Granulator for EPE plastic production

Abstract

The utility model relates to the technical field of plastic production, in particular to a pelletizer for EPE plastic production, which comprises a cooling water tank, a screening frame is fixedly connected to the top of the cooling water tank, the cooling water tank is communicated with the screening frame, a pelletizer body is arranged above the screening frame, and the screening frame is communicated with the pelletizer body. The inner wall of one side of the cooling water tank is rotationally connected with two rotating rods which are opposite front and back, and the other ends of the two rotating rods both extend to the outer side of the cooling water tank. According to the device, through output of a first servo motor, a first bevel gear is driven to rotate, the first bevel gear drives a second bevel gear to rotate, the second bevel gear drives a driving belt wheel to rotate, the driving belt wheel drives a driven belt wheel to rotate through a transmission belt, and then two rotating rods are driven to rotate; and the rotating rod drives the stirring rod to rotate, so that the cooled master batches in water are stirred, and a plurality of master batches are prevented from being adhered together to influence the production quality of a product.

Description

Technical Field

[0001] This utility model relates to the field of plastic production technology, and in particular to a granulator for EPE plastic production. Background Technology

[0002] EPE plastic, also known as pearl cotton, is a new type of environmentally friendly packaging material. It is composed of countless independent air bubbles created through the physical foaming process of low-density polyethylene. This overcomes the shortcomings of ordinary foam, such as fragility, deformation, and poor resilience. It possesses numerous advantages, including water and moisture resistance, shock absorption, sound insulation, heat insulation, excellent plasticity, high toughness, recyclability, environmental friendliness, and strong impact resistance. It also has excellent chemical resistance, making it an ideal substitute for traditional packaging materials.

[0003] EPE plastic requires a granulator in the production process. Most existing granulators are equipped with cooling devices at the discharge point to quickly cool the masterbatch in water to prevent it from sticking together. However, when the masterbatch falls into the device, it tends to pile up and stick together, which is not conducive to improving production quality. Utility Model Content

[0004] In view of this, the present invention provides a granulator for EPE plastic production. The main technical problem to be solved is that the masterbatch of existing granulators tends to pile up together when it falls into the cooling device, resulting in sticking and thus hindering the improvement of production quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a granulator for EPE plastic production, comprising a cooling water tank, a screening frame fixedly connected to the top of the cooling water tank, the cooling water tank and the screening frame being connected in communication, a granulator body disposed above the screening frame, two opposing rotating rods rotatably connected to one side of the inner wall of the cooling water tank, the other ends of the two rotating rods extending to the outside of the cooling water tank, a driving pulley fixedly connected to one end of the front rotating rod, a driven pulley fixedly connected to one end of the rear rotating rod, the driving pulley and the driven pulley being connected by a transmission belt, a servo motor fixedly connected to one end of the cooling water tank, a bevel gear fixedly connected to the output end of the servo motor, a bevel gear two meshing with the top of the bevel gear two, the bevel gear two being fixedly connected to the driving pulley, and a stirring rod fixedly connected to the outside of the rotating rods.

[0006] By adopting the above technical solution, the rotating rod, the driving pulley, the driven pulley, the transmission belt, the servo motor, the bevel gear, the bevel gear, and the stirring rod cooperate with each other to stir and separate the cooling masterbatch, preventing them from sticking together.

[0007] As a further description of the above technical solution: the top of the granulator body is fixedly connected to a feed inlet, the top of the feed inlet is provided with a sealing cap, the screening frame is connected to the granulator body through a discharge pipe, and a control valve is provided on the outside of the discharge pipe.

[0008] By adopting the above technical solution, the sealing performance of the granulator body during operation is controlled.

[0009] As a further description of the above technical solution: a screen is provided inside the screening frame, a connecting block is fixedly connected to one end of the screen, the connecting block extends to the outside of the screening frame, a servo motor is fixedly connected to one end of the cooling water tank, a cam is fixedly connected to the output end of the servo motor, a slide rod is fixedly connected to the inner wall of the top of the screening frame, the inner wall of the screen is slidably connected to the outer wall of the slide rod, a limit block is fixedly connected to the bottom end of the slide rod, a spring is provided on the outside of the slide rod, and the two ends of the spring are fixedly connected to the screening frame and the screen, respectively.

[0010] By adopting the above technical solution, the screen, connecting block, servo motor, cam, slide bar, limit block and spring work together to screen the masterbatch before cooling and remove waste particles that do not meet the specifications.

[0011] As a further description of the above technical solution: a purification tank is fixedly connected to one end of the cooling water tank, an air pump is fixedly connected to the inlet of the purification tank, an air suction pipe is fixedly connected to the inlet of the air pump, the other end of the air suction pipe extends into the interior of the granulator body, and an air outlet pipe is fixedly connected to the outlet at the top of the purification tank.

