A paper machine spraying system

Abstract

This application relates to a pulp spraying system for a papermaking machine, comprising a papermaking machine body and a headbox fixedly mounted on the papermaking machine body. The system is characterized by: a distribution box fixedly mounted on the papermaking machine body; a feeding assembly for conveying pulp from the headbox to the distribution box; a connecting tube rotatably connected to the distribution box, communicating with the interior of the distribution box; multiple discharge pipes slidably mounted on the distribution box along its circumference; a driving assembly for driving the discharge pipes to slide; a connecting sleeve connecting multiple branch pipes, each branch pipe communicating with a discharge pipe; a discharge port on each discharge pipe along its length for spraying pulp onto a forming wire; and a first sealing assembly for closing the discharge port on the discharge pipe. This application enables the papermaking machine to adapt to the production of thicker paper.

Description

Technical Field

[0001] This application relates to the technical field of papermaking machines, and in particular to a papermaking machine spraying system. Background Technology

[0002] A paper machine is a general term for a complete set of equipment that links different parts of the pulp to form a paper web. It is a machine that produces paper from a pulp suspension that meets the requirements of papermaking through processes such as forming wire dewatering, mechanical extrusion dewatering, and drying.

[0003] Currently, papermaking machines mainly include a headbox, forming wire, press section, drying section, calender, winding machine, and various transmission auxiliary equipment. During papermaking, the pulp is sprayed onto the forming wire through the headbox distributor to form wet paper. The formed wet paper sheet is then pressed by two rollers with hard and soft surfaces to further dehydrate the wet paper sheet. After that, several drying cylinders dry the wet paper. Finally, the paper surface is flattened by the pressure rollers, and the formed paper is wound together by the winding machine.

[0004] However, when pulp is directly sprayed onto the forming wire via a headbox distributor, the time for the pulp to be evenly distributed on the forming wire is relatively short, making it difficult to adapt to the production of thicker paper. Summary of the Invention

[0005] In order to enable papermaking machines to produce thicker paper, this application provides a papermaking machine spraying system.

[0006] This application provides a paper machine spraying system, which adopts the following technical solution:

[0007] A paper machine spraying system includes a paper machine body and a headbox fixedly mounted on the paper machine body. The system is characterized by: a distribution box fixedly mounted on the paper machine body; a feeding assembly for conveying pulp from the headbox to the distribution box; a connecting tube rotatably connected to the distribution box, communicating with the interior of the distribution box; multiple discharge pipes slidably mounted on the distribution box along its circumference; a driving assembly for driving the multiple discharge pipes to slide; a connecting sleeve connecting multiple branch pipes, each branch pipe communicating with a discharge pipe; a discharge port on each discharge pipe along its length, used to spray pulp onto a forming wire; and a first sealing assembly for closing the discharge port on the discharge pipe.

[0008] By adopting the above technical solution, the pulp in the headbox is transported to the distribution box by the pulp feeding assembly. The pulp entering the distribution box is introduced into each distribution pipe through the connecting tube and sprayed onto the forming wire through the pulp outlet on the discharge pipe. When thicker paper needs to be produced, the drive assembly drives multiple discharge pipes to slide around the circumference of the distribution box, and keeps the movement speed of the discharge pipes consistent with the movement speed of the forming wire. This allows the same discharge pipe to continuously spray pulp onto the same position on the forming wire, increasing the thickness of the pulp evenly distributed on the forming wire. The multiple discharge pipes also ensure that the paper formed on the forming wire is continuous. When the discharge pipes move to the sides or top of the distribution box, the discharge outlet is closed by the first sealing assembly, making the thickness of the paper formed on the forming wire uniform. This allows the paper machine to adapt to the production of thicker paper.

[0009] Optionally, the first sealing assembly includes a sealing plate and a first driving source. The sidewall of the slurry outlet is provided with a sealing groove communicating with the slurry outlet along the circumference of the slurry outlet pipe. The sealing plate is rotatably disposed in the sealing groove. The first driving source is used to drive the sealing plate to rotate.

[0010] By adopting the above technical solution, the sealing plate is rotated by the first driving source, so that the sealing plate is screwed into the slurry outlet, thereby achieving the sealing of the slurry outlet.

