A pneumatic conveying based plastic pelletizing particle collection apparatus
By combining a cyclone separator and a filter bag separator in series, a pipeline anti-blocking module and a closed-loop control system for the collection device, and a negative pressure fan for noise reduction, the problem of insufficient separation accuracy, blockage, and high noise in the particle collection equipment during plastic granulation production is solved, achieving efficient and automated particle collection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN JINGWEI PLASTIC MATERIAL CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-14
AI Technical Summary
In existing plastic granulation production, the separation accuracy of the granule collection equipment is insufficient, resulting in a mixture of coarse and fine granules, which reduces product purity, easily clogs pipes, has a low degree of automation, generates a lot of noise, and granules are prone to residue and clumping, increasing processing costs.
A cyclone separator and a filter bag separator are connected in series, combined with a pulse backflushing system and electromagnetic vibration, to achieve high-precision particle separation; the conveying pipeline is coated with polytetrafluoroethylene and a composite anti-clogging module to prevent blockage; the collection device uses closed-loop control of a weighing sensor and a level gauge to achieve precise automatic unloading; the negative pressure fan uses frequency conversion control and an impedance composite silencer to reduce noise.
It improves the separation efficiency and purity of particle collection, prevents pipeline blockage, enhances automation, reduces material loss, lowers noise, and improves the working environment.
Smart Images
Figure CN224489693U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of collection equipment technology, specifically to a plastic granulation particle collection device based on airflow conveying. Background Technology
[0002] In plastic granulation production, granule collection is a crucial step in ensuring product quality and production efficiency. Existing granule collection equipment often employs a single separation method, which suffers from insufficient separation precision, resulting in a mixture of coarse and fine particles and reduced product purity. During transportation, pipelines are prone to blockage due to particle adhesion and accumulation, requiring frequent manual cleaning and disrupting continuous production. The collection devices have low automation levels, relying on manual unloading and metering, which is not only inefficient but also susceptible to material loss due to operational errors. Furthermore, the equipment generates significant noise during operation, and granules tend to remain and clump within the collection bin, further increasing subsequent processing costs. Utility Model Content
[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a plastic granulation particle collection device based on airflow conveying, which can effectively solve the problems mentioned in the background technology.
[0004] The technical solution adopted by this utility model to solve its technical problem is:
[0005] A plastic granulation particle collection device based on airflow conveying includes an inlet, a conveying pipe, a separation device, a collection device, and a negative pressure fan. The separation device consists of a cyclone separator and a filter bag separator connected in series. The air inlet of the cyclone separator is connected to the conveying pipe, and the coarse particle outlet of the conveying pipe is directly connected to the collection device.
[0006] The air inlet of the filter bag separator is connected to the exhaust port of the cyclone separator, and its fine particle outlet is connected to a collection device through an independent pipe. The negative pressure fan is connected to the clean gas outlet of the filter bag separator.
[0007] As a further description of the above technical solution, the filter bag separator is provided with a detachable filter bag assembly and a pulse backflushing system located on top of the filter bag assembly, and the bottom of the filter bag assembly is suspended.
[0008] As a further description of the above technical solution, the inner wall of the conveying pipe is coated with a polytetrafluoroethylene wear-resistant coating, and a composite anti-clogging module is provided at intervals on the outer side of the conveying pipe. The composite anti-clogging module includes an elastic support unit and a vibration unit, and the vibration unit is composed of an eccentric wheel and a variable frequency motor.
[0009] As a further description of the above technical solution, the collection device includes a collection bin and a discharge valve located at the bottom of the collection bin. A weighing sensor group is integrated at the bottom of the collection bin, and a capacitive level gauge is installed on the side wall of the collection bin. The discharge valve, the weighing sensor, and the external controller constitute a closed-loop control system.
[0010] As a further description of the above technical solution, the negative pressure fan is a variable frequency fan, and its air inlet has a series impedance composite silencer, which includes:
[0011] Perforated stainless steel sheet with a perforation rate of 25%;
[0012] Density 40kg / m³ 3 Ceramic fiber sound-absorbing cotton;
[0013] It is covered with a double-layer soundproof cover, with glass wool filling in between.
