A pulp filtering and dewatering device

Abstract

The present application relates to a pulp filtering and dewatering device, which includes a housing, a screen, a feed box, a sliding rod, and a brush. The upper end of the housing is provided with a pulp trough. The outer periphery of the screen is connected to the inner periphery of the pulp trough. The screen divides the pulp trough from top to bottom into a pulp chamber and a filtrate chamber. Along the length direction of the housing, the feed box is connected to one end of the housing. The feed box is provided with a guide groove on the end facing the housing. The guide groove is connected to the pulp chamber. The end of the housing away from the feed box is provided with a discharge port and a liquid outlet. The discharge port is connected to the pulp chamber, and the liquid outlet is connected to the filtrate chamber. The opposite inner walls of the filtrate chamber are provided with guide grooves. The length direction of the guide groove is parallel to the screen. The ends of the sliding rod are respectively slidably embedded in the guide grooves. The brush rod is connected to the sliding rod, and the bristles of the brush abut the lower end of the screen. Pulp is filtered through the screen and discharged from the discharge port. The sliding rod slides in the guide groove to control the brush to clean pulp blocked by the screen, thereby improving the working efficiency of the pulp filtering and dewatering device.

Description

Technical Field

[0001] The present application relates to the field of pulp processing, and in particular to a pulp filtering and dewatering device. Background Art

[0002] The pulp filtration and dewatering device is a very important equipment in the manufacture of corrugated paper. The raw paper is beaten into pulp in water and then enters the pulp filtration and dewatering device for dehydration to remove more water.

[0003] The utility model patent with authorization publication number CN205443768U discloses a pulp filtering and dewatering device. The key points of its technical solution are that it includes a pulp trough for pulp flow, a screen is provided in the pulp trough, the screen is parallel to the bottom of the pulp trough, and the pulp trough is divided from top to bottom into a pulp cavity and a water filtration cavity by the screen. The pulp trough is arranged at an angle, and a feed pipe is provided at the higher end of the pulp trough, and an outlet pipe and a pulp pipe are provided at the other end of the pulp trough. A support rod is provided above the pulp cavity, and the two ends of the support rod are distributed and fixedly connected on both sides of the pulp trough. A covering cloth is fixedly connected to the support rod, and the covering cloth is in contact with the pulp trough. A counterweight is provided at the end of the covering cloth away from the support rod, and the counterweight is in contact with the end of the pulp trough away from the feed pipe.

[0004] After the pulp enters the screen, part of the pulp tends to adhere to the screen, which requires workers to frequently stop the device to clean the pulp adhered to the screen, resulting in reduced working efficiency of the pulp filtration and dewatering device. Summary of the Invention

[0005] In order to improve the working efficiency of a pulp filtering and dewatering device, the present application provides a pulp filtering and dewatering device.

[0006] The present application provides a pulp filtration and dewatering device that adopts the following technical solution:

[0007] The drawer is connected to the drawer at one end, and the drawer is connected to the drawer at one end, and the drawer is connected to the drawer at the other end.

[0008] By adopting the above technical solution, the water-containing pulp enters the guide groove from the feed port and flows into the pulp cavity. After being filtered through the screen, the pulp is discharged from the discharge port and the water is discharged from the liquid outlet. In the process of dehydrating the water-containing pulp, the sliding rod slides in the guide groove to control the brush to clean the pulp blocked by the screen. The screen can be cleaned without pausing the operation of the device. The operation is simple, which improves the working efficiency of the pulp filtering and dehydrating device.

[0009] Preferably, it also includes a reciprocating screw rod, both ends of which are rotatably connected to the groove wall of the guide groove, the rotation axis of the reciprocating screw rod is parallel to the length direction of the guide groove, and one end of the sliding rod is provided with a threaded hole, and the reciprocating screw rod passes through the threaded hole and is threadedly connected to the inner wall of the threaded hole.

[0010] By adopting the above technical solution, the reciprocating screw rotates to control the sliding rod to slide back and forth in the guide groove, thereby cleaning the screen. The screen can be cleaned without pausing the operation of the device, thereby improving the working efficiency of the pulp filtering and dewatering device.

