CN117328545A

CN117328545A - Municipal works construction drainage device

Info

Publication number: CN117328545A
Application number: CN202311492813.2A
Authority: CN
Inventors: 任志耀; 曹主宇; 刘家林; 陶武志; 裴国琦
Original assignee: Zhongsheng Global Construction Group Co ltd
Current assignee: Zhongsheng Global Construction Group Co ltd
Priority date: 2023-11-10
Filing date: 2023-11-10
Publication date: 2024-01-02

Abstract

The invention relates to the field of municipal engineering, in particular to a drainage device for municipal engineering construction. The invention not only can fully filter sewage, but also can fully clear sediment, thereby effectively preventing blockage, ensuring the smoothness of drainage better and improving the drainage efficiency. A municipal engineering construction drainage device comprises a protective shell and the like; fixedly connected with protective housing on the bottom plate, fixedly connected with drain pipe on the protective housing. The motor drive scrapes and moves the frame rotation and can scrape the drain pipe inner wall and wipe, scrapes and moves the frame rotation and can drive three brush dish through three driven gear and rotate together, and the brush dish is scraped the drain pipe inner wall more comprehensively and is wiped clean again when scraping and move the frame pivoted, and then avoids silt stone to pile up in the drain pipe and cause the jam of drain pipe to further improve the drainage efficiency of drain pipe.

Description

Municipal works construction drainage device

Technical Field

The invention relates to the field of municipal engineering, in particular to a drainage device for municipal engineering construction.

Background

In the drainage pipeline construction process of municipal works, if meet rainwater weather, then there is the rainwater to store up in the sump pit to mix with the silt in the sump pit, form sewage, in order to prevent that sewage from influencing later stage's construction, then need use drainage device to discharge sewage in the sump pit.

When the existing drainage device discharges sewage in the water collecting well, the sewage is filtered by simply arranging a filter screen, and the drainage device is blocked easily by the sediment stones accompanying the sewage, so that drainage failure is caused, the drainage device needs to be cleaned manually, drainage efficiency is reduced, sediment in a pipe can be cleaned by some drainage devices, but the sediment still remains in the pipe, and drainage efficiency is influenced.

Disclosure of Invention

In view of the above, the invention provides a municipal engineering construction drainage device which not only can filter sewage more fully, but also can clean sediment more fully, thereby preventing blockage more effectively, ensuring the smoothness of drainage better and improving the drainage efficiency.

The technical scheme is as follows: the utility model provides a municipal works construction drainage device, including the bottom plate, fixedly connected with protective housing on the bottom plate, fixedly connected with drain pipe on the protective housing, the drain pipe is "L" shape structure, protective housing top fixedly connected with drainage lid, the drainage lid is located the upper end of drain pipe, drain pipe lower part intercommunication has a dirt storage tube, dirt storage tube is "U" shape structure, just dirt storage tube is located inside the protective housing, the intercommunication has the blow off pipe on the dirt storage tube, the blow off pipe with protective housing fixed connection, be equipped with the clearance subassembly on the protective housing, the clearance subassembly be used for with drain pipe lower part inner wall clean up, be equipped with the blowdown subassembly on the clearance subassembly, the blowdown subassembly be used for with the dirt in the drain pipe is discharged.

In addition, particularly preferred, the cleaning assembly comprises a motor, the motor is fixedly connected inside the protective housing, the scraping frame is fixedly connected with on the output shaft of the motor, the scraping frame is provided with three scraping plates, the scraping frame is rotationally connected with the drain pipe, the three scraping plates of the scraping frame are all in contact with the inner wall of the drain pipe, a cross rod is fixedly connected with on the inner wall of the drain pipe, the cross rod is rotationally connected with the scraping frame, a fluted disc is fixedly connected with on the cross rod, three rotating rods are rotationally connected on the scraping frame, each rotating rod is close to one end of the scraping frame, each driven gear is meshed with the fluted disc, each rotating rod is fixedly connected with a brush disc, each brush disc is in contact with the inner wall of the drain pipe, and a filter screen is fixedly connected with on the inner wall of the lower end of the drain pipe.

