Dynamic proportion control method and device for opening degree of suction area of press roll based on servo motor

Abstract

The invention relates to the technical field of vacuum press rolls, and discloses a press roll suction area opening dynamic proportion control method and device based on a servo motor, and the device comprises a vacuum press roll end which is internally provided with the servo motor, a servo motor gear, an adjusting plate internal gear, a suction area adjusting plate, an end sealing system and the like. The control method is composed of a servo motor system, a suction area adjusting system and an end sealing system, and comprises the following two steps: when the air permeability of a blanket is reduced, a servo motor is started, a suction area adjusting plate is driven to rotate through gear transmission, the end sealing system synchronously acts under the action of a compression spring, and the opening degree of a suction area is dynamically adjusted to an adaptive state; after a new blanket is replaced, the servo motor is automatically reset according to standard operation, the suction amount requirements of the blanket in different periods can be dynamically matched, the dewatering effect and the paper quality are improved, the service life of the blanket is prolonged, the cost is reduced, and the suction amount of the blanket in different periods is correctly matched.

Description

Technical Field

[0001] This invention relates to the field of vacuum press roller technology, specifically to a method and device for dynamic ratio control of the suction zone opening of a press roller based on a servo motor. Background Technology

[0002] The width of the vacuum chamber of the vacuum press roll determines the range of vacuum suction applied to the wet paper sheet and blanket. A suitable vacuum chamber width allows the vacuum suction to be evenly distributed on the wet paper sheet and blanket, effectively extracting moisture. If the width is too narrow, it may lead to insufficient dehydration; if the width is too wide, it may cause energy waste and excessive suction on the blanket and wet paper sheet, affecting their quality.

[0004] Therefore, it is necessary to design a dynamic ratio control method and device for the opening of the press roller suction zone based on a servo motor that is practical and effective. Summary of the Invention

[0005] The purpose of this invention is to provide a method and device for dynamic ratio control of the opening of the suction zone of a press roller based on a servo motor, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a method and device for dynamic ratio control of the suction zone opening of a press roller based on a servo motor, comprising a vacuum press roller end, a servo motor mounted on the top of the inner end of the vacuum press roller end, a servo motor gear mounted on the right end of the servo motor, an internal gear of an adjusting plate mounted on the inner end of the vacuum press roller end, an axial fixed seal mounted on the inner end of the vacuum press roller end, an adjusting seal of a suction zone adjusting plate mounted on the inner end of the vacuum press roller end, a suction zone adjustment range opened on the inner end of the vacuum press roller end, a suction zone adjusting plate mounted on the inner end of the vacuum press roller end, a fixed end seal mounted on the inner end of the vacuum press roller end, an adjusting end seal mounted on the surface of the fixed end seal, a circular track of a needle bearing mounted on the inner end of the vacuum press roller end, a needle bearing mounted on the surface of the circular track of the needle bearing mounted on the surface of the needle bearing, a compression spring mounted on the inner end of the adjusting end seal, and an end sealing sleeve mounted on the inner end of the adjusting end seal.

[0007] According to the above technical solution, the servo motor system consists of a servo motor and servo motor gears.

[0008] According to the above technical solution, the suction area adjustment system consists of an internal gear in the adjustment plate, a suction area adjustment plate, a needle bearing, and a needle bearing support.

[0009] According to the above technical solution, the end sealing system consists of a fixed end seal, an adjustable end seal, a compression spring, and an end sealing sleeve.

[0010] Another technical problem to be solved by the present invention is to provide a dynamic ratio control method for the opening of the suction zone of the press roller based on a servo motor, so as to solve the problems mentioned in the background art above;

[0011] To achieve the above objectives, the present invention provides the following technical solution: The above dynamic proportioning control method includes the following steps:

[0012] S1. The device processes the blanket.

[0013] After prolonged use, the internal fibers of the blanket gradually become compacted, and the gaps become clogged with residual impurities, resulting in a significant decrease in air permeability. This hinders efficient moisture removal during the dehydration process, drastically reducing the amount of water removed and impacting overall work efficiency. At this point, the servo motor of the equipment needs to be activated. The power output of the motor drives the servo motor gear to rotate. Because the servo motor gear maintains a precise meshing with the gears inside the suction area adjustment plate, the rotational force of the motor gear is smoothly transmitted to the suction area adjustment plate through the transmission between the teeth. Under the influence of this driving force, the needle bearing on the suction area adjustment plate will make a smooth circular motion along the preset circular track, causing the suction area adjustment plate to make the corresponding angle adjustment. At the same time, the fixed end seal and the adjusting end seal installed on both sides of the suction area adjustment plate will closely follow the position change of the suction area adjustment plate and move synchronously under the elastic force of the compression spring connected to them. When the suction area adjustment plate rotates, the compression spring will extend and retract in real time according to the adjustment range, ensuring that the end seal can always keep in contact with the edge of the suction area adjustment plate, realizing dynamic sealing opening and closing adjustment.

