Screening device for the production of plastic pellets

Abstract

The utility model provides a screening device for producing plastic pellet raw materials, comprising a base, a vertical frame is fixed on one side of the top of the base, and a screening box is rotatably installed inside the vertical frame through a bearing, the screening box is divided into multiple layers, and a first screen plate with a gap gradually decreasing from top to bottom is fixed inside each layer of the screening box, and the telescopic rod is connected, when the screening box rotates, the telescopic rod will pull the bottom slide seats of the mounting frame on both sides of the feed frame to slide along the vertical frame, and keep them in the same straight line with the feed port at the top of the screening box, and at the same time, the corrugated channel cooperates with telescoping or elongating to keep the connection between the feed frame and the screening box, so that continuous feeding can be carried out. Compared with the prior art, multi-stage screening is performed on the plastic pellet raw materials to make their separation more thorough. In addition, under the action of the conveying component, the feed frame can continuously convey raw materials to the inside of the screening box, thereby keeping the screening continuous and improving the screening efficiency of the plastic pellet raw materials.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic pellet screening, in particular to a screening device for the production of plastic pellet raw materials. Background Art

[0002] Plastic raw materials are mainly divided into thermoplastic plastics and thermosetting plastics according to the molecular structure of synthetic resins: Thermoplastic plastics refer to plastics that remain plastic after repeated heating, and thermosetting plastics mainly refer to thermoplastics made from synthetic resins that are heated and hardened, such as some phenolic plastics and amino plastics. The current plastic pellet production raw material screening equipment can only screen by replacing filters of different calibers, and cannot perform multi-stage screening at the same time, resulting in cumbersome screening steps and low efficiency.

[0003] The patent with announcement number CN213227132U proposes a multiple screening and grading device for raw materials for plastic pellet production. The driving motor drives the threaded rod to rotate, thereby driving the connecting rod to move back and forth through the threaded sleeve, and under the connecting action of the connecting rod, all the circular plates move back and forth at the same time. The left end of the circular plate slides along the slide groove through the mounting plate and the slider, so that the raw materials on the circular plate fall down in sequence according to the filter hole size of the filter screen, thereby realizing multi-stage screening of the raw materials. After the screening is completed, the T-shaped limit plate is taken out through the pick-and-place groove, so that the drop groove is connected with the square groove on the surface of the longitudinal fixed plate, and then the electric push rod is connected to the external power supply, so that the electric push rod pushes the push plate, so that the raw materials on the surface of the filter screen pass through the drop groove and the square groove respectively and fall into the storage box along the guide pipe respectively.

[0004] The above scheme can quickly screen the plastic pellet raw materials through a multi-stage screening method, thereby improving the screening efficiency. However, the defect of this scheme is that screening and feeding cannot be carried out at the same time. The material needs to be fed first, and the next group of screening can only be carried out after the screening and feeding are completed. Therefore, the screening efficiency is not high. In addition, during the screening shaking process, some particles that have not been completely screened will also be sent out from the drop chute, thereby affecting the screening results. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a screening device for the production of plastic pellet raw materials to solve the problems raised in the above-mentioned background technology. The utility model has a novel structure. The screening box is driven to swing back and forth by a driving motor. The plastic pellet raw materials are screened in multiple stages through the cooperation of the first screen plate and the second screen plate, so that the separation is more thorough. In addition, under the action of the conveying component, the feed frame can continuously convey the raw materials into the screening box, thereby maintaining the continuous screening and improving the screening efficiency of the plastic pellet raw materials.

[0006] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a screening device for the production of plastic pellet raw materials, including a base, a vertical frame is fixed on one side of the top of the base, and a screening box is rotatably installed inside the vertical frame through a bearing, the screening box is divided into multiple layers, and a first screen plate with a gap gradually decreasing from top to bottom is fixed inside each layer of the screening box, a conveying component for intermittent feeding is arranged on the top of the screening box, and the conveying component includes a feed frame, a corrugated channel is fixed on the bottom of the feed frame, and the bottom of the corrugated channel is connected to the top of the screening box, a delivery component is arranged on one side of the screening box, and the delivery component includes a second screen plate, and a second screen plate is arranged on the outside of the screening box at a position corresponding to the outlet of each layer, and the gap of the second screen plate gradually decreases from top to bottom.

