A paper stabilizer

Abstract

The utility model provides a paper stabilizer, including a main structure; a pipeline assembly, the pipeline assembly includes an exhaust pipeline, an air supply pipeline and a cylinder exhaust pipeline, the cylinder exhaust pipeline is located in the lower half of the pipeline assembly, the exhaust pipeline and the air supply pipeline are located in the upper half of the pipeline assembly, the first end of the pipeline assembly is an air supply port, the second end of the pipeline assembly is an exhaust port, when the valve is in a closed state, the first sub-chamber is connected to the exhaust port, and the second sub-chamber is not connected to the exhaust port, when the valve is in an open state, the first sub-chamber and the second sub-chamber are both connected to the exhaust port. By integrating the exhaust pipeline, the air supply pipeline and the cylinder exhaust pipeline in the pipeline assembly, the structure of the paper stabilizer is made more compact, and a valve is set in the cylinder exhaust pipeline, according to different production conditions of the paper stabilizer, by controlling the opening and closing of the valve, the vacuum roller is acted on during paper feeding and paper stabilization of the paper machine, so that negative pressure is generated in the corresponding area, so that the paper web below the vacuum roller is closely attached to the surface of the vacuum roller.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking, in particular to a paper stabilizer. Background Art

[0002] In the modern papermaking process, paper webs need to go through multiple processes, including pressing, drying and calendering. During these transmission and processing stages, the stability and flatness of the paper web are crucial to the quality of the final product. In order to prevent the paper web from shifting, wrinkling or corrugating during movement, thereby affecting the accuracy of each process, paper stabilizers are widely used. However, traditional paper stabilizers have some limitations in actual operation, especially in terms of adaptability to different negative pressure requirements during the paper threading and stabilization stages.

[0003] Existing paper stabilizers usually use fixed negative pressure to ensure the stability of the paper web, but due to the single negative pressure setting, when the negative pressure is small, the paper web is prone to slipping; when the negative pressure is too large, it may cause problems such as paper breakage and paper defects. This inflexible negative pressure control method limits the effectiveness of the paper stabilizer under different production conditions and cannot meet the needs of efficient and continuous production. Utility Model Content

[0004] The main purpose of the utility model is to provide a paper stabilizer, aiming to solve the problem that the existing paper stabilizer has poor flexibility during the paper web conveying process.

[0005] To achieve the above object, the utility model provides a paper stabilizer, which is arranged in an area surrounded by a first drying cylinder, a second drying cylinder and a vacuum roller, and comprises:

[0006] A main structure, the main structure comprising a first side box, a second side box, a first sealing plate, a second sealing plate and a third sealing plate, the first side box being arranged between the first drying cylinder and the vacuum roller, the second side box being arranged between the second drying cylinder and the vacuum roller, the first sealing plate being arranged at the front end of a triangular area surrounded by the first drying cylinder, the second drying cylinder and the vacuum roller, the second sealing plate being arranged at the top of a paper guiding partition inside the vacuum roller, and the second sealing plate being adapted to the vacuum roller, the third sealing plate being arranged at the rear end of a triangular area surrounded by the first drying cylinder, the second drying cylinder and the vacuum roller, the first side box, the second side box, the first sealing plate, the second sealing plate and the third sealing plate being arranged together to form an inner cavity;

[0007] A pipeline assembly, the pipeline assembly passes through the main structure, the pipeline assembly includes an exhaust pipeline, an air supply pipeline and a cylinder exhaust pipeline, the cylinder exhaust pipeline is located in the lower half of the pipeline assembly, the exhaust pipeline and the air supply pipeline are located in the upper half of the pipeline assembly, the first end of the pipeline assembly is an air supply port, the second end of the pipeline assembly is an exhaust port, the first end of the exhaust pipeline is closed, the second end of the exhaust pipeline is close to the exhaust port, the first end of the air supply pipeline is close to the air supply port, and the second end of the air supply pipeline is closed;

[0008] A valve is provided in the cylinder exhaust duct, the valve opening angle range is 0 degrees or 90 degrees, when the valve is in a closed state, the first sub-chamber is connected to the exhaust port of the cylinder exhaust duct, and the second sub-chamber is not connected to the exhaust port, when the valve is in an open state, the first sub-chamber and the second sub-chamber are both connected to the exhaust port, the first sub-chamber corresponds to the paper feeding area of ​​the paper stabilizer, and the second sub-chamber corresponds to the paper stabilizing area of ​​the paper stabilizer.

