Uniform pulp screening device for papermaking

Abstract

The utility model discloses a pulp uniform screening device for papermaking, which relates to the technical field of pulp screening and comprises a base, supporting legs are fixedly connected to four corners of the bottom of the base, a rectangular groove is formed in the top of the base, and a pre-screening assembly and a reciprocating oscillation assembly are fixedly connected to the top of the base. The bottom of the base is slidably connected with a second screening assembly. Through the arrangement of the pre-screening assembly and the second screening assembly, large impurities in slurry are intercepted in the filter cylinder, the cleaning brush continuously cleans the outer wall of the filter cylinder, the phenomenon that the filtering effect is affected due to adhesion of the impurities is avoided, meanwhile, the slurry is further evenly screened on the filter screen through continuous sliding of the oscillation box, and the screening efficiency is improved. The multi-stage telescopic rod pushes impurities on the filter screen to the residue storage box, the influence of filter residues on the follow-up screening process is reduced, and therefore the working efficiency is further improved, the arranged reciprocating oscillation assembly is matched with all the assemblies, residues of the impurities on the screen are reduced, and the purity of slurry is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulp screening, in particular to a device for uniformly screening pulp for papermaking. Background Art

[0002] The device for uniformly screening pulp for papermaking is an indispensable equipment in the paper manufacturing process. It is mainly used for uniformly and efficiently screening and filtering cellulose pulp to improve the quality and production efficiency of paper. This device is widely used in industrial fields such as paper, cardboard, and pulp, and is applicable to various types of paper manufacturing processes, including books, newspapers, wrapping paper, toilet paper, etc. In addition, it can also be used for pulp screening work in other fields such as chemical industry and food. The following problems exist in the prior art:

[0003] In the existing device for uniformly screening pulp for papermaking, when in use, the pulp is directly poured onto the filter plate for filtration, and only the pulp fibers are simply screened. Due to the setting of the reciprocating oscillation component, when screening the raw materials, the filter cylinder and the filter screen cannot be reciprocally oscillated, and some impurities in the pulp cannot be filtered out, resulting in a very low filtering effect. In addition, the existing device cannot perform secondary screening on the raw materials and discharge the filter residue, reducing the product quality, and it is not convenient to handle the screened residue, thus bringing inconvenience to the work of the staff and reducing the production efficiency. Summary of the Utility Model

[0004] The utility model provides a device for uniformly screening pulp for papermaking to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A device for uniformly screening pulp for papermaking, including a base, four corners of the bottom of the base are fixedly connected with legs, a rectangular groove is opened at the top of the base, a pre-screening component and a reciprocating oscillation component are fixedly connected to the top of the base, and a second screening component is slidably connected to the bottom of the base.

[0007] The further improvement of the technical solution of the utility model lies in: the pre-screening component includes two side plates, the bottoms of the two side plates are fixedly connected with the base, the opposite surfaces of the left and right two side plates are fixedly connected with a hollow guide pipe, the right end of the hollow guide pipe penetrates through the right side wall of the right side plate, the bottom of the right side wall of the right side plate is fixedly connected with a motor 1, the output end of the motor 1 penetrates through the left side wall of the right side plate and is fixedly connected with a main gear, a driven gear rotatably connected to the outer wall of the hollow guide pipe is meshed above the main gear, a filter cylinder is rotatably connected to the outer wall of the hollow guide pipe, and a slag discharge port communicated with the inside thereof is fixedly connected to the top of the right side wall of the filter cylinder.

[0008] A further improvement of the technical solution of the present utility model lies in that: a spring sleeved on the outer wall of the hollow material guiding pipe is fixedly connected between the driven gear and the filter cartridge. Two symmetrically arranged rotating columns are fixedly connected to the left side wall of the driven gear. Two circular groove holes slidably connected to the outer wall of the rotating column are opened on the right side wall of the filter cartridge. A spray head communicated with the inside thereof is fixedly connected to the middle of the outer wall of the hollow material guiding pipe. Cleaning brushes attached to the outer wall of the filter cartridge are fixedly connected to the front side walls of the left and right side plates.