[0007] Furthermore, a multi-layer collecting frame is fixedly installed at the top of the other side of the base at a position corresponding to the delivery component, and the collecting frame corresponds to the position of the second screen plate after the screening box rotates.

[0008] Furthermore, the conveying assembly also includes a mounting frame, the mounting frames are fixed on both sides of the feed frame, and the mounting frames are installed on the top of the vertical frame. A cross rotating plate is rotatably installed inside the feed frame through bearings and a motor.

[0009] Furthermore, a slide is fixed at the bottom of the mounting frame, and the slide slides along the top of the vertical frame. Telescopic rods are installed on both sides of the feed frame, and the extended ends of the telescopic rods are rotatably connected to the top of the screening box through a rotating shaft.

[0010] Furthermore, a driving motor is fixed on the outer side of the vertical frame corresponding to the rotation installation position of the screening box, and the output end of the driving motor is fixed to the screening box.

[0011] Furthermore, the delivery assembly also includes a conveying frame, the conveying frame is fixed on the outer wall of the outlet side of the screening box, and the second screen plate is fixed inside the conveying frame.

[0012] Furthermore, a baffle is slidably inserted inside each layer outlet of the screening box, and connecting frames are fixed on both sides of the baffle. The top of the connecting frame slides out of the screening box. Electric push rods are fixed on the outer walls of both sides of the screening box, and the extended ends of the electric push rods are fixed to the top of the connecting frame.

[0013] Beneficial effects of the utility model: The screening device for producing plastic pellet raw materials of the utility model comprises a base; a vertical frame; a collecting frame; a screening box; a driving motor; a first screen plate; a conveying assembly; a feeding frame; a rotating plate; a corrugated channel; a mounting frame; a sliding seat; a telescopic rod; a sending assembly; a conveying frame; a second screen plate; a baffle; an electric push rod; a connecting frame;

[0014] 1. The utility model drives the connecting frame to move downward by an electric push rod, and the baffle blocks the outlet end of each layer of the screening box to prevent particles from escaping. The baffle can also be opened to form a smaller channel by the electric push rod, so that the raw materials of each layer will be quantitatively sent out from the screening box to the second screen plate, and the second screen plate will be used for secondary screening. Since the amount sent out each time is small, the second screen plate can send the particles that have not been completely screened out to the corresponding layer.

[0015] 2. The utility model is connected by a telescopic rod. When the screening box rotates, the telescopic rod will pull the bottom slides of the mounting frames on both sides of the feed frame to slide along the vertical frames, keeping them in the same straight line with the feed port at the top of the screening box. At the same time, the corrugated channel cooperates with telescoping or elongating to keep the connection between the feed frame and the screening box, so that continuous feeding can be achieved.

[0016] 3. Compared with the prior art, the utility model performs multi-stage screening on the plastic pellet raw materials to make their separation more thorough. In addition, under the action of the conveying component, the feed frame can continuously convey the raw materials into the screening box, thereby maintaining the continuous screening and improving the screening efficiency of the plastic pellet raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the screening device for producing plastic pellet raw materials of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the delivery component of the screening device for producing plastic pellet raw materials of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the conveying component of the screening device for producing plastic pellet raw materials of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the screening box of the screening device for producing plastic granule raw materials of the utility model.

