An inner scraper assembly capable of preventing water mist diffusion

Abstract

The utility model relates to an inner scraper assembly capable of preventing water mist diffusion, wherein the lower end of the fixing frame is connected with a guide roller through a guide roller support, the right side surface is provided with an L-shaped mounting frame, both ends of the lower surface of the mounting frame are provided with mounting supports, the outer ends of the two mounting supports are provided with adjusting devices, the fixed shaft is fixedly connected with the end surface of the mounting base, one end of the first connecting rod is fixedly connected with the fixed shaft, the other end is hingedly connected with a threaded sleeve a, one end of the second connecting rod is rotatably sleeved on the outside of the fixed shaft, the other end is hingedly connected with a threaded sleeve b, a threaded adjusting rod is threadedly rotatably arranged between the threaded sleeve a and the threaded sleeve b; the scraper device is fixedly arranged between the threaded sleeves b in the two adjusting devices; the limiting frame is integrally U-shaped, one end of the limiting frame is fixedly connected with the mounting frame, and the other end is located below the scraper device; the water spraying pipe is longitudinally arranged on the inner side of the lower end of the mounting frame; the utility model has the advantages of reasonable structure design, convenient adjusting operation and good use effect.

Description

Technical Field

[0001] This utility model belongs to the field of high-speed papermaking equipment manufacturing, specifically relating to an inner scraper assembly that can prevent water mist diffusion. Background Technology

[0002] Doctor blades are indispensable components in papermaking equipment, primarily installed on the guide rolls to scrape away residual paper scraps from their surface. Currently, existing wet-end doctor blade assemblies, to improve cleaning efficiency and reduce blade wear, typically incorporate a water spray pipe for lubrication above the doctor blade assembly. During operation, the water mist sprayed from the pipe onto the guide roll surface works in conjunction with the doctor blade itself to clean the surface. However, this design suffers from several drawbacks. The lack of an effective protective device on the side of the spray pipe allows water mist to easily spill outwards, affecting performance and the surrounding environment. Furthermore, the inability to adjust the overall angle and position of the doctor blade, or the inconvenient adjustment process, makes roll maintenance and replacement difficult due to the obstruction of the blade, resulting in limited space and inconvenient operation. Therefore, developing an internal doctor blade assembly with a rational design, convenient adjustment, good performance, and the ability to prevent water mist diffusion is essential to address these issues. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an inner scraper assembly with a reasonable structural design, convenient adjustment and operation, good performance and the ability to prevent water mist diffusion.

[0004] The purpose of this utility model is achieved as follows: An internal scraper assembly that prevents water mist diffusion includes a fixed frame, an adjusting device, a scraper device, a limiting frame, and a water spray pipe. The fixed frame is vertically arranged, with guide roller supports limiting the front and rear ends of its lower surface. A guide roller is longitudinally rotatably mounted between the two guide roller supports. A mounting frame is longitudinally fixed in the middle of the right side of the fixed frame. The mounting frame is L-shaped, with mounting supports limiting the front and rear ends of its lower surface. There are two adjusting devices, located at the outer ends of the two mounting supports, including a fixed shaft, a first connecting rod, a second connecting rod, and a threaded adjusting rod. The fixed shaft is longitudinally arranged and fixedly connected to the end face of the mounting base. The first connecting rod is vertically arranged, with one end connected to... A fixed shaft is fixedly connected, and a threaded sleeve a is hinged to the other end. The second connecting rod is arranged laterally, with one end rotatably sleeved outside the fixed shaft and the other end hinged to a threaded sleeve b. The threaded adjusting rod is rotatably arranged between the threaded sleeve a and the threaded sleeve b, and the thread direction at the upper end of the outer surface of the threaded adjusting rod is opposite to the thread direction at the lower end of the outer surface. The scraper device is inclined as a whole and is longitudinally fixed between the threaded sleeves b of the two adjusting devices. The limiting frame is U-shaped as a whole, with one end fixedly connected to the mounting frame and the other end located below the scraper device. The water spray pipe is arranged longitudinally as a whole, located inside the lower end of the mounting frame, and is limitedly connected to the mounting frame by a U-shaped clamp. The lower end of the water spray pipe is inclined and fixedly connected to multiple nozzles.

[0005] Furthermore, a square rotating nut is fixedly fitted onto the middle of the outer surface of the threaded adjusting rod.

