Granulator for thermoplastic elastomer
Through the dual pellet cutting design of the pelletizing roller and the re-cutting roller, combined with the inclined sieve grain channel and the multi-layer screen structure, the problems of low cutting efficiency and agglomeration in the thermoplastic elastomer pelletizer are solved, and more efficient pelletizing processing and product quality improvement are achieved.
Patent Information
- Application Number
- CN202422449977.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-10-10
AI Technical Summary
In the thermoplastic elastomer pelletizing processing, existing pelletizers have problems such as low cutting efficiency, uneven particle size, easy to aggregate and difficult to process secondary processing, which affects product quality and production efficiency.
The double-cut granular design of the pelletizing roller and the re-cutting roller is adopted, combined with the inclined screening channel and the multi-layer screen structure, to achieve the primary and secondary cutting and screening of the thermoplastic elastomer, reduce blockage through the design of the guide groove and re-cutting chamber, and enhance the uniformity and consistency of the pellet.
It improves the uniformity and consistency of pelletizing, reduces the risk of blockage, improves the efficiency and product quality of pelletizing, and ensures the rapid screening effect of pelletizing.
Smart Images
Figure CN223290097U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of pelletizers, in particular to a pelletizer for thermoplastic elastomers. Background Art
[0002] As a key piece of equipment in the plastics processing industry, pelletizers are widely used in a wide range of sectors, including but not limited to the chemical, petrochemical, pharmaceutical, food, building materials, mining, environmental protection, printing and dyeing, ceramics, and rubber industries. Pellets are particularly indispensable tools in the plastics processing sector, completing the processing and shaping of plastic pellets through process steps such as crushing and cutting. Pellets are also widely used in the glass fiber reinforcement and cold drawing granulation processes of thermoplastic elastomers, polyolefins, and engineering plastics, providing important support for plastics recycling and processing.
[0003] Existing pelletizers primarily consist of a feeder, cutter blades, a vibrating screen, a discharge port, and a drive motor. The feeder delivers the raw materials into the main unit in an orderly fashion via a chain or conveyor belt. The cutter blade, a core component typically consisting of a disc or cylinder and blades, rotates to cut the raw materials into small particles. The vibrating screen separates dust and impurities and controls particle size distribution. The discharge port discharges the cut particles out of the machine. The drive motor serves as the power source to drive the cutter blades. The entire pelletizing process is achieved through the rotation of the cutter blades and the separation of the vibrating screen. Particle size is primarily determined by the rotation speed of the cutter blades and the aperture of the screen.
[0004] However, the existing pelletizers still have defects in the pelletizing process of thermoplastic elastomers. Some pelletizers are only equipped with primary processing cutting, and due to improper blade wear and adjustment, the cutting efficiency is reduced, the particle size is uneven, resulting in poor screening effect of subsequent screens, and large particles are prone to blockage, affecting product quality and cutting efficiency. In addition, during the processing of existing thermoplastic elastomers, due to the stickiness of hot rubber, it is easy for rubber particles to clump together after pelletizing, and the existing pelletizers are not easy to perform secondary processing, which affects the pelletizing production efficiency. Utility Model Content
[0005] The purpose of the present utility model is to solve the above defects and provide a thermoplastic elastomer pelletizer to solve the technical problems in the above background technology that the pelletizing screening effect is poor and the pelletizing is difficult to be processed and screened after the pellets are agglomerated, thereby affecting the pelletizing quality and efficiency.
[0006] The purpose of this utility model is achieved by the following methods:
[0007] A pelletizer for thermoplastic elastomer comprises a frame and a cutting box arranged on the frame, a feed port is provided at one end of the cutting box, the feed port is connected to a material guiding mechanism, a pelletizing roller for pelletizing the thermoplastic elastomer is provided in the cutting box, a driving member for driving the pelletizing roller to rotate is connected to the outside of the cutting box through a connecting member, a pelletizing chamber is formed in the cutting box, and a sieve channel connected to the pelletizing chamber is formed at one end of the cutting box, one end of the sieve channel extends outwardly at an angle and is connected to a re-cutting box, a re-cutting roller for pelletizing the thermoplastic elastomer is connected to the inside of the re-cutting box, a discharge filter is connected to the inside of the cutting chamber, a conductive discharge port is provided at the bottom of the sieve channel, a first discharge screen is connected in the discharge port, sieve holes for conducting with the sieve channel are provided on the surface of the first discharge screen, and a second discharge screen is connected to the inside of the re-cutting box.