[0014] The entire adjustment process continues until the opening of the suction zone reaches a suitable size that can adapt to the current state of the blanket, which is sufficient to improve the blanket's breathability and dehydration effect. Then, the servo motor stops running, and the adjustment operation is completed.

[0015] S2, Device Reset

[0016] Confirm that the new felt is securely installed, with no loose connections, and that the felt's tension, position, and other parameters meet the equipment's operating requirements. This is to prevent felt installation issues from affecting the servo motor's homing accuracy. Simultaneously, check the area around the servo motor, removing any debris that might obstruct its operation, ensuring a safe and unobstructed operating space. Locate the servo motor's selector switch, typically located on the equipment's control panel or a dedicated control box near the motor. Identify the "off" and "on" positions to avoid accidental operation. Switch the selector switch from the "off" position to the "on" position. When operating the gear, the movements should be smooth to avoid damaging the switch due to excessive force. After turning on the switch, pay attention to any abnormal noises from the servo motor or changes in the indicator lights. If any abnormal noises, sparks, or abnormal flashing of the indicator lights occur, immediately turn off the switch, troubleshoot the problem, and then resume operation. Afterward, the servo motor will enter the automatic return program. During this process, the operator must closely observe the motor's operating status and the position changes of the felt as the motor moves, ensuring that the motor returns to its position according to the preset trajectory and parameters. During the return process, it is strictly forbidden to touch the motor's moving parts and related transmission mechanisms to prevent safety accidents.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0018] 1. In the initial stage of use of a new blanket, due to its excellent water filtration performance, in order to ensure uniform dehydration, the width of the vacuum chamber should be precisely matched with the width of the wet paper sheet. This ensures that the vacuum suction evenly covers the contact area between the wet paper sheet and the blanket, avoiding uneven dehydration caused by improper width. By precisely matching the width, the good water filtration performance of the new blanket can be fully utilized, allowing the wet paper sheet to be dehydrated evenly during the pressing process, improving the flatness and physical properties of the paper, and reducing paper quality problems caused by uneven dehydration.

[0019] 2. In view of the fact that the pores of the blanket become clogged during the middle of its use and the water filtration performance decreases, the present invention can adopt a variable width adjustment strategy. In areas where the blanket is more severely clogged, the width of the vacuum chamber can be appropriately increased to enhance the vacuum suction in that area, so as to overcome the problem of increased dehydration resistance caused by pore clogging. This variable width strategy can effectively compensate for the decline in local water filtration performance of the blanket, maintain the overall dehydration effect to a certain extent, extend the effective service life of the blanket, and reduce the cost increase caused by premature replacement due to the decline in blanket performance.

[0020] 3. This invention combines adjustment and auxiliary measures: During the aging period of blankets, simply adjusting the width of the vacuum chamber to improve the dehydration effect has limited effect. At this time, the adjustment of the vacuum chamber width can be combined with auxiliary measures such as blanket cleaning. First, the blankets are chemically washed or cleaned by other methods to remove some clogging impurities and restore some water filtration performance. Then, according to the actual condition of the blankets after cleaning, the width of the vacuum chamber is adjusted appropriately to enhance the dehydration effect. Although this combination method cannot completely restore the dehydration effect of the blankets when they were new, it can extend the service life of aging blankets to a certain extent, reduce the frequency of blanket replacement, reduce production costs, and maintain a certain level of production efficiency and product quality. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is an overall schematic diagram of the present invention;

[0023] Figure 2 This is a schematic cross-sectional view of the present invention;

[0024] Figure 3 This is a schematic diagram of the suction area adjustment plate of the present invention;

[0025] Figure 4 This is the invention Figure 1 Schematic diagram of side A;

[0026] Figure 5 This is the invention Figure 1 Diagram of side B;

[0027] Figure 6 This is an internal schematic diagram of the present invention.

