Adjustable vacuum couch roll for papermaking and control method thereof

Abstract

The application discloses a papermaking adjustable vacuum couch roll and a control method thereof. The papermaking adjustable vacuum couch roll comprises a roll body, a hollow shaft rotatably connected to the inside of the roll body, and a connecting support installed on the two end surfaces of the hollow shaft through the bottom end surface position bolted locking clamps. The roll body is provided with a multi-channel space in the inside, so that the contact surface of the roll body and the paper can be quickly vacuum treated, the paper on the roll body is tightly adhered, the paper is prevented from being damaged due to wrinkles in the winding process, the stability of the paper in the processing process is ensured, and the paper adjusting mechanism is symmetrically arranged on the two sides of the roll body, so that the contact surface of the roll body and the paper with different dehydration requirements can be adjusted, and then the dehydration effect of the paper and the production efficiency of the papermaking process can be improved.

Description

Technical Field

[0001] This invention relates to the field of vacuum coil rolling technology, and in particular to an adjustable vacuum coil rolling for papermaking and its control method. Background Technology

[0002] Vacuum coil rolls are key components in papermaking machines used for dewatering. Located at the end of the wet section of the papermaking machine, vacuum coil rolls perform dewatering through their internal vacuum chambers. This equipment uses vacuum suction to remove moisture from wet paper sheets, increasing paper dryness and thus improving production efficiency and product quality. Vacuum coil rolls not only effectively remove moisture but also reduce wear on the forming wire and facilitate paper feeding.

[0003] Existing vacuum coil rolls for papermaking are generally hollow, requiring vacuum treatment of the internal space. The large internal space of the coil roll increases the operating time and power of the vacuum pump, leading to increased workload and energy consumption, higher papermaking costs, and a shortened lifespan for the vacuum pump. Furthermore, the contact area between the paper and the coil roll cannot be easily adjusted according to the paper processing requirements, thus reducing the overall efficiency of the papermaking process. Therefore, this invention proposes an adjustable vacuum coil roll for papermaking and its control method. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an adjustable vacuum coil roll for papermaking and its control method. By setting multiple channels inside the roll body, the contact surface between the roll body and the paper can be rapidly vacuumed, thereby tightly bonding the paper on the roll body and preventing wrinkles and damage to the paper during winding, ensuring the stability of the paper during processing. Furthermore, paper adjustment mechanisms are symmetrically arranged on both sides of the roll body, which can adjust the contact surface between the paper and the roll body for different dewatering requirements, thereby improving the dewatering effect of the paper and the production efficiency of the papermaking process.

[0005] To solve the above-mentioned technical problems, the present invention provides an adjustable vacuum coil roll for papermaking, comprising a roll body for stable dewatering of the paper body during the papermaking process. A hollow shaft is rotatably connected to the inside of the roll body for positioning and fixing the position of the entire roll body. A connecting bracket is installed on the two end faces of the hollow shaft by locking clamps bolted to its bottom end face for installing and fixing the adjusting mechanism and auxiliary components on the connecting bracket. The adjusting mechanism is bolted to the bottom of the connecting bracket for adjusting the angle between the roll body and the paper body being processed on both sides. The auxiliary components are detachably installed at the center of the inner top of the connecting bracket for detaching the paper body from the outer wall of the roll body near the bottom sides. The paper body is respectively attached to the outer walls of the roll body and the adjusting mechanism.

[0006] The invention is further configured such that: a plurality of air holes are uniformly opened on the outer wall of the roller body; a plurality of spacers are uniformly fixedly connected to the inner wall of the roller body; a sealing inner ring is fixedly connected to the opposite face of the plurality of spacers; a sealing end cap is bolted to one end of the roller body; a venting end cap is bolted to the other end of the roller body; the sealing end cap and the venting end cap are respectively rotatably connected to the outer wall of the hollow shaft through their inner wall bearings; and a transmission pulley is bolted to the end face of the venting end cap.

[0007] The above technical solution utilizes a transmission pulley to drive the entire roller to rotate stably on the hollow shaft, and uses a sealing inner ring and multiple spacers to divide each group of air holes, thus stabilizing it during vacuum treatment and improving the dehydration and adsorption stability.