[0008] Further in the above description, the material guiding mechanism includes a material guiding hopper and a material guiding roller. The material guiding hopper is installed on the material cutting box, and the material guiding hopper is conductively connected to the material cutting box. The material guiding roller is installed in the feed port of the material cutting box. A material guiding groove is provided on the outer surface of the material guiding roller. One end of the material guiding roller passes through the material cutting box and is connected to a rotating part for driving the material guiding roller to rotate.
[0009] Specifically, the rotating member is a rotating motor, which drives the guide roller to rotate so that the material on the guide trough is introduced into the cutting chamber through the feed port, and then the pelletizing action is performed by the pelletizing roller.
[0010] Further in the above description, a re-cutting chamber is formed inside the re-cutting box, and a discharge port connected to the re-cutting chamber is opened on the side of the re-cutting box, and a cutting tooth plate is connected to the inside of the re-cutting chamber. The second discharge screen is installed in the re-cutting chamber, and a plurality of connected unloading holes are opened on the surface of the second discharge screen, and the second discharge screen is arranged in a semicircular arc shape.
[0011] The material pelletized in the pelletizing chamber is screened through the screening channel. When the pellets agglomerate after passing through the screening channel, the agglomerated pellets roll into the re-cutting chamber through the inclined screening channel and are cut a second time by the re-cutting roller in the re-cutting chamber, thereby enhancing the pelletizing quality and effect of the material and reducing the accumulation of agglomerated pellets on the first discharge screen.
[0012] Optionally, the second discharge screen is arranged in a raised semicircular arc so that the material after secondary pelletizing falls into the upper surface of the second discharge screen and is discharged through the discharge hole, thereby further improving the screening of pelletizing and enhancing the quality of pelletizing.
[0013] Further in the above description, the sieve passage is integrally formed with the cutting box, and one end of the sieve passage extends obliquely toward the re-cutting box and is conductively connected to the re-cutting chamber of the re-cutting box.
[0014] Optionally, the screening channel is arranged to be inclined downward so that the agglomerated pellets can roll along the screening channel, thereby reducing the blockage of the agglomerated pellets on the screening channel and the first discharge screen.
[0015] Further in the above description, the discharge filter is installed at the connection between the particle screening channel and the cutting chamber, and a plurality of conductive filter holes are opened on the surface of the discharge filter.
[0016] Optionally, the filter holes are smaller than the sieve holes of the first discharging screen, so that the cut pellets pass through the filter holes and can be easily discharged through the sieve holes.
[0017] Further in the above description, one end of the re-cutting roller passes through the re-cutting box and is connected to a re-cutting drive motor, the side of the re-cutting box is connected to a filter fan for filtering dust, the air inlet of the filter fan is conductively connected to the re-cutting chamber, the air inlet of the filter fan is provided with a dust filter, and the exhaust outlet of the filter fan is exposed and extends outward.
[0018] Optionally, a filter fan is provided to absorb dust from the re-cutting chamber, so that the pelletizing chamber and the re-cutting chamber absorb the dust generated by material cutting, and remove dust through an external dust collector, thereby reducing dust adhesion to the pelletizing and enhancing the quality of pelletizing.
[0019] Further in the above description, a material receiving barrel is provided on the frame, a material receiving trough with one end open is formed inside the material receiving barrel, and the open end of the material receiving barrel extends toward the discharge port of the particle screening channel.
