Paper pulp dewatering device

Abstract

The utility model discloses a paper pulp dewatering device which comprises a shell and two extrusion rollers located in the shell, a crushing spiral roller is arranged above the two extrusion rollers, the paper pulp dewatering device further comprises a driving assembly arranged on the shell, the output end of the driving assembly is connected with a transmission assembly, the transmission assembly is arranged on the shell, and the transmission assembly is connected with the driving assembly. The transmission assembly is in transmission connection with the two extrusion rollers, and the driving assembly drives the transmission assembly to drive the two extrusion rollers to rotate in the opposite directions at the same time. According to the paper pulp dewatering device, due to the fact that the squeezing rollers are not prone to deformation after being pressed during pulp squeezing, all parts of the squeezing rollers can be kept to have the same pressure, the problems that pressure is not uniform and rollers are prone to deformation during paper pulp dewatering in traditional double-roller pulp squeezing are solved, the dewatering efficiency of the squeezing rollers is improved, and the dewatering efficiency of the squeezing rollers is improved. The obtained extruded raw materials are dried, the water content of paper pulp is reduced, meanwhile, chemical residues in paper are reduced, and efficient and stable continuous dehydration operation is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of paper pulp dewatering, and particularly relates to a paper pulp dewatering device. BACKGROUND

[0002] The paper pulp dewatering device is a mechanical device used for reducing the water content of paper pulp or pulp-like materials in the field of pulp making and paper making, and its core function is to remove free water and part of bound water in the pulp by mechanical or physical methods, so that the pulp is converted from liquid or semi-liquid state to solid or semi-solid state, for subsequent processing or transportation.

[0003] In the production and processing of toilet paper, a double-roller extrusion dewatering device is often used. The device applies mechanical extrusion force to the paper pulp material passing through the contact gap of the two oppositely rotating rollers, so as to extrude the water in the high-moisture toilet paper pulp and obtain relatively dry paper pulp material. However, when the double-roller extrusion dewatering device extrudes the paper pulp material, the roller is subjected to a reverse force. Since the roller is a beam structure supported at both ends, the middle part lacks support and may be slightly bent and deformed under high pressure. The pressure at both ends of the roller is greater than that in the middle part of the roller, which causes insufficient dewatering of the paper pulp material passing through the middle part of the roller. In the production of toilet paper, the higher the water content in the paper pulp material, the more the chemical residues in the paper pulp material, and the more the harmful components that are likely to be left in the subsequent production process. SUMMARY

[0004] The utility model aims at the deficiency in the above-mentioned technology, and provides a paper pulp dewatering device to solve the above-mentioned technical problems.

[0005] The utility model provides a paper pulp dewatering device, including the casing and two extrusion rollers in the casing, the top of two extrusion rollers is provided with broken spiral roller, still include:

[0006] The drive assembly is arranged on the casing, the output end of the drive assembly is connected with the transmission assembly, the transmission assembly is arranged on the casing, the transmission assembly is in transmission connection with the two extrusion rollers, and the drive assembly drives the transmission assembly to rotate the two extrusion rollers in opposite directions at the same time.

[0007] The power assembly is arranged on the casing and located on the other side opposite to the drive assembly, the output shaft is connected to the output end of the power assembly, the output shaft penetrates through the casing and extends to the inside of the extrusion roller, the bevel gear set is in transmission connection with the power assembly, and the power assembly drives the output shaft to rotate the bevel gear set.

[0008] The jacking assembly is arranged in the inside of the extrusion roller, the jacking assembly is in transmission connection with the bevel gear set of the power assembly, and the power assembly drives the jacking assembly to support the side wall of the extrusion roller through the bevel gear set.

[0009] Preferably, the two extrusion rollers are fixedly installed with rotating shafts at one end and rotating rings at the other end, and the rotating shafts and the rotating rings are rotationally connected with the shell.

[0010] Preferably, the driving assembly comprises a first motor fixedly installed on the side wall of the shell, and the rotating shafts of the two extrusion rollers penetrate through the side wall of the shell and are fixedly connected with the output end of the first motor.