[0009] Optionally, the air exhaust port and the air supply port are arranged on different sides of the pipeline assembly.

[0010] Optionally, the paper stabilizer further comprises:

[0011] A driving mechanism is connected to the valve to control the opening angle range of the valve to be 0 degree or 90 degrees.

[0012] Optionally, the driving mechanism is a cylinder or a motor.

[0013] Optionally, a paper guiding sealing strip is provided on the second side box body.

[0014] Optionally, a scraper clamp and a scraper matched with the scraper clamp are further provided on the side of the second side box facing the vacuum roller.

[0015] Optionally, a plurality of seals are stacked at the first side box body, and when the seals are in a sealed state, the interior of a region of the paper stabilizer close to a peeling point in the descending zone is isolated from external airflow.

[0016] Optionally, the sealing element is a four-layer Teflon sealing strip.

[0017] Optionally, the paper stabilizer further comprises an exhaust fan, and the exhaust fan is arranged at the exhaust port.

[0018] Optionally, the paper stabilizer further includes an air blower, and the air blower is arranged at the air supply port.

[0019] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0020] The utility model provides a paper stabilizer, comprising a main structure; a pipeline assembly, the pipeline assembly runs through the main structure, the pipeline assembly comprises an exhaust pipeline, an air supply pipeline and a cylinder exhaust pipeline, the cylinder exhaust pipeline is located in the lower half of the pipeline assembly, the exhaust pipeline and the air supply pipeline are located in the upper half of the pipeline assembly, the first end of the pipeline assembly is an air supply port, the second end of the pipeline assembly is an exhaust port, the first end of the exhaust pipeline is closed, the second end of the exhaust pipeline is close to the exhaust port, the air supply pipeline is The first end of the pipeline is close to the air supply port, and the second end of the air supply pipeline is closed; a valve is arranged in the cylinder exhaust pipeline, and the valve opening angle range is 0 degrees or 90 degrees. When the valve is in a closed state, the first sub-chamber is connected to the exhaust port of the cylinder exhaust pipeline, and the second sub-chamber is not connected to the exhaust port. When the valve is in an open state, both the first sub-chamber and the second sub-chamber are connected to the exhaust port. The first sub-chamber corresponds to the paper feeding area of ​​the paper stabilizer, and the second sub-chamber corresponds to the paper stabilizing area of ​​the paper stabilizer. In the embodiment of the utility model, the exhaust pipeline, the air supply pipeline and the cylinder exhaust pipeline are integrated into the pipeline assembly, so that the structure of the paper stabilizer is more compact, and a valve is arranged in the cylinder exhaust pipeline, and the valve opening angle can be 0 degrees or 90 degrees. In this way, according to different production conditions of the paper stabilizer, by controlling the opening and closing of the valve, it can act on the vacuum roller during paper feeding and paper stabilization of the paper machine, so that negative pressure is generated in the corresponding area, so that the paper web under the vacuum roller is close to the surface of the vacuum roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is one of the structural schematic diagrams of a paper stabilizer provided in an embodiment of the utility model;

[0023] Figure 2 This is the second structural schematic diagram of a paper stabilizer provided by an embodiment of the utility model;

[0024] Figure 3 This is a third structural diagram of a paper stabilizer provided by an embodiment of the utility model

[0025] Figure 4 This is the fourth structural schematic diagram of a paper stabilizer provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0026] All technical and scientific terms used herein have the same meanings as those commonly understood by technicians in the technical field of the present application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0029] The utility model provides a paper stabilizer, such as Figures 1 to 4 As shown, the paper stabilizer is arranged in the area surrounded by the first drying cylinder 20, the second drying cylinder 30 and the vacuum roller 40, and the paper stabilizer includes:

[0030] A main body structure, the main body structure comprises a first side box 101, a first sealing plate 102, a second side box 103, a second sealing plate and a third sealing plate, the first side box 101 is arranged between the first drying cylinder 20 and the vacuum roller 40, the second side box 103 is arranged between the second drying cylinder 30 and the vacuum roller 40, the first sealing plate 102 is arranged at the front end of the triangular area surrounded by the first drying cylinder 20, the second drying cylinder 30 and the vacuum roller 40, the second sealing plate is arranged at the top of the paper guiding partition inside the vacuum roller 40, and the second sealing plate is adapted to the vacuum roller 40, the third sealing plate is arranged at the rear end of the triangular area surrounded by the first drying cylinder 20, the second drying cylinder 30 and the vacuum roller 40, the first side box 101, the second side box 103, the first sealing plate 102, the second sealing plate and the third sealing plate cooperate to form an inner cavity;

