Granulating and screening device for high polymer material and screening method of granulating and screening device

Abstract

The invention relates to the technical field of screening devices, and discloses a granulating and screening device for high polymer materials and a screening method thereof.The granulating and screening device comprises a screening box fixedly connected to the bottom end of a granulator; the flow dividing assembly comprises a flow dividing groove and a flow dividing piece, and the flow dividing piece is arranged in the screening box and used for dividing the particles; the primary screening assembly comprises a plurality of screening grooves and a plurality of screening pieces, the multiple screening grooves are fixedly connected to the flow dividing groove in the circumferential direction and communicate with the flow dividing pieces correspondingly, and the screening pieces are arranged in the screening grooves and used for conducting primary screening on the particles; and the secondary screening assembly comprises a plurality of screening cylinders, a plurality of screening pieces and a plurality of cleaning pieces, the screening cylinders are fixedly connected into the screening box in the circumferential direction and communicate with the screening pieces correspondingly, the screening pieces and the cleaning pieces are arranged in the screening cylinders correspondingly, the screening pieces are used for screening particles, and the cleaning pieces are used for cleaning the screening pieces. The device is simple in structure, particle material accumulation and mesh blockage are avoided, the screening efficiency is improved, and the screening effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of screening devices, in particular to a granulation screening device for polymer materials and a screening method thereof. Background Art

[0002] High polymer materials, also known as polymer materials, are materials composed of high molecular compounds as the matrix and other additives. High polymer materials are divided into natural high polymer materials and synthetic high polymer materials according to their sources. Natural high polymers are high molecular substances existing in animals, plants and organisms, while synthetic high polymer materials have properties that natural high polymer materials do not have or have superior properties, such as lower density, higher mechanical properties, wear resistance, corrosion resistance and electrical insulation, etc.

[0003] In the production of polymer materials, the raw materials of polymer materials and their additives, functional bodies, etc. need to be placed in a granulator, and the granulator can produce the raw materials into granules. This process is widely used in the fields of spinning, plastic modification, etc. In order to make the size of granular polymer materials more uniform, the granular polymer materials will be screened. The screening devices in the prior art mostly transport a large amount of particles to the screen for vibration screening. On the one hand, a large amount of granular materials are easily accumulated on the screen after transportation, affecting the overall screening efficiency. On the other hand, particles similar to the mesh size are easily blocked in the mesh, and simple vibration screening cannot vibrate them out, so that the screen is gradually blocked, affecting the subsequent screening efficiency and effect.

[0004] Therefore, there is an urgent need for a granulation and screening device for polymer materials and a screening method thereof to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a granulation and screening device for polymer materials and a screening method thereof to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a granulation and screening device for polymer materials, comprising:

[0007] The screening box is fixedly connected to the bottom of the granulator;

[0008] A flow diversion assembly, comprising a flow diversion trough and a flow diversion member, wherein the flow diversion trough is fixedly connected in the screening box and communicated with the bottom end of the granulator, and the flow diversion member is arranged in the screening box for diverting particles;

[0009] A primary screening assembly, comprising a plurality of screening slots and a plurality of screening elements, wherein the plurality of screening slots are fixedly connected to the diverter slot along the circumferential direction and are respectively connected to the diverter element, and the screening element is arranged in the screening slot for primary screening of particles;

[0010] The secondary screening component includes a plurality of screening cylinders, a plurality of screening elements and a plurality of cleaning elements. The plurality of screening cylinders are fixedly connected to the screening box along the circumferential direction and are respectively connected to the plurality of screening elements. The screening elements and the cleaning elements are respectively arranged in the screening cylinders. The screening elements are used for screening particles, and the cleaning elements are used for cleaning the screening elements.

[0011] Preferably, the diverter member includes a rotating shaft rotatably connected to the bottom end of the diverter groove, a diverter plate is fixedly connected to the rotating shaft, a plurality of diverter channels are circumferentially opened on the diverter plate, a plurality of diverter holes are circumferentially opened at the bottom end of the diverter groove, a plurality of the diverter channels correspond one to one with a plurality of the diverter holes, a first motor is fixedly connected to the bottom end of the diverter groove, and the bottom end of the rotating shaft extends out of the diverter groove and is fixedly connected to the output shaft of the first motor.

