Paper pulp dehydration device for wallpaper base paper production and process thereof

Abstract

The paper pulp dewatering device comprises a water collecting tank, a filter screen cylinder is rotationally connected to the upper portion of the interior of the water collecting tank through a bearing, a first rotating rod is arranged in the filter screen cylinder, and one end of the first rotating rod penetrates through the filter screen cylinder and is connected with a first motor; an external gear is connected to the outer side of one end, close to the first motor, of the filter screen cylinder, and a second gear is meshed above the external gear; through rotation of the dewatering blades and the filter screen cylinder, the filter screen cylinder and the dewatering blades can be fully cleaned, cleaning dead angles are avoided, the filter screen cylinder and the dewatering blades can be rapidly cleaned, the cleaning effect is improved, the cleaning efficiency is improved, and workers do not need to conduct external auxiliary cleaning; a third motor drives a reciprocating screw rod to rotate, and the reciprocating screw rod rotates to drive a mounting shell and a brush to reciprocate on the outer side of the filter screen cylinder, so that the outer side of the filter screen cylinder can be fully cleaned.

Description

Technical Field

[0001] The present invention belongs to the technical field of wallpaper base paper production, and in particular relates to a pulp dewatering device and a process thereof for wallpaper base paper production. Background Art

[0002] Wallpaper base paper is the basic specialty paper for wallpaper production. It is made from wood pulp and other fibers through a special process. It has high strength, low elasticity and a uniform and smooth surface. It can carry clear patterns and colors. At the same time, it has environmental protection, tear resistance, moisture resistance and other characteristics. It is a key substrate that determines the quality and performance of wallpaper.

[0003] The pulp dewatering device is a key equipment used in the papermaking and related industries to remove excess moisture from pulp and increase pulp concentration. Its core function is to achieve solid-liquid separation through physical methods. The device can significantly improve pulp processing efficiency, reduce energy consumption in subsequent drying processes, and improve paper quality.

[0004] Patent application publication number CN110158347A discloses a pulp dewatering device for producing high-strength wallpaper base paper and a wallpaper base paper manufacturing process thereof. When the spiral pulp dewatering machine is used for a long time and the filter screen is clogged, the filter screen can be cleaned conveniently and efficiently without removing the filter screen, which greatly ensures the dewatering efficiency of the pulp and improves the efficiency of the enterprise's production and processing. Although the device can clean the filter screen through a high-pressure water spray mechanism, in actual use, since the spiral dewatering roller is also provided in the filter cylinder, the spiral dewatering roller will block the inner wall of the filter cylinder, and the nozzle is only provided in four directions on the outside of the filter cylinder. Combining the above two reasons, when the nozzle is used to clean the filter cylinder, there will be a cleaning dead corner. Impurities attached to the lower part of the filter cylinder can be washed down by the water flow, while impurities attached to the upper part of the filter cylinder cannot be impacted by the nozzle and cannot be exposed to the water flow. As a result, the impurities in the filter cylinder cannot be completely cleaned in a short time, and even external auxiliary cleaning by staff is required, resulting in poor cleaning effect and low cleaning efficiency, and additional workload. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the prior art of poor cleaning effect, low cleaning efficiency and additional workload when cleaning the filter cylinder, and to provide a pulp dewatering device and process for wallpaper base paper production.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A pulp dewatering device for wallpaper base paper production includes a water collecting box, a filter cylinder is rotatably connected to the upper part of the water collecting box through a bearing, a first rotating rod is provided in the filter cylinder, one end of the first rotating rod passes through the filter cylinder and is connected to the first motor, an external gear is connected to the outer side of the end of the filter cylinder close to the first motor, a second gear is meshed above the external gear, a third sprocket is connected to the middle part of the second gear close to the first motor, a symmetrically arranged fourth sprocket is provided between the first rotating rod and the third sprocket, a fifth sprocket is provided at a position corresponding to the fourth sprocket below the first rotating rod, and the third sprocket, The second chain is meshed between the fourth sprocket and the fifth sprocket, and the third gear is connected to the middle of the side of the fifth sprocket away from the first motor. The position of the first rotating rod corresponding to the third gear is connected to the fourth gear, and the third gear and the fourth gear are used in conjunction with each other; the middle of the side of the fourth sprocket away from the filter cylinder is rotatably connected to a moving block, and the middle of the moving block is threadedly connected to a bidirectional screw rod, and one end of the bidirectional screw rod is connected to the second motor; the middle of the side of the fifth sprocket away from the filter cylinder is rotatably connected to a slider through a bearing, and a sleeve is slidably connected to the bottom of the slider, and a first spring is connected between the slider and the sleeve.

[0007] Preferably, the end of the first rotating rod away from the first motor passes through the filter cylinder and is connected to the support frame fixed to the water collecting tank through a bearing. The first rotating rod and the filter cylinder are arranged concentrically, and a dehydration blade is connected to the outside of the first rotating rod.

[0008] Preferably, a feed hopper is connected above one end of the water collecting tank, a second rotating rod is rotatably connected inside the feed hopper, a plurality of evenly arranged discharge blades are connected to the outside of the second rotating rod, the end of the second rotating rod close to the first motor passes through the feed hopper and is connected to the first sprocket, a second sprocket is connected to the position of the first sprocket corresponding to the outside of the first rotating rod, and a first chain is meshed between the first sprocket and the second sprocket.

