A screening device for plastic particles

Abstract

The utility model relates to the technical field of plastics production, specifically disclose a kind of screening device for plastic particle processing, including screening box, the feeding bin is arranged at the top of screening box, the side of screening box is provided with two discharge ports;Screening, the screening is located in screening box, the side of screening is provided with first material port;Material guiding box, the material guiding box is fixedly installed at the bottom end of screening, the material guiding box is installed in screening box by multiple elastic support structures, the side of material guiding box is provided with second material port, the second material port and bearing block are respectively matched with adjacent discharge port, the bottom end of material guiding box is provided with bearing block;Support frame, the support frame is arranged in the bottom wall of screening box.The utility model has amplitude adjustable type screening structure, improves the classification accuracy, expands the use range of screening device, has plastic particle automatic guiding structure, improves screening efficiency, reduces artificial cost.

Description

Technical Field

[0001] This utility model relates to the field of plastic production technology, specifically to a screening device for processing plastic particles. Background Technology

[0002] Plastic pellets, also known as plastic granules, are raw materials for storing, transporting, and processing plastics in a semi-finished form. Common types of plastic pellets include general-purpose plastics, engineering plastics, and specialty plastics. Screening is an essential step in the processing of plastic pellets. Before injection molding, extrusion, and other processing, plastic pellets need to be graded by a screening device according to their particle size.

[0003] Chinese patent (CN222538094U) discloses a plastic particle screening device, including two bases, drawers fixedly installed on the top surfaces of the two bases, a collection box slidably connected inside the drawers, a shaking component on one side surface of the drawers, four support frames with long plates fixedly installed between each pair, two sliding plates slidably connected to the surfaces of the two long plates, sliders slidably connected to the surfaces of the two support rods, a screening box fixedly installed between the opposite sides of the four sliders, and limiting components on the inner wall surfaces of both ends of the U-shaped plate.

[0004] However, the aforementioned technologies have some drawbacks. For example, during the use of plastic particle screening devices, the amplitude of the vibrating screen is not adjustable, which leads to the mixing of fine particles with qualified particles, resulting in insufficient grading accuracy and a limited range of applications. On the other hand, the screened plastic particles need to be manually removed from the device, resulting in relatively high labor costs. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a screening device for processing plastic particles, which can overcome the above-mentioned technical defects.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A screening device for processing plastic particles, comprising:

[0008] A screening box, wherein a feed hopper is provided at the top of the screening box and two discharge ports are provided on one side of the screening box;

[0009] A screen, the screen being located inside a screening box, with a first material inlet on one side of the screen;

[0010] A guide box is fixedly installed at the bottom of the screen. The guide box is installed in the screening box through multiple sets of elastic support structures. A second material port is provided on one side of the guide box. The second material port and the bearing block are respectively matched with the adjacent discharge port. A bearing block is provided at the bottom of the guide box.

[0011] A support frame is disposed on the bottom wall of the screening box;

[0012] A crank-rocker mechanism is installed between a support frame and a guide box. The crank-rocker mechanism includes a rocker body and a crank body, which are rotatably connected. The rocker body is axially extendable. A first motor is provided on the side wall of the support frame. The output shaft of the first motor is keyed to one end of the crank body. The bearing block is rotatably connected to one end of the rocker body via a pin.

[0013] Preferably, the bottom of the screening box is provided with a plurality of universal pulleys arranged in an array, and the universal pulleys are provided with a self-locking structure.

[0014] Preferably, the elastic support structure includes a spring sheet, one end of which is fixedly connected to the side wall of the guide box, and the other end of the spring sheet away from the guide box is fixedly connected to a support block, which is fixedly connected to the inner wall of the screening box.

[0015] Preferably, the rocker arm body includes a support frame, a support tube is provided at the end of the support frame away from the crank body, a support cylinder is slidably sleeved inside the support tube, a connecting ring is rotatably installed at the end of the support cylinder away from the support frame, the connecting ring is rotatably connected to the bearing block, a screw is rotatably installed inside the support tube, the support cylinder and the screw are threadedly connected, a second motor is provided on the inner wall of the support frame, and the output shaft of the second motor is fixedly connected to the screw through a coupling.

[0016] Preferably, the connecting ring sidewall is provided with a variable diameter column, and the variable diameter column is rotatably connected to the support cylinder.

