Cleaning device for pressure rollers of screen pressing machine

By designing a cleaning device for the pressure rollers of the screen pressing machine, using a liquid storage tank, a pressurizing structure, and a pushing component, efficient automatic cleaning is achieved, solving the problems of time-consuming and labor-intensive processes and brush wear in existing technologies, and ensuring the cleaning effect of the pressure rollers and product quality.

CN224574598UActive Publication Date: 2026-07-31DEZHOU YINGKAIMO METAL MESH CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DEZHOU YINGKAIMO METAL MESH CO LTD
Filing Date
2025-08-29
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

The existing screen pressing machine cleaning method is time-consuming and labor-intensive, the brushes wear out severely, the cleaning effect is not good, and the oil stains are printed back, affecting product quality.

Method used

Design a cleaning device for the pressure rollers of a screen pressing machine. It adopts a liquid storage tank, a pressurizing structure and a pushing component. It achieves automatic cleaning through intermittent contact to avoid continuous contact and wear of the brush. It also supplies liquid quantitatively through a liquid transfer structure to reduce manual intervention.

Benefits of technology

It achieves efficient cleaning of the pressure roller, reduces brush wear, lowers workload, ensures product quality, and avoids oil stains from being printed back.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides a cleaning device for the pressure rollers of a screen pressing machine, including a mounting plate, a liquid storage tank, a pressurizing structure, a pushing assembly, and a liquid transfer structure. The mounting plate can be fixed to the frame of the screen pressing machine. The bottom of the mounting plate has a slide rail arranged in the same direction as the screen pressing channel. The liquid storage tank is fixed to the mounting plate. The liquid storage tank has a one-way air inlet and a one-way liquid outlet. The pressurizing structure is disposed in the liquid storage tank and has a contact end that can automatically extend out of the liquid storage tank. The pushing assembly is slidably connected to the slide rail. The pushing assembly has a pushing part corresponding to the contact end. The pushing assembly also has a brush part corresponding to the pressure roller. The pushing assembly can drive the brush part to intermittently contact the pressure roller. The liquid transfer structure is connected to the one-way liquid outlet and to a pipe opening provided on the brush part. The cleaning device for the pressure rollers of a screen pressing machine provided by this invention can avoid wear on the brush part caused by continuous contact between the brush part and the pressure roller, while also reducing the workload of workers, making it highly practical.
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Description

Technical Field

[0001] This utility model belongs to the field of screen pressing machine cleaning technology, specifically relating to a cleaning device for screen pressing machine rollers. Background Technology

[0002] A wire mesh pressing machine is a key post-processing device in the metal wire mesh production process. Its main function is to level, shape, and strengthen woven or welded metal mesh (such as stainless steel mesh, iron wire mesh, protective mesh, conveyor belts, etc.) to obtain a flat, dimensionally stable final product with superior mechanical properties. A wire mesh pressing machine typically includes two pressure rollers, forming a pressing channel between them for the metal wire mesh to pass through. However, during the weaving and processing of metal wire mesh, lubricating oil and rust-preventive oil are used. Therefore, when the metal wire mesh passes through the two pressure rollers, oil residue remains on the rollers, affecting their cleanliness. Furthermore, after prolonged pressing, this oil accumulates on the rollers, and during subsequent pressing processes, this oil residue will be transferred to the surface of the remaining metal wire mesh, causing oil stains and affecting product quality.

[0003] In existing technologies, workers typically use a brush of a certain length that is in direct contact with the pressure roller. During the pressing process, workers intermittently inject cleaning fluid, such as alcohol, into the surface of the brush from the tip. While this method achieves some cleaning effect, the continuous contact between the pressure roller and the brush causes significant friction and heat, leading to brush wear and the formation of brush debris, which in turn generates new contaminants. Furthermore, manually injecting the cleaning fluid is time-consuming, labor-intensive, and difficult to control the amount injected. Utility Model Content

[0004] This utility model provides a cleaning device for the pressure rollers of a screen pressing machine, which aims to solve the problem of poor practicality of existing methods for removing oil stains from the pressure rollers of screen pressing machines.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a cleaning device for the pressure rollers of a screen pressing machine, comprising: A mounting plate is used to fix the screen pressing machine to the frame; the bottom of the mounting plate is provided with a slide rail that is arranged in the same direction as the screen pressing channel; A liquid storage tank is fixedly mounted on the mounting plate; the liquid storage tank has a one-way air inlet and a one-way liquid outlet; A pressurization structure is provided in the liquid storage tank and has a contact end that can automatically extend out of the liquid storage tank; A push assembly is slidably connected to the slide rail; the push assembly has a push portion corresponding to the contact end; the push assembly also has a brush portion corresponding to the pressure roller; the push assembly is used to drive the brush portion to intermittently contact the pressure roller; The liquid transfer structure is connected to the one-way liquid outlet and to the pipe opening provided on the brush part. During the process of the push assembly approaching and contacting the pressure roller, the push part presses the contact end to increase the pressure on the liquid storage tank, and the cleaning liquid squeezed out from the one-way liquid outlet is transferred to the brush part through the liquid transfer structure.

