Screen cloth vacuum cleaning device for filter paper production

Abstract

The invention provides a screen cloth vacuum cleaning device for filter paper production, and belongs to the technical field of papermaking. The first cleaning scraping plate is fixedly connected with the rack and abuts against the working face; the cleaning brush roller is rotationally connected with the rack and is positioned at the downstream of the first cleaning scraper; the peripheral surface of the cleaning brush roller is propped against the working surface; the cleaning brush roller rotates in the direction opposite to the advancing direction of the screen cloth. And the cleaning spray head is fixedly connected with the rack and located above the cleaning brush roller, and the water outlet end of the cleaning spray head faces the non-working face so that water flow can penetrate through the screen cloth and flow to the cleaning brush roller. According to the screen cloth vacuum cleaning device for filter paper production, when the cleaning brush roller brushes the screen cloth, the cleaning spray head flushes the screen cloth, meshes of the screen cloth can be further cleaned, and impurities in the meshes are flushed out more thoroughly.

Description

Technical Field

[0001] The invention belongs to the technical field of papermaking, and more specifically, relates to a vacuum cleaning device for mesh cloth used in filter paper production. Background Art

[0002] In the filter paper production industry, the inclined wire paper machine is a key equipment required for production, and the mesh plays a decisive role in the formation and quality of filter paper. In the papermaking process, the headbox sprays the evenly dispersed pulp onto the mesh in continuous circulation. The fibers in the pulp gradually deposit on the surface of the mesh, and the water is continuously filtered out through the mesh holes of the mesh, so that the pulp initially forms wet paper sheets. This makes it inevitable that the mesh will absorb a large amount of impurities such as pulp fibers, fillers, resins, etc. If these impurities are not cleaned up in time, the dehydration performance and air permeability of the mesh will be seriously affected, which will lead to quality problems such as poor uniformity, uneven thickness, and reduced strength of the paper.

[0003] At present, the main cleaning method for inclined wire paper machine mesh is high-pressure water washing. After the wet paper sheet on the mesh is separated from the mesh, the mesh continues to move to the bottom of the inclined wire paper machine. At this time, the contact surface between the mesh and the pulp faces downward, and the nozzle of the high-pressure water nozzle faces upward to wash the contact surface between the mesh and the pulp. Although this cleaning method can remove some impurities on the surface of the mesh, it is not effective in cleaning stubborn impurities deep in the mesh and inside the mesh. Summary of the invention

[0004] The purpose of the present invention is to provide a vacuum cleaning device for mesh cloth used in filter paper production, aiming at improving the cleaning effect of the mesh cloth.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a vacuum cleaning device for mesh cloth used for filter paper production, which is used to clean the mesh cloth, wherein the mesh cloth has a downward working surface and an upward non-working surface, wherein the working surface is the surface of the mesh cloth in contact with the pulp, and comprises: A frame, arranged on a travel path of the mesh; A first cleaning scraper, fixedly connected to the frame and resting against the working surface; a cleaning brush roller, rotatably connected to the frame and located downstream of the first cleaning scraper; the outer peripheral surface of the cleaning brush roller abuts against the working surface; the cleaning brush roller rotates in the opposite direction of the travel direction of the mesh cloth; and A cleaning nozzle is fixedly connected to the frame and is located above the cleaning brush roller. The water outlet end of the cleaning nozzle faces the non-working surface so that water flows through the mesh and flows toward the cleaning brush roller.

[0006] In a possible implementation, a second cleaning scraper is fixedly connected to the first cleaning scraper, and the second cleaning scraper has comb teeth extending toward the cleaning brush roller, and the comb teeth extend into the bristles of the cleaning brush roller. When the cleaning brush roller rotates, the comb teeth clean the attachments on the bristles and squeeze out the moisture on the bristles.

[0007] In a possible implementation, a plurality of second cleaning scrapers are provided along the height direction of the first cleaning scraper, and the comb teeth on each adjacent two second cleaning scrapers are staggered with each other.