[0021] In the figure: 1. base; 11. vertical frame; 12. collecting frame; 2. screening box; 21. driving motor; 22. first sieve plate; 3. conveying assembly; 31. feeding frame; 32. rotating plate; 33. corrugated channel; 34. mounting frame; 35. sliding seat; 36. telescopic rod; 4. sending assembly; 41. conveying frame; 42. second sieve plate; 43. baffle; 44. electric push rod; 45. connecting frame. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figures 1 to 4The utility model provides a technical solution: a screening device for producing plastic pellet raw materials, comprising a base 1, a vertical frame 11 is fixed to one side of the top of the base 1, and a screening box 2 is rotatably installed inside the vertical frame 11 through a bearing, the screening box 2 is divided into multiple layers, and each layer of the screening box 2 is fixed with a first screen plate 22 whose gap gradually decreases from top to bottom, the top of the screening box 2 is provided with an intermittent feeding conveying component 3, and the conveying component 3 includes a feeding frame 31, and a corrugated channel 33 is fixed to the bottom of the feeding frame 31, and the corrugated channel 33 The bottom is connected with the top of the screening box 2, a delivery component 4 is provided on one side of the screening box 2, and the delivery component 4 includes a second sieve plate 42, and a second sieve plate 42 is provided at the position corresponding to the outlet of each layer on the outside of the screening box 2, and the gap of the second sieve plate 42 gradually decreases from top to bottom. When the device is used, the plastic pellet raw material is sent into the screening box 2 by the conveying component 3, and the screening box 2 swings back and forth to screen particles of different sizes into each layer, and then sent out through the delivery component 4, and collected and sorted by the collecting frame 12, so as to improve the efficiency of screening the plastic pellet raw material.

[0024] In this embodiment, the conveying assembly 3 also includes a mounting frame 34, mounting frames 34 are fixed on both sides of the feed frame 31, and the mounting frames 34 are installed on the top of the vertical frame 11, and a cross rotating plate 32 is rotatably installed inside the feed frame 31 through bearings and motors, and a slide seat 35 is fixed at the bottom of the mounting frame 34, and the slide seat 35 slides along the top of the vertical frame 11, and telescopic rods 36 are installed on both sides of the feed frame 31, and the extended end of the telescopic rod 36 is rotatably connected to the top of the screening box 2 through a rotating shaft. The rotating plate 32 in the feed frame 31 is a common device for adjusting the feeding speed, which intermittently conveys raw materials into the screening frame. Through the connection of the telescopic rod 36, when the screening box 2 rotates, the telescopic rod 36 will pull the bottom slide seats 35 of the mounting frames 34 on both sides of the feed frame 31 to slide on the vertical frame 11, keeping it in the same straight line with the feeding port at the top of the screening box 2, and at the same time, the corrugated channel 33 cooperates with telescoping or elongating to keep the connection between the feed frame 31 and the screening box 2, so as to continuously feed the material.

[0025] In this embodiment, a multi-layer collecting frame 12 is fixedly installed at the top of the other side of the base 1 corresponding to the position of the delivery component 4, and the collecting frame 12 corresponds to the position of the second sieve plate 42 after the screening box 2 rotates, and a driving motor 21 is fixed to the outer side of the rotating installation position of the vertical frame 11 corresponding to the screening box 2, and the output end of the driving motor 21 is fixed to the screening box 2, and the screening box 2 is driven by the driving motor 21 to swing back and forth, and the swinging can speed up the separation of the raw materials through the first sieve plate 22. At the same time, the arc of the swing will not exceed the position of the collecting frame 12, that is, when one side of the second sieve plate 42 rotates to the lowest point, each group of second sieve plates 42 is just located at the top of the collecting frame 12, thereby completing the delivery of the raw materials.

[0026] In this embodiment, the delivery component 4 also includes a conveying frame 41, a conveying frame 41 is fixed on the outer wall of the outlet side of the screening box 2, and the second screen plate 42 is fixed inside the conveying frame 41, a baffle 43 is slidably inserted inside each layer of the outlet of the screening box 2, and connecting frames 45 are fixed on both sides of the baffle 43, and the top of the connecting frame 45 slides out of the screening box 2, and electric push rods 44 are fixed on the outer walls of both sides of the screening box 2, and the extended ends of the electric push rods 44 are fixed to the top of the connecting frame 45. When the raw materials are shaken and screened inside the screening box 2, the electric push rods The rod 44 drives the connecting frame 45 to move downward, and the baffle 43 blocks the outlet end of each layer of the screening box 2 to prevent particles from escaping. After a period of time, the electric push rod 44 opens a smaller channel of the baffle 43, so that the raw materials of each layer are quantitatively sent out from the screening box 2 to the second screen plate 42, and secondary screening is performed by the second screen plate 42. Since the amount sent out each time is small, the second screen plate 42 can send the particles that have not been completely screened out to the corresponding layer, and then as the screening box 2 swings, the raw materials on the second screen plate 42 are sent into the corresponding collection frame 12.