[0011] Preferably, it also includes a rotating shaft, an impeller, a first bevel gear and a second bevel gear. The inner wall of the pulp chamber near one end of the feed box is provided with a mounting port, the inner wall of the mounting port is provided with a rotating port, the rotating port extends to connect with the guide groove, the rotating shaft passes through the rotating port and is rotatably connected to the inner wall of the rotating port, the rotating axis of the rotating shaft is perpendicular to the screen, the impeller is arranged in the mounting port and is coaxially fixedly connected to the outer periphery of the rotating shaft, the first bevel gear is arranged in the guide groove and coaxially fixedly connected to the outer periphery of the rotating shaft, the second bevel gear is coaxially fixedly connected to the outer periphery of the reciprocating screw, and the first bevel gear is engaged with the second bevel gear.

[0012] By adopting the above technical solution, the water-containing pulp flows in the pulp chamber and drives the impeller to rotate. The rotation of the impeller causes the first bevel gear to rotate, and the reciprocating screw is driven to rotate through the meshing second bevel gear, so that the sliding rod slides back and forth in the guide groove, thereby realizing the cleaning of the screen. The operation is simple and does not require the use of additional energy, thereby reducing energy loss. As the dewatering device works, the screen can be continuously cleaned, thereby improving the working efficiency of the pulp filtering and dewatering device.

[0013] Preferably, it also includes a connecting rod and a first spring, wherein the sliding rod is provided with a sliding groove at one end facing the screen, one end of the connecting rod is slidably embedded in the sliding groove, and the other end of the connecting rod is connected to the brush rod of the brush, one end of the first spring is connected to the bottom of the sliding groove, and the other end of the first spring is connected to the connecting rod.

[0014] By adopting the above technical solution, the first spring pushes the connecting rod so that the brush continuously abuts against the screen, thereby better cleaning the screen.

[0015] Preferably, it also includes a driving plate and a pushing block, wherein the driving plate is slidably connected to one end of the box body away from the feed box, one end of the pushing block is connected to the end of the driving plate facing the box body, and the other end of the pushing block is used to extend into the discharge port.

[0016] By adopting the above technical solution, the driving plate slides so that the push block continuously extends into the discharge port, reducing the probability of the discharge port being blocked and improving the working efficiency of the pulp filtering and dewatering device.

[0017] Preferably, it also includes a second spring and a guide column, the drive plate is provided with a sliding opening, one end of the guide column is connected to the end of the box body away from the feed box, the other end of the guide column is slidably connected to the inner wall of the sliding opening, the second spring is sleeved on the outer periphery of the guide column, one end of the second spring is connected to the box body, and the other end of the second spring is connected to the drive plate.

[0018] By adopting the above technical solution, the driving plate is pulled in the direction away from the box body to overcome the elastic force of the second spring, and the push block slides out from the discharge port, so that the pulp is discharged from the discharge port. When the blocked discharge port needs to be unblocked, the driving plate is loosened, and the second spring contracts to cause the push block to slide into the discharge port to unblock the discharge port, saving manpower.

[0019] Preferably, it also includes a fixed seat, a drive shaft and a cam, the fixed seat is fixedly connected to one end of the box body away from the feed box, the drive shaft is rotatably connected to the fixed seat, the rotation axis of the drive shaft is perpendicular to the screen, and the cam is fixedly connected to the outer periphery of the drive shaft, and the outer periphery of the cam abuts against one end of the drive plate toward the box body.

[0020] By adopting the above technical solution, the rotation of the cam and the second spring jointly control the driving plate to slide back and forth, so that the push block continuously extends into the discharge port to clear the discharge port, which is easy to operate, saves manpower, and improves the working efficiency of the pulp filtering and dewatering device.

[0021] Preferably, it further comprises a pressing plate, which is slidably connected to the inner wall of the pulp chamber near the discharge port, the sliding direction of the pressing plate being perpendicular to the screen, and the pressing plate is used to squeeze the pulp together with the screen.

[0022] By adopting the above technical solution, the pressing plate and the screen squeeze the pulp together before the pulp is discharged from the discharge port, thereby improving the dewatering efficiency of the pulp.

[0023] Preferably, positioning grooves are provided on opposite inner walls of the pulp chamber along the length direction of the box body, the length direction of the positioning grooves is perpendicular to the screen, and both ends of the pressing plate are slidably embedded in the positioning grooves.

[0024] By adopting the above technical solution, the positioning groove guides the sliding of the pressing plate, so that the pressing plate and the screen remain parallel to each other, making it easier for the pressing plate and the screen to squeeze the pulp together, thereby improving the dewatering efficiency of the pulp.