[0006] In one possible implementation, the booster structure includes: A fixed cylinder is fixedly mounted on the liquid storage tank, and its axis is parallel to the direction of the slide rail; one end of the fixed cylinder extends out of the liquid storage tank; the outer end of the fixed cylinder is provided with an outer limiting ring, and the inner end of the fixed cylinder is provided with an inner limiting ring; A piston is slidably disposed in the fixed cylinder; one end of the piston is connected to an extension column that can extend out of the liquid storage tank through the outer limiting ring; the extension column is the contact end; A spring is disposed in the fixed cylinder, one end of the spring abutting against the piston and the other end abutting against the inner limiting ring located in the liquid storage tank; the spring is used to spring the piston, so that the extension cylinder has a tendency to continuously extend outward.

[0007] In one possible implementation, the push component includes: A sliding plate is located below the mounting plate and is slidably mounted on the slide rail; a vertical plate is fixed to one end of the sliding plate away from the pressure roller; a push column is provided on the vertical plate along the direction of the slide rail, and the push column is the push part; A telescopic structure is fixed to the bottom end of the mounting plate and connected to the sliding plate, used to drive the sliding plate to move; The mounting bracket is fixed to the sliding plate and has an extension end extending in the direction of the pressure roller; A long strip brush is fixedly mounted on the extended end, and the long strip brush is the brush part; The mounting plate has a long slot for the upright plate to pass through and for the upright plate to move.

[0008] In one possible implementation, the long strip brush is positioned diagonally downwards.

[0009] In one possible implementation, the push rod is a screw that is adapted to connect with a threaded hole provided on the vertical plate.

[0010] In one possible implementation, the telescopic structure is an electric actuator.

[0011] In one possible implementation, multiple openings are provided, and each opening is spaced apart along the length of the brush portion.

[0012] In one possible implementation, the liquid transfer structure includes: The main pipe has one end connected to the one-way liquid outlet, and the other end has multiple outlets that can correspond one-to-one with each pipe opening; The system comprises multiple flexible tubes, each corresponding to a specific outlet. One end of each flexible tube is connected to the corresponding outlet, and the other end is connected to the corresponding pipe opening.

[0013] In one possible implementation, the top of the liquid storage tank is provided with a sealing cap.

[0014] In this implementation, the mounting plate ensures a fixed connection with the screen pressing machine, thus providing a support platform on the machine. The pushing assembly drives the brush section to reciprocate, causing the brush section to intermittently contact the pressure roller. This avoids brush wear caused by continuous contact with the pressure roller, preventing the formation of new contaminants. A storage tank and a pressurizing structure are also included. The contact end of the pressurizing structure corresponds to the pushing part in the pushing assembly. As the pushing assembly moves closer to the pressure roller, the pushing part presses against the contact end, pressurizing the storage tank. This allows the cleaning solution in the storage tank to be discharged through a one-way outlet and transported to the nozzle on the brush section via a liquid transfer structure. The cleaning solution then enters the brush section and coats the pressure roller, effectively ensuring a cleaning effect. Furthermore, it eliminates the need for continuous, metered replenishment of the cleaning solution, reducing workload. In addition, when the cleaning fluid is alcohol, alcohol is volatile. During the time when the brush part is separated from the pressure roller, the alcohol on the brush part absorbs heat during the evaporation process, which can also cool down the brush part and further prevent wear on the brush part. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of the cleaning device for the pressure rollers of a screen pressing machine provided in this embodiment of the present invention. Figure 1 ; Figure 2 A schematic diagram of the structure of the cleaning device for the pressure rollers of a screen pressing machine provided in this embodiment of the present invention. Figure 2 ; Figure 3 A schematic front view of the cleaning device for the pressure rollers of a screen pressing machine provided in an embodiment of this utility model; Figure 4 A cross-sectional view of a cleaning device for the pressure rollers of a screen pressing machine provided in an embodiment of this utility model (in conjunction with the screen pressing machine). Figure 5 for Figure 4 An enlarged structural diagram of point A of the cleaning device for the pressure rollers of the screen pressing machine provided in the embodiment.

