Electrostatic separation device for crushed plastic granules for blow molding

Abstract

The utility model discloses an electrostatic separation device for plastic crushed aggregates for blow molding, which comprises a drum screen separation assembly and an electrostatic separation assembly, large particles and small particles of plastic crushed particles are separated through the drum screen separation assembly, and dust of the plastic crushed particles is separated from the large particles and the small particles through the electrostatic separation assembly; the drum screen separation assembly comprises a material screening net, the material screening net is in a frustum shape, and the electrostatic separation assembly is arranged in the drum screen separation assembly; the electrostatic separation assembly comprises an anode plate, a corona electrode and a dust induced draft fan, the anode plate and the corona electrode are arranged along the central axis of the drum screen separation assembly, and the anode plate is arranged at the feeding end of the drum screen separation assembly. According to the utility model, dust can be separated from large particles and small particles, and static electricity among the dust, the large particles and the small particles can be fully eliminated.

Description

Technical Field

[0001] The utility model relates to the field of plastic processing, in particular to an electrostatic separation device for crushed plastic particles used for blow molding. Background Art

[0002] The automotive parts field includes many products made by blow molding, such as automotive ventilation pipes, etc. Some blow molding products have relatively low requirements on the quality of raw materials during the production process. The processed recycled pellets can be mixed into the raw materials at a ratio of 40%-70% for production, which is both environmentally friendly and cost-saving. Plastic crushing for blow molding includes large particles (diameter greater than 2.5mm), small particles (diameter between 0.01mm and 2.5mm), powder (diameter between 0.001mm and 0.01mm) and dust (diameter less than 0.001mm) according to their size. Both large particles and small particles are plastic particles that can be used for blow molding again, while dust and powder are difficult to process and use. At the same time, some dust will adhere to large or small particles due to the electrostatic effect, causing the quality of large and small particles to decline, which is not conducive to the reuse of large and small particles. Summary of the invention

[0003] The technical problem to be solved by the utility model is to separate dust from large particles and small particles and to provide an electrostatic separation device for plastic crushed particles for blow molding which can fully eliminate the static electricity between the dust and the large particles and the small particles.

[0004] The technical solution adopted by the utility model to solve the above problems is: an electrostatic separation device for crushed plastic particles for blow molding, comprising a drum screen separation component and an electrostatic separation component, wherein the crushed plastic particles are separated into large particles and small particles by the drum screen separation component, and the crushed plastic particles are separated into dust from large particles and small particles by the electrostatic separation component;

[0005] The drum screen separation assembly comprises a screen mesh, which is in a frustum shape, and is arranged to rotate along the central axis of the screen mesh, and the central axis of the screen mesh is arranged horizontally, one end of the screen mesh is a feed end, and the other end of the screen mesh is a discharge end, and the diameter of the screen mesh increases from the feed end to the discharge end; the electrostatic separation assembly is arranged inside the drum screen separation assembly;

[0006] The electrostatic separation component includes an anode plate, a corona electrode and a dust blower. The anode plate and the corona electrode are arranged along the central axis of the drum screen separation component. The anode plate is arranged at the feed end of the drum screen separation component, the corona electrode is arranged at the discharge end of the drum screen separation component, and the dust blower is arranged on the side close to the feed end of the drum screen separation component.

[0007] Compared with the prior art, the utility model has the advantages that: according to the difference in diameter of large particles and small particles of the granular material, large particles and small particles are separated by a drum screen separation component, so that large particles and small particles can be classified and used according to the properties of the product, and then the dust attached to the large particles and small particles is separated by an electrostatic separation component, thereby improving the quality of large particles and small particles, thereby ensuring the quality of products produced by large particles and small particles. During the rotation of the screen mesh, the plastic crushed particles will follow the screen mesh to flip and move toward the discharge end of the screen mesh. During the flipping and movement of the plastic crushed particles, large particles and small particles can be fully dispersed, and small particles are more likely to fall from the mesh of the screen mesh, thereby achieving the separation of large particles and small particles. The electrostatic separation component is arranged inside the drum screen separation component. When the plastic crushed particles are turned over with the drum screen separation component, the large particles and small particles are fully broken up. At this time, the corona electrode discharge can fully eliminate the static electricity between the dust and the large particles and small particles, so that the dust is separated from the large particles and small particles. Then, the anode plate attracts the charged dust and moves it toward the anode plate. During the dust movement, the dust induced draft fan absorbs the dust, so as to avoid the dust accumulation inside the drum screen separation component, thereby realizing the separation of dust from large particles and small particles and ensuring the quality of large particles and small particles.

