CN219528300U

CN219528300U - Wall scraping mechanism for building construction

Info

Publication number: CN219528300U
Application number: CN202320562617.7U
Authority: CN
Inventors: 赵闪闪; 汪晶; 袁二娟; 孙小娟; 薛盼; 叶蕾
Original assignee: Pingmei Shenma Construction and Engineering Group Co Ltd
Current assignee: Pingmei Shenma Construction and Engineering Group Co Ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-08-15
Anticipated expiration: 2033-03-21

Abstract

The utility model relates to the technical field of building construction, in particular to a wall scraping mechanism for building construction, which comprises two symmetrical pipe bodies, wherein the two pipe bodies are of a bottom opening structure, the bottoms of the two pipe bodies are provided with fixing mechanisms, one side of each pipe body is provided with a scraping mechanism, the scraping mechanism is provided with a cleaning mechanism, and the scraping mechanism comprises two L-shaped plates. According to the utility model, the two pipe bodies are pulled and placed on one side of the wall surface, the two U-shaped rods are rotated, the U-shaped rods and the guide rods are clamped into the adjacent embedded holes to fix the positions of the scraping plates, the driving motor is started again to drive the rubbing roller to rotate, so that the two driving endless belts pull the scraping plates to move, smooth and straight scraping is carried out on materials sprayed on the wall surface, the scraping plates are driven to automatically separate from the wall surface when the two sleeves move from one side of the driving endless belts to the other side, the scraping process is completed, the scraping process is more stable and automatic, and the whole device is convenient to store and carry.

Description

Wall scraping mechanism for building construction

Technical Field

The utility model relates to the technical field of building construction, in particular to a wall scraping mechanism for building construction.

Background

The construction of the wall surface is common in the construction of the building, generally comprises the construction of puttying, emulsion paint and the like, the paint liquid or the wall surface protective paint needs to be manually putted to be leveled, the puttying is carried out in a filling or integral treatment mode, the uneven part of the surface of a base layer is removed, the leveling and smoothness of the wall surface are maintained, the most important steps in the base layer treatment are realized, in the process of puttying, most of the construction is carried out manually by the aid of a manual operation, the manual puttying by the aid of a scraper is needed, and in the general manual puttying, the puttying can not be carried out in the putted place again, because the length of the scraper or the scraper is limited, the puttying is carried out once again, the problem of hand feeling of a user is excessively light, the edge of the scraper is puttying, the manual construction of the user is relatively inconvenient, the efficiency is low, in addition, when the puttying is carried out by a new hand with partial experience, the scraping is easily excessively heavy or light, the scraping can not smoothly, and the attractiveness is affected, and the manual scraping is inconvenient.

Disclosure of Invention

In order to overcome the technical problems, the utility model aims to provide a wall scraping mechanism for building construction, which is characterized in that two pipe bodies are pulled and placed on one side of a wall, then two U-shaped rods are rotated, the U-shaped rods and guide rods are clamped into adjacent embedded holes to fix the positions of scraping plates, a driving motor is started to drive a rubbing roller to rotate, two transmission endless belts pull the scraping plates to move, smooth and straight scraping is carried out on materials sprayed on the wall, and the scraping plates are driven to automatically separate from the wall when two sleeves move from one side of the transmission endless belts to the other side, so that the scraping process is completed, the scraping process is more stable, the automatic operation is carried out, and the whole storage and the carrying are convenient.

The aim of the utility model can be achieved by the following technical scheme:

the wall scraping mechanism for the building construction comprises two symmetrical pipe bodies, wherein the two pipe bodies are of bottom opening structures, the bottom ends of the two pipe bodies are provided with fixing mechanisms, one side of each pipe body is provided with a scraping mechanism, and the scraping mechanism is provided with a cleaning mechanism;

the scraping mechanism comprises two L-shaped plates, guide grooves are formed in the adjacent inner side walls of the two L-shaped plates, two clamping strips are fixedly connected to one sides of the pipe body in a deviating mode and are respectively connected to the inner portions of the two guide grooves in a sliding mode, two connecting plates are fixedly connected to two ends of one side of the L-shaped plates respectively, rotating rollers are respectively connected to the adjacent sides of the two connecting plates on the same L-shaped plate in a rotating mode, a transmission annular belt is sleeved between the outer side walls of the two parallel rotating rollers and is respectively connected to the outer side walls of the two transmission annular belts in a rotating mode, a scraping plate is arranged between the two transmission annular belts, inserting rods are fixedly connected to the two ends of the scraping plates respectively in a rotating mode, and the inserting rods are respectively sleeved inside the two sleeves.