[0011] Optionally, a mixing tank is fixedly installed on the paper machine body. The mixing tank is equipped with a stirring component for stirring the pulp raw materials. The mixing tank is connected to a guide pipe, which is connected to the headbox. A valve is installed on the guide pipe.

[0012] By adopting the above technical solution, the pulp raw materials are put into the mixing tank, and the raw materials are mixed by the mixing component. Then, the valve on the pulp guide pipe is opened to introduce the mixed pulp into the headbox, and the pulp is continuously supplied to the headbox to improve the processing efficiency.

[0013] Optionally, the stirring assembly includes a stirring paddle and a second drive source, wherein the stirring paddle is rotatably disposed inside the mixing tank, and the second drive source is used to drive the stirring paddle to rotate.

[0014] By adopting the above technical solution, the stirring paddle is driven to rotate by the second driving source, thereby stirring and mixing the pulp raw materials in the mixing tank.

[0015] Optionally, a mounting plate is rotatably mounted inside the mixing tank, and the stirring paddle is rotatably mounted on the mounting plate, with the rotation axis of the stirring paddle being eccentrically set to the rotation axis of the mounting plate. A third drive source for driving the mounting plate to rotate is provided on the mixing tank.

[0016] By adopting the above technical solution, when the mixing paddle is mixing the pulp raw materials, the mounting plate is driven to rotate by the third drive source, which further expands the mixing area of ​​the mixing paddle and improves the mixing effect.

[0017] Optionally, a sedimentation tank and a water guide plate are fixedly installed on the paper machine body. The water guide plate is used to guide the pulp dripping from the forming wire into the sedimentation tank. A water storage tank is fixedly installed on the side wall of the sedimentation tank. A water inlet communicating with the water storage tank is opened on the sedimentation tank. A water filter for filtering the pulp is installed at the water inlet. A water conveying component for conveying water in the water storage tank to the mixing tank is installed in the water storage tank.

[0018] By adopting the above technical solution, the pulp dripping from the forming wire is guided to the sedimentation tank by the water guide plate for sedimentation, then filtered by the water filter, and then collected in the water storage tank through the water inlet. Finally, it is transported to the mixing tank for reuse through the water conveying assembly, which greatly improves the water utilization rate.

[0019] Optionally, the top wall of the sedimentation tank is provided with an installation groove communicating with a water inlet. A filter plate is rotatably installed in the installation groove. The filter plate is provided with at least two placement slots. The bottom wall of the placement slot is provided with several first through holes, and the placement slot is used to communicate with the water inlet. The water storage tank is provided with a fourth driving source for driving the filter plate to rotate. The filter element includes filter cotton, and each placement slot is provided with filter cotton. The filter plate is provided with a fixing component for preventing the filter cotton from falling out of the placement slot.

[0020] By adopting the above technical solution, filter cotton is placed in the placement slot of the filter plate and fixed by a fixing component. Then, the filter plate is driven to rotate by a fourth drive source, so that the placement slot is connected to the water inlet, and the pulp is filtered through the filter cotton. Furthermore, when the filter cotton becomes dirty, clean filter cotton is placed in other placement slots first. The filter plate is then driven to rotate by the fourth drive source, so that the placement slot containing the clean filter cotton is connected to the water inlet, and the dirty filter cotton is replaced. This achieves uninterrupted operation and greatly improves processing efficiency.

[0021] Optionally, the fixing component includes a cover plate and a fixing member. The filter plate has at least two receiving slots, each of which is connected to a placement slot. The cover plate is adapted to the receiving slots. The fixing member is used to fix the cover plate in the receiving slots. The cover plate has several second through holes.

[0022] By adopting the above technical solution, after the filter cotton is placed in the placement tank, the cover plate is placed in the receiving tank and fixed in the receiving tank by the fastener, thereby preventing the filter cotton from falling out of the placement tank.

[0023] Optionally, a baffle is fixedly installed inside the sedimentation tank, a discharge port is opened on the baffle, a second sealing component for closing the discharge port is provided on the baffle, a discharge port is opened on the side wall of the sedimentation tank, and the discharge port is opened on the side of the baffle close to the bottom wall of the sedimentation tank, and a third sealing component for closing the discharge port is provided on the sedimentation tank.