[0017] Preferably, the second motor sidewall is provided with a support ring, and the inner wall of the support tube is provided with a limit ring, and the support ring and the limit ring are rotatably connected.

[0018] The beneficial effects of this utility model are as follows:

[0019] By setting up a screening box, the grading accuracy is adjusted according to the grading accuracy requirements of the plastic particles to be screened. The second motor drives the screw to rotate, which drives the support cylinder to rotate and move inside the support tube. The connecting ring moves synchronously, thus completing the adjustment of the length of the rocker arm body and the adjustment of the screen amplitude.

[0020] It features an adjustable amplitude screening structure, which improves the grading accuracy and expands the application range of the screening device.

[0021] By setting up a screen and a guide box, the plastic particles to be screened are poured from the feed hopper into the screening box. The first motor drives the crank body to rotate, and the rocker body is driven. With the help of the support block and the spring, the guide box and the screen vibrate synchronously. The fine plastic particles flow out of the screening box from the guide box and the adjacent discharge port, while the coarser plastic particles flow out of the screening box from the screen and the adjacent discharge port.

[0022] It features an automatic plastic particle discharge structure, which improves screening efficiency and reduces labor costs. Attached Figure Description

[0023] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is an installation structure diagram of the screen and guide box in this utility model;

[0026] Figure 3 This is an installation structure diagram of the support block and the guide box in this utility model;

[0027] Figure 4 This is an installation structure diagram of the crank-retractor mechanism in this utility model;

[0028] Figure 5 This is a diagram showing the installation structure of the screw and the second motor in this utility model.

[0029] Figure 6 This is an exploded view of the crank-rocker mechanism in this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] In the diagram: 1. Screening box; 11. Feed hopper; 12. Universal pulley; 13. Discharge port; 2. Screen; 21. First feed port; 3. Guide box; 31. Second feed port; 32. Bearing block; 41. Spring; 42. Support block; 5. Support frame; 6. Crank-rocker mechanism; 61. Rocker body; 62. Crank body; 63. First motor; 71. Support frame; 72. Support tube; 73. Support cylinder; 74. Connecting ring; 75. Screw; 76. Second motor; 77. Support ring; 78. Limiting ring; 81. Variable diameter column. Detailed Implementation

[0032] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects of this utility model are clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this application, it should be understood that the orientation or positional relationship indicated by terms such as "inner" and "outer" are based on the orientation or position shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore should not be construed as a limitation of this application.

[0034] Reference Figures 1-6 The present invention discloses a screening device for processing plastic particles, comprising: a screening box 1, a feeding bin 11 at the top of the screening box 1, a plurality of universal pulleys 12 arranged in an array at the bottom of the screening box 1, the universal pulleys 12 having a self-locking structure, and two discharge ports 13 on one side of the screening box 1.

[0035] Screen 2 is located inside screening box 1, and a first feed port 21 is provided on one side of screen 2.

[0036] The guide box 3 is fixedly installed at the bottom of the screen 2. The guide box 3 is installed in the screening box 1 through multiple sets of elastic support structures. The elastic support structure includes a spring piece 41. One end of the spring piece 41 is fixedly connected to the side wall of the guide box 3. The end of the spring piece 41 away from the guide box 3 is fixedly connected to a support block 42. The support block 42 is fixedly connected to the inner wall of the screening box 1. A second material outlet 31 is provided on one side of the guide box 3. The second material outlet 31 and the support block 32 are respectively matched with the adjacent discharge outlet 13. A support block 32 is provided at the bottom of the guide box 3.

[0037] Support frame 5 is installed on the bottom wall of screening box 1.

[0038] A crank-rocker mechanism 6 is installed between the support frame 5 and the guide box 3. The crank-rocker mechanism 6 includes a rocker body 61 and a crank body 62, which are rotatably connected. The rocker body 61 is axially extendable. A first motor 63 is provided on the side wall of the support frame 5. The output shaft of the first motor 63 is keyed to one end of the crank body 62. A bearing block 32 is rotatably connected to one end of the rocker body 61 via a pin. The rocker body 61 includes a support frame 71. A support tube 72 is provided at the end of the support frame 71 away from the crank body 62. A support is slidably sleeved inside the support tube 72. A connecting ring 74 is rotatably mounted on the end of the support tube 73 away from the support frame 71. The connecting ring 74 is rotatably connected to the bearing block 32. A reducing column 81 is provided on the side wall of the connecting ring 74. The reducing column 81 is rotatably connected to the support tube 73. A screw 75 is rotatably mounted inside the support tube 72. The support tube 73 is threadedly connected to the screw 75. A second motor 76 is provided on the inner wall of the support frame 71. The output shaft of the second motor 76 is fixedly connected to the screw 75 through a coupling. A support ring 77 is provided on the side wall of the second motor 76. A limit ring 78 is provided on the inner wall of the support tube 72. The support ring 77 and the limit ring 78 are rotatably connected.

