Modified polyethylene pelletizing apparatus

Abstract

The utility model discloses a modified polyethylene granulating device, including extruder, the top side of extruder is connected with the feed pipe, the top of extruder is away from the other side solid coupling of feed pipe and is connected with the connecting seat, the lateral wall of extruder is solidly connected with the discharge nozzle, the outside of discharge nozzle is provided with the cutter, the number of cutter is two, the top of connecting seat is provided with the moving mechanism, the moving mechanism includes empty case, screw rod, screw block, horizontal column, vertical board and connecting column. The utility model relates to the polyethylene production technical field, and this modified polyethylene granulating device cooperates through empty case, screw rod, screw block, horizontal column, vertical board and connecting column, realizes the quick switching through two cutters, solves the replacement after the long time work of cutter, causes the time of the overall shutdown of device to be relatively long in the cutter replacement process, thereby reduces the problem of the work efficiency of granulating device.

Description

Technical Field

[0001] This utility model relates to the field of polyethylene production technology, specifically to a modified polyethylene granulation device. Background Technology

[0002] Modified polyethylene is a modified polyethylene material with higher strength, heat resistance and wear resistance. Granulation equipment is required in the production of modified polyethylene.

[0003] In traditional granulation equipment, modified polyethylene is extruded through the discharge nozzle of an extruder, and the extruded modified polyethylene strip is cut into granules by a cutter on the discharge nozzle. However, after the cutter has been working for a long time, the anti-stick coating on the cutter surface will wear off, requiring the operator to disassemble the cutter and replace it. After replacement, the modified polyethylene will continue to be pelletized. This results in a relatively long downtime for the entire unit during the cutter replacement process, which reduces the working efficiency of the pelletizing unit. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a modified polyethylene granulation device that solves the problem of prolonged downtime and reduced efficiency of the granulation device caused by the need to replace the cutter after prolonged operation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a modified polyethylene granulation device, comprising an extruder, a feed pipe connected to one side of the top of the extruder, a connecting seat fixedly connected to the other side of the top of the extruder away from the feed pipe, a discharge nozzle fixedly connected to the side wall of the extruder, two cutters provided on the outside of the discharge nozzle, and a moving mechanism provided above the connecting seat; the moving mechanism comprises an empty box, a screw, a threaded block, a horizontal column, a vertical plate, and a connecting column; the empty box is fixedly connected to the top of the connecting seat, the screw is rotatably connected to the inner wall of the empty box via a bearing, the threaded block is threadedly connected to the outer wall of the screw, the horizontal column is fixedly connected to the side wall of the threaded block, the horizontal column penetrates the empty box and is movably connected to the empty box, the vertical plate is fixedly connected to the end of the horizontal column, and the connecting column is fixedly connected to the bottom of the vertical plate.

[0006] Preferably, a support column is fixedly connected to the upper part of the inner wall of the empty box, and a limit plate is fixedly connected to the end of the support column.

[0007] Preferably, a rubber pad is fixedly connected to the side wall of the limiting plate.

[0008] Preferably, a motor is fixedly connected to the side wall of the connecting column, and a rotating shaft is fixedly connected to the output end of the motor. The outer wall of the rotating shaft is rotatably connected to the inner wall of the connecting column via a bearing on the side closest to the motor.

[0009] Preferably, a motor is fixedly connected to the side wall of the connecting column, and an adjustment mechanism is provided on the outside of the rotating shaft; the adjustment mechanism includes a slide, a threaded hole, a bolt, a sleeve, and a protrusion; the slide is respectively opened at the top and bottom of the rotating shaft, and threaded holes are respectively opened on the front and back of the rotating shaft; a sleeve is adjusted on the outer wall of the rotating shaft, the outer wall of the sleeve is fixedly connected to the inner wall of the cutter, a protrusion is fixedly connected to the inner wall of the sleeve, the outer wall of the protrusion is slidably connected to the inner wall of the slide, and a bolt is threadedly connected to the outer wall of the sleeve, and the outer wall of the bolt is threadedly connected to the inner wall of the threaded hole. Beneficial effects

[0010] This invention provides a modified polyethylene granulation device. It offers the following advantages: This modified polyethylene granulation device, through the cooperation of the empty box, screw, threaded block, horizontal column, vertical plate, and connecting column, achieves rapid switching between two cutters. This solves the problem of prolonged downtime and reduced efficiency of the granulation device caused by the need to replace cutters after extended operation.

[0011] By using the cooperation between the slide, threaded hole, bolt, sleeve and protrusion, the distance between the cutter and the discharge nozzle can be adjusted. This solves the problem that when the distance between the cutter and the discharge nozzle is fixed, it is impossible to adjust the distance between them to cut modified polyethylene granules of different lengths, thus reducing the practicality of the granulation device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Exploded view; Figure 3 for Figure 2 Structural diagram of the hollow box, screw, and vertical plate; Figure 4 for Figure 3 A schematic diagram of the structure of the rotating shaft, sleeve, and bolts.