[0031] A pipeline assembly 104, wherein the pipeline assembly 104 passes through the main structure, and the pipeline assembly 104 comprises an exhaust pipeline 1041, an air supply pipeline 1042 and a cylinder exhaust pipeline 1043, wherein the cylinder exhaust pipeline 1043 is located at the lower half of the pipeline assembly, and the exhaust pipeline 1041 and the air supply pipeline 1042 are located at the upper half of the pipeline assembly, and the upper half of the pipeline assembly 104 and the lower half of the pipeline assembly 104 are separated by a partition, the first end of the pipeline assembly 104 is an air supply port, and the second end of the pipeline assembly 104 is an exhaust port, the first end of the exhaust pipeline 1041 is closed, and the second end of the exhaust pipeline 1041 is close to the exhaust port, the first end of the air supply pipeline 1042 is close to the air supply port, and the second end of the air supply pipeline 1042 is closed;

[0032] Valve 105, the valve 105 is arranged on the cylinder exhaust duct 1043, the opening angle range of the valve 105 is 0 degree or 90 degree, when the valve 105 is in the closed state, the first sub-chamber is connected with the exhaust port of the cylinder exhaust duct, and the second sub-chamber is not connected with the exhaust port, when the valve 105 is in the open state, the first sub-chamber and the second sub-chamber are both connected with the exhaust port, the first sub-chamber corresponds to the paper feeding area of ​​the paper stabilizer, and the second sub-chamber corresponds to the paper stabilizing area of ​​the paper stabilizer.

[0033] In the embodiment of the utility model, the exhaust pipe 1041, the air supply pipe 1042 and the cylinder exhaust pipe 1043 are integrated in the pipe assembly 104, so that the structure of the paper stabilizer is more compact, and a valve 105 is arranged in the cylinder exhaust pipe 1043, and the opening angle of the valve 105 can be 0 degrees or 90 degrees. In this way, according to different production conditions of the paper stabilizer, by controlling the opening and closing of the valve 105, the vacuum roller 40 can be acted on during paper feeding and paper stabilization of the paper machine, so that negative pressure is generated in the corresponding area, so that the paper web below the vacuum roller 40 is closely attached to the surface of the vacuum roller 40.

[0034] Optionally, the exhaust port and the air supply port are arranged on different sides of the pipeline assembly 104. By placing the air supply port and the exhaust port on different sides, a more uniform airflow environment can be formed. The air supply side provides a Coanda effect (the phenomenon that the fluid tends to flow along the wall), and the exhaust side produces an adsorption effect. Under the influence of the dual effect, the negative pressure value of the peeling zone is greatly increased. At the moment when the paper web is separated from the first drying, it is affected by the strong negative pressure and is tightly adsorbed on the dryer. This combination can more effectively fix the position of the paper web and prevent it from sliding or deflecting during high-speed transmission, thereby reducing the wrinkles and ripples that may appear on the surface of the paper web. At the same time, this also helps to maintain the flatness of the paper web and improve the processing quality of subsequent processes. In addition, the air pressure conditions required by the paper web are different at different stages of paper feeding and paper stabilization. The air supply and exhaust configurations on different sides can be adjusted separately, making it easier for the system to adapt to the needs of different production stages and provide accurate and flexible air pressure support. For example, the air pressure adjustment during the start and stop process is more flexible and efficient.

[0035] Optionally, the paper stabilizer further comprises: a driving mechanism, wherein the driving mechanism is connected to the valve 105 to control the opening angle range of the valve 105 to be 0 degree or 90 degrees.

[0036] In this example, the opening angle range of valve 105 is controlled to be 0 degrees by the driving mechanism, that is, valve 105 is controlled to be in a closed state, at which time the first sub-chamber is connected to the exhaust port of the cylinder exhaust pipeline, and the second sub-chamber is not connected to the exhaust port; the opening angle range of valve 105 is controlled to be 90 degrees by the driving mechanism, that is, valve 105 is controlled to be in an open state, at which time both the first sub-chamber and the second sub-chamber are connected to the exhaust port, so that by controlling the opening and closing of valve 105, it acts on the vacuum roller when the paper machine is feeding and stabilizing the paper, so that negative pressure is generated in the corresponding area, thereby realizing flexible negative pressure control and making the paper web under the vacuum roller close to the surface of the vacuum roller.

