Crescent headbox

Abstract

The invention relates to the technical field of headboxes, and discloses a crescent headbox which comprises a box body and further comprises a dilution pipe horizontally and rotatably installed in the box body, a first rotating shaft, a second rotating shaft and a third rotating shaft. The first cleaning assembly is arranged in the box body, the first cleaning assembly is located on the surface of the dilution pipe, and the first cleaning assembly is used for cleaning impurities attached to the surface of the dilution pipe; the multiple liquid outlet assemblies are evenly distributed on the surface of the dilution pipe, and the liquid outlet assemblies are used for diluting paper pulp in the box body; and the second cleaning assembly is used for cleaning impurities adhered to the liquid outlet assembly. According to the device, paper wadding attached to the surfaces of the dilution pipe and the liquid outlet pipe can be automatically cleaned during working, the situation that the paper wadding attached to the dilution pipe and the liquid outlet pipe is thicker and thicker is avoided, the content of the paper wadding in paper pulp is reduced, the smoothness of dilution liquid outlet is guaranteed, and then the using effect of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of headboxes, in particular to a crescent-shaped headbox. Background Art

[0002] The headbox is a key part of modern paper machines. Its structure and performance play a decisive role in the formation of paper sheets and the quality of paper. It can effectively disperse fibers. High-turbulence headboxes can generate high-intensity micro-turbulence, which can effectively disperse fibers, prevent fiber precipitation and re-flocculation, and effectively improve the strength of paper sheets.

[0003] For example, a crescent-shaped headbox disclosed in the patent with announcement number CN218147524U can discharge pulp from the headbox, but when diluting the pulp, liquid is only discharged from a single direction to dilute the pulp, resulting in uneven pulp concentration inside the headbox. In addition, a large amount of flocculants will adhere to the stirring rod when it is working, which will reduce the content in the pulp and reduce the effect of use. Therefore, it is urgent to design a crescent-shaped headbox. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a crescent-shaped headbox.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A crescent-shaped headbox, comprising a box body, and further comprising: Dilution tube: the dilution tube is installed inside the box in a horizontally rotating manner; A first cleaning component is arranged inside the box body and located on the surface of the dilution tube. The first cleaning component is used to clean impurities adhered to the surface of the dilution tube; A liquid outlet component, which has multiple liquid outlet components and is evenly distributed on the surface of the dilution pipe. The liquid outlet components are used to dilute the pulp inside the box; The second cleaning component has a plurality of second cleaning components, and the corresponding second cleaning components are arranged on the corresponding liquid outlet components, and the second cleaning components are used to clean the impurities adhered to the liquid outlet components.

[0006] As a further technical solution of the present invention, a pulp pump is installed on the top of the box body, and there are multiple pulp pumps, which are evenly distributed in a straight line with equal intervals. A multiple flow paddle pipes evenly distributed in a straight line are installed on the side of the box body, and a drive motor is installed on the side of the box body, and the output shaft of the drive motor is installed at the center of the end face of the dilution tube.

[0007] As a further technical solution of the present invention, a water injection pipe is installed on the side of the box away from where the drive motor is installed, the end of the water injection pipe is connected to the inside of the dilution pipe, and the surface of the water injection pipe is rotatably installed inside the dilution pipe.

[0008] As a further technical solution of the present invention, a first hole tube is slidably arranged inside the dilution tube, a plurality of evenly distributed holes are opened on the first hole tube, two symmetrically arranged first spring rods are horizontally fixedly installed on the inner end of the dilution tube, the telescopic ends of the two first spring rods are fixedly installed on the end face of the first hole tube, and one end of the first hole tube is open.

[0009] As a further technical solution of the present invention, the liquid outlet component includes: a liquid outlet pipe, the liquid outlet pipe is connected and installed on the surface of the dilution tube, a plurality of evenly distributed liquid outlet holes are opened on the surface of the liquid outlet pipe, a second hole tube is slidably arranged inside the liquid outlet pipe, a plurality of evenly distributed holes are opened on the second hole tube, two symmetrically arranged second spring rods are fixedly installed at the top end of the liquid outlet pipe, and the telescopic ends of the two second spring rods are fixedly installed on the top of the second hole tube.