[0024] By adopting the above technical solution, the pulp raw material settled in the sedimentation tank enters the bottom of the partition through the discharge port on the partition plate. When the pulp settles to a certain extent, the discharge port is sealed by the second sealing component and the third sealing component is opened, so that the sediment in the sedimentation tank can be discharged from the discharge port, thus cleaning the sediment in the sedimentation tank. Moreover, during the cleaning of the sedimentation tank, it is not necessary to stop the machine and drain the water in the sedimentation tank, further improving the construction efficiency.

[0025] Optionally, a scraper is slidably arranged in the sedimentation tank along the direction close to or away from the discharge port. The scraper is arranged on the side of the partition close to the discharge port, and a driving component for driving the scraper to slide is provided in the sedimentation tank.

[0026] By adopting the above technical solution, when cleaning the sediment in the sedimentation tank, the drive component drives the scraper to slide towards the discharge port, thereby pushing the sediment in the sedimentation tank out of the discharge port, which facilitates the cleaning of the sediment.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When thicker paper needs to be produced, the drive assembly drives multiple pulp outlet pipes to slide circumferentially along the pulp distribution box, and keeps the movement speed of the pulp outlet pipes consistent with the movement speed of the forming wire. This allows the same pulp outlet pipe to continuously spray pulp onto the same position on the forming wire, increasing the thickness of the pulp evenly distributed on the forming wire. The multiple pulp outlet pipes also ensure that the paper formed on the forming wire is continuous. When the pulp outlet pipes move to the sides or top of the pulp distribution box, the first sealing assembly closes the pulp outlet, ensuring that the thickness of the paper formed on the forming wire is uniform. This allows the paper machine to adapt to the production of thicker paper.

[0029] 2. The pulp dripping from the forming wire is guided by the water guide plate to the sedimentation tank for sedimentation, then filtered by the water filter, and then collected in the water storage tank through the water inlet. It is then transported to the mixing tank for reuse through the water conveying assembly, which greatly improves the water utilization rate.

[0030] 3. The pulp raw material settled in the sedimentation tank enters the bottom of the partition through the discharge port on the partition plate. When the pulp settles to a certain extent, the discharge port is sealed by the second sealing component and the third sealing component is opened, so that the sediment in the sedimentation tank can be discharged from the discharge port, thus cleaning the sediment in the sedimentation tank. Moreover, during the cleaning of the sedimentation tank, it is not necessary to stop the machine and drain the water in the sedimentation tank, further improving the construction efficiency. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0032] Figure 2 This is a partial structural schematic diagram of an embodiment of this application, mainly used to illustrate the structural schematic diagram of the slurry separator;

[0033] Figure 3 This is a partial structural schematic diagram of an embodiment of this application, mainly used to illustrate the structural schematic diagram of the slurry pipe;

[0034] Figure 4 This is a partial structural schematic diagram of an embodiment of this application, mainly used to illustrate the structural schematic diagram of the mixing tank;

[0035] Figure 5 This is a partial structural cross-sectional view of an embodiment of this application, mainly used to illustrate the connection relationship between the sedimentation tank and the water storage tank;

[0036] Figure 6 This is a partial structural schematic diagram of an embodiment of this application, mainly used to illustrate the structural schematic diagram of the filter plate;

[0037] Figure 7 yes Figure 6 Enlarged view of section A;

[0038] Figure 8 This is a partial structural cross-sectional view of an embodiment of this application, mainly used to illustrate the structural schematic diagram of a sedimentation tank.

