Polypropylene particle high-efficiency screening device
By introducing electrostatic elimination components and vibration mechanisms into the polypropylene particle screening device, the problems of easy clogging of the filter screen and electrostatic adsorption are solved, and efficient polypropylene particle screening is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU JUXITING NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-21
AI Technical Summary
Existing polypropylene particle screening devices suffer from problems such as easy clogging of the filter screen and static electricity on the surface of polypropylene particles causing them to adhere to the screen, which affects screening efficiency.
The device employs an electrostatic elimination component and a vibration mechanism. It eliminates static electricity on the particle surface through an annular ion air bar and uses a rotating disk and drive ball to drive the shell to vibrate, thus avoiding screen clogging and improving screening efficiency.
It effectively prevents polypropylene particles from adsorbing onto the screen, avoids screen clogging, improves screening efficiency, and ensures efficient screening of polypropylene particles.
Smart Images
Figure CN224527689U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of polypropylene particle screening technology, specifically relating to a high-efficiency polypropylene particle screening device. Background Technology
[0002] During the production, transportation, and packaging of polypropylene granules, some dust and fine particles are inevitably generated. If these substandard fine particles are mixed into the finished product, they will affect the product quality in subsequent injection molding or blow molding processes, such as causing problems like air bubbles, reduced strength, or poor surface finish. Therefore, efficient screening of polypropylene granules to remove dust and particles before packaging and shipment is a crucial process.
[0003] Existing screening devices for polypropylene suffer from problems such as easy clogging of the filter screen, which is difficult to clean and affects the screening efficiency of polypropylene particles. At the same time, the static electricity on the surface of polypropylene particles makes them easy to be attracted to the screen, further affecting the screening efficiency of the screen.
[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0005] The purpose of this invention is to provide a high-efficiency screening device for polypropylene particles, which can solve the problems of easy clogging of the filter screen and difficulty in cleaning and scoring, as well as the problem of the electrostatic charge on the surface of polypropylene particles causing them to easily adhere to the screen.
[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:
[0007] A high-efficiency polypropylene particle screening device includes a main body, a screening mechanism, and a vibration mechanism. The main body includes a housing with a feed inlet and an electrostatic elimination component at the bottom of the feed inlet. The screening mechanism includes a coarse screen and a fine screen installed sequentially from top to bottom within the housing, both installed at an angle. The vibration mechanism includes a rotating disk installed at the bottom of the housing, with multiple drive balls fixedly connected to the rotating disk in a ring. Multiple drive grooves matching the drive balls are formed in a ring on the outer side wall of the bottom panel of the housing. A pair of vibration guide components are installed on the side wall of the housing.
[0008] In one or more embodiments of the present invention, the electrostatic elimination component includes an annular ion air bar installed at the bottom of the feed inlet, and an air outlet is provided on the inner side wall of the annular ion air bar.
[0009] In one or more embodiments of this utility model, the air outlet is arranged in a downward tilted manner, and the downward tilt angle of the air outlet is set to 45 degrees.
[0010] In one or more embodiments of the present invention, a guide platform is integrally formed on the inner side wall of the bottom wall panel of the housing, and the upper surface of the guide platform is arranged in a downward inclined manner.
[0011] In one or more embodiments of this utility model, a waste discharge port is installed on the side wall of the housing at a position corresponding to the lower end of the coarse screen and the guide platform, and a qualified product discharge port is installed on the side wall of the housing at a position corresponding to the lower end of the fine screen.
[0012] In one or more embodiments of this utility model, a support plate is fixedly connected inside the housing below the coarse screen and the fine screen, respectively, and the support plate is provided with a plurality of discharge holes.
[0013] In one or more embodiments of this utility model, the pallet is provided with a plurality of elastic bouncing balls, the outer diameter of which is larger than the inner diameter of the discharge hole.
[0014] In one or more embodiments of the present invention, a pair of vibration guiding components includes a pair of support columns disposed on both sides of the housing, and each of the support columns has a sliding groove on the side facing the housing.