The method is further characterized in that: the device comprises an L-shaped plate, a rubbing roller, a driving motor, a motor shaft, a driving ring belt, a rotating rod, connecting rods and connecting rods, wherein the rubbing roller is rotatably connected between two connecting plates on the L-shaped plate, the bottom end of the rubbing roller is provided with the driving motor, the driving motor is fixedly connected with the side wall of the adjacent connecting plate, the motor shaft of the driving motor penetrates through the side wall of the adjacent connecting plate and is fixedly connected with the bottom end of the rubbing roller, the outer side wall of the driving ring belt is in contact with the outer side wall of the rubbing roller, the rotating rods are rotatably connected to one side of the adjacent pipe, the connecting rods are arranged between the two rotating rods, and two ends of each connecting rod are rotatably connected with one ends of the two rotating rods respectively.

The method is further characterized in that: threaded holes are formed in the tops of the inner walls of the guide grooves, and the inner side walls of the two threaded holes are screwed with abutting bolts.

The method is further characterized in that: two all rotate and be connected with the butt plate of butt bolt one end, and two butt plates all slide joint in adjacent guide way inside, two butt plates all contradict with adjacent card strip activity.

The method is further characterized in that: two equal fixedly connected with U template of lateral wall of L template, and the equal rotation in the relative both sides of two U template arms is connected with the baffle, two L template one side all is provided with the U type pole, and two U type pole one arm all rotate with adjacent one L template one side and be connected, two the U type pole uses the center between two L templates to arrange as the central point diagonal angle, two the other arm of U type pole respectively movable joint between two U type board two arms, the spout has all been seted up at the scraper blade both ends, and two inside equal sliding joint of spout have the slider, two the embedding hole has all been seted up to slider one end, two equal fixedly connected with guide arm between the U type pole two arms, inside two embedding holes of same one end of respectively movable embedding scraper blade of same U type pole and adjacent guide arm.

The method is further characterized in that: the fixing mechanism comprises hydraulic rods, the movable ends of the hydraulic rods penetrate through the bottom ends of the adjacent pipes and are fixedly connected with the inner top surfaces of the adjacent pipes, and rubber pads are fixedly connected to the top ends of the two pipes and the bottom ends of the two hydraulic rods.

The method is further characterized in that: the cleaning mechanism comprises two roller bodies, the two roller bodies are all rotationally connected between two connecting plates on another L-shaped plate, a driving motor is arranged at the bottom end of one roller body and fixedly connected with the side wall of the adjacent connecting plate, the motor end of the driving motor penetrates through the side wall of the adjacent connecting plate and is fixedly connected with the bottom end of one roller body, a wiping annular belt is rotationally sleeved between the outer side walls of the two roller bodies, a scraping strip is fixedly connected to one side of the other L-shaped plate, and the scraping strip is contacted with the outer side wall of the wiping annular belt.

The utility model has the beneficial effects that:

through pulling out two body and placing in wall one side, make two drive endless belts tighten, rotate two U type poles then, make U type pole and guide arm card go into adjacent downthehole portion of inlaying, fixed scraper blade position, start driving motor drive rub the roll with hands and rotate then, make rub the roll and drive two drive endless belts and pull the scraper blade and remove, carry out steady straight scraping to the material of wall spraying, remove the opposite side from drive endless belt one side after the scraper blade removes certain distance, make the scraper blade break away from the wall voluntarily, thereby accomplish the scraping process, make the scraping process more steady, and automatic going on, and whole be convenient for accomodate the transport.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the scraping mechanism and the fixing mechanism in the present utility model;

FIG. 3 is an enlarged view of a portion of the utility model at A;

FIG. 4 is an exploded view of the structure of the scraping mechanism of the present utility model;

FIG. 5 is an enlarged view of a portion of the utility model at B;

FIG. 6 is an exploded view of the cleaning mechanism of the present utility model.

