Waste plastic screening device

Abstract

The utility model relates to the technical field of waste plastic treatment, in particular to a waste plastic screening device which comprises a box body, two smashing rollers are rotationally connected between the front side and the rear side of the inner wall of the box body, a rotating shaft located below the two smashing rollers is rotationally connected between the front side and the rear side of the inner wall of the box body, and the outer wall of the rotating shaft is fixedly connected with a steering plate. Electromagnets are mounted at the upper and lower ends of the steering plate; a connecting shaft penetrating through the box body is fixedly connected to the rear end of the rotating shaft; when the waste plastic is added, iron products in the waste plastic are attracted by the electromagnets on the upper side, after the electromagnets on the upper side are attracted to a certain degree, the two electromagnets rotate by 180 degrees, then the electromagnets rotating to the upper side attract the iron products, and after the two electromagnets are attracted to a certain degree, adding of the waste plastic is stopped; and the two electromagnets are closed, so that the iron products can fall down, and the purposes that the iron products in the crushed plastic can be screened out conveniently, and waste plastic recycling is facilitated are further achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste plastic treatment, in particular to a waste plastic screening device. Background Technique

[0002] Waste plastics refer to discarded or abandoned plastic products, which can be waste materials generated during the production process or waste generated during the consumption process. These plastics include various plastic bags, bottles, containers, packaging materials, toys and other plastic products, as well as waste materials in industrial production. Since waste plastics are difficult to degrade in the environment and will cause pollution and harm to soil, water sources and wild animals and plants, effective treatment and recycling are required. Recycling waste plastics can reduce resource waste and environmental pollution, and can also provide raw materials for the production of recycled plastics.

[0003] In the prior art, when recycling waste plastics, they need to be crushed first. However, the crushed plastics often contain some iron products, and most devices in the recycling process cannot screen out the iron products, so it is not conducive to the recycling and utilization of waste plastics. Therefore, it is necessary to propose a waste plastic screening device to solve the above problems. Summary of the Invention

[0004] The purpose of the utility model is to provide a waste plastic screening device, which has the characteristics of being convenient to screen out iron products in the crushed plastics, and thus is conducive to the recycling and utilization of waste plastics.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A waste plastic screening device includes a box body. Between the front and rear sides of the inner wall of the box body, two crushing rollers are rotatably connected. Between the front and rear sides of the inner wall of the box body, a rotating shaft is rotatably connected below the two crushing rollers. A turning plate is fixedly connected to the outer wall of the rotating shaft, and electromagnetic magnets are installed at both the upper and lower ends of the turning plate.

[0006] The rear end of the rotating shaft is fixedly connected to a connecting shaft that penetrates the box body. The rear end of the connecting shaft is fixedly connected to a worm gear. A driving frame is installed at the rear side of the box body. Inside the driving frame, a worm that meshes with the worm gear is rotatably connected. The worm is driven by a first motor installed at the upper end of the driving frame.

[0007] To facilitate observing the adsorption situation of iron products on the electromagnetic magnet rotated to the upper side, as a preferred waste plastic screening device of the utility model, installation grooves are respectively opened through the left and right sides of the box body, and toughened glasses are installed inside the two installation grooves.

[0008] To facilitate driving the rotation of the two crushing rollers, as an optimization of the waste plastic screening device of the present utility model, connecting rods penetrating the box body are fixedly connected to the front ends of the two crushing rollers, and gears meshing with each other are fixedly connected to the front ends of the two connecting rods. An installation frame is fixedly connected to the front end of the box body, and the gear on the left side is driven by a second motor installed at the front end of the installation frame.

[0009] To facilitate guiding the waste plastic between the two crushing rollers, as an optimization of the waste plastic screening device of the present utility model, two guide plates are fixedly connected to the upper end of the inner wall of the box body.

[0010] To facilitate discharging the crushed waste plastic and iron products respectively, as an optimization of the waste plastic screening device of the present utility model, a discharge hopper is installed at the lower end of the box body.

