Inclined wire headbox for papermaking

Abstract

The utility model discloses an inclined wire headbox for papermaking, which relates to the technical field of headboxes, and comprises a headbox consisting of a box body, a weir pool, an observation port, rotating shafts, a homogenizing roller and a speed reducing motor, and the homogenizing roller is distributed on the inner side of the weir pool and fixed between the two rotating shafts. The gear motor is fixed to one end of the outer portion of the box body through a support, the output end of the gear motor is fixedly connected with one rotating shaft, two homogenizing rollers are symmetrically arranged in the weir pool, and an anti-sedimentation assembly is arranged between the two homogenizing rollers and used for scraping the bottom wall of the middle of the weir pool. According to the utility model, by arranging the anti-precipitation assembly, when the gear motor drives the homogenizing roller to rotate, the homogenizing roller can push the reciprocating scraping seat to reciprocate through the matching of the reciprocating spiral groove and the ball, so that the wall scraping operation on the bottom of the inner wall of the weir pool is realized, and meanwhile, the slurry is further stirred; therefore, the situation that fiber precipitates and residues appear in the middle area of the two homogenizing rollers is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of headboxes, in particular to an inclined wire headbox for papermaking. Background Art

[0002] The inclined wire headbox is a device used in papermaking machines. Its main function is to evenly distribute the pulp on the net to ensure the quality and uniformity of the paper. It is usually composed of a headbox body, a weir pool, a weir plate, a piping system, etc. The inclined wire headbox includes an open headbox, an air cushion headbox, and a hydraulic headbox. Among them, when the air cushion headbox is in use, a homogenizing roller is provided in the weir pool. The homogenizing roller is a rectifying device at the weir pool of the headbox and plays an important role in the quality of the pulp on the net. Holes are provided on the outside of the homogenizing roller. After the pulp flow passes through the homogenizing roller, a strong small vortex is formed between the two holes, which puts the pulp flow in a micro-interrupted state, thereby dispersing the fibers in the pulp flow and avoiding fiber flocculation.

[0003] In actual use, fiber sedimentation residue is likely to occur in the area between the two homogenizing rollers in the weir pool. In order to avoid this, an inclined mesh headbox for papermaking is provided. Utility Model Content

[0004] The purpose of the present utility model is to provide an inclined wire headbox for papermaking in order to solve the above-mentioned background problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a slant wire headbox for papermaking, comprising a headbox consisting of a box body, a weir pool, an observation port, a rotating shaft, a slurry roller, and a reduction motor, wherein the weir pool is formed on the inner side of the box body, the observation port is opened at one end of the box body and is connected to the weir pool, the rotating shaft is symmetrically connected to the two ends of the outer wall of the box body and passes through the inside of the weir pool, the slurry roller is distributed on the inner side of the weir pool and fixed between the two rotating shafts, the reduction motor is fixed to one end of the outer side of the box body through a bracket, and the output end of the reduction motor is fixed to a rotating shaft, two slurry rollers are symmetrically arranged inside the weir pool, and an anti-precipitation component is arranged between the two slurry rollers, and the anti-precipitation component is used to scrape the middle bottom wall of the weir pool;

[0006] The anti-precipitation component includes a reciprocating scraper seat, an arc-shaped limiting groove, a spherical groove, a ball, and a reciprocating spiral groove;

[0007] The arc-shaped limiting grooves are symmetrically formed at both ends of the outer wall of the reciprocating scraper seat. The reciprocating scraper seat is distributed between the two homogenizing rollers and is slidably sleeved with the outer wall of the homogenizing roller through the arc-shaped limiting grooves.

[0008] The spherical groove is opened inside the reciprocating scraper seat and penetrates into the inner side of an arc-shaped limiting groove. The ball is rotatably connected to the inner side of the spherical groove. The reciprocating spiral groove is opened outside the homogenizing roller. The ball protrudes into the inner side of the arc-shaped limiting groove and is rollingly connected to the inner wall of the reciprocating spiral groove.

[0009] When the homogenizing roller rotates, the reciprocating spiral groove cooperates with the ball to realize the horizontal reciprocating movement of the reciprocating scraper seat, and the moving reciprocating scraper seat is used to realize the scraping operation of the bottom wall in the middle of the weir pool.

[0010] As a further solution of the present invention: a plurality of resistance reducing holes are opened on the end surface of the reciprocating scraper seat, and the resistance reducing holes penetrate to the other end of the reciprocating scraper seat to reduce the movement resistance of the reciprocating scraper seat.

[0011] As a further solution of the present invention: the interior of the homogenizing roller is a cavity structure, and a through hole communicating with the inner cavity is opened on the outside of the homogenizing roller, and the reciprocating spiral groove and the through hole are staggered.

[0012] As a further solution of the present invention: the outer walls of the two homogenizing rollers are provided with reciprocating spiral grooves, the center of the ball is flush with the horizontal center line of the reciprocating scraper seat, and the horizontal center line of the reciprocating scraper seat is flush with the center line of the homogenizing roller.

