Pollution-free green tube paper squeezing device capable of uniformly dehydrating and reducing difference between two surfaces of paper

Abstract

The invention relates to the technical field of tube paper production, in particular to a pollution-free green tube paper squeezing device capable of achieving uniform dehydration and reducing the difference between two sides of paper, the pollution-free green tube paper squeezing device comprises a waste liquid pool, a top frame is fixedly connected to the outer side of the waste liquid pool, a squeezing assembly is installed at the bottom of the top frame, and a water suction roller is installed on the right side of the squeezing assembly. According to the pollution-free green tube paper squeezing device capable of achieving uniform dehydration and reducing the difference between the two faces of the paper, the waste liquid pool is arranged and used for collecting squeezed waste water so as to facilitate later treatment and discharge, and when the device is used, one end of the paper can penetrate through the squeezing assembly; the paper passes through the top of the water absorption roller and then is input into a subsequent process, in the continuous passing process of the paper, the grinding roller and the water drainage roller rotate reversely, certain output force is provided to pull the paper, meanwhile, the grinding roller extrudes the paper at the top of the water drainage roller, and water in the paper is squeezed and flows down along the spiral water drainage groove.

Description

Technical Field

[0001] The present invention relates to the technical field of tube paper production, and specifically to a pollution-free green tube paper pressing device for uniformly dewatering and reducing the two-sided difference of paper. Background Art

[0002] As is well known, tube paper is a kind of industrial paper specially used for making paper yarn tubes and conical paper tubes in the textile industry. The paper is tough and wear-resistant, the paper surface is smooth and even, and it can resist edge indentation and withstand lathe processing during use. During its production and processing, there is a need for dewatering. In the prior art, most rely on retention aids or defoamers to reduce the water content after pressing, and at the same time perform pressing operations.

[0003] The problems existing in the prior art are as follows: During the processing of tube paper, most of the water in its fibers is pressed out by roller pressing. However, when pressing in this way, the water at the edges of the paper can be quickly discharged from both sides, but when approaching the middle of the paper, the water squeezed out may be difficult to discharge. Therefore, the dewatering performance in the middle is poor and the overall dewatering is uneven. At the same time, when the water is squeezed, it will fall due to gravity and adhere to the surface of the bottom pressing roller, and the downward flowing water may be reabsorbed by the bottom of the paper due to limited adsorption and tension.

[0004] Based on the above-mentioned situation, we found that it is difficult for the tube paper processing devices in the prior art to avoid the above problems at the same time. Therefore, we propose a pollution-free green tube paper pressing device that can perform rapid drainage pressing and secondary pressing separately, and can further perform a water absorption operation on the bottom of the paper after the pressing operation, so as to uniformly dewater and reduce the two-sided difference of the paper. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present invention provides a pollution-free green tube paper pressing device for uniformly dewatering and reducing the two-sided difference of paper, which has the advantages of being able to perform rapid drainage pressing and secondary pressing separately, and being able to further perform a water absorption operation on the bottom of the paper after the pressing operation.

[0007] (II) Technical Solutions

[0008] The above technical object of the present invention is achieved through the following technical solutions: A pollution-free green tube paper pressing device for uniformly dewatering and reducing the two-sided difference of paper, including a waste liquid pool, a top frame is fixedly connected to the outside of the waste liquid pool, a pressing assembly is installed at the bottom of the top frame, and a water absorption roller is installed on the right side of the pressing assembly;

[0009] The water absorption roller includes a hollow inner roller, an inner fixing net is fixedly connected to the outside of the hollow inner roller, a main water absorption blanket is fixedly connected to the outside of the inner fixing net, and a surface layer is provided on the outside of the main water absorption blanket;

[0010] The pressing assembly includes a chassis. An indentation roller and a drainage roller are rotatably connected to the inner side of the chassis. A spiral water drainage groove is formed on the outer side of the drainage roller. An adjustment frame is provided at the bottom of the top frame. A convex roller is rotatably connected to the inner side of the adjustment frame. A rolling roller is provided on the left side of the convex roller. An engagement frame is rotatably connected to the outer side of the rolling roller. The inner side of the engagement frame is rotatably connected to the convex roller. The rear side of the right side of the chassis is rotatably connected to a hollow inner roller.