[0009] Preferably, a mounting shell is provided on the outside of the filter cylinder, a reciprocating screw is threadedly connected to the top of the mounting shell, one end of the reciprocating screw is rotatably connected to the feed hopper, the other end of the reciprocating screw is connected to the third motor, the third motor is connected to the water collecting tank, a limit rod is slidably connected to the bottom of the mounting shell, the limit rod is connected to the water collecting tank, and two semicircular brush plates are provided in the mounting shell.

[0010] Preferably, both ends of one of the brush plates are connected to a first plug-in block, and both ends of the other brush plate are provided with a first slot corresponding to the position of the first plug-in block, the first plug-in block is inserted into the first slot, and the upper outer side of the brush plate is connected to a positioning block, and the mounting shell is provided with symmetrically arranged positioning grooves at the position corresponding to the positioning block, and the positioning block is inserted into the positioning groove.

[0011] Preferably, an outer shell is connected to the position of one of the brush plates on the outside of the mounting shell, a second plug-in block is slidably connected inside the shell, a second slot is opened between the mounting shell and the position of the second plug-in block corresponding to one of the brush plates, the second plug-in block is inserted into the second slot, a second spring is connected between the second plug-in block and the outer shell, a pull rod is connected to the side of the second plug-in block away from the brush plate, the pull rod is located in the second spring, and the end of the pull rod away from the second plug-in block passes through the outer shell and is connected to the pull ring.

[0012] Preferably, a first chamfer is provided at a position of the second plug-in block corresponding to one of the brush plates, and a second chamfer is provided at a position of one of the brush plates corresponding to the first chamfer, and the first chamfer and the second chamfer are used in conjunction with each other.

[0013] Preferably, a symmetrically arranged water collecting pipe is connected to the position above the water collecting tank corresponding to the filter cylinder, a plurality of evenly arranged nozzles are connected to the position of the water collecting pipe close to the filter cylinder, connecting pipes are connected between the water collecting pipes, a water pump is connected to the position corresponding to one of the water collecting pipes on the side of the water collecting tank close to the first motor, a water supply pipe is connected between one of the water collecting pipes and the water pump, and a water pump is connected between the water pump and the water collecting tank.

[0014] Preferably, a V-shaped filter plate is connected to the lower part of the water collecting box corresponding to the filter cylinder, and a symmetrically arranged discharge port is opened at the position on the upper surface of the filter plate of the water collecting box. A symmetrically arranged collection box is connected to the position on the outside of the water collecting box corresponding to the discharge port, and a drain port is opened at the position of the water collecting box corresponding to the collection box.

[0015] The present invention also provides a pulp dewatering process for wallpaper base paper production, comprising the following steps: S1: Start the first motor, which drives the first rotating rod and the dewatering blades to rotate, and adds the pulp into the feed hopper. During the rotation of the first rotating rod, the first rotating rod cooperates with the first sprocket, the second sprocket and the first chain to make the second rotating rod rotate synchronously. The rotation of the second rotating rod drives the discharge blades to rotate, so that the pulp can evenly enter the filter cylinder.

[0016] S2: Start the second motor, and the second motor drives the bidirectional screw to rotate. During the rotation process, the bidirectional screw drives the two moving blocks to move away from each other. The movement of the two moving blocks drives the two fourth sprockets to move. The second chain drives the fifth sprocket, the third gear and the slider to rise vertically. After the third gear rises, it meshes with the fourth gear. After the slider rises, it pulls the first spring to extend the first spring.

[0017] S3: Start the water pump. The water pump draws the water at the bottom of the water collecting tank into the two water collecting pipes through the cooperation of the water pump pipe, the input pipe and the connecting pipe, and then sprays the water to the filter cylinder through the nozzle to clean the filter cylinder.

[0018] S4: Start the first motor, the first motor drives the first rotating rod, the dehydration blades and the fourth gear to rotate, the rotation of the fourth gear drives the third gear and the fifth sprocket to rotate, the fifth sprocket cooperates with the fourth sprocket, the third sprocket and the second chain to make the second gear rotate synchronously, the rotation of the second gear drives the external gear and the filter drum to rotate, and the dehydration blades and the filter drum rotate, so that the filter drum and the dehydration blades can be fully cleaned.

[0019] S5: Start the third motor, the third motor drives the reciprocating screw to rotate, and the rotation of the reciprocating screw drives the mounting shell and the brush to reciprocate on the outside of the filter cylinder, so that the outside of the filter cylinder can be fully cleaned.

[0020] S6: The water generated by pulp dehydration and cleaning the filter cylinder will fall to the bottom of the water collection box, and the impurities will remain on the top of the filter plate. The water will fall to the bottom of the water collection box through the filter holes of the filter plate. Because the filter plate is V-shaped, the impurities are discharged from the discharge port under the action of the water flow and fall into the collection box, so that the impurities are collected. The water entering the collection box will enter the water collection box again through the drain port.