In addition, it is particularly preferred that the sewage draining assembly comprises a transmission gear, the transmission gear is fixedly connected to the scraping frame, a screw rod is rotatably connected to the protective shell, the screw rod is rotatably connected with the sewage storage pipe, the screw rod penetrates through the sewage draining pipe, a rotating gear is fixedly connected to one side, close to the motor, of the screw rod, the transmission gear is meshed with the rotating gear, an arc-shaped baffle is fixedly connected to one end, far away from the motor, of the screw rod, a sealing plate is fixedly connected to the inner wall of the sewage draining pipe, and the sealing plate is in contact with the arc-shaped baffle.

In addition, particularly preferred is, still include edulcoration subassembly, the edulcoration subassembly is established on the drain pipe, the edulcoration subassembly is including the drain pipe, drain pipe fixed connection is in on the protective housing, the drain pipe with drain pipe intercommunication, fixedly connected with filter screen two on the drain pipe inner wall, filter screen two lower part fixedly connected with guide ring, rotationally be connected with the push pedal on the filter screen two, the push pedal with drain pipe inner wall contact, push pedal bottom fixedly connected with gear ring, rotationally be connected with montant in the protective housing, a bevel gear of montant bottom fixedly connected with, also fixedly connected with bevel gear on the scraping frame, two bevel gear meshes, montant upper end fixedly connected with spur gear, spur gear with gear ring meshing.

In addition, particularly preferred is, still including anti-blocking assembly, anti-blocking assembly establishes on the protective housing, anti-blocking assembly is including the apron, the apron swivelling joint is in protective housing upper portion, the apron with the drainage lid contacts, it has a plurality of bar groove to open on the apron, the apron with be connected with torsion spring between the protective housing, sliding connection has the depression bar on the protective housing, the apron passes the depression bar, the depression bar bottom is equipped with the ball, just be equipped with the cylinder pole in the middle of the depression bar, the depression bar with be connected with reset spring between the protective housing, fixedly connected with swivel plate on the montant, the swivel plate bottom is equipped with arc triangular block, the swivel plate is located the ball top of depression bar.

In addition, it is particularly preferable that the device further comprises a material passing plate, wherein the material passing plate is connected to the impurity discharging pipe in a sliding manner, a guide rod is fixedly connected to the material passing plate, and the guide rod is connected with a cylindrical rod on the pressure rod in a sliding manner.

In addition, it is particularly preferable that the scraping device further comprises a brush frame, wherein the brush frame is fixedly connected to the scraping frame, and the brush frame is contacted with the filter screen I.

The invention has the beneficial effects that: 1. according to the invention, the motor can drive the scraping frame to rotate and scrape the inner wall of the drain pipe cleanly, the scraping frame can enable the three driven gears to rotate, the driven gears rotate and drive the rotating rod and the brush disc to rotate together, the brush disc can scrape the inner wall of the drain pipe more comprehensively, the inner wall of the drain pipe is further scraped cleanly, sediment adhering to the inner wall of the drain pipe is effectively prevented, the scraping frame can drive the transmission gear to rotate while rotating to drive the spiral rod to rotate, sediment stones in the sewage storage pipe can be pushed into the drain pipe and discharged along the drain pipe, and the blockage of the drain pipe caused by accumulation of the sediment stones in the drain pipe is avoided, so that the drainage efficiency of the drain pipe is further improved.

2. According to the invention, the scraping frame rotates to drive one bevel gear to rotate, and simultaneously drives the other bevel gear to rotate, the other bevel gear rotates to drive the vertical rod to rotate, the vertical rod rotates to drive the straight gear to rotate, and then the gear ring is driven to rotate, the gear ring rotates to drive the pushing plate to rotate, and the pushing plate rotates to push the sediment stones accumulated on the second filter screen into the impurity discharging pipe and discharge the sediment stones along the impurity discharging pipe, so that sediment stones in sewage can be further filtered and removed, and the sediment stones filtered in the drain pipe are effectively and fully removed, so that the smooth drainage of the drain pipe is further ensured.