[0011] Preferably, the transmission assembly comprises a first transmission shaft and a second transmission shaft, both of which are rotationally installed on the side wall of the shell and located between the two rotating shafts, and the two rotating shafts are on the same horizontal line as the first transmission shaft and the second transmission shaft, wherein a first sprocket is fixedly installed outside the rotating shaft connected with the first motor, a second sprocket is fixedly installed outside the first transmission shaft, the first sprocket and the second sprocket are transmissionally connected by a first chain, a first gear is fixedly installed outside the first transmission shaft, a second gear is fixedly installed outside the second transmission shaft, the first gear and the second gear are meshed with each other, a third sprocket is fixedly installed outside the second transmission shaft, and a fourth sprocket is fixedly installed outside the other rotating shaft, the third sprocket and the fourth sprocket are transmissionally connected by a second chain.

[0012] Preferably, the power assembly comprises a second motor fixedly installed on the side wall of the shell, and the output shaft of the second motor penetrates through the side wall of the shell and the extrusion roller and is rotationally connected therewith, a fixed frame is fixedly installed inside the extrusion roller, the output shaft penetrates through the fixed frame and is rotationally connected with the fixed frame, a first bevel gear is fixedly installed on the outside of the output shaft inside the extrusion roller, two mounting frames are fixedly installed inside the extrusion roller and located on both sides of the first bevel gear, a rotating rod is rotationally connected with each of the two mounting frames, a second bevel gear and a third bevel gear are fixedly installed at one end of the two rotating rods respectively, and the second bevel gear and the third bevel gear are meshed with the first bevel gear.

[0013] Preferably, a threaded blind hole is formed in the end face of each of the two rotating rods, and a threaded rod is threadedly connected in each of the two threaded blind holes, and a supporting plate is fixedly installed at one end of each of the two threaded rods, and the two supporting plates are shaped to fit the inner wall of the extrusion roller.

[0014] Preferably, a guide block is fixedly installed on the inner wall of the extrusion roller and is slidingly connected with the supporting plates.

[0015] Preferably, a feeding pipe is communicated with the lower part of the shell, and the feeding pipe is used to feed the paper pulp raw material into the shell.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] This invention provides a pulp dewatering device. A drive assembly drives a transmission assembly to rotate two extrusion rollers in opposite directions, squeezing out water from the pulp. A top support assembly inside the extrusion rollers solves the problems of deformation and uneven pressure in traditional equipment. A power assembly drives a bevel gear set to support the sidewalls of the extrusion rollers from the inside. This prevents deformation of the central part of the extrusion roller during pulp extrusion, ensuring uniform pressure across all parts of the roller. This solves the problems of uneven pressure and roller deformation in traditional double-roller pulping, enhancing the dewatering efficiency of the extrusion rollers. The resulting extruded raw material is drier, reducing pulp moisture content and chemical residues in the paper, achieving efficient and stable continuous dewatering operations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a cross-sectional schematic diagram of a pulp dewatering device according to the present invention;

[0020] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the extrusion roller of a pulp dewatering device according to the present invention;

[0021] Figure 3 This is a schematic diagram showing the connection between the rotating ring and the squeeze roller in a pulp dewatering device according to this utility model;

[0022] Figure 4 This is a schematic diagram of the drive assembly and transmission assembly of a pulp dewatering device according to the present invention;

[0023] Figure 5 This is a schematic diagram of the second motor of a pulp dewatering device according to the present invention.

[0024] In the diagram, 1. Housing; 2. Extrusion roller; 3. Crushing spiral roller; 4. Output shaft; 5. Rotating shaft; 6. Rotating ring; 7. First motor; 8. First transmission shaft; 9. Second transmission shaft; 10. First sprocket; 11. Second sprocket; 12. First chain; 13. First gear; 14. Second gear; 15. Third sprocket; 16. Fourth sprocket; 17. Second chain; 18. Second motor; 19. Fixing frame; 20. First bevel gear; 21. Mounting frame; 22. Rotating rod; 23. Second bevel gear; 24. Third bevel gear; 25. Threaded rod; 26. Top support plate; 27. Guide block; 28. Conveying pipe. DETAILED DESCRIPTION

[0025] This part will describe the specific embodiments of the utility model in detail, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the written part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as the limitation of the protection scope of the present application.