[0021] Beneficial effects of the present invention: 1) Start the second motor, which drives the bidirectional screw to rotate, so that the two moving blocks move away from each other. The movement of the two moving blocks drives the two fourth sprockets to move, so that the second chain drives the fifth sprocket, the third gear and the slider to rise vertically. After the third gear rises, it meshes with the fourth gear. After the slider rises, it pulls the first spring to extend the first spring; after the third gear meshes with the fourth gear, the water pump, the first motor and the third motor are started. The water pump draws water from the bottom of the water collecting tank into the two water collecting pipes through the cooperation of the water pump pipe, the input pipe and the connecting pipe, and then sprays water to the filter drum through the nozzle to clean the filter drum; the first motor drives the first rotating rod, the dehydrating blades and the fourth gear to rotate The fourth gear rotates to drive the third gear and the fifth sprocket to rotate. The fifth sprocket cooperates with the fourth sprocket, the third sprocket and the second chain to make the second gear rotate synchronously. The rotation of the second gear drives the external gear and the filter drum to rotate. The dehydration blades and the filter drum rotate, so that the filter drum and the dehydration blades can be fully cleaned without cleaning dead corners. The filter drum and the dehydration blades can be cleaned quickly, the cleaning effect is improved, the cleaning efficiency is improved, and no external auxiliary cleaning is required by the staff; the third motor drives the reciprocating screw to rotate, and the reciprocating screw rotation drives the mounting shell and the brush to reciprocate on the outside of the filter drum, so that the outside of the filter drum can be fully cleaned.

[0022] 2) The water generated by pulp dehydration and cleaning the filter cylinder will fall to the bottom of the water collection box, and the impurities will remain above the filter plate. The water will fall to the bottom of the water collection box through the filter holes of the filter plate. Because the filter plate is V-shaped, the impurities are discharged from the discharge port under the action of the water flow and fall into the collection box, so that the impurities can be collected and easily cleaned up later. The water entering the collection box will enter the water collection box again through the drain port, so that the water can be reused and water resources can be saved; 3) When the brush plate needs to be replaced, the staff pulls the pull ring and pulls the second plug out of the second slot with the cooperation of the pull rod. After the second plug is moved out of the second slot, the brush plate loses its fixation and is taken out of the mounting shell. After taking it out, pull the two brush plates to move the first plug out of the first slot, thereby separating the two brush plates. The two brush plates can be taken out from the outside of the filter cylinder and replaced with two new brush plates. The first plug is inserted into the first slot. After the first plug is inserted into the first slot, the two brush plates are connected. The positioning block is aligned with the positioning groove and placed into the mounting shell. During the placement process, one of the brush plates contacts the second plug. Under the cooperation of the first chamfer and the second chamfer, one of the brush plates squeezes the second plug into the outer shell. After the brush plate is completely entered into the mounting shell, the second slot corresponds to the second plug. Under the action of the second spring restoring force, the second plug is reset and inserted into the second slot, thereby fixing the brush plate. It is more convenient to install and remove the brush plates and can improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a perspective view of the present invention; Figure 2 It is a perspective view of the other side of the present invention; Figure 3 It is a cross-sectional view of the filter cylinder in the present invention; Figure 4 yes Figure 3 A partial enlarged view of point A in the middle; Figure 5 It is a three-dimensional diagram of the external gear in the present invention; Figure 6 It is a front view of the external gear in the present invention; Figure 7 is a cross-sectional view of the outer shell of the present invention; Figure 8 yes Figure 7 A partial enlarged view of point B in the middle; Figure 9 It is an exploded view of the installation shell in the present invention; Figure 10 is a perspective view of the mounting housing of the present invention; Figure 11It is a three-dimensional diagram of the brush plate of the present invention.

[0025] In the figure: 1. Water collecting tank; 2. Filter cylinder; 3. Second rotating rod; 4. External gear; 5. Moving block; 6. Slider; 7. Mounting shell; 8. Water collecting pipe; 9. Filter plate; 21. Feed hopper; 22. First rotating rod; 23. Dehydration blades; 24. First motor; 25. Support frame; 31. Blanking blade; 32. First sprocket; 33. Second sprocket; 34. First chain; 41. Second gear; 42. Third sprocket; 43. Fourth sprocket; 44. Fifth sprocket; 45. Second chain; 46. Third gear; 47. Fourth gear; 51. Bidirectional screw rod; 52. Second motor; 53. Support plate; 54. Mounting plate; 61. Housing; 62. First spring; 63. Mounting bracket; 71. Reciprocating screw; 72. Third motor; 73. Limit rod; 701. Brush plate; 702. First insert; 703. First slot; 704. Positioning block; 705. Positioning slot; 7011. Housing; 7012. Second insert; 7013. Second slot; 7014. Second spring; 7015. Pull rod; 7016. Pull ring; 7017. First chamfer; 7018. Second chamfer. 81. Connecting pipe; 82. Water pipe; 83. Water pump; 84. Water pipe; 85. Sprinkler; 91. Discharge port; 92. Collection box; 93. Drainage port. DETAILED DESCRIPTION

[0026] The following will be combined with 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.

[0027] See also Figure 1-Figure 3 As shown, a pulp dewatering device for wallpaper base paper production includes a water collecting tank 1, which is used to collect water generated after pulp dehydration and water generated by cleaning the filter cylinder 2.

[0028] A filter drum 2 is rotatably connected to the upper part of the water collecting box 1 through a bearing. The filter drum 2 is used to assist in dewatering the pulp.

[0029] A feed hopper 21 is connected above one end of the water collecting tank 1 , and the feed hopper 21 is used to add pulp into the filter cylinder 2 .

[0030] A first rotating rod 22 is provided in the filter cylinder 2 and is arranged concentrically with the filter cylinder 2. A dehydrating blade 23 is connected to the outer side of the first rotating rod 22. The dehydrating blade 23 cooperates with the filter cylinder 2 to dehydrate the pulp.

[0031] One end of the first rotating rod 22 passes through the filter drum 2 and is connected to the first motor 24 . The first motor 24 is used to drive the first rotating rod 22 to rotate.

