A pre-dust removal device for plastic processing

Abstract

The utility model discloses a kind of front dust removal equipment of plastic processing, including dust removal box, the top of dust removal box is fixedly connected with box cover, the outer wall of dust removal box is fixedly connected with equipment frame, the inside of equipment frame is fixedly connected with step motor, the outer wall of round plate is fixedly interconnected with suction pipe, the output shaft of step motor and the outer wall of suction pipe are fixedly provided with gear, two gears are engaged connection.The utility model passes through negative pressure suction dust, is filtered by filter silk screen after being dispersed by conical plate, and step motor drives gear to make suction pipe, round plate etc. rotate, to drive filter silk screen rotation, improve dust capture efficiency;Simultaneously, electric motor drives nylon brush rotation, clean filter silk screen outer surface, prevent blockage;When replacing maintenance, open box cover, remove circular ring fixation to be taken out. Overall need not frequent shutdown manual cleaning, and cleaning and replacement operation are simple, avoid secondary dust raising.

Description

Technical Field

[0001] This utility model relates to the field of dust removal equipment technology, and in particular to a pre-dust removal device for plastic processing. Background Technology

[0002] During plastic processing, especially in processes like screening and crushing, plastic granules often contain dust (due to electrostatic adsorption). This dust not only affects the product's appearance but can also lead to uneven coatings and reduced adhesion. Dust accumulation inside equipment can disrupt its normal operation, increasing energy consumption and maintenance costs. Using dust removal equipment can keep the equipment clean, extend its lifespan, and improve production efficiency.

[0003] In existing technologies, after prolonged use, dust easily accumulates and clogs the mesh of static filters inside dust removal equipment, which not only reduces dust removal efficiency but also increases wind resistance and affects suction performance. Frequent shutdowns for manual cleaning are required, severely impacting production efficiency. Most equipment uses a fixed filter structure, which requires complete disassembly for cleaning or replacing the filter, making the operation cumbersome and prone to generating secondary dust during cleaning, thus failing to meet environmental protection requirements. Therefore, we propose a pre-dust removal device for plastic processing to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a pre-dust removal device for plastic processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pre-dust removal device for plastic processing includes a dust collection box and a circular plate. A box cover is fixedly connected to the top of the dust collection box. An equipment frame is fixedly connected to the outer wall of the dust collection box. A stepper motor is fixedly connected inside the equipment frame. An exhaust pipe is fixedly connected to the outer wall of the circular plate. Gears are fixedly fitted onto the outer wall of both the stepper motor output shaft and the exhaust pipe, and the two gears are meshed together. An arc-shaped support plate is fixedly connected to the outer wall of the circular plate. A circular ring is placed inside the arc-shaped support plate, and the top of the circular ring is fixedly connected to the outer wall of the circular plate. An annular mesh plate is fixedly connected to the outer wall of the circular ring. A filter screen is fixedly fitted onto the outer wall of the annular mesh plate. A conical plate is fixedly connected to one end of the annular mesh plate. A dust collection assembly is located inside the dust collection box.

[0007] Preferably, the dust removal assembly includes a hollow shaft, an electric motor is fixedly connected to the outer wall of the dust removal box, the outer wall of the output shaft of the electric motor is fixedly connected to one end of the shaft, a plurality of nylon brushes are uniformly fixedly connected to the outer wall of the shaft, and an air inlet pipe is fixedly connected to the outer wall of the dust removal box. The dust removal assembly is used to clean dust from the equipment and plastic particles.

[0008] Preferably, the outer wall of the dust collector is provided with an assembly hole, the inner wall of the assembly hole is rotatably connected to the outer wall of the exhaust pipe, and a bearing is fixedly sleeved on the outer wall of the exhaust pipe, with the outer ring of the bearing fixedly connected to the outer wall of the dust collector.

[0009] Preferably, one end of the exhaust pipe is fixedly connected to a rotary joint, the outer wall of the rotary joint is fixedly connected to an air pipe, one end of the air pipe passes through the outer wall of the equipment frame and is fixedly connected to a blower, and the operation of the blower causes the air intake pipe to form a negative pressure in the dust collection box through the air pipe, the rotary joint and the exhaust pipe.

[0010] Preferably, the outer wall of the dust collector is provided with a circular hole, and the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the electric motor, so that the shaft is driven to rotate by the electric motor.

[0011] Preferably, one end of each of the multiple nylon brushes is in contact with the outer wall of the filter mesh, and the multiple nylon brushes clean the outer surface of the filter mesh.

