A paper machine pressing and drying system

Abstract

The present invention relates to the technical field of papermaking, and more specifically, it relates to a paper machine pressing and drying system, comprising a machine body, a pressing unit and a drying unit arranged in the machine body, the pressing unit having a support frame, a plurality of couch rollers and a plurality of pressure rollers, a pressing station for squeezing paper is formed between the couch rollers and the pressure rollers, a water absorption component is provided between two adjacent groups of pressure rollers and couch rollers, the water absorption component is rotatably connected to the support frame, the water absorption component comprises two water absorption rollers and a power unit in an upper and lower relationship, a station for squeezing and absorbing water for paper is formed between the two water absorption rollers, and the water absorption component is provided to absorb water overflowing from wet paper passing through two adjacent groups of pressure rollers and couch rollers, thereby improving the efficiency of pressing and drying.

Description

Technical Field

[0001] The present invention relates to the technical field of papermaking, and more particularly to a paper machine pressing and drying system. Background Art

[0002] The paper machine includes the main machine such as headbox, wire section, press section, drying section, calender, reel and transmission section and auxiliary systems such as steam, water, vacuum, lubrication and heat recovery. The press section and drying section are used to further dehydrate the formed wet paper sheets by pressurizing them and then dry them.

[0003] When the existing pressing section applies pressure to the wet paper sheets, water in the wet paper sheets will be squeezed out and overflow to the surrounding sides, so that the paper in front and behind the wet paper sheets entering the pressing section will be soaked in liquid again, affecting the pressing effect, and thus causing the efficiency of the pressed paper sheets to be dried when entering the drying section to be greatly affected. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a paper machine pressing and drying system which has a reasonable and simple structure, strong practicality and improves the pressing and drying efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A paper machine pressing and drying system comprises a machine body, a pressing unit and a drying unit arranged in the machine body,

[0007] The pressing unit comprises a support frame, a plurality of couch rollers and a plurality of press rollers. The couch rollers are placed above the press rollers. A pressing station for squeezing paper is formed between the couch rollers and the press rollers. A water absorbing component is arranged between two adjacent groups of press rollers and the couch rollers. The water absorbing component is rotatably connected to the support frame.

[0008] The water absorption assembly includes two water absorption rollers and a power unit in an upper and lower relationship. The two water absorption rollers form a station for squeezing and absorbing water from paper.

[0009] The drying unit comprises a frame, a plurality of transmission rollers and a plurality of drying rollers. The drying rollers are connected with a heat transfer device to form heat transfer. A drying station for drying paper is formed between the transmission rollers and the drying rollers.

[0010] The present invention is further configured as follows: the water-absorbing roller is rotatably connected to the support frame, one end of the water-absorbing roller is connected to a driven gear,

[0011] The power unit includes a first power group and a second power group.

[0012] The first power group includes a base, a motor, and a displacement cylinder. The motor and the base are slidably connected, the output end of the displacement cylinder is connected to the motor, and the output of the motor is connected to a driving gear.

[0013] The second power group comprises a bearing seat and a telescopic cylinder. The other end of the water-absorbing roller is rotatably connected to the bearing seat, and the output end of the telescopic cylinder is connected to the bearing seat.

[0014] The present invention is further configured as follows: the water-absorbing roller comprises a shaft body and a water-absorbing sleeve sleeved outside the shaft body, and the shaft body and the water-absorbing sleeve are movably connected.

[0015] A connecting rod rotatably connected to the bearing seat is fixed at one end of the shaft body.

[0016] The water-absorbing sleeve comprises two base plate parts and a cotton strip part which are symmetrically arranged. The cotton strip part is arranged between the two base plate parts and is fixed to the base plate parts.

[0017] The present invention is further configured as follows: a guide rod is provided at the center of one of the base plates, two limit rods are provided around the guide rod, the limit rods are in the shape of hexagonal prisms, and a work station hole adapted to the guide rod and the limit rod is opened on the shaft.

[0018] The present invention is further configured as follows: a pull rod on the bearing seat that is movably connected to the support frame has a clamping block on the end thereof for contacting with the base plate.

[0019] The present invention is further configured as follows: the heat transfer device includes a heat source and an output unit, the heat source is input to the output unit, and the output unit includes an electric heating rod placed in the drying roller to generate heat and a pipe for transporting steam to the transmission roller.

[0020] Compared with the shortcomings of the prior art, the beneficial effects of the present invention are:

[0021] The water absorbing component is arranged to absorb the water overflowed from the wet paper passing through two adjacent groups of pressing rollers and couching rollers, thereby improving the efficiency of pressing and drying.