In the figure: 100. a tube body; 110. a rotating rod; 120. a connecting rod; 130. clamping strips; 200. a fixing mechanism; 210. a hydraulic rod; 220. a rubber pad; 300. a scraping mechanism; 301. a contact bolt; 302. a retaining plate; 310. an L-shaped plate; 311. a guide groove; 312. a threaded hole; 313. a connecting plate; 320. a rotating roller; 330. a drive belt; 331. a sleeve; 340. a U-shaped rod; 341. a guide rod; 350. a U-shaped plate; 351. a baffle; 360. a scraper; 361. a rod; 362. a chute; 370. a driving motor; 371. a rubbing roller; 380. a slide block; 381. embedding holes; 400. a cleaning mechanism; 410. a roller body; 420. wiping the endless belt; 430. a drive motor; 440. scraping the strip.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model discloses a wall scraping mechanism for building construction, which is shown in fig. 1-6, and comprises two symmetrical pipe bodies 100, wherein the two pipe bodies 100 are of a bottom opening structure, the bottom ends of the two pipe bodies 100 are provided with fixing mechanisms 200, one side of each pipe body 100 is provided with a scraping mechanism 300, and the scraping mechanism 300 is provided with a cleaning mechanism 400;

the scraping mechanism 300 comprises two L-shaped plates 310, wherein a guide slot 311 is formed in each of the adjacent inner side walls of the two L-shaped plates 310, clamping bars 130 are fixedly connected to opposite sides of the two pipe bodies 100, the two clamping bars 130 are respectively and slidably clamped in the two guide slots 311, connecting plates 313 are fixedly connected to two ends of one side of the two L-shaped plates 310, rotating rollers 320 are rotatably connected to adjacent sides of the two connecting plates 313 on the same L-shaped plate 310, transmission ring belts 330 are rotatably sleeved between the outer side walls of the two parallel rotating rollers 320 on the two L-shaped plates 310, sleeves 331 are fixedly connected to the outer side walls of the two transmission ring belts 330, scraping plates 360 are arranged between the two transmission ring belts 330, inserting rods 361 are fixedly connected to two ends of each scraping plates 360, the two inserting rods 361 are rotatably sleeved in the two sleeves 331 respectively, the two pipe bodies 100 are placed on a wall surface, then a user draws a proper horizontal line on the ground, places the two pipe bodies 100 on the horizontal line by using the fixing mechanism 200, then sprays materials to be scraped such as putty, paint liquid and the like on the wall by using the user, the top ends of the inner walls of the two guide grooves 311 are provided with threaded holes 312, the inner side walls of the two threaded holes 312 are screwed with the abutting bolts 301, one ends of the two abutting bolts 301 are rotationally connected with the abutting plates 302, the two abutting plates 302 are slidably clamped in the adjacent guide grooves 311, the two abutting plates 302 are movably abutted against the adjacent clamping strips 130, then the user scrapes the materials according to the requirements, slides the two L-shaped plates 310, rotates the abutting bolts 301, and enables the two abutting plates 302 to abut against the adjacent clamping strips 130 to fix the positions of the two L-shaped plates 310, so that the user can adjust the scraping heights, and the contact area between the abutting bolts 301 and the clamping strips 130 can be increased by using the abutting plates 302, in the initial position, the scraping plate 360 is positioned at one side of the two transmission endless belts 330, a rubbing roller 371 is rotatably connected between the two connecting plates 313 on one L-shaped plate 310, the bottom end of the rubbing roller 371 is provided with a driving motor 370, the driving motor 370 is fixedly connected with the side wall of the adjacent connecting plate 313, the motor shaft of the driving motor 370 penetrates through the side wall of the adjacent connecting plate 313 and is fixedly connected with the bottom end of the rubbing roller 371, the outer side walls of the two transmission endless belts 330 are contacted with the outer side wall of the rubbing roller 371, the adjacent sides of the two pipe bodies 100 are rotatably connected with the rotating rods 110, a connecting rod 120 is arranged between the two rotating rods 110, the two ends of the connecting rod 120 are rotatably connected with one ends of the two rotating rods 110 respectively, the rubbing roller 371 clamps the two transmission endless belts 330 with the two adjacent rotating rollers 320, then when the rubbing roller 371 is driven to rotate by the driving motor 370, the rubbing roller 371 rubs the two transmission endless belts 330 to synchronously rotate, then the two transmission endless belts 330 are rotated to scrape the scraping plate 360 in one direction, then when the two sleeves 331 drive the scraping plate 360 to move to the other side of the two transmission endless belts 330, the scraping plate 360 is separated from the wall surface, so that the scraping process can be automatically carried out, convenience is brought to a user, and when the scraping is carried out, the scraping plate 360 is always scraped in one direction, the scraping plate is not easy to reciprocate, the wall surface is caused to have scraping signs, and the two rotating rods 110 and the connecting rods 120 can limit that the two pipe bodies 100 are always in a parallel state, so that a user can conveniently arrange the positions of the two pipe bodies 100.

