Plastic recovery particle screening device

Abstract

The utility model discloses a plastic recovery particle screening device, which relates to the field of plastic screening, and comprises a shell, the inner side of the shell is fixedly connected with a feed hopper, the inner side of the shell is provided with an upper screening plate and a lower screening plate, and a connecting block is fixedly connected between the upper screening plate and the lower screening plate. Screening nets are arranged on the inner side of the upper screening plate and the inner side of the lower screening plate correspondingly, and the problems that when a cam makes contact with a guide flat plate through rotation, the cam collides with the guide flat plate, large abrasion is generated between the cam and the guide flat plate due to long-time use, large noise is generated due to collision, and meanwhile when abrasion is large, screening is not needed are solved. In order to solve the problem that normal use between the cam and the guide flat plate is possibly affected due to the fact that the cam is arranged on the guide flat plate, a reciprocating mechanism driven by a servo motor is adopted in the device, abrasion and noise are reduced through a rotating disc, a rotating block, a connecting ring block, a connecting plate and a moving block, and the service life of the device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of plastic screening technology, and more specifically, to a plastic recycling particle screening device. Background Technology

[0002] Plastic pellet screening refers to the process of separating plastic pellets according to their size. The purpose of this process is to remove excessively large or small particles and impurities, thereby improving the quality and utilization rate of the plastic pellets. Screening typically uses perforated screens to separate mixtures of different particle sizes into various particle size grades. In plastic pellet screening, particles that pass through the screen openings are called undersize products, while particles that remain on the screen are called oversize products.

[0003] Utility model CN214266267U discloses a plastic recycling granule screening device, including a vibration adjustment device 1, a vibration adjustment device 2, a screening plate, a guiding and stabilizing device, a conveyor belt, a feed inlet, a large particle discharge outlet, a small particle discharge outlet, a receiving shell, and an outer frame of the device. This utility model belongs to the technical field of plastic screening equipment, specifically a plastic recycling granule screening device. It improves the working efficiency of plastic recycling granule screening devices, reduces the manufacturing cost by using only one vibration drive motor, reduces the power consumption by using a conveyor belt, reduces the operating cost by including vibration adjustment device 1, vibration adjustment device 2, and a screening plate, reduces noise generated during operation, improves the user experience, and lowers maintenance costs.

[0004] Regarding the above solution, the applicant believes that the solution mainly uses the continuous rotation of cam one and cam two to achieve the up-and-down movement of contact guide plate one and contact guide plate two, and uses the up-and-down movement of the two contact guide plates to achieve the vibration of the small-hole screen plate and the large-hole screen plate, so that the two screen plates can achieve the screening of plastic particles. However, when the cam comes into contact with the guide plate through rotation, it will collide with the guide plate. Long-term use will not only cause significant wear between the cam and the guide plate, but also generate significant noise due to the impact. At the same time, when the wear is significant, it may affect the normal use of the cam and the guide plate, thus resulting in a shorter lifespan of the cam and the guide plate during use. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a plastic recycling particle screening device, which can effectively solve the problem that when the cam rotates and comes into contact with the guide plate, it will collide with the guide plate. Long-term use will not only cause large wear between the cam and the guide plate, but also generate a lot of noise due to the impact. At the same time, when the wear is large, it may affect the normal use of the cam and the guide plate.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A plastic recycling pellet screening device includes a housing, a feed hopper fixedly connected to the inner side of the housing, an upper screening plate and a lower screening plate arranged on the inner side of the housing, a connecting block fixedly connected between the upper screening plate and the lower screening plate, screening screens arranged on the inner side of both the upper screening plate and the lower screening plate, a collection box arranged on the inner side of the housing, and the collection box is located below the lower screening plate. A reciprocating mechanism is arranged on the outer side of the upper screening plate.

[0008] In a preferred embodiment of this utility model, the reciprocating mechanism includes a servo motor fixedly connected to one side of the housing. The output end of the servo motor passes through the housing. The output end of the servo motor is fixedly connected to a rotating disk via a coupling. A rotating block is provided on one side of the rotating disk. A first connecting ring block is rotatably connected to one side of the rotating block. A connecting plate is rotatably connected to the outer side of the first connecting ring block. A second connecting ring block is rotatably connected to the inner side of the connecting plate. A moving block is rotatably connected to the end of the second connecting ring block away from the upper screening plate. A fixed block is fixedly connected to the upper side of the moving block. One end of the fixed block is fixedly connected to the upper screening plate. A limit component is provided on the outer side of the moving block. An adjustment component is provided on one side of the rotating disk.

