Plastic particle screening device and use method thereof

Abstract

The present invention discloses a plastic particle screening device and a method of using the device to solve the above technical problems, including a filter assembly, a clamping assembly and a device housing; the filter assembly includes a crushing barrel, a feeding port, a crushing roller, a filter hole and a rod body; the crushing barrel is rotatably arranged inside the device housing, and the feeding port is arranged on a side wall of the device housing to place the plastic to be crushed in the crushing barrel. The advantage of the present invention over the prior art is that the plastic particles that do not meet the requirements are driven to the top of the crushing roller as the crushing barrel rotates, and then continue to be repeatedly crushed, effectively improving the efficiency of crushing.

Description

Technical Field

[0001] The invention relates to the field of plastic processing, and in particular to a plastic particle screening device and a use method thereof. Background Art

[0002] Plastic products are widely used after their development. Since plastics are difficult to be decomposed by tiny molecules, they need to be recycled after use and processed for recycling. The main thing is to effectively crush the plastics. The current plastic particle screening equipment has the following defects:

[0003] After the plastic is completed, in order to ensure the crushing effect, a certain filter cartridge is required for filtering, but due to the flexibility of plastic particles, the filter holes are easily blocked. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the above technical problems and provide a plastic particle screening device and a use method thereof that can effectively and automatically clean the plastic particles stuck in the filter holes.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is: a plastic particle screening device, comprising a filtering component, a clamping component and a device housing;

[0006] The filter assembly includes a crushing cylinder, a feeding port, a crushing roller, a filter hole and a rod body;

[0007] The crushing drum is rotatably arranged inside the equipment housing, and the feeding port is arranged on a side wall of the equipment housing to place the plastic to be crushed into the crushing drum;

[0008] Two matching crushing rollers are rotatably arranged in the crushing cylinder for feeding the plastic to be crushed;

[0009] The crushing cylinder is provided with M groups of strip-shaped filter holes along the circumferential direction, each group of filter holes is provided with N filter holes, and both M and N are positive integers greater than:

[0010] The rod body can slide in the filtering hole;

[0011] The clamping assembly is arranged at the upper end of the equipment housing so that the rod body temporarily stops sliding when it moves above the crushing roller, and the filter holes slide outside the rod body at the same time, and the gap between adjacent rod bodies is equal to the filter hole width.

[0012] Preferably, M fixing plates are provided along the circumferential direction on the outside of the crushing cylinder, and a first support rod is connected to one end of the rod body in the filter holes of the same group on the outside of the crushing cylinder, a second support rod is connected to one side of the first support rod through an elastic member, an arc-shaped fixing bar is connected between two adjacent fixing plates, a through hole is provided on the first support rod and can be arranged on the outside of the fixing bar, a first protrusion is provided in the through hole, and a second protrusion that can be squeezed with the first protrusion is provided on the inner wall of the fixing bar.

[0013] Preferably, an arc-shaped slide rail is connected between adjacent fixed plates, one end of the first support rod is connected with a sliding tube that can be slidably mounted on the outside of the arc-shaped slide rail, one side of the fixed plate is connected with a first permanent magnet mounted on the outside of the arc-shaped slide rail, one end of the sliding tube is made of a magnetic material that can attract the first permanent magnet, and the other end of the sliding tube is connected with a first spring mounted on the outside of the arc-shaped slide rail via a fixing ring, the first spring is connected to another adjacent fixed plate, and one of the filter holes in the same group of filter holes is connected with a push switch at the end away from its corresponding rod body.

[0014] Preferably, a plurality of third protrusions are provided on one side of the rod body, and a triangular prism capable of sliding in the filter hole is connected to the other side of the rod body, and the triangular prism squeezes and clamps the plastic particles in the crushing barrel when sliding in the crushing barrel.

[0015] Preferably, the clamping assembly includes a pushing rod, a sliding column and a push rod, one end of the equipment housing is connected to a push rod via the sliding column, one side of the fixed plate is provided with a groove matching the pushing rod, so that the pushing rod can slide in the groove, the pushing rod can be against the second support rod, one end of the pushing rod is connected to a sliding plate slidably mounted on the outside of the sliding column, the outer side of the sliding column is provided with a second spring, and the two ends of the second spring are respectively connected to the sliding plate and the push rod.

