A granulation and screening device and screening method for polymer materials

Abstract

This invention relates to the field of screening devices, and discloses a granulation screening device and method for polymer materials, comprising a screening box; a flow-diverting assembly including a flow-diverting trough and flow-diverting elements, the flow-diverting elements being disposed within the screening box for diverting particles; a primary screening assembly including several screening troughs and several first screening elements, the screening troughs being fixedly connected circumferentially to the flow-diverting trough and respectively communicating with the flow-diverting elements, the first screening elements being disposed within the screening troughs for primary screening of particles; and a secondary screening assembly including several screening cylinders, several second screening elements, and several cleaning elements, the screening cylinders being fixedly connected circumferentially within the screening box and respectively communicating with the first screening elements, the second screening elements and cleaning elements being disposed within the screening cylinders, the second screening elements being used to screen particles, and the cleaning elements being used to clean the second screening elements. This invention has a simple structure, avoids particle accumulation and mesh clogging, improves screening efficiency, and ensures screening effect.

Description

Technical Field

[0001] This invention relates to the field of screening device technology, and in particular to a granulation screening device and screening method for polymer materials. Background Technology

[0002] Polymer materials, also known as high molecular weight polymers, are materials composed of high molecular weight compounds as a matrix, along with other additives. Polymer materials are classified into natural polymers and synthetic polymers based on their origin. Natural polymers are macromolecular substances found in animals, plants, and other organisms, while synthetic polymers possess properties that natural polymers lack or have superior to, such as lower density, higher mechanical strength, wear resistance, corrosion resistance, and electrical insulation.

[0003] In the production of polymer materials, the raw materials, additives, and functional components of the polymer are fed into a granulator, which then produces granules. This process is widely used in spinning, plastic modification, and other fields. To make the granulated polymer materials more uniform in size, they are screened. Existing screening devices often involve conveying a large amount of particles onto a screen and vibrating it for screening. On the one hand, a large amount of particles tends to accumulate on the screen after being conveyed, affecting the overall screening efficiency. On the other hand, particles with a mesh size similar to the mesh size tend to clog the mesh, and simple vibration screening cannot dislodge them, causing the screen to gradually clog and affecting the subsequent screening efficiency and effect.

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

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

[0006] To achieve the above objectives, 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] The diversion assembly includes a diversion trough and a diversion component. The diversion trough is fixedly connected inside the screening box and communicates with the bottom of the granulator. The diversion component is disposed inside the screening box for diverting particles.

[0009] The primary screening component includes several screening slots and several first screening elements. The screening slots are fixedly connected to the diversion slots in the circumferential direction and are respectively connected to the diversion elements. The first screening elements are disposed in the screening slots for primary screening of particles.

[0010] The secondary screening assembly includes several screening cylinders, several second screening elements, and several cleaning elements. The screening cylinders are fixedly connected circumferentially inside the screening box and are respectively connected to several first screening elements. The second screening elements and the cleaning elements are respectively disposed inside the screening cylinders. The second screening elements are used to screen particles, and the cleaning elements are used to clean the second screening elements.

[0011] Preferably, the diverting component includes a rotating shaft rotatably connected to the bottom of the diverting groove, a diverting disk fixedly connected to the rotating shaft, a plurality of diverting channels being formed along the circumference of the diverting disk, a plurality of diverting holes being formed along the circumference of the bottom of the diverting groove, the plurality of diverting channels corresponding one-to-one with the plurality of diverting holes, a first motor being fixedly connected to the bottom of the diverting groove, and the bottom of the rotating shaft extending out of the diverting groove and fixedly connected to the output shaft of the first motor.

[0012] Preferably, the first screening component includes a support frame fixedly connected within the screening groove. Several sliders are slidably connected to opposite side walls of the support frame. A screening rod is fixedly connected between two opposing sliders, with equal spacing between adjacent screening rods. Connecting rods are hinged to both sides of the bottom end of each slider. A fixing block is hinged to the other end of the two connecting rods between adjacent sliders. Several fixing blocks are slidably connected to a support plate. A cylinder is fixedly connected to the screening groove, with its output end fixedly connected to the support plate. One end of the screening groove communicates with the diversion hole, and a collection groove is fixedly connected to the bottom end of the screening groove, communicating with the screening cylinder.

[0013] Preferably, the second screening component includes a screening screen rotatably connected inside the screening cylinder, a gap is provided between the outer wall of the screening screen and the inner wall of the screening cylinder, and a first collection port and a second collection port are respectively opened at the bottom and middle part of the end of the screening cylinder away from the collection groove, the first collection port is connected to the bottom of the gap, and the second collection port is connected to the screening screen.