[0010] As a further technical solution of the present invention, the first cleaning component includes: a first scraper ring, there are multiple first scraper rings, the multiple first scraper rings are evenly slidably sleeved on the surface of the dilution tube, a connecting rod is horizontally fixedly installed on the surface of each first scraper ring, a connecting plate is horizontally arranged inside the box body, and the ends of the multiple connecting rods away from the first scraper ring are fixedly installed on the side of the connecting plate.

[0011] As a further technical solution of the present invention, a telescopic rod is horizontally fixedly installed on the inner side of the box body, the telescopic end of the telescopic rod is fixedly installed at the center of the end face of the connecting plate, and a triangular block is also fixedly installed on the side of the connecting plate close to the connecting rod. Two paddle plates are symmetrically fixedly installed on the surface of the dilution tube. The two paddle plates are staggered, and when the paddle plates contact the inclined surfaces of the triangular block, they slide between them.

[0012] As a further technical solution of the present invention, the second cleaning assembly includes: a second scraper ring, which is slidably sleeved on the surface of the liquid outlet pipe, a U-shaped frame is arranged above the liquid outlet pipe, and the ends of the two vertical sides of the U-shaped frame are fixedly installed on the top of the second scraper ring, and a sleeve rod is vertically fixedly installed at the center of the bottom of the horizontal side of the U-shaped frame, and the end of the sleeve rod passes through the top of the liquid outlet pipe and the top of the second hole tube, and the surface of the sleeve rod is slidably installed in the top of the liquid outlet pipe through a spline.

[0013] As a further technical solution of the present invention, a support plate is fixedly installed horizontally on the inner wall of the liquid outlet pipe, an impeller is rotatably installed on the top of the support plate, a sleeve is fixedly installed vertically at the center of the top of the impeller, a spiral groove is opened inside the sleeve, the spiral groove is a reciprocating spiral groove, the surface of the sleeve rod is slidably arranged inside the sleeve, a sliding column is fixedly installed on the surface of the sleeve rod, and the sliding column is slidably installed inside the spiral groove.

[0014] The beneficial effects of the present invention are: Firstly, the present invention can automatically clean the paper lint attached to the surface of the dilution pipe and the liquid outlet pipe during operation through the arrangement of the box, the first cleaning component and the second liquid outlet component, thereby preventing the paper lint from being attached to the dilution pipe and the liquid outlet pipe and becoming thicker and thicker, which not only reduces the content of paper lint in the pulp, but also ensures the smoothness of the dilution liquid outlet, thereby improving the use effect of the device; Secondly, the present invention, through the arrangement of the liquid outlet component, the box body and the dilution tube, can discharge dilution liquid from all directions of the box body when diluting the concentration of the pulp inside the box body, and the dilution tube will rotate when diluting the pulp, further allowing the dilution liquid to be more evenly mixed with the pulp, thereby ensuring the uniformity of the pulp dilution, thereby improving the use effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a crescent-shaped headbox proposed by the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the top of a crescent-shaped headbox proposed by the present invention; Figure 3 for Figure 2 A magnified schematic diagram of part A; Figure 4 This is a schematic structural diagram of a crescent-shaped headbox proposed by the present invention with the box body removed; Figure 5 for Figure 4 A magnified schematic diagram of part B; Figure 6 This is a schematic cross-sectional structure diagram of a dilution pipe of a crescent-shaped headbox proposed by the present invention; Figure 7 for Figure 6 A magnified schematic diagram of part C; Figure 8 This is a schematic cross-sectional structure diagram of a liquid outlet pipe of a crescent-shaped headbox proposed by the present invention; Fig. 9 A schematic cross-sectional view of a second hole cylinder and a second scraper ring of a crescent-shaped headbox proposed by the present invention; Fig.10 The present invention provides a schematic diagram of the sleeve and sleeve rod separation and the sleeve cross-sectional structure of a crescent-shaped headbox.