[0011] To facilitate adding the waste plastic into the interior of the box body, as an optimization of the waste plastic screening device of the present utility model, a feed port is connected through the upper end of the box body.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The crushed waste plastic will fall and come into contact with the upper electromagnet. Since both sides of the electromagnet are inclined planes, the waste plastic can slide down, while the iron products inside the waste plastic will be adsorbed by the upper electromagnet. After the upper electromagnet adsorbs to a certain extent, when the first motor drives the worm to rotate, the two electromagnets are driven to rotate 180 degrees, and then the iron products are adsorbed by the electromagnet rotated to the upper side. After both electromagnets adsorb to a certain extent, stop adding waste plastic and turn off the two electromagnets, so that the iron products can fall, further facilitating the screening of the iron products in the crushed plastic and thus facilitating the recycling and utilization of waste plastic. Description of the Drawings

[0014] Figure 1 It is the overall front sectional view of the present utility model;

[0015] Figure 2 It is the sectional view of the box body of the present utility model seen from above;

[0016] Figure 3 It is the top view of the box body of the present utility model;

[0017] Figure 4 It is the connection structure diagram of the steering plate of the present utility model.

[0018] In the figure: 1. Box body; 2. Crushing roller; 3. Rotating shaft; 4. Steering plate; 5. Electromagnet; 6. Connecting shaft; 7. Worm gear; 8. Driving frame; 9. Worm; 10. First motor; 11. Installation groove; 12. Tempered glass; 13. Connecting rod; 14. Gear; 15. Mounting bracket; 16. Second motor; 17. Discharge hopper; 18. Guide plate. Specific implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0021] Please refer to Figures 1 to 4 , a waste plastic screening device, including a box body 1, two crushing rollers 2 are rotatably connected between the front and rear sides of the inner wall of the box body 1, a rotating shaft 3 is rotatably connected between the front and rear sides of the inner wall of the box body 1 and is located below the two crushing rollers 2, a steering plate 4 is fixedly connected to the outer wall of the rotating shaft 3, and electromagnets 5 are installed at both the upper and lower ends of the steering plate 4;

[0022] The rear end of the rotating shaft 3 is fixedly connected to a connecting shaft 6 that penetrates the box body 1, the rear end of the connecting shaft 6 is fixedly connected to a worm gear 7, a driving frame 8 is installed at the rear side of the box body 1, and a worm 9 that meshes with the worm gear 7 is rotatably connected inside the driving frame 8, and the worm 9 is driven by a first motor 10 installed at the upper end of the driving frame 8.

[0023] In this embodiment: By rotating the two crushing rollers 2, the waste plastics can be crushed. The crushed waste plastics will fall between the two crushing rollers 2 and come into contact with the upper electromagnet 5. Since both sides of the electromagnet 5 are inclined planes, the waste plastics can slide off, while the iron products inside the waste plastics will be adsorbed by the upper electromagnet 5. After the upper electromagnet 5 adsorbs to a certain extent, the first motor 10 is driven to rotate the worm 9, which in turn drives the worm wheel 7 to rotate, and at the same time drives the connecting shaft 6, the rotating shaft 3, the steering plate 4 and the two electromagnets 5 to rotate 180 degrees. Then, the iron products are adsorbed by the electromagnet 5 rotated to the upper side. After both electromagnets 5 adsorb to a certain extent, adding waste plastics is stopped and the two electromagnets 5 are turned off, so that the iron products can fall, further facilitating the screening of the iron products in the crushed plastics, and further facilitating the recycling of waste plastics. Further, after the upper electromagnet 5 finishes adsorption, the first motor 10 drives the two electromagnets 5 to rotate 180 degrees in the reverse direction and adsorbs in the same steps.

[0024] As a technical optimization scheme of the present utility model, installation grooves 11 are respectively formed through the left and right sides of the box body 1, and toughened glasses 12 are installed inside the two installation grooves 11.

[0025] In this embodiment: By providing the two installation grooves 11, it is convenient to install the two toughened glasses 12, and through the two toughened glasses 12, it is convenient to observe the adsorption situation of the iron products on the upper electromagnet 5 after rotation.

[0026] As a technical optimization scheme of the present utility model, connecting rods 13 penetrating the box body 1 are fixedly connected to the front ends of the two crushing rollers 2, and gears 14 meshing with each other are fixedly connected to the front ends of the two connecting rods 13. An installation frame 15 is fixedly connected to the front end of the box body 1, and the gear 14 on the left side is driven by a second motor 16 installed at the front end of the installation frame 15.

[0027] In this embodiment: By driving the left gear 14 to rotate by the second motor 16, the right gear 14 can be driven to rotate, and at the same time the two connecting rods 13 and the two crushing rollers 2 can be driven to rotate.

