Papermaking pulp deslagging device

Abstract

The utility model belongs to the technical field of pulp residue removal, and discloses a papermaking pulp residue removal device which comprises a residue removal box, and a residue removal assembly is arranged in the residue removal box. The slag removal assembly comprises two groups of material sliding plates which are obliquely arranged in the slag removal box, a slag filtering silk screen is mounted on one side of the upper surface of each material sliding plate, and a group of rotating rods are mounted on the sides, close to each other, of the two groups of material sliding plates respectively; compared with the prior art, the papermaking pulp deslagging device has the advantages that the deslagging assembly is innovatively designed, papermaking pulp with different densities can be conveniently treated, the inclination angle of the material sliding plate can be flexibly adjusted through the deslagging assembly, and according to the difference of the densities of the pulp, the papermaking pulp can be conveniently and rapidly treated through the deslagging assembly. The flowing speed of the filter material in the filtering process is regulated and controlled.

Description

Technical Field

[0001] This utility model belongs to the field of pulp deslagging technology, and specifically relates to a pulp deslagging device for papermaking. Background Technology

[0002] In the papermaking industry, pulp deslagging is a crucial step. Paper pulp often contains various impurities such as bark, sawdust, and sand. If these impurities are not removed, they will severely affect paper quality, leading to problems such as holes and spots, and reducing the paper's strength and smoothness. Therefore, filtering impurities through a wire mesh to obtain pure pulp and achieve deslagging has become an indispensable step in the papermaking production line. The core principle of this process is to utilize the screening characteristics of the wire mesh's aperture, allowing the pulp to pass through while trapping the impurities, thereby completing solid-liquid separation and providing clean raw materials for subsequent papermaking processes.

[0003] However, current pulp deslagging equipment cannot effectively address the varying requirements for filtration flow rates due to differences in pulp consistency. Different papermaking raw materials and production processes result in variations in pulp consistency; pulp made from recycled paper may be relatively viscous, while pulp made from virgin wood pulp may be relatively thin. Different consistencies lead to different pulp flow rates, requiring different flow rates during filtration. Viscous pulp requires a relatively large tilt angle or other methods to increase flow rate to ensure smooth passage through the screen and prevent clogging; thin pulp requires a relatively gentle flow rate to ensure thorough filtration. However, existing equipment struggles to flexibly adjust to these differences, resulting in reduced deslagging efficiency.

[0004] In view of this, this application proposes a pulp deslagging device to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a pulp deslagging device. Through an innovative design of the deslagging component, it achieves convenient processing of pulps of varying consistency. This component allows for flexible adjustment of the tilt angle of the sliding plate, controlling the flow rate of the pulp during the filtration process according to its consistency. This solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution:

[0007] A paper pulp deslagging device includes a deslagging box, which contains a deslagging assembly. The deslagging assembly includes two sets of sliding plates inclinedly arranged inside the deslagging box. A filter screen is installed on one side of the upper surface of each sliding plate, and a set of rotating rods is installed on the side of each set of sliding plates that are close to each other. A main gear is provided at the rear of the deslagging box, and a secondary gear is meshed with one side of the main gear. An electric motor is provided at the rear of the main gear.

[0008] With the above technical solution, when the main gear and the auxiliary gear rotate synchronously, they will drive the slide plate to rotate through the connected rotating rod. In this way, the inclination of the slide plate can be flexibly adjusted according to the paper pulp of different consistency, thereby controlling the flow rate of the pulp.

[0009] In a preferred embodiment, the main gear and the auxiliary gear are respectively fixedly connected to the rear ends of the two sets of rotating rods, and two sets of bearings are installed on the front of the slag removal box, with the front ends of the two sets of rotating rods respectively fixedly connected to the inner sides of the two sets of bearings.

[0010] Through the above technical solution, when the rotating rod rotates, the inner side of the bearing connected to it rotates synchronously, which improves the smoothness of the sliding plate during rotation adjustment.

[0011] In a preferred embodiment, the output shaft of the motor is fixedly connected to the main gear, a fixing plate is fixedly connected to the rear end of the motor, and the lower end of the fixing plate is fixedly connected to the slag removal box.

[0012] Through the above technical solution, the electric motor drives the main gear to rotate. Since the main gear and the auxiliary gear mesh with each other, the main gear can synchronously drive the auxiliary gear to rotate.

[0013] In a preferred embodiment, two sets of trapezoidal partition blocks are fixedly installed in a mirror image at the bottom of the slag removal box. A slurry chamber is provided below the two sets of trapezoidal partition blocks, and a set of slag material chambers are respectively opened on the left and right sides of the bottom of the slag removal box.

[0014] Through the above technical solution, the filtered slurry can flow between the two sets of sliding plates, and then be guided by the trapezoidal partition block to flow into the slurry chamber.