[0012] By adopting the above technical solution, harmful substances in the exhaust gas generated during the operation of the granulator are absorbed and then discharged into the outside world.

[0013] As a further description of the above technical solution: an activated carbon layer is provided inside the purification tank on the upper side of the air intake pipe, an ozone layer is provided on the upper side of the activated carbon layer, and the ozone layer is located below the air outlet pipe.

[0014] By adopting the above technical solutions, harmful substances in the exhaust gas can be absorbed in multiple ways, further ensuring safety.

[0015] As a further description of the above technical solution: multiple support frames are fixedly connected to the top of the screening frame, and the multiple support frames are arranged in a cross shape. The other end of the support frame is fixedly connected to the outer wall of the granulator body.

[0016] By adopting the above technical solutions, the stability of the granulator body during operation is ensured.

[0017] As a further description of the above technical solution: the number of stirring rods is multiple and they are evenly distributed.

[0018] By adopting the above technical solution, the masterbatch in the cooling device is uniformly stirred.

[0019] As a further description of the above technical solution: a water inlet is fixedly connected to one side of the front end of the cooling water tank, a discharge port is provided below the water inlet, and a sealing cover is provided on the outside of the discharge port.

[0020] By adopting the above technical solution, cooling water can be replenished and materials can be discharged from the cooling water tank in a timely manner.

[0021] By employing the above technical solution, the granulator for EPE plastic production of this utility model has at least the following beneficial effects:

[0022] 1. Compared with the existing technology, this granulator for EPE plastic production uses the output of a servo motor to drive a bevel gear to rotate. The bevel gear drives a second bevel gear to rotate, which in turn drives a drive pulley to rotate. The drive pulley drives a driven pulley to rotate via a transmission belt, which in turn drives two rotating rods to rotate. The rotating rods drive a stirring rod to rotate, thus stirring the masterbatch cooled in water and preventing multiple masterbatches from sticking together, which would affect the production quality of the product.

[0023] 2. Compared with existing technologies, this EPE plastic granulator uses an air pump to draw the waste gas generated during the granulator's operation into a purification tank through an air intake pipe. The waste gas is then subjected to dual adsorption treatment by an activated carbon layer and an ozone layer, which adsorbs harmful and irritating substances. Finally, the waste gas is discharged to the outside through an exhaust pipe, preventing environmental pollution and harm to workers. Attached Figure Description

[0024] Figure 1 This is a perspective view of a granulator for EPE plastic production proposed in this utility model;

[0025] Figure 2 This is a perspective view of a granulator for EPE plastic production proposed in this utility model.

[0026] Figure 3 This is a cross-sectional view of the internal structure of the cooling water tank and screening frame of a granulator for EPE plastic production proposed in this utility model.

[0027] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the purification tank of a granulator for EPE plastic production proposed in this utility model.

[0028] Legend:

[0029] 1. Cooling water tank; 2. Screening frame; 3. Granulator body; 4. Rotating rod; 5. Driven pulley; 6. Driven pulley; 7. Transmission belt; 8. Servo motor one; 9. Bevel gear one; 10. Bevel gear two; 11. Stirring rod; 12. Feed inlet; 13. Discharge pipe; 14. Control valve; 15. Screen; 16. Connecting block; 17. Servo motor two; 18. Cam; 19. Slide rod; 20. Limiting block; 21. Spring; 22. Purification tank; 23. Air pump; 24. Inhalation pipe; 25. Exhaust pipe; 26. Activated carbon layer; 27. Ozone layer; 28. Support frame; 29. ​​Water inlet; 30. Discharge outlet. Detailed Implementation

[0030] Reference Figure 1-4 This utility model provides a granulator for EPE plastic production, including a cooling water tank 1 containing cooling water. A screening frame 2 is fixedly connected to the top of the cooling water tank 1 for screening the produced masterbatch. The cooling water tank 1 and the screening frame 2 are connected. A granulator body 3 is located above the screening frame 2 for granulation. Two opposing rotating rods 4 are rotatably connected to one side of the inner wall of the cooling water tank 1, with the other ends of both rods extending to the outside of the cooling water tank 1. A drive pulley 5 is fixedly connected to one end of the front rotating rod 4, and a driven pulley 6 is fixedly connected to one end of the rear rotating rod 4. The drive pulley 5 and the driven pulley 6 are connected by a transmission belt 7. A servo motor 8 is fixedly connected to one end of the cooling water tank 1. A bevel gear 9 is fixedly connected to the output end of servo motor 8. A bevel gear 10 is meshed at the top of bevel gear 9. Bevel gear 10 is fixedly connected to the drive pulley 5. A stirring rod 11 is fixedly connected to the outside of the rotating rod 4. The masterbatch falls into the cooling water tank 1 through the screening frame 2 for cooling. The output of servo motor 8 drives bevel gear 9 to rotate, which in turn drives bevel gear 10 to rotate. Bevel gear 10 drives the drive pulley 5 to rotate, which in turn drives the driven pulley 6 to rotate via the transmission belt 7. This, in turn, drives the two rotating rods 4 to rotate, which in turn drives the stirring rod 11 to rotate, thus stirring the masterbatch being cooled in the water and preventing multiple masterbatches from sticking together, which would affect the production quality of the product.