[0016] In the figure: 1. box body; 2. pulp pump; 3. water injection pipe; 4. paddle pipe; 5. drive motor; 6. dilution pipe; 7. first scraper ring; 8. connecting rod; 9. connecting plate; 10. liquid outlet pipe; 11. second scraper ring; 12. U-shaped frame; 13. sleeve rod; 14. paddle plate; 15. telescopic rod; 16. triangular block; 17. first hole tube; 18. first spring rod; 19. second hole tube; 20. impeller; 21. support plate; 22. sleeve; 23. spiral groove; 24. sliding column. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0018] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0019] Please refer to the attached Figure 1 -Attached Fig.10 A crescent-shaped headbox includes a box body 1, and also includes: a dilution pipe 6, a first cleaning component, a liquid discharge component, and a second cleaning component. The dilution pipe 6 is horizontally rotatably installed inside the box body 1. The first cleaning component is arranged inside the box body 1, and the first cleaning component is located on the surface of the dilution pipe 6. The first cleaning component is used to clean impurities adhering to the surface of the dilution pipe 6. There are multiple liquid discharge components, and the multiple liquid discharge components are evenly distributed on the surface of the dilution pipe 6. The liquid discharge component is used to dilute the pulp inside the box body 1. There are multiple second cleaning components, and the corresponding second cleaning components are arranged on the corresponding liquid discharge components. The second cleaning component is used to clean impurities adhering to the liquid discharge component; The above-mentioned method enables the diluent to enter the box body 1 from different positions and angles to mix with the pulp, thereby ensuring the uniformity of the mixing of the diluent and the pulp, and can also automatically clean the paper fibers adhering to the dilution pipe 6 and the liquid outlet pipe 10, thereby ensuring the smooth operation of the equipment.

[0020] Please refer to the attached Figure 2 -Attached Fig.10In a preferred embodiment, a pulp pump 2 is connected and installed on the top of the box body 1, and there are multiple pulp pumps 2, and the multiple pulp pumps 2 are evenly distributed in a straight line with equal intervals. A plurality of flow paddle tubes 4 evenly distributed in a straight line are connected and installed on the side of the box body 1. A driving motor 5 is installed on the side of the box body 1, and the output shaft of the driving motor 5 is installed at the center of the end face of the dilution tube 6. A water injection pipe 3 is installed on the side of the box body 1 away from the driving motor 5. The end of the water injection pipe 3 is connected to the inside of the dilution tube 6, and the surface of the water injection pipe 3 is rotatably installed inside the dilution tube 6. A first hole tube 17 is slidably arranged inside the dilution tube 6, and a plurality of evenly distributed holes are opened on the first hole tube 17. Two symmetrically arranged first spring rods 18 are horizontally fixedly installed at the inner end of the dilution tube 6, and the telescopic ends of the two first spring rods 18 are fixedly installed on the end face of the first hole tube 17, and one end of the first hole tube 17 is open; Specifically, the diluent enters the dilution tube 6 through the water injection pipe 3. When the dilution tube 6 is filled with the dilution liquid and reaches a certain volume, it will impact the first hole tube 17 and move the first hole tube 17. The movement of the first hole tube 17 will connect the hole on the first hole tube 17 with the liquid outlet pipe 10.

[0021] Please refer to the attached Figure 1 -Attached Fig.10 In a preferred embodiment, the liquid outlet assembly includes: a liquid outlet pipe 10, the liquid outlet pipe 10 is connected and installed on the surface of the dilution pipe 6, a plurality of evenly distributed liquid outlet holes are opened on the surface of the liquid outlet pipe 10, a second hole tube 19 is slidably arranged inside the liquid outlet pipe 10, a plurality of evenly distributed holes are opened on the second hole tube 19, two symmetrically arranged second spring rods are fixedly installed at the top of the liquid outlet pipe 10, and the telescopic ends of the two second spring rods are fixedly installed on the top of the second hole tube 19; Furthermore, the movement of the second hole tube 19 will make the liquid outlet pipe 10 communicate with the box body 1 , and the diluent in the liquid outlet pipe 10 will be sprayed out from the liquid outlet hole on the liquid outlet pipe 10 .

