Low paper breakage rate papermaking pressing equipment and process with vacuum suction roller

Abstract

The present invention relates to the technical field of papermaking equipment, and specifically to low-paper-breakage-rate papermaking pressing equipment and a process with a vacuum suction roller. The present invention is used to solve the technical problem that in the use of existing papermaking pressing equipment, squeezed pulp debris is easy to clog the water absorption holes of the vacuum suction roller, resulting in that the moisture in the felt cloth cannot be sucked away in time. At this time, the paper web pressed out of the pulp will reabsorb the moisture in the felt cloth and become fluffy, and the strength of the fluffy paper web will become lower, making the produced paper web easy to break. The present invention comprises a frame, and the frame is rotatably connected to multiple groups of guide rollers, and the guide rollers are transmission-connected with felt cloths. A cloth feeding structure is provided in the middle of one side of the frame, and the cloth feeding structure is connected to the felt cloth. The beneficial effect of the present invention is to ensure that the paper web and the felt cloth pressed by the roller pressing structure are maintained in a low-water content state, to avoid the paper web from reabsorbently absorbing the moisture in the felt cloth, and to avoid the paper web from becoming fluffy due to water absorption, so that the paper web produced by the device is not easy to break.

Description

Technical Field

[0001] The present invention relates to the technical field of papermaking equipment, in particular to low paper breakage rate papermaking pressing equipment and a process with a vacuum suction roller. Background Art

[0002] After the pulp is evenly treated in the papermaking process, it needs to be dehydrated after the initial formation of the paper product due to the large amount of water in the pulp. Currently, the device for dehydrating the pulp is a vacuum suction roller. The paper sheet is generally dehydrated in the press section by a large roller pressing method. The paper sheet follows the felt and passes smoothly between the press rollers, thereby transferring the moisture in the paper sheet to the felt. The vacuum suction roller vacuum absorbs the moisture in the felt to achieve the purpose of dehydration.

[0003] During the use of existing papermaking pressing equipment, the squeezed pulp debris easily clogs the water absorption holes of the vacuum suction roller, resulting in the moisture in the felt cloth not being sucked away in time. At this time, the paper web pressed out of the pulp will reabsorb the moisture in the felt cloth and become fluffy. The strength of the fluffy paper web will decrease, making the produced paper web easy to break. Summary of the Invention

[0004] The purpose of the present invention is to provide a low paper breakage rate papermaking pressing equipment and process with a vacuum suction roller, which is used to solve the technical problem that in the use of existing papermaking pressing equipment, the squeezed pulp debris easily blocks the water absorption holes of the vacuum suction roller, resulting in the moisture in the felt cloth cannot be sucked away in time. At this time, the paper web squeezed out of the pulp will reabsorb the moisture in the felt cloth and become fluffy. The strength of the fluffy paper web will decrease, making the produced paper web easy to break.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A low paper breakage rate papermaking pressing device with a vacuum suction roller comprises a frame, the frame is rotatably connected to multiple groups of guide rollers, the guide rollers are transmission-connected to a felt cloth, a cloth feeding structure is provided in the middle of one side of the frame, and the cloth feeding structure is connected to the felt cloth, a roller pressing structure is provided on the top of one side of the frame, a vacuum drainage structure and a collection structure are respectively provided on the bottom of one side of the frame, the vacuum drainage structure comprises a machine platform fixedly connected to the frame, a driving part is installed on the machine platform, the driving part is connected to a hollow roller through a connecting part, the hollow roller is connected to the felt cloth, a plurality of groups of holes are provided on the hollow roller, and the hollow roller is rotatably connected to the felt cloth. It is connected to a rotating seat fixedly connected to the machine, the rotating seat is connected to a vacuum suction part slidingly connected to the inner wall of the hollow roller, the rotating seat is fixedly connected to a connecting strip, the connecting strip is fixedly connected to an arc sleeve, a first spring is installed in the arc sleeve, the first spring is fixedly connected to a guide arm slidingly connected to the arc sleeve, the guide arm is slidably connected to a linkage frame, a second spring is installed between the guide arm and the linkage frame, one end of the linkage frame is fixedly installed with a shaft body adapted to the hole of the hollow roller, the other end of the linkage frame is fixedly installed with a rod body, the rod body is slidably connected to an inclined pressure frame, and the inclined pressure frame is fixedly connected to the arc sleeve.