[0020] The beneficial effects of the present invention are as follows: through the double pelletizing of the pelletizing roller and the re-cutting roller, when the thermoplastic elastomer cut in the pelletizing chamber passes through the discharge filter and rolls along the inclined sieve channel, the small particles of the thermoplastic elastomer cut materials pass through the sieve holes of the first discharge screen for screening; when the pelletizing of small particles agglomerates to form large particles, the large particles roll along the sieve channel into the re-cutting box, and the agglomerated thermoplastic elastomer is subjected to secondary processing by the re-cutting roller and screened through the second discharge screen in the re-cutting box, so as to ensure the uniformity and consistency of pelletizing, greatly improving the pelletizing efficiency and product quality; at the same time, the combination of the sieve channel and the first discharge screen improves the rapid screening of the pelletized material, and the inclined sieve channel facilitates the natural sliding of the material, reducing the risk of blockage of the pelletizing on the first discharge screen; at the same time, the sieve holes set can remove larger particles, so that they can pass through the subsequent re-cutting box for re-cutting processing, further improving the product quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 A three-dimensional diagram of the embodiment in the first direction;
[0022] Figure 2It is a three-dimensional diagram of the embodiment in the second direction;
[0023] Figure 3 is a cross-sectional view of this embodiment;
[0024] Figure 4 Schematic diagram of the internal structure of this embodiment;
[0025] The reference numerals in the figure are: 1-frame, 2-cutting box, 3-pellet cutting roller, 4-connecting part, 5-pellet cutting chamber, 6-screening channel, 7-re-cutting box, 8-re-cutting roller, 9-discharge filter, 10-discharge port, 11-first discharge screen, 12-screen hole, 13-second discharge screen, 14-guide hopper, 15-guide roller, 16-guide trough, 17-rotating part, 18-re-cutting chamber, 19-discharge port, 20-cutting tooth plate, 21-discharge hole, 22-filter hole, 23-re-cutting drive motor, 24-filter fan, 25-receiving barrel. DETAILED DESCRIPTION
[0026] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.
[0027] In this embodiment, refer to Figures 1-4 The specific implementation of a thermoplastic elastomer pelletizer includes a frame 1 and a cutting box 2 arranged on the frame 1, a feed port is opened at one end of the cutting box 2, the feed port is connected to a material guide mechanism, a pelletizing roller 3 for pelletizing the thermoplastic elastomer is arranged in the cutting box 2, and a driving member (not shown) for driving the pelletizing roller 3 to rotate is connected to the outside of the cutting box 2 through a connecting member 4, a pelletizing chamber 5 is formed in the cutting box 2, and a hole is formed at one end of the cutting box 2 that is connected to the pelletizing chamber 5. The particle screening channel 6 has one end that extends outward at an angle and is connected to a re-cutting box 7. The interior of the re-cutting box 7 is connected to a re-cutting roller 8 for pelletizing thermoplastic elastomers. The interior of the cutting chamber is connected to a discharge filter 9. A conductive discharge port 10 is provided at the bottom of the particle screening channel 6. A first discharge screen 11 is connected to the discharge port 10. The surface of the first discharge screen 11 is provided with particle screening holes 12 for conducting with the particle screening channel 6. The interior of the re-cutting box 7 is connected to a second discharge screen 13.
[0028] In this embodiment, the material guide mechanism includes a guide hopper 14 and a guide roller 15. The guide hopper 14 is mounted on the cutting box 2 and is electrically connected to the cutting box 2. The guide roller 15 is mounted in the feed port of the cutting box 2. A guide groove 16 is formed on the outer surface of the guide roller 15. One end of the guide roller 15 passes through the cutting box 2 and is connected to a rotating member 17 for driving the guide roller 15 to rotate. Specifically, the rotating member 17 is a rotary motor (not shown). The rotary motor drives the guide roller 15 to rotate, so that the material on the guide groove 16 is introduced into the cutting chamber through the feed port, and then is pelletized by the pelletizing roller 3.