[0016] Preferably, the clamping assembly further includes a second permanent magnet and an electromagnet, the electromagnet is arranged on the lower side of the push rod, and the second permanent magnet is connected to the upper side of the sliding plate.

[0017] Preferably, the crushing cylinder includes a circular cylinder and a truncated cone-shaped cylinder, the truncated cone-shaped cylinder includes a first end face and a second end face, the area of ​​the second end face is larger than that of the first end face, the second end face of the truncated cone-shaped cylinder is connected to one end of the truncated cone-shaped cylinder, the outer side of one end of the truncated cone-shaped cylinder located at the first end face is provided with a first fixing ring connected to the equipment housing through a bearing, and the outer side of one end of the circular cylinder is provided with a second fixing ring connected to the equipment housing through a bearing.

[0018] Preferably, a U-shaped plate is connected to the outer side of the equipment housing, a first driving motor is connected to the outer side of the U-shaped plate, the output end of the first driving motor penetrates through the U-shaped plate and is connected with a first gear, one end of each of the two crushing rollers is connected with a rotating shaft that penetrates through the equipment housing, and two meshing second gears are respectively connected to the outer ends of the two rotating shafts on the outer side of the equipment housing, and a third gear meshing with the first gear is connected to the outer side of one of the rotating shafts.

[0019] Preferably, a second driving motor is connected to the outer side of the equipment housing, the output end of the second driving motor rotatably penetrates through the equipment housing and is connected with a fourth gear, and a toothed ring meshing with the fourth gear is connected to the outer side of the frustum-shaped cylinder.

[0020] In some embodiments, the present application also proposes a method for using a plastic particle screening device:

[0021] Step 1, put the plastic to be crushed into the upper side of the two crushing rollers in the crushing cylinder through the feeding port;

[0022] Step 2, crush the plastic by the rotation of the crushing rollers, and the crushed plastic particles will fall to the lower side of the crushing rollers;

[0023] Step 3, filter the plastic particles as the crushing cylinder rotates, so that the plastic particles meeting the requirements pass through the filter holes 5;

[0024] Step 4, as the crushing cylinder rotates, the larger plastic particles cannot pass through the gaps between the rods and are repeatedly driven to the upper side of the crushing rollers as the rods 6 rotate;

[0025] Step 5, when the larger plastic particles move to the upper side of the crushing rollers, the filter holes slide on the outer side of the rods under the action of the clamping assembly to push the plastic particles blocking the filter holes, and at the same time, the larger plastic particles fall into the crushing rollers for repeated crushing.

[0026] The advantages of the present invention compared with the prior art are as follows:

[0027] 1. Through the feeding port, the plastic to be processed can be put into the inner side of the upper end of the crushing rollers. The plastic is crushed by the opposite rotation of the upper sides of the two crushing rollers. The crushed plastic particles can be filtered through the filter holes. In addition, the plastic particles that do not meet the requirements are driven to the upper side of the crushing rollers as the crushing cylinder rotates, and then continue to be repeatedly crushed, effectively improving the crushing efficiency;

[0028] 2. The plastic that meets the requirements can pass through the gaps between the rods and the filter holes, while the plastic particles that do not meet the requirements and are larger remain inside the crushing cylinder and between the filter holes and the rod. As the crushing cylinder rotates, the rod can be driven to rotate, and the plastic that does not meet the requirements is carried to the top of the crushing roller, so that the plastic that does not meet the requirements is dumped to the upper side of the crushing roller for repeated crushing, thereby improving the crushing effect. The third protrusion on the rod increases the friction of the plastic particles on the rod, thereby reducing the probability of the plastic particles falling on the rod before moving to the upper side of the rod;

[0029] 3. When the rod body moves to the upper side of the rod body, the second support rod automatically abuts against the push rod. As the crushing barrel continues to rotate, the filter hole is driven to rotate, so that the rod body slides relative to the filter hole. At the same time, the triangular prism automatically slides relative to the filter hole, thereby pushing the plastic particles stuck in the filter hole, so that the plastic particles push and slide into the crushing barrel, effectively cleaning the stuck and blocked plastic particles in the filter hole;