[0009] As a preferred embodiment of the present invention, the limiting component includes a fixed plate fixedly connected to the inner side of the housing, a limiting plate fixedly connected to one side of the fixed plate, a limiting groove formed on one side of the moving block, the limiting plate being disposed inside the limiting groove, and the moving block being slidably connected to the outer side of the limiting plate.

[0010] In a preferred embodiment of this utility model, the adjustment component includes a mounting block fixedly connected to one side of the rotating disk, a screw rotatably connected to the inner side of the mounting block, and a rotating block threadedly connected to the outer side of the screw.

[0011] As a preferred embodiment of this utility model, a reinforcing block is fixedly connected to the outside of the fixing block, and one side of the reinforcing block is fixedly connected to the upper screening plate.

[0012] As a preferred embodiment of this utility model, the upper and lower sides of the movable block are respectively movably bonded with a first rubber layer and a second rubber layer, and one side of the upper screening plate and the connecting block are provided with an opening and closing door panel.

[0013] As a preferred embodiment of the present invention, a limiting ring block is fixedly connected to one end of both the first connecting ring block and the second connecting ring block. The limiting ring block is located on the side of the connecting plate away from the rotating disk, and the diameters of the two limiting ring blocks are respectively larger than the diameters of the first connecting ring block and the second connecting ring block.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] 1. This device uses a servo motor-driven reciprocating mechanism. Through a rotating disk, rotating block, connecting ring block, connecting plate, and moving block, wear and noise are reduced, and the service life of the equipment is extended. Furthermore, the adjustment components in the reciprocating mechanism allow the position of the rotating block to be adjusted, thereby changing the amplitude of the moving block's up and down movement. This adjustable amplitude allows the device to adapt to different particle sizes and screening requirements, improving the flexibility and applicability of the equipment.

[0016] 2. When the screw in this device rotates, the position of the rotating block can be adjusted through the threaded connection between the rotating block and the screw. When the position of the rotating block changes, the distance between the rotating block and the center point of the rotating disk will change, thereby adjusting the amplitude of the upper and lower screening plates. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the shell in an embodiment of the present utility model;

[0019] Figure 3 This is a side sectional view of the shell in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the upper screening plate and screening screen in an embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the limiting ring block and the fixing block in the embodiment of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the second connecting ring block and the first connecting ring block in an embodiment of this utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the adjustment component and the first rubber layer in an embodiment of the present invention.

[0024] Explanation of the labels in the diagram:

[0025] 1. Shell; 2. Feed hopper; 31. Upper screening plate; 32. Connecting block; 33. Lower screening plate; 34. Screening mesh; 35. Collection box; 4. Reciprocating mechanism; 41. Servo motor; 42. Rotary disk; 43. Rotating block; 44. First connecting ring block; 45. Connecting plate; 46. Second connecting ring block; 47. Moving block; 48. Fixed block; 49. Limiting component; 491. Fixed plate; 492. Limiting plate; 493. Limiting groove; 5. Limiting ring block; 6. Adjusting component; 61. Mounting block; 62. Screw; 71. First rubber layer; 72. Second rubber layer; 8. Reinforcing block; 9. Opening and closing door panel. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Example:

[0028] Please see Figure 1-7 A plastic recycling pellet screening device includes a housing 1, a feed hopper 2 fixedly connected to the inner side of the housing 1, an upper screening plate 31 and a lower screening plate 33 arranged on the inner side of the housing 1, a connecting block 32 fixedly connected between the upper screening plate 31 and the lower screening plate 33, and a screening screen 34 arranged on the inner side of both the upper screening plate 31 and the lower screening plate 33. The upper screening plate 31 and the lower screening plate 33 can screen plastic pellets through the screening screen 34 arranged on their own inner sides. The aperture of 4 is larger than that of the sieve screen 34 on the inner side of the lower sieve plate 33, which allows the lower sieve screen 34 to further screen the particles, thereby improving the screening effect. The connecting block 32 is used to connect the upper sieve plate 31 and the lower sieve plate 33. A collection box 35 is provided on the inner side of the housing 1, and the collection box 35 is located on the lower side of the lower sieve plate 33. A reciprocating mechanism 4 is provided on the outer side of the upper sieve plate 31. The collection box 35 is used to collect the particles screened by the lower sieve screen 34.