[0037] Wherein, the driving mechanism is a cylinder or a motor, which further improves the flexibility of negative pressure control in the paper stabilizing area, is conducive to more accurate control of local air pressure, and enhances the stability of the entire system.

[0038] Optionally, the paper stabilizer further comprises an exhaust fan, which is arranged at an exhaust port. The exhaust fan may be a negative pressure fan, which works in a similar way to a vacuum cleaner, and absorbs air by generating negative pressure, thereby fixing the paper web. The internal negative pressure of the paper stabilizer is adjusted by the exhaust fan to ensure that a stable and appropriate negative pressure level is maintained, so that the paper web can be reliably fixed at a specified position. The exhaust port may be located on the transmission side of the paper stabilizer to reduce the interference of the pipeline;

[0039] Furthermore, the paper stabilizer also includes an air supply fan, which is arranged at the air supply port. The air supply fan can be a blower to generate a strong and uniform airflow. The air supply fan can adjust the air volume and air pressure according to demand. In this way, the air supply fan blows out air through the air supply pipeline, and the exhaust fan produces an adsorption effect through the exhaust port. Under the influence of the double effect, the negative pressure value of the peeling zone is greatly increased, so that the stripping zone within the aluminum material range at the top of the paper stabilizing zone forms a Coanda effect, so that the paper web is affected by the strong negative pressure at the moment of leaving the first drying, and is tightly adsorbed on the dryer. This combination can more effectively fix the position of the paper web and prevent it from sliding or deflecting during high-speed transmission, thereby reducing the wrinkles and ripples that may appear on the surface of the paper web. At the same time, this also helps to maintain the flatness of the paper web and improve the processing quality of subsequent processes. In addition, the air pressure conditions required by the paper web are different at different stages of paper feeding and paper stabilization. The air supply and exhaust configurations on different sides can be adjusted separately, so that the system can more easily adapt to the needs of different production stages and provide accurate and flexible air pressure support.

[0040] Optionally, a paper drawing sealing strip is provided on the second side box 103. The paper web may deviate due to inertia or mechanical problems. By providing the paper drawing sealing strip, a closed paper drawing area is formed on the side of the paper stabilizer during paper drawing, so that the paper web is closely attached to the dryer wire under the action of negative pressure when it leaves the second drying cylinder 30, thereby avoiding wrinkles or breaks in the paper web, ensuring that the paper web can be accurately transferred to the next step, and improving the continuity and efficiency of the production line.

[0041] Optionally, a scraper clamp and a scraper adapted to the scraper clamp are also provided on the side of the second side box 103 facing the vacuum roller 40. The scraper rotates close to the surface of the roller or dryer, and removes pulp residues, impurities or other sediments adhering to it by physical cutting or peeling. This helps to keep the roller surface clean and ensure the smooth progress of subsequent processes. By keeping the roller clean, the scraper reduces the friction and tension fluctuations of the paper sheet caused by surface impurities, thereby reducing the possibility of paper sheet damage or breakage and improving the stability of the overall operation of the production line. The scraper clamp is used to accurately fix and support the scraper to ensure that the scraper can be close to the surface of the roller or dryer to provide effective and consistent scraping pressure. By adjusting the position and pressure of the scraper clamp, the contact angle and force of the scraper with the working surface can be changed, thereby accurately controlling the scraping effect to meet different process requirements.

[0042] Optionally, a plurality of seals 106 are stacked at the first side box 101 , and when the seals 106 are in a sealed state, the interior of the area of ​​the paper stabilizer close to the peeling point of the descending zone is isolated from the external airflow.

[0043] In this embodiment, sealing plates are used at both ends of the paper stabilizer and the side paper feeding area to isolate the entire interior of the paper stabilizer from the outside world, ensure negative pressure in the entire pocket area of ​​the paper stabilizer, and make the paper web close to the dryer network under the influence of negative pressure in the area between the upper and lower drying cylinders, thereby ensuring the smooth operation of the paper web.

