Plastic particle dehydration device

Abstract

The utility model relates to a plastic particle dewatering device, and relates to the field of particle dewatering equipment, the plastic particle dewatering device comprises a dewatering cylinder, a driving unit and a vacuum generation unit, a mixture is fed from a feed port at one end of the dewatering cylinder, a discharge port at the other end of the dewatering cylinder is discharged, and the dewatering cylinder is of a cylindrical structure formed by crossing a plurality of peripheral rods and shaft rods; a plurality of rectangular sieve holes are formed between the ring and the shaft rod, the minimum width of each rectangular sieve hole is smaller than the particle size of particles and equal to the diameter of each circular sieve hole, and the driving unit is used for driving a mixture to move to the dewatering barrel. The vacuum generating unit can enable the pressure outside the dewatering cylinder to be smaller than the pressure inside the dewatering cylinder. The device has the advantages that water films are not prone to being generated by the screen holes, water is not prone to being stored, adhesion between particle sizes is effectively avoided, particle and water are convenient to separate, and the dewatering efficiency of particles is improved.

Description

Technical Field

[0001] This application relates to the field of particle dehydration equipment, and in particular to a plastic particle dehydration device. Background Art

[0002] After plastic particles are pelletized, they are transported through a water pipe. When they are transported to subsequent processing mechanisms, the particles need to be separated from the water. Commonly, a pellet dehydrator is used to separate the pellets from the water.

[0003] In the existing pellet dehydrator, the outer filter screen of the internal rotating structure uses a round-hole filter screen. Due to the surface tension of water, there is always a situation of water retention during the dehydration process of the round filter screen, that is, a part of the water adheres and cannot be thrown out, resulting in limited pellet dehydration and reduced efficiency of pellet dehydration. Summary of the Utility Model

[0004] In order to improve the problem that due to the surface tension of water, there is a situation of water retention during the dehydration process of the round-hole filter screen, resulting in limited pellet dehydration and reduced efficiency of pellet dehydration, this application provides a plastic particle dehydration device.

[0005] A plastic particle dehydration device provided by this application adopts the following technical solutions:

[0006] A plastic particle dehydration device includes a dehydration cylinder, a driving unit, and a vacuum generating unit. The mixed material is fed through the feed port at one end of the dehydration cylinder and discharged through the discharge port at the other end. The dehydration cylinder is a cylindrical structure formed by the intersection of multiple circumferential rods and axial rods. A number of rectangular sieve holes are formed between the circumferential rods and the axial rods. The minimum width of the rectangular sieve holes is smaller than the particle size and equal to the diameter of the round sieve holes. The driving unit is used to drive the mixed material to move onto the dehydration cylinder, and the vacuum generating unit can make the pressure outside the dehydration cylinder less than the pressure inside the dehydration cylinder.

[0007] By adopting the above technical solutions, when dehydrating the particles, the particle-water mixture is input into the dehydration cylinder through the feed port. The driving unit drives the mixed material to move onto the dehydration cylinder. Due to the restriction of the rectangular sieve holes, the particles and water are separated. Since the minimum width of the rectangular sieve holes is equal to that of the round sieve holes, the area of the rectangular sieve holes is larger than that of the round sieve holes. The water film is unevenly distributed in the rectangular sieve holes, and a pressure difference is generated inside and outside the dehydration cylinder through the vacuum generating unit, making it difficult for a water film to form in the rectangular sieve holes and difficult for water to be retained, effectively avoiding adhesion between the particle sizes, facilitating the separation of particles and water, and improving the dehydration efficiency of the pellets.

[0008] In a specific feasible implementation, the circumferential rod and the axial rod are skew lines.

[0009] By adopting the above technical solution, since the circumferential rod and the shaft rod are non-coplanar, the rectangular sieve holes are concave-convex, reducing the generation of water film and improving the convenience of particle-water separation.

[0010] In a specific feasible implementation, a plurality of the circumferential rods and the shaft rods intersect with each other to form a mesh plate, the dehydration cylinder is formed by rolling the mesh plate, and connecting plates are fixedly arranged at both ends of the mesh plate oppositely arranged along the circumferential direction of the dehydration cylinder, and the two connecting plates are detachably connected by bolt members.

[0011] By adopting the above technical solution, by rolling the mesh plate formed by the circumferential rod and the shaft rod into a cylindrical shape and then connecting the two connecting plates by bolt members, it is convenient for the processing and manufacturing of the dehydration cylinder.

[0012] In a specific feasible implementation, an elastic cushion plate is arranged between the two connecting plates.

[0013] By adopting the above technical solution, by arranging the elastic cushion plate, the contact between the two connecting plates is effectively avoided, and the vibration generated when the dehydration cylinder works is reduced.