[0025] Preferably, it also includes a turntable and a connecting rod, the turntable is rotatably connected to the inner wall of the pulp chamber facing the feed box, the rotation axis of the turntable is parallel to the length direction of the box body, one end of the connecting rod is rotatably connected to the outer edge of the turntable, and the other end of the connecting rod is rotatably connected to the end of the pressure plate away from the screen, and the rotation axes of both ends of the connecting rod are parallel to the rotation axis of the turntable.

[0026] By adopting the above technical solution, the rotation of the turntable drives the pressing plate to slide back and forth through the connecting rod, thereby continuously squeezing the pulp together with the screen, thereby improving the dewatering efficiency of the pulp.

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

[0028] 1. The wet pulp enters the guide groove from the feed port and flows into the pulp cavity. After being filtered by the screen, the pulp is discharged from the discharge port and the water is discharged from the liquid outlet. During the dehydration of the wet pulp, the sliding rod slides in the guide groove to control the brush to clean the pulp blocked by the screen. The screen can be cleaned without stopping the device. The operation is simple and improves the working efficiency of the pulp filtration and dehydration device.

[0029] 2. The flow of water-containing pulp in the pulp chamber drives the impeller to rotate. The rotation of the impeller causes the first bevel gear to rotate, and the meshed second bevel gear drives the reciprocating screw to rotate, causing the sliding rod to slide back and forth in the guide groove to clean the screen. The operation is simple and does not require the use of additional energy, reducing energy loss. As the dewatering device works, the screen can be continuously cleaned, thereby improving the working efficiency of the pulp filtration and dewatering device.

[0030] 3. The rotation of the cam and the second spring jointly control the driving plate to slide back and forth, so that the push block continuously extends into the discharge port to dredge the discharge port, which is easy to operate, saves manpower, and improves the working efficiency of the pulp filtering and dewatering device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a pulp filtering and dewatering device.

[0032] Figure 2 It is a schematic diagram of the internal structure of a pulp filtration and dewatering device after being cut open.

[0033] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0034] Figure 4It is a schematic diagram of the internal structure of a pulp filtration and dewatering device after being cut open, mainly used to display the box, screen and cleaning components.

[0035] Figure 5 This is a schematic diagram of the internal structure of a pulp filtration and dewatering device after being cut open, mainly used to show the rotating port, through port and transmission rod.

[0036] Figure 6 It is a schematic diagram of the overall structure of a pulp filtration and dewatering device, mainly used to show the pressing plate, limit rod and turntable.

[0037] Figure 7 It is a schematic diagram of the overall structure of the box body and feed box.

[0038] Figure 8 yes Figure 6 Enlarged view of point B in the middle.

[0039] Explanation of the accompanying symbols: 1. Box body; 11. Pulp tank; 111. Pulp chamber; 1111. Mounting port; 1112. Rotating port; 1113. Positioning slot; 1114. Limiting port; 112. Filtrate chamber; 1121. Guide slot; 1122. Through port; 12. Discharge port; 13. Liquid outlet; 2. Screen; 3. Feed box; 31. Guide slot; 32. Feed port; 4. Bracket; 5. Cleaning assembly; 51. Rotating shaft; 52. Impeller; 53. First bevel gear; 54. Reciprocating screw; 55. Second bevel gear; 56. Sliding rod; 561. Screw port; 562. Sliding slot; 57. Connecting rod; 571. Snap ring ;58. First spring;59. Brush;6. Clearing assembly;61. Fixed seat;611. Fixed port;62. Drive shaft;63. Cam;64. Transmission rod;651. Third bevel gear;652. Fourth bevel gear;66. Guide column;661. Card plate;67. Drive plate;671. Sliding port;68. Second spring;69. Push block;7. Extrusion assembly;71. Press plate;711. Fixed column;72. Limiting rod;73. Turntable;731. Turntable;74. First synchronous wheel;75. Second synchronous wheel;76. Synchronous belt;77. Connecting rod;771. First linkage port;772. Second linkage port. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-8 This application is described in further detail.

[0041] The present application discloses a pulp filtering and dewatering device. Figure 1 A pulp filtering and dewatering device includes a box body 1, a screen 2, a feed box 3, a bracket 4, a cleaning component 5, a dredging component 6 and a squeezing component 7.