[0011] With the above technical solution, by providing a waste liquid pool for collecting the wastewater after pressing for subsequent treatment and discharge, the provided pressing assembly is used to directly perform a pressing action on the paper. When in use, one end of the paper can be passed through between the rolling roller and the drainage roller of the pressing assembly, then through between the indentation roller and the convex roller, and input into the subsequent process after passing over the top of the water absorption roller. During the continuous passing of the paper, the rolling roller and the drainage roller rotate in opposite directions to provide a certain output force to traction the paper. At the same time, the rolling roller presses the paper on the top of the drainage roller, and the moisture therein will be pressed out and flow down along the spiral water drainage groove. Compared with pressing through a flat surface, it helps the water to flow down and avoids being difficult to drain and re-attaching to the paper surface. The paper after preliminary pressing will be pressed again by the convex roller and the indentation roller. During this pressing process, the convex and concave curved surfaces form a pressing area. When the paper passes through, it is subjected to a transverse shear force due to the pressing of the curved surface, forcing the moisture to be evenly pressed out, avoiding the problem that the drainage effect is good at both sides of the traditional flat roller but poor in the middle. When the paper passes through the water absorption roller, the continuously rotating top of the water absorption roller will absorb the water at the bottom of the paper through the surface layer and the main water absorption blanket to reduce the water remaining at the bottom of the paper due to gravity. The design of the inner fixing net can facilitate the fixation of the main water absorption blanket and avoid slipping caused by the direct contact between the smooth surface of the hollow inner roller and the main water absorption blanket.

[0012] The present invention is further configured as: the inner fixing net is made of a metal mesh material, the main water absorption blanket is made of a cellulose fiber felt material, the surface layer is made of a nanoscale polyacrylonitrile water absorption film material, and a long groove is formed on the inner side of the hollow inner roller.

[0013] With the above technical solution, by providing an inner fixing net made of a metal mesh material, it can facilitate improving the fixing effect on the main water absorption blanket. The main water absorption blanket made of a cellulose fiber felt material has good water absorption performance and water absorption capacity. The surface layer made of a nanoscale polyacrylonitrile water absorption film material has both water absorption and anti-fiber adhesion functions.

[0014] The present invention is further configured as: a vacuum pump is provided on the front side of the inner wall of the hollow inner roller. The input end of the vacuum pump is fixedly connected to a bent pipe. The front side of the hollow inner roller is installed with an end cover through bolts and nuts. The rear side of the end cover is fixedly connected to the vacuum pump. The front side of the end cover is rotatably connected to the front side of the right side of the chassis.

[0015] With the above technical solution, a vacuum pump is provided to provide vacuum suction. Through the long groove opened in the hollow inner roller, when contacting a wet position, negative pressure can be formed in the pores of the main water absorption blanket, accelerating water migration, improving water absorption efficiency, and reducing the water absorption saturation speed at the same time.

[0016] The present invention is further configured as: a retaining cap is provided at the bottom of the bent pipe, a hydrophobic membrane is provided inside the retaining cap, connecting outer edges are provided on the outer side of the retaining cap and the outer side of the bent pipe near the retaining cap end, and the top connecting outer edge and the bottom connecting outer edge are installed by bolts and nuts.

[0017] With the above technical solution, by providing a hydrophobic membrane in cooperation with the bent pipe, water during suction can be prevented from entering the vacuum pump, and the retaining cap is used for installing or replacing the hydrophobic membrane.

[0018] The present invention is further configured as: connecting protrusions are provided on the front side and the rear side of the outer side of the hollow inner roller, two outer hoops are provided on the outer side of the connecting protrusions, the bottoms of the two outer hoops are rotatably connected by hinges, and the tops of the two outer hoops are connected by bolts and nuts.