[0022] Please refer to the attached Figure 1 -Attached Fig.10 In a preferred embodiment, the first cleaning component includes: a first scraper ring 7, a plurality of first scraper rings 7, and a plurality of first scraper rings 7 are uniformly slidably sleeved on the surface of the dilution tube 6, a connecting rod 8 is horizontally fixedly installed on the surface of each first scraper ring 7, a connecting plate 9 is horizontally arranged inside the box body 1, and the ends of the plurality of connecting rods 8 away from the first scraper ring 7 are fixedly installed on the side of the connecting plate 9, a telescopic rod 15 is horizontally fixedly installed on the side of the inside of the box body 1, and the telescopic end of the telescopic rod 15 is fixedly installed at the center of the end face of the connecting plate 9, and a triangular block 16 is also fixedly installed on the side of the connecting plate 9 close to the connecting rod 8, and two dial plates 14 are symmetrically fixedly installed on the surface of the dilution tube 6, and the two dial plates 14 are staggered. When the inclined surfaces of the dial plates 14 and the triangular block 16 contact, the dial plates 14 slide between the inclined surfaces of the triangular block 16; Preferably, when the triangular blocks 16 of the two paddles 14 come into contact, the triangular blocks 16 will move in different directions, so that the surface of the dilution tube 6 can be cleaned in a continuous reciprocating manner.

[0023] Please refer to the attached Figure 1 -Attached Fig.10 In a preferred embodiment, the second cleaning component includes: a second scraper ring 11, the second scraper ring 11 is slidably sleeved on the surface of the liquid outlet pipe 10, a U-shaped frame 12 is arranged above the liquid outlet pipe 10, and the two vertical ends of the U-shaped frame 12 are fixedly installed on the top of the second scraper ring 11, and a sleeve rod 13 is vertically fixedly installed at the center of the bottom of the horizontal side of the U-shaped frame 12. The end of the sleeve rod 13 passes through the top of the liquid outlet pipe 10 and the top of the second hole tube 19. The surface of the sleeve rod 13 is slidably installed in the top of the liquid outlet pipe 10 through a spline, and a support plate 21 is horizontally fixedly installed on the inner wall of the liquid outlet pipe 10. An impeller 20 is rotatably installed on the top of the support plate 21. A sleeve 22 is vertically fixedly installed at the center of the top of the impeller 20, and a spiral groove 23 is opened inside the sleeve 22. The spiral groove 23 is a reciprocating spiral groove 23. The surface of the sleeve rod 13 is slidably arranged inside the sleeve 22, and a sliding column 24 is fixedly installed on the surface of the sleeve rod 13. The sliding column 24 is slidably installed inside the spiral groove 23; Furthermore, the up and down movement of the U-shaped frame 12 drives the second scraper ring 11 to move up and down. The up and down movement of the second scraper ring 11 can clean the paper fibers adhering to the surface of the liquid outlet pipe 10, thereby ensuring the smoothness of the diluent outlet and the consistency of the pulp concentration.