[0008] The present invention is further configured such that: the plurality of spacers are distributed alternately with the plurality of air holes, and the spacers and the sealing inner ring together form a ventilation channel; the interior of the venting end cover has an L-shaped air channel, and the L-shaped air channel openings located on the side wall of the venting end cover are respectively connected to the corresponding ventilation channels.

[0009] The above technical solution facilitates the connection between the pores and the L-shaped air channel formed internally, which makes it convenient to adsorb, fix and dehydrate the paper attached to the pores during vacuum processing.

[0010] The present invention is further configured such that: a through hole is provided on the outer wall of the hollow shaft near the end face; a connecting gas sleeve is fitted on the outer wall of the hollow shaft near the through hole; a shaft end cap is sealed at one end of the hollow shaft; and a vacuum pump is connected to the other end of the hollow shaft.

[0011] The above technical solution facilitates the use of through holes and connecting air sleeves to generate negative pressure at the corresponding positions of the paper during internal vacuum treatment, and seals the end face of the hollow shaft under the action of the shaft end cap to prevent air leakage.

[0012] The present invention is further configured such that: the outer wall of the connecting gas sleeve is provided with a connecting groove, the connecting groove is arc-shaped and is in close contact with an L-shaped air passage located on the inner wall of the vent end cap.

[0013] The above technical solution facilitates the connection between the ventilation end cap and the connecting groove, thereby utilizing the L-shaped air passage to create negative pressure inside, which acts on the corresponding air holes, thus dehydrating the paper.

[0014] The invention is further configured such that: the adjusting mechanism includes two adjusting shafts bolted to the top of the connecting bracket; gears are symmetrically interference-fitted to the outer walls of the two adjusting shafts near their end faces, and the two pairs of gears are meshed; movable components are symmetrically sleeved to the outer walls of the two adjusting shafts near their end faces; adjusting rollers are bolted to the end faces of the two sets of movable components; a driven pulley is mounted on the end face of one of the adjusting shafts; a transmission belt is sleeved on the outer wall of the driven pulley; a driving pulley is sleeved on the inner wall of the transmission belt away from the driven pulley; a reducer is interference-fitted to the inner wall of the driving pulley; and a drive motor is detachably mounted on the input shaft of the reducer.

[0015] With the above technical solution, the drive motor is started, and its output shaft rotates, which drives the rotation of the drive pulley through the reducer on the end face. This, in turn, drives the adjustment shaft connected inside the driven pulley to rotate through the sleeved transmission belt. Under the action of the meshing gears, the movable components on the adjustment shaft rotate relative to each other, thereby causing the adjustment roller set on its end face to adjust.

[0016] The present invention is further configured such that: the movable component includes an adjusting plate sleeved on an adjusting shaft, a matching slide rod is movably inserted into the end face of the adjusting plate, a connecting collar is fixedly connected to the end face of the matching slide rod, and the connecting collar is sleeved on the adjusting roller; an adjusting cylinder is bolted to the side wall of the adjusting plate, and the end face of the driving rod of the adjusting cylinder is bolted to the end face of the adjusting roller.

[0017] By using the above technical solution, the adjusting cylinder inside the active component is activated, and the adjusting roller connected to the end face of its drive rod slides stably on the adjusting plate through the matching slide rod on the sleeved connecting ring, thereby achieving a further fine adjustment of the adjusting roller, so that the adjusting rollers on both sides fix the paper body being processed in a certain position.

[0018] The invention is further configured such that: the auxiliary component includes a fixed block installed at the top center of the connecting bracket; the sidewalls of the fixed block are symmetrically provided with arc-shaped frames; the outer walls of the two arc-shaped frames are slidably connected with sliding plates; the bottoms of the two sliding plates are fixedly connected with arc-shaped baffles; the bottoms of the fixed block are symmetrically rotatably connected with movable columns; the outer walls of the two movable columns are fixedly connected with limit plates near the fixed block; the end faces of the two limit plates are abutted with springs, and the end faces of the springs abut against the sidewalls of the sliding plates; and the outer walls of the movable columns are threadedly connected with adjusting nuts near their end faces.