[0016] Explanation of reference numerals in the attached figures: 10. Mounting plate; 11. Slide rail; 12. Notch; 20. Liquid storage tank; 21. One-way air inlet; 22. One-way liquid outlet; 23. Sealing cap; 30. Pressurization structure; 31. Fixed cylinder; 32. Limiting ring; 33. Piston; 34. Extension column; 35. Spring; 40. Jacking assembly; 41. Sliding plate; 42. Telescopic structure; 43. Mounting bracket; 44. Long strip brush; 45. Vertical plate; 46. Jacking column; 47. Pipe opening; 50. Liquid transfer assembly; 51. Main pipe; 52. Flexible tube; 60. Screen pressing machine; 61. Pressing roller. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Please refer to the following: Figure 1 and Figure 2 The cleaning device for the pressure rollers of a screen pressing machine provided by this utility model will now be described. The cleaning device for the pressure rollers of a screen pressing machine includes a mounting plate 10, a liquid storage tank 20, a pressure boosting structure 30, a pushing assembly 40, and a liquid transfer structure. The mounting plate 10 can be fixed to the frame of the screen pressing machine 60. A slide rail 11, aligned with the screen pressing channel, is provided at the bottom of the mounting plate 10. The liquid storage tank 20 is fixed to the mounting plate 10. The liquid storage tank 20 has a one-way air inlet 21 and a one-way liquid outlet 22. The pressure boosting structure 30 is disposed in the liquid storage tank 20 and has a contact end that can automatically extend out of the liquid storage tank 20. The pushing assembly 40 is slidably connected to the slide rail 11. The pushing assembly 40 has a pushing part corresponding to the contact end. The pushing assembly 40 also has a brush part corresponding to the pressure roller 61. The pushing assembly 40 can drive the brush part to intermittently contact the pressure roller 61. The liquid transfer structure is connected to the one-way liquid outlet 22 and to the pipe 47 provided on the brush part.

[0019] During the process of the push assembly 40 approaching and contacting the pressure roller 61, the push part presses the contact end to increase the pressure on the liquid storage tank 20, and the cleaning liquid squeezed out from the one-way liquid outlet 22 is transferred to the brush part through the liquid transfer structure.

[0020] The cleaning device for the pressure rollers of the screen pressing machine provided in this embodiment works as follows: After the mounting plate 10 is installed on the frame of the screen pressing machine 60, the push assembly 40 drives the brush part to approach and abut against the pressure roller 61. During this process, the push part on the push assembly 40 moves synchronously and presses the contact end, pressurizing the liquid storage tank 20 through the pressurizing structure 30. After pressurization, the cleaning liquid in the liquid storage tank 20 is discharged through the one-way outlet 22 and transferred to the pipe 47 through the liquid transfer structure, and then enters the brush part. When the cleaning liquid in the brush part comes into contact with the pressure roller 61, it is transferred to the surface of the pressure roller 61, thereby cleaning the surface of the pressure roller 61.

[0021] Specifically, the push assembly 40 moves back and forth, thereby achieving intermittent contact between the brush part and the pressure roller 61. As the push assembly 40 drives the brush part away from the pressure roller 61, the pressure inside the liquid storage tank 20 decreases, and the pressure is balanced through the one-way inlet.

[0022] The cleaning device for the pressure rollers of the screen pressing machine provided in this embodiment, compared with the prior art, ensures a fixed connection between the mounting plate 10 and the screen pressing machine 60, thereby providing a support platform on the screen pressing machine 60. The pushing assembly 40 can drive the brush part to reciprocate, thereby making the brush part intermittently contact the pressure roller 61. This method can avoid the wear of the brush part caused by continuous contact between the brush part and the pressure roller 61, thereby avoiding the formation of new contaminants. Simultaneously, a storage tank 20 and a pressurizing structure 30 are provided. The contact end of the pressurizing structure 30 corresponds to the pusher part in the pusher assembly 40. As the pusher assembly 40 moves closer to the pressure roller 61, the pusher part can press against the contact end, thereby pressurizing the storage tank 20. This allows the cleaning fluid in the storage tank 20 to be discharged through the one-way outlet 22 and transported to the pipe 47 on the brush part through the liquid transfer structure. This allows the cleaning fluid to enter the brush part and be coated onto the pressure roller 61, effectively ensuring the cleaning effect. Moreover, it eliminates the need for continuous quantitative replenishment of the cleaning fluid by the operator, reducing workload. In addition, when the cleaning fluid is alcohol, given its volatile nature, the alcohol on the brush part absorbs heat during the time it is no longer in contact with the pressure roller 61, which also cools the brush part and further prevents wear on the brush part.