[0030] 4. After the rod body slides in the filter hole to clean the plastic particles, until the rod body and the push switch are squeezed, the push switch generates an electrical signal to be transmitted to the controller, and the controller automatically controls the electromagnet to open, generating a magnetic field to generate suction to the second permanent magnet, so that the push rod is instantly lifted, so that the push rod is no longer against the second support rod, and the second support rod, the elastic member and the first support rod are reset through the action of the first spring and the sliding tube, so that the sliding tube and the first permanent magnet are attracted, at this time, the rod body no longer squeezes the push switch, and the push switch generates an electrical signal again to be transmitted to the controller, and the controller can control the electromagnet to close again, so that the push rod can fall and reset through the action of the second spring, so as to facilitate the push operation of the adjacent second support rod through the push rod;

[0031] 5. When the rod body slides in the filter cartridge, the rod body slides through the through hole of the fixing bar. At the same time, through the action of the second protrusion and the second protrusion, as well as the elastic action of the elastic member, the first support rod drives the rod body to generate a certain shaking action, so as to quickly shake off the plastic particles that do not meet the requirements accumulated on the rod body;

[0032] 6. Through the structure of the truncated cone and the circular cylinder, the feeding port is set at one end close to the truncated cone. After the plastic fed into the feeding port is crushed, most of the plastic particles fall into the upper side of the crushing roller inside the truncated cone. Through the structure of the truncated cone, the plastic particles slide into the circular cylinder. When the plastic particles in the circular cylinder that need to be re-crushed are dumped, they are dumped into the part of the crushing roller in the circular cylinder, avoiding the repeated accumulation of the plastic when it is fed into the feeding port, and then causing the plastic to slip on both sides of the crushing roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0034] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from another viewing angle;

[0035] Figure 3 It is a schematic diagram of the internal structure of the housing of the device of the present invention;

[0036] Figure 4 It is a schematic diagram of the three-dimensional structure of the crushing barrel of the present invention;

[0037] Figure 5 This is a schematic diagram of the three-dimensional structure of the crushing barrel of the present invention from another perspective;

[0038] Figure 6 It is a schematic diagram of the structure of one side of the crushing barrel of the present invention;

[0039] Figure 7 It is a schematic diagram of the structure of the crushing roller of the present invention;

[0040] Figure 8 The present invention Figure 7 A schematic diagram of the enlarged structure of the middle A position;

[0041] Fig. 9 It is a schematic diagram of the structure of the other side of the crushing barrel of the present invention;

[0042] Fig.10 The present invention Fig. 9 Schematic diagram of the cross-sectional structure at the AA position;

[0043] Fig.11 The present invention Fig.10 A schematic diagram of the enlarged structure of position B in the middle;

[0044] Fig.12 The present invention Figure 5 Schematic diagram of the enlarged structure at position C in the middle.

[0045] As shown in the figure: 1. Filter component; 2. Crushing cylinder; 3. Feeding port; 4. Crushing roller; 5. Filter holes; 6. Rod body; 7. Fixed plate; 8. First support rod; 9. Elastic member; 10. Second support rod; 11. Fixed strip; 12. Through hole; 13. First protrusion; 14. Second protrusion; 15. Arc-shaped slide rail; 16. Sliding tube; 17. First permanent magnet; 18. First spring; 19. Press switch; 20. Third protrusion; 21. Triangular prism; 22. Pushing rod; 23. Sliding column; 24. Top rod; 25. Sliding plate; 26. Second spring; 27. Second permanent magnet; 28. Electromagnet; 29. Circular cylinder; 30. Frustum-shaped cylinder; 31. First fixing ring; 32. Second fixing ring; 33. C-shaped plate; 34. First driving motor; 35. First gear; 36. Second gear; 37. Third gear; 38. Second driving motor; 39. Fourth gear; 40. Tooth ring; 41. Clamping component; 42. Groove; 43. Equipment housing.

[0046] For a further understanding of the accompanying drawings, which form a part of the description of the present invention and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. Detailed implementation manners

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "transverse", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, the term "comprising" and any variation thereof are intended to cover non-exclusive inclusion.