[0019] Through the above technical solution, the adjusting nut inside the auxiliary component is rotated, so that the slide plate that is pressed against it can slide on the movable column through the movable groove, and at the same time slide stably on the arc frame. Then, the arc baffle connected to the bottom of the slide plate moves and adjusts on the outer wall of the roller body, so that its bottom abuts against the angle position formed by the paper body and the roller body. While the slide plate slides on the movable column, it compresses the spring, and by using the spring's restoring elasticity, the adjusted slide plate can be stably and adaptively positioned and fixed inside the movable groove.

[0020] The invention is further configured such that the inner arc surfaces of the two arc-shaped baffles are both attached to the outer wall of the roller body and are coaxially arranged with the arc-shaped frame; the slide plate has an internal movable groove, and the movable column passes through the movable groove and is movably connected to it.

[0021] The above technical solution facilitates the rapid detachment of the paper adhered to the bottom of the roller under the action of the arc-shaped baffle when the roller rotates, preventing it from sticking to the outer wall of the roller. Furthermore, when adjusting the arc-shaped baffle, it can be stably adjusted on the coaxial arc frame, and the movable column can be adaptively adjusted inside the movable groove during the papermaking process.

[0022] On the other hand, a method for controlling an adjustable vacuum coil roll for papermaking is provided, including the following steps: S1. First, attach the paper body to be processed onto the outer wall of the adjusting roller and the roller body in sequence; S2. Next, adjust the position of the adjusting rollers inside the adjusting mechanisms on both sides according to the processing requirements of the paper body. This is used to adjust the angle formed between the paper body and the rollers. The specific steps are as follows: S21. Start the drive motor. Its output shaft rotates and drives the drive pulley to rotate through the reducer on the end face. This drives the adjusting shaft connected inside the driven pulley to rotate through the sleeved transmission belt. Under the action of the meshing gears, the moving components on the adjusting shaft rotate relative to each other, thereby adjusting the adjusting roller set on its end face. S22. Next, the adjusting cylinder inside the active component is activated. The adjusting roller connected to the end face of its drive rod slides stably on the adjusting plate through the matching slide rod on the sleeved connecting ring, thereby achieving a fine adjustment of the adjusting roller again, so that the adjusting rollers on both sides fix the paper body being processed in a certain position. S3. Next, rotate the adjusting nut inside the auxiliary component so that the slide plate that is pressed against it can slide on the movable column through the movable groove, and at the same time slide stably on the arc frame. Then, move and adjust the arc baffle connected to the bottom of the slide plate on the outer wall of the roller so that its bottom is against the angle position formed by the paper body and the roller body. While the slide plate slides on the movable column, it compresses the spring, and the spring's return elasticity is used to make the adjusted slide plate stably and adaptively positioned and fixed inside the movable groove. S4. Next, the external drive device drives the transmission pulley to rotate, so that the roller body rotates stably on the hollow shaft through the bearings inside the sealing end cover and the ventilation end cover on the end face. At the same time, the vacuum pump connected to the end face of the hollow shaft is started, which will generate negative pressure inside the hollow shaft. The through hole opened on the outer wall of the hollow shaft, the connecting air sleeve, the L-shaped air channel inside the ventilation end cover, and the air hole located at the L-shaped air channel are connected to each other, so as to adsorb the paper body at the air hole, thereby achieving the effect of dehydration and stable adhesion to the roller body surface. At the same time, the paper body during processing is stably detached from the roller body under the action of the arc baffle on the side, preventing the paper body from being excessively adsorbed on the roller body surface and causing wrinkles. Thus, the vacuum flat roll is adjustable and convenient in the papermaking process.