[0009] A further improvement of the technical solution of the present utility model lies in that: the reciprocating oscillation assembly includes a support rod and a fixed frame. The bottoms of the support rod and the fixed frame are fixedly connected to the top of the base. Two symmetrically arranged sliding rods are fixedly connected to the opposite surfaces of the support rod and the fixed frame. A moving frame is slidably connected to the outer walls of the two sliding rods. A second motor is fixedly connected to the rear side wall of the fixed frame. Crank two is rotatably connected to the inner walls of the front and rear sides of the moving frame. Fixed rods are rotatably connected to the opposite surfaces of the front and rear crank two. Crank one is rotatably connected to the inner walls of the front and rear sides of the fixed frame. The output end of the second motor penetrates into the interior of the fixed frame and is fixedly connected to the rear crank one. The opposite surfaces of the front and rear crank one are respectively rotatably connected to the front and rear fixed rods. Gear one and gear two are respectively rotatably connected to the left and right sides of the opposite surfaces of the front and rear fixed rods. The outer wall of gear one is meshed with gear two. A push plate is fixedly connected to the front side wall of the moving frame. A grinding pillar attached to the left side wall of the filter cartridge is fixedly connected to the right side of the push plate. A connecting rod is fixedly connected to the bottom of the push plate.

[0010] A further improvement of the technical solution of the present utility model lies in that: the second screening assembly includes an oscillation box. Slide rails slidably connected to the bottom of the base are fixedly connected to the front and rear sides of the top of the oscillation box. The top left side of the oscillation box is fixedly connected to the bottom of the connecting rod. A multi-stage telescopic rod is fixedly connected to the top left side wall of the oscillation box. A filter screen is fixedly connected to the upper part inside the oscillation box. The output end of the multi-stage telescopic rod penetrates into the left inner wall of the oscillation box and is fixedly connected to a slag pushing plate attached to the upper surface of the filter screen. A groove is opened on the right side wall of the oscillation box above the filter screen. A slag storage box is fixedly connected to the right side wall of the oscillation box below the groove. A drawer is slidably connected to the inside of the oscillation box below the filter screen. A handle is fixedly connected to the left side wall of the drawer.

[0011] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0012] 1. The utility model provides a device for uniformly screening pulp for papermaking, which comprises a pre-screening component and a second screening component. Through the rotation of the filter cartridge, larger impurities in the pulp are intercepted in the filter cartridge, and a cleaning brush continuously cleans the outer wall of the filter cartridge to prevent the attachment of impurities and affect the filtering effect, thereby helping the impurities in the pulp to be more evenly distributed on the screen, thereby improving the screening efficiency. Meanwhile, the continuous sliding of the oscillation box enables the pulp to be further evenly screened on the filter, and the multi-stage telescopic rod pushes the impurities on the filter to the slag storage box, thereby avoiding their accumulation in the screening component and reducing the influence of the filter residue on the subsequent screening process, thereby further improving the work efficiency.

[0013] 2. The utility model provides a papermaking pulp uniform screening device, which is provided with a reciprocating oscillation component. A rear crank 1 is driven to rotate by a motor 2. The front and rear cranks 1 and the front and rear cranks 2 are synchronously linked by the connecting action of a fixed rod. The rotation of the crank 1 and the crank 2 drives the movable frame to slide back and forth on the two sliding rods, thereby causing the push plate to move left and right. The abrasive column on the right side of the push plate continuously hits the left side wall of the filter cartridge, and the elastic force of the spring causes it to vibrate, thereby promoting the filtering of the pulp and the discharge of impurities. Through strong vibration, tiny impurities and fiber bundles in the pulp can be effectively removed, the residue of impurities on the screen can be reduced, and the purity of the pulp can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the pre-screening component of the utility model;

[0016] Figure 3 This is another schematic diagram of the structure of the pre-screening component of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the reciprocating oscillation component of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the second screening component of the utility model.