[0013] In the diagram: 1. Extruder; 2. Feed pipe; 3. Discharge nozzle; 4. Connecting seat; 5. Cutter; 6. Empty box; 7. Screw; 8. Threaded block; 9. Horizontal column; 10. Vertical plate; 11. Connecting column; 12. Motor; 13. Rotating shaft; 14. Support column; 15. Limiting plate; 16. Rubber pad; 17. Sleeve; 18. Raised strip; 19. Slide rail; 20. Threaded hole; 21. Bolt. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] After the cutter has been in use for a long time, it needs to be replaced. This results in a long downtime for the entire unit during the cutter replacement process, which reduces the working efficiency of the granulation unit.

[0016] In view of this, the present invention provides a modified polyethylene granulation device, which achieves rapid switching between two cutters through the cooperation between the empty box, screw, threaded block, horizontal column, vertical plate and connecting column. This solves the problem that after the cutter has been working for a long time, it is necessary to replace it, which would cause a long downtime of the entire device during the cutter replacement process, thereby reducing the working efficiency of the granulation device.

[0017] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly introduced below.

[0018] Example 1, by Figure 1-4 It is understood that the modified polyethylene granulation device in this case includes an extruder 1, a feed pipe 2 connected to one side of the top of the extruder 1, a connecting seat 4 fixedly connected to the other side of the top of the extruder 1 away from the feed pipe 2, a discharge nozzle 3 fixedly connected to the side wall of the extruder 1, and two cutters 5 arranged on the outside of the discharge nozzle 3. A moving mechanism is arranged above the connecting seat 4. The moving mechanism includes an empty box 6, a screw 7, a threaded block 8, a horizontal column 9, a vertical plate 10, and a connecting column 11. The empty box 6 is fixedly connected to the top of the connecting seat 4. The inner wall of the empty box 6 is rotatably connected to the screw 7 through a bearing. The outer wall of the screw 7 is threadedly connected to the threaded block 8. The side wall of the threaded block 8 is fixedly connected to the horizontal column 9. The horizontal column 9 passes through the empty box 6 and is movably connected to the empty box 6. The end of the horizontal column 9 is fixedly connected to the vertical plate 10, and the bottom of the vertical plate 10 is fixedly connected to the connecting column 11. In the specific implementation process, it is worth noting that the extruder 1 can be an SJZ-65 type conical twin-screw extruder. During modified polyethylene granulation, the operator feeds the modified polyethylene raw material into the extruder 1 through the feed pipe 2, and then extrudes it through the discharge nozzle 3. Simultaneously, one side cutter 5 rotates to cut the extruded modified polyethylene strip into granules of the specified size. When one cutter 5 needs to be replaced, the operator first stops the extruder 1, then inserts a hex wrench into the groove at the end of the screw 7 and rotates the wrench to rotate the screw 7. The moving threaded block 8 rotates, which drives the horizontal column 9 to move. The horizontal column 9 moves in the empty box 6 and is limited. The horizontal column 9 drives the vertical plate 10 to move. The vertical plate 10 drives the vertical connecting column 11 to move. The connecting column 11 then drives the two cutters 5 to move. The other cutter 5 is moved to the position of the discharge nozzle 3. After completion, the operator stops the wrench and takes it out of the groove. After completion, the operator restarts the extruder 1 to continue granulating the modified polyethylene. At this time, the operator can rotate and replace the worn cutter 5 to achieve quick switching through the two cutters 5. Furthermore, a support column 14 is fixedly connected to the upper inner wall of the empty box 6, and a limit plate 15 is fixedly connected to the end of the support column 14. In the specific implementation process, it is worth noting that when the two cutters 5 move, the threaded block 8 contacts the limiting plate 15. At this time, the operator cannot continue to rotate the screw 7, indicating that the cutter 5 has moved to the working position, thus enabling the operator to move the cutter 5 accurately. Furthermore, a rubber pad 16 is fixedly connected to the side wall of the limiting plate 15; In the specific implementation process, it is worth noting that the rubber pad 16 is made of EPDM rubber. The rubber pad 16 plays a buffering role to prevent rigid contact between the threaded block 8 and the limiting plate 15, and also protects the threaded block 8. Furthermore, a motor 12 is fixedly connected to the side wall of the connecting column 11, and a rotating shaft 13 is fixedly connected to the output end of the motor 12. The outer wall of the rotating shaft 13 is rotatably connected to the inner wall of the connecting column 11 via a bearing on the side close to the motor 12. In the specific implementation process, it is worth noting that there are two motors 12, and the model of motor 12 is Y2-100L1-4. When cutting modified polyethylene, the operator connects the motor 12 on the corresponding cutter 5 to an external power supply. The motor 12 drives the corresponding rotating shaft 13 to rotate, thereby causing the cutter 5 to rotate and cut the extruded modified polyethylene strip. When the cutter 5 needs to be replaced, the operator stops the corresponding motor 12 and replaces it to drive the cutter 5 to rotate.

