A paper machine dryer fabric on-line cleaning system
By introducing a servo motor-driven trolley and a multi-angle nozzle design into the online cleaning system for paper machine dry wire, the problem of dead corners in dry wire cleaning has been solved, achieving efficient cleaning of the dry wire surface and improving paper quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LONGKOU YULONG PAPER CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-19
AI Technical Summary
Existing online dry wire cleaning systems have blind spots when cleaning residual pulp fibers in the dry wire mesh, which affects papermaking quality and efficiency.
An online cleaning system for paper machine dry wire was designed. A servo motor drives a trolley to move the nozzle laterally along the surface of the dry wire. Combined with the use of air knife and nozzle, the nozzle achieves multi-angle spraying through the design of guide cover and wave groove, expanding the cleaning range. The spray distance and angle are adjusted by pressurization component to improve cleaning efficiency.
It effectively removes fiber residue from the surface of the dry wire, improves cleaning efficiency, avoids cleaning dead spots, and ensures paper quality and production continuity.
Smart Images
Figure CN224378602U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of papermaking machine technology, specifically to an online cleaning system for papermaking machine wire. Background Technology
[0002] In the papermaking process, if the fibers on the forming wire cannot be removed in a timely and effective manner, the fibers remaining in the pulp will have an adverse effect on the papermaking process and the quality of the paper sheet. They will contaminate the forming wire, felt and dry wire, adhere to the pipes of the papermaking machine and make cleaning difficult, and be carried into the paper surface and affect the quality of the paper sheet. Therefore, it is necessary to use an online dry wire cleaning system.
[0003] According to a public notice (Announcement No.: CN218436390U) of an online cleaning system for paper machine dry wires, the above application describes a system that eliminates the need for equipment shutdown, achieves high cleaning efficiency, eliminates the need for chemical reagents, saves energy and is environmentally friendly. It utilizes high-pressure gas to accelerate the evaporation of moisture from the dry wire surface, reduces steam consumption in the drying section, saves energy, and prevents dirt from remaining on the dry wire surface, thus improving paper quality.
[0004] However, in actual use, the above-mentioned equipment achieves the washing operation of the dry wire by the cleaning nozzles moving in a straight reciprocating motion along the inner wall of the bin. However, the residual pulp fibers in the mesh of the dry wire are attached in different positions. The cleaning effect of fixed angle and position washing on the entire surface of the dry wire is limited, and cleaning dead corners are easy to occur, which will still affect the subsequent papermaking operation. Therefore, we propose an online cleaning system for papermaking dry wire. Utility Model Content
[0005] The purpose of this invention is to provide an online cleaning system for the dry wire of a papermaking machine to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an online cleaning system for the dry wire of a paper machine, comprising a bin body, a servo motor fixedly installed on the inner wall of one end of the bin body, a threaded rod fixedly connected to the output end of the servo motor, a trolley slidably installed on the inner wall of the bin body, a control seat provided on the side of the trolley away from the bin body, a mounting seat fixedly connected to the bottom of the control seat via a hydraulic rod, an external air knife fixedly connected to the side wall of the control seat, a front air knife and a rear air knife fixedly installed on both sides of the mounting seat, a telescopic hose fixedly connected to the bottom of the mounting seat, a nozzle fixedly connected to the other end of the telescopic hose, a flow guiding assembly for fan-shaped guidance of the nozzle provided at the bottom of the mounting seat, the flow guiding assembly including a guide cover fixedly connected to the side wall of the bin body, and a corrugated groove formed on the inner wall of the guide cover.
[0007] Preferably, a slide bar is fixedly installed on the outer wall of the nozzle, a U-shaped frame is sleeved on the outer wall of the slide bar, a T-shaped rod is fixedly connected to the top of the U-shaped frame, a straight groove is opened on the inner wall of the end of the U-shaped frame away from the T-shaped rod, an elastic telescopic rod is fixedly installed on the end of the T-shaped rod away from the U-shaped frame, a roller is rotatably installed on the end of the elastic telescopic rod, and an L-shaped rod is fixedly installed on the bottom outer wall of the mounting base.
[0008] Preferably, the telescopic hose and the nozzle are provided in multiple sets, and the multiple sets of telescopic hose and nozzle are evenly distributed in a linear array on the bottom outer wall of the mounting base.