[0029] In this embodiment, a re-cutting chamber 18 is formed inside the re-cutting box 7, and a discharge port 19 connected to the re-cutting chamber 18 is opened on the side of the re-cutting box 7. The interior of the re-cutting chamber 18 is connected to a cutting tooth plate 20, and the second discharge screen 13 is installed in the re-cutting chamber 18. A conductive discharge hole 21 is opened on the surface of the second discharge screen 13, and the second discharge screen 13 is arranged in a semicircular arc shape.
[0030] The material pelletized in the pelletizing chamber 5 is screened through the screening channel 6. When the pellets agglomerate after passing through the screening channel 6, the agglomerated pellets roll through the inclined screening channel 6 into the re-cutting chamber 18. The re-cutting rollers 8 within the re-cutting chamber 18 perform a second cutting on the pelletizing material, thereby enhancing the pelletizing quality and effect and reducing the accumulation of agglomerated pellets on the first discharge screen 11. Specifically, the second discharge screen 13 is configured as a raised semicircular arc, so that the secondary pelletized material falls onto the upper surface of the second discharge screen 13 and is discharged through the discharge hole 21, further improving the screening of the pellets and enhancing the pelletizing quality.
[0031] In this embodiment, the sieve passage 6 is integrally formed with the cutting box 2, and one end of the sieve passage 6 extends obliquely toward the re-cutting box 7 and is electrically connected to the re-cutting chamber 18 of the re-cutting box 7. Specifically, the sieve passage 6 is tilted downward so that agglomerated pellets can roll along the sieve passage 6, thereby reducing clogging of the sieve passage 6 and the first discharge screen 11 by agglomerated pellets. A receiving barrel 25 is provided on the frame 1. The receiving barrel 25 has a receiving trough formed therein with one end open, and the open end of the receiving barrel 25 extends toward the discharge port 10 of the sieve passage 6.
[0032] In this embodiment, the discharge filter 9 is installed at the junction of the sieve passage 6 and the cutting chamber, and the surface of the discharge filter 9 is provided with conductive filter holes 22. Specifically, the filter holes 22 are smaller than the sieve holes 12 of the first discharge screen 11, allowing the cut pellets to pass through the filter holes 22 and easily pass through the sieve holes 12 for discharge. The sieve holes 12 of the first discharge screen 11 and the sieve holes 12 of the second discharge screen 13 have the same aperture.
[0033] One end of the re-cutting roller 8 of the sieve hole 12 of the first discharge screen 11 passes through the re-cutting box 7 and is connected to a re-cutting drive motor 23. A filter fan 24 for filtering dust is connected to the side of the re-cutting box 7. The air inlet of the filter fan 24 is conductively connected to the re-cutting chamber 18. The air inlet of the filter fan 24 is provided with a dust filter (not shown), and the air outlet of the filter fan 24 is exposed and extends outward. The filter fan 24 is provided to absorb dust from the re-cutting chamber 18, so that the pelletizing chamber 5 and the re-cutting chamber 18 absorb dust generated by material cutting, and the dust is removed by an external dust collector, thereby reducing dust adhesion to the pellets and improving the quality of the pelletizing.
[0034] Specifically, the driving member (not shown) in this embodiment is a pelletizing drive motor, the connecting member 4 is two meshing gears, and the output shaft of the pelletizing drive motor is coaxially connected to a gear, thereby driving the connecting member 4 to drive the pelletizing roller 3 to perform cutting action.
[0035] Specifically, the pelletizing roller and the re-cutting roller in the pelletizer in this embodiment are conventional pelletizing actions for those skilled in the art, and the specific control and driving thereof will not be elaborated in detail.