[0006] Furthermore, the scraper device includes a base plate, an intermediate connecting block, and a scraper body. The base plate is longitudinally fixed between the threaded sleeves b in the two adjustment devices. The intermediate connecting block is a groove-shaped structure with an opening at the upper end and is fixedly installed above the base plate. A connecting seat is provided in the middle of the inner bottom surface of the intermediate connecting block. An adjusting airbag a is provided on the left side of the inner bottom surface, and an adjusting airbag b is provided on the right side of the inner bottom surface. The scraper body is located above the intermediate connecting block, with its left end in contact with the outer surface of the guide roller. A support block is fixedly provided on the right end of its lower surface. The support block is hinged to the connecting seat, and the lower surface of the scraper body is fixedly connected to the adjusting airbag a and the adjusting airbag b.

[0007] Furthermore, both the regulating airbag a and the regulating airbag b are externally connected to a control air pump.

[0008] Furthermore, the lower surface of the base plate contacts the left end of the U-shaped structure of the limiting frame.

[0009] Furthermore, the guide roller support and the fixed frame, as well as the mounting support and the mounting frame, are all connected by fixing bolts to achieve a limiting connection.

[0010] The beneficial effects of this utility model are as follows: This utility model, by setting up an installation support, a fixed shaft, a first connecting rod, a second connecting rod, a threaded adjusting rod, a threaded sleeve a, and a threaded sleeve b, allows for the following: When the threaded adjusting rod is rotated by external force, the two ends of the threaded adjusting rod are respectively connected to the threaded sleeve a and the threaded sleeve b, the threaded sleeve a is hinged to the first connecting rod, the threaded sleeve b is hinged to the second connecting rod, the first connecting rod is fixedly connected to the fixed shaft, and the second connecting rod is rotated to the fixed shaft. This allows the threaded adjusting rod to move itself and the threaded sleeve b simultaneously. Furthermore, the movement of the threaded sleeve b adjusts the position of the scraper device and simultaneously rotates the second connecting rod around the fixed shaft. Thus, by using the threaded sleeve b to adjust the movement of the scraper device, combined with the support provided by the left end of the limiting frame to the bottom of the scraper device, the entire scraper device can be locked and limited, preventing it from shaking or shifting during use.

[0011] By setting up a base plate, intermediate connecting block, scraper body, connecting seat, adjusting airbag a, adjusting airbag b, and support block, and utilizing the hinge between the support block and the connecting seat, during use, by controlling the deflation of adjusting airbag a and the inflation of adjusting airbag b, the scraper body can be driven to rotate counterclockwise around the support block, thereby switching the scraper body from the standby position to the working position. Conversely, by controlling the inflation of adjusting airbag a and the deflation of adjusting airbag b, the scraper body can be driven to rotate clockwise around the support block, thereby switching the scraper body from the working position to the standby position.

[0012] By setting up a water spray pipe, a U-shaped clamp, a nozzle, and a mounting bracket, the U-shaped clamp allows for the water spray pipe to be positioned and installed on the inner side of the lower end of the mounting bracket. The nozzle sprays water from inside the water spray pipe onto the surface of the guide roller, thus working with the scraper body to clean impurities remaining on the guide roller surface. The L-shaped mounting bracket not only secures the mounting support and the limiting bracket but also acts as a shield, effectively solving the problem of water mist from the nozzle overflowing outwards. In summary, this utility model has the advantages of reasonable structural design, convenient adjustment and operation, and good performance. Attached Figure Description

[0013] Figure 1 This is a front view of the present invention.

[0014] Figure 2 This is a front view of the connection between the guide roller, scraper device, adjustment device, limit frame and water spray pipe in this utility model.

[0015] Figure 3 This is a sectional view of the front view of the scraper device in this utility model.

