Pelletizer for reprocessed plastic particles

Abstract

The utility model discloses a pelletizer for reprocessed plastic particles, relates to plastic processing equipment, solves the problem that a cooling pool has a poor cooling effect on strip-shaped plastics, and comprises a screw extruder, a cooling pool and a chopper, the cooling pool is located between the screw extruder and the chopper, the cooling pool is filled with water, and the cooling pool is communicated with the chopper. A plurality of conveying rollers are arranged on the cooling pond, a rotating roller is further arranged at the lower end of each conveying roller, a plurality of rotating plates are arranged on each rotating roller, a control piece for controlling the rotating rollers to rotate when the conveying rollers rotate is arranged on the cooling pond, and the conveying rollers can slide in the horizontal direction. The conveying roller comprises a first abutting roller and a second abutting roller, and has a first use state in which the second abutting roller extends out of the cooling pool and a second use state in which the first abutting roller extends out of the cooling pool. The cooling effect of the cooling pond on the strip-shaped plastic can be improved.

Description

Technical Field

[0001] This application relates to plastic processing equipment, and more particularly to a pelletizer for recycled plastic particles. Background Technology

[0002] If plastic products are burned directly after use, it will have a great impact on the environment. Therefore, used plastic products need to be cleaned and processed to become new plastic raw materials, which are then put into factories for remanufacturing. In the process of manufacturing recycled plastic pellets, processes such as heating, melting, cooling and crushing are involved, and pelletizers are generally used.

[0003] Existing as Figure 1 The invention relates to a pelletizer for recycled plastic particles, comprising a screw extruder 1, a cooling tank 2, and a shredder 3. The cooling tank 2 is installed between the screw extruder 1 and the shredder 3. The screw extruder 1 produces strip-shaped plastic, which is then cooled by cold water in the cooling tank 2 before finally entering the shredder 3 for pelletizing.

[0004] When the front strip of plastic passes through the cold water in the cooling pool 2, the temperature of the water flow near the strip of plastic in the cooling pool 2 increases instantly due to the high temperature of the strip of plastic itself, resulting in a poor cooling effect on the strip of plastic at the rear end. Therefore, the cooling pool 2 has a poor cooling effect on the strip of plastic. Utility Model Content

[0005] To improve the cooling effect of the cooling pool on strip-shaped plastics, this application provides a pelletizer for recycled plastic particles.

[0006] This application provides a pelletizer for recycled plastic particles, which adopts the following technical solution:

[0007] A pelletizer for recycled plastic particles includes a screw extruder, a cooling tank, and a shredder. The cooling tank is located between the screw extruder and the shredder and is filled with water. Several conveying rollers are arranged on the cooling tank, and a rotating roller is arranged at the lower end of each conveying roller. Several rotating plates are arranged on the rotating roller. The cooling tank is equipped with a control component that controls the rotation of the rotating roller when the conveying rollers rotate. The conveying rollers are also capable of sliding in the horizontal direction. The conveying rollers include a first abutting roller and a second abutting roller. The conveying rollers have a first use state in which the second abutting roller extends out of the cooling tank and a second use state in which the first abutting roller extends out of the cooling tank.

[0008] By adopting the above technical solution, the strip-shaped plastic produced by the screw extruder slides towards the shredder under the drive of the conveying roller. Under the action of the control components, the rotating roller starts to rotate, which in turn drives the rotating plate to rotate, thereby causing the water in the cooling tank to flow. The high-temperature water located at the upper end, close to the strip-shaped plastic, mixes with the low-temperature water located at the lower end, away from the strip-shaped plastic, thus achieving the effect of cooling the high-temperature water at the upper end. Simultaneously, the conveying roller is frequently switched between a first and a second operating state: when the first contact roller is heated by the plastic, the conveying roller is adjusted to the second operating state, in which case the first contact roller dissipates heat outside the cooling tank, and the strip-shaped plastic is conveyed through the second contact roller; when the second contact roller is heated by the plastic, the conveying roller is adjusted to the first operating state, in which case the second contact roller dissipates heat outside the cooling tank, and the strip-shaped plastic is conveyed through the first contact roller, further reducing the temperature of the water flow at the strip-shaped plastic. This achieves the effect of improving the cooling effect of the cooling tank on the strip-shaped plastic.