[0007] As a further improvement of the present invention: the cloth feeding structure includes a first motor fixedly connected to the frame, a driving roller is fixedly mounted on the output shaft of the first motor, the driving roller is connected to an anti-slip belt, and the anti-slip belt is fixedly connected to the felt.

[0008] As a further improvement of the present invention: the rolling structure includes a guide frame fixedly connected to the frame, the guide frame is fixedly connected to a first electric telescopic rod, the movable end of the first electric telescopic rod is connected to a roller frame through a pressure sensor, the roller frame is slidingly connected to the guide frame, the roller frame is rotatably connected to a pressure roller, and the pressure roller is coaxially connected to a second motor fixedly mounted on the roller frame.

[0009] As a further improvement of the present invention: the driving part includes a second electric telescopic rod fixedly connected to the machine, the movable end of the second electric telescopic rod is connected to a limit frame slidably connected to the machine, a third motor is fixedly mounted on the limit frame, a gear is fixedly mounted on the output shaft of the third motor, the gear is meshed with a ring gear, the ring gear is rotatably connected to the limit frame, and the ring gear is fixedly connected to the connecting part on one side facing the hollow roller.

[0010] As a further improvement of the present invention: the connecting portion includes a clamping frame fixedly connected to the gear ring, and the clamping frame is connected to a connecting frame fixedly connected to the hollow roller via bolts.

[0011] As a further improvement of the present invention: the vacuum suction part includes a vacuum pump fixedly connected to the frame, the vacuum pump fixedly connected to a vacuum box, a drain valve fixedly installed in the vacuum box, the vacuum box fixedly connected to an adapter through a first hose, the adapter fixedly connected to a strip trough body slidingly connected to the inner wall of the hollow roller through a first connecting pipe, the opening of the strip trough body faces the inner wall of the hollow roller, and the first connecting pipe is fixedly connected to the rotating seat.

[0012] As a further improvement of the present invention: the collection structure includes a filter box fixedly connected to the frame, the rotating seat is fixedly connected to a guide frame arranged at the bottom of the hollow roller, the lower end of the guide frame is arranged at the upper part of the opening of the filter box, and a water guide trough body is installed on the frame.

[0013] A papermaking pressing process of a low-paper-breakage-rate papermaking pressing device with a vacuum suction roller comprises the following steps:

[0014] Step 1: Place the pulp on the felt, and drive the felt to move through the feeding structure, so that the felt transports the pulp between the hollow roller and the roller pressing structure;

[0015] Step 2: The pulp on the felt is pressurized by the rolling structure and the hollow roller. The vacuum suction part sucks water in the felt through the negative pressure of the holes, and the pulp is pressed into a paper web. The driving part drives the hollow roller to rotate through the connecting part. The shaft moves together with a row of holes. The shaft presses the guide arm through the linkage frame. The guide arm compresses the first spring. In the process of the guide arm compressing the first spring, the linkage frame moves together with the guide arm. The rod and the oblique pressure frame squeeze each other. The rod drives the shaft out of the hole through the linkage frame. The first spring applies a reset force to the guide arm. The second spring applies a reset force to the linkage frame, so that the shaft is pushed into another row of holes and the end of the shaft extends from the hole.

[0016] Step 3: The paper web moves with the felt and away from the roller structure, completing the dewatering of the formed pulp.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The felt is driven to move by the cloth feeding structure, and the felt transports the pulp to the space between the hollow roller and the roller pressing structure. The roller pressing structure applies pressure to the pulp layer on the felt, and the hollow roller provides support for the felt. After the water in the pulp layer enters the felt, the vacuum suction unit sucks the water from the felt through the holes under negative pressure, so that the pulp is pressed into a paper web and moves with the felt. This process can quickly absorb the moisture from the felt while squeezing the pulp, thereby improving the pulp dewatering efficiency.