[0024] The working principle of the present invention is as follows: firstly, the pulp pump 2 is started to pump the pulp into the box 1, and then the liquid inflow of the water injection pipe 3 is controlled according to the pulp concentration to control the pulp concentration; First, the driving motor 5 is started to drive the dilution tube 6 to rotate. The rotation of the dilution tube 6 drives the first spring rod 18, the paddle 14, the first hole tube 17 and the liquid outlet pipe 10 and the components on the liquid outlet pipe 10 to rotate together. It should be noted that the dilution tube 6 rotates with the center of the circle as the center. Then, the dilution liquid enters the dilution tube 6 through the water injection pipe 3. When the dilution liquid inside the dilution tube 6 is full and reaches a certain volume, it will impact the first hole tube 17 and move the first hole tube 17. The movement of the first hole tube 17 will connect the hole on the first hole tube 17 with the liquid outlet pipe 10, so that the dilution liquid is injected into all the liquid outlet pipes 10 synchronously, avoiding the dilution liquid being close to or far away from the water injection pipe 3. The diluent sprayed out of the liquid outlet pipe 10 is inconsistent, resulting in a poor pulp mixing effect. When the diluent passes through the diluent pipe 6 and enters the inside of the liquid outlet pipe 10, when the diluent inside the liquid outlet pipe 10 reaches a certain pressure, it will push the second hole cylinder 19 to move. The movement of the second hole cylinder 19 will connect the liquid outlet pipe 10 and the box body 1, and the diluent in the liquid outlet pipe 10 will be sprayed out from the liquid outlet hole on the liquid outlet pipe 10 to dilute the pulp in the box body 1. Since the liquid outlet pipe 10 rotates during operation, the diluent can be evenly dispersed to the inside of the box body 1, and the diluent and pulp inside the box body 1 can also be stirred and mixed. When the paddle 14 rotates, it will contact the triangular block 16. When one of the paddles 14 contacts the corresponding hypotenuse of the triangular block 16, it will drive the triangular block 16 to move. The movement of the triangular block 16 drives the connecting plate 9 to move. The movement of the connecting plate 9 drives the multiple connecting rods 8 to move. The movement of the multiple connecting rods 8 drives the first scraper ring 7 to move. The movement of the first scraper ring 7 will clean the paper wool adhered to the surface of the dilution tube 6, ensuring that the original concentration of the pulp and the concentration after dilution are normal. When the other paddle 14 contacts the other hypotenuse of the triangular block 16, it will move the triangular block 16 in the opposite direction. Similarly, it can be known that the first scraper ring 7 will also move in the opposite direction, and reciprocate in sequence, so that the surface of the dilution tube 6 can be cleaned continuously and reciprocatingly. When the diluted liquid enters the liquid outlet pipe 10, the impeller 20 will rotate, and the rotation of the impeller 20 drives the sleeve 22 to rotate, and the rotation of the sleeve 22 drives the spiral groove 23 to rotate. It should be noted that the sleeve rod 13 and the top of the liquid outlet pipe 10 are connected by a spline, and the spiral groove 23 is a reciprocating spiral groove 23. Therefore, the rotation of the spiral groove 23 drives the sliding column 24 to move up and down, and the sliding column 24 moves up and down, and the sleeve rod 13 moves up and down. The up and down movement of the sleeve rod 13 drives the U-shaped frame 12 to move up and down, and the up and down movement of the U-shaped frame 12 drives the second scraper ring 11 to move up and down. The up and down movement of the second scraper ring 11 will clean the paper lint adhered to the surface of the liquid outlet pipe 10, thereby ensuring the smoothness of the diluted liquid discharge and the consistency of the pulp concentration. In summary, the pulp can be diluted continuously by reciprocating in sequence, thereby improving the use effect of the equipment.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A crescent-shaped headbox, comprising a headbox body (1), characterized in that: Also includes: A dilution tube (6), the dilution tube (6) being horizontally rotatably mounted inside the box (1); A first cleaning component, the first cleaning component is arranged inside the box (1), and the first cleaning component is located on the surface of the dilution tube (6), and the first cleaning component is used to clean impurities adhered to the surface of the dilution tube (6); A liquid outlet component, wherein there are a plurality of the liquid outlet components, and the plurality of liquid outlet components are evenly distributed on the surface of the dilution pipe (6), and the liquid outlet component is used to dilute the pulp inside the box (1); The second cleaning component has a plurality of second cleaning components, and corresponding second cleaning components are arranged on corresponding liquid outlet components, and the second cleaning components are used to clean impurities adhered to the liquid outlet components.

2. A crescent-shaped headbox according to claim 1, characterized in that: The top of the box body (1) is connected to a pulp pump (2) installed thereon, and the pulp pumps (2) are multiple and evenly distributed in a straight line at equal intervals. The side of the box body (1) is connected to a pulp flow pipe (4) evenly distributed in a straight line. The side of the box body (1) is connected to a drive motor (5) installed thereon, and the output shaft of the drive motor (5) is installed at the center of the end face of the dilution pipe (6).

