Pulping and residue screening device

Abstract

The utility model relates to the technical field of papermaking, in particular to a pulping residue screening device which comprises a circulation pipe, the inner wall of the periphery of the circulation pipe is designed to be square, a residue discharging opening is formed in one side of the bottom of the circulation pipe, a residue collecting frame is fixedly installed at the bottom of the residue discharging opening, and a partition plate is fixed to the top of the inner wall of the circulation pipe. An ascending pipe penetrating through the circulating pipe and the partition plate is fixedly installed at the bottom end of the residue collecting frame, the ascending pipe is inclined, a residue discharging mechanism is arranged in the ascending pipe, and an inclined filtering plate is fixedly installed between the top of the inner wall of the circulating pipe, the top of the inner wall of one side of the residue discharging opening and the bottom of the partition plate. According to the continuous slag discharging device, continuous slag discharging treatment is achieved, the phenomenon that slag is accumulated in the device to cause serious blocking is avoided, the subsequent slag screening process is prevented from being affected, part of water carried in the slag flows back into the runner pipe to be discharged, the water is effectively separated from the slag, and the blocking problem caused by the first filter screen is avoided.

Description

Technical Field

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

[0002] Pulping and papermaking are mainly divided into two processes according to the process flow: pulping and papermaking. Pulping is the process of making plant fiber raw materials or recycled waste paper into pulp, and papermaking is the process of using appropriate technology to make pulp into paper or paperboard with various properties. The pulping and papermaking process is relatively complicated. The pulp properties formed by different raw materials and different pulping methods are different, and the paper products produced are also different. According to different pulping methods, the most important pulping methods at present are kraft pulping, chemical mechanical pulping and waste paper pulping. In the pulping process, a screening process is required to remove impurities to meet quality and normal production needs.

[0003] After searching, the patent publication number CN212477263U is a papermaking pulp residue fine screening device, including a main body, a screening bin is arranged at the top of the main body, a fixed block is arranged inside the screening bin, a screen is arranged inside the fixed block, a card slot is arranged on the inner side of the top of the main body, a cover plate is arranged at the top of the main body, a card block is arranged inside the bottom of the cover plate, a selection bin is arranged at the bottom end of the main body, a support plate is arranged at one end of the main body, a motor is installed on the top of the support plate, and a rotating shaft that penetrates into the selection bin is arranged at the output end of the motor. In the process of implementing this scheme, it is found that the following problems in the prior art have not been well solved: the prior art is a continuous process when screening pulp residue. If the residue remains in the device and is not discharged in time, serious blockage will occur, affecting the subsequent screening operation, and the discharged residue also carries a small amount of moisture, which cannot be effectively treated at this time. Therefore, it is urgent to design a pulping screening device to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a pulping and screening device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A pulping and screening device comprises a circulation pipe, the inner walls of which are designed to be square, and a slag discharge port is opened on one side of the bottom of the circulation pipe, a residue collection frame is fixedly installed at the bottom of the slag discharge port, a partition is fixedly installed on the top of the inner wall of the circulation pipe, and a riser that passes through the circulation pipe and the partition is fixedly installed on the bottom end of the residue collection frame, and the riser is inclined, and a slag discharge mechanism is arranged inside the riser, an inclined filter plate is fixedly installed between the inner wall of the circulation pipe, the top of the inner wall of one side of the slag discharge port and the bottom of the partition, and a first filter screen distributed equidistantly is fixedly installed on the filter plate, a scraper assembly is arranged in the middle position of the filter plate, and a driving mechanism is arranged between the scraper assembly and the slag discharge mechanism.

[0007] Furthermore, the slag discharge mechanism includes a transmission shaft rotatably connected to the middle position of the top end of the riser, and a screw dragon attached to the inner wall of the riser is fixed to the bottom of the transmission shaft, and a slag discharge pipe is fixed to the top of the riser.

