Vibrating screening device for plastic granulation

Abstract

The utility model relates to a vibration screening device for plastic granulation, which comprises a shell, a mounting cavity arranged in the shell, an openable door plate arranged on the shell, a frame arranged in the mounting cavity, a connecting frame used for connecting the frame, a base arranged in the mounting cavity, a connecting part arranged on the outer wall of the connecting frame, and a spring connected between the connecting part and the base. A vibrating mechanism is arranged below the connecting frame, a supporting part is arranged on the inner wall of the connecting frame, the frame and the supporting part form detachable connection, the frame is detachably connected with a sieve plate, a feeding hopper communicated with the mounting cavity is arranged above the shell, a guide channel is arranged in the feeding hopper, and the guide channel is spiral and extends downwards; the two ends of the guide channel serve as a feeding end and a discharging end respectively, a guide pipe is arranged above the guide channel, and the guide pipe forms a material opening in the end face of the feeding hopper. The plastic particle screening device has the following advantages and effects that plastic particles to be screened can be sequentially fed into the screening plate, so that the plastic particles are prevented from being blocked in the feeding process.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic granulation, in particular to a vibration screening device for plastic granulation. Background Art

[0002] Plastic granulation is a process of reprocessing recycled plastics into usable plastic particles through steps such as crushing, melting, extrusion, cooling, and pelletizing, thereby reducing the use of raw materials and improving resource utilization. In the pelletizing process, the extruded plastic strips are generally cut by a cylinder to drive the blade to retract. However, in the process of driving the blade to retract, the blade's retraction frequency cannot be guaranteed to be the same, resulting in inconsistent specifications of the cut plastic particles. Therefore, in order to facilitate classification and use, plastic particles of different sizes need to be screened.

[0003] For example, the Chinese patent document with the announcement number CN215039320U discloses a vibrating screening device for plastic extrusion granulation. The vibrating screening device for plastic extrusion granulation comprises a housing, a sieve plate, a vibration system, a feed assembly, and a cover plate, wherein the cover plate covers the housing, the feed assembly is installed on both sides of the cover plate, two sieve plates are installed in sequence from top to bottom inside the housing, and the vibration system is installed in the housing and provides power for the two sieve plates.

[0004] It can be seen from the above disclosed contents that in the above technical solution, by deforming the bottom of each screen plate downwardly into a concave shape, the materials can be separated quickly and timely according to the preset aperture, thereby improving the screening efficiency.

[0005] However, the inventors discovered during the process of implementing the above technical solution that, in the above technical solution, the plastic particles to be screened are transported to the screen plate by pouring into a hopper, but the hopper has a simple structure. When a large amount of plastic particles to be screened are poured into the hopper at the same time, it is very easy to cause blockage at the discharge port of the hopper, thereby affecting the overall convenience of use. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a vibrating screening device for plastic granulation, which can sequentially feed the plastic particles to be screened into the screen plate to prevent the plastic particles from being blocked during the feeding process.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vibrating screening device for plastic granulation, comprising a shell, a mounting cavity is provided in the shell, an openable door panel is provided in the shell, a frame and a connecting frame for connecting the frame are provided in the mounting cavity, a base is fixed to the inner wall of the shell, a protruding connecting portion is provided on the outer wall of the connecting frame, the connecting portion corresponds to the base, a spring is connected between the connecting portion and the base, a vibration mechanism is provided under the connecting frame, the vibration mechanism is used to drive the connecting frame to vibrate, and the inner wall of the connecting frame is provided with The support part is detachably connected to the frame, the frame is detachably connected with a sieve plate, a trough body for accommodating plastic particles is formed between the sieve plate and the frame, a feed hopper connected to the mounting cavity is provided above the shell, a guide channel is provided in the feed hopper, the guide channel is spiral and extends downward, the two ends of the guide channel serve as a feed end and a discharge end respectively, a guide tube is provided above the guide channel, the guide tube forms a material port on the end face of the feed hopper, the guide tube is vertically opposite to the feed end, and the discharge end is vertically opposite to the trough body.

