Headbox of paper machine

Abstract

The utility model relates to the technical field of headboxes, and discloses a paper machine headbox which comprises a box body, the top of the box body is communicated with a water inlet pipe, an opening is formed in the top of an inner cavity of the box body, a threaded sleeve piece is arranged at the opening in a sliding mode, and a fixing piece and a fixing block are fixedly connected to the top of the box body. A first servo motor is fixedly connected to one side of the fixing piece, a threaded rod is fixedly connected to an output shaft of the first servo motor, when the water conveying box slides towards the water inlet pipe in the box body, dilution water is conveyed into the box body through the water conveying box and the multiple sets of flow guide brushing bristles, and the dilution water is guided into slurry through the multiple sets of flow guide brushing bristles; through sliding of a plurality of flow guide brushing bristles and reciprocating sliding of a water supply box, the homogenizing roller can be cleaned when the flow guide brushing bristles are attached to the homogenizing roller.

Description

Technical Field

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

[0002] The headbox plays a vital role in the papermaking process, which directly affects the uniformity, strength and quality of the paper. Modern and efficient headbox design can improve the production efficiency of paper machines, reduce energy consumption, and improve the physical properties of paper. Due to its key role, the design and optimization of the headbox has always been an important research direction in the field of papermaking engineering.

[0003] The existing adjustment method of the dilution water headbox is to add dilution water in the slurry distribution tube bundle along the horizontal direction of the headbox, adjust the slurry concentration of each tube in the slurry distribution tube bundle by changing the amount of dilution water, and then use the slurry roller to perform the material leveling and feeding work to avoid slurry foaming affecting slurry forming. However, when adding dilution water, the slurry is easily affected by the impact of the dilution water to form a cross flow. Once the cross flow is too large, the slurry is difficult to form.

[0004] Therefore, it is necessary to design a paper machine headbox to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a headbox for a paper machine, which is used to solve the technical problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a papermaking machine headbox, comprising a box body, the top of the box body is connected to a water inlet pipe, the top of the inner cavity of the box body is provided with an opening, a threaded sleeve is slidably arranged at the opening, a fixing sheet and a fixing block are fixedly connected to the top of the box body, a first servo motor is fixedly connected to one side of the fixing sheet, a threaded rod is fixedly connected to the output shaft of the first servo motor, one end of the threaded rod is threadedly inserted into the interior of the threaded sleeve, a clamping block is fixedly connected to the bottom of the threaded sleeve, a water delivery box is slidably sleeved on the outer surface of the clamping block, a plurality of groups of equally spaced guide cleaning bristles are provided at the bottom of the water delivery box, and water delivery ports are opened on both sides of the bottom of the water delivery box for the plurality of groups of guide cleaning bristles, two symmetrical limit plates are fixedly connected to one side of the inner cavity of the box body, and the water delivery box is slidably arranged between the two limit plates, and a reciprocating mechanism is installed on the water delivery box, and the reciprocating mechanism is used to drive the water delivery box to slide back and forth inside the box body.

[0007] Preferably, the reciprocating mechanism includes a support plate, the two limit plates are provided with square sliding openings, and the two ends of the support plate are respectively slidably inserted into the inside of the two square sliding openings, and the two ends of the two support plates are fixedly connected with a first limit block, the top of the support plate is fixedly connected with a second servo motor, the output shaft of the second servo motor is fixedly connected with a rotating shaft, the bottom end of the rotating shaft is fixedly connected with a rotating disk, the bottom of the rotating disk is rotatably connected with a rotating column, the bottom of the rotating column is fixedly connected with a second limit block, the bottom end of the rotating column is slidably sleeved with an O-shaped sleeve block, and one end of the O-shaped sleeve block is fixedly connected to the center of one side of the water delivery box.

[0008] Preferably, the two water delivery ports on both sides of the multiple groups of flow-guiding cleaning bristles are arranged obliquely, and the bottom ends of the multiple water delivery ports are arranged toward the flow-guiding cleaning bristles.

[0009] Preferably, a slurry inlet and a slurry outlet are respectively provided on two sides of the box body, and two sides of the threaded sleeve are in contact with two sides of the opening.

[0010] Preferably, a slide groove is provided on one side of the top of the water delivery box, and the clamping block is slidably clamped inside the slide groove.

[0011] Preferably, the water supply box is located between the homogenizing roller and the pulp inlet, and the bottom of the water supply box is higher than the homogenizing roller.