[0014] In a specific feasible implementation, the driving unit includes a driving motor, a driving shaft, and blade plates. The driving shaft is coaxially and fixedly arranged on the output shaft of the driving motor and inserted into the dehydration cylinder, and the blade plates are fixedly arranged on the driving shaft and used to hit the mixture towards the dehydration cylinder.

[0015] By adopting the above technical solution, when the particle-water mixture enters the dehydration cylinder, the driving motor drives the blade plates to rotate in the dehydration cylinder through the driving shaft, and the blade plates hit the particle-water mixture towards the dehydration cylinder, so that the particle-water separation is carried out, making the particle-water separation more thorough.

[0016] In a specific feasible implementation, the blade plates are inclined from the feed port of the dehydration cylinder towards the discharge port of the dehydration cylinder along the rotation direction of the driving shaft.

[0017] By adopting the above technical solution, the inclined arrangement of the blade plates can make the blade plates push the particles towards the discharge port while hitting the particle-water towards the dehydration cylinder, improving the convenience of particle discharge in the dehydration cylinder.

[0018] In a specific feasible implementation, the vacuum generating unit includes a vacuum pump and a vacuum box. The dehydration cylinder is fixedly arranged in the vacuum box, and both ends of the dehydration cylinder are led to the outside of the vacuum box through pipelines, and the suction port of the vacuum pump is communicated with the vacuum box.

[0019] By adopting the above technical solution, the vacuum pump sucks out the air in the vacuum chamber, creating a pressure difference between the inside of the vacuum chamber and the inside of the dehydration cylinder. While breaking the water film, it can improve the effect of particle-water separation and the particle dehydration efficiency.

[0020] In a specific feasible embodiment, a vacuum tube is arranged in the vacuum chamber along the axial direction of the dehydration cylinder. The suction port of the vacuum pump is communicated with the vacuum tube through a pipeline, and a plurality of through holes are arranged on the vacuum tube along its own axial direction.

[0021] By adopting the above technical solution, with a plurality of through holes arranged on the vacuum tube, it effectively avoids particles from being affected by the vacuum suction port and accumulating at a single position in the dehydration cylinder, blocking the rectangular sieve holes, and improves the uniformity of particle distribution in the dehydration cylinder.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By setting the rectangular sieve holes into a polygonal structure with an area larger than that of the circular sieve holes, the water film is unevenly distributed in the rectangular sieve holes. And by the vacuum generating unit, a pressure difference is generated inside and outside the dehydration cylinder, making it difficult for the water film to form in the rectangular sieve holes and difficult to store water, effectively avoiding adhesion between particle sizes, facilitating the separation of particles and water, and improving the dehydration efficiency of granular materials;

[0024] 2. The driving motor drives the inclined vane to rotate in the dehydration cylinder through the drive shaft, enabling the vane to push the particles towards the discharge port while hitting the particle-water towards the dehydration cylinder, improving the convenience of particle discharge in the dehydration cylinder;

[0025] 3. By arranging a plurality of through holes on the vacuum tube, it effectively avoids particles from being affected by the vacuum suction port and accumulating at a single position in the dehydration cylinder, blocking the rectangular sieve holes, and improves the uniformity of particle distribution in the dehydration cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of a plastic particle dehydration device according to an embodiment of the present application.

[0027] Figure 2 is Figure 1 the enlarged view of part A in

[0028] Figure 3 an exploded view for showing the arrangement of the vane.

[0029] Description of reference numerals: 1. Dewatering cylinder; 11. Feed inlet; 12. Discharge outlet; 13. Screen plate; 131. Peripheral rod; 132. Shaft rod; 14. Rectangular sieve holes; 15. Connecting plate; 16. Rib plate; 17. Elastic cushion plate; 18. Bolt member; 2. Driving unit; 21. Driving motor; 22. Driving shaft; 23. Blade plate; 3. Vacuum generating unit; 31. Vacuum pump; 32. Vacuum box; 33. Vacuum tube; 34. Through hole. Detailed implementation manners

[0030] The following further describes the present application in conjunction with the Figures 1-3 accompanying drawings for a more detailed description.

[0031] An embodiment of the present application discloses a plastic particle dewatering device.