[0028] In the diagram: 1. Servo motor; 2. Servo motor gear; 3. Gear inside the adjusting plate; 4. Axial fixed seal; 5. Adjusting seal of the suction area adjusting plate; 6. Suction area adjustment range; 7. Suction area adjusting plate; 8. Fixed end seal; 9. Adjusting end seal; 10. Circular track of the adjusting plate needle bearing; 11. Needle bearing; 12. Needle bearing support; 13. Compression spring; 14. End sealing sleeve; 15. Vacuum press roller end. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] This invention provides the following technical solutions:

[0031] Example 1

[0032] Please see Figure 1-6 This invention provides a technical solution: a method and device for dynamic ratio control of the suction zone opening of a vacuum press roller based on a servo motor, comprising a vacuum press roller end 15, a servo motor 1 mounted on the top of the inner end of the vacuum press roller end 15, a servo motor gear 2 mounted on the right end of the servo motor 1, an internal gear 3 of an adjusting plate mounted on the inner end of the vacuum press roller end 15, an axial fixing seal 4 mounted on the inner end of the vacuum press roller end 15, an adjusting seal 5 of a suction zone adjusting plate mounted on the inner end of the vacuum press roller end 15, and an opening in the inner end of the vacuum press roller end 15. The suction zone adjustment range is 6. A suction zone adjustment plate 7 is installed inside the vacuum press roller end 15. A fixed end seal 8 is installed inside the vacuum press roller end 15. An adjustment end seal 9 is installed on the surface of the fixed end seal 8. An adjustment plate needle bearing circular track 10 is installed inside the vacuum press roller end 15. A needle bearing 11 is installed on the surface of the adjustment plate needle bearing circular track 10. A needle bearing support 12 is installed on the surface of the needle bearing 11. A compression spring 13 is installed inside the adjustment end seal 9. An end sealing sleeve 14 is installed inside the adjustment end seal 9.

[0033] According to the above technical solution, the servo motor system consists of a servo motor 1 and a servo motor gear 2.

[0034] According to the above technical solution, the suction area adjustment system consists of an internal gear 3 of the adjustment plate, a suction area adjustment plate 7, a needle bearing 11, and a needle bearing support 12.

[0035] According to the above technical solution, the end sealing system consists of a fixed end seal 8, an adjustable end seal 9, a compression spring 13, and an end sealing sleeve 14.

[0036] Another technical problem to be solved by the present invention is to provide a dynamic ratio control method for the opening of the suction zone of a press roller based on a servo motor. The dynamic ratio control method includes the following steps:

[0037] S1. The device processes the blanket.

[0038] After prolonged use, the internal fibers of the blanket gradually compact, and the gaps become clogged with residual impurities, resulting in a significant decrease in air permeability. This hinders efficient moisture removal during the dehydration process, drastically reducing the amount of water removed and impacting overall work efficiency. At this point, the servo motor 1 of the equipment needs to be activated. The power output from the motor drives the servo motor gear 2 to rotate. Because the servo motor gear 2 maintains precise meshing with the gears within the suction area adjustment plate 7, the rotational force of the motor gear is smoothly transmitted to the suction area adjustment plate 7 through the transmission between the teeth. Under this driving force, the needle-shaped... The bearing 11 will move smoothly in a circular motion along the preset adjustment plate needle bearing circular track 10, driving the suction area adjustment plate 7 to make corresponding angle adjustments. At the same time, the fixed end seal 8 and the adjustment end seal 9 installed on both sides of the suction area adjustment plate 7 will closely follow the position change of the suction area adjustment plate 7 and move synchronously under the elastic force of the compression spring 13 connected to them. When the suction area adjustment plate 7 rotates, the compression spring 13 will extend and retract in real time according to the adjustment range, ensuring that the end seal can always keep in contact with the edge of the suction area adjustment plate 7, realizing dynamic sealing opening and closing adjustment.

[0039] The entire adjustment process continues until the opening of the suction zone reaches a suitable size that can adapt to the current state of the blanket, which is sufficient to improve the air permeability and dehydration effect of the blanket. Then, the operation of servo motor 1 is stopped, and the adjustment operation is completed.

[0040] S2, Device Reset

[0041] Confirm that the new felt is securely installed, with no loose connections, and that the felt's tension, position, and other parameters meet the equipment's operating requirements. This is to prevent felt installation issues from affecting the servo motor 1's positioning accuracy. Simultaneously, check the environment around the servo motor 1, removing any debris that might obstruct its operation, ensuring a safe and unobstructed operating space. Locate the servo motor 1's selector switch, typically located on the equipment's control panel or a dedicated control box near the motor. Identify its "off" and "on" positions to avoid operational errors. Switch the selector switch from the "off" position to the "on" position. When operating the switch, the movements should be smooth to avoid damaging the switch due to excessive force. After turning on the switch, pay attention to whether there are any abnormal noises or changes in the indicator light of servo motor 1. If any abnormal noises, sparks, or abnormal flashing of the indicator light occur, turn off the switch immediately, troubleshoot the problem, and then resume operation. Afterward, servo motor 1 will enter the automatic return program. During this process, the operator must closely observe the operating status of the motor and the position changes of the felt as the motor moves, ensuring that the motor returns to its position according to the preset trajectory and parameters. During the return process, it is strictly forbidden to touch the motor's running parts and related transmission mechanisms to prevent safety accidents.

