Particle size screening machine for PVC particle processing

Abstract

The utility model discloses a particle size screening machine for PVC particle processing, and relates to the field of PVC particle processing, the particle size screening machine comprises a screening box and a feed port arranged at one side of the top end of the screening box, a discharge port is arranged at the middle position of the bottom end of the screening box, and a driving motor is fixedly connected at the middle position of the top end of the screening box. And the output end of the driving motor extends into the screening box and is fixedly connected with a rotating rod, and the two sides of the exterior of the rotating rod are fixedly connected with a plurality of shifting rods. According to the particle size screening machine for PVC particle processing, the output end of a driving motor rotates and drives a rotating rod to rotate, so that the rotating rod can drive a shifting rod to shift particles, the particles continuously move in a screening box, and then the particles are screened through a screening plate; and vibration is generated through contact striking between the top end of the screening plate and a limiting plate above a limiting rod, so that particles blocked in screening holes are vibrated out, and the overall working efficiency during screening is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC particle processing, in particular to a particle size screening machine for PVC particle processing. Background Art

[0002] Polyvinyl chloride, abbreviated as PVC in English, is the third largest synthetic polymer plastic in the world. When processing PVC particles, it is necessary to screen the PVC particles according to different needs, so that unqualified particles or particles that do not meet the needs can be screened out, so that the particle size error for subsequent processing is small, reducing the difficulty of subsequent processing.

[0003] In the prior art, a Chinese patent with authorization announcement number CN210791644U discloses a screening device for plastic particle processing, which relates to the field of plastic particle screening technology. The screening device for plastic particle processing includes a barrel, a sealing door, a feed hopper, a screening mechanism, an ultraviolet lamp, a drying mechanism and a drain pipe. The left end of the front of the sealing door and the left end of the front of the barrel are both hinged by a pin shaft, the right end of the feed hopper is connected to the top of the left side of the barrel, and the top of the screening mechanism is installed at the center of the top surface of the barrel. The screening device for plastic particle processing, through the coordinated use of the screening mechanism and the drying mechanism, can firstly increase the screening rate of the entire device by rotating the ventilation pipe, thereby increasing the working efficiency of the entire device, and then can also quickly dry the plastic particles after cleaning, thereby improving the quality of the plastic that can be screened, and at the same time, further improving the practicality of the entire device.

[0004] The above-mentioned mechanism shakes the screen by utilizing the cooperation between the vibrating rod and the trigger block. However, in actual use, the motor itself drives the air duct to rotate and move the material. At the same time, the continuous vibration of the vibrating rod will cause vibration transmission, which will cause the air duct to loosen after long-term use. The loose air duct will affect the overall screening efficiency. Utility Model Content

[0005] The utility model aims to provide a particle size screening machine for PVC particle processing to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a particle size screening machine for PVC particle processing, comprising a screening box and a feed port opened on one side of the top of the screening box, a discharge port opened at the middle position of the bottom of the screening box, a driving motor fixedly connected to the middle position of the top of the screening box, and an output end of the driving motor extends to the inside of the screening box and is fixedly connected to a rotating rod, a plurality of levers are fixedly connected to both sides of the outside of the rotating rod, and a plurality of fixed rods are arranged at both ends of the inside of the screening box;

[0007] A mounting frame is provided inside the screening box below the rotating rod, and a screening plate is connected to the top of the mounting frame through a limit rod. A shaking screening mechanism is provided on the screening plate, and the shaking screening mechanism can make the screening plate shake up and down continuously during the screening process, thereby ensuring the screening effect and avoiding the clogging of the screening plate itself;

[0008] A belt is sleeved on the outside of the output end of the driving motor above the screening box, and a fixed shaft is provided on the side of the top of the screening box close to the driving motor, the other side of the belt is sleeved on the outside of the fixed shaft, and an anti-blocking mechanism is provided on the top of the fixed shaft. The anti-blocking mechanism is used to prevent the feed port from being blocked during the feeding process, thereby ensuring the working efficiency during feeding.