[0032] Referring to Figure 1 , a plastic particle dewatering device includes a dewatering cylinder 1, a driving unit 2, and a vacuum generating unit 3. In this embodiment, the vacuum generating unit 3 includes a vacuum pump 31 and a vacuum box 32. When the suction port of the vacuum pump 31 is communicated with the vacuum box 32, the pressure inside the vacuum box 32 can be reduced, so that the external pressure of the dewatering cylinder 1 is less than the internal pressure. The dewatering cylinder 1 is fixedly arranged in the vacuum box 32 along the vertical direction. The top opening of the dewatering cylinder 1 is the feed inlet 11, and the bottom opening is the discharge outlet 12. Both the feed inlet 11 and the discharge outlet 12 extend to the outside of the vacuum box 32 through pipelines. The particle-water mixture enters the dewatering cylinder 1 from the feed inlet 11, and the particles are discharged from the discharge outlet 12.

[0033] Referring to Figure 1 and Figure 2 , in this embodiment, the dewatering cylinder 1 is a cylindrical structure formed by rolling a screen plate 13 formed by crossing a plurality of peripheral rods 131 and shaft rods 132. Rectangular sieve holes 14 are formed between the peripheral rods 131 and the shaft rods 132. The minimum width of the rectangular sieve holes 14 is equal to the aperture of the circular sieve holes and smaller than the particle size, so that the particle-water is separated when passing through the dewatering cylinder 1. The driving unit 2 is arranged on the vacuum box 32 and extends into the dewatering cylinder 1 to move the particle-water mixture to the dewatering cylinder 1, realizing the separation of the particle-water.

[0034] When dehydrating particles, the particle-water mixture is input into the dehydration cylinder 1 from the feed port 11. The driving unit 2 drives the mixture to move onto the dehydration cylinder 1. Due to the restriction of the rectangular sieve holes 14, the particles and water are separated. Since the minimum width of the rectangular sieve holes 14 is equal to that of the circular sieve holes, the area of the rectangular sieve holes 14 is larger than that of the circular sieve holes. The water film is unevenly distributed in the rectangular sieve holes 14. And by sucking out the air in the vacuum box 32 through the vacuum pump 31, the pressure inside the dehydration cylinder 1 is greater than the external pressure, resulting in the rupture of the water film generated by the rectangular sieve holes under the action of the pressure difference. Thus, the water film is not easily generated in the rectangular sieve holes 14 and is not likely to store water, effectively avoiding adhesion between particle sizes, facilitating the separation of particles and water, and improving the dehydration efficiency of the granular material.

[0035] Refer to Figure 1 、 Figure 2 , the circumferential rod 131 is lapped on the shaft rod 132, making the circumferential rod 131 and the shaft rod 132 non-coplanar. The rectangular sieve holes 14 are concave-convex, reducing the generation of the water film and improving the convenience of particle-water separation. The net plates 13 are fixedly provided with connecting plates 15 on the opposite end walls along the circumferential direction of the dehydration cylinder 1. The connecting plates 15 are arranged along the radial direction of the dehydration cylinder 1. Each connecting plate 15 is fixedly connected to the net plate 13 through a rib plate 16, improving the connection strength between the connecting plate 15 and the net plate 13. An elastic cushion plate 17 is provided between the two connecting plates 15. The two connecting plates 15 are connected by a bolt member 18, and the bolt member 18 passes through the elastic cushion plate 17. By setting the elastic cushion plate 17, the contact between the two connecting plates 15 is effectively avoided, reducing the vibration generated when the dehydration cylinder 1 is working.

[0036] Refer to Figure 1 、 Figure 2 and Figure 3 , in this embodiment, the driving unit 2 includes a driving motor 21, a driving shaft 22 and blade plates 23. The driving motor 21 is fixedly arranged on the vacuum box 32, the output shaft of the driving motor 21 faces the dehydration cylinder 1, the driving shaft 22 is coaxially and fixedly arranged on the output shaft of the driving motor 21 and extends into the dehydration cylinder 1. The blade plates 23 are in two groups, and the two groups of blade plates 23 are evenly arranged along the circumferential direction of the driving shaft 22. The blade plates 23 in each group are arranged at intervals and parallel to each other along the axial direction of the driving shaft 22. Each blade plate 23 is inclined from the feed port 11 of the dehydration cylinder 1 towards the discharge port 12 along the rotation direction of the driving shaft 22.

[0037] When the particle-water mixture enters the dehydration cylinder 1, the driving motor 21 drives the blade plates 23 to rotate in the dehydration cylinder 1 through the driving shaft 22. The blade plates 23 beat the particle-water mixture onto the dehydration cylinder 1, separating the particles and water and making the separation more thorough. The inclined setting of the blade plates 23 enables the blade plates 23 to push the particles towards the discharge port 12 while beating the particle-water mixture onto the dehydration cylinder 1, improving the convenience of particle discharge in the dehydration cylinder 1.