[0008] Furthermore, a downpipe inserted into the circulation pipe is fixed on the top of one side of the riser, and a one-way valve is provided on the downpipe. A second filter is fixedly installed on the top of the inner wall of the downpipe.

[0009] Furthermore, the scraper assembly includes a fixed frame fixedly installed on the circulation pipe in an inclined shape, and the inclination angle of the fixed frame is the same as the inclination angle of the riser, the top of the circulation pipe and the partition plate are provided with through holes, and the top of the fixed frame is rotatably connected with a drive shaft passing through the through holes and the filter plate, the inner wall of the through holes is fixed with a sealing sleeve mounted on the outer wall of the drive shaft, and a plurality of scrapers are fixed to the bottom end of the drive shaft, and the scrapers are attached to one side of the first filter screen.

[0010] Furthermore, the driving mechanism includes a small transmission wheel fixed on the transmission shaft, and a large transmission wheel is fixed at the top of the driving shaft, a transmission belt is connected between the large transmission wheel and the small transmission wheel, a driven bevel gear is fixed to the outer wall of the driving shaft, and a motor is fixedly installed on the outer wall of one side of the fixed frame, and an active bevel gear is fixedly installed on the output shaft of the motor, and one side of the active bevel gear is meshed with one side of the driven bevel gear.

[0011] Furthermore, a first through hole for the rising pipe to pass through is formed on the circulation pipe and the partition plate, and a second through hole for the driving shaft to pass through is formed on the filter plate.

[0012] Furthermore, flanges are fixed at both ends of the flow pipe, and an annular sealing groove is provided on one side of the flange.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model adopts a first filter screen to filter the pulping liquid flowing into the circulation pipe, and cooperates with a slag discharge mechanism to discharge the filtered residue, thereby realizing continuous slag discharge treatment, avoiding the accumulation of residue inside the device to cause serious blockage, and preventing the subsequent screening process from being affected.

[0015] The utility model enables part of the water carried in the residue to flow back into the circulation pipe along the second filter screen and the downpipe and be discharged, thereby effectively separating the water from the residue and ensuring the utilization rate of the slurry.

[0016] The utility model makes the scraper assembly rotate synchronously under the drive of the driving mechanism, and uses the scraper to clean the first filter screen, so as to avoid the problem of clogging of the first filter screen and affecting the overall drainage effect of the flow pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the overall structure of a pulping and screening device.

[0018] Figure 2 It is a front cross-sectional view of a pulping and screening device.

[0019] Figure 3 The present invention is a schematic diagram of the structure of a slag discharge port and a first filter screen of a pulping and slag screening device.

[0020] Figure 4 The figure is a schematic diagram of the active bevel gear and scraper structure of a pulping and screening device.