[0009] Optionally, the control component is a rotating belt, which is simultaneously fitted between the conveying roller and the rotating roller.

[0010] By adopting the above technical solution, when the conveyor roller rotates, the rotating roller can rotate along with the conveyor roller under the action of the rotating belt, so as to achieve the effect of the control component driving the rotating roller to rotate.

[0011] Optionally, the rotating roller has a first embedding groove for the rotating belt to be embedded, the first abutting roller has a second embedding groove for the rotating belt to be embedded, and the second abutting roller has a third embedding groove for the rotating belt to be embedded. When the conveying roller is in a first use state, the rotating belt can be embedded in the second embedding groove, and when the conveying roller is in a second use state, the rotating belt can be embedded in the third embedding groove.

[0012] By adopting the above technical solution, when the conveyor roller is in the first use state, the rotating belt is embedded in the first and second embedding grooves, which can reduce the possibility of the rotating belt slipping when the conveyor roller is in the first use state; when the conveyor roller is in the second use state, the rotating belt is embedded in the first and third embedding grooves, which can reduce the possibility of the rotating belt slipping when the conveyor roller is in the second use state.

[0013] Optionally, the cooling pool is provided with a first linkage bar and a second linkage bar, all the first abutting rollers are rotatably connected to the first linkage bar, and all the second abutting rollers are rotatably connected to the second linkage bar.

[0014] By adopting the above technical solution, the movement of all conveyor rollers can be easily controlled through the first or second linkage bar, improving ease of use.

[0015] Optionally, a first fixing screw slides on the first linkage bar, and a first fixing groove adapted to the threaded portion of the first fixing screw is provided on the outer wall of the cooling pool; a second fixing screw slides on the second linkage bar, and a second fixing groove adapted to the threaded portion of the second fixing screw is provided on the outer wall of the cooling pool.

[0016] By adopting the above technical solution, when the conveyor roller is in the first use state, the first fixing screw is controlled to be screwed into the first fixing groove, thereby improving the stability of the conveyor roller in the first use state; when the conveyor roller is in the second use state, the second fixing screw is controlled to be screwed into the second fixing groove, thereby improving the stability of the conveyor roller in the second use state.

[0017] Optionally, the cooling pool is provided with several limiting groups corresponding to the rotating belt. Each limiting group includes two clamping plates, which are located on both sides of the rotating belt along the sliding direction of the conveyor roller.

[0018] By adopting the above technical solution, the possibility of the rotating belt bending when the conveyor roller moves is reduced by clamping it with two clamping plates.

[0019] Optionally, the second embedding groove opening is provided with a first chamfer, and the third embedding groove opening is provided with a second chamfer.

[0020] By adopting the above technical solution, the first chamfer facilitates the rotation of the belt into and out of the second embedding groove, and the second chamfer facilitates the rotation of the belt into and out of the third embedding groove.

[0021] Optionally, the cooling pool is provided with several pressure rollers, which, together with the conveying rollers, hold the strip of plastic.

[0022] By adopting the above technical solution, the possibility of strip plastics warping during transportation can be reduced by using pressure rollers.

[0023] In summary, this application includes at least one of the following beneficial effects:

[0024] 1. When the conveyor roller moves the strip plastic, the rotating plate on the rotating roller can drive the water flow in the cooling pool, which can cool the low temperature water at the bottom and the high temperature water at the top, thus improving the cooling effect of the cooling pool on the strip plastic.

[0025] 2. Switching the conveyor roller between the first and second use states reduces heat on the conveyor roller and further lowers the temperature of the water flow at the strip plastic. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the related technology;

[0027] Figure 2 This is a schematic diagram of the overall structure of this embodiment;

[0028] Figure 3 This is a cross-sectional schematic diagram of the cooling pool in this embodiment;

[0029] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 This is a cross-sectional schematic diagram of the rotating roller and the first abutting roller in this embodiment;

[0031] Figure 6 This is a schematic diagram highlighting the limiting component in this embodiment.