[0015] In one or more embodiments of this utility model, a slider is slidably connected in the groove, and one end of the slider is fixedly connected to the outer wall of the housing.
[0016] In one or more embodiments of this utility model, a compression spring is installed in the groove, and the compression spring is installed above the slider.
[0017] Compared with the prior art, this utility model is equipped with a vibration mechanism. When polypropylene particles are screened by the screening mechanism, the vibration mechanism causes the polypropylene particles to vibrate on the screen to achieve screening, which avoids screen clogging and improves screening efficiency. When polypropylene particles are added, the static elimination component will eliminate the static electricity on the surface of the polypropylene, preventing the polypropylene particles from adsorbing on the filter screen, further improving screening efficiency. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a front view of a high-efficiency polypropylene particle screening device according to an embodiment of the present invention.
[0020] Figure 2 This is a perspective view of a high-efficiency polypropylene particle screening device according to an embodiment of the present invention;
[0021] Figure 3 This is a cross-sectional view of a high-efficiency polypropylene particle screening device according to an embodiment of the present invention.
[0022] Figure 4 This is a front cross-sectional view of a high-efficiency polypropylene particle screening device according to an embodiment of the present invention.
[0023] Figure 5 This is a right-side cross-sectional view of a high-efficiency polypropylene particle screening device according to an embodiment of the present invention.
[0024] Figure 6 This is a schematic diagram of point A in the figure of this utility model.
[0025] Explanation of key figure labels:
[0026] 1-Main body, 11-Shell, 12-Feed inlet, 13-Annular ion air bar, 14-Air outlet, 2-Screening mechanism, 21-Coarse screen, 22-Fine screen, 23-Guide platform, 24-Impurity discharge port, 25-Qualified product discharge port, 3-Vibration mechanism, 31-Rotating disc, 32-Drive ball, 33-Drive groove, 34-Panel, 35-Discharge hole, 36-Elastic bouncing ball, 37-Support column, 38-Slide groove, 39-Slider, 310-Compression spring. Detailed Implementation
[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0028] like Figures 1-5As shown, an embodiment of the present invention provides a high-efficiency polypropylene particle screening device, comprising a main body 1, a screening mechanism 2, and a vibration mechanism 3. The main body 1 includes a housing 11, on which a feed inlet 12 is installed, and an electrostatic elimination component is installed at the bottom of the feed inlet 12. The screening mechanism 2 includes a coarse screen 21 and a fine screen 22 installed sequentially from top to bottom within the housing 11, both installed at an angle. The vibration mechanism 3 includes a rotating disk 31 installed at the bottom of the housing 11, on which multiple driving balls 32 are fixedly connected in a ring. Multiple driving grooves 33 matching the driving balls 32 are opened in a ring on the outer side wall of the bottom wall of the housing 11. A pair of vibration guide components are installed on the side wall of the housing 11.
[0029] In operation, this high-efficiency polypropylene granule screening device first rotates the rotating disk 31 via a motor at its bottom. The rotation of the disk 31 drives multiple driving balls 32 to rotate. These driving balls 32 alternately slide in and out of multiple driving slots 33, causing the housing 11 to vibrate up and down. Simultaneously, the vibration guide assembly stabilizes the vibration of the housing 11. Then, the polypropylene granules to be screened are added into the housing 11 through the feed inlet 12. Upon entering the housing 11, the electrostatic elimination component eliminates static electricity from the surface of the polypropylene granules, preventing them from carrying static charge and effectively preventing them from adhering to the coarse and fine screens 21 and 22 due to static electricity. After static electricity is eliminated, the polypropylene granules fall onto the coarse screen 21. When the vibration of the housing 11 causes the coarse screen 21 to vibrate, the polypropylene granules are quickly screened on the coarse screen 21, so that larger particulate impurities are intercepted by the coarse screen 21. Qualified polypropylene granules and fine impurities fall onto the fine screen 22. Then, the vibration of the fine screen 22 screens the fine particulate impurities to the lower side of the fine screen 22, while the qualified polypropylene granules are intercepted by the fine screen 22. Thus, larger and fine particulate impurities are screened out by the coarse screen 21 and the fine screen 22. Furthermore, the vibration prevents the coarse screen 21 and the fine screen 22 from clogging, thereby improving the screening efficiency of polypropylene granules.
