Dust removal device for film production
By using an atomization chamber to remove static electricity during the film production process, combined with blowing and exhaust components, the problem of difficult dust removal on the film surface is solved, achieving a highly efficient dust removal effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAINING FANGSHENG PACKAGING MATERIAL CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-05-15
AI Technical Summary
In the existing technology, dust is difficult to remove effectively during the film production process due to electrostatic effects, and the dust removal effect of air blowing is not good, which makes it easy for dust to be re-adsorbed.
The atomization chamber atomizes water into fine particles that adhere to the film, removing static electricity. Dust is then blown off through the air vents in the dust removal chamber, and the exhaust assembly removes the flying dust, preventing it from re-adhering.
It achieves more thorough dust removal, prevents dust from re-adsorbing, and improves dust removal efficiency.
Smart Images
Figure CN224240154U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dust removal technology, specifically to a dust removal device for thin film production. Background Technology
[0002] Plastic film is produced by blowing polymer raw materials using a blow molding machine. Because the raw materials are heated and melted inside the blow molding machine, the resulting film has a high temperature. High temperature is a significant factor in causing polymers to become charged. At high temperatures, the thermal motion of molecules on the material surface increases, and the electrostatic interactions between molecules also intensify, leading to the accumulation of static charge on the material surface. Therefore, the film surface easily attracts dust, and dust removal treatment is necessary before rolling the plastic film into a round shape.
[0003] In the prior art, a utility model with patent number "CN208664198U" discloses a dust removal device for film production, including a dust removal box. The dust removal box contains several guide rollers, and inlet and outlet ports are respectively located on both sides of the dust removal box. A dust removal roller is located at the inlet, and a dust suction device is located below the dust removal roller. The dust suction device includes a first suction port and several second suction ports located on one side of the first suction port. The first and second suction ports are connected to a dust collection tank via pipes. A vacuum cleaner is located beside the dust collection tank. A cooler and a fan are connected to the top of the dust removal box. An air inlet pipe is located at the outlet of the fan and is connected to a distribution pipe located inside the dust removal box. Several blowers are located on the distribution pipe. This utility model utilizes blowers, dust removal rollers, and a dust suction device to remove dust from the film, and the cooled gas also helps to lower the temperature of the film, facilitating subsequent winding operations.
[0004] In the aforementioned patent, dust removal is achieved by directly blowing air onto the film through a blower head. However, because the film surface is statically charged, it has a strong adsorption effect on dust. Therefore, it is difficult to blow off firmly attached dust by directly blowing air. Furthermore, the blown-off dust flies in the air, and because the static electricity on the film surface still exists, it is easy for the flying dust to be adsorbed back onto the film, resulting in poor dust removal effect. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art, this utility model proposes a dust removal device for thin film production.
[0006] To achieve the above-mentioned technical effects, the present invention adopts the following solution:
[0007] A dust removal device for thin film production, comprising:
[0008] The dust collector has corresponding inlets and outlets at its left and right ends, respectively. Inside the dust collector, there is an atomizing chamber near the inlet and connected to the inlet, and a dust collection chamber near the outlet and connected to the outlet. The atomizing chamber and the dust collection chamber are connected through a connecting port.
[0009] An atomizing component, located in an atomizing chamber, includes a water tank and several atomizing plates disposed within the water tank;
[0010] The dust removal assembly is located in the dust removal chamber and includes two sets of air outlets. The two sets of air outlets are arranged vertically at intervals, with one set being higher than the outlet and the other set being lower than the outlet. The air outlets are connected to a fan chamber, which is equipped with a fan. An air inlet communicating with the fan chamber is opened on the side wall of the dust removal box, and a first dust removal screen is provided at the air inlet.
[0011] The exhaust assembly includes several exhaust holes located on the side wall of the dust collector and communicating with the dust collector chamber, and a first exhaust fan is provided in each exhaust hole.
[0012] In a preferred embodiment, the water tank is located at the bottom of the atomizing chamber, and inclined guide plates are fixedly connected to the four side walls of the atomizing chamber. The guide plates are located below the inlet, and the lower end of the guide plates extends inclined inward. The four guide plates together form a constricted guide channel, which is located above the water tank, and the lower end of the guide channel is larger than the size of the water tank.
[0013] In a preferred embodiment, the water tank is connected to a water injection pipe that extends out of the dust collection box, and the inner wall of the water tank is equipped with an upper liquid level sensor located above and a lower liquid level sensor located below.
[0014] In a preferred embodiment, a buffer chamber is provided between the atomizing chamber and the dust removal chamber. The connection port includes a first connection port and a second connection port. The atomizing chamber and the buffer chamber are connected through the first connection port, and the dust removal chamber and the buffer chamber are connected through the second connection port. Several ventilation openings communicating with the buffer chamber are provided on the side wall of the dust removal box, and the ventilation openings are equipped with a second exhaust fan.