[0042] In actual operation, when this device is used, the blanket to be processed is placed on the device, and the blanket is processed by the vacuum press roller. After prolonged use, the internal fibers of the blanket gradually become compacted, and the gaps are blocked by residual impurities, resulting in a significant decrease in air permeability. This prevents efficient water removal during the dehydration process, drastically reducing the amount of water removed and affecting overall work efficiency. At this point, the servo motor of the device needs to be started. The power output of the motor drives the servo motor gear to start rotating. Because the servo motor gear maintains a precise meshing with the gear in the suction area adjustment plate, the rotational force of the motor gear is transmitted through the teeth. The force is smoothly transmitted to the suction area adjustment plate. Under the influence of this driving force, the needle bearing on the suction area adjustment plate will make smooth circular motion along the preset circular track of the needle bearing, driving the suction area adjustment plate to make corresponding angle adjustments. At the same time, the fixed end seal and the adjusting end seal installed on both sides of the suction area adjustment plate will closely follow the position change of the suction area adjustment plate and move synchronously under the elastic force of the compression spring connected to them. When the suction area adjustment plate rotates, the compression spring will extend and retract in real time according to the adjustment range, ensuring that the end seal can always keep in contact with the edge of the suction area adjustment plate, realizing dynamic sealing opening and closing adjustment.

[0043] The entire adjustment process continues until the opening of the suction zone reaches a suitable size that can adapt to the current state of the blanket, which is sufficient to improve the blanket's breathability and dehydration effect. Then, the servo motor stops running, and the adjustment operation is completed.

[0044] After the blanket is processed, remove it and replace it with a new blanket. Ensure the new blanket is securely installed, with no loose connections, and that the blanket's tension, position, and other parameters meet the equipment's operating requirements. Avoid any issues with blanket installation that could affect the servo motor's positioning accuracy. Simultaneously, check the area around the servo motor, removing any debris that might obstruct its operation, ensuring a safe and unobstructed operating space. Locate the servo motor's selector switch, usually located on the equipment's control panel or a dedicated control box near the motor. Identify the "off" and "on" positions to avoid accidental operation. Switch the selector switch from the "off" position to the "on" position. When operating the gear, the movements should be smooth to avoid damaging the switch due to excessive force. After turning on the switch, pay attention to any abnormal noises from the servo motor or changes in the indicator lights. If any abnormal noises, sparks, or abnormal flashing of the indicator lights occur, immediately turn off the switch, troubleshoot the problem, and then resume operation. Afterward, the servo motor will enter the automatic return program. During this process, the operator must closely observe the motor's operating status and the position changes of the felt as the motor moves, ensuring that the motor returns to its position according to the preset trajectory and parameters. During the return process, it is strictly forbidden to touch the motor's moving parts and related transmission mechanisms to prevent safety accidents.

[0045] Based on the empirical formula ΔS = C·Q·ΔP / W·v (ΔS: paper web dryness %; C: comprehensive empirical coefficient, usually 0.001~0.003; Q: suction volume m3 / h; ΔP: vacuum degree kPa; W: basis weight g / m2; V: machine speed m / min), it is known that the paper machine felt has a significant impact on the vacuum degree of the vacuum press roll at different stages. Adjusting the opening of the vacuum press roll suction zone can effectively improve the paper web dryness. For example: suction volume Q = 20000 m3 / h, vacuum degree ΔP = -60 kPa, machine speed V = 800 m / min, basis weight W = 80 g / m2, coefficient C = 0.002. Calculation: ΔS = 0.002 × 20000 × 60 / 80 × 800 = 3.8%, that is, the paper web dryness is increased by about 3.8%.

[0046] It should 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 process, method, article, or apparatus.