[0014] Preferably, the cleaning component includes a support shaft rotatably connected inside the screening cylinder, the support shaft being located at the top of the gap, and a cleaning roller being fixedly connected to the support shaft, the cleaning roller being in contact with the top of the outer wall of the screening screen.

[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 a first gear via a transmission shaft, a gear ring is fixedly connected to the outer wall of one end of the screening screen, and a second gear is fixedly connected to the support shaft, the gear ring and the second gear meshing with the first gear respectively.

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

[0017] Preferably, the screening cylinder is inclined.

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

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

[0020] After granulation, the pellets are conveyed to the distribution tank and distributed by the distribution components.

[0021] After being diverted, the particles undergo primary screening through the first screening element, and the particles after primary screening are then conveyed into the screening cylinder.

[0022] The particles in the screening cylinder are screened through a second screening element to remove the desired particles. At the same time, the second screening element is cleaned by a cleaning element during the screening process.

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

[0024] This invention provides a granulation and screening device and method for polymer materials. A diversion tank is connected to a granulator. The manufactured granules fall into the diversion tank and are conveyed to a screening tank via a diversion component. Primary screening is performed by a first screening component. The screened granules are then conveyed to a screening cylinder for further screening by a second screening component, ensuring overall screening effectiveness. The diversion, primary screening, and secondary screening prevent granule accumulation and maintain overall screening efficiency. During the screening process, a cleaning component cleans the second screening component to prevent clogging of the mesh and ensure stable screening. This invention features a simple structure, avoids granule accumulation and mesh clogging, improves screening efficiency, and guarantees screening effectiveness. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0027] Figure 2 For the present invention Figure 1 Enlarged view of a portion of point A in the middle;

[0028] Figure 3 For the present invention Figure 1 Enlarged view of a section at 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 This is a schematic diagram of the top surface structure of the support frame of the present invention;

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

[0032] The components are as follows: 1. Screening box; 2. Granulator; 3. Diverter; 4. Screening trough; 5. Screening cylinder; 6. Rotating shaft; 7. Diverter plate; 8. Diverter channel; 9. Diverter hole; 10. First motor; 11. Support frame; 12. Slider; 13. Screening rod; 14. Connecting rod; 15. Fixing block; 16. Support plate; 17. Cylinder; 18. Collection trough; 19. Screening screen; 20. First collection port; 21. Second collection port; 22. Support shaft; 23. Cleaning roller; 24. Second motor; 25. Drive shaft; 26. First gear; 27. Gear ring; 28. Second gear; 29. ​​Guide plate; 30. Cleaning protrusion. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

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

[0036] Screening box 1 is fixedly connected to the bottom of granulator 2;

[0037] The diversion assembly includes a diversion trough 3 and a diversion component. The diversion trough 3 is fixedly connected inside the screening box 1 and communicates with the bottom of the granulator 2. The diversion component is set inside the screening box 1 to divert the particles.

[0038] The primary screening component includes several screening tanks 4 and several first screening elements. The screening tanks 4 are fixedly connected to the diversion tank 3 in the circumferential direction and are respectively connected to the diversion elements. The first screening elements are set in the screening tanks 4 for primary screening of particles.

[0039] The secondary screening assembly includes several screening cylinders 5, several second screening elements, and several cleaning elements. The screening cylinders 5 are fixedly connected in the circumferential direction in the screening box 1 and are respectively connected to several first screening elements. The second screening elements and the cleaning elements are respectively arranged in the screening cylinders 5. The second screening elements are used to screen particles, and the cleaning elements are used to clean the second screening elements.

[0040] The scheme is further optimized. The diversion component includes a rotating shaft 6 rotatably connected to the bottom of the diversion groove 3. A diversion disk 7 is fixedly connected to the rotating shaft 6. Several diversion channels 8 are opened along the circumference on the diversion disk 7. Several diversion holes 9 are opened along the circumference at the bottom of the diversion groove 3. The several diversion channels 8 and several diversion holes 9 correspond one-to-one. A first motor 10 is fixedly connected to the bottom of the diversion groove 3. The bottom of the rotating shaft 6 extends out of the diversion groove 3 and is fixedly connected to the output shaft of the first motor 10.

[0041] Reference Figure 1 The granules produced by the granulator 2 fall into the diversion tank 3. The first motor 10 drives the diversion plate 7 to rotate. When the diversion channel 8 on the diversion plate 7 is aligned with the diversion hole 9, the granules are transported into the screening tank 4. Through diversion, the granules are prevented from accumulating and the subsequent screening efficiency is guaranteed.