[0019] In the figure: 101, base; 102, support leg; 103, rectangular groove; 2, pre-screening component; 201, side plate; 202, motor 1; 203, hollow feed pipe; 204, main gear; 205, driven gear; 206, filter cartridge; 207, spring; 208, rotating column; 209, slag outlet; 210, spray head; 211, cleaning brush; 212, round groove hole; 3, reciprocating oscillation component; 301, support rod; 302, fixed frame; 303, sliding rod; 304, moving frame; 305, motor 2; 306, crank 1; 307, gear 1; 308, fixed rod; 309, crank 2; 310, gear 2; 311, push plate; 312, connecting rod; 4, second screening component; 401, oscillation box; 402, slide rail; 403, multi-stage telescopic rod; 404, slag pushing plate; 405, filter screen; 406, groove; 407, slag storage box; 408, drawer; 409, handle. Detailed implementation mode

[0020] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes:

[0021] As Figure 1 shown, the present utility model provides a pulp uniform screening device for papermaking, including a base 101, support legs 102 are fixedly connected to the four corners of the bottom of the base 101, a rectangular groove 103 is opened at the top of the base 101, a pre-screening component 2 and a reciprocating oscillation component 3 are fixedly connected to the top of the base 101, and a second screening component 4 is slidably connected to the bottom of the base 101.

[0022] The provided support legs 102 can effectively support the device, and the provided rectangular groove 103 facilitates the introduction of the raw materials pre-screened by the pre-screening component 2 into the second screening component 4 for the second screening operation.

[0023] As Figure 2 , Figure 3 shown, the pre-screening component 2 includes two side plates 201, the bottoms of the two side plates 201 are fixedly connected to the base 101, a hollow feed pipe 203 is fixedly connected to the opposite surfaces of the left and right side plates 201, the right end of the hollow feed pipe 203 penetrates through the right side wall of the right side plate 201, a motor 1 202 is fixedly connected to the bottom of the right side wall of the right side plate 201, the output end of the motor 1 202 penetrates through the left side wall of the right side plate 201 and is fixedly connected to a main gear 204, a driven gear 205 rotatably connected to the outer wall of the hollow feed pipe 203 is meshed above the main gear 204, a filter cartridge 206 is rotatably connected to the outer wall of the hollow feed pipe 203, and a slag outlet 209 communicating with its interior is fixedly connected to the top of the right side wall of the filter cartridge 206.

[0024] AsFigure 2 , Figure 3 As shown in Figure 3 , a spring 207 sleeving on the outer wall of the hollow material guiding pipe 203 is fixedly connected between the driven gear 205 and the filter cartridge 206. Two symmetrically arranged rotating columns 208 are fixedly connected to the left side wall of the driven gear 205. Two circular groove holes 212 slidably connected to the outer wall of the rotating column 208 are formed on the right side wall of the filter cartridge 206. A spray head 210 communicating with the inside thereof is fixedly connected to the middle of the outer wall of the hollow material guiding pipe 203. A cleaning brush 211 fitting on the outer wall of the filter cartridge 206 is fixedly connected to the front side walls of the left and right side plates 201.

[0025] When pre-screening the papermaking pulp, prepare the papermaking pulp to be screened, turn on the first motor 202. The output end of the first motor 202 drives the main gear 204 to rotate, and the main gear 204 further drives the driven gear 205 to rotate. The driven gear 205 drives the filter cartridge 206 to rotate around the hollow material guiding pipe 203 through the cooperation between the rotating column 208 and the circular groove hole 212 on the right side wall of the filter cartridge 206 and the connection of the spring 207. At this time, inject the papermaking pulp from the right end of the hollow material guiding pipe 203. The pulp passes through the hollow material guiding pipe 203 and is sprayed out by the spray head 210. As the filter cartridge 206 rotates, the larger impurities in the pulp are intercepted in the filter cartridge 206. When the impurities accumulate to a certain extent, they are discharged from the slag outlet 209. At the same time, the cleaning brushes 211 on the front side walls of the left and right side plates 201 continuously clean the outer wall of the filter cartridge 206 to prevent impurities from adhering and affecting the filtering effect, thereby helping the impurities in the pulp to be more evenly distributed on the screen, increasing the contact opportunity between the screen and the impurities, and improving the screening efficiency.