[0009] Furthermore, the shaking screening mechanism includes an extrusion block, and the extrusion block is fixedly connected to both sides of the top of the screening plate, the cross-section of the extrusion block is triangular, and a buffer spring is wound around the outer side of the limit rod.

[0010] Furthermore, the top end of the buffer spring is connected to the bottom end of the screening plate, and the bottom end of the buffer spring is connected to the top end of the mounting bracket.

[0011] Furthermore, the anti-blocking mechanism includes a cam, and the cam is fixedly connected to the top end of the fixed shaft, a push rod is provided on one side of the cam, and one side of the push rod passes through and extends to the inside of the feed port.

[0012] Furthermore, a push plate is fixedly connected to one side of the push rod, and a toggle rod is fixedly connected to one side of the push plate, and a return spring is wound around the outer side of the push rod on the feed port side.

[0013] Furthermore, a pipe splicing mechanism is provided at the lower ends of both sides of the outside of the discharge port, and the pipe splicing mechanism is used to connect the discharge port with different pipes to facilitate transportation of particles after screening. The pipe splicing mechanism includes an installation box, and the installation box is fixedly connected to the lower ends of both sides of the outside of the discharge port, both ends of the installation box are fixedly connected with installation blocks, and one end between the installation blocks is rotatably connected with a hinged plate, the upper end of one side of the hinged plate is fixedly connected with a connecting spring, and the connecting spring is connected to the inner side of the installation box, the lower end of the other side of the hinged plate is fixedly connected with a card block, and a connecting pipe is sleeved on the outer side of the discharge port, and the upper ends of both sides of the connecting pipe are provided with card grooves matching the card block.

[0014] Furthermore, one side of the block passes through the side wall of the connecting pipe, and the inner diameter of the connecting pipe is larger than the inner diameter of the discharge port.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The output end of the driving motor rotates and drives the rotating rod to rotate, so that the rotating rod can drive the lever to move the particles, so that the particles are constantly moved inside the screening box, and the particles are screened by the screening plate. During the screening process, some particles will block the screening holes on the surface of the screening plate. The lever contacts the extrusion block on the surface of the screening plate during the rotation process, so that the extrusion block is squeezed, and the screening plate is pushed and moved downward. When the lever passes through the top of the extrusion block, the screening plate is restored to its initial position by the elastic force of the buffer spring, and the contact between the top of the screening plate and the limit plate above the limit rod is used to generate vibration, so that the particles blocked in the screening holes are shaken out, ensuring the overall work efficiency during screening;

[0017] Furthermore, the elastic force of the buffer spring can make the screening plate shake continuously during use, so that the screening plate is not at a fixed height during the screening process, thereby better realizing shaking screening, avoiding particles from blocking the screening holes and making the overall screening more flexible;

[0018] Furthermore, during the process of adding materials, the rotation of the cam will continuously squeeze and hit the position of the push rod, causing the position of the push rod to move left and right, while the other side of the push rod extends to the inside of the feed port and changes the position of the push plate and the toggle rod, thereby toggling the blocked granular material, thereby avoiding the problem of the feed port being blocked when too many particles are added, which affects the material adding efficiency. The elastic force of the return spring can quickly restore the push rod to its initial position after being squeezed and pushed, thereby cyclically performing the anti-blocking operation at the feed port, so that the overall material can be more stable during addition to prevent blockage;

[0019] 2. When screening particles, by splicing different pipes with the discharge port, particles can be quickly transported according to different needs, so as to ensure that in the process of particle processing and screening, the entire processing process can be more perfectly realized. The connecting pipe is moved upward and sleeved on the outside of the discharge port. At the same time, the connecting pipe is clamped on the inner side of the installation box, and the hinge plate is squeezed to one side so that the angle of the hinge plate changes from inclined to vertical. At the same time, the clamping block is clamped with the clamping slot to achieve fixed installation of the connecting pipe. When disassembly is required, the angle of the hinge plate is adjusted so that the lower end thereof is tilted in the direction away from the discharge port, so that the connecting pipe can be disassembled;