[0019] 2. Through the coordinated use of the driving part, the connecting part, the hollow roller, the shaft, the linkage frame, the guide arm, the first spring, the rod body, the inclined pressure frame and the second spring, the shaft is pushed into another row of holes and the end of the shaft extends from the holes, quickly pushing the solid pulp residue in the holes away from the holes, and cleaning the holes. During this period, the collecting structure is used to collect the solid pulp residue and water. As the hollow roller rotates, the device dredges the holes in turn, while reducing water consumption and maintaining the liquid absorption efficiency of the vacuum drainage structure. Through the above treatment, it is ensured that the paper web and the felt cloth pressed by the roller pressing structure are maintained at a low moisture content, avoiding the paper web from re-absorbing moisture in the felt cloth and avoiding the paper web from becoming fluffy due to water absorption, so that the paper web produced by the device is not easy to break, and the paper breakage rate of the paper web produced by the device is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 Schematic diagram of the internal structure of the present invention;

[0022] Figure 2 It is a partial structural schematic diagram of the vacuum drainage structure of the present invention;

[0023] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the vacuum drainage structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the hollow roller, connecting strip, rod body, inclined pressure frame, adapter, first connecting pipe and strip trough body in cooperation with each other in the present invention;

[0025] Figure 5 It is a schematic structural diagram of the hollow roller, connecting strip, arc sleeve, first spring, guide arm, linkage frame, second spring, shaft, rod and inclined pressure frame of the present invention;

[0026] Figure 6 For the present invention Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 7 It is a schematic structural diagram of the matching of the felt and the anti-slip belt of the present invention.

[0028] In the figure: 1. frame; 2. guide roller; 3. felt; 4. cloth feeding structure; 5. roller pressing structure; 6. vacuum drainage structure; 7. machine table; 8. driving part; 9. connecting part; 10. hollow roller; 11. eyelet; 12. rotating seat; 13. vacuum suction part; 14. connecting strip; 15. arc sleeve; 16. first spring; 17. filter box; 18. guide arm; 19. linkage frame; 20. second spring; 21. shaft; 22. rod; 23. inclined pressure frame; 24. collecting structure; 25. first motor; 26. driving roller ; 27. Anti-slip belt; 28. Guide frame; 29. ​​First electric telescopic rod; 30. Pressure sensor; 31. Roller frame; 32. Pressure roller; 33. Second motor; 34. Second electric telescopic rod; 35. Limit frame; 36. Third motor; 37. Vacuum pump; 38. Gear; 39. Ring gear; 40. Clamp frame; 41. Bolt; 42. Guide frame; 43. Connecting frame; 44. Vacuum box; 45. Drain valve; 46. First hose; 47. Adapter; 48. First connecting pipe; 49. Strip trough body; 50. Water guide trough body. DETAILED DESCRIPTION

[0029] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1:

[0030] During the use of existing papermaking pressing equipment, the squeezed pulp debris easily clogs the water absorption holes of the vacuum suction roller, resulting in the water in the felt cloth not being sucked away in time. At this time, the paper web squeezed out of the pulp will reabsorb the water in the felt cloth and become fluffy. The fluffy paper web will have lower strength, making the produced paper web easy to break. To solve this problem, the following technical solution is proposed:

