Plastic particle screening device

Abstract

The invention discloses a plastic particle screening device, comprising two symmetrically arranged support plates, a screening cylinder 2 is rotatably arranged between the two support plates, a screening cylinder 1 is rotatably arranged on the surface of the screening cylinder 2, a plurality of neatly arranged screening holes 2 are opened in an annular shape on the surface of the screening cylinder 2, three groups of screening holes 1 are opened in an annular shape on the surface of the screening cylinder 1, the three groups of screening holes 1 are divided into small holes, medium holes and large holes, the diameter of the screening holes 2 is the same as that of the large-hole screening holes 1, and the advantage of the invention is that the device can thoroughly screen plastic particles of different volume sizes, and effectively improve the quality of the plastic particles in subsequent processing.

Description

Technical Field

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

[0002] Different plastic sheets are made by mixing different plastic raw materials, melting them after mixing evenly, and then molding. The plastic raw materials need to be crushed and mixed. Some of the mixed raw materials have large particles, which is not conducive to the next step of melting. Therefore, in production, it is necessary to screen out the plastic particles with larger particles. Most of the existing plastic particle screening devices do not control the feeding flow rate, nor do they set the material guide buffer, so that excessive feeding of plastic particles can easily cause the screen to be blocked, and the screening outlet does not have a further screen setting, resulting in some plastic particles that do not meet the requirements being mixed in during the screening process, which is not conducive to the screening of plastic particles and easily affects the normal operation of the equipment.

[0003] In the prior art, a plastic particle screening device with patent number CN109291306A includes a box body, the box body is a cavity structure, the bottom end of the box body is provided with an oscillating mechanism, the oscillating mechanism includes a base plate, the middle position of the base plate is provided with a groove, the grooves are respectively provided with a support plate 1 and a support plate 2, the support plate 1 is provided with a rotating rod 1 on the bottom side away from the support plate 2, the rotating rod 1 extends into a sleeve 1 located in the base plate, the support plate 2 is provided with a rotating rod 2 on the bottom side away from the support plate 1, and the other end of the rotating rod 2 passes through the sleeve 2 located in the base plate and is connected to a rotating motor on one side of the base plate. .

[0004] When the above device screens the plastic particles, it screens the plastic particles by vibration. However, during the vibration process, some smaller particles will be brought out to the discharge port along with larger plastic particles, which will result in incomplete screening and affect the subsequent use of the plastic particles. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a plastic particle screening device, which can thoroughly screen plastic particles of different sizes and effectively improve the quality of the plastic particles during subsequent processing.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: a plastic particle screening device, comprising two symmetrically arranged support plates 1, a screening cylinder 2 is rotatably arranged between the two support plates 1, a screening cylinder 1 is rotatably arranged on the surface of the screening cylinder 2, a plurality of neatly arranged screening holes 2 are opened in a ring shape on the surface of the screening cylinder 2, three groups of screening holes 1 are opened in a ring shape on the surface of the screening cylinder 1, the three groups of screening holes 1 are divided into small holes, medium holes and large holes, and the diameter of the screening hole 2 is the same as that of the large hole of the screening hole 1.

[0007] Optionally, a material distribution frame is fixedly arranged between the two support plates 1 and at a lower position away from the screening drum 1, and the material distribution frame has three outlets.

[0008] Optionally, a baffle is rotatably arranged in the material distribution frame, a motor five is fixedly arranged on the outer side surface of the support plate one, and an output shaft of the motor five passes through the support plate one and the material distribution frame and is fixed to the baffle.

[0009] Optionally, a support plate 2 is fixedly provided on the outer side surface of the support plate 1, a circular feeding barrel is fixedly provided between the two support plates 2, the circular feeding barrel passes through the screening barrel 2, and a feeding frame with an upward opening is fixedly provided on the surface of one end of the feeding barrel, and a discharge port is provided on the lower surface of the feeding barrel located inside the screening barrel 2.

[0010] Optionally, a spiral feeding piece is rotatably arranged inside the feeding barrel, and a scraper 2 is symmetrically fixedly arranged on the surface of the feeding barrel near the discharge port, a groove 2 is provided at the outer end of the scraper 2, and a part of the lower end surface of the scraper 2 is in contact with the inner wall of the screening barrel 2.

[0011] Optionally, a cleaning rod is rotatably arranged in the second groove, and a brush is arranged on the surface of the cleaning rod.