[0031] The granulator body 3 is fixedly connected to the top of the feed inlet 12. Raw materials are added into the granulator body 3 through the feed inlet 12. The top of the feed inlet 12 is equipped with a sealing cover to ensure the sealing during operation. The screening frame 2 is connected to the granulator body 3 through the discharge pipe 13. A control valve 14 is provided on the outside of the discharge pipe 13. The control valve 14 controls the opening and closing of the discharge pipe 13, thereby sending the masterbatch produced in production into the screening frame 2 for screening.

[0032] The screening frame 2 is equipped with a screen 15, which screens the masterbatch after production to remove non-compliant waste particles. A connecting block 16 is fixedly connected to one end of the screen 15, extending to the outside of the screening frame 2. A servo motor 17 is fixedly connected to one end of the cooling water tank 1, and a cam 18 is fixedly connected to the output end of the servo motor 17. The output of the servo motor 17 drives the cam 18 to rotate. When the cam 18 moves to its highest point, it drives the connecting block 16 to move vertically upward, thereby driving the screen 15. The screen moves vertically upward. A slide rod 19 is fixedly connected to the inner wall of the top of the screening frame 2. The inner wall of the screen 15 is slidably connected to the outer wall of the slide rod 19. A limit block 20 is fixedly connected to the bottom of the slide rod 19. The slide rod 19 and the limit block 20 limit the screen 15. A spring 21 is provided on the outside of the slide rod 19. The two ends of the spring 21 are fixedly connected to the screening frame 2 and the screen 15 respectively. When the cam 18 moves downward, the spring 21 drives the screen 15 to move vertically downward through elastic force. Then the screen 15 moves up and down repeatedly for rapid screening.

[0033] A purification tank 22 is fixedly connected to one end of the cooling water tank 1. The purification tank 22 can treat the exhaust gas. An air pump 23 is fixedly connected to the inlet of the purification tank 22. An air suction pipe 24 is fixedly connected to the inlet of the air pump 23. The other end of the air suction pipe 24 extends into the interior of the granulator body 3. An exhaust pipe 25 is fixedly connected to the outlet of the top of the purification tank 22. Through the output of the air pump 23, the exhaust gas generated during the operation of the granulator body 3 is introduced into the purification tank 22 through the air suction pipe 24 for treatment, and then discharged through the exhaust pipe 25.

[0034] An activated carbon layer 26 is provided inside the purification tank 22 above the intake pipe 24, and an ozone layer 27 is provided above the activated carbon layer 26. The ozone layer 27 is located below the exhaust pipe 25. By setting the activated carbon layer 26 and the ozone layer 27, the exhaust gas can be treated in multiple ways, further ensuring the completeness of adsorption.

[0035] Multiple support frames 28 are fixedly connected to the top of the screening frame 2. The multiple support frames 28 are arranged in a cross shape. The other end of the support frame 28 is fixedly connected to the outer wall of the granulator body 3. The stability of the granulator body 3 during operation is ensured by setting multiple support frames 28.

[0036] The stirring rods 11 are set in multiple and evenly distributed. By setting multiple stirring rods 11, the stirring effect can be better, and the masterbatch inside the cooling water tank 1 can be further guaranteed not to stick together.

[0037] A water inlet 29 is fixedly connected to one side of the front end of the cooling water tank 1. Cooling water can be added to the cooling water tank 1 through the water inlet 29. A discharge port 30 is provided below the water inlet 29. The cooled masterbatch is collected and wastewater is discharged through the discharge port 30. A sealing cover is provided on the outside of the discharge port 30.