[0015] In a preferred embodiment, two sets of cleaning ports are respectively opened on both sides of the slag removal box, the cleaning ports are connected to the inside of the slag chamber, four sets of support legs are fixedly installed at the bottom of the slag removal box, a valve is installed at the bottom back of the slag removal box, and an outlet pipe is fixedly connected behind the valve, the valve is connected to the inside of the slurry chamber.

[0016] With the above technical solution, when it is necessary to discharge the slurry in the slurry chamber, simply open the valve and the slurry will be discharged outward through the outlet pipe.

[0017] In a preferred embodiment, a feeding assembly is provided above the slag removal box. The feeding assembly includes two sets of feeding boxes that are horizontally movable above the slag removal box, and the feeding boxes have openings at the top and bottom.

[0018] Using the above technical solution, paper pulp is poured into the feed box, and the pulp will fall onto the sliding plate through the feed box, and then slide down naturally with the inclined surface of the sliding plate.

[0019] In a preferred embodiment, a set of dovetail grooves is provided on each of the front and rear sides below the feed box, and a dovetail guide strip is provided in the dovetail groove, and the dovetail guide strip is fixedly connected to the slag removal box.

[0020] With the above technical solution, when the feed box moves, the dovetail groove at its bottom will slide smoothly along the path of the dovetail guide strip, thereby ensuring the stability of the feed box sliding.

[0021] In a preferred embodiment, a central screw cylinder is provided between the two sets of feed boxes, a rotating ring is installed in the middle of the central screw cylinder, and a set of push-pull screws are threadedly connected to both sides of the central screw cylinder. The two sets of push-pull screws have opposite thread directions, and one end of each set of push-pull screws is fixedly connected to the two sets of feed boxes through a fixing block.

[0022] The above technical solution involves rotating the central screw cylinder via a rotating ring. Since the central screw cylinder and the push-pull screws are designed based on the principle of threaded rotation, and the threads of the two sets of push-pull screws are in opposite directions, when the central screw cylinder rotates, the two sets of push-pull screws will push the feed boxes on both sides closer together or further apart via a fixed block.

[0023] After adopting the above technical solution, the beneficial effects of this utility model are:

[0024] 1. Through innovative design of the slag removal component, convenient processing of paper pulp with different consistency is achieved. This component can flexibly adjust the tilt angle of the slide plate to control the flow rate of the pulp during the filtration process according to the difference in pulp consistency. For pulp with high consistency and poor fluidity, the tilt angle of the slide plate is increased to promote the pulp to slide down quickly; while for pulp with low consistency and good fluidity, the tilt angle is appropriately reduced to ensure that the pulp can be fully filtered and effectively improve the slag removal efficiency.

[0025] 2. By designing the feeding assembly, the position of the feeding box can be flexibly adjusted. After the tilt angle of the slide plate is adjusted, the feeding assembly can adjust the position of the feeding box according to the current tilt state of the slide plate, ensuring that the feeding box can match the highest point of the tilt surface of the slide plate. This ensures that the paper pulp can enter the slide plate evenly and smoothly from the feeding box, avoiding uneven pulp distribution caused by improper feeding position. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of a paper pulp deslagging device according to the present invention.

[0028] Figure 2 This is a structural schematic diagram of a paper pulp deslagging device according to this utility model from another perspective.

[0029] Figure 3 This is a top-view structural diagram of a paper pulp deslagging device according to the present invention.

[0030] Figure 4 This is a cross-sectional structural schematic diagram of a paper pulp deslagging device according to the present invention.

[0031] Figure 5 for Figure 4 Enlarged schematic diagram of part A.

[0032] In the diagram, 1. Slag removal box; 2. Feeding assembly; 21. Feeding box; 22. Dovetail guide bar; 23. Fixing block; 24. Push-pull screw; 25. Central screw barrel; 26. Rotating ring; 3. Slag removal assembly; 31. Fixing plate; 32. Motor; 33. Main gear; 34. Secondary gear; 35. Sliding plate; 36. Filter screen; 37. Rotating rod; 38. Trapezoidal partition block; 39. Slurry chamber; 310. Slag chamber; 311. Bearing; 312. Cleaning port; 4. Valve; 5. Outlet pipe; 6. Support leg. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figures 1 to 5 A paper pulp deslagging device includes a deslagging box 1, and a deslagging assembly 3 is provided inside the deslagging box 1. The deslagging assembly 3 includes two sets of sliding plates 35 inclinedly arranged inside the deslagging box 1. A filter screen 36 is installed on one side of the upper surface of the sliding plate 35. A set of rotating rods 37 are respectively installed on the side of the two sets of sliding plates 35 that are close to each other. A main gear 33 is provided at the rear of the deslagging box 1. A secondary gear 34 is meshed with one side of the main gear 33. An electric motor 32 is provided at the rear of the main gear 33.