[0026] As Figure 4As shown in the figure, the reciprocating oscillation assembly 3 includes a support rod 301 and a fixed frame 302. The bottom of the support rod 301 and the fixed frame 302 are fixedly connected to the top of the base 101. Two symmetrically arranged upper and lower slide rods 303 are fixedly connected to the opposite surfaces of the support rod 301 and the fixed frame 302. A moving frame 304 is slidably connected to the outer walls of the two slide rods 303. A second motor 305 is fixedly connected to the rear side wall of the fixed frame 302. Crankshafts 309 are rotatably connected to the front and rear inner walls of the moving frame 304. Fixed rods 308 are rotatably connected to the opposite surfaces of the front and rear crankshafts 309. Crankshafts 306 are rotatably connected to the front and rear inner walls of the fixed frame 302. The output end of the second motor 305 penetrates into the interior of the fixed frame 302 and is fixedly connected to the rear crankshaft 306. The opposite surfaces of the front and rear crankshafts 306 are respectively rotatably connected to the front and rear fixed rods 308. A first gear 307 and a second gear 310 are respectively rotatably connected to the left and right sides of the opposite surfaces of the front and rear fixed rods 308. The outer wall of the first gear 307 is meshed with the second gear 310. A push plate 311 is fixedly connected to the front side wall of the moving frame 304. A grinding pillar that fits against the left side wall of the filter cartridge 206 is fixedly connected to the right side of the push plate 311. A connecting rod 312 is fixedly connected to the bottom of the push plate 311.

[0027] When it is necessary to oscillate the filter cartridge 206, on the left side of the filter cartridge 206, the second motor 305 is started, driving the rear crankshaft 306 to rotate. Through the connection of the fixed rod 308, the front and rear crankshafts 306 and the front and rear crankshafts 309 are synchronously linked. The rotation of the crankshaft 306 and the crankshaft 309 drives the moving frame 304 to slide left and right reciprocally on the two slide rods 303, thereby moving the push plate 311 left and right. The grinding pillar on the right side of the push plate 311 continuously impacts the left side wall of the filter cartridge 206, and through the elastic force of the spring 207, it generates vibration, promoting the filtration of the slurry and the discharge of impurities. Through strong vibration, tiny impurities and fiber bundles in the slurry can be effectively removed, reducing the residue of impurities on the sieve mesh and improving the purity of the slurry.

[0028] Such as Figure 5As shown in the figure, the second screening component 4 includes an oscillation box 401. On the front and rear sides of the top of the oscillation box 401, slide rails 402 fixedly connected to the bottom of the base 101 are slidably connected. The left side of the top of the oscillation box 401 is fixedly connected to the bottom of the connecting rod 312. The top of the left side wall of the oscillation box 401 is fixedly connected to a multi-stage telescopic rod 403. Above the interior of the oscillation box 401, a filter screen 405 is fixedly connected. The output end of the multi-stage telescopic rod 403 penetrates through the left inner wall of the oscillation box 401 and is fixedly connected to a slag pushing plate 404 that fits the upper surface of the filter screen 405. A groove 406 is formed on the right side wall of the oscillation box 401 above the filter screen 405. A slag storage box 407 is fixedly connected to the right side wall of the oscillation box 401 below the groove 406. A drawer 408 is slidably connected inside the oscillation box 401 below the filter screen 405. A handle 409 is fixedly connected to the left side wall of the drawer 408.

[0029] When secondary screening and slag discharging are required to further improve the cleanliness, the connecting rod 312 at the bottom of the push plate 311 drives the oscillation box 401 to slide back and forth at the bottom of the base 101 as the push plate 311 moves. When the preliminarily filtered slurry falls onto the filter screen 405 inside the oscillation box 401, the continuous sliding of the oscillation box 401 enables the slurry to be further evenly screened on the filter screen 405, improving the uniformity and quality of the screening.

[0030] When slag discharging is required, the multi-stage telescopic rod 403 is started regularly to push the slag pushing plate 404 to move on the upper surface of the filter screen 405, pushing the impurities on the filter screen 405 towards the groove 406. The impurities finally fall into the slag storage box 407, while the slurry after secondary screening passes through the filter screen 405 and falls into the lower drawer 408 for collection. The staff can take out the drawer 408 at any time by pulling the handle 409 to process the collected slurry. The timely discharge of the slag avoids its accumulation in the screening component, reduces the influence of the slag on the subsequent screening process, and thus further improves the work efficiency.