[0026] Embodiment 1:

[0027] As Figures 1 to 5 shown, the utility model provides a kind of pulp dewatering device, including shell 1, and two extruding rollers 2 in shell 1, the top of two extruding rollers 2 is provided with broken spiral roller 3, still include:

[0028] Drive assembly, drive assembly is set on shell 1, the output end of drive assembly is connected with transmission assembly, transmission assembly is set on shell 1, transmission assembly is transmission connection with two extruding rollers 2, drive assembly drives transmission assembly to drive two extruding rollers 2 to rotate in opposite directions simultaneously;

[0029] Power assembly, power assembly is set on shell 1 and is located at the other side opposite to drive assembly, the output end of power assembly is connected with output shaft 4, output shaft 4 is through shell 1 and extends to the inside of extruding roller 2, bevel gear set is transmission connection on output shaft 4, power assembly drives output shaft 4 to rotate bevel gear set;

[0030] Jacking assembly, jacking assembly is set in the inside of extruding roller 2, jacking assembly is transmission connection with the bevel gear set of power assembly, power assembly drives jacking assembly to support the side wall of extruding roller 2 by bevel gear set.

[0031] When machine starts, drive assembly makes two extruding rollers 2 rotate in opposite directions simultaneously by transmission system, paper pulp raw materials in shell 1 are transported upwards while being pressed dry, to prevent extruding roller 2 from deforming under high pressure, internal jacking assembly is designed in the inside of extruding roller 2, power assembly drives bevel gear set by output shaft 4 through extruding roller 2, and then drives the jacking assembly installed in the roller, jacking assembly forms support to the inner wall of extruding roller 2, ensure that roller does not deform when pressing, and the pressure of each part remains consistent.

[0032] Embodiment 2:

[0033] As Figures 1 to 5As shown, in combination with the technical solutions of Embodiment 1, in the technical solutions, one end of each of the two extrusion rollers 2 is fixedly installed with a rotating shaft 5, and the other end is fixedly installed with a rotating ring 6, and the rotating shaft 5 and the rotating ring 6 are rotationally connected with the shell 1. The rotating shaft 5 drives the rotation of the extrusion roller 2, and the other side of the extrusion roller 2 is rotationally connected with the shell 1 through the rotating ring 6, facilitating the installation of the extrusion roller 2 and the deepening of the output shaft 4 of the second motor 18 into the interior of the extrusion roller 2 through the center of the rotating ring 6.

[0034] Further, the driving assembly includes a first motor 7 fixedly installed on the side wall of the shell 1, and the rotating shafts 5 of the two extrusion rollers 2 penetrate the side wall of the shell 1, and the output end of the first motor 7 is fixedly connected with one of the rotating shafts 5. When the motor is started, power is directly transmitted to the first extrusion roller 2 through the connecting shaft, so that the first extrusion roller 2 is first rotated, and the reverse rotation of the other extrusion roller 2 is realized through the subsequent transmission system.

[0035] Further, the transmission assembly includes a first transmission shaft 8 and a second transmission shaft 9, both of which are rotationally installed on the side wall of the shell 1 and located between the two rotating shafts 5, and the two rotating shafts 5 are on the same horizontal line as the first transmission shaft 8 and the second transmission shaft 9. The outer side of the rotating shaft 5 connected with the first motor 7 is fixedly installed with a first sprocket 10, the outer side of the first transmission shaft 8 is fixedly installed with a second sprocket 11, the first sprocket 10 and the second sprocket 11 are transmissionally connected through a first chain 12, the outer side of the first transmission shaft 8 is further fixedly installed with a first gear 13, the outer side of the second transmission shaft 9 is fixedly installed with a second gear 14, the first gear 13 and the second gear 14 are in mesh with each other, the outer side of the second transmission shaft 9 is further fixedly installed with a third sprocket 15, and the outer side of the other rotating shaft 5 is fixedly installed with a fourth sprocket 16. The third sprocket 15 and the fourth sprocket 16 are transmissionally connected through a second chain 17. When the first motor 7 drives the first extrusion roller 2 to rotate, the first sprocket 10 fixed on the rotating shaft 5 transmits power to the first transmission shaft 8 through the chain, and a gear is further installed on the shaft, which engages with the gear on the second transmission shaft 9, so that the two transmission shafts rotate in opposite directions, and then the third sprocket 15 on the second transmission shaft 9 drives the second extrusion roller 2 to rotate through the other chain, ensuring that the two extrusion rollers 2 always rotate in opposite directions.