[0008] As another improvement of the present invention, a shell is provided on the outside of the screen net, a feed end of the screen net is provided with a feed end support frame, and a discharge end of the screen net is provided with a discharge end support frame. The feed end support frame is connected to the motor through a gear assembly, and the discharge end support frame is rotatably connected to the shell. Through the improvement, the rotation of the screen net is realized.

[0009] As another improvement of the present invention, a dust collection channel and a dust collection drawer are provided at the air outlet of the dust induced draft fan, and the dust collection drawer is provided at the end of the dust collection channel. A deceleration plate and a collection plate are provided on the dust collection channel, and the deceleration plate is arranged obliquely upward along the flow direction of the airflow, and the collection plate is arranged obliquely downward along the flow direction of the airflow. Through the improvement, when the dust is discharged from the dust induced draft fan, there will be a higher discharge rate, and the dust will be in a higher flow state, which is not conducive to the collection of dust. The design of the deceleration plate can first reduce the flow velocity of the airflow carrying dust, which is conducive to the precipitation and collection of dust, and then the dust flows to the collection plate for precipitation, and the dust flows along the collection plate to the dust collection drawer for collection.

[0010] As another improvement of the utility model, the deceleration plate and the collecting plate are respectively fixedly connected on both sides of the dust collecting channel so that the dust flow direction is zigzag. Through the improvement, a longer dust collecting channel can be realized through a smaller space, and the purpose of deceleration and collection can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] Figure 2 It is a schematic diagram of the cross-sectional structure of the drum screen separation component of the utility model.

[0013] Figure 3 It is a schematic diagram of the dust collection channel structure and dust movement path of the utility model.

[0014] As shown in the figure: 1. Drum screen separation assembly, 1.1. Screen mesh, 1.2. Feed end support frame, 1.3. Discharge end support frame, 1.4. Gear assembly, 1.5. Motor, 1.6. Sheet metal slide, 1.7. Small particle collection drawer, 1.8. Discharge port, 2. Electrostatic separation assembly, 2.1. Anode plate, 2.2. Corona electrode, 2.3. Dust induced draft fan, 3. Speed ​​reducer, 4. Collection plate, 5. Dust collection drawer. DETAILED DESCRIPTION

[0015] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0016] like Figure 1-2 As shown, an electrostatic separation device for plastic crushed particles for blow molding comprises a drum screen separation component 1 and an electrostatic separation component 2. The plastic crushed particles include large particles, small particles and dust attached to the large particles or small particles due to electrostatic induction. The drum screen separation component 1 separates the large particles from the small particles of the plastic crushed particles, and the electrostatic separation component 2 separates the dust from the large particles and the small particles of the plastic crushed particles.

[0017] like Figure 2 As shown, the drum screen separation assembly 1 includes a screen mesh 1.1, which is in a frustum shape. The screen mesh 1.1 is rotatably arranged along the central axis of the screen mesh 1.1, and the central axis of the screen mesh 1.1 is arranged horizontally. One end of the screen mesh 1.1 is a feed end, and the other end of the screen mesh 1.1 is a discharge end. The diameter of the screen mesh 1.1 increases from the feed end to the discharge end. A shell is provided on the outside of the screen mesh 1.1, and a feed end support frame 1.2 is provided at the feed end of the screen mesh 1.1, and a discharge end support frame 1.3 is provided at the discharge end of the screen mesh 1.1. The feed end support frame 1.2 is connected to the motor 1.5 through a gear assembly 1.4, and the discharge end support frame 1.3 is rotatably connected to the shell. The gear assembly 1.4 includes a transmission shaft rotatably connected to the motor 1.5, and a driving gear is provided on the transmission shaft. The feed end support frame 1.2 is connected to the transmission gear, and the driving gear and the transmission gear are connected through a chain transmission.