[0012] Preferably, the screening component includes a support frame fixedly connected to the screening trough, a plurality of sliders are slidably connected to the opposite side walls of the support frame, a screening rod is fixedly connected between two opposite sliders, the spacing between two adjacent screening rods is equal, connecting rods are hinged on both sides of the bottom end of the slider, the other ends of the two connecting rods between two adjacent sliders are hinged with fixed blocks, and a plurality of fixed blocks are slidably connected to the support plate, a cylinder is fixedly connected to the screening trough, the output end of the cylinder is fixedly connected to the support plate, one end of the screening trough is connected to the diversion hole, a collecting trough is fixedly connected to the bottom end of the screening trough, and the collecting trough is connected to the screening cylinder.

[0013] Preferably, the screening element includes a screening net rotatably connected to the screening cylinder, a gap is arranged between the outer side wall of the screening net and the inner side wall of the screening cylinder, and a first collecting port and a second collecting port are respectively provided at the bottom and the middle of one end of the screening cylinder away from the collecting groove, the first collecting port is communicated with the bottom of the gap, and the second collecting port is communicated with the screening net.

[0014] Preferably, the cleaning member comprises a support shaft rotatably connected in the screening cylinder, the support shaft is located at the top of the gap, a cleaning roller is fixedly connected to the support shaft, and the cleaning roller contacts the top of the outer side wall of the screening net.

[0015] Preferably, a second motor is fixedly connected to the outer wall of the screening cylinder, the output shaft of the second motor extends into the screening cylinder and is fixedly connected to the first gear through a transmission shaft, a gear ring is fixedly connected to the outer wall of one end of the screening net, a second gear is fixedly connected to the support shaft, and the gear ring and the second gear are respectively meshed with the first gear.

[0016] Preferably, one end of the screening trough away from the diversion hole is fixedly connected with a guide plate.

[0017] Preferably, the screening drum is arranged at an incline.

[0018] Preferably, a plurality of cleaning protrusions are fixedly connected to the cleaning roller.

[0019] A granulation and screening method for polymer materials comprises the following steps:

[0020] After granulation by the granulator, the pellets are transported to the diversion trough for diversion through the diversion parts;

[0021] The diverted particles are primarily screened by the screening element, and the particles after the primary screening are transported to the screening cylinder;

[0022] The particles in the screening cylinder are subjected to secondary screening by the screening element to screen out the desired particles, and the screening element is cleaned by the cleaning element during the screening process.

[0023] Compared with the prior art, the present invention has the following advantages and technical effects:

[0024] The present invention provides a granulation screening device for polymer materials and a screening method thereof. The diverter trough is connected to the granulator. The manufactured particles fall into the diverter trough and are transported to the screening trough through the diverter element. The screening element performs primary screening. The screened particles are transported to the screening cylinder and screened again through the screening element to ensure the overall screening effect. At the same time, the diverter, primary screening and secondary screening avoid the accumulation of particles and ensure the overall screening efficiency. At the same time, the screening element is cleaned by the cleaning element during the screening process to avoid the particles being blocked in the mesh and ensure the stability of the screening. The present invention has a simple structure, avoids the accumulation of particles and the blocking of the mesh, improves the screening efficiency and ensures the screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 A partial enlarged view of the middle part;

[0028] Figure 3 For the present invention Figure 1 A partial enlarged view of point B in the middle;

[0029] Figure 4 This is a schematic diagram of the diversion channel structure of the present invention;

[0030] Figure 5 It is a schematic diagram of the top surface structure of the support frame of the present invention;

[0031] Figure 6 It is a schematic diagram of the side structure of the support frame of the present invention;

[0032] Among them, 1. screening box; 2. granulator; 3. diversion trough; 4. screening trough; 5. screening cylinder; 6. rotating shaft; 7. diversion plate; 8. diversion channel; 9. diversion hole; 10. first motor; 11. support frame; 12. slider; 13. screening rod; 14. connecting rod; 15. fixing block; 16. support plate; 17. cylinder; 18. collecting trough; 19. screening net; 20. first collecting port; 21. second collecting port; 22. support shaft; 23. cleaning roller; 24. second motor; 25. transmission shaft; 26. first gear; 27. gear ring; 28. second gear; 29. ​​guide plate; 30. cleaning protrusion. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Reference Figure 1-Figure 6 The present invention provides a granulation and screening device for polymer materials, comprising:

[0036] The screening box 1 is fixedly connected to the bottom end of the granulator 2;

[0037] The flow dividing assembly comprises a flow dividing slot 3 and a flow dividing piece, wherein the flow dividing slot 3 is fixedly connected in the screening box 1 and communicated with the bottom end of the granulator 2, and the flow dividing piece is arranged in the screening box 1 for dividing the particles;

[0038] The primary screening assembly includes a plurality of screening slots 4 and a plurality of screening elements. The plurality of screening slots 4 are fixedly connected to the diverter slots 3 along the circumferential direction and are respectively connected to the diverter elements. The screening elements are arranged in the screening slots 4 for primary screening of particles.