[0047] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method and apparatus for dynamic ratio control of the suction zone opening of a vacuum press roller based on a servo motor, comprising a vacuum press roller end (15), characterized in that: A servo motor (1) is installed at the top of the inner end of the vacuum press roller end (15). A servo motor gear (2) is installed at the right end of the servo motor (1). An adjusting plate internal gear (3) is installed at the inner end of the vacuum press roller end (15). An axial fixing seal (4) is installed at the inner end of the vacuum press roller end (15). An adjusting seal (5) of the suction area adjusting plate is installed at the inner end of the vacuum press roller end (15). A suction area adjusting range (6) is opened at the inner end of the vacuum press roller end (15). An adjusting plate (6) of the suction area is installed at the inner end of the vacuum press roller end (15). 7) A fixed end seal (8) is installed at the inner end of the vacuum press roller end (15). An adjusting end seal (9) is installed on the surface of the fixed end seal (8). An adjusting plate needle bearing circular track (10) is installed at the inner end of the vacuum press roller end (15). A needle bearing (11) is installed on the surface of the adjusting plate needle bearing circular track (10). A needle bearing support (12) is installed on the surface of the needle bearing (11). A compression spring (13) is installed at the inner end of the adjusting end seal (9). An end sealing sleeve (14) is installed at the inner end of the adjusting end seal (9).

2. The method and apparatus for dynamic ratio control of press roller suction zone opening based on servo motor according to claim 1, characterized in that: The servo motor system consists of a servo motor (1) and a servo motor gear (2).

3. The method and apparatus for dynamic ratio control of press roller suction zone opening based on servo motor according to claim 1, characterized in that: The suction zone adjustment system consists of an internal gear (3) of the adjustment plate, a suction zone adjustment plate (7), a needle bearing (11) and a needle bearing support (12).

4. The method and apparatus for dynamic ratio control of press roller suction zone opening based on servo motor according to claim 1, characterized in that: The end sealing system consists of a fixed end seal (8), an adjustable end seal (9), a compression spring (13), and an end sealing sleeve (14).

5. A method for dynamic ratio control of the suction zone opening of a press roller based on a servo motor, characterized in that: The above dynamic proportioning control method includes the following steps: S1. The device processes the blanket. After prolonged use, the internal fibers of the blanket gradually become compacted, and the gaps are blocked by residual impurities, resulting in a significant decrease in air permeability. During the dehydration process, it is unable to efficiently expel moisture, and the amount of water removed is greatly reduced, affecting the overall work efficiency. At this time, it is necessary to start the servo motor (1) of the equipment. The power output of the motor drives the servo motor gear to start rotating (2). Since the servo motor gear (2) and the gear in the suction area adjustment plate (7) maintain a precise meshing state, the rotational force of the motor gear will be smoothly transmitted to the suction area adjustment plate (7) through the transmission between the teeth. Affected by this driving force, the needle shaft on the suction area adjustment plate (7) The bearing (11) will move smoothly along the preset circular track (10), driving the suction area adjustment plate (7) to make corresponding angle adjustments. At the same time, the fixed end seal (8) and the adjusting end seal (9) installed on both sides of the suction area adjustment plate (7) will closely follow the position change of the suction area adjustment plate (7) and move synchronously under the elastic force of the compression spring (13) connected to them. When the suction area adjustment plate (7) rotates, the compression spring (13) will extend and retract in real time according to the adjustment range, ensuring that the end seal can always keep in contact with the edge of the suction area adjustment plate (7) to achieve dynamic sealing opening and closing adjustment. The entire adjustment process continues until the opening of the suction area reaches a suitable size that can adapt to the current state of the blanket, which is sufficient to improve the air permeability and dehydration effect of the blanket. Then the operation of the servo motor (1) is stopped to complete this adjustment operation. S2, Device Reset Confirm that the new felt is securely installed, all connections are secure, and the tension and position of the felt meet the equipment's operating requirements. Avoid any issues with the felt installation affecting the servo motor (1)'s positioning accuracy. Simultaneously, check the surrounding environment of the servo motor (1), removing any debris that may obstruct its operation to ensure a safe and unobstructed operating space. Locate the servo motor (1)'s selector switch, which is usually located on the equipment's control panel or a dedicated control box near the motor. Identify its "off" and "on" positions to avoid operational errors. Switch the selector switch from the "off" position to the "on" position. When operating the gear, the action should be smooth to avoid excessive force that could damage the switch. After turning on the switch, pay attention to whether there are any abnormal noises or changes in the indicator light of the servo motor (1). If there are any abnormal noises, sparks, or abnormal flashing of the indicator light, the switch should be turned off immediately. After troubleshooting, the operation can be resumed. After that, the servo motor (1) will enter the automatic return program. During this process, the operator needs to closely observe the running status of the motor and the position change of the cloth as the motor runs to ensure that the motor returns to its position according to the preset trajectory and parameters. During the return process, it is strictly forbidden to touch the running parts of the motor and related transmission mechanisms to prevent safety accidents.

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