[0008] In a possible implementation, the second cleaning scraper is gradually tilted downward along the direction from the cleaning brush roller to the first cleaning scraper, and a through hole is provided on the first cleaning scraper, and the through hole is used for attachments on the second cleaning scraper to pass through under the action of water flow.

[0009] In a possible implementation, a third cleaning scraper is slidably provided on the frame along the axial direction of the cleaning brush roller, and the third cleaning scraper abuts against a side of the first cleaning scraper facing away from the second cleaning scraper; The frame is provided with a reciprocating assembly for driving the third cleaning scraper to move back and forth. The reciprocating assembly is connected to the cleaning brush roller through a linkage assembly. When the cleaning brush roller rotates, the reciprocating assembly moves.

[0010] In a possible implementation, the reciprocating assembly includes: A reciprocating screw, rotatably connected to the frame, and having an axial direction that is the same as that of the cleaning brush roller; A guide rod, fixedly connected to the frame, and having an axial direction that is the same as that of the reciprocating screw; The connecting block is fixedly connected to the third cleaning scraper and is respectively threadedly connected to the reciprocating screw and slidably connected to the guide rod.

[0011] In a possible implementation, the linkage component includes: A reducer, fixedly connected to the frame, and an output end of which is connected to the reciprocating screw; A driven pulley, fixedly connected to the input end of the reducer; The driving pulley is fixedly connected to the cleaning brush roller and is connected to the driven pulley through a transmission belt.

[0012] In a possible implementation, pressure rollers are rotatably connected to the frame at both radial sides of the cleaning brush roller; The two pressing rollers are both against the non-working surface, so that the working surface is pressed against the cleaning brush roller; The two pressing rollers rotate in the traveling direction of the mesh cloth.

[0013] In a possible implementation, the cleaning brush roller and the two pressure rollers are driven to rotate by a rotation drive assembly, and the rotation drive assembly includes: A first pulley, fixedly connected to the cleaning brush roller; A second pulley, fixedly connected to any of the pressure rollers, and connected to the first pulley via a first belt; Two third pulleys are respectively fixed on the two pressure rollers and connected via a second belt; the sizes of the two third pulleys are the same as the size of the second pulley; The motor is fixedly connected to the frame, and the output end is connected to the cleaning brush roller.

[0014] In a possible implementation, a vacuum water suction box is fixedly connected to the frame, the vacuum water suction box is located downstream of the cleaning brush roller, and an input end of the vacuum water suction box is attached to the work surface.

[0015] The invention provides a vacuum cleaning device for mesh cloth used in filter paper production. Compared with the prior art, the invention has the following beneficial effects: when the mesh cloth moves on the travel path, the first cleaning scraper can scrape off large pulp fibers, cut waste and other impurities attached to the working surface of the mesh cloth, thereby reducing the burden of the subsequent cleaning process and preparing for the subsequent more detailed cleaning. A large relative speed is generated between the cleaning brush roller and the mesh cloth, thereby enhancing the cleaning ability of the cleaning brush roller on the surface of the mesh cloth and the impurities inside the mesh holes. When the mesh cloth moves, the bristles of the cleaning brush roller can penetrate into the mesh holes of the mesh cloth and brush out stubborn impurities such as fibers and resins remaining in the mesh holes. When the cleaning brush roller brushes the mesh cloth, the water flow sprayed from the cleaning nozzle flows from the non-working surface of the mesh cloth through the mesh holes to the working surface to rinse the mesh cloth, which not only helps to further flush the impurities loosened by the cleaning brush roller away from the mesh cloth, but also can further clean the mesh holes of the mesh cloth and more thoroughly flush out the impurities in the mesh holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 Schematic diagram of a mesh vacuum cleaning device for filter paper production provided in an embodiment of the present invention.

[0018] Figure 2A cross-sectional view of a mesh vacuum cleaning device for filter paper production provided in an embodiment of the present invention.

[0019] Figure 3 A schematic diagram of a first cleaning scraper and a second cleaning scraper provided in an embodiment of the present invention.