[0030] like Figures 3-5 As shown, the static electricity elimination assembly includes an annular ionizing air bar 13 installed at the bottom of the feed inlet 12, and an air outlet 14 is provided on the inner side wall of the annular ionizing air bar 13. The ionizing air generated by the annular ionizing air bar 13 to neutralize static electricity is blown out through the air outlet 14. The ionizing air blown out of the air outlet 14 comes into contact with the polypropylene particles conveyed by the feed inlet 12, thereby eliminating static electricity in the polypropylene particles.
[0031] Preferably, the air outlet 14 is arranged in a downward tilting manner, and the downward tilting angle of the air outlet 14 is set to 45 degrees. This increases the contact area and contact time between the ionizing air and the polypropylene particles, thereby improving the static electricity elimination effect.
[0032] like Figure 3 and Figure 4 As shown, a guide platform 23 is integrally formed on the inner side wall of the bottom wall panel of the housing 11, and the upper surface of the guide platform 23 is set in a downward inclined manner. This allows the fine particulate impurities screened out by the fine screen 22 to flow on the inclined surface of the guide platform 23, so as to facilitate the discharge of the particles.
[0033] like Figures 1-3 As shown, impurity discharge ports 24 are installed on the side wall of the housing 11 at positions corresponding to the lower ends of the coarse screen 21 and the guide platform 23, respectively. The impurity discharge ports 24 are used to discharge impurities intercepted by the coarse screen 21 and screened out by the fine screen 22. A qualified product discharge port 25 is installed on the side wall of the housing 11 at a position corresponding to the lower end of the fine screen 22. The qualified product discharge port 25 is used to discharge qualified polypropylene granules.
[0034] like Figures 3-6 As shown, a support plate 34 is fixedly connected inside the housing 11 below the coarse screen 21 and the fine screen 22, respectively. The support plate 34 has multiple discharge holes 35. This allows the material screened by the coarse screen 21 and the impurities screened by the fine screen 22 to fall onto the support plate 34 and flow downward through the discharge holes 35, ensuring that the support plate 34 does not affect the normal flow of the screened material.
[0035] like Figures 3-6 As shown, the support plate 34 is equipped with multiple elastic bouncing balls 36, the outer diameter of which is larger than the inner diameter of the discharge hole 35. When the housing 11 drives the support plate 34 to vibrate, the support plate 34 can drive the elastic bouncing balls 36 to vibrate. When the elastic bouncing balls 36 vibrate, they can collide and knock against the coarse screen 21 and fine screen 22 located at the upper end, so as to clean the screen holes by knocking against the coarse screen 21 and fine screen 22 through the elastic bouncing balls 36, thus avoiding screen clogging. In order to improve the service life and wear resistance of the elastic bouncing balls 36, the elastic bouncing balls 36 are made of wear-resistant elastic material.
[0036] like Figure 5 As shown, a pair of vibration guiding components includes a pair of support columns 37 disposed on both sides of the housing 11, and each of the support columns 37 has a groove 38 on the side facing the housing 11.
[0037] like Figure 5As shown, a slider 39 is slidably connected within the groove 38, and one end of the slider 39, located outside the groove 38, is fixedly connected to the outer wall of the housing 11. When the housing 11 vibrates up and down, it can drive the slider 39 to move up and down, thereby causing the slider 39 to slide up and down within the groove 38. By guiding the slider 39 to slide up and down through the groove 38, the up and down vibration of the housing 11 is guided.
[0038] like Figure 5 As shown, a compression spring 310 is installed inside the slide groove 38, and the compression spring 310 is installed above the slider 39. When the housing 11 drives the slider 39 to move upward, it can compress the compression spring 310, so that the compression spring 310 exerts a downward pushing force on the slider 39, so that the housing 11 can vibrate up and down through the upward driving of the drive ball 32 and the downward pushing of the compression spring 310.