The outer side walls of the two L-shaped plates 310 are fixedly connected with the U-shaped plates 350, the two opposite sides of one arm of the two U-shaped plates 350 are rotationally connected with the baffle 351, one side of the two L-shaped plates 310 is provided with the U-shaped rods 340, one arm of the two U-shaped rods 340 is rotationally connected with one side of the adjacent L-shaped plates 310, the two U-shaped rods 340 are diagonally arranged by taking the center between the two L-shaped plates 310 as a center point, the other arm of the two U-shaped rods 340 is movably clamped between the two arms of the two U-shaped plates 350 respectively, the two ends of the scraping plate 360 are provided with the sliding grooves 362, the inside of the two sliding grooves 362 is slidably clamped with the sliding blocks 380, one ends of the two sliding blocks 380 are provided with the embedded holes 381, the two arms of the two U-shaped rods 340 are fixedly connected with the guide rods 341, the same U-shaped rod 340 and the adjacent guide rods 341 are movably embedded into the embedded holes 381 at the same end of the scraping plate 360 respectively when in use, the two U-shaped rods 340 are rotated to enable the two U-shaped rods 340 to be arranged in parallel, the other arm of the two U-shaped rods 340 is clamped between the two arms of the U-shaped plate 350 on the non-adjacent L-shaped plate 310, then the two baffles 351 are rotated to fix the positions of the two U-shaped rods 340, the cross bars on the two U-shaped rods 340 and the two guide rods 341 are embedded into the embedded holes 381 on the four sliding blocks 380, the two U-shaped rods 340 and the guide rods 341 are utilized to limit the scraping plate 360, the scraping plate 360 always keeps a vertical state, when the scraping plate 360 scrapes, the scraping plate 360 can move smoothly and smoothly to scrape materials sprayed on a wall surface, the scraping plate can be imitated to be manually scraped off the wall surface after a certain distance is scraped, the influence on the scraped wall surface is avoided, then the two L-shaped plates 310 are repositioned to brush other wall surface parts, the two pipe bodies 100 are moved to the position, the other wall surfaces are scraped, finally, the user manually scrapes the repair on the area which is not scraped by the other scraper 360.

The fixing mechanism 200 comprises hydraulic rods 210, the movable ends of the hydraulic rods 210 penetrate through the bottom ends of the adjacent pipe bodies 100 and are fixedly connected with the inner top surfaces of the adjacent pipe bodies 100, rubber pads 220 are fixedly connected to the top ends of the two pipe bodies 100 and the bottom ends of the two hydraulic rods 210, the two hydraulic rods 210 are synchronously started to lift through a one-to-two controller, the bottom ends of the two hydraulic rods 210 are abutted against the ground, the movable ends are abutted against the pipe bodies 100 to be fixed by abutting against the ceilings, and the fixing of the positions of the two pipe bodies 100 by a user is facilitated.

