Device for screening thermoplastic plastics after processing of waste plastics

Abstract

The utility model relates to a thermoplastic plastic screening device after waste plastic processing, which belongs to the technical field of waste plastic processing and comprises a flotation tank, a mounting support is arranged on the back of the flotation tank, a drainage pipeline is arranged in the flotation tank, and a fishing structure and a control structure are arranged on the mounting support. According to the thermoplastic plastic screening device after waste plastic processing, an electric push rod in a lifting part is used for controlling a scoop net part to sink into a flotation tank, and then an asynchronous motor drives a threaded rod to rotate, so that a connecting plate in threaded connection with the outer side of the threaded rod drives the scoop net part to move towards one side through a connecting piece; the floating waste plastic is collected and attached to the inner wall of the flotation tank through a net bag in the fishing net component, then the electric push rod is controlled again to contract and drive the float to fish up the collected waste plastic, and therefore the floating waste plastic is automatically fished, the labor intensity of workers is reduced, and the fishing efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of waste plastic processing technology, specifically to a thermoplastic plastic screening device after waste plastic processing. Background Technology

[0002] Waste plastic processing is the process of recycling and processing waste plastics to make them usable thermoplastics again. Its main purpose is to reuse plastic waste, reduce environmental pollution, and reduce resource consumption in the plastic production process. The processing flow generally includes collection, cleaning, crushing, screening and drying, melting and extrusion. Collection and screening are used to separate different types of waste plastics according to factors such as material and color for targeted processing. Cleaning removes dirt, impurities and labels from the surface of the waste plastics. Crushing breaks the waste plastics into smaller fragments to facilitate subsequent melting. Melting involves heating the crushed waste plastics above their melting point to make them liquid. Extrusion is the process of extruding the molten plastic through a specific mold to form new plastic products or plastic granules.

[0003] Currently, in existing technologies, waste plastics need to be screened after processing to separate waste plastics of different materials. Usually, the waste plastics are put into a flotation tank and mixed with specific flotation reagents, so that some waste plastics can float on the water surface, while other plastics or impurities remain at the bottom of the flotation tank. Then, the floating waste plastics are manually retrieved. This process is labor-intensive for workers and the flotation retrieval efficiency is generally low. Therefore, a thermoplastic plastic screening device after waste plastic processing is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a thermoplastic plastic screening device for waste plastics after processing. It has the advantage of quickly retrieval of waste plastics floating on the water surface, solving the problem that after processing waste plastics, screening is required to separate waste plastics of different materials. Typically, waste plastics are put into a flotation tank and mixed with specific flotation reagents, allowing some waste plastics to float on the water surface while other plastics or impurities remain at the bottom of the flotation tank. Then, the floating waste plastics are manually retrieved, which results in high labor intensity for workers and generally low flotation retrieval efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a thermoplastic plastic screening device after waste plastic processing, including a flotation tank, an installation bracket provided on the back of the flotation tank, a drainage pipe provided in the flotation tank, and a retrieval structure and a control structure provided on the installation bracket;

[0006] The salvage structure includes a mounting frame fixedly installed on the front of the mounting bracket. A connecting plate with one end extending through and to the outside is slidably installed inside the mounting frame. A connector is provided at the bottom of the connecting plate. A net component for salvaging the floated waste plastic is fixedly connected to the bottom of the connector. A limiting component for restricting the vertical movement trajectory and distance of the connector is provided on the connecting plate. A lifting component for controlling the vertical movement of the connector is fixedly installed on one side of the connecting plate.

[0007] Furthermore, the control structure includes a threaded rod rotatably mounted between the left and right sides of the inner cavity of the mounting frame. One end of the threaded rod passes through a connecting plate, and the connecting plate is threadedly connected to the outer surface of the threaded rod. An asynchronous motor is fixedly mounted on the top of the mounting frame, and a transmission component for driving the threaded rod to rotate is provided on one side of the asynchronous motor.

[0008] Furthermore, the mounting bracket is fixedly installed on the back of the flotation cell, the drainage pipe is fixedly connected to the flotation cell, and an inlet pipe is fixedly installed on the flotation cell.

[0009] Furthermore, the net component includes a metal frame and a net bag, the net bag being fixedly connected to the inner wall of the metal frame, and the metal frame being fixedly connected to a connector.

[0010] Furthermore, the lifting component includes a mounting platform and an electric push rod. The mounting platform is fixedly connected to one side of the connecting plate, the electric push rod is fixedly mounted on the mounting platform, and the telescopic end of the electric push rod is fixedly connected to the net-catching component.

[0011] Furthermore, the limiting component includes a guide rod and a limiting plate. The limiting plate is fixedly installed at the top of the guide rod, and the guide rod is fixedly installed at the top of the connector. One end of the guide rod passes through the connecting plate, and the connecting plate is slidably connected to the outer surface of the guide rod. A pressure sensor electrically connected to the electric push rod is fixedly installed at the bottom of the limiting plate.