[0039] In operation, the rotating disk 31 is first driven to rotate by a motor at its bottom. This rotation of the disk drives multiple driving balls 32, which in turn move in and out of the driving slots 33, causing the housing 11 to vibrate up and down. Simultaneously, the vibration guide assembly stabilizes the housing 11 during this vibration. Then, the polypropylene particles to be screened are added to the housing 11 through the feed inlet 12. As the particles enter the housing 11, the ionizing air generated by the annular ionizer 13 is ejected through the outlet 14 and comes into contact with the particles, eliminating static electricity from their surface. This prevents the particles from carrying static electricity and adhering to the coarse and fine screens 21 and 22 due to electrostatic discharge. After static electricity is eliminated, the polypropylene granules fall onto the coarse screen 21. When the vibration of the housing 11 causes the coarse screen 21 to vibrate, the polypropylene granules are quickly screened on the coarse screen 21, so that larger particulate impurities are intercepted by the coarse screen 21. Qualified polypropylene granules and fine impurities fall onto the fine screen 22. Then, the vibration of the fine screen 22 screens the fine particulate impurities to the lower side of the fine screen 22, while the qualified polypropylene granules are intercepted by the fine screen 22. Thus, larger and fine particulate impurities are screened out by the coarse screen 21 and the fine screen 22. Furthermore, the vibration prevents the coarse screen 21 and the fine screen 22 from clogging, thereby improving the screening efficiency of polypropylene granules.
[0040] 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.
[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A high-efficiency screening device for polypropylene particles, characterized in that, include: The main body includes a housing, on which a feed inlet is mounted, and at the bottom of the feed inlet is an electrostatic elimination component. The screening mechanism includes a coarse screen and a fine screen installed sequentially from top to bottom inside the housing, both of which are installed at an angle inside the housing; The vibration mechanism includes a rotating disk installed at the bottom of the housing, on which multiple driving balls are fixedly connected in a ring. Multiple driving grooves matching the driving balls are opened in a ring on the outer side wall of the bottom wall of the housing. A pair of vibration guide components are installed on the side wall of the housing.
2. The high-efficiency polypropylene particle screening device according to claim 1, characterized in that, The static elimination component includes an annular ion air bar installed at the bottom of the feed inlet, and an air outlet is provided on the inner side wall of the annular ion air bar.
3. The high-efficiency polypropylene particle screening device according to claim 2, characterized in that, The air outlet is set in a downward tilt, and the downward tilt angle of the air outlet is set to 45 degrees.
4. The high-efficiency polypropylene particle screening device according to claim 1, characterized in that, A guide platform is integrally formed on the inner side wall of the bottom wall panel of the housing, and the upper surface of the guide platform is inclined downward.
5. The high-efficiency polypropylene particle screening device according to claim 4, characterized in that, The side wall of the housing is equipped with a waste discharge port at a position corresponding to the lower end of the coarse screen and the guide platform, and the side wall of the housing is equipped with a qualified product discharge port at a position corresponding to the lower end of the fine screen.
6. The high-efficiency polypropylene particle screening device according to claim 1, characterized in that, Inside the housing, there are trays fixedly connected below the coarse screen and the fine screen, respectively, and the trays are provided with multiple discharge holes.
7. The high-efficiency polypropylene particle screening device according to claim 6, characterized in that, The pallet is equipped with multiple elastic bouncing balls, the outer diameter of which is larger than the inner diameter of the discharge hole.
8. The high-efficiency polypropylene particle screening device according to claim 1, characterized in that, A pair of vibration guiding components includes a pair of support columns disposed on both sides of the housing, and each of the support columns has a groove on the side facing the housing.
9. The high-efficiency polypropylene particle screening device according to claim 8, characterized in that, A slider is slidably connected inside the groove, and one end of the slider, located outside the groove, is fixedly connected to the outer wall of the housing.
10. The high-efficiency polypropylene particle screening device according to claim 9, characterized in that, A compression spring is installed inside the slide, and the compression spring is mounted above the slider.