[0038] Reference Figure 1 Figure 1 , a vacuum tube 33 is fixedly arranged in the vacuum box 32 along the axial direction of the dehydration cylinder 1. The vacuum tube 33 is communicated with the suction port of the vacuum pump 31 through a pipeline. A plurality of through holes 34 are formed in the vacuum tube 33, and the through holes 34 are uniformly arranged along the length direction of the vacuum tube 33. By providing a plurality of through holes 34 on the vacuum tube 33, it effectively avoids the particles from being accumulated at a single position in the dehydration cylinder 1 due to the action of the vacuum suction port and blocking the rectangular sieve holes 14, and improves the uniformity of the particle distribution in the dehydration cylinder 1.

[0039] The implementation principle of a plastic particle dehydration device according to an embodiment of the present application is as follows: The particle-water mixture is input into the dehydration cylinder 1 through the feed port 11. The driving motor 21 drives the vane 23 to rotate in the dehydration cylinder 1 through the drive shaft 22. The vane 23 hits the mixture onto the dehydration cylinder 1. Through the limitation of the rectangular sieve holes 14, the separation of particles and water is achieved. Since the minimum width of the rectangular sieve holes 14 is equal to that of the circular sieve holes, the area of the rectangular sieve holes 14 is larger than that of the circular sieve holes. The water film is unevenly distributed in the rectangular sieve holes 14. And the air in the vacuum box 32 is sucked out by the vacuum pump 31, so that the pressure inside the dehydration cylinder 1 is greater than the external pressure, resulting in the rupture of the water film generated by the rectangular sieve holes 14 under the action of the pressure difference. Therefore, the water film is not easily generated in the rectangular sieve holes 14 and is not likely to store water, effectively avoiding the adhesion between particle sizes, facilitating the separation of particles and water, and improving the dehydration efficiency of the granular material.

[0040] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A plastic particle dehydration device, characterized in that: The invention comprises a dehydration cylinder (1), a driving unit (2), and a vacuum generating unit (3); the mixed material is fed into the dehydration cylinder (1) through a feeding port (11) at one end and discharged from a discharging port (12) at the other end; the dehydration cylinder (1) is a cylindrical structure formed by a plurality of circumferential rods (131) and an axial rod (132) intersecting each other; a plurality of rectangular sieve holes (14) are formed between the circumferential rods (131) and the axial rods (132); the minimum width of the rectangular sieve holes (14) is smaller than the particle size of the particles and is equal to the diameter of the circular sieve holes; the driving unit (2) is used to drive the mixed material to move onto the dehydration cylinder (1); and the vacuum generating unit (3) can make the pressure outside the dehydration cylinder (1) smaller than the pressure inside the dehydration cylinder (1).

2. The plastic particle dehydration device according to claim 1, characterized in that: The shaft rod (132) and the peripheral rod (131) are not in the same plane.

3. The plastic particle dehydration device according to claim 1, characterized in that: A plurality of circumferential rods (131) and the shaft rod (132) intersect to form a mesh plate (13), and the dehydration cylinder (1) is formed by rolling the mesh plate (13). Connecting plates (15) are fixedly provided at both ends of the mesh plate (13) which are arranged opposite to each other along the circumference of the dehydration cylinder (1), and the two connecting plates (15) are detachably connected via bolts (18).

4. The plastic particle dehydration device according to claim 3, characterized in that: An elastic pad (17) is provided between the two connecting plates (15).

5. The plastic particle dehydration device according to claim 1, characterized in that: The driving unit (2) comprises a driving motor (21), a driving shaft (22), and a blade (23); the driving shaft (22) is coaxially fixedly arranged on the output shaft of the driving motor (21) and inserted into the dehydration cylinder (1); the blade (23) is fixedly arranged on the driving shaft (22) and is used to drive the mixed material toward the dehydration cylinder (1).

6. The plastic particle dehydration device according to claim 5, characterized in that: The blade (23) is inclined along the rotation direction of the drive shaft (22), from the feed inlet (11) of the dehydration cylinder (1) toward the discharge outlet (12) of the dehydration cylinder (1).

7. The plastic particle dehydration device according to claim 1, characterized in that: The vacuum generating unit (3) comprises a vacuum pump (31) and a vacuum box (32); the dehydration cylinder (1) is fixedly arranged in the vacuum box (32); openings at both ends of the dehydration cylinder (1) are guided to the outside of the vacuum box (32) through pipes; and a suction port of the vacuum pump (31) is connected to the vacuum box (32).

8. The plastic particle dehydration device according to claim 7, characterized in that: A vacuum tube (33) is provided in the vacuum box (32) and is arranged along the axial direction of the dehydration cylinder (1). The suction port of the vacuum pump (31) is connected to the vacuum tube (33) through a pipeline. The vacuum tube (33) is provided with a plurality of through holes (34) arranged along its own axial direction.

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