[0023] The beneficial effects of this invention are as follows: 1. The present invention proposes an adjustable vacuum coil roll for papermaking and its control method. By setting a multi-channel space inside the roll body, the contact surface between the roll body and the paper can be rapidly vacuumed, thereby tightly bonding the paper on the roll body, preventing the paper from being wrinkled or damaged during the winding process, and ensuring the stability of the paper during the processing. 2. The adjustable vacuum coil roll for papermaking and its control method proposed in this invention improve the dewatering effect of paper and the production efficiency of the papermaking process by symmetrically arranging paper adjustment mechanisms on both sides of the roll body. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a structural diagram of the roller body in this invention; Figure 3 This is an exploded view of the roller body in this invention; Figure 4This is a first cross-sectional view of the roller body in this invention; Figure 5 This is a second cross-sectional view of the roller body in this invention; Figure 6 This is a first structural diagram of the adjusting mechanism in this invention; Figure 7 This is a second structural diagram of the adjusting mechanism in this invention; Figure 8 This is a third structural diagram of the adjusting mechanism in this invention; Figure 9 This is a structural diagram of the auxiliary components in this invention; Figure 10 This is a structural diagram of the air jacket in this invention; Figure 11 This is a structural diagram of the vent end cap in this invention.

[0025] In the diagram: 1. Roller body; 11. Air hole; 12. Spacer plate; 13. Sealing inner ring; 14. Sealing end cap; 15. Ventilation end cap; 151. L-shaped air passage; 16. Drive pulley; 2. Hollow shaft; 21. Through hole; 22. Connecting air sleeve; 221. Communicating groove; 23. Shaft end cap; 3. Connecting bracket; 31. Locking clamp; 4. Adjusting mechanism; 41. Adjusting shaft; 42. Gear; 43. Moving component; 431. Adjusting plate; 432. Matching slide rod; 433. Connecting collar; 434. Adjusting cylinder; 44. Adjusting roller; 45. Driven pulley; 46. Transmission belt; 47. Driving pulley; 48. Reducer; 49. Drive motor; 5. Auxiliary components; 51. Fixing block; 52. Arc-shaped frame; 53. Slide plate; 531. Movable groove; 54. Arc-shaped baffle; 55. Movable column; 56. Limiting plate; 57. Spring; 58. Adjusting nut; 6. The paper itself. Detailed Implementation

[0026] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0027] like Figures 1-5As shown, an adjustable vacuum coil roll for papermaking includes a roll body 1 for stabilizing the dewatering of paper 6 during the papermaking process. The outer wall of the roll body 1 has a plurality of uniformly distributed air holes 11. The inner wall of the roll body 1 has a plurality of uniformly fixedly connected spacers 12. Sealing inner rings 13 are fixedly connected to the opposite faces of the spacers 12. The spacers 12 and air holes 11 are distributed alternately, and the spacers 12 and sealing inner rings 13 form ventilation channels. An L-shaped air passage 151 is opened inside the venting end cover 15, and the openings of the L-shaped air passage 151 located on the side wall of the venting end cover 15 are respectively connected to the corresponding ventilation channels, facilitating the passage of air holes 11 through the internal structure. The ventilation duct is connected to the L-shaped air duct 151, which facilitates the adsorption, fixation and dehydration of the paper attached to the air holes 11 during vacuum treatment. One end of the roller body 1 is bolted to a sealing end cap 14, and the other end of the roller body 1 is bolted to a ventilation end cap 15. The sealing end cap 14 and the ventilation end cap 15 are rotatably connected to the outer wall of the hollow shaft 2 through their inner wall bearings. The end face of the ventilation end cap 15 is bolted to a transmission pulley 16. The transmission pulley 16 can drive the entire roller body 1 to rotate stably on the hollow shaft 2. Furthermore, the sealing inner ring 13 and multiple spacers 12 can divide each group of air holes 11, making them stable during vacuum treatment and improving the dehydration and adsorption stability. like Figure 3 , Figure 10 and Figure 11 As shown, the hollow shaft 2 is rotatably connected to the inside of the roller body 1, and is used to position and fix the entire roller body 1. A through hole 21 is opened on the outer wall of the hollow shaft 2 near the end face. A connecting air sleeve 22 is sleeved on the outer wall of the hollow shaft 2 near the through hole 21. A connecting groove 221 is opened on the outer wall of the connecting air sleeve 22. The connecting groove 221 is arc-shaped and fits and connects to the L-shaped air passage 151 opening located on the inner wall of the venting end cover 15, so that the venting end cover 15 and the connecting groove 221 can be connected. Thus, the negative pressure generated inside is applied to the corresponding air hole 11 by the L-shaped air passage 151, thereby dewatering the paper. One end of the hollow shaft 2 is sealed with a shaft end cover 23, and the other end of the hollow shaft 2 is connected to a vacuum pump. The connection between the through hole 21 and the connecting air sleeve 22 allows negative pressure to be generated at the corresponding position of the paper when vacuum treatment is performed inside. Under the action of the shaft end cover 23, the end face of the hollow shaft 2 is sealed to prevent air leakage.