[0014] As a further description of the above technical solution, the filter bag of the filter bag assembly has a filter bag filtration accuracy of 5μm.
[0015] As a further description of the above technical solution, the elastic support unit includes an arc-shaped support plate and three sets of springs. The arc-shaped support plate is attached to the outer wall of the conveying pipe, and the springs are evenly distributed along the circumference of the pipe. The two ends of the springs are respectively connected to the arc-shaped support plate and the end of the conveying pipe.
[0016] As a further description of the above technical solution, the inner wall of the collection bin is coated with an ultra-high molecular weight polyethylene anti-stick coating, and the top of the collection bin is also provided with a pressure relief and balance pipe connected to the air inlet of the cyclone separator.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] The present invention discloses a plastic granulation pellet collection device based on pneumatic conveying, which has at least one of the following beneficial effects during use:
[0019] The separation unit employs a cyclone separator and a filter bag separator in series to achieve graded separation of coarse and fine particles. The 5μm high-precision filter bags, combined with pulse backflushing and electromagnetic vibration, ensure separation efficiency and purity. The conveying pipeline features a wear-resistant PTFE coating and a composite anti-clogging module to prevent blockage and extend its service life. The collection unit utilizes a closed-loop control system with a weighing sensor and level gauge for precise automatic unloading. An ultra-high molecular weight polyethylene coating prevents sticking, and a pressure relief and balancing pipe ensures stability. The negative pressure fan is frequency-adjustable, and the impedance composite silencer significantly reduces noise. Overall, this system improves the automation and efficiency of particle collection, reduces material loss, improves the working environment, and offers strong adaptability. Attached Figure Description
[0020] Figure 1This is a schematic diagram of the overall structure of a plastic granulation particle collection device based on airflow conveying according to this utility model;
[0021] Figure 2 This is a side view of a plastic granulation particle collection device based on airflow conveying according to this utility model.
[0022] Figure 3 This is a perspective structural diagram of a plastic granulation particle collection device based on airflow conveying according to this utility model.
[0023] Numbering on the map:
[0024] 1. Separation device; 2. Collection device; 3. Negative pressure fan; 4. Filter bag separator; 5. Feed inlet; 6. Composite anti-clogging module; 7. Conveying pipeline; 8. Cyclone separator; 9. Collection bin; 10. Discharge valve; 11. Weighing sensor group; 12. Polytetrafluoroethylene wear-resistant coating; 13. Vibration unit; 14. Pulse backflushing system; 15. Ultra-high molecular weight polyethylene anti-stick coating; 16. Elastic support unit; 17. Arc-shaped support plate; 18. Electromagnetic vibrator; 19. Filter bag group; 20. Capacitive level gauge. Detailed Implementation
[0025] 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.
[0026] like Figure 1-3 As shown, this utility model provides a plastic granulation particle collection device based on airflow conveying, including a feed inlet 5, a conveying pipe 7, a separation device 1, a collection device 2, and a negative pressure fan 3. The separation device 1 is composed of a cyclone separator 8 and a filter bag separator 4 connected in series. The air inlet of the cyclone separator 8 is connected to the conveying pipe 7, and the coarse particle outlet of the conveying pipe 7 is directly connected to the collection device 2.
[0027] This embodiment uses negative pressure airflow as the core power source, and achieves efficient collection of plastic granules through the coordinated operation of various components. The granules enter the conveying pipe 7 through the inlet 5 and move along the conveying pipe 7 under the action of negative pressure airflow generated by the negative pressure fan 3. The polytetrafluoroethylene wear-resistant coating 12 on the inner wall of the conveying pipe 7 reduces wear during granule conveying, while the composite anti-clogging module 6 on the outer side plays its role. The variable frequency motor of the vibration unit 13 drives the eccentric wheel to rotate, generating vibration. Combined with the arc-shaped support plate 17 and spring of the elastic support unit 16, this effectively prevents granules from clogging inside the pipe, ensuring smooth granule conveying.
[0028] The air inlet of the filter bag separator 4 is connected to the exhaust port of the cyclone separator 8, and its fine particle outlet is connected to the collection device 2 through an independent pipe. The negative pressure fan 3 is connected to the clean gas outlet of the filter bag separator 4.