[0039] The secondary screening component includes a plurality of screening cylinders 5, a plurality of screening elements and a plurality of cleaning elements. The plurality of screening cylinders 5 are fixedly connected to the screening box 1 along the circumferential direction and are respectively connected to the plurality of screening elements. The screening elements and the cleaning elements are respectively arranged in the screening cylinders 5. The screening elements are used for screening particles, and the cleaning elements are used for cleaning the screening elements.

[0040] A further optimized solution is that the diverter member includes a rotating shaft 6 rotatably connected to the bottom end of the diverter groove 3, a diverter plate 7 is fixedly connected to the rotating shaft 6, a plurality of diverter channels 8 are circumferentially opened on the diverter plate 7, a plurality of diverter holes 9 are circumferentially opened at the bottom end of the diverter groove 3, the plurality of diverter channels 8 correspond one to one with the plurality of diverter holes 9, a first motor 10 is fixedly connected to the bottom end of the diverter groove 3, and the bottom end of the rotating shaft 6 extends out of the diverter groove 3 and is fixedly connected to the output shaft of the first motor 10.

[0041] Reference Figure 1 The particles produced by the granulator 2 fall into the diverter trough 3, and the diverter plate 7 is driven to rotate by the first motor 10. When the diverter channel 8 on the diverter plate 7 is aligned with the diverter hole 9, the particles are transported to the screening trough 4. By diverting, the particles are avoided from piling up, thus ensuring the subsequent screening efficiency.

[0042] A further optimized solution is provided, in which the screening component includes a support frame 11 fixedly connected to the screening trough 4, a plurality of sliders 12 are slidably connected to the opposite side walls of the support frame 11, a screening rod 13 is fixedly connected between the two opposite sliders 12, and the spacing between the two adjacent screening rods 13 is equal. Connecting rods 14 are hinged on both sides of the bottom end of the slider 12, and the other ends of the two connecting rods 14 between the two adjacent sliders 12 are hinged with fixed blocks 15, and the plurality of fixed blocks 15 are slidably connected to the support plate 16, a cylinder 17 is fixedly connected to the screening trough 4, and the output end of the cylinder 17 is fixedly connected to the support plate 16, one end of the screening trough 4 is connected to the diversion hole 9, a collecting trough 18 is fixedly connected to the bottom end of the screening trough 4, and the collecting trough 18 is connected to the screening cylinder 5.

[0043] Reference Figure 2 , Figure 4 , Figure 5 The support plate 16 is driven to move by the cylinder 17, and the movement of the support plate 16 drives the slider 12 to move, so as to adjust the distance between two adjacent sliders 12, so that two adjacent screening rods 13 can screen particles of different specifications to achieve primary screening. The screened particles are transported to the screening cylinder 5, and the larger particles are discharged through the guide plate 29 for collection.

[0044] A further optimized solution is that the screening element includes a screening net 19 rotatably connected to the screening cylinder 5, a gap is arranged between the outer wall of the screening net 19 and the inner wall of the screening cylinder 5, and a first collecting port 20 and a second collecting port 21 are respectively provided at the bottom and the middle of one end of the screening cylinder 5 away from the collecting groove 18, the first collecting port 20 is connected to the bottom of the gap, and the second collecting port 21 is connected to the screening net 19.

[0045] Reference Figure 1 The gap is used to collect the screened particles. The screened particles are collected through the first collecting port 20 , and the particles in the screening net 19 are collected through the second collecting port 21 .

[0046] A further optimized solution is that the cleaning member includes a support shaft 22 rotatably connected to the screening cylinder 5 , the support shaft 22 is located at the top of the gap, a cleaning roller 23 is fixedly connected to the support shaft 22 , and the cleaning roller 23 contacts the top of the outer side wall of the screening net 19 .