[0012] Optionally, a U-shaped scraper 1 is fixedly provided on the lower surface of the feeding cylinder near the discharge port, and the U-shaped scraper 1 is located between the two scrapers 2, and the lower end of the U-shaped scraper 1 contacts the inner wall of the screening cylinder 2.

[0013] Optionally, a bracket is fixedly provided between the two support plates 1 at a position away from the screening drum 2, a motor seat is symmetrically fixedly provided on the surface of the bracket, a motor 1 is fixedly provided inside the motor seat, and a gear 2 is fixedly provided on the surface of the output shaft of the motor 1.

[0014] Optionally, a gear three is fixedly provided on one end surface of the screening drum two, a gear two is fixedly provided on the other end surface of the screening drum one, and the gear one on the output shaft surface of the motor one is respectively meshed with the gear two and the gear three.

[0015] In summary, compared with the prior art, the plastic particle screening device provided by the present invention has the following beneficial effects:

[0016] In the present invention, the plastic particles are graded and screened by using three groups of screening cylinders with different apertures, so that the plastic particles can be thoroughly screened according to volume, and the quality of the plastic particles in subsequent processing can be effectively improved;

[0017] In the present invention, the cleaning rod is used to clean the sieve holes 2 on the surface of the sieve cylinder 2, which can effectively prevent plastic particles from clogging the holes. At the same time, the U-shaped scraper 1 can better break up the plastic particles accumulated in the sieve cylinder 2, further improving the screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 It is a schematic diagram of the structure of the screening cylinder 1 and the screening cylinder 2 of the present invention;

[0021] Figure 4 It is an exploded view of the screening cylinder 1 and the screening cylinder 2 of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the bottom of some parts of the present invention;

[0023] Figure 6 The structure of some parts of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 7 The structure of some parts of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 8 It is a structural schematic diagram of the material distribution frame of the present invention;

[0026] Fig. 9 It is a schematic diagram of the cross-sectional structure of the material distribution frame of the present invention;

[0027] Fig.10 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0028] Fig.11 It is a schematic diagram of the cross-sectional structure of some parts of the present invention;

[0029] Fig.12 It is a schematic diagram of the enlarged structure of A of the present invention;

[0030] In the figure: 1. Support plate 1; 2. Support plate 2; 3. Screening cylinder 1; 31. Screening hole 1; 32. Gear 2; 4. Screening cylinder 2; 41. Gear 3; 42. Screening hole 2; 5. Material distribution frame; 11. Bracket; 12. Motor seat; 13. Motor 1; 14. Gear 1; 21. Feeding cylinder; 211. Motor 2; 212. Motor 3; 213. Spiral feeding piece; 214. Feeding port; 215. Groove 1; 216. Feeding frame; 217. Cleaning rod; 218. Motor 4; 22. U-shaped scraper 1; 23. Scraper 2; 231. Groove 2; 51. Motor 5; 52. Baffle. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] refer to Figure 1-12 A plastic particle screening device comprises two symmetrically arranged support plates 1, a screening cylinder 2 4 is rotatably arranged between the two support plates 1, a surface of the screening cylinder 2 4 is provided with a plurality of neatly arranged screening holes 2 42 in an annular shape, a screening cylinder 3 is rotatably arranged on the surface of the screening cylinder 2 4, and a surface of the screening cylinder 3 is provided with three groups of screening holes 31 in an annular shape.

[0033] The three groups of screening holes 31 are divided into small holes, medium holes and large holes. The size of screening hole 2 42 is the same as the diameter of the large holes in screening hole 1 31. The screening holes 31 with medium holes are used to screen plastic particles with standard particle diameters, and the small and large holes are used to screen unqualified plastic particles. This is because if the particle volume is larger than the standard, it may mean that the particles are too rough or too large, which may affect their use effect in subsequent production processes. Similarly, if the particle volume is smaller than the standard, it may mean that the particles are too fine or too small, which may also affect their use effect. Therefore, whether the particle volume is larger or smaller than the standard, the melting and granulation process must be repeated to ensure that it meets the production requirements and use standards. After the three are screened out, plastic particles with a uniform diameter can better meet various production and use needs.

[0034] refer to Figure 1-4 A bracket 11 is fixedly arranged between the two support plates 1 at a position away from the screening drum 4, a motor seat 12 is symmetrically fixedly arranged on the surface of the bracket 11, a motor 13 is fixedly arranged inside the motor seat 12, and a gear 2 32 is fixedly arranged on the surface of the output shaft of the motor 13.

