Paper pulp filtering and screening device for clean papermaking

Abstract

The utility model discloses a paper pulp filtering and screening device for clean papermaking, which relates to the technical field of paper pulp filtering and screening devices and comprises a frame body, a left plate and a right plate of a connecting frame are provided with discharging grooves, the connecting frame is connected with a filtering plate and a lug plate, the connecting plate is connected with a scraper, a lead screw is fixedly provided with a motor, and the frame body is provided with an avoiding groove. The worm is connected with a worm gear and a double-head motor, and the threaded rod is connected with a threaded sleeve; a double-end motor is started to drive a worm to rotate a worm gear, the worm gear drives a threaded rod to enable a threaded sleeve to move upwards, the threaded sleeve drives a connecting frame to move upwards through a lug plate, the threaded sleeve drives a limiting rod to slide to the maximum position in a limiting groove, and the double-end motor is closed; a motor is started to drive a screw rod, so that a scraping plate on a connecting plate moves back and forth to push sundries on a filtering plate, and the sundries are discharged from discharging grooves in the two sides; the problems that when a brush restores to the initial position, part of sundries are pushed to the side away from a cleaning opening, sundries are accumulated, and the cleaning effect is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulp filtering and screening devices, in particular to a pulp filtering and screening device for clean papermaking. Background Technique

[0002] The pulp filtering and screening device is an indispensable equipment in the papermaking process, which is used to improve the quality of paper. In the papermaking process, pulp is the main raw material processed from plant fiber raw materials by mechanical or chemical methods. Since the pulp may contain large plant fibers or sundries, if these components are not effectively removed, they will affect the subsequent paper making. Therefore, a filter screen is needed to finely filter the pulp.

[0003] Chinese Patent CN212895652U discloses a pulp filtering and screening device for clean papermaking, including a filtering and screening device body, a pulp pool, a lead screw, a stepping motor, a filter screen and a pulp discharge pipe. A pulp pool is arranged on the filtering and screening device body, and a lead screw is arranged in the middle above the pulp pool. One end of the lead screw is connected to the stepping motor on the side wall of one side of the filtering and screening device body, and the other end of the lead screw is connected to the connecting groove bearing at the guide plate on the inner wall of the pulp pool on the other side of the filtering and screening device body through a bearing. A filter screen is arranged below the lead screw, and a pulp discharge pipe with a valve is welded at the side wall of the filtering and screening device body directly below the stepping motor. This pulp filtering and screening device for clean papermaking can avoid the accumulation of large particle fibers or sundries in the pulp on the filter screen while filtering the pulp, so as to keep the filter screen continuously filtering the pulp.

[0004] In the above patent, when the brush cleans the filter screen, it is very difficult to discharge the large particle fibers or sundries on the filter screen from one side by the brush at one time, and it needs to be cleaned back and forth many times to clean the filter screen. When the brush returns to the initial position, the brush will push some large particle fibers or sundries to the side far from the cleaning port, resulting in the accumulation of large particle fibers or sundries, and the cleaning effect is poor. Content of the Utility Model

[0005] The purpose of the utility model is to provide a pulp filtering and screening device for clean papermaking to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, the present utility model provides the following technical solutions: A pulp filtering and screening device for cleaning paper-making paper, comprising: a frame body, a connecting frame is slidably connected to the inner wall of the frame body, discharge grooves are opened at the lower ends of the left and right plates of the connecting frame, a filter plate is horizontally fixed to the lower inner wall of the connecting frame, a lead screw is horizontally rotatably connected to the upper end of the connecting frame, a connecting plate is connected to the outer wall of the lead screw through a lead screw nut, scraping plates are fixed to the left and right walls of the connecting plate and are located below the discharge grooves and are slidably connected to the top surface of the filter plate, the right end of the lead screw is fixed with a motor fixed to the outer wall of the connecting frame, an avoidance groove is opened on the top surface of the right plate of the frame body and is located outside the motor, a connecting frame is fixed to the bottom surface of the frame body, a double-headed motor is fixed to the connecting frame, worm shafts meshing with worm gears are horizontally fixed to the output ends of the double-headed motor, a threaded rod rotatably connected to a connecting block is vertically fixed to the worm gear, the connecting block is fixed to the outer wall of the frame body, threaded sleeves fixedly connected to ear plates are threadedly connected to the outer walls of the threaded rods, and the ear plates are fixed to the top surface of the connecting frame.

[0007] Further, legs are vertically fixed to the four corners of the frame body, the two ends of the lead screw are respectively rotatably connected to the left and right plates of the connecting frame, and the two ends of the connecting plate are slidably connected to the inner wall of the connecting frame.