[0032] One end of the first rotating rod 22 away from the first motor 24 passes through the filter screen cylinder 2 and is connected to a support frame 25 fixed to the water collecting tank 1 through a bearing. The support frame 25 is used to support the first rotating rod 22 and fix the position of the first rotating rod 22.

[0033] A second rotating rod 3 is rotatably connected to the feed hopper 21 , and a plurality of evenly arranged discharge blades 31 are connected to the outside of the second rotating rod 3 . The discharge blades 31 are used to evenly drop the pulp to prevent the pulp from being blocked in the filter drum 2 .

[0034] One end of the second rotating rod 3 close to the first motor 24 passes through the feed hopper 21 and is connected to the first sprocket 32. A second sprocket 33 is connected to the outer side of the first rotating rod 22 at a position corresponding to the first sprocket 32. A first chain 34 is engaged between the first sprocket 32 ​​and the second sprocket 33. Through the cooperation of the first sprocket 32, the second sprocket 33 and the first chain 34, the first rotating rod 22 and the second rotating rod 3 can rotate synchronously.

[0035] See also Figure 4-Figure 6 As shown, an external gear 4 is connected to the outer side of one end of the filter drum 2 close to the first motor 24, and a second gear 41 is engaged above the external gear 4. The second gear 41 is used to drive the external gear 4 to rotate, thereby allowing the filter drum 2 to rotate.

[0036] One end of the second gear 41 close to the water collecting tank 1 is connected to the water collecting tank 1 through a bearing.

[0037] The third sprocket 42 is connected to the middle part of the second gear 41 near the first motor 24, and a symmetrically arranged fourth sprocket 43 is provided between the first rotating rod 22 and the third sprocket 42. A fifth sprocket 44 is provided at a position corresponding to the fourth sprocket 43 below the first rotating rod 22. A second chain 45 is meshed between the third sprocket 42, the fourth sprocket 43 and the fifth sprocket 44. A third gear 46 is connected to the middle part of the side of the fifth sprocket 44 away from the first motor 24, and a fourth gear 47 is connected to the position of the first rotating rod 22 corresponding to the third gear 46. The third gear 46 and the fourth gear 47 are used in conjunction with each other, and the fourth gear 47 rises and meshes with the third gear 46. Under the cooperation of the third gear 46 and the fourth gear 47, the fifth sprocket 44 rotates, and under the cooperation of the second chain 45, the fifth sprocket 44, the fourth sprocket 43 and the third sprocket 42 rotate synchronously, so that the second gear 41 drives the external gear 4 to rotate.

[0038] The middle part of the fourth sprocket 43 away from the filter cylinder 2 is rotatably connected to the moving block 5, and the middle part of the moving block 5 is threadedly connected to a bidirectional screw rod 51, which is used to drive the two moving blocks 5 to move closer to or away from each other.

[0039] One end of the bidirectional screw rod 51 is connected to a second motor 52 , and the second motor 52 is used to drive the bidirectional screw rod 51 to rotate.

[0040] A mounting plate 54 is connected to the position of the water collecting tank 1 corresponding to the second motor 52 . The second motor 52 is connected to the mounting plate 54 . The mounting plate 54 is used to install and fix the second motor 52 .

[0041] The end of the bidirectional screw rod 51 corresponding to the water collecting tank 1 away from the second motor 52 is connected to a support plate 53, and the end of the bidirectional screw rod 51 away from the second motor 52 is rotatably connected to the support plate 53. The support plate 53 is used to support the bidirectional screw rod 51 and enhance the stability of the bidirectional screw rod 51.

[0042] The middle part of the side of the fifth sprocket 44 away from the filter cylinder 2 is rotatably connected to a slider 6 through a bearing. A sleeve 61 is slidably connected below the slider 6. The sleeve 61 is used to limit the position of the slider 6 so that the slider 6 can only be raised and lowered.

[0043] A first spring 62 is connected between the slider 6 and the housing 61 , and the first spring 62 is used to reset the slider 6 .

[0044] A mounting bracket 63 is connected to the position of the water collecting box 1 corresponding to the casing 61 and the first motor 24 . The casing 61 and the first motor 24 are both connected to the mounting bracket 63 . The mounting bracket 63 is used to support and fix the positions of the casing 61 and the first motor 24 .

[0045] See also Figure 1-Figure 3 As shown, a mounting shell 7 is provided on the outside of the filter cylinder 2 , and the mounting shell 7 is used to mount and fix the brush plate 701 .

[0046] A reciprocating screw rod 71 is threadedly connected above the mounting shell 7, one end of the reciprocating screw rod 71 is rotatably connected to the feed hopper 21, and the other end of the reciprocating screw rod 71 is connected to the third motor 72, and the third motor 72 is connected to the water collecting tank 1. The reciprocating screw rod 71 is used to drive the mounting shell 7 to reciprocate, and the third motor 72 is used to drive the reciprocating screw rod 71 to rotate.

[0047] A limiting rod 73 is slidably connected to the bottom of the installation shell 7. The limiting rod 73 is connected to the water collecting box 1. The limiting rod 73 is used to limit the moving position of the installation shell 7 to prevent the installation shell 7 from deflecting during the movement.

[0048] See also Figures 9-11 As shown, two semicircular brush plates 701 are provided in the mounting shell 7 , and the brush plates 701 are used to clean the filter cylinder 2 .

[0049] Both ends of one of the brush plates 701 are connected to a first plug-in block 702, and both ends of the other brush plate 701 are provided with a first slot 703 corresponding to the position of the first plug-in block 702. The first plug-in block 702 is inserted into the first slot 703. Through the cooperation between the first plug-in block 702 and the first slot 703, the two brush plates 701 can be initially connected and fixed together.