[0039] The working principle and usage process of this utility model are as follows: First, according to the grading accuracy requirements of the plastic particles to be screened, the grading accuracy is adjusted. The second motor 76 drives the screw 75 to rotate, which drives the support cylinder 73 to rotate and move within the support tube 72. The connecting ring 74 moves synchronously, completing the adjustment of the length of the rocker arm body 61 and the adjustment of the amplitude of the screen 2. Second, during use, the plastic particles to be screened are poured from the feed hopper 11 into the screening box 1. The first motor 63 drives the crank body 62 to rotate, and the rocker arm body 61 is driven. In conjunction with the support block 42 and the spring plate 41, the guide box 3 and the screen 2 vibrate synchronously. Fine plastic particles flow out of the screening box 1 from the guide box 3 and the adjacent discharge port 13, while coarser plastic particles flow out of the screening box 1 from the screen 2 and the adjacent discharge port 13.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A screening device for plastic particle processing, characterized by include: Screening box (1), the top of the screening box (1) is provided with a feeding hopper (11), and two discharge ports (13) are provided on one side of the screening box (1); A screen (2) is located inside a screening box (1), and a first material inlet (21) is provided on one side of the screen (2); A guide box (3) is fixedly installed at the bottom of the screen (2). The guide box (3) is installed in the screening box (1) through multiple sets of elastic support structures. A second material port (31) is provided on one side of the guide box (3). The second material port (31) and the bearing block (32) are respectively matched with the adjacent discharge port (13). A bearing block (32) is provided at the bottom of the guide box (3). A support frame (5) is provided on the bottom wall of the screening box (1). A crank-rocker mechanism (6) is installed between a support frame (5) and a guide box (3). The crank-rocker mechanism (6) includes a rocker body (61) and a crank body (62). The rocker body (61) and the crank body (62) are rotatably connected. The rocker body (61) is axially telescopic. A first motor (63) is provided on the side wall of the support frame (5). The output shaft of the first motor (63) is keyed to one end of the crank body (62). The bearing block (32) is rotatably connected to one end of the rocker body (61) through a pin.

2. A screening apparatus for plastic particles according to claim 1, characterized in that: The bottom of the screening box (1) is provided with a plurality of universal pulleys (12) arranged in an array, and the universal pulleys (12) are provided with a self-locking structure.

3. The screening device for processing plastic particles according to claim 1, characterized in that: The elastic support structure includes a spring sheet (41), one end of which is fixedly connected to the side wall of the guide box (3), and the other end of the spring sheet (41) away from the guide box (3) is fixedly connected to a support block (42), which is fixedly connected to the inner wall of the screening box (1).

4. The screening device for processing plastic particles according to claim 1, characterized in that: The rocker arm body (61) includes a support frame (71). A support tube (72) is provided at one end of the support frame (71) away from the crank body (62). A support cylinder (73) is slidably sleeved inside the support tube (72). A connecting ring (74) is rotatably installed at one end of the support cylinder (73) away from the support frame (71). The connecting ring (74) is rotatably connected to the bearing block (32). A screw (75) is rotatably installed inside the support tube (72). The support cylinder (73) and the screw (75) are threadedly connected. A second motor (76) is provided on the inner wall of the support frame (71). The output shaft of the second motor (76) is fixedly connected to the screw (75) through a coupling.

5. A screening device for processing plastic particles according to claim 4, characterized in that: The connecting ring (74) has a variable diameter column (81) on its side wall, and the variable diameter column (81) is rotatably connected to the support cylinder (73).

6. A screening device for processing plastic particles according to claim 4, characterized in that: The second motor (76) has a support ring (77) on its side wall and a limit ring (78) on the inner wall of the support tube (72). The support ring (77) and the limit ring (78) are rotatably connected.

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