[0023] In this embodiment, the mounting plate 10 needs to be set along the width direction of the screen pressing machine 60, which is perpendicular to the extension direction of the transfer channel. The mounting plate 10 may have two mutually perpendicular mounting surfaces, as shown in [reference needed]. Figure 1 and Figure 2 The two mounting surfaces can ensure installation on the top surface or the side surface of the screen pressing machine 60, for example... Figure 4 That is, it is installed on the side of the screen pressing machine 60.

[0024] Additionally, it should be noted that the screen pressing machine 60 has two pressure rollers 61. The cleaning device provided in this embodiment can be correspondingly installed on the upper pressure roller 61, while providing a relatively excessive amount of cleaning fluid. The cleaning fluid can be transferred to the lower pressure roller 61 by gravity and the rotation of the pressure roller 61, thus ensuring the cleaning effect. Of course, two cleaning devices can also be provided, one for the upper pressure roller 61 and the other for the lower pressure roller 61.

[0025] In some embodiments, the above-described booster structure 30 may employ, as follows: Figure 2 and Figure 5 The structure shown. See also Figure 2 and Figure 5 The pressurization structure 30 includes a fixed cylinder 31, a piston 33, and a spring 35. The fixed cylinder 31 is fixed to the liquid storage tank 20, and its axis is parallel to the direction of the slide rail 11. One end of the fixed cylinder 31 extends out of the liquid storage tank 20. An outer limiting ring 32 is provided at the outer end of the fixed cylinder 31, and an inner limiting ring 32 is provided at the inner end of the fixed cylinder 31. The piston 33 is slidably disposed in the fixed cylinder 31. One end of the piston 33 is connected to an extension post 34 that can extend out of the liquid storage tank 20 through the outer limiting ring 32. The extension post 34 is a contact end. The spring 35 is disposed in the fixed cylinder 31, with one end abutting against the piston 33 and the other end abutting against the inner limiting ring 32 located inside the liquid storage tank 20. The spring 35 can spring the piston 33, causing the extension post to have a continuous tendency to extend outward.

[0026] The fixed cylinder 31 is arranged along the direction of the slide rail 11, with one end extending into the liquid storage tank 20. Limiting rings 32 are provided at both ends of the fixed cylinder 31, meaning the fixed cylinder 31 and the liquid storage tank 20 are connected. The fixed cylinder 31 ensures the sliding connection of the piston 33 and also guarantees a sealing effect; a sealing ring can be provided on the outer circumferential surface of the piston 33. The limiting rings 32 ensure that the piston 33 is limited and prevents it from detaching from the fixed cylinder 31. The extension column 34 extends out of the fixed cylinder 31, i.e., out of the liquid storage tank 20, ensuring it corresponds with the pushing part.

[0027] When the pusher presses the extension column 34, the extension column 34 and piston 33 move synchronously into the storage tank 20. At this time, the spring 35 is compressed, reducing the volume of the space connecting the storage tank 20 and the fixed cylinder 31. Since the one-way air inlet 21 cannot exhaust air, the internal pressure of the storage tank 20 increases, and the cleaning fluid can be discharged through the one-way outlet 22. When the pusher moves in the opposite direction, the spring 35 pushes the piston 33 to move in the opposite direction. At this time, the volume of the space connecting the storage tank 20 and the fixed cylinder 31 increases, the internal pressure decreases, and air is introduced through the one-way air inlet 21 to balance the internal pressure.

[0028] This structure allows for control of the amount of cleaning fluid discharged in a single cycle by setting the travel distance of the pusher or the pusher assembly 40, which facilitates control of the injection volume and ensures cleaning effectiveness.

[0029] In this embodiment, existing technologies can be used for the one-way air inlet 21 and the one-way liquid outlet 22. For example, an air inlet pipe can be provided at the top of the liquid storage tank 20, with a one-way valve connected to the air inlet pipe or a one-way valve flap installed inside the air inlet pipe, the two combined to form the one-way air inlet 21. A liquid outlet pipe can be provided at the bottom of the liquid storage tank 20, with a one-way valve connected to the liquid outlet pipe or a one-way valve flap installed inside the liquid outlet pipe, the two combined to form the one-way liquid outlet 22. The above technologies are well known to those skilled in the art and will not be described in detail here.

