PVC particle heating and plasticizing device with precise temperature control function
The PVC granule heating and plasticizing device with precise temperature control solves the problem of component damage caused by workers forgetting to preheat, and achieves stable operation and efficient processing of the extruder.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG BAIYE NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-07-21
AI Technical Summary
During the heating and plasticizing process of PVC granules, workers may forget to turn on the preheating system, which can cause damage to components due to rapid temperature changes and affect the service life of the extruder.
A PVC granule heating and plasticizing device with precise temperature control function was designed, including a transmission structure, an anti-clogging structure and a temperature sensor. It ensures that the extruder automatically opens the feed hopper cover after preheating to avoid use without preheating, and removes metal impurities through the granule stirring rod and magnetic sleeve to prevent the conical feed hopper from clogging.
It effectively avoids component damage caused by lack of preheating, improves the service life and processing quality of the extruder, ensures smooth feeding, and improves heating and plasticizing efficiency.
Smart Images
Figure CN224527941U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of PVC granule plasticizing technology, and more specifically, it relates to a PVC granule heating and plasticizing device with precise temperature control function. Background Technology
[0002] When heating and plasticizing PVC granules, the PVC granules need to be added to the feed hopper of the extruder first. The PVC granules enter the preheating box through the feed hopper and are preheated by the electric heating system. The heated PVC granules enter the extrusion barrel and are gradually heated and plasticized under the push of the screw. The extrusion barrel is generally equipped with multiple heating zones, each of which has an independent thermocouple for temperature detection and feeds the temperature signal back to the control system. The control system uses a PID algorithm to precisely adjust the heating power according to the difference between the set temperature and the actual temperature, so as to achieve precise control of the temperature of each heating zone.
[0003] For example, CN215619295U discloses a drying and feeding machine for a PVC insulation layer extruder for cables. Before heating and plasticizing granular plastic, the outer surface of the granular plastic is dried to remove moisture from the plastic surface, thereby reducing the plasticizing time and further improving the production efficiency of cables. This application includes: the dryer, the blower, the drying tank, and the discharge assembly are all installed on the base plate. The dryer and the blower are connected to the drying tank. The layer mesh assembly is installed inside the drying tank. The base plate is provided with an opening, and the discharge assembly is installed at the opening. The base plate is installed above the discharge box. The dryer is used to deliver hot air into the drying tank, and the blower is used to accelerate the gas flow speed inside the drying tank.
[0004] Based on the above, the preheating system needs to be turned on in advance before using the extruder to ensure that all parts of the extruder reach a stable working temperature. However, in actual operation, operators may forget to turn on the preheating system due to negligence or unfamiliarity with the work process, which may cause some parts to be damaged due to rapid temperature changes and affect the service life of the extruder. Utility Model Content
[0005] To address the aforementioned technical problems, this utility model provides a PVC granule heating and plasticizing device with precise temperature control. This solves the problem that the extruder needs to have its preheating system turned on before use to ensure that all components reach a stable operating temperature. However, in actual operation, operators may forget to turn on the preheating system due to negligence or unfamiliarity with the work process, leading to damage to some components due to rapid temperature changes and affecting the service life of the extruder.
[0006] The purpose and effectiveness of this PVC granule heating and plasticizing device with precise temperature control are achieved through the following specific technical means:
[0007] A PVC granule heating and plasticizing device with precise temperature control includes an extruder base, a granule preheating box, a heated extrusion cylinder, a conical feed hopper, a temperature sensor, a transmission structure, an anti-clogging structure, a transmission connecting shaft, and a feed hopper cover. The granule preheating box is bolted to the upper part of the extruder base. The heated extrusion cylinder is fixedly connected to the left side of the granule preheating box, and multiple heating zones are provided on the inner side of the heated extrusion cylinder, each heating zone being equipped with an independent thermocouple. The conical feed hopper is fixedly connected to the upper part of the granule preheating box. The temperature sensor is located on the front side of the granule preheating box. The transmission structure is located on the front side of the extruder base. The transmission connecting shaft is rotatably connected to the front part of the extruder base. The feed hopper cover is fixedly connected to the upper part of the transmission connecting shaft. The anti-clogging structure is located on the upper part of the conical feed hopper.