[0032] Explanation of reference numerals in the attached drawings: 1. Screw extruder; 2. Cooling pool; 21. Cooling cavity; 22. Moving groove; 23. First fixed groove; 24. Second fixed groove; 3. Shredder; 4. Conveyor roller; 41. First abutting roller; 411. First rotating disk; 412. Second embedding groove; 4121. First chamfer; 42. Second abutting roller; 421. Second rotating disk; 422. Third embedding groove; 4221. Second chamfer; 5. First linkage. 51. First rotating groove; 52. First movable hole; 6. Second linkage bar; 61. Second rotating groove; 62. Second movable hole; 7. First limiting ring; 8. Second limiting ring; 9. First fixing screw; 10. Second fixing screw; 11. Rotating roller; 111. Rotating plate; 112. First embedding groove; 12. Control component; 121. Rotating belt; 13. Limiting group; 131. Clamping plate; 14. Connecting block; 15. Pressure roller. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 2-6 This application will be described in further detail.

[0034] This application discloses a pelletizer for recycled plastic particles.

[0035] Reference Figure 2 The pelletizer for recycled plastic particles includes a screw extruder 1, a cooling tank 2, and a shredder 3. The cooling tank is located between the screw extruder 1 and the shredder 3. The cooling tank 2 is filled with water. The strip-shaped plastic produced by the screw extruder 1 is cooled by the cooling tank 2 and then transferred to the shredder 3.

[0036] Reference Figure 2 The cooling pool 2 has a cooling cavity 21. Several conveying rollers 4 are installed on the cooling pool 2. The several conveying rollers 4 are evenly arranged along the length of the cooling pool 2. The conveying rollers 4 include a first abutting roller 41 and a second abutting roller 42. A moving groove 22 is provided on the cavity wall of the cooling cavity 21 for the first abutting roller 41 and the second abutting roller 42 to slide.

[0037] Reference Figure 2 The conveying roller 4 has a first use state and a second use state: when the first abutting roller 41 is located inside the cooling pool 2 and the second abutting roller 42 is located outside the cooling pool 2, the conveying roller 4 is in the first use state; when the second abutting roller 42 is located inside the cooling pool 2 and the first abutting roller 41 is located outside the cooling pool 2, the conveying roller 4 is in the second use state.

[0038] Reference Figure 3 and Figure 4 A first linkage bar 5 and a second linkage bar 6 are also installed on the cooling pool 2. The first linkage bar 5 is located on the side of the first abutting roller 41 away from the second abutting roller 42. A first rotating disk 411 is welded to the side of the first abutting roller 41 near the first linkage bar 5. A first rotating groove 51 for the first rotating disk 411 to rotate is opened on the side of the first linkage bar 5 near the first rotating disk 411. A first limiting ring 7 is welded at the opening of the first rotating groove 51. With the cooperation of the first rotating groove 51 and the first rotating disk 411, the first abutting roller 41 is rotatably connected to the first linkage bar 5. Under the restriction of the first limiting ring 7, the possibility of the first abutting roller 41 sliding away from the first linkage bar 5 is reduced.

[0039] Reference Figure 3 and Figure 4 The second linkage bar 6 is located on the side of the second abutting roller 42 away from the first abutting roller 41. A second rotating disk 421 is welded to the side of the second abutting roller 42 near the second linkage bar 6. A second rotating groove 61 for the second rotating disk 421 to rotate is opened on the side of the second linkage bar 6 near the second rotating disk 421. A second limiting ring 8 is welded at the opening of the second rotating groove 61. With the cooperation of the second rotating groove 61 and the second rotating disk 421, the second abutting roller 42 is rotatably connected to the second linkage bar 6. Under the restriction of the second limiting ring 8, the possibility of the second abutting roller 42 sliding away from the second linkage bar 6 is reduced.

[0040] Reference Figure 3 and Figure 4 By pulling the first linkage bar 5 or the second linkage bar 6, the sliding of all conveyor rollers 4 in the first and second use states can be easily controlled.