[0031] Next, the working principle of the pulp uniform screening device for papermaking will be specifically described.

[0032] As Figures 1-5As shown, when it is necessary to pre-screen the papermaking pulp, prepare the papermaking pulp to be screened, turn on the motor 1 202, and the output end of the motor 1 202 drives the main gear 204 to rotate, and the main gear 204 then drives the slave gear 205 to rotate. The slave gear 205 drives the filter cartridge 206 to rotate around the hollow guide tube 203 through the cooperation of the rotating column 208 and the circular groove hole 212 on the right side wall of the filter cartridge 206 and the connection effect of the spring 207. At this time, the papermaking pulp is passed from the right end of the hollow guide tube 203. After injection, the slurry is sprayed out from the nozzle 210 through the hollow guide tube 203. As the filter cartridge 206 rotates, larger impurities in the slurry are intercepted in the filter cartridge 206. When the impurities accumulate to a certain extent, they are discharged from the slag outlet 209. At the same time, the cleaning brushes 211 on the front side walls of the left and right side panels 201 continuously clean the outer wall of the filter cartridge 206 to prevent impurities from adhering to the filtering effect, thereby helping the impurities in the slurry to be more evenly distributed on the screen, increasing the contact opportunity between the screen and the impurities, and improving the screening efficiency.

[0033] When the filter cartridge 206 needs to be oscillated, on the left side of the filter cartridge 206, the motor 2 305 is started to drive the rear crank 1 306 to rotate, and through the connection of the fixed rod 308, the front and rear cranks 1 306 and the front and rear cranks 2 309 are synchronously linked, and the rotation of the crank 1 306 and the crank 2 309 drives the movable frame 304 to slide back and forth on the two sliding rods 303, thereby moving the push plate 311 left and right, and the pillar on the right side of the push plate 311 continuously hits the left side wall of the filter cartridge 206, and the elastic force of the spring 207 causes it to vibrate, thereby promoting the filtering of the slurry and the discharge of impurities. Through the strong vibration, the tiny impurities and fiber bundles in the slurry can be effectively removed, the residual impurities on the screen can be reduced, and the purity of the slurry can be improved.

[0034] When secondary screening and residue discharge are required to further improve the cleanliness, the connecting rod 312 at the bottom of the push plate 311 drives the oscillation box 401 to slide back and forth at the bottom of the base 101 as the push plate 311 moves. When the slurry that has undergone preliminary filtration falls onto the filter screen 405 in the oscillation box 401, the continuous sliding of the oscillation box 401 allows the slurry to be further evenly screened on the filter screen 405, thereby improving the uniformity and quality of screening.

[0035] When the filter residue needs to be discharged, the multi-stage telescopic rod 403 is started at a fixed time, pushing the slag pushing plate 404 to move on the upper surface of the filter screen 405, pushing the impurities on the filter screen 405 to the groove 406, and the impurities finally fall into the slag storage box 407, while the slurry that has undergone secondary screening passes through the filter screen 405 and falls into the drawer 408 below for collection. The staff can take out the drawer 408 at any time by pulling the handle 409 to process the collected slurry. The timely discharge of the filter residue avoids its accumulation in the screening component, reduces the influence of the filter residue on the subsequent screening process, and further improves the work efficiency.

[0036] The above has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made thereto, which are obvious to those of ordinary skill in the art. Therefore, any modifications or improvements made without departing from the spirit and concept of the present utility model fall within the protection scope of the present utility model.

Claims

1. A pulp uniform screening device for papermaking, comprising a base (101), characterized in that: Four legs (102) are fixedly connected to the four corners of the bottom of the base (101). A rectangular groove (103) is formed in the top of the base (101). A pre-screening assembly (2) and a reciprocating oscillation assembly (3) are fixedly connected to the top of the base (101). A second screening assembly (4) is slidably connected to the bottom of the base (101).

