A modified pp plastic processing granulator

Abstract

The utility model relates to the technical field of plastics processing, and disclose a granulator for modified PP plastics processing, including base, the top of base is fixedly connected with water tank, the top of water tank is fixedly connected with material cylinder, the top of base is fixedly connected with cooling water tank, the top of base is fixedly connected with water pump, the inner side wall of water pump outlet pipe is fixedly connected with impeller transmission device, the top of base is fixedly connected with four support legs, four the top of support leg is fixedly connected with the granulator, the side wall of cooling water tank is fixedly connected with sieve grain device. This plastics processing granulator can independently set the temperature of cooling water tank, satisfy the actual demand of different materials, recycle cooling water, use hydrodynamic drive sieve grain device, can save resources, improve finished product qualification rate.

Description

Technical Field

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

[0002] Plastic granulators are an indispensable standardized hub in the modern plastics industry. They transform diverse and complex upstream plastic raw materials (including virgin materials, recycled material fragments / powders, modified mixtures, etc.) into standardized granules with uniform size, consistent density, and excellent flowability through core processes such as melting, mixing, homogenization, extrusion, and cutting. This granular form greatly improves the efficiency of material storage and transportation, as well as the stability and efficiency of subsequent automated processing (such as injection molding and extrusion). It is a key link in ensuring the stable performance and reliable quality of plastic products, and is also a core piece of equipment for promoting the circular economy of plastics and realizing the efficient recycling and reuse of waste plastics.

[0003] However, many plastic pelletizing machines use single-temperature zone cooling, which has significant drawbacks. A single temperature zone cannot accurately match the cooling requirements of different raw materials and different process stages. For example, some high-melting-point raw materials require rapid cooling and shaping in the initial stage, while slow cooling is needed later to reduce internal stress. A single temperature zone cannot meet these differentiated requirements, easily leading to problems such as cold spots on the pellet surface, internal pores, or uneven crystallization, affecting the mechanical properties and appearance quality of the product. Simultaneously, single-temperature zone cooling has low efficiency and cannot dynamically adjust the cooling intensity according to production speed, potentially causing over-cooling or under-cooling, increasing energy consumption and reducing production efficiency. During pelletizing, particle size differences may occur due to factors such as tool wear and unstable material flow rate. Failure to screen the pellets will result in mixed pellets, directly affecting downstream processing stages. For example, during injection molding, inconsistent particle sizes may cause uneven melting and plasticization, leading to defects such as uneven wall thickness, shrinkage, and bubbles in the product, and even clogging the mold runner, reducing production efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a granulator for processing modified PP plastics, which has the advantages of zoned cooling, circulating water, and synchronous granulation, thus solving the problems mentioned in the background technology.

[0005] This utility model provides the following technical solution: a granulator for processing modified PP plastic, comprising a base, a water tank fixedly connected to the top of the base, a material cylinder fixedly connected to the top of the water tank, an extrusion die provided on the side of the material cylinder, a motor provided on the other side of the material cylinder, a feed hopper provided on the top of the material cylinder, a cooling water tank fixedly connected to the top of the base, the water tank and the cooling water tank being fixedly connected by a water pipe, a filter provided at the connection between the inner wall of the water tank and the water pipe, a temperature controller provided below the filter, a water temperature detector provided on the inner wall of the water tank, and two fixed plates provided on the top of each of the two side walls of the cooling water tank, with a common rolling element movably sleeved between the two symmetrically arranged fixed plates. Shaft 1: The cooling water tank has two partition plates inside, with flow holes on the two partition plates. A water temperature detector is installed on one side of the bottom surface of the cooling water tank, and a temperature controller is installed on the other side of the bottom surface of the cooling water tank. A water pump is fixedly connected to the top of the base. A water pump inlet pipe is installed on the side wall of the water pump. The water pump is fixedly connected to the water tank through the water pump inlet pipe. A water pump outlet pipe is installed on the side wall of the water pump. The water pump is fixedly connected to the cooling water tank through the water pump outlet pipe. An impeller drive device is fixedly connected to the inner side wall of the water pump outlet pipe. Four support legs are fixedly connected to the top of the base. A pelletizer is fixedly connected above the four support legs. A sieving device is fixedly connected to the side wall of the cooling water tank.