[0020] In the figure: 1. frame; 2. mesh; 21. working surface; 22. non-working surface; 31. first cleaning scraper; 311. through hole; 32. second cleaning scraper; 321. comb teeth; 33. third cleaning scraper; 4. cleaning brush roller; 5. cleaning nozzle; 61. reciprocating screw; 62. guide rod; 63. connecting block; 64. reducer; 65. driven pulley; 66. driving pulley; 67. transmission belt; 7. pressure roller; 81. first pulley; 82. second pulley; 83. first belt; 84. third pulley; 85. second belt; 86. motor; 9. vacuum suction box. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] See also Figure 1 and Figure 2 The invention provides a vacuum cleaning device for filter paper production mesh, which is used to clean mesh 2. The mesh 2 has a downward working surface 21 and an upward non-working surface 22. The working surface 21 is the surface of the mesh 2 that contacts the pulp.

[0023] See also Figure 1 and Figure 2 The mesh vacuum cleaning device for filter paper production includes a frame 1, a first cleaning scraper 31, a cleaning brush roller 4 and a cleaning nozzle 5. Among them, the frame 1 is arranged on the travel path of the mesh 2. The first cleaning scraper 31 is fixedly connected to the frame 1 and abuts against the working surface 21. The cleaning brush roller 4 is rotatably connected to the frame 1 and is located downstream of the first cleaning scraper 31. The outer peripheral surface of the cleaning brush roller 4 abuts against the working surface 21. The cleaning brush roller 4 rotates in the opposite direction of the travel direction of the mesh 2. The cleaning nozzle 5 is fixedly connected to the frame 1 and is located above the cleaning brush roller 4. The water outlet end of the cleaning nozzle 5 faces the non-working surface 22, so that the water flows through the mesh 2 and flows to the cleaning brush roller 4.

[0024] It should be noted that the upstream and downstream are sequentially arranged along the moving direction of the mesh cloth 2 , and the cleaning brush roller 4 is arranged behind the first cleaning scraper 31 along the moving direction of the mesh cloth 2 , so that the mesh cloth 2 first passes through the first cleaning scraper 31 and then passes through the cleaning brush roller 4 .

[0025] It should be noted that the direction of the linear velocity of the cleaning brush roller 4 toward one end of the working surface 21 is opposite to the moving direction of the mesh cloth 2 , so that a greater relative velocity is generated between the cleaning brush roller 4 and the mesh cloth 2 .

[0026] When the mesh cloth 2 continues to move driven by the inclined wire papermaking machine, the first cleaning scraper 31 can scrape off larger pulp fibers, cut waste and other impurities attached to the working surface 21 during the movement of the mesh cloth 2, effectively reducing the amount of impurities attached to the surface of the mesh cloth 2 and alleviating the burden for subsequent more in-depth cleaning work.

[0027] The bristles on the cleaning brush roller 4 can penetrate into the mesh holes of the mesh cloth 2 during the relative motion with the mesh cloth 2. When the mesh holes of the mesh cloth 2 are clogged with some fine resin particles or fiber debris, the reversely rotating bristles can brush out these stubborn impurities from the mesh holes by virtue of the friction and extrusion force generated by the relative motion with the mesh cloth 2.

[0028] At the same time, the cleaning nozzle 5 located above the cleaning brush roller 4 sprays water toward the non-working surface 22, and the water flows through the mesh 2 at a certain pressure and flows toward the cleaning brush roller 4. The water flow can not only wash out the impurities hidden deep in the mesh 2, but also moisten the bristles and assist in cleaning when passing through the cleaning brush roller 4. The moistened bristles can better absorb and grab impurities, further improving the cleaning effect.

[0029] In some embodiments, see Figure 2 and Figure 3 A second cleaning scraper 32 is fixedly connected to the first cleaning scraper 31. The second cleaning scraper 32 has comb teeth 321 extending toward the cleaning brush roller 4. The comb teeth 321 extend into the bristles of the cleaning brush roller 4. When the cleaning brush roller 4 rotates, the comb teeth 321 clean the attachments on the bristles and squeeze out the moisture on the bristles.