[0031] like Figure 1-Figure 7As shown, a low paper breakage rate papermaking pressing device with a vacuum suction roller includes a frame 1, the frame 1 is rotatably connected to multiple groups of guide rollers 2, and the guide rollers 2 are transmission-connected to a felt cloth 3. A cloth feeding structure 4 is provided in the middle of one side of the frame 1, and the cloth feeding structure 4 is connected to the felt cloth 3. A rolling structure 5 is provided on the top of one side of the frame 1, and a vacuum drainage structure 6 and a collecting structure 24 are respectively provided on the bottom of one side of the frame 1. The vacuum drainage structure 6 includes a machine table 7 fixedly connected to the frame 1, a driving part 8 is installed on the machine table 7, and the driving part 8 is connected to a hollow roller 10 through a connecting part 9. The hollow roller 10 is connected to the felt cloth 3, and multiple groups of holes 11 are provided on the hollow roller 10. The hollow roller 10 is rotatably connected to a rotating part fixedly connected to the machine table 7. The seat 12 is connected to the vacuum suction part 13 which is slidably connected to the inner wall of the hollow roller 10. The rotating seat 12 is fixedly connected to the connecting strip 14. The connecting strip 14 is fixedly connected to the arc sleeve 15. A first spring 16 is installed in the arc sleeve 15. The first spring 16 is fixedly connected to a guide arm 18 which is slidably connected to the arc sleeve 15. The guide arm 18 is slidably connected to a linkage frame 19. A second spring 20 is installed between the guide arm 18 and the linkage frame 19. One end of the linkage frame 19 is fixedly mounted with a shaft 21 which is adapted to the hole 11 of the hollow roller 10. The other end of the linkage frame 19 is fixedly mounted with a rod 22. The rod 22 is slidably connected with an oblique pressure frame 23, and the oblique pressure frame 23 is fixedly connected to the arc sleeve 15.

[0032] After the pulp falls on the felt 3, the cloth feeding structure 4 drives the felt 3 to move, and the felt 3 transports the pulp to between the hollow roller 10 and the rolling structure 5. The rolling structure 5 applies pressure to the pulp layer on the felt 3, and the hollow roller 10 provides support for the felt 3. After the water in the pulp layer enters the felt 3, the vacuum suction part 13 sucks the water in the felt 3 through the holes 11 under negative pressure, so that the pulp is pressed into a paper web and moves with the felt 3. In the process of the movement of the felt 3, the driving part 8 drives the hollow roller 10 to rotate through the connecting part 9. During this period, the shaft 21 moves with a row of holes 11. The shaft 21 presses the guide arm 18 through the linkage frame 19. The guide arm 18 compresses the first spring 16. In the process of the guide arm 18 compressing the first spring 16, the linkage frame 19 moves with the guide arm 18, and the rod 22 and the inclined pressure frame 23 squeeze each other. The rod 22 The linkage frame 19 drives the shaft body 21 to separate from the hole 11, the first spring 16 applies a reset force to the guide arm 18, and the second spring 20 applies a reset force to the linkage frame 19, so that the shaft body 21 is pushed into another row of holes 11 and the end of the shaft body 21 extends from the hole 11, thereby quickly pushing the solid pulp residue in the hole 11 out of the hole 11, thereby cleaning the hole 11. During this period, the collecting structure 24 is used to collect the solid pulp residue and water. As the hollow roller 10 rotates, the device dredges the holes 11 in turn, while reducing water consumption and maintaining the liquid absorption efficiency of the vacuum drainage structure 6, thereby ensuring that the paper web and the felt cloth 3 pressed by the rolling structure 5 are maintained at a low moisture content, thereby preventing the paper web from re-absorbing moisture in the felt cloth 3, and further preventing the paper web from becoming fluffy due to water absorption, thereby reducing the paper breakage rate of the device;

[0033] The cloth feeding structure 4 includes a first motor 25 fixedly connected to the frame 1, and a driving roller 26 is fixedly mounted on the output shaft of the first motor 25. The driving roller 26 is connected to an anti-slip belt 27, and the anti-slip belt 27 is fixedly connected to the felt 3. The first motor 25 drives the driving roller 26 to rotate, thereby driving the anti-slip belt 27 to move, and the movement of the anti-slip belt 27 drives the felt 3 to move.