[0019] With the above technical solution, by providing connecting protrusions in cooperation with the outer hoops, when it is necessary to load, unload or replace the surface layer, the bolts of the outer hoops can be loosened and opened along the hinges, and replacement can be conveniently carried out. After replacement, it is re-fixed on the outer side of the connecting protrusions to press the surface layer to prevent loosening.

[0020] The present invention is further configured as: first torsion springs are fixedly connected to the front side and the rear side of the adjustment frame, and the side of the first torsion spring away from the adjustment frame is fixedly connected to the connection frame.

[0021] With the above technical solution, by providing the first torsion spring, it is used to connect the adjustment frame and the connection frame, and the connection frame is always under the force of the torsion spring to maintain a downward pressure state for preliminary pressing regardless of the position of the adjustment frame.

[0022] The present invention is further configured as: an adjustment screw rod is threadedly connected to the inside of the top frame, the bottom of the adjustment screw rod is rotatably connected to the adjustment frame, a limiting rod is fixedly connected to the top of the adjustment frame, and the outer side of the limiting rod is slidably connected to the inside of the top frame.

[0023] With the above technical solution, by providing the adjustment screw rod, when it is necessary to adjust the distance between the convex roller and the concave roller according to the thickness of the paper being pressed, it can be completed by rotating the adjustment screw rod. When the adjustment screw rod rotates, the adjustment frame connected thereto will also move vertically under the limitation of the limiting rod.

[0024] The present invention is further configured such that: drive pulleys are fixedly connected to the front sides of the surfaces of the convex roller, the rolling roller, the drainage roller, and the concave roller. The left drive pulley and the right drive pulley are connected by a drive belt. Gears are fixedly connected to the front sides of the surfaces of the convex roller and the concave roller. The top gear and the bottom gear are meshed and connected.

[0025] With the above technical solution, by providing the drive pulleys, it is used to make the convex roller and the rolling roller rotate synchronously. Similarly, the drainage roller and the concave roller rotate synchronously. The gears are used to drive the convex roller and the concave roller, and make their rotation directions opposite.

[0026] The present invention is further configured such that: control motors are fixedly connected to the rear sides of the inner sides of the top frame and the rear side of the bottom frame. The output end of the left control motor is fixedly connected to the rear side of the convex roller. The output end of the right control motor is fixedly connected to the hollow inner roller. The outer side of the convex roller is set in an outwardly convex shape. The outer side of the concave roller is set in an inwardly concave shape that cooperates with the convex roller. Flow guiding grooves are provided on the front side and the rear side of the surface of the concave roller. The bottom of the bottom frame is fixedly connected to the waste liquid pool.

[0027] With the above technical solution, by providing the control motors, it is used to cooperate with the drive pulleys and the gears to drive the convex roller, the rolling roller, the drainage roller, and the concave roller. By providing the flow guiding grooves, the water squeezed out can be discharged and flowed down from the reverse flow grooves.

[0028] The present invention is further configured such that: an electric cylinder is fixedly connected to the inner side of the bottom frame. The telescopic end of the electric cylinder is fixedly connected to a rotating frame. A scraping frame is rotatably connected to the inner side of the rotating frame. A second torsion spring is fixedly connected to the side of the scraping frame close to the rotating frame. The side of the second torsion spring close to the rotating frame is fixedly connected to the rotating frame.

[0029] With the above technical solution, by providing the electric cylinder, it can facilitate pushing the rotating frame and the scraping frame close to the surface layer, and when continuously approaching, it is pressed against the outside of the surface layer through the energy storage of the second torsion spring to scrape off the water therein, so as to facilitate continuous use.