[0021] In the figure: 1. circulation pipe; 2. residue collection frame; 3. riser; 4. flange; 5. one-way valve; 6. downpipe; 7. small transmission wheel; 8. slag discharge pipe; 9. transmission belt; 10. large transmission wheel; 11. fixed frame; 12. motor; 13. auger; 14. partition; 15. second filter screen; 16. drive shaft; 17. driven bevel gear; 18. sealing sleeve; 19. filter plate; 20. scraper; 21. slag discharge port; 22. first filter screen; 23. insertion hole; 24. active bevel gear. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] See also Figure 1-Figure 4In an embodiment of the utility model, a pulping and screening device comprises a circulation pipe 1, the inner walls of the circulation pipe 1 are designed to be square, and a slag discharge port 21 is opened on one side of the bottom of the circulation pipe 1, a residue collection frame 2 is fixedly installed at the bottom of the slag discharge port 21, a partition 14 is fixedly installed on the top of the inner wall of the circulation pipe 1, and a rising pipe 3 passing through the circulation pipe 1 and the partition 14 is fixedly installed at the bottom end of the residue collection frame 2, and the rising pipe 3 is inclined, and a slag discharge mechanism is arranged inside the rising pipe 3, and the slag discharge mechanism comprises a transmission shaft rotatably connected to the middle position of the top end of the rising pipe 3, and the bottom of the transmission shaft is fixed There is an auger 13 fitted on the inner wall of the riser 3, a slag discharge pipe 8 is fixed on the top of the riser 3, an inclined filter plate 19 is fixedly installed between the inner wall of the circulation pipe 1, the top of the inner wall of one side of the slag discharge port 21 and the bottom of the partition 14, and a first filter screen 22 distributed at an equal distance is fixedly installed on the filter plate 19, and a scraper assembly is arranged in the middle of the filter plate 19, and the scraper assembly includes a fixed frame 11 fixedly installed on the circulation pipe 1 in an inclined shape, and the inclination angle of the fixed frame 11 is the same as the inclination angle of the riser 3, and a through hole is opened on the top of the circulation pipe 1 and the partition 14 The plug hole 23 is provided, and the top of the fixed frame 11 is rotatably connected with a driving shaft 16 passing through the plug hole 23 and the filter plate 19. The inner wall of the plug hole 23 is fixed with a sealing sleeve 18 sleeved on the outer wall of the driving shaft 16. A plurality of scrapers 20 are fixed to the bottom end of the driving shaft 16, and the scrapers 20 are attached to one side of the first filter screen 22. A driving mechanism is arranged between the scraper assembly and the slag discharge mechanism, and the driving mechanism includes a small transmission wheel 7 fixed on the transmission shaft, and a large transmission wheel 10 is fixed to the top of the driving shaft 16. A transmission belt 9 is connected between the large transmission wheel 10 and the small transmission wheel 7, and the driving shaft 1 6 is fixed with a driven bevel gear 17, and a motor 12 is fixedly installed on the outer wall of one side of the fixed frame 11, and a driving bevel gear 24 is fixedly installed on the output shaft of the motor 12, and one side of the driving bevel gear 24 is meshed with one side of the driven bevel gear 17. The first filter screen 22 is used to filter the pulping liquid flowing into the circulation pipe 1, and the residue after filtration is discharged in conjunction with the slag discharge mechanism to achieve continuous slag discharge treatment, avoid residue accumulation inside the device to cause serious blockage, and use a scraper 20 to clean the first filter screen 22 to avoid blockage of the first filter screen 22.

[0025] Specifically, a first through hole for the riser 3 to pass through is formed on the circulation pipe 1 and the partition plate 14 , and a second through hole for the drive shaft 16 to pass through is formed on the filter plate 19 , so as to facilitate the installation of the riser 3 and the drive shaft 16 .

[0026] Specifically, flanges 4 are fixed at both ends of the circulation pipe 1, and an annular sealing groove is opened on one side of the flange 4, so that the entire device can be connected to the slurry discharge equipment to facilitate the circulation of the pulping slurry in the pipe.

[0027] Example 2

[0028] See also Figure 1 and Figure 2 , which is different from Example 1, a downpipe 6 inserted into the circulation pipe 1 is fixed to the top of one side of the riser 3, and a one-way valve 5 is provided on the downpipe 6, and a second filter screen 15 is fixedly installed on the top of the inner wall of the downpipe 6, so that part of the moisture carried in the residue flows back to the circulation pipe 1 along the second filter screen 15 and the downpipe 6 for discharge, thereby effectively separating the moisture from the residue.

