Plastic particle screening device

Abstract

The utility model discloses a plastic particle screening device which comprises a base plate, a movable bottom plate, a lower screening frame, an upper screening frame, an upper driving mechanism and a lower driving mechanism, a vertical supporting plate is arranged in the middle of the rear side of the base plate, and the movable bottom plate is movably supported above the base plate through a supporting assembly. The lower driving mechanism is installed on the supporting plate and drives the movable bottom plate to vibrate relative to the base plate, the lower screening frame is fixed to the movable bottom plate, the upper screening frame is movably supported and fixed over the lower screening frame, and the upper driving mechanism is fixed to the base plate and drives the upper screening frame to freely vibrate relative to the movable bottom plate. And a plurality of filter sieve holes are formed in the bottom of the upper screening frame. According to the plastic particle screening device, the particle size screening process of plastic particles is effectively achieved, the structure is simple, the manufacturing cost is low, and therefore the overall production and machining cost is saved, and practicability is high.

Description

Technical Field

[0001] The utility model relates to a plastic particle screening device, belonging to the technical field of plastic particle processing. Background Art

[0002] Plastic particles are the common name for plastic particles. They are the raw materials for storing, transporting and processing plastics in the form of semi-finished products. Plastics are a type of polymer material. Ethylene, propylene, vinyl chloride, styrene, etc. can be produced from petroleum. Under certain conditions, the molecules of these substances can react with each other to produce compounds with large molecular weights, namely polymers. Before deep processing, plastic particles will be screened for different particle sizes. Only plastic particles with particle sizes that meet the requirements of deep processing will be sent to deep processing equipment for processing and use. However, many current particle size screening equipment is relatively complex and has high production costs, which increases production and processing costs. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a plastic particle screening device which can effectively save production costs.

[0004] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0005] A plastic particle screening device comprises a base plate, a movable bottom plate, a lower screening frame, an upper screening frame, an upper driving mechanism and a lower driving mechanism, wherein an upright supporting plate is provided in the middle of the rear side of the base plate, the movable bottom plate is movably supported above the base plate through a supporting assembly, the lower driving mechanism is mounted on the supporting plate and drives the movable bottom plate to vibrate relative to the base plate, the lower screening frame is fixed on the movable bottom plate, the upper screening frame movably supported and fixed directly above the lower screening frame, the upper driving mechanism is fixed on the base plate and drives the upper screening frame to vibrate freely relative to the movable bottom plate, and a plurality of filtering screen holes are provided at the bottom of the upper screening frame.

[0006] Preferably, an L-shaped support frame is provided on the front middle side of the support plate, and upright support seats are provided on the front side edges of the base plate. The rear end of the movable bottom plate is located on the L-shaped support frame, and rollers are provided on both sides of the front end. A bearing seat is provided at the upper end of the support seat, and the roller end is movably supported and fixed on the bearing seat. The lower driving mechanism drives the rear end of the movable bottom plate to swing up and down, thereby realizing the free up and down vibration process of the movable bottom plate.

[0007] Preferably, the lower driving mechanism is a cylinder, the tail end of the cylinder body of the cylinder is movably connected to the upper front plate surface of the support plate, and the end of the piston rod is movably connected to the upper rear side of the movable bottom plate.

[0008] Preferably, a support rod is provided at the lower end of the upper screening frame, and the upper end of the support rod is movably connected to the middle parts of the two side edges of the upper screening frame.

[0009] Preferably, the upper driving mechanism includes a motor, a turntable, and a connecting rod. The motor is fixed at the rear end of the movable bottom plate and is located on the rear side of the lower screening frame. The turntable is fixed on the rotating shaft of the motor. A connecting rod shaft is provided on the edge of the disk body. One end of the connecting rod is movably connected to the connecting rod shaft, and the other end is movably connected to the rear edge of the upper screening frame.

[0010] Preferably, a discharge pipe is connected to the front edges of the upper screening frame and the lower screening frame, and a switch valve is provided on the discharge pipe.

[0011] Compared with the prior art, the advantages of the utility model are: the plastic particle screening device is easy to operate and use, effectively realizes the particle size screening process of plastic particles, and has a simple structure and low production cost, thereby saving overall production and processing costs, and is therefore highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. 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 work.

[0013] Figure 1 It is a three-dimensional diagram of the utility model;

[0014] Figure 2 It is a side view of the utility model. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model:

[0016] like Figure 1 , Figure 2A plastic particle screening device shown in the figure comprises a base plate 1, a movable base plate 2, a lower screening frame 3, an upper screening frame 4, an upper driving mechanism, and a lower driving mechanism 5. An upright support plate 6 is provided in the middle of the rear side of the base plate. The movable base plate is movably supported above the base plate by a supporting assembly. The lower driving mechanism is installed on the support plate and drives the movable base plate to vibrate relative to the base plate. The lower screening frame is fixed on the movable base plate. The upper screening frame is movably supported and fixed directly above the lower screening frame. The upper driving mechanism is fixed on the base plate and drives the upper screening frame to vibrate freely relative to the movable base plate. A plurality of filtering sieve holes are provided at the bottom of the upper screening frame. The sieve hole diameter is designed according to actual screening needs to meet the screening particle size requirements. In the present embodiment, the upper screening frame and the lower screening frame are both designed as circular frame structures, and the diameter of the upper screening frame is smaller than the diameter of the lower screening frame to prevent the particles in the upper screening frame from leaking out of the outside of the lower screening frame during screening.