[0030] (III) Beneficial effects

[0031] Compared with the prior art, the present invention provides a pollution-free green tube paper pressing device for uniformly dewatering and reducing the difference between the two sides of the paper, and has the following beneficial effects:

[0032] The pollution-free green tube paper pressing device for uniform dehydration and reduction of the difference between the two sides of paper is equipped with a waste liquid pool to collect the waste water after pressing for later treatment and discharge. The set pressing component is used to directly press the paper. When in use, one end of the paper can be passed between the pressing roller and the drainage roller of the pressing component, and then passed between the concave roller and the convex roller, and passed through the top of the water-absorbing roller and then input into the subsequent process. In the process of continuous passage of the paper, the pressing roller and the drainage roller rotate in opposite directions, providing a certain output force to pull the paper, and at the same time the pressing roller squeezes the paper on the top of the drainage roller, and the water in the paper will be squeezed and flow down along the spiral hydrophobic groove, which is better than passing through the flat surface. The squeezing of the surface can help the water flow down and avoid it being difficult to remove and causing it to re-adhere to the surface of the paper. The paper after the initial squeezing will be squeezed again by the convex and concave rollers. During this squeezing process, the convex and concave surfaces form a squeezing interval. When the paper passes through, it is squeezed by the curved surface to generate lateral shear force, forcing the water to be squeezed out evenly, avoiding the traditional flat roller with good drainage effect on both sides and poor drainage in the middle. When the paper passes through the water-absorbing roller, the top of the continuously rotating water-absorbing roller will absorb the water at the bottom of the paper through the surface layer and the main water-absorbing blanket to reduce the water retained at the bottom of the paper due to gravity. The design of the internal fixed network can facilitate the fixation of the main water-absorbing blanket to avoid slipping caused by direct contact between the smooth hollow inner roller surface and the main water-absorbing blanket. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the main structure of the present invention;

[0034] Figure 2 Schematic diagram of the structure of the pressing assembly of the present invention;

[0035] Figure 3 Schematic diagram of the structure of the hollow inner roller of the present invention;

[0036] Figure 4 Schematic diagram of the structure of the water suction roller in the present invention;

[0037] Figure 5 Schematic diagram of the structure of the curved tube in the present invention;

[0038] Figure 6 Schematic cross-sectional view of the convex roller and the concave roller in the present invention;

[0039] Figure 7 It is a structural schematic diagram of the scraper in the present invention.

[0040] In the figure: 1. Waste liquid pool; 2. Top frame; 3. Pressing assembly; 31. Bottom frame; 32. Concave roller; 33. Drainage roller; 34. Adjusting frame; 35. Convex roller; 36. Rolling roller; 37. Connecting frame; 4. Water absorption roller; 41. Hollow inner roller; 42. Inner fixing net; 43. Main water absorption blanket; 44. Surface layer; 5. Vacuum pump; 6. Bending pipe; 7. End cover; 8. Cap; 9. Hydrophobic membrane; 10. Connecting protrusion; 11. Outer hoop; 12. First torsion spring; 13. Adjusting screw rod; 14. Flow guide groove; 15. Electric cylinder; 16. Rotating frame; 17. Scraping frame; 18. Second torsion spring. Detailed implementation mode

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Embodiment 1

[0043] Please refer to Figures 1-6 , a pollution-free green tube paper pressing device for uniformly dewatering and reducing the difference between the two sides of the paper, including a waste liquid pool 1, a top frame 2 is fixedly connected to the outside of the waste liquid pool 1, a pressing assembly 3 is installed at the bottom of the top frame 2, and a water absorption roller 4 is installed on the right side of the pressing assembly 3;

[0044] The pressing assembly 3 includes a bottom frame 31, a concave roller 32 and a drainage roller 33 are rotatably connected to the inside of the bottom frame 31, a spiral drainage groove is opened on the outside of the drainage roller 33, an adjusting frame 34 is provided at the bottom of the top frame 2, a convex roller 35 is rotatably connected to the inside of the adjusting frame 34, a rolling roller 36 is provided on the left side of the convex roller 35, the outside of the rolling roller 36 is rotatably connected to a connecting frame 37, the inside of the connecting frame 37 is rotatably connected to the convex roller 35, and the rear side of the right side of the bottom frame 31 is rotatably connected to a hollow inner roller 41;