[0012] Furthermore, the transmission component includes a belt and two pulleys, with the two pulleys respectively fixedly mounted on the outer surfaces of the asynchronous motor output shaft and the threaded rod, and the belt drive is mounted on the two pulleys.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This waste plastic processing thermoplastic plastic screening device, through the inclusion of a retrieval structure and a control structure, achieves automatic retrieval of floating waste plastics. It utilizes an electric push rod in the lifting component to control the sinking of the retrieval net component into the flotation tank. Then, an asynchronous motor drives a threaded rod to rotate, causing the connecting plate threaded to the outside of the rod to move the retrieval net component to one side via a connector. This allows the net in the retrieval net component to collect the floating waste plastics and adhere them to the inner wall of the flotation tank. The electric push rod is then controlled to retract, causing the float to lift the collected waste plastics. This achieves automatic retrieval of floating waste plastics, reducing the labor intensity of workers and further improving retrieval efficiency, thus enhancing the practicality of the waste plastic processing thermoplastic plastic screening device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 1 Enlarged view of point A in the image;

[0017] Figure 3 This is a three-dimensional schematic diagram of the structural mounting frame, connecting plate, and limiting components of this utility model.

[0018] In the diagram: 1. Flotation cell; 2. Mounting bracket; 3. Drainage pipe; 41. Mounting frame; 42. Connecting plate; 43. Connecting piece; 44. Net scooping component; 45. Restricting component; 46. Lifting component; 47. Threaded rod; 48. Asynchronous motor; 49. Transmission component. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1 to 3 The thermoplastic screening device for waste plastics processed in this embodiment includes a flotation tank 1, an installation bracket 2 is provided on the back of the flotation tank 1, a drainage pipe 3 is provided in the flotation tank 1, a retrieval structure and a control structure are provided on the installation bracket 2, the installation bracket 2 is fixedly installed on the back of the flotation tank 1, the drainage pipe 3 is fixedly connected to the flotation tank 1, and a water inlet pipe is fixedly installed on the flotation tank 1.

[0021] In this embodiment, the salvage structure includes a mounting frame 41 fixedly installed on the front of the mounting bracket 2. A connecting plate 42 is slidably installed inside the mounting frame 41, with one end extending through and to the outside. A connector 43 is provided at the bottom of the connecting plate 42. A net component 44 for salvaging the floated waste plastic is fixedly connected to the bottom of the connector 43. The net component 44 includes a metal frame and a net bag. The net bag is fixedly connected to the inner wall of the metal frame, and the metal frame is fixedly connected to the connector 43, which facilitates the collection of floating waste plastic using the net bag. A limiting component 45 is provided on the connecting plate 42 to limit the vertical movement trajectory and distance of the connector 43. A lifting component 46 for controlling the vertical movement of the connector 43 is fixedly installed on one side of the connecting plate 42. The lifting component 46 includes a mounting platform and an electric push rod. The mounting platform is fixedly connected to one side of the connecting plate 42, and the electric push rod is fixedly installed on the mounting platform. The telescopic end of the electric push rod is fixedly connected to the net component 44, which facilitates the telescopic movement of the electric push rod and the net bag through the connector 43.

[0022] The limiting component 45 includes a guide rod and a limiting plate. The limiting plate is fixedly installed at the top of the guide rod, and the guide rod is fixedly installed at the top of the connector 43. One end of the guide rod passes through the connecting plate 42, and the connecting plate 42 is slidably connected to the outer surface of the guide rod. A pressure sensor electrically connected to the electric push rod is fixedly installed at the bottom of the limiting plate, which facilitates the control of the electric push rod to bring the net bag to a suitable height and then stop it in time.

[0023] Using the above technical solution, the electric push rod in the lifting component 46 is activated. The electric push rod controls the bottom of the net-collecting component 44 of the connector 43 to insert into the flotation cell 1 until the pressure sensor in the limiting component 45 contacts the connecting plate 42 and triggers the electric push rod to shut down. Then, the control structure drives the connecting plate 42 to move, so that the moving connecting plate 42 drives the net-collecting component 44 to move to one side through the connector 43. This allows the net bag in the net-collecting component 44 to collect the floating waste plastic until the metal frame is against the inner wall of the flotation cell 1. Then, the electric push rod in the lifting component 46 is activated to retract, thereby retrieval the net bag and the collected waste plastic.

[0024] In this embodiment, the control structure includes a threaded rod 47 rotatably mounted between the left and right sides of the inner cavity of the mounting frame 41. One end of the threaded rod 47 passes through the connecting plate 42, and the connecting plate 42 is threadedly connected to the outer surface of the threaded rod 47, so that rotating the threaded rod 47 can control the left and right movement of the connecting plate 42. An asynchronous motor 48 is fixedly mounted on the top of the mounting frame 41. A transmission component 49 for driving the threaded rod 47 to rotate is provided on one side of the asynchronous motor 48. The transmission component 49 includes a belt and two pulleys. The two pulleys are fixedly mounted on the output shaft of the asynchronous motor 48 and the outer surface of the threaded rod 47, respectively. The belt drive is mounted on the two pulleys, so that the rotating output shaft can drive the threaded rod 47 to rotate using the belt in the transmission component 49.

