Spraying electrostatic dust collection device

Abstract

The utility model discloses a spraying electrostatic dust collection device which comprises a dust collection box, a collection box is installed on the lower portion of the dust collection box, a dust suction pump is installed between the dust collection box and the collection box, a concave frame is installed below the dust collection box, an electric control box is installed on one side of the concave frame, and a control panel is installed in the electric control box. A transverse plate is installed in the dust removal box, the side wall of the transverse plate is slidably connected with multiple sets of movable frame plates in a sleeving mode, multiple sets of movable rollers are installed in the multiple sets of movable frame plates through bearings, two sets of installation blocks are installed on the upper portions of the multiple sets of movable frame plates, and installation screw rods slidably penetrate through the opposite faces of the two sets of installation blocks on the same side. The spraying electrostatic dust collection device has the advantages that the transverse plate and the movable frame plate are arranged, through the transverse plate and the movable frame plate, movable cleaning of workpieces can be achieved without the help of a belt conveyor structure, and continuous use of the spraying electrostatic dust collection device is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of electrostatic dust removal technology, specifically to a spray electrostatic dust removal device. Background Technology

[0002] Electrostatic dust removal is a technology that uses electrostatic fields to remove particulate matter such as dust from gases. It has the advantages of high efficiency and low energy consumption and is widely used in industrial waste gas treatment, air purification and other fields. Spraying is a process in which materials such as paint are sprayed onto the surface of an object through specific equipment to form a uniform coating. Before spraying, an electrostatic dust removal device is required to complete the electrostatic dust removal treatment of the workpiece. In practice, it has the advantages of simple operation, stable structure and good performance.

[0003] Existing electrostatic dust removal devices for spraying require the use of belt conveyors to transport workpieces. However, there are gaps between the rollers and the conveyor belt of the belt conveyor structure. Impurities entering these gaps can affect the subsequent transport of workpieces. In addition, impurities can enter the collection structure, and without a cleaning structure, it is difficult to remove the impurities from inside the collection structure. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a spray electrostatic dust removal device that can achieve workpiece movement and cleaning without the need for a belt conveyor structure, and has a cleaning structure that facilitates the removal of impurities from inside the collection structure, thereby solving the problems mentioned in the background technology.

[0006] (II) Technical Solution

[0007] To achieve the advantages of moving and cleaning workpieces without the need for a belt conveyor structure, and having a cleaning structure that facilitates the removal of impurities from inside the collection structure, the specific technical solution adopted by this utility model is as follows: A spray electrostatic dust removal device includes a dust collection box, a collection box installed at the lower part of the dust collection box, a dust suction pump installed between the dust collection box and the collection box, a concave frame installed below the dust collection box, and an electrical control box installed on one side of the concave frame, with a control panel installed inside the electrical control box. A horizontal plate is installed inside the dust collection box, and multiple sets of movable frame plates are slidably sleeved on the side wall of the horizontal plate. Multiple sets of movable rollers are installed inside each set of movable frame plates via bearings. Two sets of mounting blocks are installed on the upper part of each set of movable frame plates, with the two sets of mounting blocks on the same side facing each other. Each set of movable frame plates has a sliding screw rod that slides through it. Clamping plates are installed at the opposing ends of the two sets of screw rods on the same side. Two sets of mounting nuts are fitted onto the side walls of the two sets of screw rods on the same side. Two sets of scrapers are installed on both sides of the multiple sets of movable frame plates. A high-pressure air pump is installed on the upper part of the dust collector. An air jet disc is installed on the inner top surface of the dust collector. An air guide pipe is connected to the output end of the high-pressure air pump, and one end of the air guide pipe is inserted into the air jet disc. A base box is installed on the lower part of the multiple sets of movable frame plates. Two sets of sliders are slidably installed inside the multiple sets of base boxes. A telescopic spring is installed between the two sets of sliders on the same side. A first ball rod is installed on the far side of the two sets of sliders on the same side. The far ends of the two sets of first ball rods on the same side slide through both sides of the inner interior of the same set of movable frame plates.

[0008] Furthermore, two sets of electric telescopic rods are installed on the inner bottom surface of the concave frame, and each set of electric telescopic rods has a lifting box installed at its telescopic end. Each set of lifting boxes has a return spring installed on its inner bottom surface, and each set of return springs has a lifting plate installed at its upper end. Each set of lifting plates has a second ball rod installed on its upper part. The upper ends of the two sets of second ball rods slide through the inner top surface of the two sets of lifting boxes. An installation shaft is installed inside the concave frame via bearings, and a support plate and a driven gear are fixedly sleeved on the side wall of the installation shaft. The support plate is fixedly connected to the lower part of the collection box. An installation cover is installed on the end face of the concave frame, and a self-locking forward / reverse motor is installed on the end face of the installation cover. A main gear is fixedly sleeved on the output end of the self-locking forward / reverse motor. The two sets of electric telescopic rods and the self-locking forward / reverse motor are electrically connected to the control panel via wires.