[0006] Preferably, the sieving device includes two symmetrically arranged support plates, a fixed shaft I is fixedly connected between the two support plates, a cam is movably sleeved on the outside of the fixed shaft I, a fixed shaft II is fixedly connected between the two support plates, a movable sleeve shaft is movably sleeved on the outer surface of the fixed shaft II, a connecting plate is driven by the cam, a limiting groove I is formed on the side wall of the connecting plate, a sieving frame is fixedly connected to the side wall of the connecting plate, a sieving plate is provided in the middle of the sieving frame, a finished product outlet is formed on one side of the lower part of the sieving frame, a defective product outlet is formed on the other side of the lower part of the sieving frame, a limiting groove II is formed on the side wall of the sieving frame, a fixed shaft III is movably connected to the limiting groove II, a suspension rod is fixedly connected to the fixed shaft III, and a pelletizer is fixedly connected above the suspension rod.

[0007] Preferably, the impeller drive device includes a fixed frame, a fixed shaft four is fixedly connected to the fixed frame, and an impeller is movably sleeved on the fixed shaft four.

[0008] Preferably, the sidewalls of the cooling water tank are made of a corrosion-resistant and heat-insulating material, and each of the two tanks of the cooling water tank is equipped with a water temperature detector and a temperature controller.

[0009] Preferably, the outer ring of the impeller contains a magnet, and the edge of the cam also contains a magnet. The cam is within the magnetic field range of the magnet contained in the impeller, and the magnet of the impeller acts on the magnet of the cam through magnetic attraction.

[0010] Preferably, the sieving device is inclined and made of lightweight plastic material.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This utility model uses a three-temperature zone cooling system in a water tank, which allows for independent setting of the temperature of different cooling sections, improving efficiency. It can also be modified according to different materials to meet differentiated needs and improve product performance.

[0013] 2. This utility model uses a water pump to circulate cooling water and simultaneously uses water flow to drive an impeller, which in turn drives a cam to drive a sieve device. This saves water and electricity and can also screen out qualified products that meet the requirements, ensuring particle uniformity. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the water tank structure of the granulator of this utility model;

[0016] Figure 3 This is a schematic diagram of the water tank structure of the granulator of this utility model;

[0017] Figure 4 This is a schematic diagram of the granulator sieve structure of the present invention;

[0018] In the diagram: 1. Base; 2. Water tank; 3. Material cylinder; 4. Extrusion die; 5. Motor; 6. Feed hopper; 7. Cooling water tank; 8. Water pipe; 9. Filter; 10. Thermostat 1; 11. Water temperature sensor 1; 12. Fixing plate; 13. Rolling shaft 1; 14. Divider plate; 15. Flow hole; 16. Water temperature sensor 2; 17. Thermostat 2; 18. Water pump; 19. Water pump inlet pipe; 20. Water pump outlet pipe; 21. Support leg; 22. Pelletizer; 23. Support plate; 24. Fixed shaft one; 25. Eccentric cam; 26. Fixed shaft two; 27. Movable sleeve shaft; 28. Connecting plate; 29. ​​Limiting groove one; 30. Pelletizing frame; 31. Pelletizing plate; 32. Finished product outlet; 33. Defective product outlet; 34. Limiting groove two; 35. Fixed shaft three; 36. Suspension rod; 37. Fixing frame; 38. Fixed shaft four; 39. Impeller. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-4 A granulator for processing modified PP plastic includes a base 1. The base 1 is characterized by: a water tank 2 fixedly connected to its upper surface; a material cylinder 3 fixedly connected to the upper surface of the water tank 2; an extrusion mold 4 disposed on the side of the material cylinder 3; a motor 5 disposed on the other side of the material cylinder 3; a feed hopper 6 disposed on the top of the material cylinder 3; a cooling water tank 7 fixedly connected to the upper surface of the base 1; the water tank 2 and the cooling water tank 7 being fixedly connected via a water pipe 8; a filter 9 disposed at the connection between the inner wall of the water tank 2 and the water pipe 8, capable of filtering and purifying the water returning to the water tank 2; a thermostat 10 disposed below the filter 9, regulating the water in the water tank 2 to a set temperature; a water temperature detector 11 disposed on the inner wall of the water tank 2, feeding back the real-time temperature of the cooling water to the thermostat 10; two fixed plates 12 disposed on the upper surface of each of the two side walls of the cooling water tank 7; and a common rolling shaft 13 movably sleeved between the two symmetrically arranged fixed plates 12. The cooling water tank 7 serves a conveying function. It has two partition plates 14 inside, each with a flow hole 15. Surface water from different tanks flows through the flow hole 15. A water temperature detector 16 is installed on one side of the bottom of the cooling water tank 7, and a thermostat 17 is installed on the other side to regulate the temperature of the cooling water. A water pump 18 is fixedly connected to the top of the base 1. A water pump inlet pipe 19 is installed on the side wall of the water pump 18, which is fixedly connected to the water tank 2 via the water pump inlet pipe 19. A water pump outlet pipe 20 is installed on the side wall of the water pump 18, which is fixedly connected to the cooling water tank 7 via the water pump outlet pipe 20. An impeller drive device is fixedly connected to the inner side wall of the water pump outlet pipe 20. Four support legs 21 are fixedly connected to the top of the base 1, and a pelletizer 22 is fixedly connected above the four support legs 21. A sieving device is fixedly connected to the side wall of the cooling water tank 7.