[0030] When the cleaning brush roller 4 cleans the mesh 2, the bristles will inevitably be attached with some impurities brushed off the mesh 2. When the cleaning brush roller 4 rotates, the comb teeth 321 can clean the impurities attached to the bristles. The cleaning of the comb teeth 321 can keep the bristles clean, ensuring that the cleaning brush roller 4 maintains good cleaning ability during long-term operation.

[0031] During the cleaning process of the cleaning nozzle 5 spraying water to assist cleaning, the bristles will absorb a certain amount of water. During the contact process between the comb teeth 321 and the bristles, the bristles can be squeezed to squeeze out the excess water in the bristles, so that the bristles can better fit the surface and mesh of the mesh 2, thereby enhancing the cleaning effect of impurities.

[0032] In some embodiments, see Figure 2 and Figure 3A plurality of second cleaning scrapers 32 are arranged along the height direction of the first cleaning scraper 31, and the comb teeth 321 on each two adjacent second cleaning scrapers 32 are staggered with each other.

[0033] Since the comb teeth 321 are offset from each other, there will not be a situation where some bristles cannot be cleaned due to the fixed position of the comb teeth 321, thereby ensuring the overall cleanliness of the cleaning brush roller 4. When the cleaning brush roller 4 cleans the mesh cloth 2, the bristles in each part can play the best cleaning role, further improving the cleaning effect of the cleaning brush roller 4 on the mesh cloth 2, and effectively avoiding the problem of incomplete cleaning of the mesh cloth 2 due to local uncleanness of the bristles.

[0034] In some embodiments, see Figure 2 and Figure 3 The second cleaning scraper 32 gradually tilts downward along the direction from the cleaning brush roller 4 to the first cleaning scraper 31. The first cleaning scraper 31 is provided with a through hole 311, and the through hole 311 is used for the attachments on the second cleaning scraper 32 to pass through under the action of water flow.

[0035] After the comb teeth 321 clean the impurities from the bristles of the cleaning brush roller 4, these impurities will naturally slide down along the inclined second cleaning scraper 32 under the action of gravity. At the same time, the through hole 311 opened on the first cleaning scraper 31 provides a passage for the impurities sliding off the second cleaning scraper 32 to pass through under the action of water flow. In the actual cleaning process, after the water flow sprayed from the cleaning nozzle 5 rinses the mesh 2 and the cleaning brush roller 4, it will carry the impurities cleaned from the mesh 2 and the bristles to flow to the first cleaning scraper 31, so that the impurities are discharged through the through hole 311 along with the water flow.

[0036] In some embodiments, see Figure 2 A third cleaning scraper 33 is provided on the frame 1 to slide along the axial direction of the cleaning brush roller 4. The third cleaning scraper 33 abuts against the side of the first cleaning scraper 31 facing away from the second cleaning scraper 32. A reciprocating assembly is provided on the frame 1 for driving the third cleaning scraper 33 to reciprocate. The reciprocating assembly is connected to the cleaning brush roller 4 through a linkage assembly. When the cleaning brush roller 4 rotates, the reciprocating assembly moves.

[0037] When the third cleaning scraper 33 moves back and forth, it can scrape off impurities attached to the surface of the first cleaning scraper 31, always keeping the first cleaning scraper 31 clean, ensuring that the first cleaning scraper 31 can continuously and effectively scrape off impurities on the surface of the mesh 2 and maintain a good cleaning effect.

[0038] In some embodiments, see Figure 1 and Figure 2The reciprocating assembly includes a reciprocating screw 61, a guide rod 62 and a connecting block 63. The reciprocating screw 61 is rotatably connected to the frame 1, and its axial direction is the same as that of the cleaning brush roller 4. The guide rod 62 is fixedly connected to the frame 1, and its axial direction is the same as that of the reciprocating screw 61. The connecting block 63 is fixedly connected to the third cleaning scraper 33, and is respectively threadedly connected to the reciprocating screw 61 and slidably connected to the guide rod 62.