[0009] Furthermore, the main gear and the driven gear mesh with each other.

[0010] Furthermore, the collection box has discharge ports on both sides, and sealing plugs are inserted inside both sets of discharge ports.

[0011] Furthermore, two sets of inclined blocks are installed on the bottom surface of the dust collection box, the input end of the dust pump is connected to a first connecting pipe, and one end of the first connecting pipe is inserted into the interior of the dust collection box, and the output end of the dust pump is connected to a second connecting pipe, and one end of the second connecting pipe is inserted into the interior of the collection box.

[0012] Furthermore, the two sets of mounting screws on the same side and the four sets of mounting nuts on the same side are threadedly engaged with each other.

[0013] Furthermore, multiple sets of positive electrode plates and multiple sets of negative electrode plates are respectively inserted into both sides of the collection box, and the control panel is electrically connected to the vacuum pump, the high-pressure air pump, the multiple sets of positive electrode plates, and the multiple sets of negative electrode plates via wires.

[0014] Furthermore, the dust collection box has inlets on both sides, and each of the two inlets is fitted with a sealing cap.

[0015] Furthermore, a breathable mesh is fixedly inserted through the rear end face of the collection box.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a spray electrostatic dust removal device, which has the following beneficial effects:

[0018] (1) This utility model is equipped with a horizontal plate and a movable frame plate. When using the electrostatic dust removal device for spraying, the operator first moves a workpiece between the two sets of clamping plates on the same side by hand, and then moves the two sets of clamping plates on the same side in opposite directions. When the two sets of clamping plates on the same side contact the workpiece, the two sets of mounting screws and the four sets of mounting nuts on the same side are engaged by the threads of each other. The operator rotates the four sets of mounting nuts on the same side clockwise and counterclockwise by hand. When the four sets of mounting nuts on the same side contact the two sets of mounting blocks on the same side, the workpiece is stably clamped and fixed. The installation of the remaining workpieces is the same as the operation. Then, two sets of sealing covers are inserted into the inside of the two sets of feed ports. When the dust removal box is tilted, multiple sets of movable frame plates can slide along the horizontal plate. During this process, the control panel is used to make the dust pump, high-pressure air pump, multiple sets of positive electrode plates and multiple sets of negative electrode plates work. Air can enter the inside of the jet disc through the air guide pipe. Finally, the air sprayed out can blow off the impurities on the surface of multiple workpieces. The dust pump can remove impurities and air through the first One and two connecting pipes are drawn into the collection box. After multiple sets of positive and negative electrode plates are energized, multiple parallel electric fields are formed in each dust collection gap. Under the influence of the parallel electric fields, the multiple sets of positive and negative electrode plates will undergo electrostatic electreting. The charge is stored in each of the multiple sets of positive and negative electrode plates made of electret material. Then, the power supply is disconnected by the control panel, and the parallel electric fields disappear. Finally, the charge stored in the multiple sets of positive and negative electrode plates will form an electrostatic field that can adsorb particulate matter and floating dust. When the multiple sets of moving frame plates move, the four sets of scrapers on the same side can scrape off the impurities adsorbed on the surface of the horizontal plate. When the two sets of first ball rods on the same side hit the object, the two sets of sliders on the same side can squeeze the set of telescopic springs on the same side, which can buffer the force of the impact of the moving frame plate on the object. Through the set horizontal plate and moving frame plates, the workpiece can be moved and cleaned without the need for a belt conveyor structure, which ensures the continuous use of the electrostatic dust removal device for spraying.

[0019] (2) This utility model is equipped with a concave frame. According to the above operation, the self-locking forward and reverse motor can be operated by using the control panel. The output end of the self-locking forward and reverse motor can drive the main gear to rotate. Since the main gear and the driven gear mesh with each other, the rotating main gear can drive the driven gear to rotate. The rotating driven gear can rotate the support plate and the collection box through the mounting shaft. The collection box can drive the dust removal box to tilt. At this time, the two sets of sealing plugs can be pulled out, and the impurities inside the collection box can be moved out through a set of discharge ports. At this time, multiple sets of moving frame plates can slide along the horizontal plate. Using the control panel, the two sets of electric telescopic rods can be extended and retracted. When the two sets of second ball rods contact the lower part of the dust removal box, they play the role of supporting the tilted dust removal box. The two sets of return springs play the role of buffering the two sets of second ball rods. The concave frame provides a cleaning structure, which can facilitate the removal of impurities inside the collection structure and improve the practicality of the electrostatic dust removal device for spraying. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the 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.