3. According to the invention, the vertical rod rotates to drive the rotating plate to rotate, the rotating plate rotates to push the pressing rod to move downwards firstly and drive the cover plate to swing upwards, the cover plate swings to spring away large-particle stones and the like on the cover plate, so that the cover plate is prevented from being blocked by the large-particle stones and the like, when the vertical rod continues to rotate and does not push the pressing rod to move, the reset spring drives the pressing rod to move upwards, the torsion spring drives the cover plate to reset at the moment, the cover plate is driven to swing intermittently, and the large-particle stones and the like on the cover plate are cleaned through the cover plate in time, so that the smoothness of drainage is more fully ensured.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a second embodiment of the present invention.

Fig. 3 is an enlarged perspective view of fig. 1 a according to the present invention.

FIG. 4 is a schematic view of a partially cut-away perspective structure of a drain assembly, an impurity removal assembly, and an anti-clogging assembly of the present invention.

FIG. 5 is a schematic perspective view, partially in section, of a cleaning assembly, a blowdown assembly and an impurity removal assembly of the present invention.

Fig. 6 is an enlarged perspective view of the structure of fig. 5B according to the present invention.

Fig. 7 is a partially disassembled perspective view of the cleaning assembly of the present invention.

Fig. 8 is a partially disassembled perspective view of the impurity removing unit of the present invention.

In the figure: 1. the device comprises a bottom plate, 2, a protective shell, 3, a drain pipe, 4, a drain cover, 6, a sewage storage pipe, 7, a drain pipe, 81, a motor, 82, a scraping frame, 83, a cross rod, 84, a fluted disc, 85, a rotating rod, 86, a driven gear, 87, a brush disc, 88, a first filter screen, 91, a transmission gear, 92, a spiral rod, 93, a rotating gear, 94, an arc baffle, 95, a sealing plate, 101, a drain pipe, 102, a second filter screen, 103, a guide ring, 104, a push plate, 105, a gear ring, 106, a vertical rod, 107, a bevel gear, 108, a spur gear, 111, a cover plate, 112, a torsion spring, 113, a compression rod, 114, a reset spring, 115, a rotating plate, 121, a feeding plate, 122, a guide rod, 13 and a brush frame.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1: the utility model provides a municipal works construction drainage device, as shown in fig. 1-7, including bottom plate 1, there is protective housing 2 through bolted connection on the bottom plate 1, there is drain pipe 3 through bolted connection on the protective housing 2, drain pipe 3 is "L" shape structure, there is drainage lid 4 at the protective housing 2 top through bolted connection, drainage lid 4 is located drain pipe 3's upper end, drain pipe 3 lower part intercommunication has dirt storage tube 6, dirt storage tube 6 is "U" shape structure, just dirt storage tube 6 is located protective housing 2 is inside, the intercommunication has blow off tube 7 on the dirt storage tube 6, blow off tube 7 with protective housing 2 passes through bolted connection, be equipped with the clearance subassembly on the protective housing 2, the clearance subassembly is used for with drain pipe 3 lower part inner wall clean up, be equipped with the blowdown subassembly on the clearance subassembly, the blowdown subassembly is used for with the dirt in the drain pipe 3 is discharged.

The cleaning assembly comprises a motor 81, the motor 81 is connected inside the protective housing 2 through a bolt, a scraping frame 82 is fixedly connected to an output shaft of the motor 81, three scraping plates are arranged on the scraping frame 82, the scraping frame 82 is connected with the drain pipe 3 in a rotating mode, three scraping plates of the scraping frame 82 are in contact with the inner wall of the drain pipe 3, a cross rod 83 is connected to the inner wall of the drain pipe 3 through a bolt, the cross rod 83 is connected with a fluted disc 84 through a flat key, three rotating rods 85 are connected to the scraping frame 82 in a rotating mode, each rotating rod 85 is close to one end of the scraping frame 82 and is connected with a driven gear 86 through a flat key, each driven gear 86 is meshed with the fluted disc 84, each brush disc 87 is connected to the other end of the rotating rod 85 through a bolt, each brush disc 87 is in contact with the inner wall of the drain pipe 3, and the inner wall of the lower end of the drain pipe 3 is connected with a filter screen 88 through a bolt.