[0008] The utility model is further configured as follows: the vibration mechanism includes a rotating shaft, the rotating shaft is rotatably connected to the inner wall of the shell, a motor connected to the rotating shaft is provided outside the shell, the motor is used to drive the rotating shaft to rotate, a cam is fixedly mounted on the outer periphery of the rotating shaft, and the cam can abut against the bottom of the connecting frame.

[0009] The utility model is further configured as follows: a protruding guide block is provided on the support portion, and a guide groove matched with the guide block is provided on the frame, and the guide block can be coupled with the guide groove to form a sliding fit between the two.

[0010] The utility model is further configured as follows: the screen plate includes an outer frame and a filter screen connected to the inner side of the outer frame, a sliding portion is provided on the outer periphery of the outer frame, a sliding groove matched with the sliding portion is provided on the inner side of the frame, an opening is provided on one side surface of the frame, the opening is connected to the sliding groove, the sliding portion slides into the sliding groove through the opening, and a sliding fit between the two is formed.

[0011] The utility model is further configured as follows: the support portion is located on both sides of the guide block and is respectively provided with first threaded holes.

[0012] The utility model is further configured as follows: the frame is provided with an extension portion extending outward on one side of the opening, and the extension portion is provided with a second threaded hole.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] Since a spiral guide channel is provided in the feed hopper, after the plastic particles to be screened are poured into the feed hopper, the plastic particles can slide downward along the guide channel under the action of gravity, and the guide channel enables the plastic particles to slide out from the discharge end to the trough formed between the lower screen plate and the frame in sequence, thereby preventing a large number of plastic particles from entering the feed hopper at the same time and causing blockage in the feed hopper. Therefore, the technical problem in the prior art that when a large number of plastic particles to be screened are poured into the hopper at the same time, it is very easy to cause blockage at the discharge port of the hopper, and the guide pipe is provided when the plastic particles are poured into the feed hopper. When the sieve is filled with plastic, the guide tube can play a guiding role to ensure that the plastic particles can be accurately fed into the guide channel. In addition, the setting of the guide tube can reduce the number of plastic particles poured into the guide channel at the same time to prevent the plastic particles from clogging the guide channel. In actual use, there is a vacuum period when the sieve plate screens the plastic particles. That is, when a large amount of plastic particles are fed into the sieve plate, the plastic particles located above will be blocked by the plastic particles below and cannot be screened by the sieve plate. Therefore, even if the guide tube is set to slow down the feeding speed of the plastic particles, it will not affect the overall screening efficiency of the plastic particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the specific connection structure between the frame and the screen plate in the utility model. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] like Figures 1 to 3 As shown, the utility model discloses a vibrating screening device for plastic granulation, including a shell 1, a mounting cavity 2 is arranged in the shell 1, and an openable door panel 3 is arranged in the shell 1. By opening the door panel 3, it is convenient to discharge plastic particles at a sieve plate 8 in the mounting cavity 2. A frame 4 and a connecting frame 5 for connecting the frame 4 are arranged in the mounting cavity 2. A base 6 is fixed to the inner wall of the shell 1, and a protruding connecting portion 51 is arranged on the outer wall of the connecting frame 5. The connecting portion 51 corresponds to the base 6, and a spring 7 is connected between the connecting portion 51 and the base 6. A vibration mechanism is arranged below the connecting frame 5. The mechanism is used to drive the connecting frame 5 to vibrate. The inner wall of the connecting frame 5 is provided with a support portion 52. The frame 4 and the support portion 52 are detachably connected. The frame 4 is detachably connected with a screen plate 8. A trough body for accommodating plastic particles is formed between the screen plate 8 and the frame 4. A feed hopper 9 connected to the installation cavity 2 is provided above the shell 1. A guide channel 91 is provided in the feed hopper 9. The guide channel 91 is spiral and extends downward. The two ends of the guide channel 91 serve as a feed end and a discharge end respectively. A guide pipe 92 is provided above the guide channel 91. The guide pipe 92 forms a material port on the end face of the feed hopper 9. The guide The guide pipe 92 is vertically opposite to the feeding end, and the discharging end is vertically opposite to the trough body. After the plastic particles to be screened are poured into the hopper 9, the plastic particles can slide downward along the guide channel 91 under the action of gravity, and the plastic particles can slide out from the discharging end to the trough body formed between the lower sieve plate 8 and the frame 4 in sequence through the guide channel 91, so as to prevent a large number of plastic particles from entering the hopper 9 at the same time and causing the hopper 9 to be blocked. In addition, the guide pipe 92 is provided, and when the plastic particles are poured into the hopper 9, the guide pipe 92 can play a guiding role to ensure that the plastic particles can Accurately feed the plastic particles into the guide channel 91. In addition, the setting of the guide tube 92 can reduce the number of plastic particles poured into the guide channel 91 at the same time to prevent the plastic particles from causing blockage in the guide channel 91. In actual use, there is a vacuum period when the sieve plate 8 screens the plastic particles. That is, when a large amount of plastic particles are fed into the sieve plate 8, the plastic particles located above will be blocked by the plastic particles below and cannot be screened by the sieve plate 8. Therefore, even if the guide tube 92 is set to slow down the feeding speed of the plastic particles, it will not affect the overall screening efficiency of the plastic particles.