[0012] Preferably, the bottom of the dust collector is fixedly connected to a material hopper, and an electronic valve is fixedly installed at the bottom of the material hopper, which controls the opening and closing of the material hopper.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] This system uses negative pressure to extract dust, which is then dispersed by a conical plate and filtered by a filter screen. A stepper motor drives gears to rotate the extraction pipe and circular plate, which in turn rotates the filter screen, improving dust collection efficiency. Simultaneously, an electric motor drives a nylon brush to clean the outer surface of the filter screen and prevent clogging. For replacement and maintenance, simply open the cover and release the retaining ring to remove the filter. The entire system eliminates the need for frequent shutdowns for manual cleaning, and cleaning and replacement operations are simple, avoiding secondary dust generation. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a pre-dust removal device for plastic processing proposed in this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of a pre-dust removal device for plastic processing proposed in this utility model;

[0018] Figure 3This is a top view of a pre-dust removal device for plastic processing proposed in this utility model.

[0019] Figure 4 This is a partial three-dimensional structural diagram of a pre-dust removal device for plastic processing proposed in this utility model.

[0020] In the diagram: 1. Dust collector; 2. Cover; 3. Stepper motor; 4. Exhaust pipe; 5. Circular plate; 6. Arc-shaped support plate; 7. Circular ring; 8. Circular mesh plate; 9. Filter mesh; 10. Conical plate; 11. Electric motor; 12. Shaft; 13. Nylon brush; 14. Inlet pipe; 15. Hopper; 16. Electronic valve; 17. Gear. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Depend on Figures 1-4 As shown, a pre-dust removal device for plastic processing is disclosed, comprising a dust collection box 1 and a circular plate 5. A box cover 2 is fixedly connected to the top of the dust collection box 1 by existing screws. A sealing gasket is provided between the box cover 2 and the dust collection box 1 to ensure a stable negative pressure environment and prevent dust leakage. An equipment frame is fixedly connected to the outer wall of the dust collection box 1. A stepper motor 3 is fixedly connected inside the equipment frame. The stepper motor 3 rotates in the opposite direction to the electric motor 11. An exhaust pipe 4 is fixedly connected to the outer wall of the circular plate 5. The power of the stepper motor 3 is transmitted to the exhaust pipe 4 through meshing transmission. An assembly hole is provided on the outer wall of the dust collection box 1. The inner wall of the assembly hole is rotatably connected to the outer wall of the exhaust pipe 4. A rotary joint is fixedly connected to one end of the exhaust pipe 4. An air pipe is fixedly connected to the outer wall of the rotary joint. One end of the air pipe passes through the outer wall of the equipment frame and is fixedly connected to a blower.

[0023] Gears 17 are fixedly fitted on the output shaft of stepper motor 3 and the outer wall of suction pipe 4. The two gears 17 are meshed and connected. An arc-shaped support plate 6 is fixedly connected to the outer wall of circular plate 5. A circular ring 7 is placed inside the arc-shaped support plate 6. The bottom of the circular ring 7 is supported by the arc-shaped support plate 6. The top of the circular ring 7 is fixedly connected to the outer wall of circular plate 5 by existing screws. An annular mesh plate 8 is fixedly connected to the outer wall of annular mesh plate 8. A filter mesh 9 is fixedly fitted on the outer wall of annular mesh plate 8. The filter mesh 9 is made of nylon. The annular structure expands the filtration area and improves dust removal efficiency. The filter mesh 9 can rotate with annular mesh plate 8, which facilitates the subsequent dynamic cleaning of its outer surface by nylon brush 13 and prevents dust accumulation and clogging of the mesh. A conical plate 10 is fixedly connected to one end of annular mesh plate 8. A hopper 15 is fixedly connected to the bottom of dust collector 1. An electronic valve 16 is fixedly installed at the bottom of hopper 15.

[0024] The dust collector 1 is equipped with a dust removal component inside. The dust removal component includes a hollow shaft 12. An electric motor 11 is fixedly connected to the outer wall of the dust collector 1. A circular hole is opened on the outer wall of the dust collector 1. The inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the electric motor 11. The outer wall of the output shaft of the electric motor 11 is fixedly connected to one end of the shaft 12. Multiple nylon brushes 13 are evenly fixedly connected to the outer wall of the shaft 12. The electric motor 11 drives the nylon brushes 13 to rotate. In conjunction with the rotation of the filter screen 9, a dynamic cleaning mechanism is formed. There is no need to stop the machine for manual cleaning. This can effectively prevent the filter screen 9 from clogging and maintain the dust removal efficiency. One end of each of the multiple nylon brushes 13 is in contact with the outer wall of the filter screen 9. An air inlet pipe 14 is fixedly connected to the outer wall of the dust collector 1.