[0036] Further, the power assembly comprises a second motor 18 fixedly installed on the side wall of the shell 1, the output shaft 4 of the second motor 18 penetrates through the side wall of the shell 1 and the extrusion roller 2 and is rotationally connected therewith, the fixed frame 19 is fixedly installed in the extrusion roller 2, the output shaft 4 penetrates through the fixed frame 19 and is rotationally connected therewith, the first bevel gear 20 is fixedly installed on the outer side of the output shaft 4 in the extrusion roller 2, two mounting frames 21 are fixedly installed in the extrusion roller 2, the two mounting frames 21 are located on the two sides of the first bevel gear 20 respectively, the rotating rods 22 are rotationally connected to the two mounting frames 21 respectively, the second bevel gear 23 and the third bevel gear 24 are fixedly installed on one end of the two rotating rods 22 respectively, and the second bevel gear 23 and the third bevel gear 24 are in meshing connection with the first bevel gear 20. The second motor 18 drives the first bevel gear 20 to rotate the second bevel gear 23 and the third bevel gear 24, so that the supporting force is uniformly transmitted to the inner wall of the extrusion roller 2, thereby preventing the deformation of the roller during the pressing of the pulp.

[0037] Further, threaded blind holes are formed in the end faces of one ends of the two rotating rods 22, threaded rods 25 are threadedly connected in the two threaded blind holes respectively, and the supporting plates 26 are fixedly installed on one ends of the two threaded rods 25 respectively. When the bevel gears rotate the rotating rods 22, the threaded rods 25 move with the supporting plates 26, so that the supporting plates 26 abut against the inner wall of the roller, and sufficient supporting force is provided to prevent the deformation of the roller during the extrusion.

[0038] Further, the guide blocks 27 are fixedly installed on the inner wall of the extrusion roller 2 and are in sliding connection with the supporting plates 26. The guide blocks 27 prevent the supporting plates 26 from rotating with the threaded rods 25.

[0039] Further, the shell 1 is communicated with the material conveying pipe 28 at the lower portion, and the material conveying pipe 28 is used for conveying the paper pulp raw material into the shell 1. When the machine works, the paper pulp is continuously conveyed from the lower portion and falls between the two counter-rotating extrusion rollers 2, so that the paper pulp is uniformly pressed and dewatered. Such a feeding mode can ensure the continuity of production and uniformly distribute the paper pulp, so that the local accumulation or vacancy does not occur.

[0040] The working principle of the paper pulp dewatering device is as follows:

[0041] In working, the driving motor drives two extruding rollers 2 to rotate reversely through a chain and gear transmission system to press the middle pulp dry, an adjustable support system is designed inside the extruding rollers 2, another motor drives bevel gear sets through the rotating shafts penetrating the rollers, and then the arc-shaped supporting plates 26 are pushed by the threaded rods 25 to support the roller walls from inside, like a "adjustable inner support" is installed on the rollers, so that the rollers will not deform in high pressure dewatering, one end of the extruding rollers 2 is fixed by a rotating shaft 5, and the other end is supported by a rotating ring 6, to ensure smooth rotation.

[0042] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any skilled person in the art can make many possible changes and modifications to the technical solution of the present application, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of the present application. Therefore, any modification, change and modification made to the above embodiments according to the technical solution of the present application, all belong to the protection scope of the technical solution.

