A plastic particle softening apparatus

Abstract

The utility model relates to mechanical plasticizing equipment field discloses a kind of plastic granule softening equipment, including transport bin and base, one end of the transport bin is fixedly connected with extrusion bin, main shaft is rotatably connected in the inside of transport bin, the inside of extrusion bin is rotatably connected with the main shaft, the main shaft is fixedly connected with screw outside, the top of one end of the transport bin away from extrusion bin is fixedly connected with feeding bin, the inner wall of feeding bin is provided with sliding slot, the inner wall of sliding slot is slidably connected with filter screen, limit slot is formed in the both ends of filter screen, handle is fixedly connected with the outside of filter screen.In the utility model, when filter screen needs to be cleaned, only need to pull the pull plate to make lock tongue disengage limit slot, then filter screen can be taken out by handle, without complex disassembly operation, greatly shorten the time of filter screen cleaning and replacement, reduce operator's labor intensity, while guaranteeing that particle filtering effect is stable, provide clean raw material for subsequent granule softening treatment.

Description

Technical Field

[0001] This utility model relates to the field of mechanical plasticizing equipment, and in particular to a plastic granule softening device. Background Technology

[0002] Plastic granule softening equipment is mainly used for granule pretreatment before plastic processing and softening treatment in the recycling process of waste plastics. It is widely used in plastic molding industries such as packaging, construction, automobiles, and electronics, as well as resource recycling industries. Its core function is to soften plastic granules uniformly to improve plasticity through the synergistic effect of mechanical conveying and precise temperature control. At the same time, it filters impurities in the granules, stabilizes the conveying of materials, and provides qualified raw materials for subsequent processing steps such as extrusion, injection molding, and molding.

[0003] Currently, plastic granule softening equipment on the market mainly consists of a feeding system, a pressing and conveying system, a discharge structure, a shock-absorbing frame, and a modular transmission system. It mainly achieves uniform granule softening, efficient and stable conveying, compatibility with various subsequent equipment, and reduced maintenance costs and labor intensity through designs such as staggered spiral feeding and multi-dimensional adjustable discharge.

[0004] Existing plastic granule softening equipment often encounters problems during use, such as poor product quality due to impurities mixed in the raw materials. Some models with filters at the feed inlet require frequent and cumbersome filter replacements, which affects work efficiency. The traditional discharge port direction in the equipment is fixed, making it difficult to adapt to different subsequent processing equipment. Therefore, a new plastic granule softening equipment is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a plastic granule softening device, which aims to improve the problems of frequent filter replacement, inconvenient operation, and reduced work efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a plastic granule softening device, comprising a transport chamber and a base, wherein a compression chamber is fixedly connected to one end of the transport chamber, a main shaft is rotatably connected inside the transport chamber, the main shaft is rotatably connected inside the compression chamber, a thread is fixedly connected to the outside of the main shaft, a feeding chamber is fixedly connected to the top of the end of the transport chamber away from the compression chamber, a sliding groove is provided on the inner wall of the feeding chamber, a filter screen is slidably connected to the inner wall of the sliding groove, limit grooves are provided at both ends of the filter screen, a handle is fixedly connected to the outside of the filter screen, and a quick-release assembly is fixedly connected to the outside of the feeding chamber;

[0007] The quick-release assembly includes two outer shells, which are respectively fixedly connected to the outside of the two sides of the feeding bin. A backing plate is slidably connected inside the outer shell, and a locking tongue is fixedly connected inside the backing plate. A spring is sleeved on the outside of the locking tongue, and the locking tongue is inserted into the inside of the limiting groove. A pull plate is fixedly connected to the end of the locking tongue away from the backing plate.

[0008] As a further description of the above technical solution:

[0009] The bottom of the extrusion chamber, away from the transport chamber, is fixedly connected to a discharge pipe. A limit ring is fixedly connected to the outside of the discharge pipe, and a rotating port is rotatably connected to the outer wall of the discharge pipe.