[0029] Specifically, the reciprocating mechanism 4 includes a servo motor 41 fixedly connected to one side of the housing 1. The output end of the servo motor 41 passes through the housing 1. The output end of the servo motor 41 is fixedly connected to a rotating disk 42 via a coupling. A rotating block 43 is provided on one side of the rotating disk 42. A first connecting ring block 44 is rotatably connected to one side of the rotating block 43. The servo motor 41 can drive the rotating disk 42 to rotate through its own operation. The rotating block 43 can connect to the first connecting ring block 44. A connecting plate 45 is rotatably connected to the outer side of the first connecting ring block 44. A second connecting ring block 46 is rotatably connected to the inner side of the connecting plate 45. A moving block 47 is rotatably connected to the end of the second connecting ring block 46 away from the upper screening plate 31. A fixed block 48 is fixedly connected to the upper side of the moving block 47. One end of the fixed block 48 is fixedly connected to the upper screening plate 31.

[0030] In addition, a limiting component 49 is provided on the outer side of the moving block 47. The first connecting ring block 44 can be connected to the second connecting ring block 46 through the connecting plate 45, while the limiting component 49 can limit the moving block 47. At the same time, when the rotating disk 42 rotates, it can drive the rotating block 43 to rotate around the center of the rotating disk 42. This allows the rotating block 47 to move up and down reciprocally through the eccentric movement of the rotating block 43 when the rotating disk 42 rotates. The moving block 47 can drive the upper screening plate 31 and the lower screening plate 33 to move up and down together through the fixed block 48, thereby realizing the screening of plastic particles. An adjustment component 6 is provided on one side of the rotating disk 42. The adjustment component 6 can adjust the position of the rotating block 43, so that the moving block 47 can be adjusted in amplitude when moving up and down by the movement of the rotating block 43, thereby realizing the adjustment of different amplitudes.

[0031] Specifically, the limiting component 49 includes a fixed plate 491 fixedly connected to the inner side of the housing 1. A limiting plate 492 is fixedly connected to one side of the fixed plate 491. A limiting groove 493 is opened on one side of the moving block 47. The limiting plate 492 is disposed inside the limiting groove 493. The moving block 47 is slidably connected to the outer side of the limiting plate 492. The fixed plate 491 can play the role of installing and fixing the limiting plate 492, while the limiting plate 492 can limit the moving block 47 through the limiting groove 493, so that it can move up and down smoothly and is not prone to shaking with the connecting plate 45.

[0032] Specifically, the adjustment component 6 includes a mounting block 61 fixedly connected to one side of the rotating disk 42. A screw 62 is rotatably connected to the inner side of the mounting block 61, and a rotating block 43 is threadedly connected to the outer side of the screw 62. The mounting block 61 can connect to the screw 62. When the screw 62 rotates, the position of the rotating block 43 can be adjusted through the threaded connection between the rotating block 43 and the screw 62. When the position of the rotating block 43 changes, the distance between the rotating block 43 and the center point of the rotating disk 42 will change, which will also change the distance that the connecting plate 45 can move, thereby realizing the adjustment of the amplitude of the upper screening plate 31 and the lower screening plate 33.

[0033] Specifically, a reinforcing block 8 is fixedly connected to the outside of the fixing block 48. One side of the reinforcing block 8 is fixedly connected to the upper screening plate 31. The reinforcing block 8 can increase the stability of the connection between the fixing block 48 and the upper screening plate 31, making the connection between the upper screening plate 31 and the fixing block 48 less prone to breakage.

[0034] Specifically, the upper and lower sides of the movable block 47 are respectively movably bonded with a first rubber layer 71 and a second rubber layer 72. The upper screening plate 31 and the connecting block 32 are both provided with an opening and closing door plate 9. The first rubber layer 71 and the second rubber layer 72 make it less likely for the movable block 47 to collide with the limiting component 49 when it moves up and down, thus preventing damage to the limiting component 49 or the movable block 47. The opening and closing door plate 9 makes it convenient for workers to remove the screened plastic particles.

[0035] Specifically, a limiting ring block 5 is fixedly connected to one end of the first connecting ring block 44 and the second connecting ring block 46. The limiting ring block 5 is located on the side of the connecting plate 45 away from the rotating disk 42, and the diameters of the two limiting ring blocks 5 are larger than the diameters of the first connecting ring block 44 and the second connecting ring block 46, respectively. The setting of the limiting ring block 5 makes it less likely for the connecting plate 45 to fall off when it rotates or slides on the outside of the first connecting ring block 44 and the second connecting ring block 46.