[0008] Furthermore, the transmission structure includes a reciprocating self-locking drive component and a limiting mounting sleeve; the reciprocating self-locking drive component is bolted to the lower part of the extruder base, and the control circuit of the temperature sensor is connected in series with the control circuit of the reciprocating self-locking drive component; the limiting mounting sleeve is fixedly connected to the front part of the extruder base, and the limiting mounting sleeve is rotatably connected to the transmission connecting shaft.
[0009] Furthermore, the transmission structure also includes a driving bevel gear and a driven bevel gear; the driving bevel gear is rotatably connected to the lower part of the extruder base, and the output shaft of the reciprocating self-locking drive is coaxially and fixedly connected to the driving bevel gear; the driven bevel gear is fixedly connected to the lower part of the transmission connection shaft, and the driven bevel gear meshes with the driving bevel gear.
[0010] Furthermore, the anti-clogging structure includes a transmission drive component, a transmission mounting shaft, and a synchronous transmission structure; the transmission drive component is bolted to the right side of the conical feed hopper; the transmission mounting shaft is rotatably connected to the middle of the conical feed hopper; the synchronous transmission structure is a synchronous belt drive mechanism, and the transmission mounting shaft is coaxially connected to the output shaft of the transmission drive component through the synchronous transmission structure.
[0011] Furthermore, the anti-clogging structure also includes particle stirring rods and magnetic sleeves; multiple particle stirring rods are provided, and the multiple particle stirring rods are circumferentially arrayed and fixedly connected to the upper part of the transmission mounting shaft; multiple magnetic sleeves are provided, and the multiple magnetic sleeves are respectively fixedly connected to the outside of the multiple particle stirring rods.
[0012] Furthermore, the anti-clogging structure also includes a reciprocating lead screw and a reciprocating nut; the reciprocating lead screw is fixedly connected to the lower part of the transmission mounting shaft; the reciprocating nut is threadedly connected to the lower part of the reciprocating lead screw.
[0013] Furthermore, the anti-clogging structure also includes a dustproof limiting sleeve and a cylindrical connecting rod; the dustproof limiting sleeve is fixedly connected to the upper part of the reciprocating nut, and the dustproof limiting sleeve is slidably connected to the outside of the transmission mounting shaft; the cylindrical connecting rod is rotatably connected to the lower part of the reciprocating nut.
[0014] Furthermore, the anti-clogging structure also includes anti-clogging rods and limiting guide plates; multiple anti-clogging rods are provided, and multiple anti-clogging rods are circumferentially arrayed and fixedly connected to the lower part of the cylindrical connecting rod; the limiting guide plate is fixedly connected to the inner side of the conical feed hopper, and the limiting guide plate is slidably connected to the dustproof limiting sleeve.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] This invention uses a hopper cover plate to shield the conical feed hopper, preventing impurities from falling into the hopper when the extruder is not in use. This effectively eliminates the need to clean the conical feed hopper before use, reducing the workload of operators and improving the extruder's performance. The hopper cover plate automatically opens after the extruder preheats, effectively preventing operation without preheating and ensuring that all components reach a stable operating temperature. This also prevents damage to components due to operators forgetting to turn on the preheating switch, thus extending the extruder's lifespan. The PVC granules are stirred by the action of the granule stirring rod and magnetic sleeve. The magnetic sleeve reduces metallic impurities in the PVC granules, effectively improving product processing quality. An anti-clogging rod unclogs the outlet of the conical feed hopper, effectively preventing bridging caused by excessively rapid PVC granule addition and avoiding clogging that could affect the feeding speed, thereby improving the heating and plasticizing efficiency of the PVC granules. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0018] Figure 2 This is a schematic diagram showing the installation positions of the temperature sensor and the transmission connecting shaft of this utility model.
[0019] Figure 3 This is a schematic diagram showing the meshing relationship between the driving bevel gear and the driven bevel gear of this utility model.
[0020] Figure 4This is a schematic diagram showing the installation positions of the transmission drive component and the transmission mounting shaft of this utility model.