[0047] Reference Figure 1 , Figure 3 The cleaning roller 23 is rotated to push out the particles blocked in the mesh of the screening net 19, thereby cleaning the screening net 19.

[0048] To further optimize the solution, a second motor 24 is fixedly connected to the outer wall of the screening drum 5, the output shaft of the second motor 24 extends into the screening drum 5 and is fixedly connected to the first gear 26 through the transmission shaft 25, a gear ring 27 is fixedly connected to the outer wall of one end of the screening net 19, and a second gear 28 is fixedly connected to the support shaft 22, and the gear ring 27 and the second gear 28 are respectively meshed with the first gear 26.

[0049] Reference Figure 3 The first gear 26 is driven to rotate by the second motor 24, and the first gear 26 drives the second gear 28 and the gear ring 27 to rotate when rotating, so that the screening net 19 and the cleaning roller 23 are synchronously driven to rotate by the second motor 24.

[0050] According to a further optimized solution, a guide plate 29 is fixedly connected to one end of the screening tank 4 away from the diversion hole 9 .

[0051] Reference Figure 1 The particles with qualified size in the screening slot 4 are transported to the screening cylinder 5 through the gaps between the screening rods 13, and the particles with larger size are blocked by the screening rods 13 and slide to the guide plate 29, and are guided out and collected through the guide plate 29.

[0052] To further optimize the solution, the screening drum 5 is arranged at an incline.

[0053] According to a further optimized solution, a plurality of cleaning protrusions 30 are fixedly connected to the cleaning roller 23 .

[0054] Reference Figure 3 The cleaning protrusion 30 is adapted to the mesh of the screening net 19, so that when it rotates with the cleaning roller 23, it can extend into the mesh of the screening net 19 to push out the blocked particles, thereby ensuring the subsequent screening efficiency.

[0055] A granulation and screening method for polymer materials comprises the following steps:

[0056] After granulation by the granulator 2, the granules are transported to the diversion trough 3 for diversion through the diversion element;

[0057] The particles produced by the granulator 2 fall into the diverter trough 3, and the diverter plate 7 is driven to rotate by the first motor 10. When the diverter channel 8 on the diverter plate 7 is aligned with the diverter hole 9, the particles are transported to the screening trough 4. By diverting, particle accumulation is avoided and subsequent screening efficiency is guaranteed.

[0058] The diverted particles are initially screened by the screening element, and the particles after the initial screening are transported to the screening cylinder 5;

[0059] The support plate 16 is driven to move by the provided cylinder 17, and the movement of the support plate 16 drives the slider 12 to move, so as to adjust the distance between two adjacent sliders 12, so that two adjacent screening rods 13 can screen particles of different specifications to achieve primary screening. The screened particles are transported to the screening cylinder 5, and the larger particles are discharged through the guide plate 29 for collection.

[0060] The particles in the screening cylinder 5 are subjected to secondary screening by the screening element to screen out the desired particles, and the screening element is cleaned by the cleaning element during the screening process.

[0061] The first gear 26 is driven to rotate by the second motor 24, and the rotation of the first gear 26 drives the second gear 28 and the gear ring 27 to rotate, so that the second motor 24 drives the screening net 19 and the cleaning roller 23 to rotate synchronously. When the screening net 19 rotates, it drives the internal particles to rotate and screen. The screened particles fall into the gap below and are discharged through the first collecting port 20 for collection. The particles inside the screening net 19 are discharged and collected through the second collecting port 21. At the same time, the cleaning roller 23 rotates synchronously with the screening net 19. When the cleaning roller 23 rotates, it drives the cleaning protrusion 30 to extend into the mesh of the screening net 19, and pushes the particles blocked in the mesh out and drops them into the screening net 19 for screening again.

[0062] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0063] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A granulation and screening device for polymer materials, characterized in that: include: A screening box (1) is fixedly connected to the bottom end of the granulator (2); A flow diversion component, comprising a flow diversion trough (3) and a flow diversion piece, wherein the flow diversion trough (3) is fixedly connected in the screening box (1) and communicated with the bottom end of the granulator (2), and the flow diversion piece is arranged in the screening box (1) for diverting particles; A primary screening component, comprising a plurality of screening slots (4) and a plurality of screening elements, wherein the plurality of screening slots (4) are fixedly connected to the diverter slots (3) along the circumferential direction and are respectively connected to the diverter elements, and the screening elements are arranged in the screening slots (4) for primary screening of particles; A secondary screening component comprises a plurality of screening cylinders (5), a plurality of screening elements and a plurality of cleaning elements. The plurality of screening cylinders (5) are fixedly connected in the screening box (1) along the circumferential direction and are respectively connected to the plurality of screening elements. The screening elements and the cleaning elements are respectively arranged in the screening cylinders (5). The screening elements are used for screening particles, and the cleaning elements are used for cleaning the screening elements.