[0021] Please see Figures 1-4The particle screening device includes two symmetrically arranged support plates 23. A fixed shaft 24 is fixedly connected between the two support plates 23. A cam 25 is movably sleeved on the outside of the fixed shaft 24. A second fixed shaft 26 is fixedly connected between the two support plates 23. A movable sleeve shaft 27 is movably sleeved on the outer surface of the second fixed shaft 26. A connecting plate 28 is driven by the cam 25, which can drive the connecting plate 28 to reciprocate. A limit groove 29 is provided on the side wall of the connecting plate 28. A sieve frame 30 is fixedly connected to the side wall of the sieve frame 30. A sieve plate 31 is set in the middle of the sieve frame 30 to screen out qualified plastic particles in reciprocating motion. A finished product outlet 32 ​​is opened on one side of the lower part of the sieve frame 30, and a defective product outlet 33 is opened on the other side of the lower part of the sieve frame 30. A limiting groove 34 is opened on the side wall of the sieve frame 30. A fixed shaft 35 is movably connected to the limiting groove 34. A suspension rod 36 is fixedly connected to the fixed shaft 35. A pelletizer 22 is fixedly connected above the suspension rod 36.

[0022] Please see Figures 1-4 The impeller drive device includes a fixed frame 37, on which a fixed shaft 38 is fixedly connected, and an impeller 39 is movably sleeved on the fixed shaft 38. The water pumped out by the water pump 18 drives the impeller 39 to rotate.

[0023] Please see Figures 1-4 The sidewalls of the cooling water tank 7 are made of corrosion-resistant and heat-insulating materials to ensure that the cooling water temperature in each tank is independent. Both tanks of the cooling water tank 7 are equipped with a water temperature detector 216 and a temperature controller 217, which can set the required temperature separately.

[0024] Please see Figures 1-4 The outer ring of the impeller 39 contains a magnet, and the edge of the cam 25 also contains a magnet. The cam 25 is within the magnetic field range of the magnet contained in the impeller 39. The magnet of the impeller 39 acts on the magnet of the cam 25 through magnetic attraction. When the impeller 39 rotates, it drives the cam 25 to rotate through magnetic force.

[0025] Please see Figures 1-4 The granulation device is inclined so that unqualified plastic granules can be screened out from the defective granule outlet 33, and lightweight plastic materials are used.

[0026] Working principle: When in use, set the temperature of thermostat 10 and the two thermostats 17, start motor 5 and water pump 18. After reaching the set temperature, pour the raw material into the feed hopper 6. The material is extruded from the extrusion die 4 and enters the first cooling water tank 7 for cooling. Place the material on the rolling shaft 13 near the extrusion die 4 and enter the second cooling water tank 7 for cooling. Place the material on the rolling shaft 13 in the middle of the water tank and enter the third cooling water tank 7 for cooling. Then enter the pelletizer 22 for pelletizing. The water flow drives the impeller 39 to rotate, which in turn drives the cam 25 to rotate, causing the granulation device to reciprocate. The plastic pellets pass through the screening plate 31 and are collected from the finished product outlet 32.