[0042] Reference Figure 2The upper end of the box body 1 is provided with a pulp trough 11. The outer periphery of the screen 2 is fixedly connected to the inner periphery of the pulp trough 11. The screen 2 is parallel to the bottom of the pulp trough 11. The screen 2 divides the pulp trough 11 from top to bottom into a pulp chamber 111 and a filtrate chamber 112. Along the length direction of the box body 1, the feed box 3 is fixedly connected to one end of the box body 1. The height of the box body 1 decreases as it moves away from the feed box 3. The height of the screen 2 decreases as it moves away from the feed box 3. Four brackets 4 are provided. Two brackets 4 are fixedly connected to the lower end of the feed box 3. The other two brackets 4 are fixedly connected to the end of the box body 1 away from the feed box 3. The end of the bracket 4 facing away from the feed box 3 and the box body 1 is used to abut the ground.

[0043] The feed box 3 is provided with a guide groove 31 at one end facing the box body 1. The guide groove 31 is connected to the pulp chamber 111. The height of the guide groove 31 is greater than the height of the screen 2. The upper end of the feed box 3 is provided with a feed port 32. The feed port 32 is connected to the guide groove 31 and is used to pour materials into the guide groove 31. The end of the box body 1 away from the feed box 3 is provided with a discharge port 12 and a liquid outlet 13. The discharge port 12 is connected to the pulp chamber 111. The lower edge of the discharge port 12 is in contact with the upper surface of the screen 2. The liquid outlet 13 is connected to the filtrate chamber 112. The lower edge of the liquid outlet 13 is in contact with the bottom of the pulp tank 11.

[0044] Reference Figure 3 and Figure 4 The cleaning assembly 5 includes a rotating shaft 51, an impeller 52, a first bevel gear 53, a reciprocating screw 54, a second bevel gear 55, a sliding rod 56, a connecting rod 57, a first spring 58, and a brush 59. Along the length direction of the box body 1, the inner wall of the pulp chamber 111 near the end of the feed box 3 is provided with a mounting opening 1111, and the inner wall opposite to the filtrate chamber 112 is provided with a guide groove 1121. The length direction of the guide groove 1121 is parallel to the length direction of the screen 2.

[0045] Reference Figure 4 and Figure 5 The mounting port 1111 is attached to the inner wall of the screen 2 and is provided with a rotating port 1112. The axis of the rotating port 1112 is perpendicular to the screen 2. The rotating port 1112 is connected to the guide groove 1121. The rotating shaft 51 passes through the rotating port 1112 and is rotatably connected to the inner wall of the rotating port 1112. The impeller 52 is embedded in the mounting port 1111 and is coaxially fixedly connected to the outer periphery of the rotating shaft 51. The first bevel gear 53 is provided in the guide groove 1121 and coaxially fixedly connected to the outer periphery of the rotating shaft 51. Both ends of the reciprocating screw rod 54 are rotatably connected to the groove wall of the guide groove 1121. The rotation axis of the reciprocating screw rod 54 is parallel to the length direction of the guide groove 1121. The second bevel gear 55 is coaxially fixedly connected to the outer periphery of the reciprocating screw rod 54, and the first bevel gear 53 is engaged with the second bevel gear 55.

[0046] Reference Figure 4The two ends of the sliding rod 56 are respectively embedded in the two guide grooves 1121, and the sliding rod 56 facing the screen 2 is provided with a sliding groove 562. The sliding groove 562 is provided with two, and the two sliding grooves 562 are spaced apart along the length direction of the sliding rod 56. The outer periphery of one end of the connecting rod 57 is provided with a snap ring 571, and the snap ring 571 is slidably embedded in the sliding groove 562. The outer diameter of the snap ring 571 is equal to the inner diameter of the sliding groove 562. One end of the first spring 58 is fixedly connected to the bottom of the sliding groove 562, and the other end of the first spring 58 is fixedly connected to the snap ring 571 at one end facing the bottom of the sliding groove 562. The end of the connecting rod 57 away from the bottom of the sliding groove 562 is fixedly connected to the brush rod of the brush 59. The bristles of the brush 59 abut the lower surface of the screen 2, and the length of the brush 59 is equal to the width of the screen 2.

[0047] Reference Figure 1 The dredging assembly 6 includes a fixed seat 61, a drive shaft 62, a cam 63, a transmission rod 64, a third bevel gear 651, a fourth bevel gear 652, a guide column 66, a drive plate 67, a second spring 68 and a push block 69. There are two fixed seats 61, both of which are fixedly connected to the end of the box body 1 away from the feed box 3. The fixed seat 61 is provided with a fixed port 611, the axis of the fixed port 611 is perpendicular to the screen 2, and the two fixed ports 611 are arranged opposite each other. The two ends of the drive shaft 62 are respectively rotatably connected to the inner walls of the two fixed ports 611, and the rotation axis of the drive shaft 62 is parallel to the axis of the fixed port 611. The cam 63 is fixedly connected to the outer periphery of the drive shaft 62.