[0025] Working principle: During use, one end of the air inlet pipe 14 is connected to the plastic granulation equipment (open type) that needs dust removal through an existing pipeline. When the blower is running, a negative pressure is formed inside the dust collection box 1, and dust is then drawn into the dust collection box 1 through the air inlet pipe 14 and the pipeline. The airflow carrying dust impacts the outer wall of the conical plate 10 and is dispersed, and is filtered along the filter mesh 9. The filtered dust is located inside the dust collection box 1 and on the outer surface of the filter mesh 9. The purified airflow is discharged through the exhaust pipe 4, rotary joint and air pipe. During filtration, the stepper motor 3 drives the gear 17 connected to it to rotate, and the meshing between the two gears 17 causes the other gear 17 to drive the exhaust pipe 4 and the circular plate. The circular plate 5 rotates, causing the circular ring 7 and the annular mesh plate 8 to rotate, which in turn causes the filter screen 9 to rotate, improving dust collection efficiency. When cleaning the filter screen 9, the blower stops running, and the electric motor 11 runs, driving the shaft 12 and multiple nylon brushes 13 to rotate. The rotation of the multiple nylon brushes 13, in conjunction with the rotation of the filter screen 9, cleans its outer surface to prevent clogging. Dust falls downward into the hopper 15, and is discharged through the opening of the electronic valve 16 for separate processing. When replacing or maintaining the filter screen 9, open the cover 2, turn the screws between the circular ring 7 and the circular plate 5 to release the position of the circular ring 7, and then remove the circular ring 7 from the arc-shaped support plate 6.

[0026] It should be noted that, in actual use, an existing PLC controller can be added. The PLC controller is electrically connected to the stepper motor 3, the electric motor 11, and the blower to facilitate the control of the overall operation.

[0027] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0028] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pre-dust removal device for plastic processing, comprising a dust removal box (1) and a circular plate (5), characterized in that, The top of the dust collector (1) is fixedly connected to a cover (2). The outer wall of the dust collector (1) is fixedly connected to a frame. The inside of the frame is fixedly connected to a stepper motor (3). The outer wall of the circular plate (5) is fixedly connected to an exhaust pipe (4). The output shaft of the stepper motor (3) and the outer wall of the exhaust pipe (4) are both fixedly fitted with gears (17). The two gears (17) are meshed together. The outer wall of the circular plate (5) is fixedly connected to an arc-shaped support plate (6). The inside of the arc-shaped support plate (6) is a ring (7). The top of the ring (7) is fixedly connected to the outer wall of the circular plate (5). The outer wall of the ring (7) is fixedly connected to an annular mesh plate (8). The outer wall of the annular mesh plate (8) is fixedly fitted with a filter mesh (9). One end of the annular mesh plate (8) is fixedly connected to a conical plate (10). The dust collector (1) is equipped with a dust removal component inside.

2. A pre-dusting device for plastic processing according to claim 1, characterized in that, The dust removal assembly includes a hollow shaft (12), an electric motor (11) is fixedly connected to the outer wall of the dust removal box (1), the outer wall of the output shaft of the electric motor (11) is fixedly connected to one end of the shaft (12), a plurality of nylon brushes (13) are evenly fixedly connected to the outer wall of the shaft (12), and an air inlet pipe (14) is fixedly connected to the outer wall of the dust removal box (1).

3. The pre-dusting device for plastic processing according to claim 1, wherein The outer wall of the dust collector (1) is provided with an assembly hole, and the inner wall of the assembly hole is rotatably connected to the outer wall of the exhaust pipe (4).

4. The pre-dusting device for plastic processing according to claim 1, wherein One end of the air extraction pipe (4) is fixedly connected to a rotary joint, and the outer wall of the rotary joint is fixedly connected to an air pipe. One end of the air pipe passes through the outer wall of the equipment frame and is fixedly connected to a blower.

5. The pre-dusting device for plastic processing according to claim 2, wherein The outer wall of the dust collector (1) is provided with a circular hole, and the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the electric motor (11).

6. A pre-dusting device for plastic processing according to claim 2, characterized in that, One end of each of the multiple nylon brushes (13) is in contact with the outer wall of the filter mesh (9).

7. The pre-dusting apparatus for plastic processing according to claim 1, wherein The bottom of the dust collector (1) is fixedly connected to a hopper (15), and an electronic valve (16) is fixedly installed at the bottom of the hopper (15).

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