[0022] After absorbing water, the shaft in the water absorption roller can be dragged out so that the water absorption sleeve can be unsupported. The water absorption sleeve is then driven by a motor to rotate to twist the cotton strip on the water absorption sleeve and discharge the water absorbed in the cotton strip, thereby ensuring its water absorption performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a three-dimensional schematic diagram of the water absorbing assembly of the present invention in the first direction;

[0025] Figure 3 It is a three-dimensional schematic diagram of the water absorbing assembly of the present invention in the first direction;

[0026] Figure 4 An exploded view of the suction roller.

[0027] Machine body 1, support frame 11, couch roller 21, pressure roller 22, water absorption assembly 23, transmission roller 24, drying roller 25, water absorption roller 3, first power group 4, second power group 5, shaft 31, water absorption sleeve 32, base plate part (321, 322), cotton strip part 323, hexagonal hole 320, pull rod 6, pressure block 61, rod body 611, base 41, motor 42, driving gear 421, displacement cylinder 43, telescopic cylinder 51, driven gear 52, bearing seat 7, connecting block 71, cross bar 72, Implementation

[0028] Reference Figures 1 to 4 The embodiments of the present invention are further described.

[0029] The specific structure of this embodiment includes a machine body 1, a pressing unit and a drying unit placed in the machine body 1.

[0030] Pressing unit: It has a support frame 11, a plurality of couch rollers 21 and a plurality of press rollers 22. The couch rollers 21 are placed above the press rollers 22. The couch rollers 21 and the press rollers 22 form a pressing station for squeezing paper. Both ends of the couch rollers 21 and the press rollers 22 are connected to bearings arranged on the support frame 11.

[0031] A water absorbing assembly 23 is provided between two adjacent groups of pressing rollers 22 and couching rollers 21 .

[0032] The water absorption assembly 23 includes two water absorption rollers 3 in an upper and lower relationship and a power unit, and a station for squeezing and absorbing water from paper is formed between the two water absorption rollers 3 .

[0033] The power unit includes a first power group 4 and a second power group 5. The first power group 4 includes a base 41, a motor 42, and a displacement cylinder 43. The motor 42 and the base 41 are slidably connected. The output end of the displacement cylinder 43 is connected to the motor 42. The output of the motor 42 is connected to a driving gear 421.

[0034] The second power group 5 includes two bearing seats 7 and two telescopic cylinders 51 corresponding to the two water-absorbing rollers 3, and one end of the water-absorbing roller 3 is connected to a driven gear 52. The other end of the water-absorbing roller 3 is rotatably connected to the bearing seat 7, and the output end of the telescopic cylinder 51 is connected to the bearing seat 7. The two bearing seats 7 are fixed by a connecting block 71, and a cross bar 72 is fixed on the connecting block 71. The output ends of the two telescopic cylinders 51 are connected to the cross bar 72.

[0035] The water-absorbing roller 3 comprises a shaft body 31 and a water-absorbing sleeve 32 sleeved outside the shaft body 31. The shaft body 31 and the water-absorbing sleeve 32 are movably connected.

[0036] A connecting rod 311 rotatably connected to the bearing seat 7 is fixed at one end of the shaft body 31 .

[0037] The water-absorbing sleeve 32 comprises two symmetrically arranged base plates (321, 322) and a cotton strip portion 323. The cotton strip portion 323 is placed between the two base plates (321, 322) and fixed to the base plates (321, 322). The cotton strip portion 323 is composed of a plurality of water-absorbing cotton strips, and there is a gap between two adjacent water-absorbing cotton strips.

[0038] A guide rod is provided at the inner center of one of the base plates 321, and two limit rods are provided around the guide rod. The limit rods are in the shape of hexagonal prisms, and a work position hole 30 adapted to the guide rod and the limit rod is provided on the shaft body 31. When the shaft body 31 is placed in the water absorption sleeve 32, the limit rod and the work position hole are connected, so that when the water absorption sleeve 32 is driven to rotate, the shaft body 31 and the water absorption sleeve 32 are driven to rotate as a whole. The guide rod is convenient for the shaft body 31 to ensure the stable displacement of the shaft body 31 when it is driven to move.

[0039] A transmission rod 521 is disposed at the center of the outer side of the base plate portion 321 , and the driven gear 52 is connected to the end of the transmission rod 521 .

[0040] A pull rod 6 movably connected to the support frame 11 is provided on the bearing seat 7, and a clamping block 61 for contacting the base part 322 is provided on the end of the pull rod 6. A hexagonal column-shaped rod body 611 is provided on the end face of the clamping block 61, and a hexagonal hole 320 for the rod body 611 to extend into is opened at a position corresponding to the clamping block 61 on the base part 322.