[0048] Please refer to the attached Figure 1-12 , a plastic particle screening device, comprising a filter component 1, a clamping component 41 and an equipment housing 43;

[0049] The filter component 1 includes a crushing cylinder 2, a feeding port 3, a crushing roller 4, filter holes 5 and a rod body 6;

[0050] The crushing cylinder 2 is rotatably arranged inside the equipment housing 43, and the feeding port 3 is arranged on one side wall of the equipment housing 43 for placing the plastic to be crushed into the crushing cylinder 2;

[0051] Two matching crushing rollers 4 are rotatably arranged in the crushing cylinder 2 for feeding the plastic to be crushed;

[0052] The crushing cylinder 2 is provided with M groups of strip-shaped filter holes 5 along the circumferential direction, wherein each group of filter holes 5 is provided with N filter holes 5, and both M and N are positive integers greater than 1:

[0053] The rod body 6 can slide in the filter hole 5;

[0054] The clamping assembly 41 is arranged at the upper end of the equipment housing 43, so that the rod body 6 temporarily stops sliding when it moves to the top of the crushing roller 4, and the filter holes 5 slide outside the rod body 6, and the gap between adjacent rod bodies 6 is equal to the width of the filter holes 5;

[0055] The plastic to be processed can be put into the inner side of the upper end of the crushing roller 4 through the feeding port 3, and the plastic is crushed by the upper sides of the two crushing rollers 4 rotating towards each other. The plastic particles generated by the crushing can be automatically filtered through the filter holes 5. In addition, the plastic particles that do not meet the requirements are driven to the top of the crushing roller 4 through the rod body 6 as the crushing cylinder 2 rotates, and then continue to be repeatedly crushed, thereby effectively improving the crushing efficiency. The plastic that meets the requirements can pass through the gap between the rod bodies 6 and the filter holes 5, and the plastic particles that do not meet the requirements and have larger particles remain in the crushing cylinder 2. At the same time, the plastic particles remain between the filter holes 5 and the rod body 6. As the crushing cylinder 2 rotates, the rod body 6 can be driven to rotate, and the plastic that does not meet the requirements is carried to the top of the crushing roller 4, so that the plastic that does not meet the requirements is dumped on the upper side of the crushing roller 4 for repeated crushing, thereby improving the crushing effect.

[0056] In some specific embodiments, M fixing plates 7 are provided on the outer side of the crushing cylinder 2 in the circumferential direction, and a first support rod 8 is connected to one end of the rod body 6 in the filtering hole 5 of the same group on the outer side of the crushing cylinder 2, and a second support rod 10 is connected to one side of the first support rod 8 through an elastic member 9, and an arc-shaped fixing bar 11 is connected between two adjacent fixing plates 7, and a through hole 12 that can be arranged on the outer side of the fixing bar 11 is provided on the first support rod 8, and a first protrusion 13 is provided in the through hole 12, and an inner wall of the fixing bar 11 is provided with a first protrusion 13 that can be connected with the first The second protrusion 14 squeezed by the protrusion 13 slides through the through hole 12 through the fixing bar 11 during the sliding of the rod body 6 in the filter cartridge. At the same time, through the action of the second protrusion 14 and the second protrusion 14 and the elastic action of the elastic member 9, the first support rod 8 drives the rod body 6 to produce a certain shaking effect, so as to quickly shake off the plastic particles that do not meet the requirements accumulated on the rod body 6. In addition, if there are plastic particles stuck between adjacent rod bodies 6, it can also play the effect of shaking off the plastic particles stuck between adjacent rod bodies 6.

[0057] In some specific embodiments, an arc-shaped slide rail 15 is connected between adjacent fixed plates 7, one end of the first support rod 8 is connected with a sliding tube 16 that can be slid on the outside of the arc-shaped slide rail 15, one side of the fixed plate 7 is connected with a first permanent magnet 17 that is sleeved on the outside of the arc-shaped slide rail 15, one end of the sliding tube 16 is made of a magnetic material that can attract the first permanent magnet 17, and the other end of the sliding tube 16 is connected with a first spring 18 that is sleeved on the outside of the arc-shaped slide rail 15 through a fixing ring, the first spring 18 is connected to another adjacent fixed plate 7, and one of the filter holes 5 in the same group of filter holes 5 is connected with a press switch 19 at the end away from its corresponding rod body 6.