[0016] In the diagram: 1. Fixed frame; 11. Guide rail support; 12. Guide roller; 2. Adjustment device; 21. Fixed shaft; 22. First connecting rod; 23. Second connecting rod; 24. Threaded adjusting rod; 25. Threaded sleeve a; 26. Threaded sleeve b; 27. Rotating nut; 3. Scraper device; 31. Base plate; 32. Intermediate connecting block; 33. Scraper body; 34. Connecting seat; 35. Adjusting airbag a; 36. Adjusting airbag b; 37. Support block; 4. Limiting frame; 5. Water spray pipe; 51. U-shaped clamp; 52. Nozzle; 6. Mounting frame; 61. Mounting support. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Example: Figure 1 , Figure 2 , Figure 3 As shown, an inner scraper assembly for preventing water mist diffusion includes a fixed frame 1, an adjusting device 2, a scraper device 3, a limiting frame 4, and a water spray pipe 5. The fixed frame 1 is vertically arranged, with guide roller supports 11 limiting the front and rear ends of its lower surface. A guide roller 12 is longitudinally rotatably mounted between the two guide roller supports 11. A mounting frame 6 is longitudinally fixed in the middle of the right side of the fixed frame 1. The mounting frame 6 is L-shaped, with mounting supports 61 limiting the front and rear ends of its lower surface. There are two adjusting devices 2, located at the outer ends of the two mounting supports 61, including a fixed shaft 21, a first connecting rod 22, a second connecting rod 23, and a threaded adjusting rod 24. The fixed shaft 21 is longitudinally arranged and fixedly connected to the end face of the mounting base 61. The first connecting rod 22 is vertically arranged, with one end fixed to the fixed shaft 21. The first connecting rod 23 is horizontally arranged, with one end rotatably sleeved on the outside of the fixed shaft 21 and the other end hinged to a threaded sleeve b26. The threaded adjusting rod 24 is rotatably arranged between the threaded sleeve a25 and the threaded sleeve b26, and the thread direction of the upper part of the outer surface of the threaded adjusting rod 24 is opposite to the thread direction of the lower part of the outer surface. The scraper device 3 is inclined and longitudinally fixed between the threaded sleeves b26 in the two adjusting devices 2. The limiting frame 4 is U-shaped, with one end fixedly connected to the mounting frame 6 and the other end located below the scraper device 3. The water spray pipe 5 is longitudinally arranged, located inside the lower end of the mounting frame 6, and is limitedly connected to the mounting frame 6 through a U-shaped clamp 51. The lower end of the water spray pipe 5 is inclined and fixedly connected to multiple nozzles 52.

[0019] A square rotating nut 27 is fixedly fitted onto the middle of the outer surface of the threaded adjusting rod 24. The rotating nut 27 increases the convenience of rotating the threaded adjusting rod 24. The scraper device 3 includes a base plate 31, an intermediate connecting block 32, and a scraper body 33. The base plate 31 is longitudinally fixed between the threaded sleeves b26 in the two adjusting devices 2. The intermediate connecting block 32 is a groove-shaped structure with an opening at the upper end and is fixedly installed above the base plate 31. A connecting seat 34 is provided in the middle of the inner bottom surface of the intermediate connecting block 32. An adjusting airbag a35 is provided on the left side of the inner bottom surface, and an adjusting airbag b36 is provided on the right side of the inner bottom surface. The scraper body 33 is located above the intermediate connecting block 32. Its left end contacts the outer surface of the guide roller 12, and a support block 37 is fixedly provided on the right end of its lower surface. The support block 37 is hinged to the connecting seat 34, and the lower surface of the scraper body 33 is fixedly connected to the adjusting airbag a35 and the adjusting airbag b36.

[0020] Both the regulating airbag a35 and the regulating airbag b36 are externally connected to a control air pump; the lower surface of the base plate 31 is in contact with the left end of the U-shaped structure of the limiting frame 4; the guide roller support 11 and the fixed frame 1, and the mounting support 61 and the mounting frame 6 are all limited by fixing bolts.

[0021] When using this utility model, the scraper device 3 first needs to be adjusted in position. The specific adjustment operation is as follows: Rotate the threaded adjusting rod 24 by external force. At this time, by utilizing the threaded rotational connection between the two ends of the threaded adjusting rod 24 and the threaded sleeves a25 and b26 respectively, the hinge connection between the threaded sleeve a25 and the first connecting rod 22, the hinge connection between the threaded sleeve b26 and the second connecting rod 23, the fixed connection between the first connecting rod 22 and the fixed shaft 21, and the rotational sleeve connection between the second connecting rod 23 and the fixed shaft 21, the threaded adjusting rod 24 can rotate while driving itself and... The threaded sleeve b26 moves, thereby adjusting the position of the scraper device 3 and simultaneously causing the second connecting rod 23 to rotate around the fixed shaft 21. Thus, by using the threaded sleeve b26 to adjust the movement of the scraper device 3, combined with the support provided by the left end of the limiting bracket 4 to the bottom of the scraper device 3, the entire scraper device 3 can be locked and positioned, preventing it from wobbling or shifting during use. Furthermore, this invention utilizes this structure, featuring a scraper device 3 with adjustable position. This effectively solves the problem of limited operating space and inconvenience caused by the guide roller 12 being too close to the scraper device 3 during disassembly or installation. After locking and limiting the scraper device 3, the air pump is controlled to vent air from the regulating airbag a35 and inflate the regulating airbag b36. At this time, utilizing the hinge between the support block 37 and the connecting seat 34, the scraper body 33 can rotate counterclockwise around the support block 37 while the regulating airbag a35 vents and contracts, and the regulating airbag b36 inflates and unfolds, thus completing the connection between the outer end of the scraper body 33 and the outer surface of the guide rail 12. The contact between the surfaces allows the scraper body 33 to switch from the standby position to the working position. Finally, during the rotation of the guide roller 12, the nozzle 52 can spray the cleaning water injected into the water spray pipe 5 onto the surface of the guide roller 12, thereby working with the scraper body 33 to clean the impurities remaining on the surface of the guide roller 12. In this process, the mounting bracket 6 can act as a shield, effectively solving the problem of water mist sprayed by the nozzle 52 overflowing to the surroundings. In summary, this utility model has the advantages of reasonable structural design, convenient adjustment and operation, and good performance.