[0027] 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 granulator for processing modified PP plastic, comprising a base (1), characterized in that: A water tank (2) is fixedly connected above the base (1), and a material cylinder (3) is fixedly connected above the water tank (2). An extrusion mold (4) is provided on the side of the material cylinder (3), and a motor (5) is provided on the other side of the material cylinder (3). A feed hopper (6) is provided on the top of the material cylinder (3). A cooling water tank (7) is fixedly connected above the base (1). The water tank (2) and the cooling water tank (7) are fixedly connected by a water pipe (8). A filter (9) is provided at the connection between the inner wall of the water tank (2) and the water pipe (8). A temperature controller (10) is provided below the filter (9). A water temperature detector (11) is provided on the inner wall of the water tank (2). Two fixing plates (12) are provided on the upper sides of both sides of the cooling water tank (7). The same rolling shaft (13) is movably sleeved between the two symmetrically arranged fixing plates (12). Two partition plates (14) are provided inside the cooling water tank (7). The two partition plates (14) are provided with flow holes (15). Two water temperature detectors (16) are provided on one side of the bottom surface of the cooling water tank (7), and two temperature controllers (17) are provided on the other side of the bottom surface of the cooling water tank (7). A water pump (18) is fixedly connected to the top of the base (1). A water pump inlet pipe (19) is provided on the side wall of the water pump (18). The water pump (18) and the water tank (2) are fixedly connected through the water pump inlet pipe (19). Next, a water pump outlet pipe (20) is provided on the side wall of the water pump (18). The water pump (18) and the cooling water tank (7) are fixedly connected through the water pump outlet pipe (20). An impeller drive device is fixedly connected to the inner side wall of the water pump outlet pipe (20). Four support legs (21) are fixedly connected above the base (1). A pelletizer (22) is fixedly connected above the four support legs (21). A sieve device is fixedly connected to the side wall of the cooling water tank (7).

2. The granulator for processing modified PP plastic according to claim 1, characterized in that: The sieving device includes two symmetrically arranged support plates (23), a fixed shaft (24) is fixedly connected between the two support plates (23), a cam (25) is movably sleeved on the outside of the fixed shaft (24), a fixed shaft (26) is fixedly connected between the two support plates (23), a movable sleeve shaft (27) is movably sleeved on the outer surface of the fixed shaft (26), a connecting plate (28) is driven by the cam (25), a limit groove (29) is formed on the side wall of the connecting plate (28), and the side wall of the connecting plate (28) is... A sieve frame (30) is fixedly connected. A sieve plate (31) is provided in the middle of the sieve frame (30). A finished product outlet (32) is opened on one side of the lower part of the sieve frame (30). A defective product outlet (33) is opened on the other side of the lower part of the sieve frame (30). A limiting groove (34) is opened on the side wall of the sieve frame (30). A fixed shaft (35) is movably connected to the limiting groove (34). A suspension rod (36) is fixedly connected to the fixed shaft (35). A pelletizer (22) is fixedly connected above the suspension rod (36).

3. The granulator for processing modified PP plastic according to claim 1, characterized in that: The impeller drive device includes a fixed frame (37), a fixed shaft four (38) is fixedly connected to the fixed frame (37), and an impeller (39) is movably sleeved on the fixed shaft four (38).

4. The granulator for processing modified PP plastic according to claim 1, characterized in that: The sidewall of the cooling water tank (7) is made of a corrosion-resistant and heat-insulating material. The two tanks of the cooling water tank (7) are equipped with a water temperature detector (16) and a temperature controller (17).

5. A granulator for processing modified PP plastic according to claim 2, characterized in that: The outer ring of the impeller (39) contains a magnet, and the edge of the cam (25) also contains a magnet. The cam (25) is within the magnetic field range of the magnet contained in the impeller (39), and the magnet of the impeller (39) acts on the magnet of the cam (25) through magnetic attraction.

6. A granulator for processing modified PP plastic according to claim 1, characterized in that: The sieving device is inclined and made of lightweight plastic material.

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