[0010] As a further description of the above technical solution:

[0011] The extrusion chamber is fitted with an electric heating wire, and an insulation shell is fixedly connected to the outside of the extrusion chamber, with the electric heating wire located inside the insulation shell.

[0012] As a further description of the above technical solution:

[0013] The transport compartment and the compression compartment are fixedly connected to the outside of multiple fixed rings. The bottom of each fixed ring is fixedly connected to a support column, and the end of the support column away from the fixed ring is fixedly connected to a base plate.

[0014] As a further description of the above technical solution:

[0015] A sprocket is fixedly connected to one end of the main shaft near the feeding hopper. A motor is fixedly connected to the top of the base. A sprocket is fixedly connected to the output end of the motor. The sprocket and the sprocket are connected by a chain drive.

[0016] As a further description of the above technical solution:

[0017] The inner diameter of the transport chamber and the inner diameter of the compression chamber both tend to decrease.

[0018] As a further description of the above technical solution:

[0019] The threaded sliding connection is on the inner wall of the transport chamber, and the threaded sliding connection is on the inner wall of the extrusion chamber.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, under normal conditions, the locking tongue of the quick-release component cooperates with the limiting groove of the filter screen to lock the position of the filter screen under the action of the spring force. When the filter screen needs to be cleaned, it is only necessary to pull the pull plate to make the locking tongue disengage from the limiting groove, and then the filter screen can be removed by the handle. There is no need for complicated disassembly operations, which greatly shortens the time for cleaning and replacing the filter screen, reduces the labor intensity of operators, and ensures stable particle filtration effect, providing clean raw materials for subsequent particle softening treatment.

[0022] 2. In this utility model, the heating wire sleeved on the outside of the extrusion chamber generates heat after being energized. The heat is transferred to the inside of the extrusion chamber to provide the temperature required for softening the particles. The heat insulation shell outside the extrusion chamber can reduce the heat loss to the outside. At the same time, the inner diameter of the extrusion chamber tends to decrease. With the help of the screw thread to push the particles to move, the particles can be extruded a second time, so that the particles are in closer contact with the heat. This solves the problem of uneven particle softening that is easy to occur in traditional heating and ensures stable particle softening quality. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a plastic granule softening device proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the feeding bin of a plastic granule softening device proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the handle of a plastic granule softening device proposed in this utility model.

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This is a schematic diagram of the limiting ring structure of a plastic granule softening device proposed in this utility model.

[0028] Legend:

[0029] 1. Transport chamber; 2. Extrusion chamber; 3. Heating wire; 4. Insulation shell; 5. Fixing ring; 6. Support column; 7. Base plate; 8. Main shaft; 9. Thread; 10. Sprocket 1; 11. Base; 12. Motor; 13. Sprocket 2; 14. Chain; 15. Feeding chamber; 16. Slide groove; 17. Filter screen; 18. Limiting groove; 19. Handle; 20. Outer shell; 21. Support plate; 22. Spring; 23. Locking tongue; 24. Pull plate; 25. Discharge pipe; 26. Limiting ring; 27. Rotating nozzle. Detailed Implementation

[0030] 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.