[0050] The upper outer side of the brush plate 701 is connected to a positioning block 704, and the mounting shell 7 is provided with symmetrically arranged positioning grooves 705 at the position corresponding to the positioning block 704. The positioning block 704 is inserted into the positioning groove 705. The position of the positioning block 704 and the positioning groove 705 can determine the installation position of the brush plate 701, so that the second plug-in block 7012 can correspond to the second slot 7013.

[0051] The outer side of the mounting shell 7 is connected to a position corresponding to one of the brush plates 701, and a second plug-in block 7012 is slidably connected to the inner side of the mounting shell 7. A second slot 7013 is provided at a position of the mounting shell 7 and one of the brush plates 701 corresponding to the second plug-in block 7012. The second plug-in block 7012 is inserted into the second slot 7013. The position of the brush plate 701 can be fixed by the cooperation between the second plug-in block 7012 and the second slot 7013.

[0052] A second spring 7014 is connected between the second plug-in block 7012 and the housing 7011 . The second spring 7014 is used to reset the second plug-in block 7012 .

[0053] A pull rod 7015 is connected to the side of the second plug block 7012 away from the brush plate 701. The pull rod 7015 is located in the second spring 7014. The end of the pull rod 7015 away from the second plug block 7012 passes through the shell 7011 and is connected to the pull ring 7016. The pull ring 7016 cooperates with the pull rod 7015 to move the second plug block 7012 out of the second slot 7013.

[0054] The second plug 7012 is provided with a first chamfer 7017 at a position corresponding to one of the brush plates 701, and a second chamfer 7018 is provided at a position corresponding to the first chamfer 7017 of one of the brush plates 701. The first chamfer 7017 and the second chamfer 7018 are used in conjunction with each other. The cooperation between the first chamfer 7017 and the second chamfer 7018 facilitates squeezing the second plug 7012 into the outer shell 7011.

[0055] See also Figure 1-Figure 3 As shown, a symmetrically arranged water collecting pipe 8 is connected to the position above the water collecting box 1 corresponding to the filter cylinder 2, and the water collecting pipe 8 is used to collect water.

[0056] A plurality of evenly arranged nozzles 85 are connected to the water collecting pipe 8 near the filter cylinder 2 , and the nozzles 85 are used to spray water toward the filter cylinder 2 .

[0057] A connecting pipe 81 is connected between the tops of the water collecting pipes 8 , and the connecting pipe 81 is used to connect the two water collecting pipes 8 .

[0058] A water pump 83 is connected to the position of one of the water collecting pipes 8 on the side of the water collecting tank 1 close to the first motor 24, a water supply pipe 82 is connected between one of the water collecting pipes 8 and the water pump 83, and a water pumping pipe 84 is connected between the water pump 83 and the water collecting tank 1. The water pump 83 cooperates with the water pumping pipe 84 to pump out the water inside the water collecting tank 1, and the water pump 83 cooperates with the water supply pipe 82 to input water into the two water collecting pipes 8.

[0059] See also Figure 1-Figure 3 as well as Figure 7 As shown, a V-shaped filter plate 9 is connected to the lower part of the filter cylinder 2 corresponding to the inside of the water collecting box 1. The filter plate 9 is used to filter water and impurities. The filter plate 9 is set to be V-shaped. Under the action of water flow, the impurities located above the filter plate 9 can be flushed into the collection box 92 for collection.

[0060] A symmetrically arranged discharge port 91 is provided on the water collecting box 1 at a position corresponding to the upper surface of the filter plate 9 , and the discharge port 91 is used to discharge impurities.

[0061] A symmetrically arranged collecting box 92 is connected to the position of the discharge port 91 on the outside of the water collecting box 1 , and the collecting box 92 is used to collect impurities.

[0062] A drain outlet 93 is provided in the water collecting tank 1 at a position corresponding to the collecting box 92 . The drain outlet 93 is used to allow the water entering the water collecting tank 1 to flow back into the water collecting tank 1 .

[0063] It is worth noting that: because the filter drum 2 and the water collecting box 1 are connected by bearings, the friction between the filter drum 2 and the water collecting box 1 is reduced, so that the filter drum 2 can rotate more smoothly. When dewatering the pulp, a fixing mechanism can be used to fix the two ends of the filter drum 2 to prevent the filter drum 2 from rotating during the pulp dewatering process. In this device, a cylinder can be used to cooperate with a splint to clamp the two ends of the filter drum 2. The combination of the cylinder and the splint is a common fixing mechanism and will not be elaborated here. When cleaning the filter drum 2, the splint is moved away from the filter drum 2 by the cylinder, so that the filter drum 2 loses its fixation and the filter drum 2 can be rotated.