[0045] By setting the waste liquid pool 1, it is used to collect the waste water after pressing for later treatment and discharge. The set pressing assembly 3 is used to directly press the paper. When in use, one end of the paper can pass through between the rolling roller 36 and the drainage roller 33 of the pressing assembly 3, then pass through between the concave roller 32 and the convex roller 35, and pass through the top of the water absorption roller 4 and then input into the subsequent process. During the continuous passing of the paper, the rolling roller 36 and the drainage roller 33 rotate in opposite directions, providing a certain output force to traction the paper, and at the same time, the rolling roller 36 presses the paper on the top of the drainage roller 33, and the water therein will be pressed and flow down along the spiral drainage groove. Compared with pressing through a flat surface, it helps the water to flow down and avoids being difficult to drain and reattaching to the paper surface.

[0046] Wherein, first torsion springs 12 are fixedly connected to both the front side and the rear side of the adjustment frame 34. One side of the first torsion spring 12 away from the adjustment frame 34 is fixedly connected to the connection frame 37. By providing the first torsion spring 12, it is used to connect the adjustment frame 34 and the connection frame 37, and no matter what position the adjustment frame 34 is in, the connection frame 37 is always subjected to the force of the torsion spring to maintain a pressed-down state for preliminary pressing. A threaded connection is provided between the inner side of the top frame 2 and the adjustment screw rod 13. The bottom of the adjustment screw rod 13 is rotatably connected to the adjustment frame 34. A limiting rod is fixedly connected to the top of the adjustment frame 34. The outer side of the limiting rod is slidably connected to the inner side of the top frame 2. By providing the adjustment screw rod 13, when it is necessary to adjust the distance between the convex roller 35 and the concave roller 32 according to the thickness of the paper to be pressed, it can be completed by rotating the adjustment screw rod. When the adjustment screw rod rotates, the connected adjustment frame 34 will also move vertically under the limitation of the limiting rod. Drive pulleys are fixedly connected to the front sides of the surfaces of the convex roller 35, the rolling roller 36, the drainage roller 33, and the concave roller 32. The left drive pulley and the right drive pulley are connected by a drive belt. Gears are fixedly connected to the front sides of the surfaces of the convex roller 35 and the concave roller 32. The top gear and the bottom gear are meshed and connected. By providing the drive pulleys, it is used to make the convex roller 35 and the rolling roller 36 rotate synchronously. Similarly, the drainage roller 33 and the concave roller 32 rotate synchronously. The gears are used to drive the convex roller 35 and the concave roller 32, and make their rotation directions opposite. Control motors are fixedly connected to the rear sides of the inner side of the top frame 2 and the bottom frame 31. The output end of the left control motor is fixedly connected to the rear side of the convex roller 35. The output end of the right control motor is fixedly connected to the hollow inner roller 41. The outer side of the convex roller 35 is set to a convex shape, and the outer side of the concave roller 32 is set to a concave shape that cooperates with the convex roller 35. Flow guide grooves 14 are provided on the front side and the rear side of the surface of the concave roller 32. The bottom of the bottom frame 31 is fixedly connected to the waste liquid pool 1. By providing the control motor, it is used to drive the convex roller 35, the rolling roller 36, the drainage roller 33, and the concave roller 32 in cooperation with the drive pulleys and the gears. By providing the flow guide grooves 14, the water squeezed out can be discharged and flowed down from the reverse flow grooves.

[0047] Working principle of this embodiment: First, adjust the distance between the convex roller 35 and the concave roller 32 through the adjustment screw rod 13, and use the first torsion spring 12 to keep the rolling roller 36 in a pressed-down state. Start the control motor to drive each roller to operate through the drive pulleys and the gears. Pass the paper through the pressing areas between the rolling roller 36 and the drainage roller 33, and between the convex roller 35 and the concave roller 32 in sequence. The rolling roller 36 and the drainage roller 33 rotate in opposite directions to squeeze the moisture on the surface of the paper and discharge it along the spiral drainage grooves. The curved surfaces of the convex roller 35 and the concave roller 32 squeeze to evenly discharge the moisture in the middle of the paper and flow down through the flow guide grooves 14. Finally, when the paper passes through the water absorption roller 4, the surface layer 44 and the main water absorption blanket 43 cooperate with the vacuum pump 5 to negatively adsorb the residual moisture at the bottom, completing uniform dehydration.