The sewage disposal assembly comprises a transmission gear 91, the transmission gear 91 is connected to the scraping frame 82 through a flat key, a screw rod 92 is rotatably connected to the protective housing 2, the screw rod 92 is rotatably connected to the sewage storage pipe 6, the screw rod 92 penetrates through the sewage disposal pipe 7, a rotating gear 93 is connected to one side, close to the motor 81, of the screw rod 92 through the flat key, the transmission gear 91 is meshed with the rotating gear 93, an arc-shaped baffle 94 is fixedly connected to one end, far away from the motor 81, of the screw rod 92, a sealing plate 95 is fixedly connected to the inner wall of the sewage disposal pipe 7, and the sealing plate 95 is in contact with the arc-shaped baffle 94.

In actual operation, a worker firstly buries the device at a water inlet of a water collecting well, then starts a motor 81, sewage firstly passes through a water discharging cover 4, a water discharging pipe 3 discharges the sewage of the water collecting well, a first filter screen 88 filters the sewage discharged by the water discharging pipe 3, impurities such as sand and stones in the sewage are prevented from being discharged, an output shaft of the motor 81 rotates to drive a scraping frame 82 to rotate, the scraping frame 82 rotates to enable three scraping plates of the scraping frame 82 to scrape the inner wall of the water discharging pipe 3, dirt on the inner wall of the water discharging pipe 3 is scraped, the scraping frame 82 rotates to drive three rotating rods 85, three driven gears 86 and three brush discs 87 to rotate together, the driven gears 86 rotate along fluted discs 84, the driven gears 86 rotate to drive the rotating rods 85 and the brush discs 87 to rotate together, the brush discs 87 self-rotate to scrape the inner wall of the water discharging pipe 3 more comprehensively, the inner wall of the drain pipe 3 is wiped clean, sediment is effectively prevented from adhering to the inner wall of the drain pipe 3, thereby effectively improving the drainage efficiency of the drain pipe 3, when sewage flows downwards along the drain pipe 3, impurities such as sediment stones in the sewage can enter the sewage storage pipe 6 along the drain pipe 3, the scraping frame 82 rotates and drives the transmission gear 91 to rotate, the transmission gear 91 rotates and drives the rotation gear 93 to rotate, the rotation gear 93 rotates and drives the spiral rod 92 to rotate, the spiral rod 92 rotates and pushes the sediment stones in the sewage storage pipe 6 into the drain pipe 7 and is discharged along the drain pipe 7, further effectively cleaning out the sediment stones in the sewage storage pipe 6, avoiding the blockage of the drain pipe 3 caused by the sediment stones accumulated in the drain pipe 3, further improving the drainage efficiency of the drain pipe 3 after the drainage is finished, the worker turns off the motor 81.

Example 2: on the basis of embodiment 1, as shown in fig. 4-8, the device further comprises a impurity removing component, the impurity removing component is arranged on the drain pipe 3, the impurity removing component comprises a impurity removing pipe 101, the impurity removing pipe 101 is connected to the protective shell 2 through a bolt, the drain pipe 3 is communicated with the impurity removing pipe 101, a second filter screen 102 is fixedly connected to the inner wall of the drain pipe 3, the lower portion of the second filter screen 102 is connected with a guide ring 103 through a bolt, a push plate 104 is rotatably connected to the second filter screen 102, the push plate 104 is in contact with the inner wall of the drain pipe 3, the bottom end of the push plate 104 is connected with a gear ring 105 through a flat key, a vertical rod 106 is rotatably connected to the protective shell 2, the bottom end of the vertical rod 106 is connected with a bevel gear 107 through a flat key, the upper ends of the scraping frame 82 are also meshed with the bevel gears 107 through flat keys, the upper ends of the bevel gears 108 are meshed with the gear ring 105.

Initially, the second filter screen 102 will perform preliminary filtration on the sewage in the drain pipe 3, the scraping frame 82 rotates to drive one of the bevel gears 107 to rotate, one of the bevel gears 107 rotates to drive the other bevel gear 107 to rotate, the other bevel gear 107 rotates to drive the vertical rod 106 to rotate, the vertical rod 106 rotates to drive the straight gear 108 to rotate, and then the gear ring 105 is driven to rotate, the gear ring 105 rotates to drive the push plate 104 to rotate, the push plate 104 rotates to push the silt stone accumulated on the second filter screen 102 into the impurity removing pipe 101, and the silt stone in the sewage is discharged along the impurity removing pipe 101, so that the silt stone in the sewage can be further filtered and removed, the filtered silt stone in the drain pipe 3 is sufficiently removed, and the smooth drainage of the drain pipe 3 is further ensured.