[0039] Explanation of reference numerals in the attached drawings: 1. Paper machine body; 11. Headbox; 12. Dividing box; 121. Mounting frame; 122. Slurry outlet pipe; 1221. Slurry outlet; 1222. Sealing groove; 123. Connecting pipe; 1231. Diverting pipe; 13. Settling tank; 131. Water inlet; 132. Baffle plate; 1321. Material outlet; 133. Discharge port; 134. Scraper; 135. Drive unit; 14. Water storage tank; 141. Water conveying assembly; 1411. Second water pump; 1412. Second guide pipe; 142. Fourth drive source; 15. Mixing tank; 151. Support frame; 152. Mounting plate; 153. Third drive source; 16. Water guide plate; 2. Mixing assembly; 21. Mixing paddle; 22. Second drive source; 3. Slurry feeding assembly; 31. First water pump; 3 2. First guide pipe; 4. Drive assembly; 41. First transmission rod; 42. Second transmission rod; 43. First sprocket; 44. Second sprocket; 45. Third sprocket; 46. Fourth sprocket; 47. First chain; 48. Second chain; 49. Drive motor; 5. First sealing assembly; 51. Sealing plate; 511. Rack; 52. First drive source; 521. Gear; 6. Filter plate; 61. Placement groove; 62. Filter cotton; 63. Fixing assembly; 631. Cover plate; 6311. Slot; 632. Insert block; 6321. Pulley block; 64. Receiving groove; 65. Limiting groove; 66. Long strip groove; 67. Compression spring; 7. Second sealing assembly; 71. First baffle; 72. First cylinder; 8. Third sealing assembly; 81. Second baffle; 82. Second cylinder. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0041] This application discloses a paper machine spraying system. (Refer to...) Figure 1 The paper machine includes a paper machine body 1 and a headbox 11, a separating box 12, a settling tank 13, a water storage tank 14, and a mixing tank 15, which are fixedly installed on the paper machine body 1. The bottom wall of the mixing tank 15 is connected to a guide pipe, and the end of the guide pipe away from the mixing tank 15 extends into the interior of the headbox 11. A valve is installed on the guide pipe. A stirring assembly 2 for stirring the pulp raw materials is installed inside the mixing tank 15. A feeding assembly 3 for conveying the pulp in the headbox 11 to the separating box 12 is installed on the headbox 11. A water guide plate 16 is fixedly installed on the frame. The water guide plate 16 is inclined and is used to guide the pulp dripping from the forming wire into the settling tank 13.

[0042] Reference Figure 1The slurry delivery assembly 3 includes a first water pump 31 and a first guide pipe 32. The first water pump 31 is fixedly installed on the top wall of the headbox 11. The inlet end of the first water pump 31 is connected to a first inlet pipe, which extends into the headbox 11. The outlet end of the first water pump 31 is connected to the first guide pipe 32. The end of the first guide pipe 32 away from the first water pump 31 is connected to the slurry distribution box 12.

[0043] Reference Figure 1 , 2 A mounting frame 121 is fixedly installed on the slurry distribution box 12. Multiple slurry outlet pipes 122 are slidably installed on the mounting frame 121. The length directions of the multiple slurry outlet pipes 122 are parallel, and the multiple slurry outlet pipes 122 are distributed around the outside of the slurry distribution box 12. The slurry outlet pipes 122 bypass the top, bottom wall and side walls of the slurry distribution box 12. A drive assembly 4 for driving the multiple slurry outlet pipes 122 to slide is provided on the mounting frame 121.

[0044] Reference Figure 2 , 3 The side wall of the slurry distribution tank 12 is connected to a connecting pipe 123. The connecting pipe 123 is rotatably mounted on the slurry distribution tank. The rotation axis of the connecting pipe 123 is parallel to the length direction of the slurry outlet pipe 122. Multiple diversion pipes 1231 are connected to the connecting pipe 123. The diversion pipes 1231 are flexible tubes, and each diversion pipe 1231 is connected to a slurry outlet pipe 122. Each slurry outlet pipe 122 has an outlet 1221 that communicates with the inside of the slurry outlet pipe 122 along the length direction of the slurry outlet pipe 122.