[0020] Furthermore, during the process of disassembling the connecting pipe, the connecting spring can assist the hinge plate in changing and resetting the angle, avoiding the need for manual adjustment of the hinge plate to achieve the initial angle reset after the angle is changed, thereby increasing the overall flexibility during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the front view and cross-section of the three-dimensional structure of the utility model;

[0023] Figure 3 It is a front view three-dimensional structural schematic diagram of the shaking screening mechanism of the utility model;

[0024] Figure 4 This is a front view three-dimensional structural diagram of the anti-blocking mechanism of the utility model;

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the propulsion rod of the utility model;

[0026] Figure 6 It is a schematic diagram of the exploded structure of the transport pipeline splicing mechanism of the utility model;

[0027] Figure 7 It is a formal cross-sectional structural schematic diagram of the transport pipeline splicing mechanism of the utility model.

[0028] In the figure: 1. screening box; 2. feed port; 3. discharge port; 4. driving motor; 5. rotating rod; 6. toggle rod; 7. mounting frame; 8. screening plate; 9. connecting pipe; 10. fixing rod; 11. extrusion block; 12. limit rod; 13. buffer spring; 14. belt; 15. fixing shaft; 16. cam; 17. push rod; 18. reset spring; 19. push plate; 20. toggle rod; 21. mounting box; 22. mounting block; 23. hinged plate; 24. connecting spring; 25. clamping block; 26. clamping slot. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Embodiment 1:

[0031] like Figure 1-Figure 3 The technical solution shown is to solve the problem that some particles will be blocked on the screening holes of the screening plate 8 during particle screening. When there are many blocked holes, the particle screening efficiency will be reduced: the particle size screening machine for PVC particle processing discloses a shaking screening mechanism, including a screening box 1 and a feed port 2 opened on one side of the top of the screening box 1, a discharge port 3 is opened at the middle position of the bottom end of the screening box 1, a driving motor 4 is fixedly connected to the middle position of the top end of the screening box 1, and the output end of the driving motor 4 extends to the inside of the screening box 1 and is fixedly connected to a rotating rod 5, and a plurality of levers 6 are fixedly connected to both sides of the outside of the rotating rod 5, and a plurality of fixed A mounting frame 7 is arranged inside the screening box 1 below the fixed rod 10 and the rotating rod 5, and a screening plate 8 is connected to the top of the mounting frame 7 through a limiting rod 12. A shaking screening mechanism is arranged on the screening plate 8. The shaking screening mechanism can make the screening plate 8 continuously shake up and down during the screening process, thereby ensuring the screening effect and avoiding the clogging of the screening plate 8 itself. The shaking screening mechanism includes an extrusion block 11, and the extrusion block 11 is fixedly connected to both sides of the top of the screening plate 8. The cross-section of the extrusion block 11 is triangular. A buffer spring 13 is wound around the outer side of the limiting rod 12. The top of the buffer spring 13 is connected to the bottom end of the screening plate 8, and the bottom end of the buffer spring 13 is connected to the top of the mounting frame 7.

[0032] In this example, PVC particles are added to the inside of the screening box 1 through the feed port 2. After the particles are added, the output end of the driving motor 4 rotates and drives the rotating rod 5 to rotate, so that the rotating rod 5 can drive the lever 6 to shift the particles, so that the particles are continuously moved inside the screening box 1, and the particles are screened by the screening plate 8. During the screening process, some particles will block the screening holes on the surface of the screening plate 8. The lever 6 contacts the extrusion block 11 on the surface of the screening plate 8 during the rotation process, so that the extrusion block 11 is squeezed, and the screening plate 8 is pushed and moves downward, and the buffer spring 13 is stressed and shortened. When the lever 6 passes through the top of the extrusion block 11, the screening plate 8 is restored to its initial position by the elastic force of the buffer spring 13, so that the screening plate 8 can repeatedly and significantly shake by the elastic force of the buffer spring 13, and the contact between the top of the screening plate 8 and the limit plate above the limit rod 12 is used to generate vibration, thereby shaking out the particles blocked in the screening holes, thereby ensuring the overall work efficiency during screening.