[0039] It should be noted that a corresponding cover may be provided on the frame 1 to cover the reciprocating screw 61 and the guide rod 62 inside, thereby preventing impurities on the mesh 2 from falling onto the reciprocating screw 61 and the guide rod 62 .

[0040] When the reciprocating screw 61 rotates driven by the cleaning brush roller 4, the connecting block 63 will move along the axial direction of the reciprocating screw 61 due to the threaded engagement with the reciprocating screw 61. At the same time, the guide rod 62 plays a guiding role, limiting the moving direction of the connecting block 63 so that it can only move along the axial direction of the guide rod 62, ensuring that the connecting block 63 will not deviate or shake, thereby ensuring the accuracy and stability of the cleaning action.

[0041] In some embodiments, see Figure 1 The linkage assembly includes a reducer 64, a driven pulley 65 and a driving pulley 66. The reducer 64 is fixedly connected to the frame 1, and the output end is connected to the reciprocating screw 61. The driven pulley 65 is fixedly connected to the input end of the reducer 64. The driving pulley 66 is fixedly connected to the cleaning brush roller 4, and is connected to the driven pulley 65 through a transmission belt 67.

[0042] When the cleaning brush roller 4 rotates, the driving pulley 66 rotates synchronously therewith. The rotation of the driving pulley 66 drives the driven pulley 65 to rotate through the transmission belt 67, thereby rotating the input end of the reducer 64. After the speed change and torque amplification of the reducer 64, the output end of the reducer 64 drives the reciprocating screw 61 to rotate at a suitable speed and torque, realizing the reciprocating movement of the third cleaning scraper 33, thereby ensuring the stable movement of the third cleaning scraper 33. At the same time, according to the actual cleaning needs, the speed of the reciprocating screw 61 can be adjusted by replacing different reducers 64.

[0043] In some embodiments, see Figure 1 and Figure 2 , the frame 1 is rotatably connected with pressure rollers 7 on both radial sides of the cleaning brush roller 4. Both pressure rollers 7 are against the non-working surface 22, so that the working surface 21 is pressed on the cleaning brush roller 4. The two pressure rollers 7 rotate in the direction of travel of the mesh 2.

[0044] It should be noted that the direction of the linear velocity of the pressing roller 7 toward one end of the non-working surface 22 is the same as the moving direction of the mesh 2 , so that the pressing roller 7 can guide the mesh 2 to move.

[0045] On the one hand, the working surface 21 of the mesh 2 can be tightly pressed against the cleaning brush roller 4 by the pressure roller 7, thereby significantly increasing the contact pressure between the cleaning brush roller 4 and the working surface 21 of the mesh 2, so that the bristles on the cleaning brush roller 4 can more deeply contact the mesh holes and fiber structure of the mesh 2, and more effectively brush out the impurities in the mesh 2, thereby improving the cleaning effect and making the mesh 2 more thoroughly cleaned. On the other hand, the rotation of the pressure roller 7 can guide the mesh 2 to move smoothly, ensure that the mesh 2 moves along the correct path, avoid the position deviation of the mesh 2 during the cleaning process, and ensure that the cleaning work can proceed smoothly.

[0046] In some embodiments, see Figure 1 The cleaning brush roller 4 and the two pressure rollers 7 are driven to rotate by a rotating drive assembly, and the rotating drive assembly includes a first pulley 81, a second pulley 82, two third pulleys 84 and a motor 86. Among them, the first pulley 81 is fixedly connected to the cleaning brush roller 4. The second pulley 82 is fixedly connected to any pressure roller 7, and is connected to the first pulley 81 through a first belt 83. The two third pulleys 84 are respectively fixed to the two pressure rollers 7 and are connected through a second belt 85. The sizes of the two third pulleys 84 are the same as those of the second pulley 82. The motor 86 is fixedly connected to the frame 1, and the output end is connected to the cleaning brush roller 4.