[0013] As a further solution of the present invention: the bottom of the reciprocating scraper seat is fitted with the bottom of the inner wall of the weir pool, and the distance between the two ends of the reciprocating scraper seat and the ball matches the distance from the two ends of the reciprocating spiral groove to the end face of the inner wall of the weir pool.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] By setting up an anti-sedimentation component, when the reduction motor drives the slurry roller to rotate, the slurry roller can push the reciprocating scraper seat to move back and forth through the cooperation of the reciprocating spiral groove and the ball, thereby realizing the scraping operation on the bottom of the inner wall of the weir pool and further stirring the slurry, thereby effectively avoiding the occurrence of fiber precipitation residues in the middle area between the two slurry rollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a structural diagram of the utility model from another perspective;

[0018] Figure 3 This is a structural distribution diagram of the anti-sedimentation component and the homogenizing roller of the utility model;

[0019] Figure 4 This is a schematic structural diagram of the reciprocating scraper seat of the present invention;

[0020] Figure 5 It is a sectional exploded view of the reciprocating scraper seat of the present invention.

[0021] In the figure: 1. headbox; 102. box body; 102. weir pool; 103. observation port; 104. rotating shaft; 105. slurry roller; 106. reduction motor; 2. anti-sedimentation component; 201. reciprocating scraper seat; 202. arc-shaped limit groove; 203. spherical groove; 204. drag reduction hole; 205. ball; 206. reciprocating spiral groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the 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.

[0023] See also Figures 1 to 5 In an embodiment of the present invention, a slant wire headbox for papermaking includes a headbox 1 consisting of a box body 101, a weir pool 102, an observation port 103, a rotating shaft 104, a slurry roller 105, and a reduction motor 106. The weir pool 102 is formed on the inner side of the box body 101, the observation port 103 is opened at one end of the box body 101 and is connected to the weir pool 102, the rotating shaft 104 is symmetrically connected to the two ends of the outer wall of the box body 101 and passes through the interior of the weir pool 102, the slurry roller 105 is distributed on the inner side of the weir pool 102 and is fixed between the two rotating shafts 104, the reduction motor 106 is fixed to one end of the outer side of the box body 101 through a bracket, and the output end of the reduction motor 106 is fixedly connected to a rotating shaft 104, two slurry rollers 105 are symmetrically arranged inside the weir pool 102, and an anti-precipitation component 2 is arranged between the two slurry rollers 105. The anti-precipitation component 2 is used to scrape the bottom wall of the middle part of the weir pool 102.

[0024] The anti-precipitation component 2 includes a reciprocating scraper seat 201, an arc-shaped limiting groove 202, a spherical groove 203, a ball 205, and a reciprocating spiral groove 206; the arc-shaped limiting groove 202 is symmetrically formed at both ends of the outer wall of the reciprocating scraper seat 201, and the reciprocating scraper seat 201 is distributed in the middle of the two homogenizing rollers 105 and is slidably connected to the outer wall of the homogenizing roller 105 through the arc-shaped limiting groove 202; the spherical groove 203 is opened inside the reciprocating scraper seat 201 and passes through the inner side of an arc-shaped limiting groove 202, the ball 205 is rotatably connected to the inner side of the spherical groove 203, and the reciprocating spiral groove 206 is opened on the homogenizing roller 105 On the outside, the ball 205 protrudes to the inner side of the arc-shaped limiting groove 202 and is rollingly connected to the inner wall of the reciprocating spiral groove 206; when the slurry roller 105 rotates, the reciprocating spiral groove 206 cooperates with the ball 205 to realize the horizontal reciprocating movement of the reciprocating scraper seat 201, and the moving reciprocating scraper seat 201 is used to realize the scraping operation of the middle bottom wall of the weir pool 102; the bottom of the reciprocating scraper seat 201 is fitted with the bottom of the inner wall of the weir pool 102, and the distance between the two ends of the reciprocating scraper seat 201 and the ball 205 matches the distance from the two ends of the reciprocating spiral groove 206 to the end face of the inner wall of the weir pool 102.

[0025] In this embodiment: when the inclined mesh headbox is in use, the reduction motor 106 can drive the slurry roller 105 to rotate, and the rotation of the slurry roller 105 can stir the slurry in the weir pool 102, so that the slurry flow is in a slightly interrupted state, thereby dispersing the fibers in the slurry flow and avoiding fiber flocculation.

[0026] At the same time, when one slurry roller 105 rotates, the reciprocating scraper seat 201 can be pushed to move back and forth through the cooperation of the reciprocating spiral groove 206 and the ball 205, thereby realizing the scraping operation on the bottom of the inner wall of the weir pool 102, and further stirring the slurry, thereby effectively avoiding the occurrence of fiber precipitation residues in the middle area of ​​the two slurry rollers 105. It should be added that: the other slurry roller 105 can provide a limit and guide function for the movement of the reciprocating scraper seat 201, so as to avoid the deflection and offset of the reciprocating scraper seat 201.

[0027] Please refer to Figures 3-5 The end surface of the reciprocating scraper seat 201 is provided with a plurality of resistance reducing holes 204 , which penetrate to the other end of the reciprocating scraper seat 201 to reduce the movement resistance of the reciprocating scraper seat 201 .