[0048] Reference Figure 5 The guide groove 1121 is provided with a through opening 1122 on the groove wall facing the feed box 3, and the through opening 1122 extends along the length direction of the box body 1. One end of the transmission rod 64 passes through the through opening 1122 and is coaxially fixedly connected to the reciprocating screw 54. The outer wall of the transmission rod 64 is rotatably connected to the inner wall of the through opening 1122. The other end of the transmission rod 64 extends out of the through opening 1122 and is coaxially fixedly connected to the third bevel gear 651. The fourth bevel gear 652 is coaxially fixedly connected to the outer periphery of the drive shaft 62. The fourth bevel gear 652 is provided below the cam 63, and the third bevel gear 651 is meshed with the fourth bevel gear 652.

[0049] Reference Figure 1One end of the guide column 66 is fixedly connected to the end of the box body 1 away from the feed box 3, and the driving plate 67 is provided with a sliding opening 671. The axis of the sliding opening 671 is parallel to the length direction of the box body 1. The guide column 66 is slidably connected to the inner wall of the sliding opening 671. The other end of the guide column 66 extends out of the sliding opening 671 and is coaxially fixedly connected with the clamping plate 661. The outer diameter of the clamping plate 661 is larger than the inner diameter of the sliding opening 671. The second spring 68 is sleeved on the outer periphery of the guide column 66, and one end of the second spring 68 is fixedly connected to the end of the box body 1 away from the feed box 3, and the other end of the second spring 68 is fixedly connected to the driving plate 67. There are two guide columns 66, which are respectively arranged on both sides of the discharge port 12. The push block 69 is fixedly connected to the end of the drive plate 67 facing the box body 1. The push block 69 is arranged opposite the discharge port 12. The push block 69 is used to extend into the discharge port 12 to achieve clearing of the discharge port 12. The outer periphery of the cam 63 is fitted to the drive plate 67.

[0050] Reference Figure 1 and Figure 6 The extrusion assembly 7 includes a pressing plate 71, a limiting rod 72, a rotating disk 73, a first synchronous pulley 74, a second synchronous pulley 75, a synchronous belt 76, and a connecting rod 77. Along the length of the box body 1, the inner walls of the pulp chamber 111, which are located near the discharge port 12, are each provided with a positioning groove 1113. The two positioning grooves 1113 are arranged opposite each other, and the length direction of the positioning grooves 1113 is perpendicular to the screen 2. The two ends of the pressing plate 71 are respectively slidably embedded in the positioning grooves 1113. The pressing plate 71 is used to squeeze the pulp together with the screen 2.

[0051] Reference Figure 6 and Figure 7 A limiting opening 1114 is provided on the inner wall of the pulp chamber 111 facing the feed box 3. The limiting opening 1114 is located on the side of the discharge port 12 near the fixed seat 61. The axis of the limiting opening 1114 is parallel to the length of the box body 1. The limiting rod 72 passes through the limiting opening 1114 and is rotatably connected to the inner wall of the limiting opening 1114. The rotating disk 73 is located in the pulp chamber 111 and is coaxially fixedly connected to the outer periphery of the limiting rod 72.

[0052] Reference Figure 1 and Figure 6 The first synchronous wheel 74 is arranged outside the box body 1 and is coaxially fixedly connected to the outer periphery of the limit rod 72. The second synchronous wheel 75 is coaxially fixedly connected to the outer periphery of the transmission rod 64. The second synchronous wheel 75 is arranged between the box body 1 and the third bevel gear 651. The synchronous belt 76 is sleeved on the outer periphery of the first synchronous wheel 74 and the second synchronous wheel 75.

[0053] Reference Figure 6 and Figure 8The edge of the turntable 73 facing the feed box 3 is connected to a rotating column 731, the axis of the rotating column 731 is parallel to the axis of the turntable 73, one end of the connecting rod 77 is provided with a first linkage port 771, the rotating column 731 is rotatably connected to the inner wall of the first linkage port 771, the end of the pressure plate 71 away from the screen 2 is connected to a fixed column 711, the axis of the fixed column 711 is parallel to the axis of the turntable 73, the other end of the connecting rod 77 is provided with a second linkage port 772, the fixed column 711 is rotatably connected to the inner wall of the second linkage port 772.