[0022] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model without departing from the spirit and scope of this utility model. Any modifications or equivalent substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An inner scraper assembly for preventing water mist diffusion, comprising a fixing frame (1), an adjusting device (2), a scraper device (3), a limiting frame (4), and a water spray pipe (5), wherein the fixing frame (1) is vertically oriented, and guide roller supports (11) are provided at both the front and rear ends of its lower surface, and a guide roller (12) is longitudinally rotatably mounted between the two guide roller supports (11), characterized in that: A mounting bracket (6) is longitudinally fixedly installed in the middle of the right side of the fixed frame (1). The mounting bracket (6) is L-shaped in general, and mounting supports (61) are provided at the front and rear ends of its lower surface. There are two adjustment devices (2), which are located at the outer ends of the two mounting supports (61) respectively. The devices include a fixed shaft (21), a first connecting rod (22), a second connecting rod (23), and a threaded adjusting rod (24). The fixed shaft (21) is longitudinally arranged and fixedly connected to the end face of the mounting support (61). The first connecting rod (22) is vertically arranged, with one end fixedly connected to the fixed shaft (21) and the other end hinged to a threaded sleeve a (25). The second connecting rod (23) is transversely arranged, with one end rotatably sleeved on the outside of the fixed shaft (21) and the other end hinged to a threaded sleeve a (25). There is a threaded sleeve b (26), and the threaded adjusting rod (24) is rotatably disposed between the threaded sleeve a (25) and the threaded sleeve b (26), and the thread direction of the upper part of the outer surface of the threaded adjusting rod (24) is opposite to the thread direction of the lower part of the outer surface; the scraper device (3) is inclined as a whole and is longitudinally fixed between the threaded sleeve b (26) in the two adjusting devices (2); the limiting frame (4) is U-shaped as a whole, one end of which is fixedly connected to the mounting frame (6), and the other end is located below the scraper device (3); the water spray pipe (5) is longitudinally disposed as a whole, located inside the lower end of the mounting frame (6), and is limitedly connected to the mounting frame (6) through a U-shaped clamp (51), and the lower end of the water spray pipe (5) is inclined and fixedly connected to multiple nozzles (52).

2. The inner scraper assembly for preventing water mist diffusion as described in claim 1, characterized in that: A square rotating nut (27) is fixedly fitted onto the middle of the outer surface of the threaded adjusting rod (24).

3. The inner scraper assembly for preventing water mist diffusion as described in claim 1, characterized in that: The scraper device (3) includes a base plate (31), an intermediate connecting block (32) and a scraper body (33). The base plate (31) is longitudinally fixed between the threaded sleeves b (26) in the two adjustment devices (2). The intermediate connecting block (32) is a groove structure with an opening at the upper end and is fixedly installed above the base plate (31). A connecting seat (34) is provided in the middle of the inner bottom surface of the intermediate connecting block (32). An adjusting airbag a (35) is provided on the left side of the inner bottom surface and an adjusting airbag b (36) is provided on the right side of the inner bottom surface. The scraper body (33) is located above the intermediate connecting block (32). Its left end is in contact with the outer surface of the guide roller (12). A support block (37) is fixedly provided on the right end of the lower surface. The support block (37) is hinged to the connecting seat (34), and the lower surface of the scraper body (33) is fixedly connected to the adjusting airbag a (35) and the adjusting airbag b (36).

4. The inner scraper assembly for preventing water mist diffusion as described in claim 3, characterized in that: Both the regulating airbag a (35) and the regulating airbag b (36) are externally connected to a control air pump.

5. The inner scraper assembly for preventing water mist diffusion as described in claim 3, characterized in that: The lower surface of the base plate (31) is in contact with the left end of the U-shaped structure of the limiting frame (4).

6. The inner scraper assembly for preventing water mist diffusion as described in claim 1, characterized in that: The guide roller support (11) and the fixed frame (1), and the mounting support (61) and the mounting frame (6) are all connected by fixing bolts to achieve a limiting connection.

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