[0012] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0013] The utility model arranges multiple groups of guide cleaning bristles. When the water delivery box slides toward the water inlet pipe inside the box body, the water delivery box and the multiple groups of guide cleaning bristles are used to deliver the diluted water into the inside of the box body, and the multiple groups of guide cleaning bristles are used to guide the diluted water to the inside of the slurry, thereby avoiding the cross flow of the slurry. Through the sliding of the multiple guide cleaning bristles and the reciprocating sliding of the water delivery box, the slurry roller can be cleaned when the multiple groups of guide cleaning bristles are in contact with the slurry roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the box structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the decomposition structure of the reciprocating mechanism of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure decomposition of the water delivery box of the utility model;

[0018] In the figure: 1. box body; 2. slurry outlet; 3. slurry inlet; 4. water inlet pipe; 5. first servo motor; 6. fixing plate; 7. threaded sleeve; 8. threaded rod; 9. fixing block; 10. water supply box; 11. water supply outlet; 12. slide groove; 13. guide brush; 14. second servo motor; 15. support plate; 16. limit plate; 17. first limit block; 18. rotating disk; 19. O-shaped sleeve; 20. rotating column; 21. second limit block; 22. clamping block. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Obviously, many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] See also Figure 1-4The utility model provides a papermaking machine headbox, including a box body 1, the top of the box body 1 is connected to a water inlet pipe 4, the top of the inner cavity of the box body 1 is provided with an opening, and a threaded sleeve 7 is slidably arranged at the opening, the top of the box body 1 is fixedly connected to a fixing sheet 6 and a fixing block 9, one side of the fixing sheet 6 is fixedly connected to a first servo motor 5, the output shaft of the first servo motor 5 is fixedly connected to a threaded rod 8, one end of the threaded rod 8 is threadedly inserted into the inside of the threaded sleeve 7, the bottom of the threaded sleeve 7 is fixedly connected to a clamping block 22, the outer surface of the clamping block 22 is slidably sleeved with a water delivery box 10, the bottom of the water delivery box 10 is provided with a plurality of groups of equally spaced guide cleaning bristles 13, and the plurality of groups of guide cleaning bristles 13 are provided with water delivery ports 11 on both sides of the bottom of the water delivery box 10, one side of the inner cavity of the box body 1 is fixedly connected to two symmetrical limit plates 16, and the water delivery box 10 is slidably arranged between the two limit plates 16, and the water delivery box 10 A reciprocating mechanism is installed on the box 10, which is used to drive the water delivery box 10 to slide back and forth inside the box body 1. By turning on the first servo motor 5 and utilizing the rotation of the threaded rod 8, the threaded sleeve 7 is driven to slide at the opening, and the threaded sleeve 7 is utilized to drive the water delivery box 10 to slide between the two limit plates 16, so that the water delivery box 10 is utilized to receive the dilution water input from the water inlet pipe 4, and the water flows into the multiple groups of guide cleaning brushes 13 through multiple water delivery ports 11, and the dilution water and the slurry entering the box body 1 are mixed by the diversion of the multiple groups of guide cleaning brushes 13, and the diversion work of the multiple groups of guide cleaning brushes 13 is utilized to avoid the cross flow of the slurry when the dilution water is mixed, and when the slurry is not transported, the water delivery box 10 is moved out from between the two limit plates 16 to fit with the slurry roller, and the multiple groups of guide cleaning brushes 13 are driven by the reciprocating mechanism to scrape the slurry roller, thereby avoiding the blockage of the multiple slurry inlet holes of the slurry roller and affecting the slurry transportation.

[0022] It should be noted that the reciprocating mechanism mentioned in the above description includes a support sheet 15. When the water delivery box 10 slides to disengage from the two limit plates 16 and makes the multiple groups of guide cleaning bristles 13 fit with the equalizing roller, by turning on the second servo motor 14, the rotating disk 18 is driven to rotate by the rotating shaft, and the rotating column 20 that rotates in a circular motion slides inside the O-shaped sleeve 19, so that under the limitation of the second limit block 21, the rotating disk 18 rotates one circle each time, so that the O-shaped sleeve 19 drives the water delivery box 10 to reciprocate inside the box body 1, thereby cleaning the equalizing roller, and the sliding of the support sheet 15 at the two square openings and the setting of the two first limit blocks 17 provide conditions for the sliding of the water delivery box 10 on the two limit plates 16.