2. The uniform screening device for papermaking pulp according to claim 1, characterized in that: The pre-screening assembly (2) includes two side plates (201). The bottoms of the two side plates (201) are fixedly connected to the base (101). A hollow guide pipe (203) is fixedly connected to the opposite surfaces of the left and right side plates (201). The right end of the hollow guide pipe (203) penetrates through the right side wall of the right side plate (201). A motor one (202) is fixedly connected to the bottom of the right side wall of the right side plate (201). The output end of the motor one (202) penetrates through the left side wall of the right side plate (201) and is fixedly connected to a main gear (204). A driven gear (205) that is rotatably connected to the outer wall of the hollow guide pipe (203) is meshed above the main gear (204). A filter cylinder (206) is rotatably connected to the outer wall of the hollow guide pipe (203). A slag outlet (209) that is communicated with the inside thereof is fixedly connected to the top of the right side wall of the filter cylinder (206).

3. The pulp uniform screening device for papermaking according to claim 2, wherein: A spring (207) sleeved on the outer wall of the hollow guide pipe (203) is fixedly connected between the driven gear (205) and the filter cylinder (206). Two symmetrically arranged rotating columns (208) are fixedly connected to the left side wall of the driven gear (205). Two circular groove holes (212) that are slidably connected to the outer wall of the rotating column (208) are formed in the right side wall of the filter cylinder (206). A spray head (210) that is communicated with the inside thereof is fixedly connected to the middle of the outer wall of the hollow guide pipe (203). Cleaning brushes (211) that are attached to the outer wall of the filter cylinder (206) are fixedly connected to the front side walls of the left and right side plates (201).

4. A pulp uniform screening device for papermaking according to claim 3, characterized in that: The reciprocating oscillation assembly (3) includes a support rod (301) and a fixed frame (302). The bottom of the support rod (301) and the fixed frame (302) are fixedly connected to the top of the base (101). Two vertically symmetric slide rods (303) are fixedly connected to the opposite surfaces of the support rod (301) and the fixed frame (302). A moving frame (304) is slidably connected to the outer walls of the two slide rods (303). A second motor (305) is fixedly connected to the rear side wall of the fixed frame (302). Crank arms two (309) are rotatably connected to the front and rear inner side walls of the moving frame (304). Fixed rods (308) are rotatably connected to the opposite surfaces of the front and rear crank arms two (309). Crank arms one (306) are rotatably connected to the front and rear inner side walls of the fixed frame (302). The output end of the second motor (305) penetrates into the interior of the fixed frame (302) and is fixedly connected to the rear crank arm one (306). The opposite surfaces of the front and rear crank arms one (306) are respectively rotatably connected to the front and rear fixed rods (308). Gear one (307) and gear two (310) are respectively rotatably connected to the left and right sides of the opposite surfaces of the front and rear fixed rods (308). The outer wall of gear one (307) is meshed with gear two (310). A push plate (311) is fixedly connected to the front side wall of the moving frame (304). A grinding pillar that fits against the left side wall of the filter cartridge (206) is fixedly connected to the right side of the push plate (311). A connecting rod (312) is fixedly connected to the bottom of the push plate (311).

5. The pulp uniform screening device for papermaking according to claim 4, wherein: The second screening assembly (4) includes an oscillation box (401). Slide rails (402) that are slidably connected to the bottom of the base (101) are fixedly connected to the front and rear sides of the top of the oscillation box (401). The bottom of the connecting rod (312) is fixedly connected to the left side of the top of the oscillation box (401). A multi-stage telescopic rod (403) is fixedly connected to the top left side wall of the oscillation box (401). A filter screen (405) is fixedly connected to the upper part inside the oscillation box (401). The output end of the multi-stage telescopic rod (403) penetrates into the left inner wall of the oscillation box (401) and is fixedly connected to a slag pushing plate (404) that fits against the upper surface of the filter screen (405). A groove (406) located above the filter screen (405) is formed in the right side wall of the oscillation box (401). A slag storage box (407) located below the groove (406) is fixedly connected to the right side wall of the oscillation box (401). A drawer (408) located below the filter screen (405) is slidably connected to the interior of the oscillation box (401). A handle (409) is fixedly connected to the left side wall of the drawer (408).

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