[0045] Reference Figure 3 Each slurry outlet pipe 122 is provided with a first sealing assembly 5 for sealing the slurry outlet 1221. The first sealing assembly 5 includes a sealing plate 51 and a first driving source 52. The sealing plate 51 has an arc-shaped cross-section. The side wall of the slurry outlet 1221 is provided with a sealing groove 1222 communicating with the slurry outlet 1221 along the circumference of the slurry outlet pipe 122. The sealing plate 51 is rotatably disposed in the sealing groove 1222. The side wall of the sealing groove 1222 is provided with a sealing groove 1222 communicating with the slurry outlet 122 along the axial direction of the slurry outlet pipe 122. The sealing plate 51 has a connected arc-shaped groove. A rack 511 is fixedly installed on the side wall of the sealing plate 51. The rack 511 is arc-shaped and is rotatably installed in the arc-shaped groove. The first drive source 52 includes a first motor. The first motor is fixedly installed on the side wall of the slurry outlet pipe 122. A gear 521 is coaxially fixedly installed on the output shaft of the first motor. A connecting groove communicating with the arc-shaped groove is opened on the side wall of the slurry outlet pipe 122. One end of the gear 521 is rotatably installed in the connecting groove and meshes with the rack 511.

[0046] Reference Figure 2The drive assembly 4 includes a first transmission rod 41, a second transmission rod 42, a first sprocket 43, a second sprocket 44, a third sprocket 45, a fourth sprocket 46, a first chain 47, a second chain 48, and a drive motor 49. The first transmission rod 41 and the second transmission rod 42 are rotatably mounted on both sides of the slurry box 12, and the length directions of the first transmission rod 41 and the second transmission rod 42 are parallel to the slurry outlet pipe 122. The first sprocket 43 and the second sprocket 44 are coaxially fixed at both ends of the first transmission rod 41. The third sprocket 45... 5. The first sprocket 43 and the third sprocket 45 are coaxially fixed at both ends of the second transmission rod 42. The first sprocket 43 and the third sprocket 45 are located on the same side. The second sprocket 44 and the fourth sprocket 46 are located on the same side. The first chain 47 is wound around the first sprocket 43 and the third sprocket 45. The second chain 48 is wound around the second sprocket 44 and the fourth sprocket 46. The slurry pipe 122 is fixedly mounted on both chains. The drive motor 49 is fixedly mounted on the mounting bracket 121. The output shaft of the drive motor 49 is coaxially fixedly connected to the first transmission rod 41.

[0047] Reference Figure 4 A support frame 151 is fixedly installed on the mixing tank 15, and an mounting plate 152 is rotatably installed on the support. The rotation axis of the mounting plate 152 coincides with the central axis of the mixing tank 15. The mixing assembly 2 includes a mixing paddle 21 and a second drive source 22. The mixing paddle 21 is rotatably installed on the mounting plate 152 and is located inside the mixing tank 15. The rotation axis of the mixing paddle 21 is eccentrically set with the rotation axis of the mounting plate 152. The second drive source 22 includes a second motor, which is fixedly installed on the mounting plate 152. The output shaft of the second motor is fixedly connected to the mixing paddle 21.

[0048] Reference Figure 4 The mixing tank 15 is provided with a third drive source 153 for driving the mounting plate 152 to rotate. The third drive source 153 includes a third motor, which is fixedly mounted on the support frame 151. The output shaft of the third motor is fixedly connected to the mounting plate 152.

[0049] Reference Figure 5 The water storage tank 14 is fixedly installed on one side of the sedimentation tank 13. The sedimentation tank 13 has a water inlet 131 that communicates with the inside of the water storage tank 14 on the side wall near the water storage tank 14. A filter element for filtering pulp is provided at the water inlet 131.

[0050] Reference Figure 5The water storage tank 14 is provided with a water conveying assembly 141 for conveying water in the water storage tank 14 to the mixing tank 15. The water conveying assembly 141 includes a second water pump 1411 and a second guide pipe 1412. The second water pump 1411 is fixedly installed on the water storage tank 14. The inlet end of the second water pump 1411 is connected to a second water inlet pipe, which extends into the water storage tank 14. The outlet end of the second water pump 1411 is connected to the second guide pipe 1412. The end of the second guide pipe 1412 away from the second water pump 1411 extends into the mixing tank 15.

[0051] Reference Figure 5 , 6 The top wall of the sedimentation tank 13 has a vertically oriented mounting groove that communicates with the water inlet 131. A filter plate 6 is rotatably installed in the mounting groove. The filter plate 6 is disc-shaped, and the rotation axis of the filter plate 6 coincides with the central axis of the filter plate 6. A fourth drive source 142 for driving the filter plate 6 to rotate is provided on the water storage tank 14. The fourth drive source 142 includes a fourth motor, which is fixedly installed in the water storage tank 14. The output shaft of the fourth motor extends into the mounting groove and is fixedly connected to the filter plate 6.