[0048] Embodiment 2

[0049] Reference Figures 1-7 , a pollution-free green press device for reducing the two-sided difference of paper by uniform dehydration further includes a water absorption roller 4. Among them, the water absorption roller 4 includes a hollow inner roller 41, an inner fixing net 42 is fixedly connected to the outer side of the hollow inner roller 41, a main water absorption blanket 43 is fixedly connected to the outer side of the inner fixing net 42, and a surface layer 44 is arranged on the outer side of the main water absorption blanket 43;

[0050] The paper after preliminary pressing will be squeezed again by the convex roller 35 and the concave roller 32. During this squeezing process, a pressing area is formed by the convex and concave curved surfaces. When the paper passes through, transverse shear force is generated by the squeezing of the curved surfaces, forcing the water to be evenly pressed out, avoiding the better drainage effect on both sides of the traditional flat roller and the poorer drainage effect in the middle. When the paper passes through the water absorption roller 4, the continuously rotating top of the water absorption roller 4 will absorb the water at the bottom of the paper through the surface layer 44 and the main water absorption blanket 43 to reduce the water remaining at the bottom of the paper due to gravity. The design of the inner fixing net 42 can facilitate the fixing of the main water absorption blanket 43 and avoid slipping caused by the direct contact between the smooth surface of the hollow inner roller 41 and the main water absorption blanket 43.

[0051] Among them, the inner fixing net 42 is made of metal mesh material, the main water-absorbing blanket 43 is made of cellulose fiber felt material, the surface layer 44 is made of nano-scale polyacrylonitrile water-absorbing film material. A long groove is provided on the inner side of the hollow inner roller 41. By setting the inner fixing net 42 made of metal mesh material, it is convenient to improve the fixing effect on the main water-absorbing blanket 43. The main water-absorbing blanket 43 made of cellulose fiber felt material has good water-absorbing performance and water absorption capacity. The surface layer 44 made of nano-scale polyacrylonitrile water-absorbing film material has both water-absorbing and anti-fiber adhesion functions. A vacuum pump 5 is provided on the front side of the inner wall of the hollow inner roller 41. The input end of the vacuum pump 5 is fixedly connected with a bent pipe 6. The front side of the hollow inner roller 41 is installed with an end cover 7 through bolts and nuts. The rear side of the end cover 7 is fixedly connected with the vacuum pump 5. The front side of the end cover 7 is rotatably connected with the front side of the right side of the chassis 31. By setting the vacuum pump 5, vacuum suction can be provided. Through the long groove provided in the hollow inner roller 41, when contacting a wet position, it is convenient to form negative pressure in the internal pores of the main water-absorbing blanket 43, accelerate water migration, improve the water absorption efficiency, and at the same time reduce the water absorption saturation speed. A cap 8 is provided at the bottom of the bent pipe 6. A hydrophobic membrane 9 is provided inside the cap 8. Connecting outer edges are provided on the outer side of the cap 8 and the outer side of the bent pipe 6 near one end of the cap 8. The top connecting outer edge and the bottom connecting outer edge are installed through bolts and nuts. By setting the hydrophobic membrane 9 in cooperation with the bent pipe 6, water during suction can be prevented from entering the vacuum pump 5. The cap 8 is used for installing or replacing the hydrophobic membrane 9. Connecting protrusions 10 are provided on the front and rear sides of the outer side of the hollow inner roller 41. Two outer hoops 11 are provided on the outer side of the connecting protrusions 10. The bottoms of the two outer hoops 11 are rotatably connected through hinges. The tops of the two outer hoops 11 are connected through bolts and nuts. By setting the connecting protrusions 10 in cooperation with the outer hoops 11, when it is necessary to load, unload or replace the surface layer 44, it is convenient to loosen the bolts of the outer hoop 11 and open it along the hinge, and it is convenient to replace it. After replacement, it is re-fixed on the outer side of the connecting protrusion 10 to press the surface layer 44 to prevent loosening. An electric cylinder 15 is fixedly connected to the inner side of the chassis 31. The telescopic end of the electric cylinder 15 is fixedly connected with a rotating frame 16. A scraping frame 17 is rotatably connected to the inner side of the rotating frame 16. A second torsion spring 18 is fixedly connected to the side of the scraping frame 17 close to the rotating frame 16. The side of the second torsion spring 18 close to the rotating frame 16 is fixedly connected with the rotating frame 16. By setting the electric cylinder 15, it is convenient to push the rotating frame 16 and the scraping frame 17 close to the surface layer 44, and when continuously approaching, it is pressed against the outside of the surface layer 44 through the energy storage of the second torsion spring 18 to scrape off the water in it for continuous use.