3. A crescent-shaped headbox according to claim 2, characterized in that: A water injection pipe (3) is installed on the side of the box body (1) away from the driving motor (5), the end of the water injection pipe (3) is connected to the inside of the dilution pipe (6), and the surface of the water injection pipe (3) is rotatably installed inside the dilution pipe (6).

4. A crescent-shaped headbox according to claim 3, characterized in that: A first bore tube (17) is slidably arranged inside the dilution tube (6), and a plurality of evenly distributed holes are provided on the first bore tube (17). Two symmetrically arranged first spring rods (18) are horizontally fixedly installed at the inner end of the dilution tube (6), and the telescopic ends of the two first spring rods (18) are fixedly installed on the end surface of the first bore tube (17), and one end of the first bore tube (17) is open.

5. A crescent-shaped headbox according to claim 4, characterized in that: The liquid outlet assembly comprises: a liquid outlet pipe (10), the liquid outlet pipe (10) being connected and mounted on the surface of the dilution pipe (6), the surface of the liquid outlet pipe (10) being provided with a plurality of evenly distributed liquid outlet holes, a second hole tube (19) being slidably arranged inside the liquid outlet pipe (10), the second hole tube (19) being provided with a plurality of evenly distributed holes, two symmetrically arranged second spring rods being fixedly mounted on the top end of the liquid outlet pipe (10), the telescopic ends of the two second spring rods being fixedly mounted on the top of the second hole tube (19).

6. A crescent-shaped headbox according to claim 5, characterized in that: The first cleaning assembly comprises: a first scraper ring (7), wherein there are a plurality of the first scraper rings (7), the plurality of the first scraper rings (7) are evenly slidably sleeved on the surface of the dilution tube (6), a connecting rod (8) is horizontally fixedly mounted on the surface of each of the first scraper rings (7), a connecting plate (9) is horizontally arranged inside the box body (1), and the ends of the plurality of connecting rods (8) away from the first scraper rings (7) are fixedly mounted on the side of the connecting plate (9).

7. A crescent-shaped headbox according to claim 6, characterized in that: A telescopic rod (15) is fixedly mounted horizontally on the inner side of the box body (1), and the telescopic end of the telescopic rod (15) is fixedly mounted at the center of the end face of the connecting plate (9). A triangular block (16) is also fixedly mounted on the side of the connecting plate (9) close to the connecting rod (8). Two paddle plates (14) are symmetrically fixedly mounted on the surface of the dilution tube (6). The two paddle plates (14) are staggered, and when the inclined surfaces of the paddle plates (14) and the triangular block (16) are in contact, the paddle plates (14) slide between the inclined surfaces of the triangular block (16).

8. A crescent-shaped headbox according to claim 7, characterized in that: The second cleaning assembly comprises: a second scraper ring (11), the second scraper ring (11) being slidably sleeved on the surface of the liquid outlet pipe (10), a U-shaped frame (12) being arranged above the liquid outlet pipe (10), the ends of two vertical sides of the U-shaped frame (12) being fixedly mounted on the top of the second scraper ring (11), a sleeve rod (13) being vertically fixedly mounted at the center of the bottom of the horizontal side of the U-shaped frame (12), the end of the sleeve rod (13) passing through the top of the liquid outlet pipe (10) and the top of the second hole tube (19), and the surface of the sleeve rod (13) being slidably mounted in the top of the liquid outlet pipe (10) via a spline.

9. A crescent-shaped headbox according to claim 8, characterized in that: A support plate (21) is fixedly mounted horizontally on the inner wall of the liquid outlet pipe (10); an impeller (20) is rotatably mounted on the top of the support plate (21); a sleeve (22) is fixedly mounted vertically at the center of the top of the impeller (20); a spiral groove (23) is formed inside the sleeve (22); the spiral groove (23) is a reciprocating spiral groove (23); the surface of the sleeve rod (13) is slidably arranged inside the sleeve (22); a sliding column (24) is fixedly mounted on the surface of the sleeve rod (13); the sliding column (24) is slidably mounted inside the spiral groove (23).

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