Example 3: on the basis of embodiment 2, as shown in fig. 1-6, the anti-blocking device is further included, the anti-blocking device is disposed on the protective housing 2, the anti-blocking device includes a cover plate 111, the cover plate 111 is rotatably connected to the upper portion of the protective housing 2, the cover plate 111 contacts with the drain cover 4, a plurality of strip-shaped grooves are formed in the cover plate 111, a torsion spring 112 is connected between the cover plate 111 and the protective housing 2, a compression bar 113 is slidably connected to the protective housing 2, the cover plate 111 penetrates through the compression bar 113, a small ball is disposed at the bottom end of the compression bar 113, a cylindrical rod is disposed in the middle of the compression bar 113, a return spring 114 is connected between the compression bar 113 and the protective housing 2, a rotation plate 115 is connected to the vertical rod 106 through a bolt, an arc-shaped triangular block is disposed at the bottom of the rotation plate 115, and the rotation plate 115 is located above the small ball of the compression bar 113.

The vertical rod 106 rotates and drives the rotating plate 115 to rotate, the rotating plate 115 rotates to push the pressing rod 113 to move downwards firstly, the reset spring 114 is compressed, the pressing rod 113 moves downwards to drive the cover plate 111 to swing upwards, the torsion spring 112 is twisted, the cover plate 111 swings to bounce off large-particle stones and the like on the cover plate 111, and further the large-particle stones and the like are prevented from blocking the cover plate 111, the drainage efficiency of the device is further affected, the pressing rod 113 is not pushed to move downwards by continuing to rotate, the reset spring 114 resets and drives the pressing rod 113 to move upwards, the pressing rod 113 moves upwards and does not drive the cover plate 111 to swing, at the moment, the torsion spring 112 resets and drives the cover plate 111 to reset, the cover plate 111 is intermittently driven to swing, and the large-particle stones and the like on the cover plate 111 are timely cleaned, so that the drainage smoothness is more fully guaranteed.

Example 4: on the basis of embodiment 3, as shown in fig. 5-7, the device further comprises a material passing plate 121, wherein the material passing plate 121 is slidably connected to the impurity removing pipe 101, a guide rod 122 is connected to the material passing plate 121 through a bolt, and the guide rod 122 is slidably connected with a cylindrical rod on the pressure rod 113.

The novel scraping device further comprises a brush frame 13, wherein the brush frame 13 is fixedly connected to the scraping frame 82, and the brush frame 13 is in contact with the first filter screen 88.

The rotating plate 115 rotates to drive the pressing rod 113 to reciprocate up and down, the pressing rod 113 reciprocates up and down to drive the guide rod 122 and the material passing plate 121 to reciprocate up and down, and the material passing plate 121 reciprocates up and down to remove the silt and stone in the impurity discharging pipe 101, so that the impurity discharging pipe 101 can be kept smooth, and the impurity discharging pipe 101 is prevented from being blocked to influence the drainage efficiency, so that the drainage efficiency of the device is effectively guaranteed.

The scraping frame 82 rotates to drive the brush frame 13 to rotate, and the brush frame 13 rotates to scrape the first filter screen 88, so that sediment, dirt and the like attached to the first filter screen 88 are scraped clean.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a municipal works construction drainage device, characterized by, including bottom plate (1), fixedly connected with protective housing (2) on bottom plate (1), fixedly connected with drain pipe (3) on protective housing (2), drain pipe (3) are "L" shape structure, protective housing (2) top fixedly connected with drain cover (4), drain cover (4) are located the upper end of drain pipe (3), drain pipe (3) lower part intercommunication has a dirt storage tube (6), dirt storage tube (6) are "U" shape structure, just dirt storage tube (6) are located protective housing (2) are inside, the last intercommunication of dirt storage tube (6) has drain (7), drain (7) with protective housing (2) fixedly connected with, be equipped with the clearance subassembly on protective housing (2), the clearance subassembly be used for with drain pipe (3) lower part inner wall is clean, be equipped with the clearance subassembly on the clearance subassembly, the clearance subassembly is used for with dirt in drain tube (3) is discharged.