[0025] By adopting the above technical solution, the asynchronous motor 48 at the top of the mounting frame 41 is activated, which drives the output shaft to rotate. The rotating output shaft drives the threaded rod 47 to rotate via the belt in the transmission component 49. The connecting plate 42 with the threaded connection on the outer surface of the threaded rod 47 drives the net-catching component 44 to move to one side through the connecting piece 43.

[0026] The working principle of the above embodiments is as follows:

[0027] When using this waste plastic processing thermoplastic plastic screening device, the electric push rod in the lifting component 46 is activated. The electric push rod controls the bottom of the connecting piece 43 to insert the net-collecting component 44 into the flotation cell 1 until the pressure sensor in the limiting component 45 contacts the connecting plate 42 and triggers the electric push rod to shut off. Then, the asynchronous motor 48 at the top of the mounting frame 41 is activated, causing the asynchronous motor 48 to drive the output shaft to rotate. The rotating output shaft drives the threaded rod 47 to rotate via the belt in the transmission component 49. The connecting plate 42, which is threaded on the outer surface of the threaded rod 47, moves the net-collecting component 44 to one side through the connecting piece 43. This allows the net in the net-collecting component 44 to collect the floating waste plastic until the metal frame is against the inner wall of the flotation cell 1. Then, the electric push rod in the lifting component 46 is activated to retract, thereby retrieval the net and the collected waste plastic.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thermoplastic screening device for waste plastics after processing, comprising a flotation tank (1), characterized in that: The flotation tank (1) is provided with an installation bracket (2) on the back side, and a drainage pipe (3) is provided in the flotation tank (1). The installation bracket (2) is provided with a retrieval structure and a control structure. The salvage structure includes a mounting frame (41) fixedly installed on the front of the mounting bracket (2). A connecting plate (42) with one end penetrating through and extending to the outside is slidably installed inside the mounting frame (41). A connector (43) is provided at the bottom of the connecting plate (42). A net component (44) for salvaging the waste plastics floated out is fixedly connected to the bottom of the connector (43). A limiting component (45) for limiting the vertical movement trajectory and distance of the connector (43) is provided on the connecting plate (42). A lifting component (46) for controlling the vertical movement of the connector (43) is fixedly installed on one side of the connecting plate (42).

2. The thermoplastic screening device for waste plastics after processing, as described in claim 1, is characterized in that: The control structure includes a threaded rod (47) rotatably mounted between the left and right sides of the inner cavity of the mounting frame (41). One end of the threaded rod (47) passes through the connecting plate (42), and the connecting plate (42) is threadedly connected to the outer surface of the threaded rod (47). An asynchronous motor (48) is fixedly mounted on the top of the mounting frame (41), and a transmission component (49) for driving the threaded rod (47) to rotate is provided on one side of the asynchronous motor (48).

3. The thermoplastic screening device for waste plastics after processing, as described in claim 1, is characterized in that: The mounting bracket (2) is fixedly installed on the back of the flotation tank (1), the drainage pipe (3) is fixedly connected to the flotation tank (1), and the water inlet pipe is fixedly installed on the flotation tank (1).

4. The thermoplastic screening device for waste plastics after processing, as described in claim 1, is characterized in that: The net component (44) includes a metal frame and a net bag, the net bag being fixedly connected to the inner wall of the metal frame, and the metal frame being fixedly connected to the connector (43).

5. The thermoplastic screening device for waste plastics after processing, as described in claim 1, is characterized in that: The lifting component (46) includes a mounting platform and an electric push rod. The mounting platform is fixedly connected to one side of the connecting plate (42). The electric push rod is fixedly installed on the mounting platform. The telescopic end of the electric push rod is fixedly connected to the net-catching component (44).

6. The thermoplastic screening device for waste plastics after processing, as described in claim 5, is characterized in that: The limiting component (45) includes a guide rod and a limiting plate. The limiting plate is fixedly installed on the top of the guide rod. The guide rod is fixedly installed on the top of the connector (43). One end of the guide rod passes through the connecting plate (42) and the connecting plate (42) is slidably connected to the outer surface of the guide rod. A pressure sensor electrically connected to the electric push rod is fixedly installed at the bottom of the limiting plate.

7. The thermoplastic screening device for waste plastics after processing, as described in claim 2, is characterized in that: The transmission component (49) includes a belt and two pulleys. The two pulleys are respectively fixedly installed on the outer surfaces of the output shaft of the asynchronous motor (48) and the threaded rod (47). The belt drive is installed on the two pulleys.

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