[0008] Further, the cross-section of the scraping plate is in the shape of a right triangle, the width of the scraping plate is equal to the width of the discharge groove, the lead screw is fixed to the output end of the motor, a protective frame fixed to the right wall of the frame body is provided outside the motor, and the outer wall of the protective frame is movably connected to the inner wall of the avoidance groove.

[0009] Further, the cross-section of the connecting frame is in the shape of a U, the worm shaft is rotatably connected to the connecting frame and passes through the connecting frame, and the worm shaft is located on one side of the worm gear.

[0010] Further, the connecting block is fixed to the center of the lower end of the outer wall of the frame body, the threaded sleeve is located above the connecting block, and the ear plate is located above the frame body.

[0011] Further, limiting grooves slidably connected to limiting rods are vertically opened on the front and rear walls of the frame body, the limiting grooves are located above the connecting block, and the limiting rods are fixed to the outer walls of the threaded sleeves.

[0012] Further, a movable block abuting against the protective frame is movably connected to the inner wall of the avoidance groove, the movable block is the same size as the avoidance groove, a T-shaped rod is fixed to the right wall of the movable block, connecting shafts fixed to the outer wall of the frame body are horizontally slidably connected to both ends of the T-shaped rod, the cross-section of the connecting shaft is in the shape of a T, and springs fixed to the outer wall of the frame body are horizontally fixed to both ends of the T-shaped rod, and the springs are sleeved outside the connecting shafts.

[0013] Compared with the prior art, the beneficial effects achieved by the present utility model are:

[0014] 1. When cleaning large-particle fibers or debris on the filter plate, the double-headed motor of the present utility model is started. The output end of the double-headed motor drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the threaded rod to rotate on the connecting block, the threaded rod moves the threaded sleeve upward, and the threaded sleeve drives the connecting frame to slide upward in the frame body through the ear plate. The connecting frame drives the filter plate and other structures on the connecting frame to move upward simultaneously. At the same time, the threaded sleeve drives the limiting rod to slide in the limiting groove. When the limiting rod reaches the maximum position, the top surface of the filter plate and the top surface of the frame body are in the same plane. Then, the motor is started, the output end of the motor drives the lead screw to rotate, the lead screw makes the connecting plate slide back and forth on the inner wall of the connecting frame, and the connecting plate drives the scraper to push the large-particle fibers or debris on the filter plate, and the large-particle fibers or debris can be discharged from the discharge slots on both sides; this solves the problem that when the brush returns to the initial position, the brush will push some large-particle fibers or debris to the side away from the cleaning port, resulting in the accumulation of large-particle fibers or debris and poor cleaning effect.

[0015] 2. When the connecting frame moves upward, the protective frame on the connecting frame disengages from the avoidance groove and the movable block. At this time, under the action of the spring, the spring returns to its original position, the T-shaped rod slides on the connecting shaft, and the T-shaped rod drives the movable block to return to the avoidance groove, and the movable block and the avoidance groove are completely fitted, thereby avoiding the problem that when cleaning the filter plate, large-particle fibers or debris will enter the frame body under the filter plate from the avoidance groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0017] Figure 1 is a top view schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is the present utility model Figure 1 is an enlarged schematic diagram of the structure of area A in;

[0019] Figure 3 is a top view schematic diagram when the filter plate of the present utility model rises to the maximum position;

[0020] Figure 4 is the present utility model Figure 3 is an enlarged schematic diagram of the structure of area B in;

[0021] Figure 5 is a bottom view schematic diagram of the overall structure of the present utility model;