[0021] In this embodiment, the specific structure of the vibration mechanism includes a rotating shaft 101, which is rotatably connected to the inner wall of the shell 1. The shell 1 is provided with a motor 102 connected to the rotating shaft 101. The motor 102 is used to drive the rotating shaft 101 to rotate. A cam 103 is fixed to the outer periphery of the rotating shaft 101. The cam 103 can abut against the bottom of the connecting frame 5. After the plastic particles are fed into the groove formed between the sieve plate 8 and the frame 4, the rotating shaft 101 is driven to rotate by the motor 102. Under the rotation of the rotating shaft 101, the cam 103 connected to the rotating shaft 101 can rotate with the rotation. The rotation of the shaft 101 intermittently lifts the connecting frame 5. The spring 7 is stretched during the lifting process of the connecting frame 5. After the cam 103 moves away from the connecting frame 5, the spring 7 can drive the connecting frame 5 to reset. This reciprocating process can make the frame 4 connected to the connecting frame 5 vibrate, thereby realizing the screening of plastic particles in the trough body. Since there are multiple support parts 52, the connecting frame 5 can connect multiple frames 4 in the vertical direction. By connecting sieve plates 8 with different screening accuracies in each frame 4, plastic particles of different particle sizes can be screened and classified.

[0022] In this embodiment, a protruding guide block 53 is provided on the support portion 52, and a guide groove 41 adapted to the guide block 53 is provided on the frame 4. The guide block 53 can be coupled with the guide groove 41 to form a sliding fit between the two. By sliding the guide block 53 in or out of the guide groove 41 of the frame 4, a detachable connection between the frame 4 and the connecting frame 5 can be achieved, so that after the plastic particles are screened and classified, the frame 4 can be removed to facilitate the unloading of the plastic particles in the trough body.

[0023] In this embodiment, the sieve plate 8 includes an outer frame 81 and a filter screen 82 connected to the inner side of the outer frame 81. A sliding portion 811 is provided on the outer periphery of the outer frame 81. A sliding groove 42 matching the sliding portion 811 is provided on the inner side of the frame 4. An opening 43 is provided on the surface of one side of the frame 4. The opening 43 is connected to the sliding groove 42. The sliding portion 811 slides into the sliding groove 42 through the opening 43 and forms a sliding fit between the two. By sliding the sieve plate 8 into or out of the opening 43, the detachable connection between the sieve plate 8 and the frame 4 can be achieved, so that the filter screen 82 with different screening precisions can be replaced according to actual classification needs to meet different classification and screening needs of plastic particles.