[0041] Reference Figure 3 and Figure 4A first fixing screw 9 slides on the first linkage bar 5. A first movable hole 52 is provided on the first linkage bar 5 for the first fixing screw 9 to slide. A first fixing groove 23 is provided on the outer wall of the cooling pool 2 to match the threaded part of the first fixing screw 9. When the conveying roller 4 is in the first use state, the first fixing screw 9 is rotated to screw the first fixing screw 9 into the first fixing groove 23 until the fixing screw nut abuts against the first linkage bar 5. At this time, the first linkage bar 5 is fixedly connected to the cooling pool 2, which improves the stability of the conveying roller 4 in the first use state.

[0042] Reference Figure 3 and Figure 4 A second fixing screw 10 slides on the second linkage bar 6, and a second movable hole 62 is provided on the second moving bar for the second fixing screw 10 to slide. A second fixing groove 24 adapted to the threaded part of the second fixing screw 10 is provided on the outer wall of the cooling pool 2. When the conveying roller 4 is in the second use state, the second fixing screw 10 is rotated to screw the second fixing screw 10 into the second fixing groove 24 until the fixing screw nut abuts against the second linkage bar 6. At this time, the second linkage bar 6 is fixedly connected to the cooling pool 2, which improves the stability of the conveying roller 4 in the second use state.

[0043] Reference Figure 4 and Figure 5 A rotating roller 11 is rotatably connected to the cooling pool 2 via a shaft. Several rotating plates 111 are welded to the circumference of the rotating roller 11 shaft. A control component 12, which is a rotating belt 121, is installed on the cooling pool 2. The rotating belt 121 is simultaneously sleeved between the conveying roller 4 and the rotating roller 11. When the conveying roller 4 rotates, the rotating roller 11 begins to rotate under the action of the rotating belt 121, and the rotating plates 111 on the rotating roller 11 drive the water flow in the cooling pool 2.

[0044] Reference Figure 4 and Figure 5 In order to improve the stability of the rotating belt 121 driving the rotating roller 11, a first embedding groove 112 for the rotating belt 121 to be embedded is provided on the rotating roller 11, a second embedding groove 412 for the rotating belt 121 to be embedded is provided on the first abutting roller 41, and a third embedding groove 422 for the rotating belt 121 to be embedded is provided on the second abutting roller 42.

[0045] Reference Figure 4 and Figure 5When the conveyor roller 4 is in the first operating state, the rotating belt 121 can be embedded in the first embedding groove 112 and the second embedding groove 412, and at this time the rotating belt 121 is fixed between the first embedding groove 112 and the second embedding groove 412. When the conveyor roller 4 is in the second operating state, the rotating belt 121 can be embedded in the first embedding groove 112 and the third embedding groove 422, and at this time the rotating belt 121 is fixed between the first embedding groove 112 and the third embedding groove 422.

[0046] Reference Figure 5 and Figure 6 Within the cooling pool 2, a limiting assembly 13 corresponding to the rotating belt 121 is also installed. The limiting assembly 13 includes two clamping plates 131, located on opposite sides of the rotating belt 121 along the sliding direction of the conveyor roller 4. A connecting block 14 is welded between the two clamping plates 131, and one of the clamping plates 131 is welded to the wall of the cooling cavity 21. When the conveyor roller 4 slides horizontally, the clamping plates 131 limit the possibility of the rotating belt 121 bending.

[0047] Reference Figure 4 To prevent the rotating belt 121 from getting stuck in the second embedding groove 412 or the third embedding groove 422, a first chamfer 4121 is provided at the opening of the second embedding groove 412, and a second chamfer 4221 is provided at the opening of the third embedding groove 422.

[0048] Reference Figure 4 and Figure 5 Several pressure rollers 15 are also installed on the cooling pool 2. The pressure rollers 15 are arranged along the length of the cooling pool 2. When the strip plastic is conveyed by the conveying roller 4, the pressure rollers 15 can abut against the upper end of the strip plastic to reduce the possibility of the strip plastic curling up.