[0042] Further optimization of the scheme: The first screening component includes a support frame 11 fixedly connected in the screening tank 4. Several sliders 12 are slidably connected to the opposite side walls of the support frame 11. A screening rod 13 is fixedly connected between two opposite sliders 12. The distance between two adjacent screening rods 13 is equal. Connecting rods 14 are hinged to both sides of the bottom end of the sliders 12. The other end of the two connecting rods 14 between two adjacent sliders 12 is hinged to a fixing block 15. Several fixing blocks 15 are slidably connected to the support plate 16. A cylinder 17 is fixedly connected to the screening tank 4. The output end of the cylinder 17 is fixedly connected to the support plate 16. One end of the screening tank 4 is connected to the diversion hole 9. A collection tank 18 is fixedly connected to the bottom end of the screening tank 4. The collection tank 18 is connected to the screening cylinder 5.

[0043] Reference Figure 2 , Figure 4 , Figure 5 The cylinder 17 drives the pallet 16 to move, and the pallet 16 drives the slider 12 to move, thereby adjusting the distance between two adjacent sliders 12. This allows two adjacent screening rods 13 to screen particles of different sizes, achieving primary screening. The screened particles are then transported to the screening cylinder 5, and larger particles are discharged through the guide plate 29 for collection.

[0044] In a further optimized scheme, the second screening component includes a screening mesh 19 rotatably connected inside the screening cylinder 5. A gap is provided between the outer wall of the screening mesh 19 and the inner wall of the screening cylinder 5. A first collection port 20 and a second collection port 21 are respectively opened at the bottom and middle part of the end of the screening cylinder 5 away from the collection trough 18. The first collection port 20 is connected to the bottom of the gap, and the second collection port 21 is connected to the screening mesh 19.

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

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

[0047] Reference Figure 1 , Figure 3 The cleaning roller 23 rotates to push out the particles that are blocked in the mesh of the screen 19, thereby cleaning the screen 19.

[0048] In a further optimized design, a second motor 24 is fixedly connected to the outer wall of the screening cylinder 5. The 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 toothed ring 27 is fixedly connected to the outer wall of one end of the screening screen 19. A second gear 28 is fixedly connected to the support shaft 22. The toothed ring 27 and the second gear 28 mesh with the first gear 26, respectively.

[0049] Reference Figure 3 The second motor 24 drives the first gear 26 to rotate. When the first gear 26 rotates, it drives the second gear 28 and the gear ring 27 to rotate, thereby synchronously driving the screen 19 and the cleaning roller 23 to rotate through the second motor 24.

[0050] The scheme is further optimized by fixing a guide plate 29 to the end of the screening tank 4 away from the diversion hole 9.

[0051] Reference Figure 1 Particles of the correct size in the screening tank 4 are conveyed to the screening cylinder 5 through the gap between the screening rods 13. Larger particles are blocked by the screening rods 13 and slide to the guide plate 29, where they are discharged and collected.

[0052] The scheme was further optimized by tilting the screening cylinder 5.

[0053] The design has been further optimized by fixing several cleaning protrusions 30 on the cleaning roller 23.

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

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

[0056] After granulation by granulator 2, the granules are conveyed to the diversion tank 3 and diverted by the diversion component.

[0057] The granules produced by granulator 2 fall into the diversion tank 3. The first motor 10 drives the diversion plate 7 to rotate. When the diversion channel 8 on the diversion plate 7 is aligned with the diversion hole 9, the granules are transported into the screening tank 4. Through diversion, the granules are prevented from accumulating and the subsequent screening efficiency is guaranteed.

[0058] After being diverted, the particles undergo primary screening through the first screening element, and the particles after primary screening are then conveyed into the screening cylinder 5.

[0059] The cylinder 17 drives the pallet 16 to move, and the pallet 16 drives the slider 12 to move, thereby adjusting the distance between two adjacent sliders 12. This allows two adjacent screening rods 13 to screen particles of different sizes, achieving primary screening. The screened particles are then transported into the screening cylinder 5, and larger particles are discharged through the guide plate 29 for collection.

[0060] The particles in the screening cylinder 5 are screened through the second screening element to remove the required particles. At the same time, the second screening element is cleaned by the cleaning element during the screening process.

[0061] The second motor 24 drives the first gear 26 to rotate. When the first gear 26 rotates, it drives the second gear 28 and the gear ring 27 to rotate. Thus, the second motor 24 synchronously drives the screening screen 19 and the cleaning roller 23 to rotate. When the screening screen 19 rotates, it causes the particles inside to rotate and be screened. The screened particles fall into the gap below and are discharged through the first collection port 20 for collection. The particles inside the screening screen 19 are discharged through the second collection port 21 for collection. At the same time, the cleaning roller 23 rotates synchronously with the screening screen 19. When the cleaning roller 23 rotates, it drives the cleaning protrusion 30 to extend into the mesh of the screening screen 19, pushing out the particles blocked in the mesh and causing them to fall into the screening screen 19 for screening again.