[0029] After entering the cyclone separator 8 with the airflow, coarse particles are thrown against the wall by centrifugal force and fall down the wall, entering the collection device 2 directly from the coarse particle outlet. The remaining gas containing fine particles enters the filter bag separator 4 from the exhaust port of the cyclone separator 8, where the fine particles are filtered to a precision of 5μm. The pulse backflushing system 14 at the top of the filter bag assembly 19 can periodically clean the filter bags, and the electromagnetic vibrator 18 at the bottom outlet of the filter bag separator 4 vibrates in a direction parallel to the filter bag axis, causing the fine particles to detach from the filter bags and enter the collection device 2 through an independent pipe. The clean gas enters the negative pressure fan 3 through the clean gas outlet of the filter bag separator 4 and is finally discharged.
[0030] In the collection device 2, the collection bin 9 receives particles, and the pressure relief and balance pipe at the top balances the pressure inside the bin. A capacitive level gauge 20 on the side wall monitors the material level, and a weighing sensor group 11 at the bottom weighs the particles. The discharge valve 10, the weighing sensors, and the external controller form a closed-loop control system. When the particles reach the set weight or level, the controller controls the discharge valve 10 to open and discharge, achieving precise collection and unloading. An ultra-high molecular weight polyethylene anti-stick coating 15 on the inner wall of the collection bin 9 prevents particles from adhering.
[0031] Negative pressure fan 3 uses a variable frequency fan, allowing for airflow adjustment according to actual needs. Its inlet features a series-connected impedance composite silencer made of 25% perforated stainless steel plate with a density of 40 kg / m³. 3 The ceramic fiber sound-absorbing cotton and the outer double-layer sound insulation cover (with glass wool filling) effectively reduce equipment operating noise.
[0032] As a further description of the above technical solution, the filter bag separator 4 is equipped with a detachable filter bag assembly 19 and a pulse backflushing system 14 located on top of the filter bag assembly 19, with the bottom of the filter bag assembly 19 suspended. The separation unit adopts a series connection between a cyclone separator 8 and the filter bag separator 4. The cyclone separator 8 first separates coarse particles, and the filter bag separator 4 then performs high-precision filtration on the fine particles, achieving effective separation of particles of different sizes and improving the purity of particle collection and separation effect.
[0033] The filter bag separator 4 has a filter bag filtration accuracy of 5μm, which can effectively intercept fine particles. The pulse backflush system 14 and electromagnetic vibrator 18 can clean the particles on the filter bag in time, ensuring the long-term stable filtration performance of the filter bag and reducing particle loss.
[0034] Furthermore, the inner wall of the conveying pipe 7 is coated with a polytetrafluoroethylene (PTFE) wear-resistant coating 12, and composite anti-clogging modules 6 are spaced apart on the outer side of the conveying pipe 7. The composite anti-clogging module 6 includes an elastic support unit 16 and a vibration unit 13, which consists of an eccentric wheel and a variable frequency motor. The PTFE wear-resistant coating 12 of the conveying pipe 7 reduces particle wear on the pipe and extends its service life.
[0035] The vibration unit 13 and elastic support unit 16 of the composite anti-clogging module 6 work together to effectively prevent particle blockage and ensure smooth and stable conveying process.
[0036] Furthermore, the collection device 2 includes a collection bin 9 and a discharge valve 10 located at the bottom of the collection bin 9. A weighing sensor group 11 is integrated at the bottom of the collection bin 9, and a capacitive level gauge 20 is installed on the side wall of the collection bin 9. The discharge valve 10, the weighing sensors, and an external controller constitute a closed-loop control system. The weighing sensor group 11 and the capacitive level gauge 2 of the collection device 2 can monitor the particle weight and level in real time. By controlling the discharge valve 10 through the closed-loop control system, accurate particle collection and automatic discharge are achieved, improving collection efficiency and automation.
[0037] Furthermore, the negative pressure fan 3 is a variable frequency fan, and its air inlet has a series impedance composite silencer, which includes:
[0038] Perforated stainless steel sheet with a perforation rate of 25%;
[0039] Density 40kg / m³ 3 Ceramic fiber sound-absorbing cotton;
[0040] It is covered with a double-layer soundproof cover, with glass wool filling in between.