[0021] Figure 1 This is a schematic diagram of the structure of a spray electrostatic dust removal device according to an embodiment of the present utility model;

[0022] Figure 2 This is a perspective view of the clamping plate according to an embodiment of the present utility model;

[0023] Figure 3 According to the embodiments of this utility model Figure 1 Enlarged view of A in the middle;

[0024] Figure 4 According to the embodiments of this utility model Figure 1 Enlarged view of B in the middle;

[0025] Figure 5 According to the embodiments of this utility model Figure 1 A magnified view of C.

[0026] In the picture:

[0027] 1. Dust collection box; 2. Collection box; 3. Dust pump; 4. Concave frame; 5. Horizontal plate; 6. Movable frame plate; 7. Movable roller; 8. Mounting block; 9. Mounting screw; 10. Mounting nut; 11. Clamping plate; 12. High-pressure air pump; 13. Air jet disc; 14. Inclined block; 15. Feed inlet; 16. Sealing cover; 17. Base box; 18. Slider; 19. Telescopic spring; 20. First ball rod; 21. Scraper; 22. Electric telescopic rod; 23. Lifting box; 24. Return spring; 25. Lifting plate; 26. Second ball rod; 27. Mounting shaft; 28. Support plate; 29. ​​Driven gear; 30. Mounting cover; 31. Main gear; 32. Discharge port; 33. Sealing plug. Detailed Implementation

[0028] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0029] According to an embodiment of the present invention, a spray electrostatic dust removal device is provided.

[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-5 As shown, a spray electrostatic dust removal device according to an embodiment of the present invention includes a dust collection box 1, a collection box 2 installed at the lower part of the dust collection box 1, a dust suction pump 3 installed between the dust collection box 1 and the collection box 2, a concave frame 4 installed below the dust collection box 1, and an electrical control box installed on one side of the concave frame 4, with a control panel installed inside the electrical control box. A horizontal plate 5 is installed inside the dust collection box 1, and multiple sets of movable frame plates 6 are slidably sleeved on the side wall of the horizontal plate 5. Multiple sets of movable rollers 7 are installed inside the multiple sets of movable frame plates 6 through bearings. Two sets of mounting blocks 8 are installed on the upper part of each set of movable frame plates 6. Mounting screws 9 are slidably passed through the opposing surfaces of the two sets of mounting blocks 8 on the same side. Clamping plates 11 are installed at the opposing ends of the two sets of mounting screws 9 on the same side. Two sets of mounting nuts 10 are sleeved on the side walls of the two sets of mounting screws 9 on the same side. Two sets of scrapers 21 are installed on both sides of the movable frame plate 6. A high-pressure air pump 12 is installed on the upper part of the dust collection box 1. An air jet disc 13 is installed on the inner top surface of the dust collection box 1. The output end of the high-pressure air pump 12 is connected to an air guide pipe, and one end of the air guide pipe is inserted into the interior of the air jet disc 13. A base box 17 is installed on the lower part of the multiple sets of movable frame plates 6. Two sets of sliders 18 are slidably installed inside the multiple sets of base boxes 17. A telescopic spring 19 is installed between the two sets of sliders 18 on the same side. A first ball rod 20 is installed on the far side of the two sets of sliders 18 on the same side. The far ends of the two sets of first ball rods 20 on the same side slide through the inner sides of the same set of movable frame plates 6. Through the set horizontal plate 5 and movable frame plate 6, the workpiece can be moved and cleaned without the need for a belt conveyor structure, which ensures the continuous use of the electrostatic dust removal device for spraying.