[0027] When the device is in use, the plastic pellet raw material is fed into the screening box 2 by the conveying assembly 3, and the screening box 2 swings back and forth to screen particles of different sizes into each layer. When the screening box 2 rotates, the telescopic rod 36 will pull the bottom slide 35 of the mounting frame 34 on both sides of the feed frame 31 to slide along the vertical frame 11 to keep it in the same straight line with the top feed port of the screening box 2. At the same time, the corrugated channel 33 cooperates with telescoping or elongating to keep the connection between the feed frame 31 and the screening box 2, so that continuous feeding can be achieved. The electric push rod 44 opens a smaller channel with the baffle 43, so that the raw material of each layer will be quantitatively sent from the screening box 2 to the second screen plate 42, and the second screen plate 42 will be used for secondary screening. Since the amount sent out each time is small, the second screen plate 42 can send the particles that have not been completely screened into the corresponding layer, and then with the swing of the screening box 2, the raw material on the second screen plate 42 is sent into the corresponding collection frame 12, thereby improving the efficiency of screening the plastic pellet raw materials.

[0028] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A screening device for producing plastic pellet raw materials, comprising a base (1), characterized in that: A vertical frame (11) is fixed to one side of the top of the base (1), and a screening box (2) is rotatably mounted inside the vertical frame (11) via a bearing. The screening box (2) is divided into multiple layers, and a first screen plate (22) with a gap gradually decreasing from top to bottom is fixed inside each layer of the screening box (2). A conveying assembly (3) for intermittent feeding is arranged on the top of the screening box (2), and the conveying assembly (3) includes a feeding frame (31). A corrugated channel (33) is fixed to the bottom of the feeding frame (31), and the bottom of the corrugated channel (33) is connected to the top of the screening box (2). A delivery assembly (4) is arranged on one side of the screening box (2), and the delivery assembly (4) includes a second screen plate (42). A second screen plate (42) is arranged on the outside of the screening box (2) at a position corresponding to the outlet of each layer, and the gap of the second screen plate (42) gradually decreases from top to bottom.

2. The screening device for producing plastic pellet raw materials according to claim 1, characterized in that: A multi-layer collecting frame (12) is fixedly installed at the top of the other side of the base (1) at a position corresponding to the delivery assembly (4), and the collecting frame (12) corresponds to the position of the second sieve plate (42) after the screening box (2) rotates.

3. The screening device for producing plastic pellet raw materials according to claim 1, characterized in that: The conveying assembly (3) also includes a mounting frame (34), the mounting frames (34) are fixed on both sides of the feed frame (31), and the mounting frames (34) are installed on the top of the vertical frame (11), and a cross-turn plate (32) is rotatably installed inside the feed frame (31) through bearings and a motor.

4. The screening device for producing plastic pellet raw materials according to claim 3, characterized in that: A slide seat (35) is fixed at the bottom of the mounting frame (34), and the slide seat (35) slides along the top of the vertical frame (11). Telescopic rods (36) are installed on both sides of the feed frame (31), and the extended ends of the telescopic rods (36) are rotatably connected to the top of the screening box (2) through a rotating shaft.

5. The screening device for producing plastic pellet raw materials according to claim 1, characterized in that: A driving motor (21) is fixed on the outer side of the vertical frame (11) corresponding to the rotation installation position of the screening box (2), and the output end of the driving motor (21) is fixed to the screening box (2).

6. The screening device for producing plastic pellet raw materials according to claim 1, characterized in that: The delivery assembly (4) further comprises a conveying frame (41), the conveying frame (41) being fixed on the outer wall of the outlet side of the screening box (2), and the second screen plate (42) being fixed inside the conveying frame (41).

7. The screening device for producing plastic pellet raw materials according to claim 6, characterized in that: A baffle (43) is slidably inserted inside each layer outlet of the screening box (2), and connecting frames (45) are fixed on both sides of the baffle (43). The top of the connecting frame (45) slides out of the screening box (2). Electric push rods (44) are fixed on the outer walls of both sides of the screening box (2), and the extended ends of the electric push rods (44) are fixed to the tops of the connecting frames (45).

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