[0015] In the preferred technical solution, each group of air outlets is provided with multiple air outlets, which are distributed at intervals along the conveying direction of the film.
[0016] Compared with existing technologies, the beneficial effects are:
[0017] This invention features a simple structure and is easy to use. The film is fed into an atomizing chamber where water mist cools it and removes static electricity from its surface. It then enters a dust removal chamber where it is air-dried. Due to the removal of static electricity and the dissipation of the film's high temperature, dust on the dried film surface easily falls off and is blown away. The airborne dust is then expelled by a first-row fan. This invention achieves more thorough dust removal from the film surface, and the dust is less likely to re-adhere to the film surface, thus improving the dust removal efficiency. Attached Figure Description
[0018] Figure 1 This is a cross-sectional schematic diagram of the present invention.
[0019] Reference numerals: 1. Dust collection box; 2. Atomization chamber; 3. Buffer chamber; 4. Dust collection chamber; 5. Inlet; 6. Outlet; 7. First passageway; 8. Second passageway; 9. Water tank; 10. Upper liquid level sensor; 11. Lower liquid level sensor; 12. Water injection pipe; 13. Guide plate; 14. Guide channel; 15. Second exhaust fan; 16. Exhaust port; 17. First exhaust fan; 18. Fan chamber; 19. Fan; 20. Air outlet; 21. Air inlet. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] A dust removal device for thin film production includes: a dust removal box 1, an atomizing component, a dust removal component, and an exhaust component.
[0022] The dust collector 1 has an inlet 5 and an outlet 6 at its left and right ends, respectively. Inside the dust collector 1, there is an atomizing chamber 2 that is close to and connected to the inlet 5, and a dust collection chamber 4 that is close to and connected to the outlet 6. The atomizing chamber 2 and the dust collection chamber 4 are connected through a connecting port. The film enters the atomizing chamber 2 from the inlet 5, then enters the dust collection chamber 4 through the connecting port, and finally exits from the outlet 6.
[0023] The atomizing component is located in the atomizing chamber 2, including a water tank 9 and several atomizing plates located in the water tank 9. The atomizing plates use existing technology to atomize the water in the water tank 9 through high-frequency vibration.
[0024] The dust removal assembly, located within the dust removal chamber 4, includes two sets of air outlets 20. These two sets of air outlets 20 are vertically spaced, with one set higher than the outlet 6 and the other lower, positioned above and below the membrane, respectively. Each air outlet 20 is connected to a fan chamber 18, which houses a fan 19. An air inlet 21, communicating with the fan chamber 18, is located on the side wall of the dust removal box 1. The air inlet 21 is equipped with a first dust removal screen, which is used to remove dust from the air entering the fan chamber 18.
[0025] The exhaust assembly includes several exhaust holes 16 located on the side wall of the dust collection box 1 and communicating with the dust collection chamber 4. A first exhaust fan 17 is installed inside each exhaust hole. As air is blown into the dust collection chamber 4 through the exhaust holes, dust blown off the membrane flies into the dust collection chamber 4. The first exhaust fan 17 is activated to exhaust the air in the dust collection chamber 4 through the exhaust holes 16, thereby removing the dust flying in the dust collection chamber 4 and preventing the dust from falling back onto the membrane.
[0026] The film is fed into the atomization chamber 2 through inlet 5, where the atomized water mist adheres to the film, wetting it. The water mist fills the atomization chamber 2, creating a continuous path to remove static electricity from the film surface. Furthermore, since the film is still at a high temperature after being formed by the blow molding machine, the water mist also helps to cool it down. The moistened film enters the dust removal chamber 4 through the inlet. The fan 19 is activated, blowing air towards the film through the air outlet 20. This first dries the moisture on the film and blows off the dust. Finally, the dust-free film is discharged through outlet 6 and then rolled up. The dust blown off the film flies around in the dust removal chamber 4. To prevent the dust from falling back onto the film, the first row of fans 17 is activated, expelling the air from the dust removal chamber 4 through the exhaust port 16, thus removing the flying dust from the dust removal chamber 4.
[0027] In a preferred embodiment, the water tank 9 is located at the bottom of the atomizing chamber 2, and inclined guide plates 13 are fixedly connected to the four sides of the atomizing chamber 2. The guide plates 13 are located below the inlet 5, and the lower end of the guide plates 13 extends inclined inward. The four guide plates 13 together form a narrowed guide channel 14. The guide channel 14 is located above the water tank 9, and the lower end of the guide channel 14 is larger than the size of the water tank 9.