[0028] like Figures 6-8As shown, the connecting bracket 3 is bolted to the locking clamp 31 at its bottom end face and installed on the two end faces of the hollow shaft 2. This clamp is used to install and fix the adjusting mechanism 4 and auxiliary components 5 on the connecting bracket 3. The adjusting mechanism 4 is bolted to the bottom of the connecting bracket 3 and is used to adjust the angle between the roller 1 and the paper bodies 6 being processed on both sides. The adjusting mechanism 4 includes two adjusting shafts 41 bolted to the top of the connecting bracket 3. Gears 42 are symmetrically interference-fitted to the outer walls of the two adjusting shafts 41 near their end faces, and the two pairs of gears 42 are arranged in a specific orientation. The two adjusting shafts 41 are symmetrically fitted with movable components 43 near their end faces on their outer walls. Each movable component 43 includes an adjusting plate 431 fitted onto the adjusting shaft 41. A matching slide rod 432 is movably inserted into the end face of the adjusting plate 431. A connecting collar 433 is fixedly connected to the end face of the matching slide rod 432 and is fitted onto the adjusting roller 44. An adjusting cylinder 434 is bolted to the side wall of the adjusting plate 431, and the end face of the drive rod of the adjusting cylinder 434 is bolted to the end face of the adjusting roller 44. This activates the internal adjusting mechanism of the movable component 43. The throttle cylinder 434 has an adjusting roller 44 connected to its drive rod end face. Through the matching slide rod 432 on the sleeved connecting ring 433, the roller 44 slides stably on the adjusting plate 431, thereby achieving a further fine adjustment of the adjusting roller 44. This allows the adjusting rollers 44 on both sides to fix the paper body 6 being processed in a certain position. The end faces of both sets of movable components 43 are bolted with adjusting rollers 44. One of the adjusting shafts 41 has a driven pulley 45 installed on its end face. A transmission belt 46 is sleeved on the outer wall of the driven pulley 45. The inner wall of the transmission belt 46 is located away from the driven pulley 45. A drive pulley 47 is sleeved on the drive pulley 47. A reducer 48 is interference-fitted to the inner wall of the drive pulley 47. A drive motor 49 is detachably mounted on the input shaft of the reducer 48. When the drive motor 49 is started, its output shaft rotates and drives the drive pulley 47 to rotate through the reducer 48 on the end face. This drives the adjusting shaft 41 connected inside the driven pulley 45 to rotate through the sleeved transmission belt 46. Under the action of the meshing gear 42, the movable component 43 on the adjusting shaft 41 rotates relative to each other, thereby causing the adjusting roller 44 set on its end face to be adjusted. like Figure 8 and Figure 9As shown, the auxiliary component 5 is detachably installed at the center of the inner top of the connecting bracket 3, and is used to detach the paper body 6 from the outer wall of the roller body 1 near the bottom sides. The auxiliary component 5 includes a fixing block 51 installed at the center of the inner top of the connecting bracket 3. Arc-shaped frames 52 are symmetrically arranged on the side walls of the fixing block 51. Slide plates 53 are slidably connected to the outer walls of the two arc-shaped frames 52. Arc-shaped baffles 54 are fixedly connected to the bottom of the two slide plates 53. The inner arc surfaces of the two arc-shaped baffles 54 are in contact with the outer wall of the roller body 1 and are in contact with the arc-shaped... The frame 52 is coaxially arranged, and the slide plate 53 has a movable groove 531 inside. The movable column 55 passes through the movable groove 531 and is movably connected to it. This allows the paper attached to the bottom of the roller 1 to be quickly detached under the action of the arc-shaped baffle 54 when the roller 1 rotates, preventing it from adhering to the outer wall of the roller 1. Furthermore, when adjusting the arc-shaped baffle 54, it can be stably adjusted on the coaxial arc-shaped frame 52. During the papermaking process, it ensures that the movable column 55 adapts itself within the movable groove 531. Adjustment: The bottom of the fixed block 51 is symmetrically rotatably connected to movable columns 55. Limiting plates 56 are fixedly connected to the outer walls of the two movable columns 55 near the fixed block 51. Springs 57 are fitted abutting the end faces of both limiting plates 56, and the end faces of the springs 57 abut against the side walls of the sliding plate 53. Adjusting nuts 58 are threadedly connected to the outer walls of the movable columns 55 near their end faces. Rotating the adjusting nuts 58 inside the auxiliary component 5 allows the sliding plate 53, which it abuts against, to slide on the movable columns 55 through the movable groove 531. The slide plate 53 slides stably on the arc frame 52, and then the arc baffle 54 connected to the bottom of the slide plate 53 moves and adjusts on the outer wall of the roller body 1 so that its bottom abuts against the angle position formed by the paper body 6 and the roller body 1. While the slide plate 53 slides on the movable column 55, it squeezes the spring 57, and the spring 57's return elasticity allows the adjusted slide plate 53 to be stably positioned and fixed inside the movable groove 531. The paper body 6 is respectively attached to the outer wall of the roller body 1 and the adjustment mechanism 4.