[0030] In some embodiments, the aforementioned pushing component 40 may employ, as follows: Figures 2 to 4 The structure shown. See also Figures 2 to 4 The jacking assembly 40 includes a sliding plate 41, a telescopic structure 42, a mounting bracket 43, a long brush 44, a vertical plate 45, and a jacking column 46. The sliding plate 41 is located below the mounting plate 10 and is slidably mounted on the slide rail 11. The vertical plate 45 is fixedly mounted on the end of the sliding plate 41 away from the pressure roller 61. The jacking column 46, which is the jacking part, is provided on the vertical plate 45 and is arranged along the direction of the slide rail 11. The telescopic structure 42 is fixedly mounted on the bottom end of the mounting plate 10 and connected to the sliding plate 41, and can drive the sliding plate 41 to move. The mounting bracket 43 is fixedly mounted on the sliding plate 41 and has an extension end extending towards the pressure roller 61. The long brush 44 is fixedly mounted on the extension end and is the brush part.

[0031] The mounting plate 10 has a long notch 12 for the upright plate 45 to pass through and for the upright plate 45 to move.

[0032] The sliding plate 41 is slidably connected to the slide rail 11 via a slider. The sliding plate 41 is also connected to the telescopic structure 42 and can slide under the drive of the telescopic structure 42. The mounting bracket 43 is fixed on the sliding plate 41 and can extend towards the pressure roller 61 to ensure the fixed installation of the long strip brush 44.

[0033] The vertical plate 45 provided on the sliding plate 41 can ensure the fixed installation of the jacking column 46.

[0034] As the telescopic structure 42 moves the sliding plate 41 closer to the pressure roller 61, the long brush 44 moves closer to the pressure roller 61. At the same time, the push column 46 can approach and press the abutment end, thereby ensuring that the cleaning fluid is injected onto the long brush 44 as the sliding plate 41 approaches the pressure roller 61. This ensures that when the long brush 44 contacts the pressure roller 61, the cleaning fluid is directly applied to the surface of the pressure roller 61.

[0035] In this embodiment, the elongated brush 44 may include an elongated plate arranged along the width of the screen pressing machine 60 and fixedly connected to the mounting frame 43, with brush bristles evenly distributed on the end of the elongated plate near the pressure roller 61. The nozzle 47 may be fixed to the elongated plate.

[0036] In some embodiments, the elongated brush 44 described above can be adopted as follows: Figure 3 and Figure 4 The structure shown. See also Figure 3 and Figure 4 The long strip brush 44 is set at an angle downward, which can increase the contact area with the pressure roller 61 when it comes into contact with the pressure roller 61, thereby ensuring the cleaning effect.

[0037] In some embodiments, the aforementioned pusher column 46 can be adopted as follows: Figure 4 The structure shown. See also Figure 4 The push rod 46 is a screw that is adapted to connect with the threaded hole on the vertical plate 45. The screw ensures that its length extending out of the vertical plate 45 is adjustable, thereby allowing control over the injection volume of cleaning fluid in a single operation. It is convenient to operate and highly practical.

[0038] In some embodiments, the telescopic structure 42 may adopt the following... Figure 4 The structure shown. See also Figure 4 The telescopic structure 42 is an electric push rod, which is easy to install and easy to control.

[0039] In some embodiments, the aforementioned port 47 may be as follows: Figure 1 The structure shown. See also Figure 1 Multiple nozzles 47 are provided, and each nozzle 47 is spaced apart along the length of the brush section. Since the long brush 44 has a certain length, the multiple nozzles 47 can ensure that the cleaning liquid can be evenly distributed on the brush bristles, thereby ensuring the coverage area of ​​the pressure roller 61 and ensuring the cleaning effect.

[0040] In some embodiments, the above-described liquid transfer structure may employ, as follows: Figure 1 The structure shown. See also Figure 1 The liquid transfer structure includes a main pipe 51 and flexible pipes 52. One end of the main pipe 51 is connected to a one-way liquid outlet 22, and the other end has multiple outlets that correspond one-to-one with each pipe port 47. Multiple flexible pipes 52 are provided, each flexible pipe 52 corresponding to one of the outlets. One end of each flexible pipe 52 is connected to the corresponding outlet, and the other end is connected to the corresponding pipe port 47.