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

[0063] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A granulation and screening device for polymer materials, characterized in that, include: Screening box (1) is fixedly connected to the bottom of granulator (2); The diversion assembly includes a diversion trough (3) and a diversion component. The diversion trough (3) is fixedly connected inside the screening box (1) and communicates with the bottom of the granulator (2). The diversion component is set inside the screening box (1) for diverting particles. The primary screening component includes several screening slots (4) and several first screening elements. The several screening slots (4) are fixedly connected to the diversion slot (3) in the circumferential direction and are respectively connected to the diversion elements. The first screening elements are set in the screening slots (4) for primary screening of particles. The secondary screening component includes several screening cylinders (5), several second screening elements and several cleaning elements. Several screening cylinders (5) are fixedly connected in the screening box (1) along the circumference and are respectively connected to several first screening elements. The second screening elements and the cleaning elements are respectively disposed in the screening cylinders (5). The second screening elements are used to screen particles, and the cleaning elements are used to clean the second screening elements. The diversion component includes a rotating shaft (6) rotatably connected to the bottom end of the diversion groove (3), a diversion disk (7) fixedly connected to the rotating shaft (6), a plurality of diversion channels (8) are circumferentially opened on the diversion disk (7), a plurality of diversion holes (9) are circumferentially opened at the bottom end of the diversion groove (3), the plurality of diversion channels (8) and the plurality of diversion holes (9) correspond one-to-one, a first motor (10) is fixedly connected to the bottom end of the diversion groove (3), and the bottom end of the rotating shaft (6) extends out of the diversion groove (3) and is fixedly connected to the output shaft of the first motor (10); the first screening component includes a support frame (11) fixedly connected in the screening groove (4), the support... A plurality of sliders (12) are slidably connected to the opposite side walls of the frame (11). A screening rod (13) is fixedly connected between two opposing sliders (12). The spacing between two adjacent screening rods (13) is equal. A connecting rod (14) is hinged to both sides of the bottom end of each slider (12). A fixing block (15) is hinged to the other end of the two connecting rods (14) between two adjacent sliders (12). A plurality of fixing blocks (15) are slidably connected to the support plate (16). A cylinder (17) is fixedly connected to the screening groove (4). The output end of the cylinder (17) is fixedly connected to the support plate (16). One end of the screening groove (4) is connected to the diversion hole (9). A collection trough (18) is fixedly connected to the bottom of the screening trough (4), and the collection trough (18) is connected to the screening cylinder (5); the second screening component includes a screening screen (19) rotatably connected inside the screening cylinder (5), and a gap is provided between the outer wall of the screening screen (19) and the inner wall of the screening cylinder (5). A first collection port (20) and a second collection port (21) are respectively opened at the bottom and middle part of one end of the screening cylinder (5) away from the collection trough (18). The first collection port (20) is connected to the bottom of the gap, and the second collection port (21) is connected to the screening screen (19); the cleaning component includes a support shaft (2) rotatably connected inside the screening cylinder (5). 2) The support shaft (22) is located at the top of the gap. A cleaning roller (23) is fixedly connected to the support shaft (22). The cleaning roller (23) contacts the top of the outer wall of the screen (19). A second motor (24) is fixedly connected to the outer wall of the screen cylinder (5). The output shaft of the second motor (24) extends into the screen cylinder (5) and is fixedly connected to a first gear (26) via a transmission shaft (25). A toothed ring (27) is fixedly connected to the outer wall of one end of the screen (19). A second gear (28) is fixedly connected to the support shaft (22). The toothed ring (27) and the second gear (28) mesh with the first gear (26) respectively.

2. The granulation and screening device for polymer materials according to claim 1, characterized in that: A guide plate (29) is fixedly connected to one end of the screening tank (4) away from the diversion hole (9).

3. The granulation and screening device for polymer materials according to claim 1, characterized in that: The screening cylinder (5) is set at an angle.

4. The granulation and screening device for polymer materials according to claim 1, characterized in that: A number of cleaning protrusions (30) are fixedly connected to the cleaning roller (23).

5. A method for granulation and screening of polymer materials, applicable to the granulation and screening device for polymer materials as described in claim 1, characterized in that, Includes the following steps: After granulation by the granulator (2), the granules are transported to the diversion tank (3) and diverted by the diversion component; After being diverted, the particles are subjected to primary screening through the first screening element, and the particles after primary screening are conveyed into the screening cylinder (5). The particles in the screening cylinder (5) are screened by the second screening element to select the required particles. At the same time, the second screening element is cleaned by the cleaning element during the screening process.

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