[0033] Embodiment 2:

[0034] like Figure 1 , Figure 2 , Figure 4 and Figure 5 The technical solution shown is to solve the problem that the feed port 2 is easily blocked by particles when a large amount of material is fed, resulting in slow feeding: the particle size screening machine for PVC particle processing discloses an anti-blocking mechanism, a belt 14 is sleeved on the outer side of the output end of the drive motor 4 above the screening box 1, and a fixed shaft 15 is provided on the side of the top of the screening box 1 close to the drive motor 4, the other side of the belt 14 is sleeved on the outer side of the fixed shaft 15, and an anti-blocking mechanism is provided on the top of the fixed shaft 15, the anti-blocking mechanism is used to prevent the feed port 2 from being blocked during the feeding process to ensure the working efficiency during feeding, the anti-blocking mechanism includes a cam 16, and the cam 16 is fixedly connected to the top of the fixed shaft 15, a push rod 17 is provided on one side of the cam 16, and one side of the push rod 17 passes through and extends to the inside of the feed port 2, one side of the push rod 17 is fixedly connected to a push plate 19, and one side of the push plate 19 is fixedly connected to a toggle rod 20, and a reset spring 18 is wound around the outer side of the push rod 17 on one side of the feed port 2.

[0035] In this example, during the process of adding materials, the rotation of the output end of the driving motor 4 will drive the belt 14 to rotate, so that the fixed shaft 15 is driven and the cam 16 is driven to rotate. The rotation of the cam 16 will continuously squeeze and hit the position of the push rod 17, so that the position of the push rod 17 moves left and right. At the same time, the other side of the push rod 17 extends to the inside of the feed port 2 and changes the position of the push plate 19 and the toggle rod 20, so as to toggle the blocked particulate material, so as to avoid the problem of the feed port 2 being blocked when too much particles are added, which affects the material adding efficiency.

[0036] Embodiment three:

[0037] like Figure 2 , Figure 6 and Figure 7 The technical solution shown in the figure is to solve the problem that it is inconvenient to splice the pipes when the pipes are used to transport the particles after the particle screening is completed: the particle size screening machine for PVC particle processing discloses a particle transportation pipe splicing mechanism, and the lower ends of the two sides of the discharge port 3 are provided with pipe splicing mechanisms, and the pipe splicing mechanisms are used to connect the discharge port 3 with different pipes to facilitate the transportation of the particles after screening. The pipe splicing mechanism includes an installation box 21, and the installation box 21 is fixedly connected to the lower ends of the two sides of the discharge port 3, and both ends of the installation box 21 are fixed. A mounting block 22 is fixedly connected, and one end of the mounting block 22 is rotatably connected to a hinged plate 23, an upper end of one side of the hinged plate 23 is fixedly connected to a connecting spring 24, and the connecting spring 24 is connected to the inner side of the mounting box 21, a clamping block 25 is fixedly connected to the lower end of the other side of the hinged plate 23, and a connecting pipe 9 is sleeved on the outer side of the discharge port 3, and a clamping groove 26 matching the clamping block 25 is provided at the upper ends of both sides of the connecting pipe 9, one side of the clamping block 25 passes through the side wall of the connecting pipe 9, and the inner diameter of the connecting pipe 9 is larger than the inner diameter of the discharge port 3.