[0034] The roller pressing structure 5 includes a guide frame 28 fixedly connected to the frame 1. The guide frame 28 is fixedly connected to a first electric telescopic rod 29. The movable end of the first electric telescopic rod 29 is connected to a roller frame 31 via a pressure sensor 30. The roller frame 31 is slidably connected to the guide frame 28. The roller frame 31 is rotatably connected to a pressure roller 32. The pressure roller 32 is coaxially connected to a second motor 33 fixedly mounted on the roller frame 31. The second motor 33 is used to drive the pressure roller 32 to rotate, thereby preventing relative sliding between the pressure roller 32 and the paper web, thereby preventing the pressed paper web from being torn by friction caused by the pressure roller 32. The first electric telescopic rod 29 applies pressure to the roller frame 31 via the pressure sensor 30, thereby causing the pressure roller 32 to press against the pulp layer on the felt 3. During this process, the pressure sensor 30 measures the pressure in real time.

[0035] The driving part 8 includes a second electric telescopic rod 34 fixedly connected to the machine platform 7, the movable end of the second electric telescopic rod 34 is connected to a limit frame 35 slidably connected to the machine platform 7, the second electric telescopic rod 34 is used to drive the limit frame 35 to move, a third motor 36 is fixedly mounted on the limit frame 35, a gear 38 is fixedly mounted on the output shaft of the third motor 36, the gear 38 is meshed with a ring gear 39, the ring gear 39 is rotatably connected to the limit frame 35, and the ring gear 39 is fixedly connected to the connecting part 9 on one side of the hollow roller 10; the third motor 36 drives the gear 38 to rotate, so that the gear 38 drives the ring gear 39 to rotate around the limit frame 35, and the ring gear 39 drives the hollow roller 10 to rotate through the connecting part 9;

[0036] The connecting portion 9 includes a clamping frame 40 fixedly connected to the gear ring 39. The clamping frame 40 is connected to a connecting frame 43 fixedly connected to the hollow roller 10 via bolts 41. By removing the bolts 41, the connection between the clamping frame 40 and the connecting frame 43 is released. After the limiting frame 35 is away from the rotating seat 12, the personnel remove the hollow roller 10 from the rotating seat 12.

[0037] The vacuum suction part 13 includes a vacuum pump 37 fixedly connected to the frame 1, the vacuum pump 37 is fixedly connected to a vacuum box 44, a drain valve 45 is fixedly installed in the vacuum box 44, the vacuum box 44 is fixedly connected to an adapter 47 through a first hose 46, the adapter 47 is fixedly connected to a strip trough body 49 that is slidably connected to the inner wall of the hollow roller 10 through a first connecting pipe 48, the opening of the strip trough body 49 faces the inner wall of the hollow roller 10, and the first connecting pipe 48 is fixedly connected to the rotating seat 12; the vacuum pump 37 continuously extracts air from the vacuum box 44, and under the action of negative pressure, the water in the felt 3 enters the strip trough body 49 through the hole 11, and then the water passes through the first connecting pipe 48, the adapter 47, and the first hose 46 in turn, and finally the water flows into the vacuum box 44, and the water in the vacuum box 44 is discharged by opening the drain valve 45. Example 2:

[0038] Based on the first embodiment, Figure 1 、 Figure 3 and Figure 4 As shown, the collecting structure 24 includes a filter box 17 fixedly connected to the frame 1, the rotating base 12 is fixedly connected to a guide frame 42 arranged at the lower part of the hollow roller 10, the lower end of the guide frame 42 is arranged at the upper part of the opening of the filter box 17, and a water guide trough body 50 is installed on the frame 1;

[0039] The solid pulp residue and water falling from the holes 11 of the hollow roller 10 fall onto the guide frame 42, which guides the solid pulp residue and water to the filter box 17. The filter box 17 filters out the solid pulp residue. The water guide trough body 50 is used to collect water dripping from the filter box 17, the felt cloth 3, and the holes 11. Example 3

[0040] like Figure 1-Figure 7 As shown, based on the first and second embodiments, the papermaking pressing process of the low paper breaking rate papermaking pressing equipment with a vacuum suction roller includes the following steps:

[0041] Step 1: Place the pulp on the felt 3, and use the first motor 25 to drive the driving roller 26 to rotate, driving the anti-slip belt 27 to move, and the movement of the anti-slip belt 27 drives the felt 3 to move, and the felt 3 transports the pulp to between the hollow roller 10 and the rolling structure 5;