[0029] like Figures 1-11 As shown, a control method for an adjustable vacuum coil roll for papermaking includes the following steps: S1. First, the paper body 6 to be processed is attached to the outer wall of the adjusting roller 44 and the roller body 1 in sequence. S2. Next, according to the processing requirements of the paper body 6, the position of the adjusting rollers 44 inside the adjusting mechanisms 4 on both sides is adjusted so that the angle formed between the paper body 6 and the roller body 1 is adjusted. The specific steps are as follows: S21. Start the drive motor 49. Its output shaft rotates and drives the drive pulley 47 to rotate through the reducer 48 on the end face. This drives the adjusting shaft 41 connected inside the driven pulley 45 to rotate through the sleeved transmission belt 46. Under the action of the meshing gear 42, the movable component 43 on the adjusting shaft 41 rotates relative to each other, thereby adjusting the adjusting roller 44 set on its end face. S22. Next, the adjusting cylinder 434 inside the active component 43 is activated. The adjusting roller 44 connected to the end face of its drive rod slides stably on the adjusting plate 431 through the matching slide rod 432 on the sleeved connecting ring 433, thereby realizing the fine adjustment of the adjusting roller 44 again, so that the adjusting rollers 44 on both sides fix the paper body 6 being processed in a certain position. S3. Next, the adjusting nut 58 inside the auxiliary component 5 is rotated so that the slide plate 53 that is pressed against it can slide on the movable column 55 through the movable groove 531, and at the same time slide stably on the arc frame 52. Then, the arc baffle 54 connected to the bottom of the slide plate 53 is moved and adjusted on the outer wall of the roller body 1 so that its bottom abuts against the angle position formed by the paper body 6 and the roller body 1. While the slide plate 53 slides on the movable column 55, it squeezes the spring 57, and the return elasticity of the spring 57 is used to make the adjusted slide plate 53 stably and adaptively positioned and fixed inside the movable groove 531. S4. Next, the external drive device drives the transmission pulley 16 to rotate, so that the roller 1 rotates stably on the hollow shaft 2 through the bearings in the sealing end cover 14 and the ventilation end cover 15 on the end face. At the same time, the vacuum pump connected to the end face of the hollow shaft 2 is started, which will generate negative pressure inside the hollow shaft 2. The through hole 21 opened on the outer wall of the hollow shaft 2, the connecting air sleeve 22, the L-shaped air channel 151 in the ventilation end cover 15 and the air hole 11 located at the L-shaped air channel 151 are connected, so as to adsorb the paper body 6 at the air hole 11, thereby achieving the effect of dehydration and stable adhesion to the surface of the roller 1. At the same time, the paper body 6 being processed is stably detached from the roller 1 under the action of the arc baffle 54 on the side, preventing the paper body 6 from being excessively adsorbed on the surface of the roller 1 and causing wrinkles, thereby realizing the adjustability and convenience of the vacuum flat roller in the papermaking process.