2. The granulation and screening device for polymer materials according to claim 1, characterized in that: The flow diverter member comprises a rotating shaft (6) rotatably connected to the bottom end of the diverter groove (3); a diverter plate (7) is fixedly connected to the rotating shaft (6); a plurality of diverter channels (8) are circumferentially provided on the diverter plate (7); a plurality of diverter holes (9) are circumferentially provided at the bottom end of the diverter groove (3); the plurality of diverter channels (8) correspond to the plurality of diverter holes (9) in a one-to-one manner; a first motor (10) is fixedly connected to the bottom end of the diverter groove (3); and the bottom end of the rotating shaft (6) extends out of the diverter groove (3) and is fixedly connected to the output shaft of the first motor (10).

3. The granulation and screening device for polymer materials according to claim 2, characterized in that: The screening element comprises a support frame (11) fixedly connected to the screening trough (4); a plurality of sliders (12) are slidably connected to opposite side walls of the support frame (11); a screening rod (13) is fixedly connected between two opposite sliders (12); the spacing between two adjacent screening rods (13) is equal; connecting rods (14) are hingedly connected to both sides of the bottom end of the slider (12); the other ends of the two connecting rods (14) between two adjacent sliders (12) are hingedly connected to fixing blocks (15); the plurality of fixing blocks (15) are slidably connected to a support plate (16); a cylinder (17) is fixedly connected to the screening trough (4); the output end of the cylinder (17) is fixedly connected to the support plate (16); one end of the screening trough (4) is connected to the diversion hole (9); a collecting trough (18) is fixedly connected to the bottom end of the screening trough (4); the collecting trough (18) is connected to the screening cylinder (5).

4. The granulation and screening device for polymer materials according to claim 3, characterized in that: The screening element comprises a screening net (19) rotatably connected to the screening cylinder (5); a gap is provided between the outer wall of the screening net (19) and the inner wall of the screening cylinder (5); a first collecting port (20) and a second collecting port (21) are respectively provided at the bottom and the middle of one end of the screening cylinder (5) away from the collecting groove (18); the first collecting port (20) is communicated with the bottom of the gap, and the second collecting port (21) is communicated with the screening net (19).

5. The granulation and screening device for polymer materials according to claim 4, characterized in that: The cleaning member comprises a support shaft (22) rotatably connected to the screening cylinder (5), the support shaft (22) being located at the top of the gap, a cleaning roller (23) being fixedly connected to the support shaft (22), and the cleaning roller (23) being in contact with the top of the outer side wall of the screening net (19).

6. The granulation and screening device for polymer materials according to claim 5, characterized in that: A second motor (24) is fixedly connected to the outer wall of the screening cylinder (5); an output shaft of the second motor (24) extends into the screening cylinder (5) and is fixedly connected to a first gear (26) via a transmission shaft (25); a gear ring (27) is fixedly connected to the outer wall of one end of the screening net (19); a second gear (28) is fixedly connected to the support shaft (22); the gear ring (27) and the second gear (28) are respectively meshed with the first gear (26).

7. The granulation and screening device for polymer materials according to claim 3, characterized in that: One end of the screening trough (4) away from the diversion hole (9) is fixedly connected to a guide plate (29).

8. The granulation and screening device for polymer materials according to claim 1, characterized in that: The screening cylinder (5) is arranged tilted.

9. The granulation and screening device for polymer materials according to claim 5, characterized in that: A plurality of cleaning protrusions (30) are fixedly connected to the cleaning roller (23).

10. A granulation and screening method for polymer materials, applicable to the granulation and screening device for polymer materials according to claim 1, characterized in that: The following steps are involved: After granulation, the granulator (2) conveys the granules to the diversion trough (3) for diversion through the diversion element; The diverted particles are subjected to primary screening by a screening element, and the particles after primary screening are transported to a screening cylinder (5); The particles in the screening cylinder (5) are subjected to secondary screening by the screening element to screen out the desired particles, and the screening element is cleaned by the cleaning element during the screening process.

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