[0028] In this embodiment, this structure allows part of the slurry to flow through the resistance-reducing holes 204 during the reciprocating movement of the reciprocating scraper 201 , thereby reducing the movement resistance of the reciprocating scraper 201 .

[0029] Please refer to Figure 3 The interior of the homogenizing roller 105 is a hollow structure, and a through hole communicating with the inner cavity is opened on the outside of the homogenizing roller 105, and the reciprocating spiral groove 206 and the through hole are staggered.

[0030] In this embodiment, this structure can ensure that the ball 205 will not interfere with the through hole during the rolling process along the reciprocating spiral groove 206.

[0031] Please refer to Figures 3-4 The outer walls of the two homogenizing rollers 105 are both provided with a reciprocating spiral groove 206 , the center of the ball 205 is flush with the horizontal center line of the reciprocating scraper seat 201 , and the horizontal center line of the reciprocating scraper seat 201 is flush with the center line of the homogenizing roller 105 .

[0032] In this embodiment: this structure allows the reciprocating scraper seat 201 to be installed without having to consider the orientation of the upper and lower end surfaces of the reciprocating scraper seat 201 and the ball 205. Either end of the upper and lower end surfaces of the reciprocating scraper seat 201 can face downward, and the ball 205 can face any slurry roller 105, thereby improving the convenience of installation.

[0033] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A slant mesh flow box for papermaking, comprising a flow box (1) consisting of a box body (101), a weir pool (102), an observation port (103), a rotating shaft (104), a slurry roller (105), and a reduction motor (106), wherein the weir pool (102) is formed on the inner side of the box body (101), the observation port (103) is opened at one end of the box body (101) and is connected to the weir pool (102), the rotating shaft (104) is symmetrically connected to the two ends of the outer wall of the box body (101) and passes through the inside of the weir pool (102), the slurry roller (105) is distributed on the inner side of the weir pool (102) and is fixed between the two rotating shafts (104), the reduction motor (106) is fixed to one end of the outer side of the box body (101) through a bracket, and the output end of the reduction motor (106) is fixedly connected to a rotating shaft (104), characterized in that: Two homogenizing rollers (105) are symmetrically arranged inside the weir pool (102), and an anti-sedimentation component (2) is arranged between the two homogenizing rollers (105). The anti-sedimentation component (2) is used to perform a wall scraping operation on the middle bottom wall of the weir pool (102); The anti-precipitation component (2) comprises a reciprocating scraper seat (201), an arc-shaped limiting groove (202), a spherical groove (203), a ball (205), and a reciprocating spiral groove (206); The arc-shaped limiting groove (202) is symmetrically formed at both ends of the outer wall of the reciprocating scraper seat (201); the reciprocating scraper seat (201) is distributed between the two homogenizing rollers (105) and is slidably sleeved with the outer wall of the homogenizing roller (105) through the arc-shaped limiting groove (202); The spherical groove (203) is provided inside the reciprocating scraper seat (201) and extends through the inner side of an arc-shaped limiting groove (202); the ball (205) is rotatably connected to the inner side of the spherical groove (203); the reciprocating spiral groove (206) is provided outside the homogenizing roller (105); the ball (205) protrudes to the inner side of the arc-shaped limiting groove (202) and is rollingly connected to the inner wall of the reciprocating spiral groove (206); When the homogenizing roller (105) rotates, the reciprocating spiral groove (206) cooperates with the ball (205) to achieve horizontal reciprocating movement of the reciprocating scraper (201), and the moving reciprocating scraper (201) is used to achieve a wall scraping operation on the bottom wall of the middle part of the weir pool (102).

2. The inclined wire headbox for papermaking according to claim 1, characterized in that: A plurality of resistance reducing holes (204) are provided on the end surface of the reciprocating scraper seat (201), and the resistance reducing holes (204) extend through the other end of the reciprocating scraper seat (201) to reduce the movement resistance of the reciprocating scraper seat (201).

3. The inclined wire headbox for papermaking according to claim 1, characterized in that: The interior of the homogenizing roller (105) is a hollow structure, and a through hole communicating with the inner cavity is provided on the outside of the homogenizing roller (105), and the reciprocating spiral groove (206) and the through hole are staggered.

4. The inclined wire headbox for papermaking according to claim 1, characterized in that: The outer walls of the two homogenizing rollers (105) are each provided with a reciprocating spiral groove (206), the center of the ball (205) is flush with the horizontal center line of the reciprocating scraper seat (201), and the horizontal center line of the reciprocating scraper seat (201) is flush with the center line of the homogenizing roller (105).

5. The inclined wire headbox for papermaking according to claim 1, characterized in that: The bottom of the reciprocating scraper seat (201) is fitted with the bottom of the inner wall of the weir pool (102), and the distance between the two ends of the reciprocating scraper seat (201) and the ball (205) matches the distance between the two ends of the reciprocating spiral groove (206) and the end surface of the inner wall of the weir pool (102).

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