[0038] In this example, when screening particles, by splicing different pipes with the discharge port 3, the particles can be quickly transported according to different needs, thereby ensuring that in the process of particle processing and screening, the entire processing process can be more perfectly realized. The connecting pipe 9 is moved upward and sleeved on the outside of the discharge port 3. At the same time, the connecting pipe 9 is engaged with the inner side of the installation box 21, and the hinge plate 23 is squeezed to one side, so that the angle of the hinge plate 23 is changed from inclined to vertical. At the same time, the block 25 is engaged with the slot 26, so as to realize the fixed installation of the connecting pipe 9. When disassembly is required, the angle of the hinge plate 23 is adjusted so that the lower end is tilted in the direction away from the discharge port 3, so that the connecting pipe 9 can be removed.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A particle size screening machine for PVC particle processing, comprising a screening box (1) and a feed port (2) opened at one side of the top of the screening box (1), a discharge port (3) opened at the middle position of the bottom of the screening box (1), a drive motor (4) fixedly connected at the middle position of the top of the screening box (1), and an output end of the drive motor (4) extending to the inside of the screening box (1) and fixedly connected to a rotating rod (5), a plurality of levers (6) are fixedly connected to both sides of the outside of the rotating rod (5), and a plurality of fixed rods (10) are arranged at both ends of the inside of the screening box (1); Features: A mounting frame (7) is provided inside the screening box (1) below the rotating rod (5), and a screening plate (8) is connected to the top of the mounting frame (7) by means of a limit rod (12), and a shaking screening mechanism is provided on the screening plate (8), and the shaking screening mechanism can make the screening plate (8) shake up and down continuously during the screening process, thereby ensuring the screening effect and avoiding the screening plate (8) from being blocked by itself; A belt (14) is sleeved on the outer side of the output end of the driving motor (4) above the screening box (1), and a fixed shaft (15) is provided on the top side of the screening box (1) close to the driving motor (4), the other side of the belt (14) is sleeved on the outer side of the fixed shaft (15), and an anti-blocking mechanism is provided on the top side of the fixed shaft (15), the anti-blocking mechanism is used to prevent the feed port (2) from being blocked during the feeding process, thereby ensuring the working efficiency during the feeding process.

2. A particle size screening machine for PVC particle processing according to claim 1, characterized in that: The shaking screening mechanism comprises an extrusion block (11), and the extrusion block (11) is fixedly connected to both sides of the top of the screening plate (8), the cross section of the extrusion block (11) is triangular, and a buffer spring (13) is wound around the outer side of the limiting rod (12).

3. A particle size screening machine for PVC particle processing according to claim 2, characterized in that: The top end of the buffer spring (13) is connected to the bottom end of the screening plate (8), and the bottom end of the buffer spring (13) is connected to the top end of the mounting frame (7).

4. The particle size screening machine for PVC particle processing according to claim 1, characterized in that: The anti-blocking mechanism comprises a cam (16), and the cam (16) is fixedly connected to the top end of the fixed shaft (15), and a propulsion rod (17) is provided on one side of the cam (16), and one side of the propulsion rod (17) passes through and extends to the inside of the feed port (2).

5. A particle size screening machine for PVC particle processing according to claim 4, characterized in that: One side of the propulsion rod (17) is fixedly connected to a propulsion plate (19), and one side of the propulsion plate (19) is fixedly connected to a toggle rod (20). A return spring (18) is wound around the outer side of the propulsion rod (17) on the side of the feed port (2).

6. The particle size screening machine for PVC particle processing according to claim 1, characterized in that: A pipe splicing mechanism is provided at the lower ends of both sides of the outside of the discharge port (3), and the pipe splicing mechanism is used to connect the discharge port (3) with different pipes to facilitate the transportation of particles after screening. The pipe splicing mechanism comprises a mounting box (21), and the mounting box (21) is fixedly connected to the lower ends of both sides of the outside of the discharge port (3), both ends of the mounting box (21) are fixedly connected to mounting blocks (22), and one end between the mounting blocks (22) is rotatably connected to a hinge plate (23), the upper end of one side of the hinge plate (23) is fixedly connected to a connecting spring (24), and the connecting spring (24) is connected to the inner side of the mounting box (21), the lower end of the other side of the hinge plate (23) is fixedly connected to a clamping block (25), and the outer side of the discharge port (3) is sleeved with a connecting pipe (9), and the upper ends of both sides of the connecting pipe (9) are provided with clamping grooves (26) matching the clamping block (25).

7. A particle size screening machine for PVC particle processing according to claim 6, characterized in that: One side of the block (25) passes through the side wall of the connecting pipe (9), and the inner diameter of the connecting pipe (9) is larger than the inner diameter of the discharge port (3).

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