[0052] Reference Figure 6 Two placement slots 61 are provided on the filter plate 6 near the water storage tank 14 along the direction perpendicular to the filter plate 6. The two placement slots 61 are symmetrically arranged on the filter plate 6 along the central axis of the filter plate 6, and the placement slots 61 are used to connect to the water inlet 131. The filter element includes filter cotton 62, which is adapted to the placement slots 61. Several first through holes are provided on the bottom wall of the placement slots 61. The filter plate 6 is provided with a fixing component 63 to prevent the filter cotton 62 from falling out of the placement slots 61. The fixing component 63 includes a cover plate 631 and a fixing member. Two receiving slots 64 are provided on the filter plate 6. Each receiving slot 64 is connected to a placement slot 61. The cover plate 631 is adapted to the receiving slots 64. Several second through holes are provided on the cover plate 631.

[0053] Reference Figure 6 , 7 The fixing component includes an insert block 632. Each receiving groove 64 has a limiting groove 65 communicating with the receiving groove 64 along the direction parallel to the filter plate 6. An insert block 632 is slidably disposed in both limiting grooves 65. A lever block 6321 is fixedly disposed on the side wall of the insert block 632. The side wall of the filter plate 6 has an elongated groove 66 communicating with the limiting groove 65 along the sliding direction of the insert block 632. The lever block 6321 is slidably disposed in the elongated groove 66. A compression spring 67 is disposed in the limiting groove 65. One end of the compression spring 67 is fixedly connected to the bottom wall of the limiting groove 65, and the other end of the compression spring 67 is fixedly connected to the insert block 632. A slot 6311 for inserting the insert block 632 is provided on the side wall of the cover plate 631.

[0054] Reference Figure 1 A partition 132 is fixedly installed inside the sedimentation tank 13. The partition 132 is horizontally positioned and has a discharge port 1321. A discharge port 133 is provided on the side wall of the sedimentation tank 13, and the discharge port 133 is located on the side of the partition 132 near the bottom wall of the sedimentation tank 13. A second sealing component 7 is provided on the partition 132 to close the discharge port 1321, and a third sealing component 8 is provided on the sedimentation tank 13 to close the discharge port 133. The pulp raw material that settles in the sedimentation tank 13 enters the bottom of the partition through the discharge port 1321 on the partition 132. When the pulp settles to a certain extent, the discharge port 1321 is closed by the second sealing component 7, and the third sealing component 8 is opened, so that the sediment in the sedimentation tank 13 can be discharged from the discharge port 133, thereby cleaning the sediment in the sedimentation tank 13. Furthermore, during the cleaning of the sedimentation tank 13, it is not necessary to stop the machine and drain the water in the sedimentation tank 13, further improving the construction efficiency.

[0055] Reference Figure 1 A scraper 134 is slidably installed inside the sedimentation tank 13. The scraper 134 is located on the side of the partition 132 near the discharge port 133. The scraper 134 is parallel to the side wall of the sedimentation tank 13 where the discharge port 133 is located, and the sliding direction of the scraper 134 is perpendicular to the side wall of the sedimentation tank 13 where the discharge port 133 is located. A driving component 135 for driving the scraper 134 to slide is provided inside the sedimentation tank 13. The driving component 135 includes two rodless cylinders. Two worm gear cylinders are fixedly installed on both sides of the sedimentation tank 13, and the length direction of the two rodless cylinders is perpendicular to the scraper 134. The pistons of the two rodless cylinders are fixedly connected to the scraper 134. When cleaning the sediment in the sedimentation tank 13, the scraper 134 is driven to slide towards the discharge port 133 by the two rodless cylinders, thereby pushing the sediment in the sedimentation tank 13 out of the discharge port 133, which facilitates the cleaning of the sediment.