[0031] Reference Figures 2-4 This utility model provides an embodiment of a plastic granule softening device, comprising a transport chamber 1 and a base 11. The transport chamber 1 is responsible for conveying the plastic granules. One end of the transport chamber 1 is fixedly connected to an extrusion chamber 2, which is used to extrude the plastic granules conveyed from the transport chamber 1, making the granules easier to contact with heat during subsequent heating and improving softening efficiency. A main shaft 8 is rotatably connected inside the transport chamber 1 and is rotatably connected inside the extrusion chamber 2. A thread 9 is fixedly connected to the outside of the main shaft 8. When the thread 9 rotates with the main shaft 8, it can push the plastic granules in the chamber forward step by step through the spiral structure, preventing the granules from accumulating in the chamber. A feeding chamber 15 is fixedly connected to the top of the end of the transport chamber 1 away from the extrusion chamber 2. The feeding chamber 15 is used for feeding the plastic granules. At the inlet, a groove 16 is provided on the inner wall of the feeding bin 15. The groove 16 provides a sliding mounting track for the filter screen 17. The filter screen 17 is slidably connected to the inner wall of the groove 16. The filter screen 17 is used to filter impurities in the particles fed into the feeding bin 15, preventing impurities from entering subsequent bins and affecting equipment operation or particle softening quality. Limiting grooves 18 are provided at both ends of the filter screen 17. The limiting grooves 18 are used to fix the position of the filter screen 17 in the groove 16. A handle 19 is fixedly connected to the outside of the filter screen 17. The handle 19 provides a force point for the operator to disassemble or install the filter screen 17, making it convenient to quickly remove or install the filter screen 17. A quick-release assembly is fixedly connected to the outside of the feeding bin 15. The quick-release assembly is used to quickly lock or unlock the filter screen 17, reducing the operation steps when cleaning or replacing the filter screen 17.

[0032] The quick-release assembly includes two housings 20, which provide installation space and protection for the internal components of the quick-release assembly. The two housings 20 are fixedly connected to the outside of the two sides of the feeding bin 15. The symmetrical distribution design allows the filter screen 17 to be evenly stressed at both ends. A stop plate 21 is slidably connected inside the housing 20. The stop plate 21 can move axially along the locking tongue 23 inside the housing 20. The locking tongue 23 is fixedly connected inside the stop plate 21. The locking tongue 23 is the core locking component of the quick-release assembly. It can fix and unlock the filter screen 17 by inserting or pulling out the limiting groove 18. A spring 22 is sleeved on the outside of the locking tongue 23 so that the locking tongue 23 is normally inserted into the limiting groove 18 to ensure the stability of the filter screen 17. The locking tongue 23 is inserted into the limiting groove 18 to achieve quick locking. A pull plate 24 is fixedly connected to the end of the locking tongue 23 away from the stop plate 21. The pull plate 24 allows the operator to pull the locking tongue 23 outward. Pulling the pull plate 24 can overcome the elastic force of the spring 22 to unlock the filter screen 17, making the operation convenient.

[0033] Reference Figure 1 , Figure 2 and Figure 5 The bottom of the extrusion chamber 2, away from the transport chamber 1, is fixedly connected to a discharge pipe 25. The discharge pipe 25 is used to discharge the softened and extruded plastic granules from the extrusion chamber 2 and connect them to subsequent processing devices such as an extruder. A limit ring 26 is fixedly connected to the outside of the discharge pipe 25. The limit ring 26 is used to restrict the axial movement of the rotating nozzle 27, ensuring that the rotating nozzle 27 can only rotate around the discharge pipe 25, and preventing it from shifting or falling off. The outer wall of the discharge pipe 25 is rotatably connected to the rotating nozzle 27. The rotating nozzle 27 can be adjusted in orientation according to the feeding position of the subsequent equipment, improving the adaptability of the equipment to different subsequent devices, without the need for additional conveying structures.

[0034] Reference Figures 1-2 The extrusion chamber 2 is fitted with an electric heating wire 3. When the electric heating wire 3 is energized, it generates heat, which raises the internal temperature of the extrusion chamber 2 through heat transfer, providing the heat required for softening the plastic granules. An insulation shell 4 is fixedly connected to the outside of the extrusion chamber 2. The insulation shell 4 can reduce the heat loss of the electric heating wire 3 to the outside, improve heating efficiency, and prevent operators from being burned by contact with high-temperature components. The electric heating wire 3 is located inside the insulation shell 4. This design allows the heat to be applied more concentratedly to the extrusion chamber 2, while protecting the electric heating wire 3 from external dust and impurities, thus extending its service life.