[0035] When the main gear 33 and the secondary gear 34 rotate synchronously, they drive the sliding plate 35 to rotate via the connected rotating rod 37. In this way, the inclination of the sliding plate 35 can be flexibly adjusted according to the paper pulp of different consistency, thereby controlling the flow rate of the pulp.

[0036] The main gear 33 and the auxiliary gear 34 are fixedly connected to the rear ends of the two sets of rotating rods 37 respectively. Two sets of bearings 311 are installed on the front of the slag removal box 1. The front ends of the two sets of rotating rods 37 are fixedly connected to the inner sides of the two sets of bearings 311 respectively.

[0037] When the rotating rod 37 rotates, the inner side of the bearing 311 connected to it rotates synchronously, which improves the smoothness of the sliding plate 35 during rotation adjustment.

[0038] The output shaft of the motor 32 is fixedly connected to the main gear 33, and a fixing plate 31 is fixedly connected to the rear end of the motor 32. The lower end of the fixing plate 31 is fixedly connected to the slag removal box 1.

[0039] The electric motor 32 drives the main gear 33 to rotate. Since the main gear 33 and the auxiliary gear 34 mesh with each other, the main gear 33 can synchronously drive the auxiliary gear 34 to rotate.

[0040] Two sets of trapezoidal partition blocks 38 are fixedly installed in a mirror image at the bottom of the slag removal box 1. A slurry chamber 39 is provided below the two sets of trapezoidal partition blocks 38. A set of slag material chambers 310 are respectively opened on the left and right sides of the bottom of the slag removal box 1.

[0041] After filtration, the slurry can flow between the two sets of sliding plates 35, and then be guided by the trapezoidal partition block 38 into the slurry chamber 39.

[0042] Two sets of cleaning ports 312 are opened on both sides of the slag removal box 1. The cleaning ports 312 are connected to the inside of the slag chamber 310. Four sets of support legs 6 are fixedly installed at the bottom of the slag removal box 1. A valve 4 is installed at the bottom back of the slag removal box 1. A discharge pipe 5 is fixedly connected behind the valve 4. The valve 4 is connected to the inside of the slurry chamber 39.

[0043] When it is necessary to drain the slurry in the slurry chamber 39, simply open the valve 4, and the slurry will be discharged outward through the outlet pipe 5.

[0044] A feeding assembly 2 is provided above the slag removal box 1. The feeding assembly 2 includes two sets of feeding boxes 21 that are located above the slag removal box 1 and can move laterally. The feeding boxes 21 have openings at the top and bottom.

[0045] The paper pulp is poured into the feed box 21, and the pulp will fall onto the slide plate 35 through the feed box 21, and then slide down naturally with the inclined surface of the slide plate 35.

[0046] A set of dovetail slides is provided on the front and rear sides of the feed box 21. Dovetail guide strips 22 are provided in the dovetail slides and are fixedly connected to the slag removal box 1.

[0047] When the feed box 21 moves, the dovetail groove at its bottom will slide smoothly along the path of the dovetail guide strip 22, thereby ensuring the stability of the feed box 21 sliding.

[0048] A central screw cylinder 25 is provided between the two sets of feed boxes 21. A rotating ring 26 is installed in the middle of the central screw cylinder 25. A set of push-pull screws 24 are threadedly connected to both sides of the central screw cylinder 25. The two sets of push-pull screws 24 have opposite thread directions. One end of the two sets of push-pull screws 24 is fixedly connected to the two sets of feed boxes 21 through a fixing block 23.

[0049] The central screw barrel 25 is rotated by the rotating ring 26. Since the central screw barrel 25 and the push-pull screw 24 are designed based on the principle of thread rotation, and the threads of the two sets of push-pull screws 24 are opposite, when the central screw barrel 25 rotates, the two sets of push-pull screws 24 will push the feed boxes 21 on both sides closer to each other or further away from each other through the fixing block 23.

[0050] In practical use, the working principle of this utility model is as follows:

[0051] Before use, start the motor 32, which drives the main gear 33 to rotate. Since the main gear 33 meshes with the secondary gear 34, the main gear 33 can synchronously drive the secondary gear 34 to rotate. When the main gear 33 and secondary gear 34 rotate synchronously, they drive the sliding plate 35 to rotate via the connected rotating rod 37. This allows for flexible adjustment of the tilt of the sliding plate 35 according to different consistency of paper pulp, thereby controlling the flow rate of the pulp. During the rotation of the rotating rod 37, the inner side of the bearing 311 connected to it rotates synchronously, improving the smoothness of the sliding plate 35 during rotation adjustment. After adjusting the tilt of the sliding plate 35, rotate the central screw 25 via the rotating ring 26. Since the central screw 25 and the push-pull screw 24 are designed based on the principle of threaded rotation, and the threads of the two sets of push-pull screws 24 are in opposite directions, when the central screw 25 rotates, the two sets of push-pull screws 24 will push the feed boxes 21 on both sides closer or further apart via the fixing block 23. In this way, after the tilt angle of the slide plate 35 is adjusted, the position of the feed box 21 can be flexibly adjusted to ensure that the feed box 21 can accurately match the highest point of the tilt surface of the slide plate 35. During the movement of the feed box 21, the dovetail groove at its bottom will slide smoothly along the path of the dovetail guide strip 22, thereby ensuring the stability of the sliding of the feed box 21.