[0047] When the motor 86 is started and drives the cleaning brush roller 4 to rotate, the first pulley 81 rotates accordingly. The first pulley 81 drives the second pulley 82 to rotate through the first belt 83, thereby rotating the pressure roller 7 connected thereto. When the pressure roller 7 connected to the second pulley 82 rotates, it can drive the third pulley 84 connected to the pressure roller 7 to rotate, so that the third pulley 84 drives another third pulley 84 to rotate through the second belt 85, thereby realizing the rotation of another pressure roller 7. The size of the two third pulleys 84 is the same as that of the second pulley 82, which ensures that the rotation speeds of the two pressure rollers 7 are consistent, effectively avoiding the problems caused by the speed difference, thereby improving the cleaning effect of the mesh 2.

[0048] In some embodiments, see Figure 2 A vacuum water suction box 9 is fixedly connected to the frame 1 , and the vacuum water suction box 9 is located downstream of the cleaning brush roller 4 , and the input end of the vacuum water suction box 9 is attached to the working surface 21 .

[0049] It should be noted that the vacuum water suction box 9 is arranged behind the cleaning brush roller 4 along the traveling direction of the mesh cloth 2 , so that the mesh cloth 2 first passes through the cleaning brush roller 4 and then passes through the vacuum water suction box 9 .

[0050] The vacuum suction box 9 utilizes the vacuum suction force generated inside it to suck out the moisture and residual impurities in the mesh 2, so that the cleanliness of the mesh 2 is improved.

[0051] In summary, the vacuum cleaning device for mesh cloth used in filter paper production provided by the present invention, compared with the prior art, when the mesh cloth 2 moves on the travel path, the first cleaning scraper 31 can scrape off the larger pulp fibers, cut waste and other impurities attached to the working surface 21, reducing the burden of the subsequent cleaning process and preparing for the subsequent more detailed cleaning. A large relative speed is generated between the cleaning brush roller 4 and the mesh cloth 2, which enhances the cleaning ability of the cleaning brush roller 4 on the surface of the mesh cloth 2 and the impurities inside the mesh. When the mesh cloth 2 moves, the bristles of the cleaning brush roller 4 can penetrate into the mesh of the mesh cloth 2 and brush out the stubborn impurities such as fibers and resins remaining in the mesh. When the cleaning brush roller 4 brushes the mesh cloth 2, the water flow sprayed by the cleaning nozzle 5 flows from the non-working surface 22 of the mesh cloth 2 through the mesh to the working surface 21, and rinses the mesh cloth 2, which not only helps to further flush the impurities loosened by the cleaning brush roller 4 away from the mesh cloth 2, but also can further clean the mesh of the mesh cloth 2 and rinse out the impurities in the mesh more thoroughly.

[0052] Compared with the traditional method of high-pressure water washing only from the contact surface between the mesh 2 and the pulp, the present device performs cleaning from both sides of the mesh 2 in a coordinated manner, greatly enhancing the ability to clean impurities deep in the mesh 2 and inside the mesh holes, and effectively solving the problem that the traditional cleaning method cannot completely remove stubborn impurities.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum cleaning device for a mesh cloth used in filter paper production, used for cleaning a mesh cloth (2), the mesh cloth (2) having a downwardly facing working surface (21) and an upwardly facing non-working surface (22), the working surface (21) being the surface of the mesh cloth (2) in contact with paper pulp, characterized in that: include: A frame (1) arranged on a travel path of the mesh cloth (2); A first cleaning scraper (31) is fixedly connected to the frame (1) and abuts against the working surface (21); a cleaning brush roller (4) rotatably connected to the frame (1) and located downstream of the first cleaning scraper (31); an outer peripheral surface of the cleaning brush roller (4) abuts against the working surface (21); the cleaning brush roller (4) rotates in the opposite direction of the travel direction of the mesh cloth (2); and A cleaning nozzle (5) is fixedly connected to the frame (1) and is located above the cleaning brush roller (4); a water outlet end of the cleaning nozzle (5) faces the non-working surface (22) so that water flows through the mesh (2) and flows toward the cleaning brush roller (4).