[0038] Working principle: Raw materials are added to the granulator body 3 through the feed inlet 12 for granulation. After granulation, the discharge pipe 13 is opened and closed by the control valve 14, thereby sending the produced masterbatch into the screening frame 2 for screening. The output of the servo motor 17 drives the cam 18 to rotate. When the cam 18 moves to the highest point, it drives the connecting block 16 to move vertically upward, which in turn drives the screen 15 to move vertically upward. When the cam 18 moves downward, the spring 21 drives the screen 15 to move vertically downward through its elastic force, and then the screen 15 reciprocates up and down. The masterbatch undergoes rapid screening. After passing through the screening frame 2, it falls into the cooling water tank 1 for cooling. The output of the servo motor 8 drives the bevel gear 9 to rotate, which in turn drives the bevel gear 10 to rotate. The bevel gear 10 drives the drive pulley 5 to rotate, which in turn drives the driven pulley 6 to rotate via the transmission belt 7. This, in turn, drives the two rotating rods 4 to rotate, which in turn drives the stirring rod 11 to rotate. This process stirs the masterbatch being cooled in the water, preventing multiple masterbatches from sticking together and affecting the production quality of the product.

[0039] Through the output of the air pump 23, the waste gas generated during the operation of the granulator body 3 is introduced into the purification tank 22 through the air intake pipe 24 for treatment. By setting the activated carbon layer 26 and the ozone layer 27, the waste gas can be treated in multiple ways before being discharged through the air outlet pipe 25, thus preventing environmental pollution and harm to the health of workers.

[0040] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A granulator for EPE plastic production, comprising a cooling water tank (1), characterized in that: The cooling water tank (1) top fixedly connected with the screening frame (2), the cooling water tank (1) and the screening frame (2) are communicated, the screening frame (2) top is provided with the granulator body (3), the cooling water tank (1) one side inner wall rotatably connected with two front and back opposite rotating rods (4), two the other end of the rotating rod (4) extends to the outside of the cooling water tank (1), the front rotating rod (4) one end is fixedly connected with the driving pulley (5), the rear rotating rod (4) one end is fixedly connected with the driven pulley (6), the driving pulley (5) and the driven pulley (6) are driven by transmission belt (7) transmission connection, the cooling water tank (1) one end is fixedly connected with servo motor one (8), the servo motor one (8) output end is fixedly connected with bevel gear one (9), bevel gear one (9) top meshing is connected with bevel gear two (10), bevel gear two (10) and the driving pulley (5) are fixedly connected, the rotating rod (4) outside is fixedly connected with the stirring rod (11).

2. The granulator for EPE plastic production according to claim 1, characterized in that: The granulator body (3) top end is fixedly connected with the inlet (12), the inlet (12) top is provided with a sealing cover, the screening frame (2) and the granulator body (3) are communicated through the discharge pipe (13), the discharge pipe (13) outside is provided with a control valve (14).

3. The granulator for EPE plastic production according to claim 1, characterized in that: The screening frame (2) is provided with a screen (15) inside, one end of the screen (15) is fixedly connected with a connecting block (16), the connecting block (16) extends to the outside of the screening frame (2), one end of the cooling water tank (1) is fixedly connected with a servo motor two (17), the servo motor two (17) output end is fixedly connected with a cam (18), the top inner wall of the screening frame (2) is fixedly connected with a slide rod (19), the inner wall of the screen (15) is slidably connected with the outer wall of the slide rod (19), the bottom end of the slide rod (19) is fixedly connected with a limiting block (20), the outer side of the slide rod (19) is provided with a spring (21), the two ends of the spring (21) are fixedly connected with the screening frame (2) and the screen (15) respectively.

4. The granulator for EPE plastic production according to claim 1, characterized in that: One end of the cooling water tank (1) is fixedly connected with a purification tank (22), the input port of the purification tank (22) is fixedly connected with an air pump (23), the input end of the air pump (23) is fixedly connected with a suction pipe (24), the other end of the suction pipe (24) extends to the inside of the granulator body (3), the top output port of the purification tank (22) is fixedly connected with an air outlet pipe (25).

5. The granulator for EPE plastic production according to claim 4, characterized in that: The inside of the purification tank (22) is provided with an activated carbon layer (26) above the suction pipe (24), an ozone layer (27) is provided above the activated carbon layer (26), and the ozone layer (27) is below the air outlet pipe (25).

6. The granulator for EPE plastic production according to claim 1, characterized in that: The top of the screening frame (2) is fixedly connected with a plurality of support frames (28), and the plurality of support frames (28) are distributed in a cross shape, and the other end of the support frame (28) is fixedly connected with the outer wall of the granulator body (3).

7. The granulator for EPE plastic production according to claim 1, characterized in that: The number of the stirring rods (11) is multiple and uniformly distributed.

8. The granulator for EPE plastic production according to claim 1, characterized in that: The cooling water tank (1) front end side is fixedly connected with water inlet (29), the water inlet (29) below is provided with discharge port (30), the discharge port (30) outside is provided with sealing cover.

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