[0035] Reference Figures 1-2Multiple fixing rings 5 ​​are fixedly connected to the outside of the transport chamber 1 and the extrusion chamber 2. The multiple fixing rings 5 ​​respectively encircle and fix the transport chamber 1 and the extrusion chamber 2, which enhances the structural stability of the chamber and prevents the chamber from deforming due to the weight of the internal particles. The bottom of the fixing rings 5 ​​is fixedly connected to the support column 6, which connects the fixing rings 5 ​​to the base plate 7, supports the transport chamber 1 and the extrusion chamber 2, and keeps the chamber at a certain distance from the ground, which facilitates the maintenance of the bottom parts of the equipment. The end of the support column 6 away from the fixing rings 5 ​​is fixedly connected to the base plate 7. The base plate 7 increases the contact area between the equipment and the ground, making the equipment more stable during operation and preventing it from tipping over due to vibration.

[0036] Reference Figures 1-2 A sprocket 10 is fixedly connected to one end of the main shaft 8 near the feeding bin 15. The sprocket 10 receives power and drives the main shaft 8 to rotate, serving as the power input component of the main shaft 8. A motor 12 is fixedly connected to the top of the base 11. The motor 12 is the power source of the equipment, providing power to the entire particle conveying and extrusion system through its operation. A sprocket 2 13 is fixedly connected to the output end of the motor 12. The sprocket 2 13 transmits the rotational power of the motor 12 to the chain 14, serving as the intermediate component for power transmission. The sprocket 10 and the sprocket 2 13 are connected by the chain 14, which enables the power connection between the sprocket 10 and the sprocket 2 13, ensuring that the rotational speed of the motor 12 can be stably transmitted to the main shaft 8, thus ensuring a uniform particle conveying speed.

[0037] Reference Figures 1-2 The inner diameter of the transport chamber 1 tends to decrease. This design allows the plastic granules to be gradually squeezed during the transport process, reducing the gap between the granules and preparing them for further processing after entering the extrusion chamber 2. The inner diameter of the extrusion chamber 2 also tends to decrease, which allows for secondary extrusion of the granules, making the granules more closely contact the heat and improving the uniformity of softening. At the same time, it pushes the granules toward the discharge pipe 25 to avoid stagnation.

[0038] Reference Figures 1-2 The thread 9 is slidably connected to the inner wall of the transport chamber 1. This sliding fit allows the thread 9 to fit tightly against the inner wall of the transport chamber 1, reducing the residue of particles between the chamber wall and the thread 9 and preventing blockage. The thread 9 is slidably connected to the inner wall of the extrusion chamber 2, ensuring that the thread 9 can still stably push the particles in the extrusion chamber 2. Combined with the design of the reduced inner diameter, it assists the extrusion operation and ensures that the particles are smoothly discharged.

[0039] Working principle: The operator feeds plastic granules into the equipment through the feeding bin 15. The granules first enter the filter screen 17 in the slide groove 16 on the inner wall of the feeding bin 15. The filter screen 17 filters the impurities in the granules. At this time, the filter screen 17 is locked to the quick-release assembly on the outside of the feeding bin 15 through the limiting grooves 18 at both ends. The locking tongue 23 is inserted into the limiting groove 18 under the elastic force of the spring 22. When the filter screen 17 needs to be cleaned, simply pull the pull plate 24 to disengage the locking tongue 23 from the limiting groove 18, and then remove the filter screen 17 for cleaning through the handle 19.