[0028] After the water mist in the atomizing chamber 2 adheres to the inner wall of the atomizing chamber 2 and collects, it will generate water droplets that flow down the inner wall of the atomizing chamber 2. The water droplets are guided into the water tank 9 by the guide plate 13 for collection, thus saving water resources.
[0029] In a preferred embodiment, the water tank 9 is connected to a water injection pipe 12, which extends out of the dust removal box 1. An upper liquid level sensor 10 is located above the water tank 9, and a lower liquid level sensor 11 is located below the water tank 9.
[0030] As the water mist diffuses out of the atomizing chamber 2 through the inlet 5 and the connecting port, the water in the water tank 9 will gradually decrease as it atomizes. When the liquid level in the water tank 9 drops to the position of the lower liquid level sensor 11, water is injected into the water tank 9 through the water injection pipe 12. When the liquid level rises to the position of the upper liquid level sensor 10, the water injection stops.
[0031] In a preferred embodiment, a buffer chamber 3 is provided between the atomizing chamber 2 and the dust removal chamber 4. The communication port includes a first communication port and a second communication port. The atomizing chamber 2 and the buffer chamber 3 are connected through the first communication port, and the dust removal chamber 4 and the buffer chamber 3 are connected through the second communication port. Several ventilation openings connected to the buffer chamber 3 are provided on the side wall of the dust removal box 1. The ventilation openings are equipped with a second exhaust fan 15.
[0032] The vent is located near the first connecting port. Since the water mist in the atomization chamber 2 will diffuse out from the atomization chamber 2, a buffer chamber 3 is set to prevent the water mist from entering the dust removal chamber 4 and causing low film drying efficiency. After the water mist enters the buffer chamber 3, it is discharged from the vent through the air duct of the second exhaust fan 15.
[0033] In the preferred technical solution, each group of air outlets 20 is provided with multiple air outlets 20, and the multiple air outlets 20 are distributed at intervals along the conveying direction of the film.
[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0036] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
Claims
1. A dust removal device for thin film production, characterized in that, include: Dust collection box (1), with corresponding inlet (5) and outlet (6) at the left and right ends respectively. The dust collection box (1) is provided with an atomizing chamber (2) near the inlet (5) and connected to the inlet (5), and a dust collection chamber (4) near the outlet (6) and connected to the outlet (6). The atomizing chamber (2) and the dust collection chamber (4) are connected through a communication port. The atomizing component is located in the atomizing chamber (2) and includes a water tank (9) and several atomizing plates located in the water tank (9); The dust removal assembly is located in the dust removal chamber (4) and includes two sets of air outlets (20). The two sets of air outlets (20) are arranged at intervals in the vertical direction, and one set is higher than the outlet (6) and the other set is lower than the outlet (6). The air outlets (20) are connected to the fan chamber (18). The fan chamber (18) is equipped with a fan (19). The side wall of the dust removal box (1) is provided with an air inlet (21) that communicates with the fan chamber (18). The air inlet (21) is provided with a first dust removal screen. The exhaust assembly includes several exhaust holes (16) located on the side wall of the dust collector (1) and communicating with the dust collector chamber (4), wherein a first exhaust fan (17) is provided in the exhaust hole.
2. The dust removal device for thin film production as described in claim 1, characterized in that, The water tank (9) is located at the bottom of the atomizing chamber (2). Inclined guide plates (13) are fixedly connected to the four sides of the atomizing chamber (2). The guide plates (13) are located below the inlet (5). The lower end of the guide plates (13) extends inward at an angle. The guide plates (13) around the perimeter form a narrowed guide channel (14). The guide channel (14) is located above the water tank (9), and the size of the lower end of the guide channel (14) is larger than the size of the water tank (9).
3. The dust removal device for thin film production as described in claim 1, characterized in that, The water tank (9) is connected to a water injection pipe (12), which extends out of the dust removal box (1). The inner wall of the water tank (9) is provided with an upper liquid level sensor (10) located above and a lower liquid level sensor (11) located below.
4. The dust removal device for thin film production as described in claim 1, characterized in that, A buffer chamber (3) is provided between the atomizing chamber (2) and the dust removal chamber (4). The connecting port includes a first connecting port and a second connecting port. The atomizing chamber (2) and the buffer chamber (3) are connected through the first connecting port. The dust removal chamber (4) and the buffer chamber (3) are connected through the second connecting port. Several ventilation openings connected to the buffer chamber (3) are provided on the side wall of the dust removal box (1). The ventilation openings are equipped with a second exhaust fan (15).
5. The dust removal device for thin film production as described in claim 1, characterized in that, Each set of air outlets (20) has multiple outlets, and the multiple air outlets (20) are distributed at intervals along the conveying direction of the film.