[0035] refer to Figure 1-4A gear three 41 is fixedly provided on one end surface of the screening drum two 4, and a gear two 32 is fixedly provided on the other end surface of the screening drum one 3. The gear one 14 on the output shaft surface of the two motors one 13 is respectively meshed with the gear two 32 and the gear three 41, and the screening drum one 3 and the screening drum two 4 are respectively driven to rotate by the motors one 13 on both sides.

[0036] refer to Figure 5-6 A support plate 2 is fixedly arranged on the outer side of the support plate 1, and a groove 215 is opened on the inner side of the support plate 2. The groove 215 is for preventing the support plate 2 from contacting with the screening drum 2 4.

[0037] refer to Figure 5-7 A circular feeding cylinder 21 is fixedly arranged between the two supporting plates 2, the circular feeding cylinder 21 passes through the screening cylinder 4, and a feeding frame 216 with an upward opening is fixedly arranged on one end surface of the feeding cylinder 21, and a discharge port 214 is opened on the lower surface of the feeding cylinder 21 located inside the screening cylinder 4.

[0038] refer to Figure 5-7 A spiral feeding piece 213 is rotatably arranged in the feeding barrel 21, and a motor 211 is fixedly arranged on the outer side surface of the feeding barrel 21. The output shaft of the motor 211 is fixed to one end of the spiral feeding piece 213. The spiral feeding piece 213 is driven by the motor 211 to make the plastic particles entering the feeding barrel 21 through the feeding frame 216 be introduced into the screening barrel 24 through the discharge port 214.

[0039] refer to Figure 5-12 A scraper 23 is symmetrically fixedly arranged on the surface of the feeding cylinder 21 near the discharge port 214, a groove 231 is opened at the outer end of the scraper 23, and a part of the lower end surface of the scraper 23 contacts the inner wall of the screening cylinder 24, and the scrapers 23 on both sides can limit the plastic particles within a certain range.

[0040] refer to Fig.12 A cleaning rod 217 is rotatably disposed in the second groove 231, and a brush is disposed on the surface of the cleaning rod 217. The brush is used to clean the second screening hole 42 to prevent the plastic particles from clogging the second screening hole 42 during the screening process.

[0041] refer to Figure 5-12 A U-shaped scraper 22 is fixedly provided on the lower surface of the feeding cylinder 21 near the discharge port 214. The U-shaped scraper 22 is located between the two scrapers 23, and the lower end of the U-shaped scraper 22 is in contact with the inner wall of the screening cylinder 24. When the screening cylinder 24 rotates, the U-shaped scraper 22 can better break up the accumulated plastic particles and further improve the screening effect.

[0042] refer to Figure 7A motor 4 218 is fixedly arranged on the outer side of the support plate 22, and the output shaft of the motor 4 218 is fixed to one end of the cleaning rod 217, and the motors 4 218 on both sides drive the cleaning rods 217 on both sides to rotate in opposite directions. When the cleaning rods 217 on both sides rotate, the plastic particles can be pushed and swept between the two scrapers 23, further preventing the plastic particles from escaping from the range between the two scrapers 23, so that they can be better screened.

[0043] refer to Figure 1 A material distribution frame 5 is fixedly arranged between the two support plates 1 at a lower position away from the screening cylinder 3. The material distribution frame 5 has three outlets. The top outlet is used to receive the screened plastic particles, and the outlets on the two sides below are used to export plastic particles with larger or smaller volumes on one side and plastic particles with a standard volume on the other side.

[0044] refer to Figure 8-9 A baffle 52 is rotatably arranged in the material distribution frame 5, and the baffle 52 can block the outlets on both sides below. A motor 51 is fixedly arranged on the outer side of the support plate 1, and the output shaft of the motor 51 passes through the support plate 1 and the material distribution frame 5 and is fixed to the baffle 52. The baffle 52 can be driven by the motor 51 to rotate, so that it can block any one of the outlets on both sides.

[0045] Furthermore, before screening, the gear 14 is driven to rotate by the motor 13 to rotate the sieve hole 31 with small holes on the surface of the sieve drum 3 to rotate downward to correspond to the discharge port 214 of the feed drum 21, and then the plastic particles are introduced into the feed drum 21 through the feed frame 216, and the spiral feeder 213 is driven by the motor 211 to make the plastic particles enter the sieve drum 24, and then the gear 14 is driven to rotate by the motor 13 to rotate the sieve drum 24. At this time, the motor 13 on the other side stops moving, and the sieve drum 3 stops rotating. With the rotation of the sieve drum 24 and the rotation of the cleaning rod 217 at the lower end of the scraper 23, the smaller plastic particles can pass through the sieve drum 24 and fall into the distribution frame 5. At this time, the baffle 52 in the distribution frame 5 has blocked the outlet on one side, and the unobstructed outlet can lead out the plastic particles, which are then collected by an external collecting device.