[0022] In the figure: 1. Frame body; 2. Leg; 3. Filter plate; 4. Lead screw; 5. Connecting frame; 6. Connecting plate; 7. Scraper; 8. Ear plate; 9. Connecting block; 10. Threaded sleeve; 11. Threaded rod; 12. Limiting rod; 13. Limiting groove; 14. Worm gear; 15. Worm; 16. Connecting frame; 17. Discharge chute; 18. Protective frame; 19. Motor; 20. Avoidance groove; 21. Movable block; 22. T-shaped rod; 23. Connecting shaft; 24. Spring; 25. Double-headed motor. Specific embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1 - 5, the present utility model provides a technical solution: a pulp filtering and screening device for cleaning paper-making, comprising: a frame body 1, a connecting frame 5 is slidably connected to the inner wall of the frame body 1, discharge grooves 17 are opened at the lower ends of the left and right plates of the connecting frame 5, so that large-particle fibers or sundries can be discharged from both sides. A filter plate 3 is horizontally fixed to the lower inner wall of the connecting frame 5. A lead screw 4 is horizontally rotatably connected to the upper end of the connecting frame 5. A connecting plate 6 is connected to the outer wall of the lead screw 4 through a lead screw nut. Legs 2 are vertically fixed at the four corners of the frame body 1. The two ends of the lead screw 4 are respectively rotatably connected to the left and right plates of the connecting frame 5. The two ends of the connecting plate 6 are slidably connected to the inner wall of the connecting frame 5. Scrapers 7 are fixed to both the left and right walls of the connecting plate 6 and are located below the discharge grooves 17 and slidably connected to the top surface of the filter plate 3. A motor 19 fixed to the outer wall of the connecting frame 5 is fixed to the right end of the lead screw 4. The cross-section of the scraper 7 is a right triangle, and the width of the scraper 7 is equal to the width of the discharge groove 17, so that large-particle fibers or sundries in the discharge groove 17 can also be cleaned out. The lead screw 4 is fixed to the output end of the motor 19. A protective frame 18 fixed to the right wall of the frame body 1 is provided outside the motor 19 to protect the motor 19. The outer wall of the protective frame 18 is movably connected to the inner wall of the avoidance groove 20. An avoidance groove 20 located outside the motor 19 is opened on the top surface of the right plate of the frame body 1. This space is used to place the motor 19. A connecting frame 16 is fixed to the bottom surface of the frame body 1. A double-headed motor 25 is fixed to the connecting frame 16. Worms 15 meshing with worm wheels 14 are horizontally fixed to the output ends of the double-headed motor 25. The cross-section of the connecting frame 16 is U-shaped. The worms 15 are rotatably connected to the connecting frame 16 and pass through the connecting frame 16. The worms 15 are located on one side of the worm wheels 14. A threaded rod 11 rotatably connected to a connecting block 9 is vertically fixed to the worm wheel 14. The connecting block 9 is fixed to the outer wall of the frame body 1. Threaded sleeves 10 fixedly connected to ear plates 8 are threadedly connected to the outer walls of the threaded rods 11. The ear plates 8 are fixed to the top surface of the connecting frame 5. The connecting block 9 is fixed to the center of the lower end of the outer wall of the frame body 1. The threaded sleeves 10 are located above the connecting block 9, and the ear plates 8 are located above the frame body 1. Limit grooves 13 slidably connected to limit rods 12 are vertically opened on the front and rear walls of the frame body 1. The limit grooves 13 are located above the connecting block 9. The limit rods 12 are fixed to the outer walls of the threaded sleeves 10. The limit rods 12 and the limit grooves 13 can ensure the moving position of the connecting frame 5. An active block 21 abuting against the protective frame 18 is movably connected to the inner wall of the avoidance groove 20. The active block 21 is the same size as the avoidance groove 20. When the protective frame 18 disengages from the avoidance groove 20, the active block 21 is located in the avoidance groove 20, preventing large-particle fibers or sundries from entering the frame body 1 below the filter plate 3 from the avoidance groove 20 during the cleaning process of the filter plate 3. A T-shaped rod 22 is fixed to the right wall of the active block 21. Connecting shafts 23 fixed to the outer wall of the frame body 1 are horizontally slid on both ends of the T-shaped rod 22. The cross-section of the connecting shaft 23 is T-shaped. Springs 24 fixed to the outer wall of the frame body 1 are horizontally fixed to both ends of the T-shaped rod 22. The springs 24 are sleeved outside the connecting shafts 23. When the cleaning is completed and the filter plate 3 returns to the initial position inside the frame body 1,It is necessary to first pull the T-shaped rod 22 to stretch the spring 24. At the same time, the movable block 21 completely disengages from the avoidance groove 20. After the filter plate 3 reaches the position, the T-shaped rod 22 can be released. At this time, the T-shaped rod 22 contacts the outer wall of the protective frame 18.,

[0025] Working principle of the utility model:

[0026] Refer to the attached instruction manual Figures 1 - 5 When cleaning large-particle fibers or debris on the filter plate 3, start the double-headed motor 25. The output end of the double-headed motor 25 drives the worm 15 to rotate. The worm 15 drives the worm wheel 14 to rotate. The worm wheel 14 drives the threaded rod 11 to rotate on the connecting block 9. The threaded rod 11 moves the threaded sleeve 10 upward. The threaded sleeve 10 drives the connecting frame 5 to slide upward in the frame body 1 through the ear plate 8. The connecting frame 5 drives the filter plate 3 to move upward and other structures on the connecting frame 5 to move upward at the same time. At the same time, the threaded sleeve 10 drives the limiting rod 12 to slide in the limiting groove 13. When the limiting rod 12 reaches the maximum position, the top surface of the filter plate 3 and the top surface of the frame body 1 are in the same plane, so that the residue will not flow into the frame body 1 from the edge of the filter plate 3 during cleaning. At this time, the protective frame 18 on the connecting frame 5 disengages from the avoidance groove 20 and the movable block 21. Under the action of the spring 24, the spring 24 returns to its original position. The T-shaped rod 22 slides on the connecting shaft 23. The T-shaped rod 22 drives the movable block 21 to return to the avoidance groove 20 to prevent the residue from entering the frame body 1 below the filter plate 3 from the avoidance groove 20 during subsequent cleaning of the filter plate 3; then start the motor 19. The output end of the motor 19 drives the lead screw 4 to rotate. The lead screw 4 moves the connecting plate 6 back and forth on the inner wall of the connecting frame 5. The connecting plate 6 drives the scraper 7 to push the large-particle fibers or debris on the filter plate 3, and the large-particle fibers or debris can be discharged from the discharge grooves 17 on both sides; it solves the problem that when the brush returns to the initial position, the brush will push some large-particle fibers or debris to the side away from the cleaning port, resulting in the accumulation of large-particle fibers or debris and poor cleaning effect.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pulp filtering and screening device for cleaning paper-making, comprising: Frame (1), characterized in that: a connecting frame (5) is slidably connected to the inner wall of the frame (1), discharge grooves (17) are formed at the lower ends of the left and right plates of the connecting frame (5), a filter plate (3) is horizontally fixed to the lower inner wall of the connecting frame (5), a lead screw (4) is horizontally rotated at the upper end of the connecting frame (5), a connecting plate (6) is connected to the outer wall of the lead screw (4) through a lead screw nut, scraping plates (7) are fixed to both the left and right walls of the connecting plate (6) and are located below the discharge grooves (17) and are slidably connected to the top surface of the filter plate (3), a motor (19) fixed to the outer wall of the connecting frame (5) is fixed to the right end of the lead screw (4), an avoidance groove (20) located outside the motor (19) is formed on the top surface of the right plate of the frame (1), a connecting frame (16) is fixed to the bottom surface of the frame (1), a double-headed motor (25) is fixed to the connecting frame (16), worms (15) meshing with worm wheels (14) are horizontally fixed to the output ends of the double-headed motor (25), threaded rods (11) rotating with connecting blocks (9) are vertically fixed to the worm wheels (14), the connecting blocks (9) are fixed to the outer wall of the frame (1), threaded sleeves (10) fixedly connected to ear plates (8) are threadedly connected to the outer walls of the threaded rods (11), and the ear plates (8) are fixed to the top surface of the connecting frame (5).

2. The cleaning and screening device for papermaking pulp according to claim 1, wherein: Legs (2) are vertically fixed to the four corners of the frame (1), the two ends of the lead screw (4) are respectively rotatably connected to the left and right plates of the connecting frame (5), and the two ends of the connecting plate (6) are slidably connected to the inner wall of the connecting frame (5).

3. The cleaning and papermaking pulp filtering and screening device according to claim 1, wherein: The cross section of the scraping plate (7) is a right triangle, the width of the scraping plate (7) is equal to the width of the discharge groove (17), the lead screw (4) is fixed to the output end of the motor (19), a protective frame (18) fixed to the right wall of the frame (1) is arranged outside the motor (19), and the outer wall of the protective frame (18) is movably connected to the inner wall of the avoidance groove (20).

4. A pulp filtering and screening device for cleaning paper-making paper according to claim 1, characterized in that: The cross section of the connecting frame (16) is U-shaped, the worm (15) is rotatably connected to the connecting frame (16), and the worm (15) passes through the connecting frame (16), and the worm (15) is located on one side of the worm wheel (14).

5. A pulp filtering and screening device for cleaning papermaking paper according to claim 1, characterized in that: The connecting block (9) is fixed to the center of the lower end of the outer wall of the frame (1), the threaded sleeve (10) is located above the connecting block (9), and the ear plate (8) is located above the frame (1).

6. The cleaning and papermaking pulp filtering and screening device according to claim 5, wherein: Limiting grooves (13) slidably connected to limiting rods (12) are vertically formed on the front and rear walls of the frame (1), the limiting grooves (13) are located above the connecting block (9), and the limiting rods (12) are fixed to the outer walls of the threaded sleeves (10).

7. The cleaning and screening device for papermaking pulp according to claim 3, characterized in that: A movable block (21) abutted against the protective frame (18) is movably connected to the inner wall of the avoidance groove (20), the movable block (21) is the same size as the avoidance groove (20), a T-shaped rod (22) is fixed to the right wall of the movable block (21), connecting shafts (23) fixed to the outer wall of the frame (1) are horizontally slid on both ends of the T-shaped rod (22), the cross section of the connecting shaft (23) is T-shaped, and springs (24) fixed to the outer wall of the frame (1) are horizontally fixed to both ends of the T-shaped rod (22), and the springs (24) are sleeved on the outside of the connecting shaft (23).

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