Claims

1. A pulp dewatering device, comprising a housing (1) and two press rolls (2) located inside the housing (1), above which a crushing screw roll (3) is arranged, characterized in that Also include: The drive assembly is provided on the shell (1), the output end of the drive assembly is connected with transmission assembly, the transmission assembly is provided on the shell (1), the transmission assembly is transmission connection with two extrusion roller (2), the drive assembly drives the transmission assembly simultaneously drives two extrusion roller (2) rotates to opposite direction; Power assembly, the power assembly is provided on the shell (1) and is located on the other side of the drive assembly, the output end of the power assembly is connected with output shaft (4), the output shaft (4) penetrates through the shell (1) and extends to the inside of the extrusion roller (2), the output shaft (4) is transmission connection with bevel gear set, the power assembly drives the output shaft (4) drives the bevel gear set rotates; The top support assembly is provided in the inside of the extrusion roller (2), the top support assembly is transmission connection with the bevel gear set of the power assembly, the power assembly drives the top support assembly through the bevel gear set and supports the side wall of the extrusion roller (2).

2. A paper pulp dewatering device according to claim 1, characterized in that One end of the two extrusion roller (2) is fixedly installed with rotating shaft (5), the other end is fixedly installed with rotating ring (6), the rotating shaft (5) and the rotating ring (6) are rotationally connected between the shell (1).

3. A paper pulp dewatering device according to claim 2, characterized in that The drive assembly includes a first motor (7), the first motor (7) is fixedly installed on the side wall of the shell (1), the rotating shaft (5) of two extrusion roller (2) penetrates the side wall of the shell (1), the output end of the first motor (7) is fixedly connected with one of the rotating shaft (5).

4. A paper pulp dewatering device according to claim 3, characterized in that The transmission assembly includes a first transmission shaft (8) and a second transmission shaft (9), the first transmission shaft (8) and the second transmission shaft (9) are rotationally installed on the side wall of the shell (1) and are located between the two rotating shafts (5), the two rotating shafts (5) are on the same horizontal line with the first transmission shaft (8) and the second transmission shaft (9), wherein the rotating shaft (5) connected with the first motor (7) is fixedly installed with a first sprocket (10) outside, a second sprocket (11) is fixedly installed on the outside of the first transmission shaft (8), the first sprocket (10) and the second sprocket (11) are transmission connection through the first chain (12) between them, the first transmission shaft (8) is further fixedly installed with a first gear (13) outside, a second gear (14) is fixedly installed on the outside of the second transmission shaft (9), the first gear (13) and the second gear (14) are engaged with each other, the second transmission shaft (9) is further fixedly installed with a third sprocket (15) outside, another rotating shaft (5) is fixedly installed with a fourth sprocket (16) outside, the third sprocket (15) and the fourth sprocket (16) are transmission connection through the second chain (17) between them.

5. A paper pulp dewatering device according to claim 1, characterized in that The power assembly comprises a second motor (18) fixedly installed on the side wall of the shell (1), an output shaft (4) of the second motor (18) penetrates through the side wall of the shell (1) and the extrusion roller (2) and is rotationally connected with the same, a fixing frame (19) is fixedly installed in the extrusion roller (2), the output shaft (4) penetrates through the fixing frame (19) and is rotationally connected with the same, a first bevel gear (20) is fixedly installed on the outside of the output shaft (4) in the extrusion roller (2), two installation frames (21) are fixedly installed in the extrusion roller (2), the two installation frames (21) are located on the two sides of the first bevel gear (20) respectively, a rotating rod (22) is rotationally connected with each of the two installation frames (21), a second bevel gear (23) and a third bevel gear (24) are fixedly installed on one end of each of the two rotating rods (22) respectively, and the second bevel gear (23) and the third bevel gear (24) are in meshing connection with the first bevel gear (20).

6. A paper pulp dewatering device according to claim 5, characterized in that Threaded blind holes are formed in the end faces of the two rotating rods (22), threaded rods (25) are threadedly connected in the two threaded blind holes, top supporting plates (26) are fixedly installed on one end of the two threaded rods (25) respectively, and the shapes of the two top supporting plates (26) are matched with the inner wall of the extrusion roller (2).

7. A paper pulp dewatering device according to claim 6, characterized in that A guide block (27) is fixedly installed on the inner wall of the extrusion roller (2), and the guide block (27) is located on the two sides of the top supporting plate (26) and is in sliding connection with the top supporting plate (26).

8. A paper pulp dewatering device according to claim 1, characterized in that A feeding pipe (28) is communicated with the lower part of the shell (1), and the feeding pipe (28) is used for conveying paper pulp raw materials into the shell (1).

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