[0044] Optionally, the seal 106 is a four-layer Teflon sealing strip to improve the sealing performance. The seal 106 adopts an airbag top pressure type rotary seal, and the airbag can be inflated and deflated by an air supply system (such as an air pump or a compressor). When the airbag is inflated, the inflated airbag pushes out the aluminum profile, so that the sealing strip is close to the dryer net; when the airbag is deflated, the aluminum profile can be retracted to facilitate the replacement of the sealing strip. The airbag top pressure type rotary seal achieves a high-efficiency, low-wear and long-life sealing effect by providing uniform and adjustable pressure, improves the reliability of the equipment, reduces maintenance costs, and brings important improvements to modern industrial production. In addition, the seal adopts a four-layer Teflon sealing material, which is more wear-resistant and has better sealing performance, ensuring that the paper web leaves the upper drying cylinder and enters the negative pressure in the descending zone, thereby increasing the adsorption force between the paper sheet and the dryer net.

[0045] Optionally, the paper stabilizer further includes a wind pressure sensor, which is disposed in the inner cavity. Different measuring points are provided in different areas inside the paper stabilizer, and the vacuum pressure is automatically transmitted to the distributed control system (DCS) through the hollow tube, without manual measurement. This improves the convenience of using the paper stabilizer.

[0046] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A paper stabilizer, characterized in that: The paper stabilizer is arranged in an area surrounded by the first drying cylinder, the second drying cylinder and the vacuum roller, and the paper stabilizer comprises: A main structure, the main structure comprising a first side box, a second side box, a first sealing plate, a second sealing plate and a third sealing plate, the first side box being arranged between the first drying cylinder and the vacuum roller, the second side box being arranged between the second drying cylinder and the vacuum roller, the first sealing plate being arranged at the front end of a triangular area surrounded by the first drying cylinder, the second drying cylinder and the vacuum roller, the second sealing plate being arranged at the top of a paper guiding partition inside the vacuum roller, and the second sealing plate being adapted to the vacuum roller, the third sealing plate being arranged at the rear end of a triangular area surrounded by the first drying cylinder, the second drying cylinder and the vacuum roller, the first side box, the second side box, the first sealing plate, the second sealing plate and the third sealing plate being arranged together to form an inner cavity; A pipeline assembly, the pipeline assembly passes through the main structure, the pipeline assembly includes an exhaust pipeline, an air supply pipeline and a cylinder exhaust pipeline, the cylinder exhaust pipeline is located in the lower half of the pipeline assembly, the exhaust pipeline and the air supply pipeline are located in the upper half of the pipeline assembly, the first end of the pipeline assembly is an air supply port, the second end of the pipeline assembly is an exhaust port, the first end of the exhaust pipeline is closed, the second end of the exhaust pipeline is close to the exhaust port, the first end of the air supply pipeline is close to the air supply port, and the second end of the air supply pipeline is closed; A valve is provided in the cylinder exhaust duct, the valve opening angle range is 0 degrees or 90 degrees, when the valve is in a closed state, the first sub-chamber is connected to the exhaust port of the cylinder exhaust duct, and the second sub-chamber is not connected to the exhaust port, when the valve is in an open state, the first sub-chamber and the second sub-chamber are both connected to the exhaust port, the first sub-chamber corresponds to the paper feeding area of ​​the paper stabilizer, and the second sub-chamber corresponds to the paper stabilizing area of ​​the paper stabilizer.

2. The paper stabilizer according to claim 1, characterized in that: The air exhaust port and the air supply port are arranged on different sides of the pipeline assembly.

3. The paper stabilizer according to claim 1, characterized in that: The paper stabilizer also includes: A driving mechanism is connected to the valve to control the opening angle range of the valve to be 0 degree or 90 degrees.

4. The paper stabilizer according to claim 3, characterized in that: The driving mechanism is a cylinder or a motor.

5. The paper stabilizer according to claim 1, characterized in that: A paper guiding sealing strip is arranged on the second side box body.

6. The paper stabilizer according to claim 1, characterized in that: A scraper clamp and a scraper matched with the scraper clamp are also arranged on the side of the second side box facing the vacuum roller.

7. The paper stabilizer according to claim 1, characterized in that: A plurality of sealing members are stacked at the first side box body, and when the sealing members are in a sealed state, the interior of the area of ​​the paper stabilizer close to the peeling point of the descending zone is isolated from the external airflow.

8. The paper stabilizer according to claim 7, characterized in that: The sealing element is a four-layer Teflon sealing strip.

9. The paper stabilizer according to claim 1, characterized in that: The paper stabilizer further includes an exhaust fan, and the exhaust fan is arranged at the exhaust port.

10. The paper stabilizer according to claim 1, characterized in that: The paper stabilizer further includes an air blower, and the air blower is arranged at the air supply port.

Images