[0009] Preferably, the outer diameter of the slide rod is adapted to the inner diameter of the straight groove, and the slide rod is disposed inside the straight groove.
[0010] Preferably, the T-shaped rod includes a T-shaped portion and a rectangular portion. The outer wall of the guide cover near the nozzle has a rectangular groove with a width that matches the width of the rectangular portion of the T-shaped rod. The two sides of the T-shaped portion of the T-shaped rod are in contact with the inner surface of the guide cover, and the side edges of the T-shaped rod are rounded.
[0011] Preferably, the bottom outer wall of the mounting base is provided with a pressure assembly, the pressure assembly includes a mounting block fixedly installed on the bottom outer wall of the mounting base, a rotating rod rotatably installed on the inner wall of the mounting block, a clamping claw passing through and fixedly installed on the rotating rod, a coil spring sleeved on the outer wall of the rotating rod, and a retaining ring fixedly installed on the side wall of the T-shaped rod.
[0012] Preferably, the number of grippers is set to two sets, and the two sets of grippers are symmetrically arranged with the central axis of the mounting block as the axis of symmetry. The tops of the two sets of grippers are both located in the binding ring, and the width of the internal cavity of the binding ring is smaller than the outer diameter of the telescopic hose.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: Through the mutual cooperation and transmission of the guide cover, wave groove, T-shaped rod, U-shaped frame, straight groove, slide rod, elastic telescopic rod, roller, and L-shaped rod, when the trolley moves back and forth and washes along the surface of the dry net, it cooperates with the control seat and mounting seat to drive the T-shaped rod to move laterally within the guide cover. With the cooperation of the elastic telescopic rod and roller, the T-shaped part of the T-shaped rod always fits against the surface of the wave groove and moves up and down. At this time, with the cooperation of the U-shaped frame and straight groove, the slide rod drives the nozzle to swing slightly in a fan shape with its hinge point with the L-shaped rod as the rotation center, thereby expanding the spray range of the nozzle and further improving the cleaning range of the nozzle on the dry net while changing the angle of the water jet impacting the dry net, thus improving the cleaning efficiency of the device for fiber residue on the surface of the dry net. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a side view of the trolley structure of this utility model;
[0016] Figure 3 This is a bottom view of the control seat structure of this utility model;
[0017] Figure 4 This is a cross-sectional view of the guide cover of this utility model;
[0018] Figure 5 This is a partial three-dimensional structural diagram of the nozzle of this utility model;
[0019] Figure 6 This is a partial three-dimensional structural diagram of the U-shaped frame and gripper of this utility model.
[0020] The components represented by each number in the attached diagram are listed below: 1. Chamber body; 2. Servo motor; 3. Threaded rod; 4. Trolley; 5. Control base; 6. Mounting base; 7. External air knife; 8. Front air knife; 9. Rear air knife; 10. Telescopic hose; 11. Nozzle; 12. Guide cover; 13. Corrugated groove; 14. T-shaped rod; 15. U-shaped frame; 16. Straight groove; 17. Slide rod; 18. Elastic telescopic rod; 19. Roller; 20. L-shaped rod; 21. Mounting block; 22. Rotating rod; 23. Gripper; 24. Coil spring; 25. Binding ring. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figures 1-6 The diagram shows an online cleaning system for a paper machine dry wire, including a chamber 1. A servo motor 2 is fixedly installed on the inner wall of one end of the chamber 1. A threaded rod 3 is fixedly connected to the output end of the servo motor 2. A trolley 4 is slidably installed on the inner wall of the chamber 1. A control seat 5 is provided on the side of the trolley 4 away from the chamber 1. An installation seat 6 is fixedly connected to the bottom of the control seat 5 through a hydraulic rod. An external air knife 7 is fixedly connected to the side wall of the control seat 5. A front air knife 8 and a rear air knife 9 are fixedly installed on both sides of the installation seat 6. One end of a telescopic hose 10 is fixedly connected to the bottom of the installation seat 6. A nozzle 11 is fixedly connected to the other end of the telescopic hose 10. A flow guiding assembly for fan-shaped guidance of the nozzle 11 is provided at the bottom of the installation seat 6. The flow guiding assembly includes a guide cover 12 fixedly connected to the side wall of the chamber 1. A corrugated groove 13 is formed on the inner wall of the guide cover 12.