[0064] Working principle: When dewatering the pulp, the first motor 24 is started, and the first motor 24 drives the first rotating rod 22 to rotate, and the first rotating rod 22 drives the dewatering blades 23 to rotate. After the dewatering blades 23 rotate, the pulp is added to the feed hopper 21. During the rotation, the first rotating rod 22 cooperates with the first sprocket 32, the second sprocket 33 and the first chain 34 to rotate the second rotating rod 3 synchronously. The rotation of the second rotating rod 3 drives the unloading blades 31 to rotate, so that the pulp can enter the filter cylinder evenly, thereby preventing the pulp from being blocked in the filter cylinder. The pulp entering the filter cylinder cooperates with the dewatering blades 23 to achieve dehydration of the pulp. Water falls into the water collecting tank 1 through the holes in the filter cylinder, and the dehydrated pulp falls out from the end of the filter cylinder away from the first motor 24. When the filter cartridge needs to be cleaned, the second motor 52 is started, and the second motor 52 drives the bidirectional screw rod 51 to rotate. During the rotation process, the bidirectional screw rod 51 drives the two moving blocks 5 to move away from each other. The movement of the two moving blocks 5 drives the two fourth sprockets 43 to move. Because the length of the second chain 45 remains unchanged, and the two fourth sprockets 43 move horizontally to a position away from the third sprocket 42, the second chain 45 drives the fifth sprocket 44, the third gear 46 and the slider 6 to rise vertically. After the third gear 46 rises, it meshes with the fourth gear 47. After the slider 6 rises, it pulls the first spring 62, causing the first spring 62 to stretch. After the third gear 46 is meshed with the fourth gear 47, the water pump 83, the first motor 24 and the third motor 72 are started. The water pump 83 pumps the water at the bottom of the water collecting tank 1 into the two water collecting pipes 8 through the cooperation of the water pumping pipe 84, the input pipe and the connecting pipe 81, and then sprays the water to the filter drum 2 through the nozzle 85 to clean the filter drum 2; the first motor 24 drives the first rotating rod 22, the dehydrating blade 23 and the fourth gear 47 to rotate, and the rotation of the fourth gear 47 drives the third gear 46 and the fifth sprocket 44 to rotate, and the fifth sprocket 44 cooperates with the fourth sprocket 43, the third sprocket 42 and the second chain 45 to make the second The gear 41 rotates synchronously, and the rotation of the second gear 41 drives the external gear 4 and the filter drum 2 to rotate. The dehydration blades 23 and the filter drum 2 rotate, so that the filter drum 2 and the dehydration blades 23 can be fully cleaned without any cleaning dead corners. The filter drum 2 and the dehydration blades 23 can be cleaned quickly, the cleaning effect is improved, the cleaning efficiency is improved, and no external auxiliary cleaning is required by the staff; the third motor 72 drives the reciprocating screw 71 to rotate, and the rotation of the reciprocating screw 71 drives the mounting shell 7 and the brush to reciprocate on the outside of the filter drum 2, so that the outside of the filter drum 2 can be fully cleaned; After the filter drum 2 is cleaned, the second motor 52 is started again, so that the bidirectional screw rod 51 drives the two third sprockets 42 to move closer to each other. Under the action of the restoring force of the first spring 62, the slider 6, the fifth sprocket 44 and the third gear 46 are driven to reset, so that the pulp can be dehydrated again. The water generated by pulp dehydration and cleaning of the filter drum 2 will fall to the bottom of the water collection tank 1, and impurities will remain above the filter plate 9. The water will pass through the filter holes of the filter plate 9 and fall to the bottom of the water collection tank 1. Because the filter plate 9 is V-shaped, the impurities are discharged from the discharge port 91 under the action of the water flow and fall into the collection box 92, so that the impurities can be collected and easily cleaned up later. The water entering the collection box 92 will enter the water collection tank 1 again through the drain port 93, so that the water can be reused and water resources can be saved. When the brush plate 701 needs to be replaced, the staff pulls the pull ring 7016 and pulls the second plug block 7012 out of the second slot 7013 with the cooperation of the pull rod 7015. After the second plug block 7012 is moved out of the second slot 7013, the brush plate 701 loses its fixation and the brush plate 701 is taken out of the mounting shell 7. After taking it out, the two brush plates 701 are pulled to move the first plug block 702 out of the first slot 703, thereby separating the two brush plates 701. The two brush plates 701 can be taken out from the outside of the filter cylinder 2 and replaced with two new brush plates 701. The first plug block 702 is inserted into the first slot 703. After the first plug block 702 is inserted into the first slot 703, the two brush plates 70 1 is connected, and the positioning block 704 is aligned with the positioning groove 705 and placed into the mounting shell 7. During the placement process, one of the brush plates 701 contacts the second plug block 7012. With the cooperation of the first chamfer 7017 and the second chamfer 7018, one of the brush plates 701 squeezes the second plug block 7012 into the housing 7011. After the brush plate 701 is completely inserted into the mounting shell 7, the second slot 7013 corresponds to the second plug block 7012. Under the action of the restoring force of the second spring 7014, the second plug block 7012 is reset and inserted into the second slot 7013, thereby fixing the brush plate 701. This makes installation and removal of the brush plate 701 more convenient and improves efficiency.

[0065] A process for dewatering paper pulp for wallpaper production comprises the following steps: S1: Start the first motor 24, the first motor 24 drives the first rotating rod 22 and the dehydration blade 23 to rotate, and the pulp is added into the feed hopper 21. During the rotation process, the first rotating rod 22 cooperates with the first sprocket 32, the second sprocket 33 and the first chain 34 to make the second rotating rod 3 rotate synchronously. The rotation of the second rotating rod 3 drives the discharge blade 31 to rotate, so that the pulp can evenly enter the filter cylinder.

[0066] S2: Start the second motor 52, the second motor 52 drives the bidirectional screw rod 51 to rotate, and the bidirectional screw rod 51 drives the two moving blocks 5 to move away from each other during the rotation process. The movement of the two moving blocks 5 drives the two fourth sprockets 43 to move, and the second chain 45 drives the fifth sprocket 44, the third gear 46 and the slider 6 to rise vertically. After the third gear 46 rises, it engages with the fourth gear 47. After the slider 6 rises, it will pull the first spring 62 to stretch the first spring 62.