[0046] After the smaller plastic particles are screened, the motor 13 drives the gear 14 to rotate, so that the screening hole 31 with a medium hole on the surface of the screening cylinder 3 rotates downward and corresponds to the discharge port 214 of the feeding cylinder 21, and then repeats the above process to screen out the plastic particles of qualified size. At this time, the baffle 52 in the dividing frame 5 is located on the other side, and the unobstructed outlet can lead out the plastic particles of qualified volume, which are then collected by an external collecting device.

[0047] Finally, the larger plastic particles are screened and collected together with the smaller plastic particles for further smelting.

[0048] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0049] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0050] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. A plastic particle screening device, characterized in that: The invention comprises two symmetrically arranged support plates (1), a screen drum (4) is rotatably arranged between the two support plates (1), and a screen drum (3) is rotatably arranged on the surface of the screen drum (4). The surface of the screening cylinder 2 (4) is provided with a plurality of neatly arranged screening holes 2 (42) in an annular shape. The surface of the screening cylinder 1 (3) is annularly provided with three groups of screening holes 1 (31), the three groups of screening holes 1 (31) are divided into small holes, medium holes and large holes, the diameter of the screening holes 2 (42) is the same as that of the large holes of the screening holes 1 (31), A material distribution frame (5) is fixedly arranged between the two support plates (1) at a position below and away from the screening drum (3). The material distribution frame (5) has three outlets. A baffle (52) is rotatably arranged inside the material distribution frame (5). A motor (51) is fixedly arranged on the outer side surface of the support plate (1). The output shaft of the motor (51) passes through the support plate (1) and the material distribution frame (5) and is fixed to the baffle (52). A support plate (2) is fixedly arranged on the outer side surface of the support plate (1). The two support plates (2) 2) is fixedly provided with a circular feeding cylinder (21), the circular feeding cylinder (21) penetrates the screening cylinder (4), and a feeding frame (216) with an upward opening is fixedly provided on one end surface of the feeding cylinder (21), a feeding opening (214) is provided on the lower surface of the feeding cylinder (21) located inside the screening cylinder (4), a spiral feeding member (213) is rotatably provided inside the feeding cylinder (21), and a scraper (23) is symmetrically fixedly provided on the surface of the feeding cylinder (21) near the feeding opening (214) The outer end of the scraper plate 2 (23) is provided with a groove 2 (231), and a part of the lower end surface of the scraper plate 2 (23) contacts the inner wall of the screening drum 2 (4). A cleaning rod (217) is rotatably arranged in the groove 2 (231), and a brush is arranged on the surface of the cleaning rod (217). The cleaning rod (217) is arranged on both sides below the feeding drum (21). A motor 4 (218) is fixedly arranged on the outer side surface of the support plate 2 (2), and the output shaft of the motor 4 (218) is connected to one side of the cleaning rod (217). The ends are fixed, and the motors (218) on both sides drive the cleaning rods (217) on both sides to rotate in opposite directions. When the cleaning rods (217) on both sides rotate, they push and sweep the plastic particles between the two scrapers (23). A U-shaped scraper (22) is fixedly provided on the lower surface of the feeding cylinder (21) near the discharge port (214). The U-shaped scraper (22) is located between the two scrapers (23), and the lower end of the U-shaped scraper (22) contacts the inner wall of the screening cylinder (4).

2. A plastic particle screening device according to claim 1, characterized in that: A bracket (11) is fixedly arranged between the two support plates (1) at a position away from the screening drum (4), a motor seat (12) is symmetrically fixedly arranged on the surface of the bracket (11), a motor (13) is fixedly arranged inside the motor seat (12), and a gear (32) is fixedly arranged on the surface of the output shaft of the motor (13).

3. A plastic particle screening device according to claim 2, characterized in that: A gear three (41) is fixedly provided on one end surface of the screening drum two (4), a gear two (32) is fixedly provided on the other end surface of the screening drum one (3), and a gear one (14) on the output shaft surface of the two motors one (13) is meshed with the gear two (32) and the gear three (41) respectively.

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