[0021] Figure 5 This is a schematic diagram showing the cooperation relationship between the dustproof limiting sleeve and the limiting guide plate of this utility model.
[0022] Figure 6 This is a schematic diagram showing the disassembled structure of the dustproof limiting sleeve, reciprocating lead screw, and cylindrical connecting rod of this utility model.
[0023] In the diagram, the correspondence between component names and drawing numbers is as follows:
[0024] 1. Extruder base; 101. Reciprocating self-locking drive component; 102. Driving bevel gear; 103. Limiting mounting sleeve; 2. Pellet preheating box; 3. Heated extrusion cylinder; 4. Conical feed hopper; 401. Transmission drive component; 402. Transmission mounting shaft; 403. Synchronous transmission structure; 404. Pellet stirring rod; 405. Magnetic sleeve; 406. Reciprocating lead screw; 407. Reciprocating nut; 408. Dustproof limiting sleeve; 409. Cylindrical connecting rod; 410. Anti-clogging insert rod; 411. Limiting guide plate; 5. Temperature sensor; 6. Transmission connecting shaft; 601. Driven bevel gear; 7. Feed hopper cover plate. Detailed Implementation
[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.
[0026] Example 1:
[0027] As attached Figure 1 To be continued Figure 3 As shown:
[0028] This utility model provides a PVC granule heating and plasticizing device with precise temperature control, including an extruder base 1, a granule preheating box 2, a heated extrusion cylinder 3, a conical feed hopper 4, a temperature sensor 5, a transmission structure, a transmission connecting shaft 6, and a feed hopper cover plate 7; the granule preheating box 2 is bolted to the upper part of the extruder base 1; the heated extrusion cylinder 3 is fixedly connected to the left side of the granule preheating box 2, and multiple heating zones are provided on the inner side of the heated extrusion cylinder 3, each heating zone being equipped with an independent thermocouple; the conical feed hopper 4 is fixedly connected to the upper part of the granule preheating box 2; the temperature sensor 5 is located on the front side of the granule preheating box 2; the transmission structure is located on the front side of the extruder base 1; the transmission connecting shaft 6 is rotatably connected to the front part of the extruder base 1; and the feed hopper cover plate 7 is fixedly connected to the upper part of the transmission connecting shaft 6.
[0029] The transmission structure includes a reciprocating self-locking drive 101 and a limiting mounting sleeve 103; the reciprocating self-locking drive 101 is bolted to the lower part of the extruder base 1, and the control circuit of the temperature sensor 5 is connected in series with the control circuit of the reciprocating self-locking drive 101; the limiting mounting sleeve 103 is fixedly connected to the front part of the extruder base 1, and the limiting mounting sleeve 103 is rotatably connected to the transmission connecting shaft 6.
[0030] The transmission structure also includes a driving bevel gear 102 and a driven bevel gear 601. The driving bevel gear 102 is rotatably connected to the lower part of the extruder base 1, and the output shaft of the reciprocating self-locking drive 101 is coaxially fixedly connected to the driving bevel gear 102. The driven bevel gear 601 is fixedly connected to the lower part of the transmission connecting shaft 6, and the driven bevel gear 601 meshes with the driving bevel gear 102.
[0031] The specific usage and function of this embodiment are as follows: When heating and plasticizing PVC granules, the preheating system is first turned on to raise the temperature of the granule preheating box 2. The temperature sensor 5 monitors the temperature of the granule preheating box 2 in real time. After the temperature of the granule preheating box 2 rises, the temperature sensor 5 sends a signal to the reciprocating self-locking drive 101, causing the reciprocating self-locking drive 101 to rotate and drive the active bevel gear 102 to rotate. When the active bevel gear 102 rotates, it will drive the driven bevel gear 601 and the transmission connecting shaft 6 to rotate along the limiting mounting sleeve 103. When the transmission connecting shaft 6 rotates, it will drive the feed hopper cover plate 7 to rotate. At this time, the conical feed hopper 4 is no longer blocked, and PVC granules can be added into the conical feed hopper 4. The preheated PVC granules enter the heating extrusion cylinder 3 and are plasticized after being heated in different heating zones of the heating extrusion cylinder 3. The temperature is precisely controlled by multiple independent thermocouples and a temperature control system.