[0023] Please see Figure 1 , Figure 2 , Figure 3 The trolley 4 has a threaded slider that matches the threaded rod 3 on its side, and a horizontal limiting structure is provided between its side wall and the inner surface of the chamber 1. When the servo motor 2 starts, the threaded rod 3 rotates and drives the trolley 4 to move laterally along the inner surface of the chamber 1, without rotating with the rotation of the threaded rod 3, so as to drive the cleaning equipment to move laterally on the surface of the dry net, thereby completing the online cleaning of the dry net. At the same time, the servo motor 2, control base 5, hydraulic rod, external air knife 7, front air knife 8, rear air knife 9 and nozzle 11 are all connected to the water pump and are electrically connected to the control terminal so that the staff can remotely control the equipment and ensure its normal operation.
[0024] Specifically, the external air knife 7, the front air knife 8, and the rear air knife 9 are all connected to the air pump through the top hose to generate a high-speed airflow on the surface of the dry net. This not only blocks the splashing liquid generated during rinsing, but also the airflow blown out by the air knife can dry the dry net after rinsing to a certain extent, reducing the residue of impurities. At the same time, the end of the telescopic hose 10 away from the nozzle 11 is connected to an external water pump through a pipe to continuously supply water to the nozzle 11.
[0025] A slide bar 17 is fixedly installed on the outer wall of the nozzle 11. A U-shaped frame 15 is fitted on the outer wall of the slide bar 17. A T-shaped rod 14 is fixedly connected to the top of the U-shaped frame 15. A straight groove 16 is opened on the inner wall of the end of the U-shaped frame 15 away from the T-shaped rod 14. An elastic telescopic rod 18 is fixedly installed on the end of the T-shaped rod 14 away from the U-shaped frame 15. A roller 19 is rotatably installed on the end of the elastic telescopic rod 18. An L-shaped rod 20 is fixedly installed on the bottom outer wall of the mounting base 6.
[0026] Please see Figure 3 , Figure 4 , Figure 5 The T-shaped rod 14 is located inside the guide cover 12. With the setting of the wave groove 13, the T-shaped rod 14 continuously moves up and down inside the guide cover 12 when the mounting base 6 moves laterally. Specifically, the roller 19 is connected to the elastic telescopic rod 18 through the outer U-shaped part. With the setting of the elastic telescopic rod 18, the top of the T-shaped rod 14 can always be attached to the inner surface of the guide cover 12 through the roller 19, so that it can always be attached to the wave groove 13 for movement.
[0027] Multiple sets of telescopic hoses 10 and nozzles 11 are provided, and multiple sets of telescopic hoses 10 and nozzles 11 are evenly distributed in a linear array on the bottom outer wall of the mounting base 6.
[0028] Please see Figure 3Multiple sets of telescopic hoses 10 and nozzles 11 can work together to achieve a larger cleaning area on the dry net surface, and their working range is larger, ensuring the cleaning efficiency of the equipment.
[0029] The outer diameter of the slide rod 17 is matched with the inner diameter of the straight groove 16, and the slide rod 17 is disposed inside the straight groove 16.
[0030] Please see Figure 4 , Figure 5 The end of the L-shaped rod 20 is hinged to the nozzle 11, so the slide rod 17 and the straight groove 16 can cooperate with each other. When the U-shaped frame 15 swings up and down with the T-shaped rod 14, the U-shaped frame 15 will generate a pushing force on the slide rod 17 and the end of the nozzle 11. Through the setting of the straight groove 16, the nozzle 11 can swing in a small fan shape with its hinge point with the L-shaped rod 20 as the rotation center, thereby expanding the spray range of the nozzle 11 and further improving the cleaning range of the dry net. At the same time, it changes the angle of the water jet impact on the dry net, improving the cleaning efficiency of the device for fiber residue on the surface of the dry net.
[0031] The T-shaped rod 14 includes a T-shaped part and a rectangular part. The outer wall of the guide cover 12 near the nozzle 11 has a rectangular groove with a width that matches the width of the rectangular part of the T-shaped rod 14. The two sides of the T-shaped part of the T-shaped rod 14 fit against the inner surface of the guide cover 12, and the side edges of the T-shaped rod 14 are rounded.