[0058] In some specific embodiments, a plurality of third protrusions 20 are provided on one side of the rod body 6, and a triangular prism 21 capable of sliding in the filter hole 5 is connected to the other side of the rod body 6. When the triangular prism 21 slides in the crushing barrel 2, it squeezes and clamps the plastic particles in the crushing barrel 2. Through the third protrusions 20 on the rod body 6, the friction force of the plastic particles on the rod body 6 is increased, thereby reducing the probability of the plastic particles falling off when they do not move to the upper side of the rod body 6.

[0059] In some specific embodiments, the clamping assembly 41 includes a push rod 22, a sliding column 23 and a push rod 24. One end of the equipment housing 43 is connected to the push rod 24 through the sliding column 23. One side of the fixed plate 7 is provided with a groove 42 that matches the push rod so that the push rod 22 can slide in the groove. The push rod 22 can be abutted against the second support rod 10. One end of the push rod 22 is connected to a sliding plate 25 that is slidably sleeved on the outside of the sliding column 23. The outer side of the sliding column 23 is sleeved with a second spring 26. The two ends of the second spring 26 are respectively connected to the sliding plate 25 and the push rod 24.

[0060] In some specific embodiments, the clamping assembly 41 further includes a second permanent magnet 27 and an electromagnet 28, wherein the electromagnet 28 is disposed on the lower side of the push rod 24, and the second permanent magnet 27 is connected to the upper side of the sliding plate 25;

[0061] After the cleaning of plastic particles by the sliding of the rod body 6 in the filtering holes 5 is completed, until the rod body 6 presses against the push switch 19, the push switch 19 generates an electrical signal and transmits it to the controller. The controller automatically controls the electromagnet 28 to open, generating a magnetic field to attract the second permanent magnet 27, causing the ejector rod 22 to be instantly lifted, so that the ejector rod 22 no longer abuts against the second support rod 10. Through the action of the first spring 18 and in cooperation with the sliding tube 16, the second support rod 10, the elastic member 9, and the first support rod 8 are reset, and the sliding tube 16 attracts the first permanent magnet 17. At this time, the rod body 6 no longer presses against the push switch 19, and the push switch 19 generates an electrical signal again and transmits it to the controller. The controller can control the electromagnet 28 to close again, enabling the ejector rod 22 to fall back to its original position under the action of the second spring 26.

[0062] In some specific embodiments, the crushing cylinder 2 includes a circular cylinder 29 and a frustum-shaped cylinder 30. The frustum-shaped cylinder 30 includes a first end face (upper bottom face) and a second end face (lower bottom face). The area of the second end face is larger than that of the first end face. One end of the frustum-shaped cylinder 30 where the second end face is located (the end face with a larger area) is connected and communicated with one end of the frustum-shaped cylinder 30. On the outside of the first end of the frustum-shaped cylinder 30, a first fixing ring 31 connected to the equipment housing 43 is provided through a bearing. On the outside of one end of the circular cylinder 29, a second fixing ring 32 connected to the equipment housing 43 is provided through a bearing; through the structure of the cooperation between the frustum-shaped cylinder 30 and the circular cylinder 29, the feeding port 3 is provided near one end of the frustum-shaped cylinder 30. After the plastic fed into the feeding port 3 is crushed, most of the plastic particles fall onto the upper side of the crushing roller 4 inside the frustum-shaped cylinder 30. Through the structure of the frustum-shaped cylinder 30, the plastic particles slide into the circular cylinder 29. When the plastic particles that need to be re-crushed in the prototype cylinder are poured, they are poured onto the part of the crushing roller 4 inside the circular cylinder 29, avoiding the situation of repeated accumulation when the plastic is fed at the feeding port 3 position, and further preventing the plastic from sliding off both sides of the crushing roller 4.