2. A vacuum cleaning device for filter paper production as claimed in claim 1, characterized in that: A second cleaning scraper (32) is fixedly connected to the first cleaning scraper (31); the second cleaning scraper (32) has comb teeth (321) extending toward the cleaning brush roller (4); the comb teeth (321) extend into the bristles of the cleaning brush roller (4); when the cleaning brush roller (4) rotates, the comb teeth (321) clean attachments on the bristles and squeeze out moisture on the bristles.

3. A vacuum cleaning device for filter paper production as claimed in claim 2, characterized in that: A plurality of the second cleaning scrapers (32) are arranged along the height direction of the first cleaning scraper (31), and the comb teeth (321) on each two adjacent second cleaning scrapers (32) are arranged in a staggered manner.

4. A vacuum cleaning device for filter paper production as claimed in claim 2, characterized in that: The second cleaning scraper (32) is gradually inclined downward along the direction from the cleaning brush roller (4) to the first cleaning scraper (31), and the first cleaning scraper (31) is provided with a through hole (311), and the through hole (311) is used for attachments on the second cleaning scraper (32) to pass through under the action of water flow.

5. A vacuum cleaning device for filter paper production as claimed in claim 4, characterized in that: A third cleaning scraper (33) is slidably provided on the frame (1) along the axial direction of the cleaning brush roller (4), and the third cleaning scraper (33) abuts against a side of the first cleaning scraper (31) facing away from the second cleaning scraper (32); The frame (1) is provided with a reciprocating assembly for driving the third cleaning scraper (33) to reciprocate, the reciprocating assembly being connected to the cleaning brush roller (4) via a linkage assembly, and the reciprocating assembly is actuated when the cleaning brush roller (4) rotates.

6. A vacuum cleaning device for filter paper production as claimed in claim 5, characterized in that: The reciprocating assembly comprises: A reciprocating screw (61) is rotatably connected to the frame (1) and has an axial direction that is the same as that of the cleaning brush roller (4); A guide rod (62) fixedly connected to the frame (1) and having an axial direction which is the same as that of the reciprocating screw rod (61); The connecting block (63) is fixedly connected to the third cleaning scraper (33) and is respectively threadedly connected to the reciprocating screw (61) and slidably connected to the guide rod (62).

7. A vacuum cleaning device for filter paper production as claimed in claim 6, characterized in that: The linkage components include: A reducer (64) fixedly connected to the frame (1), and having an output end connected to the reciprocating screw (61); A driven pulley (65) fixedly connected to the input end of the reducer (64); The driving pulley (66) is fixedly connected to the cleaning brush roller (4) and is connected to the driven pulley (65) via a transmission belt (67).

8. A vacuum cleaning device for filter paper production as claimed in claim 1, characterized in that: The frame (1) is rotatably connected to pressure rollers (7) located on both radial sides of the cleaning brush roller (4); The two pressing rollers (7) are both pressed against the non-working surface (22), so that the working surface (21) is pressed against the cleaning brush roller (4); The two pressing rollers (7) rotate in the direction of travel of the mesh cloth (2).

9. A vacuum cleaning device for filter paper production as claimed in claim 8, characterized in that: The cleaning brush roller (4) and the two pressure rollers (7) are driven to rotate by a rotation drive assembly, and the rotation drive assembly comprises: A first pulley (81) fixedly connected to the cleaning brush roller (4); A second pulley (82) is fixedly connected to any one of the pressure rollers (7) and is connected to the first pulley (81) via a first belt (83); Two third belt pulleys (84) are respectively fixed on the two pressure rollers (7) and connected via a second belt (85); the sizes of the two third belt pulleys (84) are the same as the sizes of the second belt pulley (82); The motor (86) is fixedly connected to the frame (1), and the output end is connected to the cleaning brush roller (4).

10. A vacuum cleaning device for filter paper production as claimed in claim 1, characterized in that: A vacuum water suction box (9) is fixedly connected to the frame (1), the vacuum water suction box (9) is located downstream of the cleaning brush roller (4), and the input end of the vacuum water suction box (9) is attached to the working surface (21).

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