[0067] S3: Start the water pump 83. The water pump 83 pumps the water at the bottom of the water collecting tank 1 into the two water collecting pipes 8 through the cooperation of the water pumping pipe 84, the input pipe and the connecting pipe 81, and then sprays the water to the filter cylinder 2 through the nozzle 85 to clean the filter cylinder 2.

[0068] S4: Start the first motor 24, the first motor 24 drives the first rotating rod 22, the dehydration blades 23 and the fourth gear 47 to rotate, the fourth gear 47 rotates to drive the third gear 46 and the fifth sprocket 44 to rotate, the fifth sprocket 44 cooperates with the fourth sprocket 43, the third sprocket 42 and the second chain 45 to make the second gear 41 rotate synchronously, the second gear 41 rotates to drive the external gear 4 and the filter drum 2 to rotate, and the dehydration blades 23 and the filter drum 2 rotate, so that the filter drum 2 and the dehydration blades 23 can be fully cleaned.

[0069] S5: Start the third motor 72, which drives the reciprocating screw 71 to rotate. The reciprocating screw 71 drives the mounting shell 7 and the brush to reciprocate on the outside of the filter cylinder 2, thereby fully cleaning the outside of the filter cylinder 2.

[0070] S6: The water generated by pulp dehydration and cleaning of the filter drum 2 will fall to the bottom of the water collecting tank 1, and the impurities will remain above the filter plate 9. The water will fall to the bottom of the water collecting tank 1 through the filter holes of the filter plate 9. Because the filter plate 9 is V-shaped, under the action of the water flow, the impurities are discharged from the discharge port 91 and fall into the collection box 92, so that the impurities are collected. The water entering the collection box 92 will enter the water collecting tank 1 again through the drain port 93.

[0071] It should be noted that, in this document, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0072] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A pulp dewatering device for wallpaper base paper production, comprising a water collecting box (1), wherein a filter cylinder (2) is rotatably connected to the upper portion of the water collecting box (1) via a bearing, a first rotating rod (22) is provided in the filter cylinder (2), one end of the first rotating rod (22) passes through the filter cylinder (2) and is connected to a first motor (24), and is characterized in that: The filter cylinder (2) is connected to an external gear (4) on the outer side of one end close to the first motor (24), and a second gear (41) is meshed above the external gear (4). A third sprocket (42) is connected to the middle of the second gear (41) close to the first motor (24). A symmetrically arranged fourth sprocket (43) is provided between the first rotating rod (22) and the third sprocket (42). A fifth sprocket (44) is provided below the first rotating rod (22) at a position corresponding to the fourth sprocket (43). A second chain (45) is meshed between the third sprocket (42), the fourth sprocket (43) and the fifth sprocket (44). A third gear (46) is connected to the middle of the side of the fifth sprocket (44) away from the first motor (24). A fourth gear (47) is connected to the position of the first rotating rod (22) corresponding to the third gear (46). The third gear (46) and the fourth gear (47) are used in conjunction with each other. The middle portion of the fourth sprocket (43) away from the filter cylinder (2) is rotatably connected to a moving block (5), the middle portion of the moving block (5) is threadedly connected to a bidirectional screw rod (51), and one end of the bidirectional screw rod (51) is connected to a second motor (52); The middle portion of the side of the fifth sprocket (44) away from the filter cylinder (2) is rotatably connected to a slider (6) via a bearing, a sleeve (61) is slidably connected below the slider (6), and a first spring (62) is connected between the slider (6) and the sleeve (61).

2. The pulp dewatering device for wallpaper base paper production according to claim 1, characterized in that: The end of the first rotating rod (22) away from the first motor (24) passes through the filter cylinder (2) and is connected to a support frame (25) fixed to the water collecting tank (1) through a bearing. The first rotating rod (22) and the filter cylinder (2) are arranged concentrically. The outer side of the first rotating rod (22) is connected to a dehydration blade (23).

3. The pulp dewatering device for wallpaper base paper production according to claim 2, characterized in that: A feed hopper (21) is connected to the top of one end of the water collecting tank (1), a second rotating rod (3) is rotatably connected inside the feed hopper (21), a plurality of evenly arranged discharge blades (31) are connected to the outside of the second rotating rod (3), an end of the second rotating rod (3) close to the first motor (24) passes through the feed hopper (21) and is connected to the first sprocket (32), a second sprocket (33) is connected to the outside of the first rotating rod (22) at a position corresponding to the first sprocket (32), and a first chain (34) is engaged between the first sprocket (32) and the second sprocket (33).

4. The pulp dewatering device for wallpaper base paper production according to claim 3, characterized in that: A mounting shell (7) is provided on the outside of the filter cylinder (2), a reciprocating screw (71) is threadedly connected to the top of the mounting shell (7), one end of the reciprocating screw (71) is rotatably connected to the feed hopper (21), the other end of the reciprocating screw (71) is connected to the third motor (72), the third motor (72) is connected to the water collecting tank (1), a limit rod (73) is slidably connected to the bottom of the mounting shell (7), the limit rod (73) is connected to the water collecting tank (1), and two semicircular brush plates (701) are provided in the mounting shell (7).