[0029] The working principle of the utility model is as follows: when in use, the user docks the pump body of the slurry discharge device through the flange 4, so that the slurry flows in the circulation pipe 1, and the slurry is filtered through the first filter screen 22, so that the liquid is discharged along the circulation pipe 1, and the residue gradually falls into the residue collection frame 2, and the user starts the motor 12 in the driving mechanism at a fixed time, and uses the rotation of the motor 12 to drive the active bevel gear 24 and the driven bevel gear 17, the drive shaft 16, the large transmission wheel 10, the transmission belt 9 and the small transmission wheel 7 to rotate synchronously, thereby driving the scraper 20 in the scraper assembly and the auger 13 in the slag discharge mechanism to rotate synchronously, and uses the propulsion action of the auger 13 to drive the residue in the residue collection frame 2 to be discharged from the slag discharge pipe 8, and makes part of the water carried in the residue flow back to the circulation pipe 1 along the second filter screen 15 and the downpipe 6 for discharge, and the first filter screen 22 is cleaned under the scraping action of the scraper 20 to avoid clogging of the first filter screen 22.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A pulping and screening device, comprising a circulation pipe (1), characterized in that: The inner walls of the circulation pipe (1) are designed to be square, and a slag discharge port (21) is provided on one side of the bottom of the circulation pipe (1). A residue collection frame (2) is fixedly installed at the bottom of the slag discharge port (21). A partition plate (14) is fixedly installed on the top of the inner wall of the circulation pipe (1), and a riser (3) passing through the circulation pipe (1) and the partition plate (14) is fixedly installed at the bottom end of the residue collection frame (2). The riser (3) is inclined, and a slag discharge mechanism is arranged inside the riser (3). An inclined filter plate (19) is fixedly installed between the inner wall of the circulation pipe (1), the top of the inner wall of one side of the slag discharge port (21) and the bottom of the partition plate (14), and first filter screens (22) are fixedly installed on the filter plate (19) at equal distances. A scraper assembly is arranged in the middle of the filter plate (19), and a driving mechanism is arranged between the scraper assembly and the slag discharge mechanism.

2. A pulping and screening device according to claim 1, characterized in that: The slag discharge mechanism comprises a transmission shaft rotatably connected to the middle position of the top end of the riser (3), and a screw dragon (13) is fixed to the bottom of the transmission shaft and is attached to the inner wall of the riser (3), and a slag discharge pipe (8) is fixed to the top of the riser (3).

3. A pulping and screening device according to claim 2, characterized in that: A downpipe (6) inserted into the circulation pipe (1) is fixed on the top of one side of the riser (3), and a one-way valve (5) is provided on the downpipe (6). A second filter screen (15) is fixedly installed on the top of the inner wall of the downpipe (6).

4. A pulping and screening device according to claim 3, characterized in that: The scraper assembly comprises a fixed frame (11) fixedly mounted on the circulation pipe (1) in an inclined shape, and the inclination angle of the fixed frame (11) is the same as the inclination angle of the riser (3), the top of the circulation pipe (1) and the partition (14) are both provided with insertion holes (23), and the top of the fixed frame (11) is rotatably connected with a driving shaft (16) passing through the insertion hole (23) and the filter plate (19), the inner wall of the insertion hole (23) is fixed with a sealing sleeve (18) sleeved on the outer wall of the driving shaft (16), and the bottom end of the driving shaft (16) is fixed with a plurality of scrapers (20), and the scrapers (20) are attached to one side of the first filter screen (22).

5. A pulping and screening device according to claim 4, characterized in that: The driving mechanism comprises a small transmission wheel (7) fixed on a transmission shaft, a large transmission wheel (10) is fixed on the top of the driving shaft (16), a transmission belt (9) is connected between the large transmission wheel (10) and the small transmission wheel (7), a driven bevel gear (17) is fixed on the outer wall of the driving shaft (16), a motor (12) is fixedly mounted on the outer wall of one side of the fixing frame (11), a driving bevel gear (24) is fixedly mounted on the output shaft of the motor (12), and one side of the driving bevel gear (24) is meshed with one side of the driven bevel gear (17).

6. A pulping and screening device according to claim 5, characterized in that: The circulation pipe (1) and the partition plate (14) are provided with a first through hole for the riser (3) to pass through, and the filter plate (19) is provided with a second through hole for the drive shaft (16) to pass through.

7. A pulping and screening device according to claim 1, characterized in that: Flanges (4) are fixed at both ends of the flow pipe (1), and an annular sealing groove is provided on one side of the flange (4).

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