[0032] Please see Figure 4 , Figure 5 The fit between the two sides of the T-shaped part and the inner surface of the guide cover 12 ensures the relative stability of the T-shaped rod 14 when it moves laterally inside the guide cover 12, thereby ensuring the transmission stability of the nozzle 11 when it swings in a fan shape. The rounded corners of the side edges of the T-shaped rod 14 reduce the wear between it and the wave groove 13, thereby avoiding motion interference and ensuring the smoothness of the nozzle 11 when it swings in a fan shape, thus avoiding jamming.
[0033] The bottom outer wall of the mounting base 6 is provided with a pressure assembly, which includes a mounting block 21 fixedly installed on the bottom outer wall of the mounting base 6. A rotating rod 22 is rotatably installed on the inner wall of the mounting block 21. A clamp 23 is fixedly installed through the rotating rod 22. A coil spring 24 is sleeved on the outer wall of the rotating rod 22. A retaining ring 25 is fixedly installed on the side wall of the T-shaped rod 14.
[0034] Please see Figure 5 , Figure 6The inner wall of the mounting block 21 is provided with a deflection groove whose width is adapted to the width of the top of the gripper 23. The inner walls on both sides of the deflection groove are provided with circular holes with a diameter larger than the outer diameter of the coil spring 24. The two ends of the coil spring 24 are fixedly connected to the inner wall of the end of the circular hole and the arc-shaped outer wall of the rotating rod 22, respectively. This makes the rotating rod 22 always have a tendency to rotate in the opposite direction to achieve a reset when it rotates. Specifically, due to the elastic force of the coil spring 24, the gripper 23 always has a tendency to swing away from the telescopic hose 10. Specifically, the side of the gripper 23 close to the telescopic hose 10 is set in an arc shape to avoid the gripper 23 getting stuck when it contacts the telescopic hose 10.
[0035] There are two sets of grippers 23, and the two sets of grippers 23 are symmetrically arranged with the central axis of the mounting block 21 as the axis of symmetry. The tops of the two sets of grippers 23 are both located in the clamping ring 25, and the width of the internal cavity of the clamping ring 25 is smaller than the outer diameter of the telescopic hose 10.
[0036] Please see Figure 5 , Figure 6 Since the clamping ring 25 is fixedly connected to the T-shaped rod 14, when the T-shaped rod 14 reciprocates inside the guide cover 12, the clamping ring 25 will reciprocate up and down on the outside of the clamp 23. At this time, due to the limitation of the internal cavity width of the clamping ring 25, while the clamping ring 25 slides along the outer surface of the clamp 23, it drives the clamp 23 to swing towards the telescopic hose 10 with the rotating rod 22 as the rotation center, thereby clamping the telescopic hose 10 and reducing the water passage area inside the telescopic hose 10, thus achieving a slight pressurization effect inside the telescopic hose 10, thereby changing the spray distance of the water flow sprayed from the nozzle 11. Since this pressurization process is completed within a certain time, the change in the spray distance of the water flow is gradually formed, so that the water is sprayed in a fan shape when the nozzle 11 is spraying, improving the spray range of the device when cleaning the dry net and the rinsing effect on the fibers attached to the dry net.
[0037] Working principle: During the continuous movement of the dry wire of the paper machine, the servo motor 2 is started by the control terminal to drive the threaded rod 3 to rotate continuously, thereby controlling the trolley 4 to move laterally back and forth along the inner surface of the bin 1. At the same time, the external air pump is started to supply air to the external air knife 7, the front air knife 8 and the rear air knife 9, thereby generating a high-speed airflow on the surface of the dry wire. Meanwhile, water is supplied by the external water pump, and with the help of the telescopic hose 10 and the nozzle 11, the surface of the dry wire is continuously rinsed to remove the residual fibers on the surface of the dry wire.
[0038] As the trolley 4 moves, in conjunction with the control seat 5 and the mounting seat 6, the T-shaped rod 14 moves laterally within the guide cover 12. With the cooperation of the elastic telescopic rod 18 and the roller 19, the T-shaped part of the T-shaped rod 14 always moves up and down in contact with the surface of the wave groove 13. At this time, with the cooperation of the U-shaped frame 15 and the straight groove 16, the slide rod 17 drives the nozzle 11 to swing slightly in a fan shape with its hinge point with the L-shaped rod 20 as the center of rotation, thereby expanding the spray range of the nozzle 11 and achieving efficient cleaning of the dry net.