[0032] Example 2:
[0033] As attached Figure 4 To be continued Figure 6 As shown:
[0034] Based on Embodiment 1, an anti-clogging structure is also included; the anti-clogging structure is located on the upper part of the conical feed hopper 4.
[0035] The anti-blocking structure includes a transmission drive component 401, a transmission mounting shaft 402, and a synchronous transmission structure 403. The transmission drive component 401 is bolted to the right side of the conical feed hopper 4. The transmission mounting shaft 402 is rotatably connected to the middle of the conical feed hopper 4. The synchronous transmission structure 403 is a synchronous belt drive mechanism, and the transmission mounting shaft 402 is coaxially connected to the output shaft of the transmission drive component 401 through the synchronous transmission structure 403.
[0036] The anti-clogging structure also includes a particle stirring rod 404 and a magnetic sleeve 405; multiple particle stirring rods 404 are provided, and multiple particle stirring rods 404 are fixedly connected to the upper part of the transmission mounting shaft 402 in a circumferential array; multiple magnetic sleeves 405 are provided, and multiple magnetic sleeves 405 are respectively fixedly connected to the outside of multiple particle stirring rods 404.
[0037] The anti-blocking structure also includes a reciprocating lead screw 406 and a reciprocating nut 407; the reciprocating lead screw 406 is fixedly connected to the lower part of the transmission mounting shaft 402; the reciprocating nut 407 is threadedly connected to the lower part of the reciprocating lead screw 406.
[0038] The anti-blocking structure also includes a dustproof limiting sleeve 408 and a cylindrical connecting rod 409; the dustproof limiting sleeve 408 is fixedly connected to the upper part of the reciprocating nut 407, and the dustproof limiting sleeve 408 is slidably connected to the outside of the transmission mounting shaft 402; the cylindrical connecting rod 409 is rotatably connected to the lower part of the reciprocating nut 407.
[0039] The anti-blocking structure also includes an anti-blocking rod 410 and a limiting guide plate 411; multiple anti-blocking rods 410 are provided, and multiple anti-blocking rods 410 are fixedly connected to the lower part of the cylindrical connecting rod 409 in a circumferential array; the limiting guide plate 411 is fixedly connected to the inner side of the conical feed hopper 4, and the limiting guide plate 411 is slidably connected to the dustproof limiting sleeve 408.
[0040] The specific usage and function of this embodiment are as follows: When adding PVC granules, the transmission drive 401 is activated. Under the action of the synchronous transmission structure 403, the transmission drive 401 drives the transmission mounting shaft 402 to rotate. When the transmission mounting shaft 402 rotates, it drives the granule stirring rod 404 and the magnetic sleeve 405 to rotate, stirring the PVC granules added to the conical feed hopper 4. The magnetic sleeve 405 can adsorb the metal impurities mixed in the PVC granules. When the transmission mounting shaft 402 rotates, it drives the reciprocating screw 406 to rotate. The rotation of the reciprocating screw 406 causes the reciprocating nut 407 to drive the dustproof limit sleeve 408 to slide up and down along the limit guide plate 411. At this time, the cylindrical connecting rod 409 and the anti-blocking insert 410 will move with the reciprocating nut 407 to clear the discharge port of the conical feed hopper 4.
[0041] The following points should be noted in this article:
[0042] 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.
[0043] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.
[0044] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.
Claims
1. A PVC granule heating and plasticizing device with precise temperature control function, comprising an extruder base (1), a granule preheating box (2), a heated extrusion cylinder (3), a conical feed hopper (4), a temperature sensor (5), a transmission structure, an anti-blocking structure, a transmission connecting shaft (6), and a feed hopper cover plate (7); the granule preheating box (2) is bolted to the upper part of the extruder base (1); the heated extrusion cylinder (3) is fixedly connected to the left side of the granule preheating box (2), and the inner side of the heated extrusion cylinder (3) is provided with multiple heating zones, each heating zone being provided with an independent thermocouple; characterized in that: The conical feed hopper (4) is fixedly connected to the upper part of the pellet preheating box (2); the temperature sensor (5) is located on the front side of the pellet preheating box (2); the transmission structure is located on the front side of the extruder base (1); the transmission connecting shaft (6) is rotatably connected to the front part of the extruder base (1); the feed hopper cover plate (7) is fixedly connected to the upper part of the transmission connecting shaft (6); the anti-blocking structure is located on the upper part of the conical feed hopper (4).