[0036] The specific usage principle in this embodiment is:
[0037] The external thermoplastic elastomer is introduced into the guide hopper 14, and is fed to the pelletizing chamber 5 by the guide roller 15 driven by the rotating motor. After the thermoplastic elastomer enters the pelletizing chamber 5, it is pelletized by the pelletizing drive motor driving the pelletizing roller 3, so that the cut plastic particles pass through the filter holes 22 of the discharge filter 9 into the sieve channel 6, and roll along the sieve channel 6 set obliquely downward, so that the pellets are screened for the first time through the first discharge screen 11. When agglomerated particles or large particles appear, they roll along the sieve channel 6 into the re-cutting chamber 18, and are cut for the second time or the agglomerated particles are broken up by the re-cutting roller 8. , so that the secondary cut pellets pass through the second discharge screen 13 for screening, and are double-pelletized by the pelletizing roller 3 and the re-cutting roller 8, thereby further ensuring the uniformity and consistency of the pelletizing, greatly improving the pelletizing efficiency and product quality. At the same time, the combination of the screening channel 6 and the first discharge screen 11 improves the rapid screening of the pelletized material. The inclined screening channel 6 facilitates the natural sliding of the material, reducing the risk of pelletizing on the first discharge screen 11. At the same time, the screen holes 12 can remove larger particles, allowing them to pass through the subsequent re-cutting box 7 for re-cutting processing, further improving the product quality and production efficiency.
[0038] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.
Claims
1. A thermoplastic elastomer pelletizer, comprising a frame and a cutting box mounted on the frame, wherein a feed port is formed at one end of the cutting box, the feed port being connected to a material guide mechanism, a pelletizing roller for pelletizing the thermoplastic elastomer being disposed within the cutting box, and a drive member for rotating the pelletizing roller being connected to the outside of the cutting box via a connecting member, characterized in that: A pelletizing chamber is formed in the cutting box, and a sieve channel connected to the pelletizing chamber is formed at one end of the cutting box, one end of the sieve channel extends obliquely outward and is connected to a re-cutting box, the interior of the re-cutting box is connected to a re-cutting roller for pelletizing thermoplastic elastomers, the interior of the cutting chamber is connected to a discharge filter, a conductive discharge port is provided at the bottom of the sieve channel, a first discharge screen is connected to the discharge port, and sieve holes for communicating with the sieve channel are provided on the surface of the first discharge screen, and a second discharge screen is connected to the interior of the re-cutting box.
2. The pelletizer for thermoplastic elastomer according to claim 1, characterized in that: The material guiding mechanism includes a material guiding hopper and a material guiding roller. The material guiding hopper is installed on the material cutting box, and the material guiding hopper is conductively connected to the material cutting box. The material guiding roller is installed in the feed port of the material cutting box. A material guiding groove is provided on the outer surface of the material guiding roller. One end of the material guiding roller passes through the material cutting box and is connected to a rotating part for driving the material guiding roller to rotate.
3. The pelletizer for thermoplastic elastomer according to claim 1, characterized in that: A re-cutting chamber is formed inside the re-cutting box, and a discharge port connected to the re-cutting chamber is opened on the side of the re-cutting box. A cutting tooth plate is connected to the inside of the re-cutting chamber. The second discharge screen is installed in the re-cutting chamber. A plurality of conductive discharge holes are opened on the surface of the second discharge screen, and the second discharge screen is arranged in a semicircular arc shape.
4. The pelletizer for thermoplastic elastomer according to claim 3, characterized in that: The particle screening channel is integrally formed with the cutting box, and one end of the particle screening channel extends obliquely toward the re-cutting box and is conductively connected to the re-cutting chamber of the re-cutting box.
5. The pelletizer for thermoplastic elastomer according to claim 1, characterized in that: The discharge filter screen is installed at the connection between the particle screening channel and the cutting chamber, and a plurality of conducting filter holes are opened on the surface of the discharge filter screen.
6. A pelletizer for thermoplastic elastomer according to any one of claims 1 to 5, characterized in that: One end of the re-cutting roller passes through the re-cutting box and is connected to a re-cutting drive motor. The side of the re-cutting box is connected to a filter fan for filtering dust. The air inlet of the filter fan is conductively connected to the re-cutting chamber. The air inlet of the filter fan is provided with a dust filter, and the exhaust outlet of the filter fan is exposed and extends outward.
7. A pelletizer for thermoplastic elastomer according to any one of claims 1 to 5, characterized in that: A material receiving barrel is provided on the frame. A material receiving trough with an open end is formed inside the material receiving barrel, and the open end of the material receiving barrel extends toward the discharge port of the particle screening channel.