[0040] Motor 12 starts running, and its output drives sprocket 13 to rotate. Sprocket 13 is connected to sprocket 10 near the feeding bin 15 of the main shaft 8 via chain 14, thus driving the main shaft 8 to rotate inside the transport bin 1 and the extrusion bin 2. The thread 9 on the outside of the main shaft 8 rotates synchronously with it. Since the thread 9 is slidably connected to the inner walls of the transport bin 1 and the extrusion bin 2 respectively, the rotating thread 9 pushes the filtered plastic granules from the transport bin 1 to the extrusion bin 2. The inner diameter of the transport bin 1 tends to decrease, causing the granules to be initially extruded during the conveying process to reduce the gap between the granules. After entering the extrusion chamber 2, the inner diameter of the extrusion chamber 2 tends to decrease, which performs secondary extrusion on the particles. At the same time, the heating wire 3 on the outside of the extrusion chamber 2 is energized to generate heat. The heat is transferred to the particles inside the extrusion chamber 2 to provide the temperature required for softening. The softened particles are pushed by the thread 9 to the discharge pipe 25 at the bottom of the end of the extrusion chamber 2 away from the transport chamber 1. The limiting ring 26 on the outside of the discharge pipe 25 can restrict the axial movement of the rotating pipe port 27 connected to its outer wall. The operator can adjust the orientation of the rotating pipe port 27 according to the feeding position of the subsequent processing device to ensure that the softened particles are discharged smoothly.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is 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 plastic granule softening device, comprising a transport bin (1) and a base (11), characterized in that: One end of the transport chamber (1) is fixedly connected to the extrusion chamber (2). The transport chamber (1) is rotatably connected to the main shaft (8), which is rotatably connected to the inside of the extrusion chamber (2). The main shaft (8) is fixedly connected to the outside of the main shaft (8) with a thread (9). The top of the transport chamber (1) away from the extrusion chamber (2) is fixedly connected to the feeding chamber (15). The inner wall of the feeding chamber (15) is provided with a sliding groove (16). The inner wall of the sliding groove (16) is slidably connected to a filter screen (17). The filter screen (17) has limit grooves (18) at both ends. The filter screen (17) is fixedly connected to the outside of the filter screen (17) with a handle (19). The feeding chamber (15) is fixedly connected to the outside of the quick-release assembly. The quick-release assembly includes two outer shells (20), which are fixedly connected to the outside of the two sides of the feeding bin (15). A stop plate (21) is slidably connected inside the outer shell (20). A locking tongue (23) is fixedly connected inside the stop plate (21). A spring (22) is sleeved on the outside of the locking tongue (23). The locking tongue (23) is inserted into the inside of the limiting groove (18). A pull plate (24) is fixedly connected to the end of the locking tongue (23) away from the stop plate (21).

2. The plastic granule softening equipment according to claim 1, characterized in that: The bottom of the extrusion chamber (2) away from the transport chamber (1) is fixedly connected to a discharge pipe (25), a limit ring (26) is fixedly connected to the outside of the discharge pipe (25), and a rotating port (27) is rotatably connected to the outer wall of the discharge pipe (25).

3. The plastic granule softening equipment according to claim 1, characterized in that: The extrusion chamber (2) is fitted with an electric heating wire (3) on the outside, and an insulation shell (4) is fixedly connected to the outside of the extrusion chamber (2). The electric heating wire (3) is located inside the insulation shell (4).

4. The plastic granule softening equipment according to claim 1, characterized in that: The transport chamber (1) and the compression chamber (2) are fixedly connected to a plurality of fixed rings (5), and the bottom of the fixed rings (5) is fixedly connected to a support column (6), and the end of the support column (6) away from the fixed rings (5) is fixedly connected to a base plate (7).

5. The plastic granule softening equipment according to claim 1, characterized in that: The main shaft (8) is fixedly connected to a sprocket (10) at one end near the feeding bin (15). The base (11) is fixedly connected to a motor (12). The output end of the motor (12) is fixedly connected to a sprocket (13). The sprocket (10) and the sprocket (13) are connected by a chain (14).

6. The plastic granule softening equipment according to claim 1, characterized in that: The inner diameter of the transport chamber (1) tends to decrease, and the inner diameter of the extrusion chamber (2) tends to decrease.

7. The plastic granule softening equipment according to claim 1, characterized in that: The thread (9) is slidably connected to the inner wall of the transport chamber (1) and the thread (9) is slidably connected to the inner wall of the extrusion chamber (2).

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