5. The pulp dewatering device for wallpaper base paper production according to claim 4, characterized in that: Both ends of one of the brush plates (701) are connected to a first plug block (702), and both ends of the other brush plate (701) are provided with a first slot (703) at positions corresponding to the first plug block (702), and the first plug block (702) is inserted into the first slot (703). The upper outer side of the brush plate (701) is connected to a positioning block (704), and the mounting shell (7) is provided with symmetrically arranged positioning grooves (705) at positions corresponding to the positioning blocks (704), and the positioning blocks (704) are inserted into the positioning grooves (705).

6. The pulp dewatering device for wallpaper base paper production according to claim 5, characterized in that: The outer side of the mounting shell (7) is connected to a position corresponding to one of the brush plates (701), and a second plug-in block (7012) is slidably connected inside the housing (7011). A second slot (7013) is provided between the mounting shell (7) and a position corresponding to the second plug-in block (7012) of one of the brush plates (701). The second plug-in block (7012) is plugged into the second slot (7013). A second spring (7014) is connected between the second plug-in block (7012) and the housing (7011). A pull rod (7015) is connected to a side of the second plug-in block (7012) away from the brush plate (701). The pull rod (7015) is located inside the second spring (7014), and an end of the pull rod (7015) away from the second plug-in block (7012) passes through the housing (7011) and is connected to a pull ring (7016).

7. The pulp dewatering device for wallpaper base paper production according to claim 6, characterized in that: The second plug (7012) is provided with a first chamfer (7017) at a position corresponding to one of the brush plates (701), and a second chamfer (7018) is provided at a position corresponding to the first chamfer (7017) of one of the brush plates (701), and the first chamfer (7017) and the second chamfer (7018) are used in conjunction with each other.

8. The pulp dewatering device for wallpaper base paper production according to claim 7, characterized in that: A symmetrically arranged water collecting pipe (8) is connected to a position above the water collecting tank (1) corresponding to the filter screen cylinder (2); a plurality of evenly arranged nozzles (85) are connected to the water collecting pipe (8) near the filter screen cylinder (2); a connecting pipe (81) is connected between the water collecting pipes (8); a water pump (83) is connected to a position corresponding to one of the water collecting pipes (8) on one side of the water collecting tank (1) near the first motor (24); a water delivery pipe (82) is connected between one of the water collecting pipes (8) and the water pump (83); and a water pump (84) is connected between the water pump (83) and the water collecting tank (1).

9. The pulp dewatering device for wallpaper base paper production according to claim 8, characterized in that: A V-shaped filter plate (9) is connected to the lower portion of the filter screen cylinder (2) inside the water collecting box (1), and a symmetrically arranged discharge port (91) is provided at a position on the upper surface of the filter plate (9) of the water collecting box (1). A symmetrically arranged collection box (92) is connected to a position on the outer side of the water collecting box (1) corresponding to the discharge port (91), and a drain port (93) is provided at a position on the water collecting box (1) corresponding to the collection box (92).

10. A pulp dewatering process for wallpaper base paper production, applicable to the pulp dewatering device for wallpaper base paper production and the process thereof according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: starting the first motor (24), the first motor (24) drives the first rotating rod (22) and the dewatering blade (23) to rotate, and the pulp is added into the feed hopper (21). During the rotation process, the first rotating rod (22) cooperates with the first sprocket (32), the second sprocket (33) and the first chain (34), so that the second rotating rod (3) rotates synchronously. The rotation of the second rotating rod (3) drives the discharge blade (31) to rotate, so that the pulp can be uniformly fed into the filter cylinder; S2: Start the second motor (52), the second motor (52) drives the bidirectional screw (51) to rotate, the bidirectional screw (51) drives the two moving blocks (5) to move away from each other during the rotation process, the two moving blocks (5) move and drive the two fourth sprockets (43) to move, the second chain (45) drives the fifth sprocket (44), the third gear (46) and the slider (6) to rise vertically, the third gear (46) is engaged with the fourth gear (47) after rising, and the slider (6) pulls the first spring (62) after rising, so that the first spring (62) stretches; S3: Start the water pump (83), which pumps the water at the bottom of the water collecting tank (1) into the two water collecting pipes (8) through the cooperation of the water pump pipe (84), the input pipe and the connecting pipe (81), and then sprays the water toward the filter cylinder (2) through the nozzle (85), so that the filter cylinder (2) is cleaned; S4: Start the first motor (24), the first motor (24) drives the first rotating rod (22), the dehydrating blades (23) and the fourth gear (47) to rotate, the fourth gear (47) rotates to drive the third gear (46) and the fifth sprocket (44) to rotate, the fifth sprocket (44) cooperates with the fourth sprocket (43), the third sprocket (42) and the second chain (45) to make the second gear (41) rotate synchronously, the second gear (41) rotates to drive the external gear (4) and the filter drum (2) to rotate, and the filter drum (2) and the dehydrating blades (23) rotate, so that the filter drum (2) and the dehydrating blades (23) can be fully cleaned; S5: starting the third motor (72), the third motor (72) drives the reciprocating screw (71) to rotate, and the reciprocating screw (71) rotates to drive the mounting shell (7) and the brush to reciprocate on the outside of the filter cylinder (2), thereby fully cleaning the outside of the filter cylinder (2); S6: The water generated by pulp dewatering and cleaning the filter cylinder (2) will fall to the bottom of the water collecting tank (1), and the impurities will remain above the filter plate (9). The water will pass through the filter holes of the filter plate (9) and fall to the bottom of the water collecting tank (1). Because the filter plate (9) is V-shaped, under the action of the water flow, the impurities are discharged from the discharge port (91) and fall into the collection box (92), so that the impurities are collected. The water entering the collection box (92) will enter the water collecting tank (1) again through the drain port (93).

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