[0030] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An adjustable vacuum coil roll for papermaking, characterized in that: include Roller (1) is used to stabilize and dehydrate the paper body (6) during the papermaking process; The outer wall of the roller body (1) is uniformly provided with a plurality of air holes (11), and the inner wall of the roller body (1) is uniformly fixedly connected with a plurality of spacers (12). The opposing surfaces of the plurality of spacers (12) are fixedly connected with sealing inner rings (13). One end of the roller body (1) is bolted to a sealing end cap (14), and the other end of the roller body (1) is bolted to a venting end cap (15). The sealing end cap (14) and the venting end cap (15) are rotatably connected to the outer wall of the hollow shaft (2) through their inner wall bearings, and the end face of the venting end cap (15) is bolted to a transmission pulley (16). Multiple partition plates (12) are arranged alternately with multiple air holes (11), and two adjacent partition plates (12) and the sealing inner ring (13) form a ventilation channel. The interior of the ventilation end cover (15) is opened with an L-shaped air channel (151), and the opening of the L-shaped air channel (151) located on the side wall of the ventilation end cover (15) is connected to the corresponding ventilation channel. Hollow shaft (2), which is rotatably connected to the inside of roller body (1) and is used to position and fix the position of the entire roller body (1); The hollow shaft (2) has a through hole (21) near the end face on its outer wall. A connecting gas sleeve (22) is fitted onto the outer wall of the hollow shaft (2) near the through hole (21). One end of the hollow shaft (2) is sealed with a shaft end cap (23). The other end of the hollow shaft (2) is connected to a vacuum pump. The outer wall of the connecting air sleeve (22) is provided with a connecting groove (221), which is arc-shaped and fits and connects to the L-shaped air passage (151) located on the inner wall of the ventilation end cap (15); The connecting bracket (3) is installed on the two end faces of the hollow shaft (2) by a locking clamp (31) bolted to its bottom end face, and is used to install and fix the adjustment mechanism (4) and auxiliary components (5) on the connecting bracket (3). Adjustment mechanism (4), the adjustment mechanism (4) is bolted to the bottom of the connecting bracket (3), the paper body (6) is respectively attached to the outer wall of the roller (1) and the adjustment mechanism (4), the adjustment mechanism (4) adjusts the included angle of the paper body (6) in processing on both sides relative to the roller (1); The adjustment mechanism (4) includes two adjustment shafts (41) bolted to the top of the connecting bracket (3). The outer walls of the two adjustment shafts (41) are symmetrically fitted with movable components (43) near the end face. The end faces of the two sets of movable components (43) are bolted with adjustment rollers (44). The movable component (43) includes an adjusting plate (431) sleeved on the adjusting shaft (41), a matching slide rod (432) is movably inserted into the end face of the adjusting plate (431), a connecting collar (433) is fixedly connected to the end face of the matching slide rod (432), and the connecting collar (433) is sleeved on the adjusting roller (44). An adjusting cylinder (434) is bolted to the side wall of the adjusting plate (431), and the end face of the drive rod of the adjusting cylinder (434) is bolted to the end face of the adjusting roller (44). The auxiliary component (5) is detachably installed at the inner top center of the connecting bracket (3) for detaching the paper body (6) from the outer wall of the roller (1) near the bottom sides.

2. The adjustable vacuum roll for papermaking according to claim 1, characterized in that: The outer walls of the two adjusting shafts (41) are symmetrically interference-fitted with gears (42) near their end faces, and the two pairs of gears (42) are meshed. A driven pulley (45) is installed on the end face of one of the adjusting shafts (41). A transmission belt (46) is sleeved on the outer wall of the driven pulley (45). A driving pulley (47) is sleeved on the inner wall of the transmission belt (46) away from the driven pulley (45). A reducer (48) is interference-fitted on the inner wall of the driving pulley (47). A drive motor (49) is detachably installed on the input shaft of the reducer (48).