[0063] In some specific embodiments, a U-shaped plate 33 is connected to the outside of the equipment housing 43. A first driving motor 34 is connected to the outside of the U-shaped plate 33. The output end of the first driving motor 34 penetrates through the U-shaped plate 33 and is connected with a first gear 35. One end of each of the two crushing rollers 4 is connected with a rotating shaft that penetrates through the equipment housing 43. One end of each of the two rotating shafts outside the equipment housing 43 is respectively connected with a second gear 36 that meshes with each other. A third gear 37 that meshes with the first gear 35 is connected to the outside of one of the rotating shafts. By turning on the first driving motor 34, the rotation of the first gear 35 is driven, and in cooperation with the third gear 37, the rotation of one of the second gears 36 and the rotation of the rotating shaft connected to the third gear 37 are driven. In cooperation with the other second gear 36, the rotation of the rotating shaft is driven. The rotation of the two rotating shafts drives the rotation of the two crushing rollers 4.

[0064] In some specific embodiments, the outer side of the device housing 43 is connected to a drive motor 2 38, and the output end of the drive motor 2 38 rotates through the device housing 43 and is connected to a gear 4 39, and the outer side of the truncated cone 30 is connected to a gear ring 40 meshing with the gear 4 39. The rotation of the drive motor 2 38 drives the gear 4 39 to rotate, and then the rotation of the gear ring 40 drives the truncated cone 30 to rotate, and then the crushing cylinder 2 is driven to rotate.

[0065] In some specific embodiments, a controller (not shown in the figure) is further included, and the electromagnet 28, the drive motor 1 34, the drive motor 2 38 and the push switch 19 are electrically connected to the controller respectively.

[0066] In some specific embodiments, the elastic member 9 may be a rubber pad, and in some other embodiments, an elastic telescopic rod may also be used.

[0067] In some specific embodiments, the lower end of the equipment housing 43 is connected to a conical discharge barrel to facilitate discharge.

[0068] In some specific embodiments, the feed port is provided as a feed hopper connected to the crushing drum 2, so as to facilitate feeding through the feed hopper.

[0069] In some embodiments, a method for using the plastic particle screening device is also provided.

[0070] Step 1, the plastic to be crushed is fed into the upper side of two crushing rollers 4 in the crushing drum 2 through the feeding port 3;

[0071] Step 2, the plastic is crushed by the rotation of the crushing roller 4, and the crushed plastic particles fall to the lower side of the crushing roller 4;

[0072] Step 3, the plastic particles are filtered as the crushing drum 2 rotates, so that the plastic particles meeting the requirements are filtered through the filter holes 5;

[0073] Step 4: As the crushing drum 2 rotates, the larger plastic particles cannot pass through the gap between the rods 6 and are driven to the top of the crushing roller 4 as the rods 6 rotate repeatedly;

[0074] Step 5, when the larger plastic particles move to the top of the crushing roller 4, the filter hole 5 slides on the outside of the rod body 6 through the action of the clamping assembly 41 to push and clean the plastic particles blocked in the filter hole 5, and at the same time, the larger plastic particles fall into the crushing roller 4 and are repeatedly crushed.

[0075] The specific implementation process is as follows:

[0076] The plastic to be processed can be fed into the inner side of the upper end of the crushing roller 4 through the feeding port 3, and the plastic is crushed by the upper sides of the two crushing rollers 4 rotating toward each other. The plastic particles generated by the crushing can be filtered through the filter holes 5. At the same time, the sliding of the plastic particles is accelerated by the rotation of the crushing cylinder 2 to accelerate the filtration. If the plastic particles are small and meet the requirements, they can be filtered out through the filter holes 5.

[0077] The plastic particles that do not meet the crushing requirements are driven to the top of the crushing roller 4 as the crushing drum 2 rotates. Since the gap between the adjacent rods 6 is equal to the width of the filter holes 5, the particles that cannot pass through the filter holes 5 are unlikely to pass through the gap between the adjacent rods 6. Therefore, the rotation of the crushing roller 4 drives the rotation of the rod 6, thereby driving the larger plastic particles to move up to the top of the crushing roller 4 as the crushing drum 2 rotates. When the larger plastic particles move up to the top of the crushing roller 4 as the crushing drum 2 rotates, they are poured onto the crushing roller 4 for repeated crushing.