[0054] The implementation principle of a pulp filtering and dewatering device in an embodiment of the present application is as follows: the water-containing pulp is poured into the guide groove 31 from the feed port 32, and the water-containing pulp drives the impeller 52 to rotate, and the reciprocating screw 54 to rotate. In the process of dehydrating the water-containing pulp, the sliding rod 56 moves back and forth along the length direction of the reciprocating screw 54 to clean the screen 2; the cam 63 rotates and cooperates with the second spring 68 to make the drive plate 67 move back and forth, and the push block 69 extends into the discharge port 12 at intervals to clear the discharge port 12; the turntable 73 rotates and controls the pressure plate 71 to move up and down through the connecting rod 77 to squeeze the pulp.

[0055] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A pulp filtration and dewatering device, characterized in that: The invention comprises a box body (1), a screen (2), a feed box (3), a sliding rod (56) and a brush (59), wherein the upper end of the box body (1) is provided with a pulp trough (11), the outer periphery of the screen (2) is connected to the inner periphery of the pulp trough (11), and the screen (2) divides the pulp trough (11) from top to bottom into a pulp cavity (111) and a filtrate cavity (112), and along the length direction of the box body (1), the feed box (3) is connected to one end of the box body (1), and the end of the feed box (3) facing the box body (1) is provided with a guide groove (31), and the guide groove (31) is connected to the pulp cavity (111), and the height of the screen (2) decreases as it moves away from the feed box (3), and the feed box (3) A feed port (32) is provided, the feed port (32) being connected to the guide groove (31); a discharge port (12) and a liquid outlet (13) are provided at one end of the box body (1) away from the feed box (3); the discharge port (12) is connected to the pulp chamber (111); the liquid outlet (13) is connected to the filtrate chamber (112); guide grooves (1121) are provided on opposite inner walls of the filtrate chamber (112); the length direction of the guide grooves (1121) is parallel to the screen (2); the two ends of the sliding rod (56) are respectively slidably embedded in the guide grooves (1121); the brush rod of the brush (59) is connected to the sliding rod (56); and the bristles of the brush (59) abut against the lower end of the screen (2); The height of the box body (1) decreases as it moves away from the feed box (3), and the height of the screen (2) decreases as it moves away from the feed box (3); It also includes a reciprocating screw rod (54), both ends of which are rotatably connected to the groove wall of the guide groove (1121), the rotation axis of the reciprocating screw rod (54) is parallel to the length direction of the guide groove (1121), one end of the sliding rod (56) is provided with a thread opening (561), and the reciprocating screw rod (54) passes through the thread opening (561) and is threadedly connected to the inner wall of the thread opening (561); The invention also includes a rotating shaft (51), an impeller (52), a first bevel gear (53) and a second bevel gear (55); an inner wall of the pulp chamber (111) at one end close to the feed box (3) is provided with a mounting opening (1111); an inner wall of the mounting opening (1111) is provided with a rotating opening (1112); the rotating opening (1112) extends to communicate with the guide groove (1121); the rotating shaft (51) passes through the rotating opening (1112) and is rotatably connected to the rotating opening (1112); ), the rotation axis of the rotating shaft (51) is perpendicular to the screen (2), the impeller (52) is arranged in the mounting opening (1111) and is coaxially fixedly connected to the outer periphery of the rotating shaft (51), the first bevel gear (53) is arranged in the guide groove (1121) and is coaxially fixedly connected to the outer periphery of the rotating shaft (51), the second bevel gear (55) is coaxially fixedly connected to the outer periphery of the reciprocating screw (54), and the first bevel gear (53) is meshed with the second bevel gear (55); It also includes a pressing plate (71), the pressing plate (71) being slidably connected to the inner wall of the pulp chamber (111) near the discharge port (12), the sliding direction of the pressing plate (71) being perpendicular to the screen (2), and the pressing plate (71) being used to squeeze the pulp together with the screen (2); It also includes a turntable (73) and a connecting rod (77), wherein the turntable (73) is rotatably connected to the inner wall of the pulp chamber (111) facing the feed box (3), the rotation axis of the turntable (73) is parallel to the length direction of the box body (1), one end of the connecting rod (77) is rotatably connected to the outer edge of the turntable (73), and the other end of the connecting rod (77) is rotatably connected to the end of the pressing plate (71) facing away from the screen (2), and the rotation axes of both ends of the connecting rod (77) are parallel to the rotation axis of the turntable (73); It also includes a transmission rod (64), a fixed seat (61) and a third bevel gear (651), wherein the fixed seat (61) is fixedly connected to one end of the box body (1) away from the feed box (3), and a through opening (1122) is provided on the groove wall of the guide groove (1121) facing the feed box (3), and the through opening (1122) extends along the length direction of the box body (1), and one end of the transmission rod (64) passes through the through opening (1122) and is coaxially fixedly connected to the reciprocating screw rod (54), and the outer wall of the transmission rod (64) is rotatably connected to the inner wall of the through opening (1122), and the other end of the transmission rod (64) extends out of the through opening (1122) and is coaxially fixedly connected to the third bevel gear (651); It also includes a limiting rod (72), a first synchronous wheel (74), a second synchronous wheel (75), and a synchronous belt (76); a limiting opening (1114) is provided on the inner wall of the pulp chamber (111) facing the feed box (3); the limiting opening (1114) is provided on a side of the discharge port (12) close to the fixed seat (61); the axis of the limiting opening (1114) is parallel to the length direction of the box body (1); the limiting rod (72) passes through the limiting opening (1114) and is rotatably connected to the inner wall of the limiting opening (1114); the turntable (73) is provided in the pulp chamber (111) and is coaxially fixedly connected to the outer periphery of the limiting rod (72); The first synchronous wheel (74) is arranged outside the housing (1) and is coaxially fixedly connected to the outer periphery of the limit rod (72); the second synchronous wheel (75) is coaxially fixedly connected to the outer periphery of the transmission rod (64); the second synchronous wheel (75) is arranged between the housing (1) and the third bevel gear (651); and the synchronous belt (76) is sleeved on the outer peripheries of the first synchronous wheel (74) and the second synchronous wheel (75).