[0019] Example 2, by Figure 1-4It is known that an adjustment mechanism is provided on the outside of the rotating shaft 13; the adjustment mechanism includes a slide 19, a threaded hole 20, a bolt 21, a sleeve 17 and a protrusion 18; the slide 19 is respectively opened at the top and bottom of the rotating shaft 13, the front and back of the rotating shaft 13 are respectively opened with threaded holes 20, the outer wall of the rotating shaft 13 is adjusted with a sleeve 17, the outer wall of the sleeve 17 is fixed to the inner wall of the cutter 5, the inner wall of the sleeve 17 is fixed to a protrusion 18, the outer wall of the protrusion 18 is slidably connected to the inner wall of the slide 19, the outer wall of the sleeve 17 is threadedly connected with a bolt 21, and the outer wall of the bolt 21 is threadedly connected to the inner wall of the threaded hole 20; In the specific implementation process, it is worth noting that the bolt 21 is made of 304 stainless steel. When it is necessary to cut modified polyethylene granules of different lengths, the operator rotates the bolt 21, and the bolt 21 leaves the threaded hole 20, releasing the sleeve 17 from its fixation. After that, the operator moves the sleeve 17, which drives the convex strip 18 to move. The convex strip 18 moves in the slide 19, and the sleeve 17 drives the cutter 5 to rotate, moving the cutter 5 to the designated position. After that, the operator rotates the bolt 21 again, rotating the bolt 21 into the corresponding threaded hole 20, thereby fixing the position of the cutter 5 and adjusting the distance between the cutter 5 and the discharge nozzle 3.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modified polyethylene granulation apparatus, comprising an extruder (1), characterized in that: The top side of the extruder (1) is connected to a feed pipe (2), and the top side of the extruder (1) away from the feed pipe (2) is fixedly connected to a connecting seat (4). The side wall of the extruder (1) is fixedly connected to a discharge nozzle (3). A cutter (5) is provided on the outside of the discharge nozzle (3). There are two cutters (5). A moving mechanism is provided above the connecting seat (4). The moving mechanism includes an empty box (6), a screw (7), a threaded block (8), a horizontal column (9), a vertical plate (10), and a connecting column (11). The empty box (6) is fixed to the top of the connecting seat (4). The inner wall of the empty box (6) is rotatably connected to a screw (7) via a bearing. The outer wall of the screw (7) is threaded with a threaded block (8). The side wall of the threaded block (8) is fixed with a horizontal column (9). The horizontal column (9) passes through the empty box (6) and is movably connected to the empty box (6). The end of the horizontal column (9) is fixed with a vertical plate (10). The bottom of the vertical plate (10) is fixed with a connecting column (11).

2. The modified polyethylene granulation apparatus according to claim 1, characterized in that: A support column (14) is fixedly connected to the upper part of the inner wall of the empty box (6), and a limit plate (15) is fixedly connected to the end of the support column (14).

3. The modified polyethylene granulation apparatus according to claim 2, characterized in that: A rubber pad (16) is fixedly connected to the side wall of the limiting plate (15).

4. The modified polyethylene granulation apparatus according to claim 1, characterized in that: A motor (12) is fixedly connected to the side wall of the connecting column (11), and a rotating shaft (13) is fixedly connected to the output end of the motor (12). The outer wall of the rotating shaft (13) is rotatably connected to the inner wall of the connecting column (11) via a bearing on the side close to the motor (12).

5. The modified polyethylene granulation apparatus according to claim 4, characterized in that: An adjustment mechanism is provided on the outside of the rotating shaft (13); The adjustment mechanism includes a slide (19), a threaded hole (20), a bolt (21), a sleeve (17), and a protrusion (18). The slide rails (19) are respectively opened at the top and bottom of the rotating shaft (13). The front and back of the rotating shaft (13) are respectively provided with threaded holes (20). The outer wall of the rotating shaft (13) is adjusted with a sleeve (17). The outer wall of the sleeve (17) is fixed to the inner wall of the cutter (5). The inner wall of the sleeve (17) is fixed with a protrusion (18). The outer wall of the protrusion (18) is slidably connected to the inner wall of the slide rail (19). The outer wall of the sleeve (17) is threadedly connected with a bolt (21). The outer wall of the bolt (21) is threadedly connected to the inner wall of the threaded hole (20).

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