2. The municipal works construction drainage device of claim 1, characterized in that, clearance subassembly is including motor (81), motor (81) fixed connection is in inside protective housing (2), fixedly connected with scrapes movable frame (82) on the output shaft of motor (81), scrape and be equipped with three scraper blade on movable frame (82), scrape movable frame (82) with drain pipe (3) rotary type is connected, scrape three scraper blade of movable frame (82) all with drain pipe (3) inner wall contact, fixedly connected with horizontal pole (83) on drain pipe (3) inner wall, horizontal pole (83) with scrape movable frame (82) rotary type and be connected, fixedly connected with fluted disc (84) on horizontal pole (83), scrape movable frame (82) upper rotary type and be connected with three dwang (85), every dwang (85) are close to scrape movable frame's (82) one end all fixedly connected with passive gear (86), every passive gear (86) all with drain pipe (3) inner wall (88) all have a fixed connection with drain pipe (87) inner wall, every brush (87) all is connected with drain pipe (3) inner wall.

3. The municipal works construction drainage device according to claim 2, characterized in that, the blowdown subassembly is including drive gear (91), drive gear (91) fixed connection is in scrape on moving frame (82), rotationally be connected with hob (92) on protective housing (2), hob (92) with hold dirty tub (6) rotation type and be connected, hob (92) pass blow off tub (7), one side fixedly connected with rotation gear (93) that hob (92) is close to motor (81), drive gear (91) with rotation gear (93) meshing, fixedly connected with arc baffle (94) are kept away from to hob (92) one end on motor (81), the inner wall fixedly connected with closing plate (95) of blow off tub (7), closing plate (95) with arc baffle (94) contact.

4. The municipal works construction drainage device of claim 3, characterized by, still including edulcoration subassembly, the edulcoration subassembly is established on drain pipe (3), the edulcoration subassembly is including arranging miscellaneous pipe (101), arrange miscellaneous pipe (101) fixed connection and be in on protective housing (2), drain pipe (3) with arrange miscellaneous pipe (101) intercommunication, fixedly connected with filter screen two (102) on drain pipe (3) inner wall, filter screen two (102) lower part fixedly connected with guide ring (103), rotationally be connected with push pedal (104) on filter screen two (102), push pedal (104) with drain pipe (3) inner wall contact, push pedal (104) bottom fixedly connected with gear ring (105), rotationally be connected with montant (106) in protective housing (2), montant (106) bottom fixedly connected with bevel gear (107), also fixedly connected with bevel gear (107) on scraping movable frame (82), two bevel gears (107) mesh, upper end fixedly connected with gear ring (108), montant (108) mesh.

5. The municipal works construction drainage device of claim 4, further comprising an anti-blocking component, wherein the anti-blocking component is arranged on the protective housing (2), the anti-blocking component comprises a cover plate (111), the cover plate (111) is rotatably connected to the upper portion of the protective housing (2), the cover plate (111) is in contact with the drainage cover (4), a plurality of strip-shaped grooves are formed in the cover plate (111), torsion springs (112) are connected between the cover plate (111) and the protective housing (2), a pressing rod (113) is connected to the protective housing (2) in a sliding mode, the cover plate (111) penetrates through the pressing rod (113), a small ball is arranged at the bottom end of the pressing rod (113), a cylindrical rod is arranged in the middle of the pressing rod (113), a reset spring (114) is connected between the pressing rod (113) and the protective housing (2), a rotating plate (115) is fixedly connected to the vertical rod (106), and an arc triangular block is arranged at the bottom of the rotating plate (115), and the rotating plate (115) is located above the small ball.

6. The municipal works construction drainage device of claim 5, further comprising a material passing plate (121), wherein the material passing plate (121) is slidably connected to the impurity discharging pipe (101), a guide rod (122) is fixedly connected to the material passing plate (121), and the guide rod (122) is slidably connected to the cylindrical rod on the compression rod (113).

7. The municipal works construction drainage device according to claim 6, further comprising a brush frame (13), wherein the brush frame (13) is fixedly connected to the scraping frame (82), and the brush frame (13) is in contact with the first filter screen (88).