[0052] Working principle of this embodiment: First, the water absorption roller 4 fixes the main water absorption blanket 43 through the inner fixing net 42 on the outer side of the hollow inner roller 41, and the surface is covered with a nano-level polyacrylonitrile water absorption film surface layer 44. After the paper is subjected to secondary pressing by the convex roller 35 and the concave roller 32, the bottom residual moisture is adsorbed by the top surface layer 44 of the rotating water absorption roller 4 and the main water absorption blanket 43. At the same time, the vacuum pump 5 in the hollow inner roller 41 generates negative pressure through the long groove, so that a negative pressure environment is formed in the pores of the main water absorption blanket 43, accelerating the migration of water to the inside to improve the water absorption efficiency; during the water absorption process, the hydrophobic film 9 in the bent pipe 6 is fixed by the cap 8 to prevent water from entering the vacuum pump 5. When maintenance is required, loosening the bolts of the outer hoop 11 can quickly disassemble the surface layer 44 for replacement; during use, the electric cylinder 15 pushes the rotating frame 16 to make the scraping frame 17 elastically press against the surface layer 44 through the second torsion spring 18 to scrape off the adsorbed water to ensure the continuous and effective operation of the water absorption roller 4.

[0053] This specific embodiment is only an interpretation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pollution-free green press device for tube paper that reduces the two-sided difference of paper by uniform dehydration, comprising a waste liquid pool (1), characterized in that: A top frame (2) is fixedly connected to the outside of the waste liquid pool (1). A pressing assembly (3) is installed at the bottom of the top frame (2). A water absorption roller (4) is installed on the right side of the pressing assembly (3). The water absorption roller (4) includes a hollow inner roller (41). An inner fixing net (42) is fixedly connected to the outside of the hollow inner roller (41). A main water absorption blanket (43) is fixedly connected to the outside of the inner fixing net (42). A surface layer (44) is provided on the outside of the main water absorption blanket (43). The pressing assembly (3) includes a bottom frame (31). A concave roller (32) and a drainage roller (33) are rotatably connected to the inside of the bottom frame (31). A spiral water drainage groove is formed on the outside of the drainage roller (33). An adjusting frame (34) is provided at the bottom of the top frame (2). A convex roller (35) is rotatably connected to the inside of the adjusting frame (34). A rolling roller (36) is provided on the left side of the convex roller (35). The outside of the rolling roller (36) is rotatably connected to a connecting frame (37). The inside of the connecting frame (37) is rotatably connected to the convex roller (35). The rear side of the right side of the bottom frame (31) is rotatably connected to the hollow inner roller (41).

2. The pollution-free green tube paper pressing device for uniformly dehydrating to reduce the two-sided difference of paper according to claim 1, characterized in that: The inner fixing net (42) is made of a metal net material. The main water absorption blanket (43) is made of a cellulose fiber felt material. The surface layer (44) is made of a nano-scale polyacrylonitrile water absorption film material. A long groove is formed on the inside of the hollow inner roller (41).