[0017] In this embodiment, in order to further facilitate the free up and down swinging of the movable bottom plate relative to the base plate, an L-shaped support frame 7 is provided on the front side of the middle part of the support plate, and upright support seats 8 are provided on the two side edges of the front of the base plate. The rear end of the movable bottom plate is located on the L-shaped support frame, and rollers are provided on both sides of its front end. A bearing seat is provided on the upper end of the support seat, and the roller end is movably supported and fixed on the bearing seat. The lower driving mechanism drives the rear end of the movable bottom plate to swing up and down, thereby realizing the free up and down vibration process of the movable bottom plate. Furthermore, in order to improve the driving stability, the lower driving mechanism is a cylinder, and the tail end of the cylinder body of the cylinder is movably connected to the front side plate surface of the upper end of the support plate, and the end of the piston rod is movably connected to the upper rear side of the movable bottom plate. Therefore, in actual application, the end of the movable bottom plate is driven by the cylinder to swing up and down, thereby realizing the free swinging of the movable bottom plate as a whole with the support seat as the fulcrum, thereby facilitating the vibrating of the plastic particles in the movable bottom plate out of the screening frame.

[0018] In this embodiment, in order to further improve the flexibility of the upper screening frame to swing up and down, a support rod 9 is provided at the lower end of the upper screening frame, and the upper end of the support rod is movably connected to the middle of the two side edges of the upper screening frame. In addition, in this embodiment, in order to improve the driving stability, the upper driving mechanism includes a motor 10, a turntable 11, and a connecting rod 12. The motor is fixed at the rear end of the movable bottom plate and is located at the rear side of the lower screening frame. The turntable is fixed on the rotating shaft of the motor, and a connecting rod shaft 13 is provided at the edge of the disk body. One end of the connecting rod is movably connected to the connecting rod shaft, and the other end is movably connected to the rear side edge of the upper screening frame. Therefore, in the actual driving process, by rotating the motor and further driving the connecting rod to swing, the upper screening frame is driven to swing up and down with the support rod as the fulcrum, thereby realizing the vibration process of the upper screening frame, and then facilitating the screening process of the upper screening frame, and leaking the particles with smaller particle sizes into the lower screening frame at the bottom, thereby improving the screening effect and efficiency.

[0019] In this embodiment, in order to further facilitate the discharge, the front edges of the upper screening frame and the lower screening frame are connected with a discharge pipe 14, and a switch valve 15 is provided on the discharge pipe.

[0020] In actual application, the plastic particles to be screened are fed into the upper screening frame, and then the motor is started to rotate, and the connecting rod is driven to push and pull the upper screening frame to swing together, so that the upper screening frame can realize the vibration process, and then the plastic particles smaller than the aperture of the screening hole are screened and leaked into the lower screening frame. After the screening is completed, the switch valve on the discharge pipe on the front side of the upper screening frame and the lower screening frame is opened, and then the control cylinder movement is started, so that the plastic particles in the upper screening frame are discharged and discharged through the corresponding discharge pipe under the action of vibration, and the lower screening frame is driven by the cylinder to vibrate and drop the large-size plastic particles therein through the corresponding discharge pipe, thereby completing the overall screening and discharging process of the plastic particles, which is convenient, fast and highly practical.

[0021] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A plastic particle screening device, characterized in that: It includes a base plate, a movable bottom plate, a lower screening frame, an upper screening frame, an upper driving mechanism, and a lower driving mechanism. An upright supporting plate is provided in the middle of the rear side of the base plate. The movable bottom plate is movably supported above the base plate through a supporting assembly. The lower driving mechanism is installed on the supporting plate and drives the movable bottom plate to vibrate relative to the base plate. The lower screening frame is fixed on the movable bottom plate. The upper screening frame is movably supported and fixed directly above the lower screening frame. The upper driving mechanism is fixed on the base plate and drives the upper screening frame to vibrate freely relative to the movable bottom plate. A plurality of filtering screen holes are provided at the bottom of the upper screening frame.

2. A plastic particle screening device according to claim 1, characterized in that: An L-shaped support frame is provided on the front side of the middle part of the support plate, and upright support seats are provided on the two side edges of the front part of the base plate. The rear end of the movable bottom plate is located on the L-shaped support frame, and rollers are provided on both sides of its front end. A bearing seat is provided on the upper end of the support seat, and the roller end is movably supported and fixed on the bearing seat. The lower driving mechanism drives the rear end of the movable bottom plate to swing up and down, thereby realizing the free up and down vibration process of the movable bottom plate.

3. A plastic particle screening device according to claim 2, characterized in that: The lower driving mechanism is a cylinder, the tail end of the cylinder body of the cylinder is movably connected to the upper front side plate surface of the support plate, and the end of the piston rod is movably connected to the upper rear side of the movable bottom plate.

4. A plastic particle screening device according to claim 2, characterized in that: A support rod is provided at the lower end of the upper screening frame, and the upper end of the support rod is movably connected to the middle parts of the two side edges of the upper screening frame.

5. A plastic particle screening device according to claim 2, characterized in that: The upper driving mechanism includes a motor, a turntable, and a connecting rod. The motor is fixed at the rear end of the movable bottom plate and is located on the rear side of the lower screening frame. The turntable is fixed on the rotating shaft of the motor. A connecting rod shaft is provided on the edge of the turntable body. One end of the connecting rod is movably connected to the connecting rod shaft, and the other end is movably connected to the rear edge of the upper screening frame.

6. A plastic particle screening device according to claim 2, characterized in that: The front edges of the upper screening frame and the lower screening frame are connected with a discharge pipe, and a switch valve is arranged on the discharge pipe.

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