2. A pulp filtration and dewatering device according to claim 1, characterized in that: It also includes a connecting rod (57) and a first spring (58), wherein one end of the sliding rod (56) facing the screen (2) is provided with a sliding groove (562), one end of the connecting rod (57) is slidably embedded in the sliding groove (562), and the other end of the connecting rod (57) is connected to the brush rod of the brush (59), one end of the first spring (58) is connected to the bottom of the sliding groove (562), and the other end of the first spring (58) is connected to the connecting rod (57).

3. The pulp filtration and dewatering device according to claim 1, characterized in that: It also includes a driving plate (67) and a pushing block (69), wherein the driving plate (67) is slidably connected to one end of the box body (1) facing away from the feed box (3), one end of the pushing block (69) is connected to one end of the driving plate (67) facing toward the box body (1), and the other end of the pushing block (69) is used to extend into the discharge port (12).

4. The pulp filtration and dewatering device according to claim 3, characterized in that: It also includes a second spring (68) and a guide column (66), the drive plate (67) is provided with a sliding opening (671), one end of the guide column (66) is connected to the end of the box body (1) away from the feed box (3), the other end of the guide column (66) is slidably connected to the inner wall of the sliding opening (671), the second spring (68) is sleeved on the outer periphery of the guide column (66), one end of the second spring (68) is connected to the box body (1), and the other end of the second spring (68) is connected to the drive plate (67).

5. The pulp filtration and dewatering device according to claim 4, characterized in that: The invention also includes a drive shaft (62), a cam (63) and a fourth bevel gear (652), wherein the drive shaft (62) is rotatably connected to the fixed seat (61), the rotation axis of the drive shaft (62) is perpendicular to the screen (2), the cam (63) is fixedly connected to the outer periphery of the drive shaft (62), the outer periphery of the cam (63) abuts against one end of the drive plate (67) facing the box body (1), the fourth bevel gear (652) is coaxially fixedly connected to the outer periphery of the drive shaft (62), the fourth bevel gear (652) is arranged below the cam (63), and the third bevel gear (651) is meshed with the fourth bevel gear (652).

6. The pulp filtration and dewatering device according to claim 1, characterized in that: Along the length direction of the box body (1), opposite inner walls of the pulp chamber (111) are provided with positioning grooves (1113), the length direction of the positioning grooves (1113) is perpendicular to the screen (2), and both ends of the pressing plate (71) are slidably embedded in the positioning grooves (1113).

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