The cleaning mechanism 400 includes two roller bodies 410, two roller bodies 410 are all connected between two connecting plates 313 on another L-shaped plate 310 in a rotating way, wherein a driving motor 430 is arranged at the bottom end of one roller body 410, the driving motor 430 is fixedly connected with the side wall of the adjacent connecting plate 313, the motor end of the driving motor 430 penetrates through the side wall of the adjacent connecting plate 313 and is fixedly connected with the bottom end of one roller body 410, a wiping ring belt 420 is sleeved between the outer side walls of the two roller bodies 410 in a rotating way, a scraping strip 440 is fixedly connected to one side of the other L-shaped plate 310, the scraping strip 440 is contacted with the outer side wall of the wiping ring belt 420, the wiping ring belt 420 is driven to rotate by starting the driving motor 430, after the scraping strip 360 is separated from the wall, the scraping strip 360 can be contacted with the wiping ring belt 420, redundant materials adhered to one side of the scraping ring belt 360 can be scraped by the scraping strip 440, and during storage, the two U-shaped rods 340 can be rotated away from the adjacent embedded holes 381, and then the two U-shaped rods 340 are pushed to be close to each other, so that users can store the two U-shaped rods 340 and carry the two U-shaped rods 100 conveniently.

Working principle: a user draws a proper horizontal line on the ground, pulls the two pipe bodies 100 away from each other, tightens the two transmission ring belts 330, sets a two-to-one controller on the side wall of the pipe body 100 to synchronously control the opening and closing of the two hydraulic rods 210, starts the two hydraulic rods 210, enables the bottom ends of the two hydraulic rods 210 to prop against the ground, enables the movable ends to prop against the pipe bodies 100 to prop against the ceiling for fixing, sprays putty, paint liquid and other materials to be scraped on the wall by the user, and then slides the two L-shaped plates 310 according to the scraping height of the user, rotates the prop bolts 301, enables the two prop plates 302 to prop against the adjacent clamping strips 130 to fix the positions of the two L-shaped plates 310;

the two U-shaped rods 340 are rotated again, the two U-shaped rods 340 are arranged in parallel, the other arm of the two U-shaped rods 340 is clamped between the two arms of the U-shaped plates 350 on the non-adjacent L-shaped plates 310, then the two baffles 351 are rotated to fix the positions of the two U-shaped rods 340, the cross bars on the two U-shaped rods 340 and the two guide rods 341 are embedded into the embedded holes 381 on the four sliding blocks 380, the driving motor 370 is started to drive the rubbing roller 371 to rotate, the rubbing roller 371 rubs the two transmission annular belts 330 to synchronously rotate, then the two transmission annular belts 330 are rotated, the scraping plate 360 is enabled to scrape in one direction, then when the two sleeves 331 drive the scraping plate 360 to move to the other side of the two transmission annular belts 330, the scraping plate 360 is separated from a wall surface, the driving motor 430 is started to drive the rubbing annular belts 420 to rotate, after the scraping plate 360 is separated from the wall surface, the scraping plate 360 can be contacted with the rubbing annular belts 420, the redundant materials adhered to one side of the scraping annular belts 360 are scraped by the scraping strips 440, then the two L-shaped plates 310 are repositioned, the two L-shaped plates 100 are scraped by the scraping strips, and then other parts of the other manually-shaped plates are removed by the other manually, and the other hand-shaped plates are not scraped by the scraping areas.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative and explanatory of the utility model, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the utility model or exceeding the scope of the utility model as defined in the claims.

Claims

1. The wall scraping mechanism for the building construction comprises two symmetrical pipe bodies (100), and is characterized in that the two pipe bodies (100) are of a bottom opening structure, the bottom ends of the two pipe bodies (100) are provided with fixing mechanisms (200), one side of each pipe body (100) is provided with a scraping mechanism (300), and the scraping mechanism (300) is provided with a cleaning mechanism (400);

the scraping mechanism (300) comprises two L-shaped plates (310), guide grooves (311) are formed in adjacent inner side walls of the two L-shaped plates (310), two clamping strips (130) are fixedly connected to opposite sides of the pipe body (100), the two clamping strips (130) are respectively and slidably clamped inside the two guide grooves (311), two connecting plates (313) are fixedly connected to two ends of one side of the L-shaped plates (310), rotating rollers (320) are respectively and rotatably connected to adjacent sides of the two connecting plates (313) on the same L-shaped plate (310), a transmission annular belt (330) is rotatably sleeved between outer side walls of the two rotating rollers (320) which are respectively and parallelly arranged on the two L-shaped plates (310), sleeves (331) are fixedly connected to outer side walls of the two transmission annular belts (330), a scraper (360) is arranged between the two transmission annular belts (330), two ends of the scraper (360) are respectively and fixedly connected with inserting rods (361), and the two inserting rods (361) are respectively and rotatably sleeved inside the two sleeves (331).