3. The adjustable vacuum roll for papermaking according to claim 2, characterized in that: The auxiliary component (5) includes a fixed block (51) installed at the top center inside the connecting bracket (3). The side wall of the fixed block (51) is symmetrically provided with arc-shaped frames (52). The outer walls of the two arc-shaped frames (52) are slidably connected with sliding plates (53). The bottom of the two sliding plates (53) is fixedly connected with arc-shaped baffles (54). The bottom of the fixed block (51) is symmetrically rotatably connected with movable columns (55). The outer walls of the two movable columns (55) are fixedly connected with limit plates (56) near the fixed block (51). The end faces of the two limit plates (56) are abutted with springs (57), and the end faces of the springs (57) abut against the side walls of the sliding plates (53). The outer walls of the movable columns (55) are threadedly connected with adjusting nuts (58) near the end faces.

4. The adjustable vacuum roll for papermaking according to claim 3, characterized in that: The inner arc surfaces of the two arc-shaped baffles (54) are both attached to the outer wall of the roller body (1) and are coaxially arranged with the arc-shaped frame (52). The slide plate (53) has an movable groove (531) inside, and the movable column (55) passes through the movable groove (531) and is movably connected to it.

5. A control method for an adjustable vacuum roll for papermaking according to claim 4, characterized in that: Includes the following steps: S1. First, attach the paper body (6) to be processed to the outer wall of the adjusting roller (44) and the roller body (1) in sequence; S2. Next, according to the processing requirements of the paper body (6), the position of the adjusting rollers (44) inside the adjusting mechanisms (4) on both sides is adjusted to adjust the angle formed between the paper body (6) and the roller (1). The specific steps are as follows: S21. Start the drive motor (49). Its output shaft rotates and drives the drive pulley (47) to rotate through the reducer (48) on the end face. The transmission belt (46) is sleeved and drives the adjusting shaft (41) connected inside the driven pulley (45) to rotate. Under the action of the meshing gear (42), the movable component (43) on the adjusting shaft (41) rotates relative to each other, thereby making the adjusting roller (44) set on its end face adjust. S22. Next, start the adjusting cylinder (434) inside the active component (43). The adjusting roller (44) connected to the end face of its drive rod slides stably on the adjusting plate (431) through the matching slide rod (432) on the sleeved connecting ring (433), thereby realizing the fine adjustment of the adjusting roller (44) again, so that the adjusting rollers (44) on both sides fix the paper body (6) being processed in a certain position. S3. Next, the adjusting nut (58) inside the auxiliary component (5) is rotated so that the sliding plate (53) that is pressed against it can slide on the movable column (55) through the movable groove (531) and slide stably on the arc frame (52). Then, the arc baffle (54) connected to the bottom of the sliding plate (53) is moved and adjusted on the outer wall of the roller body (1) so that its bottom is pressed against the angle position formed by the paper body (6) and the roller body (1). While the sliding plate (53) slides on the movable column (55), it squeezes the spring (57) and uses the restoring elasticity of the spring (57) to make the adjusted sliding plate (53) stably and adaptively positioned and fixed inside the movable groove (531). S4. Next, the external drive device drives the transmission pulley (16) to rotate, so that the roller (1) rotates stably on the hollow shaft (2) through the bearings in the sealing end cover (14) and the ventilation end cover (15) on the end face. At the same time, the vacuum pump connected to the end face of the hollow shaft (2) is started, which will generate negative pressure inside the hollow shaft (2). The through hole (21) opened on the outer wall of the hollow shaft (2), the connecting air sleeve (22), the L-shaped air passage (151) in the ventilation end cover (15) and The air holes (11) located at the L-shaped air passage (151) are connected, thereby adsorbing the paper body (6) at the air holes (11), thereby achieving the effect of dehydration and stable adhesion to the surface of the roller body (1). At the same time, the paper body (6) in the process is stably detached from the roller body (1) under the action of the arc-shaped baffle (54) on the side, preventing the paper body (6) from being adsorbed too much on the surface of the roller body (1) and causing wrinkles, thereby realizing the adjustability and convenience of the vacuum flat roll in the papermaking process.

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