[0028] As a technical optimization scheme of the present utility model, two guide plates 18 are fixedly connected to the upper end of the inner wall of the box body 1.

[0029] In this embodiment: By providing the two guide plates 18, it is convenient to guide the waste plastics between the two crushing rollers 2.

[0030] As a technical optimization scheme of the present utility model, a discharge hopper 17 is installed at the lower end of the box body 1.

[0031] In this embodiment, a discharge hopper 17 is provided to facilitate the discharging of the shredded waste plastics and iron products respectively.

[0032] As a technical optimization scheme of the present utility model, a feed inlet is connected through the upper end of the box body 1.

[0033] In this embodiment, by providing a feed inlet, it is convenient to add waste plastics into the interior of the box body 1.

[0034] Working principle: First, add waste plastics into the interior of the box body 1 through the feed inlet, and guide them between the two crushing rollers 2 through the two guide plates 18. At the same time, drive the left gear 14 to rotate through the second motor 16, which can then drive the right gear 14 to rotate, and drive the two connecting rods 13 and the two crushing rollers 2 to rotate. Thus, the waste plastics can be crushed by the two crushing rollers 2. The crushed waste plastics will fall between the two crushing rollers 2 and come into contact with the upper electromagnet 5. Since both sides of the electromagnet 5 are inclined planes, the waste plastics can slide and be discharged through the discharge hopper 17. The iron products inside the waste plastics will be adsorbed by the upper electromagnet 5. The adsorption situation of the iron products on the upper electromagnet 5 can be observed through the two toughened glasses 12. After the upper electromagnet 5 adsorbs to a certain extent, drive the worm 9 to rotate through the first motor 10, which can then drive the worm wheel 7 to rotate, and drive the connecting shaft 6, the rotating shaft 3, the turning plate 4, and the two electromagnets 5 to rotate 180 degrees. Thus, the iron products can be adsorbed by the upper electromagnet 5 after rotation. After both electromagnets 5 adsorb to a certain extent, stop adding waste plastics and turn off the two electromagnets 5. Then the iron products can fall and be discharged through the discharge hopper 17, further achieving the purpose of facilitating the screening of iron products in the crushed plastics, and thus facilitating the recycling of waste plastics. Further, after the upper electromagnet 5 finishes adsorption, drive the two electromagnets 5 to rotate 180 degrees in the reverse direction through the first motor 10 and perform adsorption in the same steps.

[0035] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A waste plastic screening device, comprising a box body (1), characterized in that: There are two crushing rollers (2) rotatably connected between the front and rear sides of the inner wall of the box body (1). There is a rotating shaft (3) rotatably connected between the front and rear sides of the inner wall of the box body (1) and located below the two crushing rollers (2). A turning plate (4) is fixedly connected to the outer wall of the rotating shaft (3), and electromagnets (5) are installed at both the upper and lower ends of the turning plate (4). The rear end of the rotating shaft (3) is fixedly connected to a connecting shaft (6) that penetrates the box body (1). A worm gear (7) is fixedly connected to the rear end of the connecting shaft (6). A driving frame (8) is installed at the rear side of the box body (1). A worm (9) that meshes with the worm gear (7) is rotatably connected inside the driving frame (8), and the worm (9) is driven by a first motor (10) installed at the upper end of the driving frame (8).

2. The waste plastic screening device according to claim 1, wherein: Installation grooves (11) are respectively formed through the left and right sides of the box body (1), and toughened glasses (12) are installed inside the two installation grooves (11).

3. The waste plastic screening device according to claim 1, wherein: The front ends of the two crushing rollers (2) are respectively fixedly connected to connecting rods (13) that penetrate the box body (1). Gears (14) that mesh with each other are fixedly connected to the front ends of the two connecting rods (13). An installation frame (15) is fixedly connected to the front end of the box body (1), and the gear (14) on the left side is driven by a second motor (16) installed at the front end of the installation frame (15).

4. A waste plastic screening device according to claim 1, characterized in that: Two guide plates (18) are fixedly connected to the upper end of the inner wall of the box body (1).

5. A waste plastic screening device according to claim 1, characterized in that: A discharge hopper (17) is installed at the lower end of the box body (1).

6. A waste plastic screening device according to claim 1, characterized in that: A feed inlet is connected through the upper end of the box body (1).

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