[0024] In this embodiment, first threaded holes are further provided on both sides of the support portion 52 located on the guide block 53. After the frame 4 is connected to the connecting frame 5, locking members 200 that can form threaded cooperation with the first threaded holes are screwed into the first threaded holes on both sides respectively, so that the corresponding locking members 200 can limit the frame 4 and prevent sliding between the guide block 53 and the guide groove 41 during long-term vibration, thereby affecting the connection stability between the frame 4 and the connecting frame 5.

[0025] In this embodiment, an outwardly extending extension portion 44 is further provided on one side of the frame 4 located at the opening 43, and the extension portion 44 is provided with a second threaded hole 441. After the sieve plate 8 is connected to the frame 4, a locking member 200 that forms a threaded fit with the second threaded hole 441 is screwed into the second threaded hole 441, so that the sieve plate 8 can be limited by the corresponding locking member 200, thereby preventing sliding between the sliding groove 42 and the sliding portion 811 during long-term vibration, thereby affecting the connection stability of the sieve plate 8 and the frame 4.

[0026] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A vibrating screening device for plastic granulation, characterized in that: The invention comprises a shell, wherein a mounting cavity is arranged in the shell, wherein the shell is provided with an openable door panel, wherein a frame and a connecting frame for connecting the frame are arranged in the mounting cavity, wherein a base is fixed to an inner wall of the shell, wherein a protruding connecting portion is arranged on an outer wall of the connecting frame, wherein the connecting portion corresponds to the base, wherein a spring is connected between the connecting portion and the base, wherein a vibration mechanism is arranged below the connecting frame, wherein the vibration mechanism is used to drive the connecting frame to vibrate, wherein a supporting portion is arranged on the inner wall of the connecting frame, wherein the frame and the supporting portion are detachably connected, wherein a sieve plate is detachably connected to the frame, wherein a trough body for accommodating plastic particles is formed between the sieve plate and the frame, wherein a feeding hopper connected to the mounting cavity is arranged above the shell, wherein a guide channel is arranged in the feeding hopper, wherein the guide channel is spirally shaped and extends downwardly, wherein two ends of the guide channel serve as a feeding end and a discharging end respectively, wherein a guide pipe is arranged above the guide channel, wherein the guide pipe forms a material port on the end face of the feeding hopper, wherein the guide pipe is vertically opposite to the feeding end, and wherein the discharging end is vertically opposite to the trough body.

2. A vibrating screening device for plastic granulation according to claim 1, characterized in that: The vibration mechanism includes a rotating shaft, which is rotatably connected to the inner wall of the shell. A motor connected to the rotating shaft is arranged outside the shell, and the motor is used to drive the rotating shaft to rotate. A cam is fixedly mounted on the outer periphery of the rotating shaft, and the cam can abut against the bottom of the connecting frame.

3. A vibrating screening device for plastic granulation according to claim 1, characterized in that: The support portion is provided with a protruding guide block, and the frame is provided with a guide groove matched with the guide block. The guide block can be coupled with the guide groove to form a sliding fit between the two.

4. A vibrating screening device for plastic granulation according to claim 1, characterized in that: The screen plate includes an outer frame and a filter screen connected to the inner side of the outer frame. A sliding portion is provided on the outer periphery of the outer frame, and a sliding groove matched with the sliding portion is provided on the inner side of the frame. An opening is provided on one side surface of the frame, and the opening is connected to the sliding groove. The sliding portion slides into the sliding groove through the opening, and a sliding fit is formed between the two.

5. A vibrating screening device for plastic granulation according to claim 3, characterized in that: The support portion is provided with first threaded holes on both sides of the guide block.

6. A vibrating screening device for plastic granulation according to claim 4, characterized in that: The frame is provided with an outwardly extending extension portion on one side of the opening, and the extension portion is provided with a second threaded hole.

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