[0042] Step 2: The first electric telescopic rod 29 drives the pressing roller 32 to press the pulp layer on the felt 3, and the hollow roller 10 provides support for the felt 3. The vacuum pump 37 continuously extracts the air in the vacuum box 44. Under the action of negative pressure, the water in the felt 3 enters the strip trough 49 through the holes 11, and the pulp is pressed into a paper web; the third motor 36 drives the gear 38 to rotate, so that the gear 38 drives the gear ring 39 to rotate around the limit frame 35, and the gear ring 39 drives the hollow roller 10 to rotate through the connecting part 9, and the shaft 21 moves together with the row of holes 11 The shaft 21 presses the guide arm 18 through the linkage frame 19, and the guide arm 18 compresses the first spring 16. In the process of the guide arm 18 compressing the first spring 16, the linkage frame 19 moves together with the guide arm 18, and the rod 22 and the oblique pressure frame 23 squeeze each other. The rod 22 drives the shaft 21 out of the eyelet 11 through the linkage frame 19. The first spring 16 applies a reset force to the guide arm 18, and the second spring 20 applies a reset force to the linkage frame 19, so that the shaft 21 is pushed into another row of eyes 11 and the end of the shaft 21 extends from the eyelet 11.

[0043] Step 3: The paper web moves along with the felt 3 and away from the rolling structure 5, completing the dewatering of the formed pulp.

[0044] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A low-paper-breakage-rate papermaking pressing device with a vacuum suction roller, comprising a frame (1), wherein the frame (1) is rotatably connected to a plurality of guide rollers (2), and a felt cloth (3) is rotatably connected to the guide rollers (2), and wherein the guide rollers (2) are characterized in that: A cloth feeding structure (4) is provided in the middle of one side of the frame (1), and the cloth feeding structure (4) is connected to the felt cloth (3). A roller pressing structure (5) is provided on the top of one side of the frame (1). A vacuum drainage structure (6) and a collecting structure (24) are provided on the bottom of one side of the frame (1). The vacuum drainage structure (6) includes a machine table (7) fixedly connected to the frame (1). A driving part (8) is installed on the machine table (7). The driving part (8) is connected to a hollow roller (10) through a connecting part (9). The hollow roller (10) is connected to the felt cloth (3). A plurality of groups of holes (11) are provided on the hollow roller (10). The hollow roller (10) is rotatably connected to a rotating seat (12) fixedly connected to the machine table (7). The rotating seat (12) is connected to a sliding connection with the inner wall of the hollow roller (10). The vacuum suction part (13) of the hollow roller (10) is fixedly connected to the rotating seat (12), the connecting bar (14) is fixedly connected to the arc sleeve (15), the first spring (16) is installed in the arc sleeve (15), the first spring (16) is fixedly connected to a guide arm (18) slidably connected to the arc sleeve (15), the guide arm (18) is slidably connected to a linkage frame (19), a second spring (20) is installed between the guide arm (18) and the linkage frame (19), one end of the linkage frame (19) is fixedly installed with a shaft (21) adapted to the hole (11) of the hollow roller (10), the other end of the linkage frame (19) is fixedly installed with a rod body (22), the rod body (22) is slidably connected to an inclined pressure frame (23), and the inclined pressure frame (23) is fixedly connected to the arc sleeve (15).

2. The low paper breakage rate papermaking press equipment with a vacuum suction roller according to claim 1, characterized in that: The cloth feeding structure (4) comprises a first motor (25) fixedly connected to the frame (1); a driving roller (26) is fixedly mounted on the output shaft of the first motor (25); the driving roller (26) is connected to an anti-slip belt (27); and the anti-slip belt (27) is fixedly connected to the felt (3).

