

3. A dust removal device for high-voltage cabinets in a tunnel power distribution room according to claim 2, characterized in that: The driving member (2) comprises a protection block (201), a motor (202), a rotating shaft (203), a main bevel gear (204), a secondary bevel gear (205), a driven shaft (206) and two supporting blocks (207), wherein the inner wall of the protection block (201) is fixedly connected to the outer wall of the motor (202), the output end of the motor (202) is fixedly connected to the top end of the rotating shaft (203) via a coupling, and the outer wall of the bottom end of the rotating shaft (203) is provided with a main bevel gear (204), the outer wall of the main bevel gear (204) is meshedly connected to the outer wall of the secondary bevel gear (205), and the secondary bevel gear (206) is meshedly connected to the outer wall of the secondary bevel gear (205). 205) is arranged on the outer wall at the center of the driven shaft (206), the outer walls of the driven shaft (206) near the two ends are rotatably connected to the inner walls of the two support blocks (207), and one end of the driven shaft (206) is provided with a locking groove, and the other end of the driven shaft (206) is provided with a slot, and the tops of the two support blocks (207) are fixedly connected to the inner top wall of the high-voltage cabinet body (102), the bottom of the protection block (201) is fixedly connected to the top of the high-voltage cabinet body (102) by bolts, and the outer wall of the rotating shaft (203) is rotatably connected to the inner wall of the top of the high-voltage cabinet body (102).

4. A dust removal device for high-voltage cabinets in a tunnel power distribution room according to claim 3, characterized in that: The air inlet member (3) is composed of a housing (301), a limiting ring (302), a rotating ring (303), a connecting rod (304), a first transmission shaft (305), an insert (306) and a first fan blade (307), and the front surface of the housing (301) is movably abutted against the back surface of the limiting ring (302), the inner wall of the housing (301) is rotatably connected to the outer wall of the rotating ring (303), and the inner wall of the rotating ring (303) is fixedly connected to the outer wall of one end of the connecting rod (304), and the connecting rod (304) is ) is fixedly connected to the inner wall of the first transmission shaft (305) near one end, and an insert block (306) is provided at the other end of the first transmission shaft (305), the inner wall of the first transmission shaft (305) near the center is fixedly connected to the outer wall of the first fan blade (307), and the outer wall of the limit ring (302) is fixedly connected to the inner wall of the air inlet near the front, the outer wall of the shell (301) is movably connected to the inner wall of the air inlet near the center, and the outer wall of the insert block (306) is movably connected to the inner wall of the slot.

5. A dust removal device for high-voltage cabinets in a tunnel power distribution room according to claim 3, characterized in that: The air outlet member (4) comprises a toggle block (401), a threaded rod (402), a protective shell (403), a support rod (404), a support ring (405), a second transmission shaft (406), a limit block (407), a snap block (408) and a second fan blade (409), wherein the bottom of the toggle block (401) is fixedly connected to the top of the threaded rod (402), the outer wall of the bottom end of the threaded rod (402) is threadedly connected to the inner wall of the top of the protective shell (403), and the inner wall of the protective shell (403) is fixedly connected to the outer wall of one end of the support rod (404), and the outer wall of the other end of the support rod (404) is fixedly connected to the inner wall of the support ring (405). , and the inner wall of the support ring (405) is rotatably connected to the outer wall of the second transmission shaft (406), the outer wall of the second transmission shaft (406) close to the support ring (405) is fixedly connected to the inner wall of the limit block (407), and a snap-fit ​​block (408) is provided at one end of the second transmission shaft (406) away from the support ring (405), the inner wall of the second transmission shaft (406) close to the center is fixedly connected to the outer wall of the second fan blade (409), and the outer wall of the protective shell (403) is movably plugged into the inner wall of the air outlet, the outer wall of the threaded rod (402) is threadedly connected to the inner wall of the fixing groove, and the outer wall of the snap-fit ​​block (408) is movably snap-fitted to the inner wall of the snap-fit ​​groove.

6. A dust removal device for high-voltage cabinets in a tunnel power distribution room according to claim 4, characterized in that: The filter element (5) is composed of a filter plate (501), two mounting blocks (502) and two fastening bolts (503), and a mounting block (502) is respectively provided on both sides of the filter plate (501), the front faces of the two mounting blocks (502) are respectively fixedly connected to the back faces of the two mounting grooves through the two fastening bolts (503), and the front face of the filter plate (501) is movably abutted against the back face of the housing (301).

Images