[0023] In order to better deliver the dilution water input by the water inlet pipe 4 into the interior of the box 1 to mix with the slurry and avoid the occurrence of cross flow during mixing, the two water supply ports 11 on both sides of the multiple groups of guide cleaning bristles 13 are arranged at an angle, and the bottom ends of the multiple water supply ports 11 are arranged toward the guide cleaning bristles 13, so that the dilution water can be guided into the slurry for mixing through the multiple groups of guide cleaning bristles 13.

[0024] In order to facilitate the transportation and output of slurry, a slurry inlet 3 and a slurry outlet 2 are respectively opened on both sides of the box body 1, and the two sides of the threaded sleeve 7 are in contact with the two sides of the opening.

[0025] Furthermore, in order to enable the water delivery box 10 to slide inside the housing 1 when the rotating disk 18 rotates, a slide groove 12 is provided on one side of the top of the water delivery box 10, and a block 22 is slidably mounted inside the slide groove 12, thus providing conditions for the sliding of the water delivery box 10.

[0026] In order to facilitate mixing of the homogenizing roller without forming a cross flow and to clean the homogenizing roller, the water supply box 10 is located between the homogenizing roller and the pulp inlet 3, and the bottom of the water supply box 10 is higher than the homogenizing roller.

[0027] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0028] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0029] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A headbox for a paper machine, comprising a headbox body (1), characterized in that: The top of the box body (1) is connected to a water inlet pipe (4); the top of the inner cavity of the box body (1) is provided with an opening, a threaded sleeve (7) is slidably provided at the opening, a fixing sheet (6) and a fixing block (9) are fixedly connected to the top of the box body (1), a first servo motor (5) is fixedly connected to one side of the fixing sheet (6), an output shaft of the first servo motor (5) is fixedly connected to a threaded rod (8), one end of the threaded rod (8) is threadedly inserted into the inside of the threaded sleeve (7), a clamping block (22) is fixedly connected to the bottom of the threaded sleeve (7), and an outer portion of the clamping block (22) is fixedly connected to the outer portion of the fixing sheet (6). A water delivery box (10) is slidably sleeved on the surface, a plurality of groups of equally spaced guide cleaning bristles (13) are arranged at the bottom of the water delivery box (10), and the plurality of groups of guide cleaning bristles (13) are provided with water delivery ports (11) on both sides of the bottom of the water delivery box (10), two symmetrical limit plates (16) are fixedly connected to one side of the inner cavity of the box body (1), and the water delivery box (10) is slidably arranged between the two limit plates (16), and a reciprocating mechanism is installed on the water delivery box (10), and the reciprocating mechanism is used to drive the water delivery box (10) to slide back and forth inside the box body (1).

2. A paper machine headbox according to claim 1, characterized in that: The reciprocating mechanism comprises a support plate (15), the two limit plates (16) are both provided with a square sliding opening, and the two ends of the support plate (15) are respectively slidably inserted into the inside of the two square sliding openings, and the two ends of the two support plates (15) are fixedly connected to a first limit block (17), the top of the support plate (15) is fixedly connected to a second servo motor (14), the output shaft of the second servo motor (14) is fixedly connected to a rotating shaft, the bottom end of the rotating shaft is fixedly connected to a rotating disk (18), the bottom of the rotating disk (18) is rotatably connected to a rotating column (20), the bottom of the rotating column (20) is fixedly connected to a second limit block (21), the bottom end of the rotating column (20) is slidably sleeved with an O-shaped sleeve block (19), and one end of the O-shaped sleeve block (19) is fixedly connected to the center of one side of the water delivery box (10).

3. A paper machine headbox according to claim 1, characterized in that: The two water supply ports (11) on both sides of the multiple groups of flow-guiding cleaning bristles (13) are arranged at an angle, and the bottom ends of the multiple water supply ports (11) are arranged toward the flow-guiding cleaning bristles (13).

4. A paper machine headbox according to claim 1, characterized in that: The box body (1) is provided with a slurry inlet (3) and a slurry outlet (2) on both sides, and the two sides of the threaded sleeve (7) are fitted with the two sides of the opening.

5. A paper machine headbox according to claim 1, characterized in that: A slide groove (12) is provided on one side of the top of the water delivery box (10), and the clamping block (22) is slidably clamped inside the slide groove (12).

6. A paper machine headbox according to claim 1, characterized in that: The water supply box (10) is located between the homogenizing roller and the pulp inlet (3), and the bottom of the water supply box (10) is higher than the homogenizing roller.

Images