3. The low paper breakage rate papermaking press equipment with a vacuum suction roller according to claim 2, characterized in that: The rolling structure (5) includes a guide frame (28) fixedly connected to the frame (1), the guide frame (28) is fixedly connected to a first electric telescopic rod (29), the movable end of the first electric telescopic rod (29) is connected to a roller frame (31) via a pressure sensor (30), the roller frame (31) is slidably connected to the guide frame (28), the roller frame (31) is rotatably connected to a pressure roller (32), and the pressure roller (32) is coaxially connected to a second motor (33) fixedly mounted on the roller frame (31).

4. The low paper breakage rate papermaking press equipment with a vacuum suction roller according to claim 3, characterized in that: The driving part (8) includes a second electric telescopic rod (34) fixedly connected to the machine (7), a movable end of the second electric telescopic rod (34) is connected to a limit frame (35) slidably connected to the machine (7), a third motor (36) is fixedly mounted on the limit frame (35), a gear (38) is fixedly mounted on the output shaft of the third motor (36), the gear (38) is meshedly connected to a ring gear (39), the ring gear (39) is rotatably connected to the limit frame (35), and the ring gear (39) is fixedly connected to the connecting part (9) on a side facing the hollow roller (10).

5. The low paper breakage rate papermaking press equipment with a vacuum suction roller according to claim 4, characterized in that: The connecting portion (9) comprises a clamping frame (40) fixedly connected to the gear ring (39), and the clamping frame (40) is connected to a connecting frame (43) fixedly connected to the hollow roller (10) via bolts (41).

6. The low paper breakage rate papermaking press equipment with a vacuum suction roller according to claim 1, characterized in that: The vacuum suction part (13) includes a vacuum pump (37) fixedly connected to the frame (1), the vacuum pump (37) is fixedly connected to a vacuum box (44), a drain valve (45) is fixedly installed in the vacuum box (44), the vacuum box (44) is fixedly connected to an adapter (47) through a first hose (46), the adapter (47) is fixedly connected to a strip trough body (49) slidably connected to the inner wall of the hollow roller (10) through a first connecting pipe (48), the opening of the strip trough body (49) faces the inner wall of the hollow roller (10), and the first connecting pipe (48) is fixedly connected to the rotating seat (12).

7. The low paper breakage rate papermaking press equipment with a vacuum suction roller according to claim 1, characterized in that: The collecting structure (24) includes a filter box (17) fixedly connected to the frame (1), the rotating seat (12) is fixedly connected to a flow guide frame (42) arranged at the bottom of the hollow roller (10), the lower end of the flow guide frame (42) is arranged at the upper part of the opening of the filter box (17), and a water guide trough body (50) is installed on the frame (1).

8. A papermaking pressing process comprising a low paper breakage rate papermaking pressing device having a vacuum suction roller as claimed in claim 1, characterized in that: The following steps are involved: Step 1: placing the pulp on the felt (3), driving the felt (3) to move via the cloth feeding structure (4), and the felt (3) conveying the pulp to between the hollow roller (10) and the rolling structure (5); Step 2: The paper pulp on the felt cloth (3) is pressed together by the roller pressing structure (5) and the hollow roller (10), and the vacuum suction part (13) sucks the water in the felt cloth (3) through the holes (11) with negative pressure, and the paper pulp is pressed into a paper web; the driving part (8) drives the hollow roller (10) to rotate through the connecting part (9), and the shaft (21) moves along with the row of holes (11), and the shaft (21) presses the guide arm (18) through the linkage frame (19), and the guide arm (18) compresses the first spring (16), and the guide arm (18) During the compression of the first spring (16), the linkage frame (19) moves together with the guide arm (18), the rod body (22) and the inclined pressure frame (23) are pressed against each other, and the rod body (22) drives the shaft body (21) to separate from the eyelet (11) through the linkage frame (19). The first spring (16) applies a reset force to the guide arm (18), and the second spring (20) applies a reset force to the linkage frame (19), so that the shaft body (21) is pushed into another row of eyelets (11) and the end of the shaft body (21) extends from the eyelet (11); Step 3: The paper web moves along with the felt cloth (3) and away from the roller pressing structure (5), completing the dewatering of the formed pulp.

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