[0078] During this process, when the rod body 6 moves to the upper side of the crushing roller 4, the second support rod 10 automatically abuts against the push rod 22. As the crushing cylinder 2 continues to rotate, the filter hole 5 is driven to rotate, so that the rod body 6 slides relatively in the filter hole 5 (when the second support rod 10 has not yet abutted against the push rod 22, the sliding tube 16 is magnetically fixed on the first permanent magnet 17, so that the second support rod 10, the first support rod 8 and the rod body 6 are limited, so that the position of the rod body 6 in the filter hole 5 is limited), and at the same time, the triangular prism 21 automatically slides relatively in the filter hole 5, thereby pushing the plastic particles clamped in the filter hole 5, so that the plastic particles are pushed and slide into the crushing cylinder 2, and the clamped and blocked plastic particles in the filter hole 5 are effectively cleaned;

[0079] After the rod body 6 slides in the filter hole 5 to clean the plastic particles, until the rod body 6 and the push switch 19 are squeezed, the push switch 19 generates an electrical signal to be transmitted to the controller, and the controller automatically controls the electromagnet 28 to open, generating a magnetic field to generate suction to the second permanent magnet 27, so that the push rod 22 is instantly lifted, so that the push rod 22 is no longer against the second support rod 10, and the second support rod 10, the elastic member 9 and the first support rod 8 are reset through the action of the first spring 18 and the sliding tube 16, so that the sliding tube 16 and the first permanent magnet 17 are attracted, at this time, the rod body 6 no longer squeezes the push switch 19, and the push switch 19 generates an electrical signal again to be transmitted to the controller, and the controller can control the electromagnet 28 to be closed again, so that the push rod 22 can fall down and reset through the action of the second spring 26;

[0080] The above method is used to clean the plastic particles stuck in the same group of filter holes 5, and repeatedly crush the larger plastic particles on the rod body 6 corresponding to the same group of filter holes 5, and the plastic particles in different groups of filter holes 5 are cleaned and the larger plastic particles on the rod body 6 corresponding to different groups of filter holes 5 are repeatedly crushed.

[0081] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0082] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A plastic particle screening device, characterized in that: It comprises a filter assembly (1), a clamping assembly (41) and a device housing (43); The filtering assembly (1) comprises a crushing cylinder (2), a feeding port (3), a crushing roller (4), a filtering hole (5) and a rod body (6); The crushing cylinder (2) is rotatably disposed inside the equipment housing (43), and the feeding port (3) is disposed on a side wall of the equipment housing (43) so as to be used for placing plastic to be crushed into the crushing cylinder (2); Two matching crushing rollers (4) are rotatably arranged in the crushing cylinder (2) for feeding plastic to be crushed; The crushing cylinder (2) is provided with M groups of strip-shaped filter holes (5) along the circumferential direction, wherein each group of filter holes (5) is provided with N filter holes (5), and both M and N are positive integers greater than 1: The rod body (6) is capable of sliding in the filter hole (5); The clamping assembly (41) is arranged at the upper end of the equipment housing (43) so that the rod body (6) temporarily stops sliding when it moves above the crushing roller (4), and at the same time, the filter holes (5) slide outside the rod body (6), and the gap between adjacent rod bodies (6) is equal to the width of the filter holes (5); M fixing plates (7) are provided on the outer side of the crushing cylinder (2) along the circumferential direction; a rod body (6) in the same group of filter holes (5) is connected to a first support rod (8) at one end of the outer side of the crushing cylinder (2); a second support rod (10) is connected to one side of the first support rod (8) via an elastic member (9); an arc-shaped fixing strip (11) is connected between two adjacent fixing plates (7); a through hole (12) suitable for the fixing strip (11) to pass through is provided on the first support rod (8); a first protrusion (13) is provided in the through hole (12); and a second protrusion (14) capable of being pressed against the first protrusion (13) is provided on the inner wall of the fixing strip (11); An arc-shaped slide rail (15) is connected between adjacent fixed plates (7); one end of the second support rod (10) is connected with a slide tube (16) that can be sleeved on the outside of the arc-shaped slide rail (15) and slide; one side of the fixed plate (7) is connected with a first permanent magnet (17) sleeved on the outside of the arc-shaped slide rail (15); one end of the slide tube (16) is made of a magnetic material that can attract the first permanent magnet (17); the other end of the slide tube (16) is connected with a first spring (18) sleeved on the outside of the arc-shaped slide rail (15) through a fixing ring; the first spring (18) is connected to another adjacent fixed plate (7); one of the filter holes (5) in the same group of filter holes (5) is connected with a push switch (19) at the end away from its corresponding rod body (6); The clamping assembly (41) includes a pushing rod (22), a sliding column (23) and a ejector rod (24). One end of the equipment housing (43) is connected with an ejector rod (24) through a sliding column (23). One side of the fixing plate (7) is provided with a groove (42) matching with the pushing rod, so that the pushing rod (22) can slide in the groove. The pushing rod (22) can abut against the second support rod (10). One end of the pushing rod (22) is connected with a sliding plate (25) which is sleeved outside the sliding column (23). A second spring (26) is sleeved outside the sliding column (23). Two ends of the second spring (26) are respectively connected with the sliding plate (25) and the ejector rod (24). The clamping assembly (41) further includes a second permanent magnet (27) and an electromagnet (28). The electromagnet (28) is arranged on the lower side of the ejector rod (24). The second permanent magnet (27) is connected to the upper side of the sliding plate (25).