[0039] At the same time, the high-speed airflow from the front air knife 8 and the rear air knife 9, located outside the nozzle 11, blocks the splashing cleaning water, preventing it from splashing everywhere and affecting the cleaning effect of the dry net. The outer air knife 7, the front air knife 8 and the rear air knife 9 can also blow and dry the surface of the dry net, ensuring that the dry net can be restored to a dry state after rinsing, which is convenient for subsequent use.
[0040] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.
[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An online cleaning system for the dry wire of a papermaking machine, comprising a bin (1), wherein a servo motor (2) is fixedly installed on the inner wall of one end of the bin (1), a threaded rod (3) is fixedly connected to the output end of the servo motor (2), and a trolley (4) is slidably installed on the inner wall of the bin (1), characterized in that: The trolley (4) is provided with a control seat (5) on the side away from the chamber (1). The bottom of the control seat (5) is fixedly connected to a mounting seat (6) by a hydraulic rod. An external air knife (7) is fixedly connected to the side wall of the control seat (5). A front air knife (8) and a rear air knife (9) are fixedly installed on both sides of the mounting seat (6). One end of a telescopic hose (10) is fixedly connected to the bottom of the mounting seat (6). A nozzle (11) is fixedly connected to the other end of the telescopic hose (10). A flow guide assembly for fan-shaped guidance of the nozzle (11) is provided at the bottom of the mounting seat (6). The flow guide assembly includes a guide cover (12) fixedly connected to the side wall of the chamber (1). A wave groove (13) is opened on the inner wall of the guide cover (12).
2. A paper machine fabric on-line cleaning system according to claim 1 characterized in that: A slide bar (17) is fixedly installed on the outer wall of the nozzle (11). A U-shaped frame (15) is fitted on the outer wall of the slide bar (17). A T-shaped rod (14) is fixedly connected to the top of the U-shaped frame (15). A straight groove (16) is opened on the inner wall of the U-shaped frame (15) away from the T-shaped rod (14). An elastic telescopic rod (18) is fixedly installed on the end of the T-shaped rod (14) away from the U-shaped frame (15). A roller (19) is rotatably installed on the end of the elastic telescopic rod (18). An L-shaped rod (20) is fixedly installed on the bottom outer wall of the mounting base (6).
3. A paper machine fabric on-line cleaning system according to claim 1 characterized in that: The telescopic hose (10) and nozzle (11) are provided in multiple sets, and the multiple sets of telescopic hose (10) and nozzle (11) are evenly distributed in a linear array on the bottom outer wall of the mounting base (6).
4. A paper machine fabric on-line cleaning system according to claim 2, characterized in that: The outer diameter of the slide rod (17) is adapted to the inner diameter of the straight groove (16), and the slide rod (17) is disposed inside the straight groove (16).
5. A paper machine fabric on-line cleaning system according to claim 2 characterized in that: The T-shaped rod (14) includes a T-shaped part and a rectangular part. The outer wall of the guide cover (12) near the nozzle (11) has a rectangular groove with a width that matches the width of the rectangular part of the T-shaped rod (14). The two sides of the T-shaped part of the T-shaped rod (14) are in contact with the inner surface of the guide cover (12), and the side edges of the T-shaped rod (14) are rounded.
6. A paper machine fabric on-line cleaning system according to claim 2 characterized in that: The bottom outer wall of the mounting base (6) is provided with a pressure assembly, which includes a mounting block (21) fixedly installed on the bottom outer wall of the mounting base (6). A rotating rod (22) is rotatably installed on the inner wall of the mounting block (21). A clamp (23) is fixedly installed through the rotating rod (22). A coil spring (24) is sleeved on the outer wall of the rotating rod (22). A clamping ring (25) is fixedly installed on the side wall of the T-shaped rod (14).
7. A paper machine fabric on-line cleaning system according to claim 6, characterized in that: The number of grippers (23) is set in two sets, and the two sets of grippers (23) are symmetrically arranged with the central axis of the mounting block (21) as the axis of symmetry. The top of the two sets of grippers (23) is set in the binding ring (25), and the internal cavity width of the binding ring (25) is smaller than the outer diameter of the telescopic hose (10).