[0036] The working principle and usage process of this utility model are as follows: When using this device, the operator can add the plastic granules to be screened to the inside of the shell 1 through the feed hopper 2. After adding, the operator can start the servo motor 41. The output end of the servo motor 41 drives the rotating disk 42 to rotate through the coupling. Due to its eccentric setting, the rotating block 43 on the rotating disk 42 moves eccentrically with the rotation of the rotating disk 42. When the rotating block 43 moves eccentrically, it will drive the connecting plate 45 to rotate and move through the first connecting ring block 44. At the same time, through the connection between the connecting plate 45 and the second connecting ring block 46, and the limit group... The limiting position of component 49 on the moving block 47 causes the moving block 47 to move vertically up and down. When the moving block 47 moves up and down, it will drive the upper screening plate 31 and the lower screening plate 33 to move together through the fixed block 48. At this time, the plastic particles will be screened by the two screening screens 34 due to the up and down vibration of the upper screening plate 31 and the lower screening plate 33. Larger particles are left on the upper screening plate 31, and smaller particles fall onto the lower screening plate 33 through the screening screen 34 on the inner side of the upper screening plate 31, and are further screened by the screening screen 34 on the inner side of the lower screening plate 33. The particles screened by the lower screening plate 33 will fall into the inner side of the collection box 35.

[0037] When it is necessary to adjust the amplitude of the upper screening plate 31 and the lower screening plate 33, the screw 62 can be rotated. Since the rotating block 43 and the screw 62 are connected by a thread, the rotation of the screw 62 will drive the rotating block 43 to move closer to or further away from the center of the rotating disk 42. The movement of the rotating block 43 will change the amplitude of the eccentric motion, thereby achieving the adjustment of the amplitude of the upper screening plate 31 and the lower screening plate 33.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A plastic recycling pellet screening device, comprising a housing (1), characterized in that: A feed hopper (2) is fixedly connected to the inner side of the housing (1). An upper screening plate (31) and a lower screening plate (33) are provided on the inner side of the housing (1). A connecting block (32) is fixedly connected between the upper screening plate (31) and the lower screening plate (33). Screening screens (34) are provided on the inner sides of both the upper screening plate (31) and the lower screening plate (33). A collection box (35) is provided on the inner side of the housing (1), and the collection box (35) is located on the lower side of the lower screening plate (33). A reciprocating mechanism (4) is provided on the outer side of the upper screening plate (31).

2. The plastic recycling granule screening device according to claim 1, characterized in that: The reciprocating mechanism (4) includes a servo motor (41) fixedly connected to one side of the housing (1). The output end of the servo motor (41) passes through the housing (1). The output end of the servo motor (41) is fixedly connected to a rotating disk (42) via a coupling. A rotating block (43) is provided on one side of the rotating disk (42). A first connecting ring block (44) is rotatably connected to one side of the rotating block (43). A connecting plate (45) is rotatably connected to the outer side of the first connecting ring block (44). A second connecting ring block (46) is rotatably connected to the inner side of the connecting plate (45). A moving block (47) is rotatably connected to one end of the second connecting ring block (46) away from the upper screening plate (31). A fixed block (48) is fixedly connected to the upper side of the moving block (47). One end of the fixed block (48) is fixedly connected to the upper screening plate (31). A limit component (49) is provided on the outer side of the moving block (47). An adjustment component (6) is provided on one side of the rotating disk (42).

3. The plastic recycling granule screening device according to claim 2, characterized in that: The limiting component (49) includes a fixed plate (491) fixedly connected to the inside of the housing (1), a limiting plate (492) fixedly connected to one side of the fixed plate (491), a limiting groove (493) opened on one side of the moving block (47), the limiting plate (492) is disposed inside the limiting groove (493), and the moving block (47) is slidably connected to the outside of the limiting plate (492).

4. The plastic recycling granule screening device according to claim 2, characterized in that: The adjustment assembly (6) includes a mounting block (61) fixedly connected to one side of the rotating disk (42), a screw (62) rotatably connected to the inner side of the mounting block (61), and a rotating block (43) threadedly connected to the outer side of the screw (62).

5. The plastic recycling granule screening device according to claim 3, characterized in that: A reinforcing block (8) is fixedly connected to the outside of the fixing block (48), and one side of the reinforcing block (8) is fixedly connected to the upper screening plate (31).

6. The plastic recycling granule screening device according to claim 2, characterized in that: The upper and lower sides of the movable block (47) are respectively movably bonded with a first rubber layer (71) and a second rubber layer (72), and an opening and closing door panel (9) is provided on one side of the upper screening plate (31) and the connecting block (32).

7. A plastic recycling granule screening device according to claim 3, characterized in that: One end of the first connecting ring block (44) and the second connecting ring block (46) is fixedly connected to a limiting ring block (5). The limiting ring block (5) is located on the side of the connecting plate (45) away from the rotating disk (42), and the diameters of the two limiting ring blocks (5) are respectively larger than the diameters of the first connecting ring block (44) and the second connecting ring block (46).

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