[0041] The negative pressure fan 3 adopts frequency conversion control, and the impedance composite silencer connected in series at the air inlet uses a combination of various sound insulation and sound absorption materials to significantly reduce the noise during equipment operation and improve the working environment.
[0042] Furthermore, the filter bag assembly 19 has a filter bag filtration accuracy of 5μm. The filter bag separator 4 also has a filter bag filtration accuracy of 5μm, which can effectively trap fine particles.
[0043] Furthermore, the elastic support unit 16 includes an arc-shaped support plate 17 and three sets of springs. The arc-shaped support plate 17 is attached to the outer wall of the conveying pipe 7, and the springs are evenly distributed along the circumference of the pipe. The two ends of the springs are respectively connected to the arc-shaped support plate 17 and the end of the conveying pipe 7.
[0044] Furthermore, the inner wall of the collection bin 9 is coated with an ultra-high molecular weight polyethylene anti-stick coating 15, and the top of the collection bin 9 is also provided with a pressure relief and balance pipe connected to the air inlet of the cyclone separator 8.
[0045] The anti-stick coating on the inner wall of the collection bin 9 prevents particle residue, and the pressure relief and balance pipe ensures the stability of the collection process.
[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A plastic granulation pellet collection device based on pneumatic conveying, characterized in that: It includes a feed inlet, a conveying pipeline, a separation device, a collection device, and a negative pressure fan. The separation device consists of a cyclone separator and a filter bag separator connected in series. The air inlet of the cyclone separator is connected to the conveying pipeline, and the coarse particle outlet of the conveying pipeline is directly connected to the collection device. The air inlet of the filter bag separator is connected to the exhaust port of the cyclone separator, and its fine particle outlet is connected to a collection device through an independent pipe. The negative pressure fan is connected to the clean gas outlet of the filter bag separator.
2. The plastic granulation pellet collection device based on pneumatic conveying according to claim 1, characterized in that: The filter bag separator is equipped with a detachable filter bag assembly and a pulse backflushing system located on top of the filter bag assembly, with the bottom of the filter bag assembly suspended in the air.
3. The plastic granulation pellet collection device based on pneumatic conveying according to claim 1, characterized in that: The inner wall of the conveying pipe is coated with a polytetrafluoroethylene wear-resistant coating, and the outer side of the conveying pipe is provided with composite anti-clogging modules at intervals. The composite anti-clogging module includes an elastic support unit and a vibration unit. The vibration unit is composed of an eccentric wheel and a variable frequency motor.
4. The plastic granulation pellet collection device based on pneumatic conveying according to claim 1, characterized in that: The collection device includes a collection bin and a discharge valve located at the bottom of the collection bin. A weighing sensor group is integrated at the bottom of the collection bin, and a capacitive level gauge is installed on the side wall of the collection bin. The discharge valve, the weighing sensor, and the external controller constitute a closed-loop control system.
5. A plastic granulation pellet collection device based on pneumatic conveying according to claim 1, characterized in that: The negative pressure fan is a variable frequency fan, and its air inlet has a series impedance composite silencer, which includes: Perforated stainless steel sheet with a perforation rate of 25%; Density 40kg / m³ 3 Ceramic fiber sound-absorbing cotton; It is covered with a double-layer soundproof cover, with glass wool filling in between.
6. The plastic granulation pellet collection device based on pneumatic conveying according to claim 2, characterized in that: The filter bag assembly has a filtration accuracy of 5μm.
7. A plastic granulation pellet collection device based on pneumatic conveying according to claim 3, characterized in that: The elastic support unit includes an arc-shaped support plate and three sets of springs. The arc-shaped support plate fits against the outer wall of the conveying pipe, and the springs are evenly distributed along the circumference of the pipe. The two ends of the springs are respectively connected to the arc-shaped support plate and the end of the conveying pipe.
8. A plastic granulation pellet collection device based on pneumatic conveying according to claim 4, characterized in that: The inner wall of the collection bin is coated with an ultra-high molecular weight polyethylene anti-stick coating, and the top of the collection bin is also provided with a pressure relief and balance pipe connected to the air inlet of the cyclone separator.