[0018] like Figure 2As shown, the electrostatic separation component 2 includes an anode plate 2.1, a corona electrode 2.2 and a dust blower 2.3. The electrostatic separation component 2 is arranged inside the drum screen separation component 1. The anode plate 2.1 and the corona electrode 2.2 are arranged along the central axis of the drum screen separation component 1. The anode plate 2.1 is arranged at the feed end of the drum screen separation component 1, the corona electrode 2.2 is arranged at the discharge end of the drum screen separation component 1, and the dust blower 2.3 is arranged on the side close to the feed end of the drum screen separation component 1. A discharge port 1.8 for discharging large particles is provided at the discharge end.

[0019] The drum screen separation assembly 1 also includes a sheet metal chute 1.6 and a small particle collection drawer 1.7. The sheet metal chute 1.6 is inclined below the screen mesh 1.1 to receive the small particles separated from the screen mesh 1.1. The small particle collection drawer 1.7 is arranged at the end of the sheet metal chute 1.6 to collect small particles.

[0020] like Figure 3 As shown, a dust collecting channel and a dust collecting drawer 5 are provided at the air outlet of the dust induced draft fan 2.3. The dust collecting drawer 5 is arranged at the end of the dust collecting channel. A deceleration plate 3 and a collecting plate 4 are provided on the dust collecting channel. The deceleration plate 3 is arranged obliquely upward along the airflow direction, and the collecting plate 4 is arranged obliquely downward along the airflow direction. The deceleration plate 3 and the collecting plate 4 are respectively fixedly connected to the two sides of the dust collecting channel, so that the dust flow direction is in a zigzag shape, so that a longer dust collecting channel is formed in a smaller space, so as to achieve the purpose of decelerating and collecting the dust.

[0021] The above description is only for the best embodiment of the utility model, but it cannot be understood as a limitation of the claims. The utility model is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the protection scope of the independent claims of the utility model are within the protection scope of the utility model.

Claims

1. An electrostatic separation device for crushed plastic particles for blow molding, characterized in that: It comprises a drum screen separation component (1) and an electrostatic separation component (2), wherein the crushed plastic particles are separated into large particles and small particles by the drum screen separation component (1), and the crushed plastic particles are separated into dust from large particles and small particles by the electrostatic separation component (2); The drum screen separation component (1) comprises a screen mesh (1.1), the screen mesh (1.1) is in a frustum shape, the screen mesh (1.1) is rotatably arranged along the central axis of the screen mesh (1.1), the central axis of the screen mesh (1.1) is arranged horizontally, one end of the screen mesh (1.1) is a feed end, the other end of the screen mesh (1.1) is a discharge end, and the diameter of the screen mesh (1.1) increases in a direction from the feed end to the discharge end; the electrostatic separation component (2) is arranged inside the drum screen separation component (1); The electrostatic separation component (2) comprises an anode plate (2.1), a corona electrode (2.2) and a dust induced draft fan (2.3); the anode plate (2.1) and the corona electrode (2.2) are arranged along the central axis of the drum screen separation component (1); the anode plate (2.1) is arranged at the feed end of the drum screen separation component (1); the corona electrode (2.2) is arranged at the discharge end of the drum screen separation component (1); and the dust induced draft fan (2.3) is arranged on the side close to the feed end of the drum screen separation component (1).

2. The electrostatic separation device for crushed plastic particles for blow molding according to claim 1, characterized in that: A shell is provided on the outside of the sieve net (1.1); a feed end support frame (1.2) is provided at the feed end of the sieve net (1.1); a discharge end support frame (1.3) is provided at the discharge end of the sieve net (1.1); the feed end support frame (1.2) is transmission-connected to a motor (1.5) via a gear assembly (1.4); and the discharge end support frame (1.3) is rotationally connected to the shell.

3. The electrostatic separation device for crushed plastic particles for blow molding according to claim 1, characterized in that: A dust collection channel and a dust collection drawer (5) are provided at the air outlet of the dust induced draft fan (2.3); the dust collection drawer (5) is arranged at the end of the dust collection channel; a deceleration plate (3) and a collection plate (4) are provided on the dust collection channel; the deceleration plate (3) is arranged obliquely upward along the direction of airflow, and the collection plate (4) is arranged obliquely downward along the direction of airflow.

4. The electrostatic separation device for crushed plastic particles for blow molding according to claim 3, characterized in that: The deceleration plate (3) and the collection plate (4) are respectively fixedly connected to the two sides of the dust collection channel, so that the dust flow direction is in a zigzag shape.

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