[0052] After adjustment, the paper pulp is poured into the feed box 21, and the pulp will naturally slide down the inclined surface of the sliding plate 35. During the descent, the pulp will pass through the filter screen 36, where the residue will be intercepted and filtered, achieving residue removal. The filtered pulp continues to flow between the two sets of sliding plates 35, and then is guided by the trapezoidal partition block 38 into the pulp chamber 39. When it is necessary to discharge the pulp, simply open the valve 4, and the pulp will be discharged outward through the outlet pipe 5. After the residue removal is completed, operate again to rotate the two sets of sliding plates 35 in opposite directions until the lower surface of the sliding plate 35 contacts the trapezoidal partition block 38. At this time, the residue accumulated at the filter screen 36 will slide down the inclined surface of the sliding plate 35 and fall into the residue chamber 310 below, achieving rapid residue removal. To remove the residue, it can be directly removed through the cleaning port 312.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pulp deslagging device, comprising a deslagging box (1), characterized in that: The slag removal box (1) is equipped with a slag removal component (3); The slag removal assembly (3) includes two sets of sliding plates (35) inclinedly arranged in the slag removal box (1). A filter screen (36) is installed on one side of the upper surface of the sliding plate (35). A set of rotating rods (37) is installed on the side of the two sets of sliding plates (35) that are close to each other. The slag removal box (1) is provided with a main gear (33) at the rear, and a secondary gear (34) is meshed with one side of the main gear (33). The motor (32) is provided at the rear of the main gear (33).

2. The paper pulp deslagging device as described in claim 1, characterized in that: The main gear (33) and the auxiliary gear (34) are respectively fixedly connected to the rear ends of the two sets of rotating rods (37). The front of the slag removal box (1) is equipped with two sets of bearings (311). The front ends of the two sets of rotating rods (37) are respectively fixedly connected to the inner sides of the two sets of bearings (311).

3. The paper pulp deslagging device as described in claim 2, characterized in that: The output shaft of the motor (32) is fixedly connected to the main gear (33), and a fixing plate (31) is fixedly connected to the rear end of the motor (32). The lower end of the fixing plate (31) is fixedly connected to the slag removal box (1).

4. The paper pulp deslagging device as described in claim 3, characterized in that: The slag removal box (1) has two sets of trapezoidal partition blocks (38) fixedly installed in a mirror image at the bottom. The two sets of trapezoidal partition blocks (38) are provided with slurry chambers (39) below them. The slag removal box (1) has a set of slag chambers (310) on the left and right sides at the bottom.

5. The paper pulp deslagging device as described in claim 4, characterized in that: Two sets of cleaning ports (312) are respectively opened on both sides of the slag removal box (1). The cleaning ports (312) are connected to the inside of the slag material chamber (310). Four sets of support legs (6) are fixedly installed at the bottom of the slag removal box (1). A valve (4) is installed at the bottom back of the slag removal box (1). A discharge pipe (5) is fixedly connected behind the valve (4). The valve (4) is connected to the inside of the slurry chamber (39).

6. The paper pulp deslagging device as described in claim 1, characterized in that: The slag removal box (1) is provided with a feeding assembly (2) above it. The feeding assembly (2) includes two sets of feeding boxes (21) that are located above the slag removal box (1) and can move laterally. The feeding boxes (21) are open at the top and bottom.

7. The paper pulp deslagging device as described in claim 6, characterized in that: The feed box (21) is provided with a set of dovetail grooves on the front and rear sides below, and dovetail guide strips (22) are provided in the dovetail grooves. The dovetail guide strips (22) are fixedly connected to the slag removal box (1).

8. The paper pulp deslagging device as described in claim 7, characterized in that: A central screw cylinder (25) is provided between the two sets of feed boxes (21). A rotating ring (26) is installed in the middle of the central screw cylinder (25). A set of push-pull screws (24) are threadedly connected to both sides of the central screw cylinder (25). The two sets of push-pull screws (24) have opposite thread directions. One end of the two sets of push-pull screws (24) is fixedly connected to the two sets of feed boxes (21) through a fixing block (23).

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