[0049] The implementation principle of a granulator for recycled plastic particles according to an embodiment of this application is as follows:

[0050] The screw extruder 1 produces strip-shaped plastic. Then, the conveyor roller 4 drives the strip-shaped plastic towards the shredder 3. As the conveyor roller 4 rotates, under the action of the rotating belt 121, the rotating roller 11 drives the rotating plate 111 to rotate, causing the water in the cooling pool 2 to begin flowing. The high-temperature water located at the upper end, close to the strip-shaped plastic, mixes with the low-temperature water located at the lower end, further away from the strip-shaped plastic, thereby achieving the effect of cooling the high-temperature water at the upper end. Simultaneously, the conveyor roller 4 frequently switches between its first and second operating states, causing the first abutting roller 41 and the second abutting roller 42 to alternately extend outside the cooling pool 2 for cooling, further reducing the temperature of the water flow at the strip-shaped plastic. This improves the cooling effect of the cooling pool 2 on the strip-shaped plastic.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pelletizer for recycled plastic particles, characterized in that: The device includes a screw extruder (1), a cooling pool (2), and a shredder (3). The cooling pool (2) is located between the screw extruder (1) and the shredder (3). The cooling pool (2) is filled with water. Several conveying rollers (4) are provided on the cooling pool (2). A rotating roller (11) is also provided at the lower end of the conveying roller (4). Several rotating plates (111) are provided on the rotating roller (11). A control component (12) is provided on the cooling pool (2) to control the rotation of the rotating roller (11) when the conveying roller (4) rotates. The conveying roller (4) can also slide in the horizontal direction. The conveying roller (4) includes a first abutting roller (41) and a second abutting roller (42). The conveying roller (4) has a first use state in which the second abutting roller (42) extends out of the cooling pool (2) and a second use state in which the first abutting roller (41) extends out of the cooling pool (2).

2. The pelletizer for recycled plastic particles according to claim 1, characterized in that: The control component (12) is a rotating belt (121), which is simultaneously fitted between the conveying roller (4) and the rotating roller (11).

3. The pelletizer for recycled plastic particles according to claim 2, characterized in that: The rotating roller (11) has a first embedding groove (112) for the rotating belt (121) to be embedded in, the first abutting roller (41) has a second embedding groove (412) for the rotating belt (121) to be embedded in, and the second abutting roller (42) has a third embedding groove (422) for the rotating belt (121) to be embedded in. When the conveying roller (4) is in the first use state, the rotating belt (121) can be embedded in the second embedding groove (412), and when the conveying roller (4) is in the second use state, the rotating belt (121) can be embedded in the third embedding groove (422).

4. The pelletizer for recycled plastic particles according to claim 3, characterized in that: The cooling pool (2) is provided with a first linkage bar (5) and a second linkage bar (6). All the first abutting rollers (41) are rotatably connected to the first linkage bar (5), and all the second abutting rollers (42) are rotatably connected to the second linkage bar (6).

5. A pelletizer for recycled plastic particles according to claim 4, characterized in that: A first fixing screw (9) slides on the first linkage bar (5), and a first fixing groove (23) adapted to the threaded part of the first fixing screw (9) is opened on the outer wall of the cooling pool (2). A second fixing screw (10) slides on the second linkage bar (6), and a second fixing groove (24) adapted to the threaded part of the second fixing screw (10) is opened on the outer wall of the cooling pool (2).

6. The pelletizer for recycled plastic particles according to claim 5, characterized in that: The cooling pool (2) is provided with several restriction groups (13) corresponding to the rotating belt (121). The restriction group (13) includes two clamping plates (131), which are located on both sides of the rotating belt (121) along the sliding direction of the conveyor roller (4).

7. A pelletizer for recycled plastic particles according to claim 6, characterized in that: The second embedding groove (412) has a first chamfer (4121) at the opening, and the third embedding groove (422) has a second chamfer (4221) at the opening.

8. A pelletizer for recycled plastic particles according to claim 7, characterized in that: The cooling pool (2) is provided with several pressure rollers (15), and the pressure rollers (15) and the conveying rollers (4) hold the strip of plastic.

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