2. The wall scraping mechanism for building construction according to claim 1, wherein a rubbing roller (371) is rotatably connected between two connecting plates (313) on one L-shaped plate (310), a driving motor (370) is arranged at the bottom end of the rubbing roller (371), the driving motor (370) is fixedly connected with the side wall of the adjacent connecting plate (313), a motor shaft of the driving motor (370) penetrates through the side wall of the adjacent connecting plate (313) and is fixedly connected with the bottom end of the rubbing roller (371), the outer side walls of the two transmission endless belts (330) are contacted with the outer side wall of the rubbing roller (371), rotating rods (110) are rotatably connected to the adjacent sides of the two pipe bodies (100), and connecting rods (120) are arranged between the two rotating rods (110), and two ends of each connecting rod (120) are rotatably connected with one ends of the two rotating rods (110).

3. The wall scraping mechanism for building construction according to claim 1, wherein threaded holes (312) are formed in the top ends of the inner walls of the two guide grooves (311), and the inner side walls of the two threaded holes (312) are screwed with the abutting bolts (301).

4. A wall scraping mechanism for building construction according to claim 3, wherein one end of each of the two abutting bolts (301) is rotatably connected with a abutting plate (302), the two abutting plates (302) are slidably clamped in the adjacent guide grooves (311), and the two abutting plates (302) are movably abutted against the adjacent clamping strips (130).

5. The wall scraping mechanism for building construction according to claim 2, wherein two outer side walls of the L-shaped plates (310) are fixedly connected with the U-shaped plates (350), two opposite sides of one arm of the two U-shaped plates (350) are rotatably connected with the baffle plates (351), two sides of the L-shaped plates (310) are provided with the U-shaped rods (340), one arm of the two U-shaped rods (340) is rotatably connected with one side of the adjacent L-shaped plate (310), the two U-shaped rods (340) are diagonally arranged by taking the center between the two L-shaped plates (310) as a center point, the other arm of the two U-shaped rods (340) is movably clamped between the two arms of the two U-shaped plates (350), sliding grooves (362) are formed in two ends of the scraping plate (360), sliding blocks (380) are slidably clamped inside the two sliding blocks (381), two guide rods (341) are fixedly connected between the two arms of the two U-shaped rods (340), and the same guide rods (340) are embedded into the two adjacent movable ends of the scraping plate (381) respectively.

6. The wall scraping mechanism for building construction according to claim 1, wherein the fixing mechanism (200) comprises a hydraulic rod (210), the movable end of the hydraulic rod (210) penetrates through the bottom end of the adjacent pipe body (100) and is fixedly connected with the inner top surface of the adjacent pipe body (100), and rubber pads (220) are fixedly connected to the top ends of the two pipe bodies (100) and the bottom ends of the two hydraulic rods (210).

7. The wall scraping mechanism for building construction according to claim 5, wherein the cleaning mechanism (400) comprises two roller bodies (410), the two roller bodies (410) are both rotatably connected between two connecting plates (313) on the other L-shaped plate (310), a driving motor (430) is arranged at the bottom end of one roller body (410), the driving motor (430) is fixedly connected with the side wall of the adjacent connecting plate (313), the motor end of the driving motor (430) penetrates through the side wall of the adjacent connecting plate (313) and is fixedly connected with the bottom end of one roller body (410), a wiping ring belt (420) is rotatably sleeved between the outer side walls of the two roller bodies (410), a scraping strip (440) is fixedly connected to one side of the other L-shaped plate (310), and the scraping strip (440) is contacted with the outer side wall of the wiping ring belt (420).