[0041] When the water absorption sleeve 32 needs to be drained, the two telescopic cylinders 51 drive the cross rod 72 to move outward while moving the bearing seat 7 and the shaft body 31 outward, so that the shaft body 31 is pulled away from the water absorption sleeve 32 until the rod body 611 on the clamping block 61 is immersed in the hexagonal hole 320 to position the water absorption sleeve 32.

[0042] Then the displacement cylinder 43 controls the motor 42 to move forward, so that the driving gear 421 and the two driven gears 52 are meshed. When the motor 42 drives the driving gear 421 to rotate, it also drives the driven gear 52 to rotate. Since one end of the water-absorbing sleeve 32 is fixed and limited, it no longer rotates under force. When the motor 42 drives the other end of the water-absorbing sleeve 32 to rotate, the sliver part 323 generates a torsional force. When the sliver is twisted, the water in the water-absorbing sleeve is discharged.

[0043] The drying unit comprises a plurality of transmission rollers 24 and a plurality of drying rollers 25. The drying rollers 25 are connected to a heat transfer device to form heat transfer, and a drying station for drying paper is formed between the transmission rollers 24 and the drying rollers 25. Both ends of the transmission rollers 24 and the drying rollers 25 are rotatably connected to the bearings on the support frame 11.

[0044] The heat transfer device includes a heat source and an output unit. The heat source is input to the output unit. The output unit includes an electric heating rod placed in the drying roller 25 to generate heat and a pipe for conveying steam to the transmission roller 24. The heat source includes an electric heat source and steam. The electric heat source notifies the electric heating rod to generate heat and transfers the heat to the outer wall of the drying roller 25 to dry the paper. The steam is the heat energy generated during the paper production process in the factory area. It is used to convey the transmission roller 24 to preheat the transmission roller 24, maintain the temperature of the transmission roller 24, and improve the utilization rate of the steam.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A paper machine pressing and drying system, characterized in that: It comprises a machine body (1), a pressing unit and a drying unit disposed in the machine body (1), A pressing unit comprises a support frame (11), a plurality of couch rollers (21) and a plurality of press rollers (22); the couch rollers (21) are arranged below the press rollers (22); a pressing station for pressing paper is formed between the couch rollers (21) and the press rollers (22); a water absorbing assembly (23) is arranged between two adjacent groups of press rollers (22) and the couch rollers (21); the water absorbing assembly (23) is rotatably connected to the support frame (11); The water absorption assembly (23) comprises two water absorption rollers (3) in an upper and lower relationship and a power unit, and a station for squeezing and absorbing water from paper is formed between the two water absorption rollers (3). A drying unit comprises a frame, a plurality of transmission rollers (24) and a plurality of drying rollers (25), wherein the drying rollers (25) are connected to a heat transfer device to form heat transfer, and a drying station for drying paper is formed between the transmission rollers (24) and the drying rollers (25). The water-absorbing roller (3) and the support frame (11) are rotatably connected, and one end of the water-absorbing roller (3) is connected to a driven gear (52). The power unit comprises a first power group (4) and a second power group (5). The first power group (4) comprises a base (41), a motor (42), and a displacement cylinder (43); the motor (42) and the base (41) are slidably connected; an output end of the displacement cylinder (43) is connected to the motor (42); an output end of the motor (42) is connected to a driving gear (421); The second power group (5) comprises a bearing seat (7) and a telescopic cylinder (51), the other end of the water-absorbing roller (3) is rotatably connected to the bearing seat (7), and the output end of the telescopic cylinder (51) is connected to the bearing seat (7); The water-absorbing roller (3) comprises a shaft body (31) and a water-absorbing sleeve (32) sleeved outside the shaft body (31), wherein the shaft body (31) and the water-absorbing sleeve (32) are movably connected. A connecting rod rotatably connected to the bearing seat (7) is fixed at one end of the shaft body (31). The water absorption sleeve (32) comprises two base plate parts (321, 322) and a cotton strip part (323) which are symmetrically arranged, and the cotton strip part (323) is placed between the two base plate parts (321, 322) and fixed to the base plate parts (321, 322); A guide rod is provided at the center of one of the base plates (321), and two limit rods are provided around the guide rod. The limit rods are in the shape of hexagonal prisms, and a work position hole (30) adapted to the guide rod and the limit rod is opened on the shaft (31); A pull rod (6) movably connected to the support frame (11) on the bearing seat (7) has a clamping block (61) disposed at the end thereof for contacting the base plate portion (322).

2. A paper machine pressing and drying system according to claim 1, characterized in that: The heat transfer device comprises a heat source and an output unit, wherein the heat source is input to the output unit, and the output unit comprises an electric heating rod placed in a drying roller (25) for generating heat, and a pipe for conveying steam to a transmission roller (24).

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