[0056] Reference Figure 1 The second sealing assembly 7 includes a first baffle 71 and a first cylinder 72. The side wall of the discharge port 1321 is provided with a first sliding groove communicating with the discharge port 1321 along the direction parallel to the partition 132. The first baffle 71 is slidably disposed in the first sliding groove. The first cylinder 72 is embedded in the partition 132, and the piston rod of the first cylinder 72 is fixedly connected to the first baffle 71.

[0057] Reference Figure 1 The third sealing assembly 8 includes a second baffle 81 and a second cylinder 82. The side wall of the discharge port 133 is provided with a second sliding groove communicating with the discharge port 133 in the vertical direction. The second baffle 81 is slidably disposed in the second sliding groove. The second cylinder 82 is fixedly disposed on the side wall of the sedimentation tank 13. The piston rod of the second cylinder 82 is fixedly connected to the second baffle 81.

[0058] The implementation principle of a paper machine spraying system according to an embodiment of this application is as follows: the pulp in the headbox 11 of the first pump 31 is transported to the distribution box 12 through the first guide pipe 32. The pulp entering the distribution box 12 is introduced into each distribution pipe 1231 through the connecting pipe 123, and sprayed onto the forming wire through the pulp outlet 1221 on the pulp outlet pipe 122. When it is necessary to produce thicker paper, the drive motor 49 drives multiple pulp outlet pipes 122 to slide around the distribution box 12, and makes the movement speed of the pulp outlet pipes 122 consistent with the movement speed of the forming wire, so that the same pulp outlet pipe 122 continuously sprays pulp to the same position of the forming wire, thereby increasing the thickness of the pulp evenly distributed on the forming wire, and the paper formed on the forming wire is continuous through multiple pulp outlet pipes 122.

[0059] When the pulp outlet pipe 122 moves to the sides or top of the pulp distribution box 12, the sealing plate 51 is driven to rotate by the first motor, so that the sealing plate 51 is screwed into the pulp outlet 1221 to seal the pulp outlet 1221, so that the paper formed on the forming wire has a uniform thickness, thus enabling the paper machine to adapt to the production of thicker paper.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A paper machine headstock system, comprising a paper machine body (1) and a headbox (11) fixedly mounted on the paper machine body (1), characterized in that: A pulp distribution box (12) is fixedly installed on the paper machine body (1). A pulp delivery assembly (3) for conveying the pulp in the headbox (11) to the pulp distribution box (12) is installed on the headbox (11). A connecting tube (123) is rotatably connected to the pulp distribution box (12). The connecting tube (123) communicates with the inside of the pulp distribution box (12). The pulp distribution box (12) is provided with a plurality of pulp outlet pipes (122) that slide along the circumference of the pulp distribution box (12). The pulp distribution box (12) is provided with a drive assembly (4) for driving the plurality of pulp outlet pipes (122) to slide. The connecting tube is connected to a plurality of diversion pipes (1231), and each diversion pipe (1231) is connected to a pulp outlet pipe (122). Each pulp outlet pipe (122) is provided with a pulp outlet (1221) along the length direction of the pulp outlet pipe (122). The pulp outlet (1221) is used to spray pulp onto the forming wire. The pulp outlet pipe (122) is provided with a first sealing assembly (5) for sealing the pulp outlet (1221). The drive assembly (4) includes a first drive rod (41), a second drive rod (42), a first sprocket (43), a second sprocket (44), a third sprocket (45), a fourth sprocket (46), a first chain (47), a second chain (48), and a drive motor (49). The first drive rod (41) and the second drive rod (42) are rotatably mounted on both sides of the slurry box (12), and the length directions of the first drive rod (41) and the second drive rod (42) are parallel to the slurry outlet pipe (122). The first sprocket (43) and the second sprocket (44) are coaxially fixed at both ends of the first drive rod (41), and the third sprocket (45) is... 45) and the second sprocket (44) are coaxially fixed at both ends of the second transmission rod (42). The first sprocket (43) and the third sprocket (45) are located on the same side. The second sprocket (44) and the fourth sprocket (46) are located on the same side. The first chain (47) is wound around the first sprocket (43) and the third sprocket (45). The second chain (48) is wound around the second sprocket (44) and the fourth sprocket (46). The slurry pipe (122) is fixedly installed on both chains. The drive motor (49) is fixedly installed on the mounting frame (121). The output shaft of the drive motor (49) is coaxially fixedly connected to the first transmission rod (41). The first sealing assembly (5) includes a sealing plate (51) and a first driving source (52). The side wall of the slurry outlet (1221) is provided with a sealing groove (1222) communicating with the slurry outlet (1221) along the circumference of the slurry outlet pipe (122). The sealing plate (51) is rotatably disposed in the sealing groove (1222). The first driving source (52) is used to drive the sealing plate (51) to rotate.