2. The device according to claim 1, characterized in that One side of the rod body (6) is provided with a plurality of third protrusions (20). The other side of the rod body (6) is connected with a triangular prism (21) which can slide in the filter hole (5). When the triangular prism (21) slides in the filter hole (5), it squeezes and clamps the plastic particles in the crushing cylinder (2).

3. The device according to claim 2, characterized in that The crushing cylinder (2) includes a circular cylinder (29) and a frustum-shaped cylinder (30). The frustum-shaped cylinder (30) includes a first end face and a second end face. The area of the second end face is larger than that of the first end face. The second end face of the frustum-shaped cylinder (30) is communicated with one end of the frustum-shaped cylinder (30). One end outside the first end face of the frustum-shaped cylinder (30) is connected with a first fixing ring (31) connected to the equipment housing (43) through a bearing. One end outside the circular cylinder (29) is connected with a second fixing ring (32) connected to the equipment housing (43) through a bearing.

4. The device according to claim 3, characterized in that The outside of the equipment housing (43) is connected with an L-shaped plate (33). The outside of the L-shaped plate (33) is connected with a first driving motor (34). The output end of the first driving motor (34) penetrates through the L-shaped plate (33) and is connected with a first gear (35). One end of each of the two crushing rollers (4) is connected with a rotating shaft which rotates through the equipment housing (43). One ends of the two rotating shafts outside the equipment housing (43) are respectively connected with meshing second gears (36). One of the rotating shafts is connected with a third gear (37) meshing with the first gear (35).

5. The device according to claim 4, characterized in that The outside of the equipment housing (43) is connected with a second driving motor (38). The output end of the second driving motor (38) rotates through the equipment housing (43) and is connected with a fourth gear (39). The outside of the frustum-shaped cylinder (30) is connected with a toothed ring (40) meshing with the fourth gear (39).

6. A method for using a plastic particle screening device as described in claim 1, characterized in that: Step 1, put the plastic to be crushed into the upper side of the two crushing rollers (4) in the crushing cylinder (2) through the feeding port (3). Step 2, crushing the plastic by rotating the crushing roller (4), and the crushed plastic particles fall to the lower side of the crushing roller (4); Step 3, filtering the plastic particles as the crushing cylinder (2) rotates, so that the plastic particles that meet the requirements are filtered through the filter holes (5); Step 4: As the crushing drum (2) rotates, the larger plastic particles will not be able to pass through the gap between the rod bodies (6) and will be repeatedly driven to the top of the crushing roller (4) as the rod bodies (6) rotate; Step 5, when the larger plastic particles move to the top of the crushing roller (4), the filter hole (5) slides on the outside of the rod body (6) through the action of the clamping assembly (41) to push and clean the plastic particles stuck in the filter hole (5), and at the same time, the larger plastic particles fall into the crushing roller (4) and are repeatedly crushed.

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