3. The pollution-free green tube paper pressing device for uniformly dehydrating and reducing the two-sided difference of paper according to claim 2, characterized in that: A vacuum pump (5) is provided on the front side of the inner wall of the hollow inner roller (41). An input end of the vacuum pump (5) is fixedly connected to a bent pipe (6). An end cover (7) is installed on the front side of the hollow inner roller (41) through bolts and nuts. The rear side of the end cover (7) is fixedly connected to the vacuum pump (5). The front side of the end cover (7) is rotatably connected to the front side of the right side of the bottom frame (31).

4. A pollution-free green tube paper pressing device for uniformly dehydrating and reducing the two-sided difference of paper, characterized in that: A clamping cap (8) is provided at the bottom of the bent pipe (6). A hydrophobic film (9) is provided inside the clamping cap (8). Connecting outer edges are provided on the outside of the clamping cap (8) and the outside of one end of the bent pipe (6) close to the clamping cap (8). The top connecting outer edge and the bottom connecting outer edge are installed through bolts and nuts.

5. A pollution-free green tube paper pressing device for uniformly dehydrating and reducing the two-sided difference of paper, characterized in that: Connecting protrusions (10) are provided on the front side and the rear side of the outside of the hollow inner roller (41). Two outer hoops (11) are provided on the outside of the connecting protrusions (10). The bottoms of the two outer hoops (11) are rotatably connected through hinges. The tops of the two outer hoops (11) are connected through bolts and nuts.

6. A pollution-free green tube paper pressing device for uniformly dehydrating and reducing the two-sided difference of paper, characterized in that: First torsion springs (12) are fixedly connected to the front side and the rear side of the adjusting frame (34). One side of the first torsion springs (12) away from the adjusting frame (34) is fixedly connected to the connecting frame (37).

7. A pollution-free green tube paper pressing device for uniformly dehydrating and reducing the two-sided difference of paper, characterized in that: An adjusting screw rod (13) is in threaded connection with the inside of the top frame (2). The bottom of the adjusting screw rod (13) is rotatably connected to the adjusting frame (34). A limiting rod is fixedly connected to the top of the adjusting frame (34). The outside of the limiting rod is slidably connected to the inside of the top frame (2).

8. A pollution-free green tube paper pressing device for uniformly dehydrating and reducing the two-sided difference of paper, characterized in that: A drive pulley is fixedly connected to the front side of the surfaces of the convex roller (35), the rolling roller (36), the drainage roller (33) and the concave roller (32). The left drive pulley and the right drive pulley are connected by a drive belt. A gear is fixedly connected to the front side of the surfaces of the convex roller (35) and the concave roller (32). The top gear and the bottom gear are meshed and connected.

9. A pollution-free green tube paper pressing device for uniformly dehydrating and reducing the two-sided difference of paper, characterized in that: A control motor is fixedly connected to the rear side of the inner side of the top frame (2) and the rear side of the bottom frame (31). The output end of the left control motor is fixedly connected to the rear side of the convex roller (35). The output end of the right control motor is fixedly connected to the hollow inner roller (41). The outer side of the convex roller (35) is set to an outward convex shape. The outer side of the concave roller (32) is set to an inward concave shape that matches the convex roller (35). Flow guide grooves (14) are formed in the front side and the rear side of the surface of the concave roller (32). The bottom of the bottom frame (31) is fixedly connected to the waste liquid pool (1).

10. A pollution-free green press device for tube paper that reduces the two-sided difference of paper by uniform dehydration, characterized in that: An electric cylinder (15) is fixedly connected to the inner side of the bottom frame (31). The telescopic end of the electric cylinder (15) is fixedly connected to a rotating frame (16). A scraping frame (17) is rotatably connected to the inner side of the rotating frame (16). A second torsion spring (18) is fixedly connected to the side of the scraping frame (17) close to the rotating frame (16). The side of the second torsion spring (18) close to the rotating frame (16) is fixedly connected to the rotating frame (16).

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