2. The paper machine spraying system according to claim 1, characterized in that: A mixing tank (15) is fixedly installed on the paper machine body (1). A mixing component (2) for mixing the pulp raw materials is installed inside the mixing tank (15). The mixing tank (15) is connected to a guide pipe, which is connected to the headbox (11). A valve is installed on the guide pipe.

3. The paper machine spraying system according to claim 2, characterized in that: The stirring assembly (2) includes a stirring paddle (21) and a second drive source (22). The stirring paddle (21) is rotatably disposed inside the mixing tank (15), and the second drive source (22) is used to drive the stirring paddle (21) to rotate.

4. The paper machine spraying system according to claim 3, characterized in that: The mixing tank (15) is rotatably equipped with an installation plate (152), the stirring paddle (21) is rotatably mounted on the installation plate (152), and the rotation axis of the stirring paddle (21) is eccentrically set with the rotation axis of the installation plate (152). The mixing tank (15) is equipped with a third drive source (153) for driving the installation plate (152) to rotate.

5. A paper machine spraying system according to claim 2, characterized in that: The paper machine body (1) is fixedly provided with a sedimentation tank (13) and a water guide plate (16). The water guide plate (16) is used to guide the pulp dripping from the forming wire into the sedimentation tank (13). A water storage tank (14) is fixedly provided on the side wall of the sedimentation tank (13). A water inlet (131) communicating with the water storage tank (14) is provided on the sedimentation tank (13). A water filter is provided at the water inlet (131) for filtering the pulp. A water conveying component (141) for conveying the water in the water storage tank (14) to the mixing tank (15) is provided in the water storage tank (14).

6. A paper machine spraying system according to claim 5, characterized in that: The top wall of the sedimentation tank (13) is provided with an installation groove that communicates with the water inlet (131). A filter plate (6) is rotatably installed in the installation groove. At least two placement grooves (61) are provided on the filter plate (6). Several first through holes are provided on the bottom wall of the placement groove (61). The placement groove (61) is used to communicate with the water inlet (131). A fourth driving source (142) for driving the filter plate (6) to rotate is provided on the water storage tank (14). The water filter element includes a water filter cotton (62), and the water filter cotton (62) is placed in each of the placement slots (61). The water filter plate (6) is provided with a fixing component (63) to prevent the water filter cotton (62) from falling out of the placement slot (61).

7. A paper machine spraying system according to claim 6, characterized in that: The fixing component (63) includes a cover plate (631) and a fixing member. The filter plate (6) has at least two receiving grooves (64), each receiving groove (64) is connected to a placement groove (61). The cover plate (631) is adapted to the receiving groove (64). The fixing member is used to fix the cover plate (631) in the receiving groove (64). The cover plate (631) has several second through holes.

8. A paper machine spraying system according to claim 5, characterized in that: A partition (132) is fixedly installed inside the sedimentation tank (13). A discharge port (1321) is opened on the partition (132). A second sealing component (7) for closing the discharge port (1321) is provided on the partition (132). A discharge port (133) is opened on the side wall of the sedimentation tank (13), and the discharge port (133) is opened on the side of the partition (132) near the bottom wall of the sedimentation tank (13). A third sealing component (8) for closing the discharge port (133) is provided on the sedimentation tank (13).

9. A paper machine spraying system according to claim 8, characterized in that: A scraper (134) is slidably arranged in the sedimentation tank (13) along the direction close to or away from the discharge port (133). The scraper (134) is arranged on the side of the partition (132) close to the discharge port (133). A driving component (135) for driving the scraper (134) to slide is provided in the sedimentation tank (13).

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