2. The PVC granule heating and plasticizing device with precise temperature control function as described in claim 1, characterized in that: The transmission structure includes a reciprocating self-locking drive (101) and a limiting mounting sleeve (103); the reciprocating self-locking drive (101) is bolted to the lower part of the extruder base (1), and the control circuit of the temperature sensor (5) is connected in series with the control circuit of the reciprocating self-locking drive (101); the limiting mounting sleeve (103) is fixedly connected to the front part of the extruder base (1), and the limiting mounting sleeve (103) is rotatably connected to the transmission connecting shaft (6).
3. The PVC granule heating and plasticizing device with precise temperature control function as described in claim 2, characterized in that: The transmission structure also includes a driving bevel gear (102) and a driven bevel gear (601); the driving bevel gear (102) is rotatably connected to the lower part of the extruder base (1), and the output shaft of the reciprocating self-locking drive (101) is coaxially fixedly connected to the driving bevel gear (102); the driven bevel gear (601) is fixedly connected to the lower part of the transmission connecting shaft (6), and the driven bevel gear (601) meshes with the driving bevel gear (102).
4. The PVC granule heating and plasticizing device with precise temperature control function as described in claim 1, characterized in that: The anti-blocking structure includes a transmission drive component (401), a transmission mounting shaft (402), and a synchronous transmission structure (403); the transmission drive component (401) is bolted to the right side of the conical feed hopper (4); the transmission mounting shaft (402) is rotatably connected to the middle of the conical feed hopper (4); the synchronous transmission structure (403) is a synchronous belt drive mechanism, and the transmission mounting shaft (402) is coaxially connected to the output shaft of the transmission drive component (401) through the synchronous transmission structure (403).
5. The PVC granule heating and plasticizing device with precise temperature control function as described in claim 4, characterized in that: The anti-clogging structure also includes a particle stirring rod (404) and a magnetic sleeve (405); multiple particle stirring rods (404) are provided, and multiple particle stirring rods (404) are circumferentially arrayed and fixedly connected to the upper part of the transmission mounting shaft (402); multiple magnetic sleeves (405) are provided, and multiple magnetic sleeves (405) are respectively fixedly connected to the outside of multiple particle stirring rods (404).
6. The PVC granule heating and plasticizing device with precise temperature control function as described in claim 5, characterized in that: The anti-blocking structure also includes a reciprocating lead screw (406) and a reciprocating nut (407); the reciprocating lead screw (406) is fixedly connected to the lower part of the transmission mounting shaft (402); the reciprocating nut (407) is threadedly connected to the lower part of the reciprocating lead screw (406).
7. The PVC granule heating and plasticizing device with precise temperature control function as described in claim 6, characterized in that: The anti-clogging structure also includes a dustproof limiting sleeve (408) and a cylindrical connecting rod (409); the dustproof limiting sleeve (408) is fixedly connected to the upper part of the reciprocating nut (407), and the dustproof limiting sleeve (408) is slidably connected to the outside of the transmission mounting shaft (402); the cylindrical connecting rod (409) is rotatably connected to the lower part of the reciprocating nut (407).
8. The PVC granule heating and plasticizing device with precise temperature control function as described in claim 7, characterized in that: The anti-blocking structure also includes an anti-blocking insert (410) and a limiting guide plate (411); multiple anti-blocking inserts (410) are provided, and multiple anti-blocking inserts (410) are circumferentially arrayed and fixedly connected to the lower part of the cylindrical connecting rod (409); the limiting guide plate (411) is fixedly connected to the inner side of the conical feed hopper (4), and the limiting guide plate (411) is slidably connected to the dustproof limiting sleeve (408).