[0041] The main pipe 51 is connected to the one-way liquid outlet 22, and the main pipe 51 also provides multiple outlets, with multiple flexible tubes 52 corresponding to multiple pipe openings 47. This ensures that the cleaning fluid can be evenly distributed on the bristles, thereby ensuring the coverage area of ​​the pressure roller 61 and ensuring the cleaning effect. At the same time, the flexible tubes 52 are designed to accommodate the movement of the sliding plate 41.

[0042] In some embodiments, the above-mentioned liquid storage tank 20 may be adopted as follows: Figure 1 and Figure 2 The structure shown. See also Figure 1and Figure 2 The top of the liquid storage tank 20 is equipped with a sealing cap 23.

[0043] The sealing cap 23 can be threadedly connected to the liquid storage tank 20, and cleaning fluid can be injected into the liquid storage tank 20 by opening the sealing cap 23.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Cleaning device for the press rolls of a press, characterized in that include: A mounting plate is used to fix the screen pressing machine to the frame; the bottom of the mounting plate is provided with a slide rail that is arranged in the same direction as the screen pressing channel; A liquid storage tank is fixedly mounted on the mounting plate; the liquid storage tank has a one-way air inlet and a one-way liquid outlet; A pressurization structure is provided in the liquid storage tank and has a contact end that can automatically extend out of the liquid storage tank; A push assembly is slidably connected to the slide rail; the push assembly has a push portion corresponding to the contact end; the push assembly also has a brush portion corresponding to the pressure roller; the push assembly is used to drive the brush portion to intermittently contact the pressure roller; The liquid transfer structure is connected to the one-way liquid outlet and to the pipe opening provided on the brush part. During the process of the push assembly approaching and contacting the pressure roller, the push part presses the contact end to increase the pressure on the liquid storage tank, and the cleaning liquid squeezed out from the one-way liquid outlet is transferred to the brush part through the liquid transfer structure.

2. A cleaning device for a press roll of a web press according to claim 1, characterized in that The booster structure includes: A fixed cylinder is fixedly mounted on the liquid storage tank, and its axis is parallel to the direction of the slide rail; one end of the fixed cylinder extends out of the liquid storage tank; the outer end of the fixed cylinder is provided with an outer limiting ring, and the inner end of the fixed cylinder is provided with an inner limiting ring; A piston is slidably disposed in the fixed cylinder; one end of the piston is connected to an extension column that can extend out of the liquid storage tank through the outer limiting ring; the extension column is the contact end; A spring is disposed in the fixed cylinder, one end of the spring abutting against the piston and the other end abutting against the inner limiting ring located in the liquid storage tank; the spring is used to spring the piston, so that the extension cylinder has a tendency to continuously extend outward.

3. The cleaning device for a press roll of a net press according to claim 1, characterized in that The pushing assembly includes: A sliding plate is located below the mounting plate and is slidably mounted on the slide rail; a vertical plate is fixed to one end of the sliding plate away from the pressure roller; a push column is provided on the vertical plate along the direction of the slide rail, and the push column is the push part; A telescopic structure is fixed to the bottom end of the mounting plate and connected to the sliding plate, used to drive the sliding plate to move; The mounting bracket is fixed to the sliding plate and has an extension end extending in the direction of the pressure roller; A long strip brush is fixedly mounted on the extended end, and the long strip brush is the brush part; The mounting plate has a long slot for the upright plate to pass through and for the upright plate to move.

4. The cleaning device for a press roll of a net press according to claim 3, characterized in that The long brush is positioned diagonally downwards.

5. The cleaning device for a press roll of a web press according to claim 3, characterized in that The jacking column is a screw rod, which is adapted to be connected to the threaded hole provided on the vertical plate.

6. The cleaning device for a press roll of a web press according to claim 3, characterized in that The telescopic structure is an electric push rod.

7. The cleaning device for a press roll of a web press according to claim 1, characterized in that Multiple openings are provided, and each opening is spaced apart along the length of the brush section.

8. A cleaning device for a press roll of a web press according to claim 7, characterized in that The liquid transfer structure includes: The main pipe has one end connected to the one-way liquid outlet, and the other end has multiple outlets that can correspond one-to-one with each pipe opening; The system comprises multiple flexible tubes, each corresponding to a specific outlet. One end of each flexible tube is connected to the corresponding outlet, and the other end is connected to the corresponding pipe opening.

9. The cleaning device for a press roll of a web press according to claim 1, characterized in that The storage tank is equipped with a sealing cap at the top.