[0031] In one embodiment, two sets of electric telescopic rods 22 are installed on the inner bottom surface of the concave frame 4, and each set of electric telescopic rods 22 has a lifting box 23 installed at its telescopic end. Each set of lifting boxes 23 has a return spring 24 installed on its inner bottom surface, and each set of return springs 24 has a lifting plate 25 installed at its upper end. Each set of lifting plates 25 has a second ball rod 26 installed on its upper part. The upper ends of the two sets of second ball rods 26 slide through the inner top surface of the two sets of lifting boxes 23. An installation shaft 27 is installed inside the concave frame 4 via bearings, and the sidewall of the installation shaft 27... A support plate 28 and a driven gear 29 are fixedly connected. The support plate 28 is fixedly connected to the lower part of the collection box 2. A mounting cover 30 is installed on the end face of the concave frame 4, and a self-locking forward and reverse motor is installed on the end face of the mounting cover 30. The output end of the self-locking forward and reverse motor is fixedly connected to the main gear 31. Two sets of electric telescopic rods 22 and the self-locking forward and reverse motor are electrically connected to the control panel through wires. The concave frame 4 has a cleaning structure, which makes it easy to remove impurities inside the collection structure, thus improving the practicality of the electrostatic dust removal device for spraying.

[0032] In one embodiment, the main gear 31 meshes with the driven gear 29, ensuring that the main gear 31 can drive the driven gear 29 to rotate.

[0033] In one embodiment, the collection box 2 has discharge ports 32 on both sides, and sealing plugs 33 are inserted into the interior of both discharge ports 32.

[0034] In one embodiment, two sets of inclined blocks 14 are installed on the inner bottom surface of the dust collection box 1, the input end of the dust pump 3 is connected to a first connecting pipe, and one end of the first connecting pipe is inserted into the interior of the dust collection box 1, the output end of the dust pump 3 is connected to a second connecting pipe, and one end of the second connecting pipe is inserted into the interior of the collection box 2.

[0035] In one embodiment, the two sets of mounting screws 9 and the four sets of mounting nuts 10 on the same side are threaded together to facilitate adjustment of the usage position of the four sets of mounting nuts 10 on the same side.

[0036] In one embodiment, multiple sets of positive electrode plates and multiple sets of negative electrode plates are respectively inserted into both sides of the collection box 2. The control panel is electrically connected to the vacuum pump 3, the high-pressure air pump 12, the multiple sets of positive electrode plates and multiple sets of negative electrode plates via wires. The control circuit of the control panel can be implemented by simple programming by those skilled in the art. It is common knowledge in the art. It is only used and not modified. Therefore, the control method and circuit connection will not be described in detail.

[0037] In one embodiment, the dust collection box 1 has inlets 15 on both sides, and the inside of both inlets 15 is fitted with sealing caps 16.

[0038] In one embodiment, a breathable mesh is fixedly passed through the rear end face of the collection box 2.

[0039] Working principle:

[0040] In actual use of the electrostatic dust removal device for spraying, the operator first manually moves a workpiece between the two sets of clamping plates 11 on the same side, and then moves the two sets of clamping plates 11 in opposite directions. When the two sets of clamping plates 11 contact the workpiece, the two sets of mounting screws 9 and the four sets of mounting nuts 10 on the same side engage with each other. The operator then manually rotates the four sets of mounting nuts 10 clockwise and counterclockwise. When the four sets of mounting nuts 10 contact the two sets of mounting blocks 8 on the same side, the workpiece is stably clamped and fixed. The installation of the remaining workpieces is carried out in the same way. Afterwards, two sets of sealing covers 16 are inserted into the two sets of feed inlets 15. When the dust collection box 1 is tilted, multiple sets of movable frame plates 6 can slide along the horizontal plate 5. During this process, the dust pump 3 is activated using the control panel. The high-pressure air pump 12, multiple sets of positive electrode plates, and multiple sets of negative electrode plates are in operation. Air can enter the interior of the jet disc 13 through the air guide pipe. The final ejected air can blow off impurities from the surfaces of multiple workpieces. The dust pump 3 can draw impurities and air into the interior of the collection box 2 through the first connecting pipe and the second connecting pipe. After the multiple sets of positive electrode plates and multiple sets of negative electrode plates are energized, multiple parallel electric fields will be formed in each dust collection gap. Under the influence of the parallel electric fields, the multiple sets of positive electrode plates and multiple sets of negative electrode plates will undergo electrostatic electreting. Charge is stored in each of the multiple sets of positive electrode plates and multiple sets of negative electrode plates made of electret material. Afterwards, the power supply is disconnected by the control panel, the parallel electric fields disappear, and the charge stored in the multiple sets of positive electrode plates and multiple sets of negative electrode plates will form a charge that can be generated by electrostatic electreting. The electrostatic field adsorbs particulate matter and dust. When multiple sets of moving frame plates 6 move, four sets of scraper blocks 21 on the same side can scrape off impurities adsorbed on the surface of the horizontal plate 5. When two sets of first ball rods 20 on the same side hit the object, they can be cushioned by two sets of sliders 18 on the same side squeezing a set of telescopic springs 19 on the same side. Through the horizontal plate 5 and moving frame plates 6, the workpiece can be moved and cleaned without the need for a belt conveyor structure, ensuring the continuous use of the electrostatic dust removal device for spraying. At the same time, according to the above operation, the self-locking forward and reverse motor can be operated by using the control panel. The output end of the self-locking forward and reverse motor can drive the main gear 31 to rotate. Since the main gear 31 and the driven gear 29 mesh with each other, the rotating main gear Wheel 31 can drive driven gear 29 to rotate. The rotating driven gear 29 can rotate support plate 28 and collection box 2 through mounting shaft 27. Collection box 2 can drive dust collection box 1 to tilt. At this time, two sets of sealing plugs 33 can be pulled out, allowing impurities inside collection box 2 to be removed through a set of discharge port 32. At this time, multiple sets of movable frame plates 6 can slide along the horizontal plate 5. Using the control panel, two sets of electric telescopic rods 22 can be extended and retracted. When the two sets of second ball rods 26 contact the lower part of dust collection box 1, they play the role of supporting the tilted dust collection box 1. Two sets of return springs 24 play the role of buffering the two sets of second ball rods 26. Through the set concave frame 4, a cleaning structure is provided, which can facilitate the removal of impurities inside the collection structure, improving the practicality of the electrostatic dust removal device for spraying.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spray electrostatic precipitator device comprising a precipitator box (1), characterized in that, A collection box (2) is installed at the lower part of the dust collection box (1). A dust pump (3) is installed between the dust collection box (1) and the collection box (2). A concave frame (4) is installed below the dust collection box (1). An electrical control box is installed on one side of the concave frame (4). A control panel is installed inside the electrical control box. A horizontal plate (5) is installed inside the dust collection box (1). Multiple sets of movable frame plates (6) are slidably sleeved on the side wall of the horizontal plate (5). Multiple sets of movable rollers (7) are installed inside the multiple sets of movable frame plates (6) through bearings. Two sets of mounting blocks (8) are installed on the upper part of the multiple sets of movable frame plates (6). Mounting screws (9) are slidably passed through the opposing surfaces of the two sets of mounting blocks (8) on the same side. Clamping plates (11) are installed at the opposing ends of the two sets of mounting screws (9) on the same side. The side walls of the two sets of mounting screws (9) on the same side are all Two sets of mounting nuts (10) are fitted together. Two sets of scrapers (21) are installed on both sides of the multiple sets of movable frame plates (6). A high-pressure air pump (12) is installed on the upper part of the dust collection box (1). A jet disc (13) is installed on the inner top surface of the dust collection box (1). An air guide pipe is connected to the output end of the high-pressure air pump (12), and one end of the air guide pipe is inserted into the interior of the jet disc (13). A base box (17) is installed on the lower part of the multiple sets of movable frame plates (6). Two sets of sliders (18) are slidably installed inside the multiple sets of base boxes (17). A telescopic spring (19) is installed between the two sets of sliders (18) on the same side. A first ball rod (20) is installed on the far side of the two sets of sliders (18) on the same side. The far ends of the two sets of first ball rods (20) on the same side slide through the inner sides of the same set of movable frame plates (6).

2. A spray electrostatic precipitator according to claim 1, wherein Two sets of electric telescopic rods (22) are installed on the inner bottom surface of the concave frame (4), and a lifting box (23) is installed on the telescopic end of each set of electric telescopic rods (22). A return spring (24) is installed on the inner bottom surface of each set of lifting boxes (23), and a lifting plate (25) is installed on the upper end of each set of return springs (24). A second ball stick (26) is installed on the upper part of each set of lifting plates (25). The upper ends of the two sets of second ball sticks (26) slide through the inner top surface of the two sets of lifting boxes (23). The frame (4) has an installation shaft (27) installed inside by bearings, and a support plate (28) and a driven gear (29) are fixedly sleeved on the side wall of the installation shaft (27). The support plate (28) is fixedly connected to the lower part of the collection box (2). An installation cover (30) is installed on the end face of the concave frame (4), and a self-locking forward and reverse motor is installed on the end face of the installation cover (30). The output end of the self-locking forward and reverse motor is fixedly sleeved with a main gear (31). The two sets of electric telescopic rods (22) and the self-locking forward and reverse motor are electrically connected to the control panel through wires.

3. A spray electrostatic precipitator according to claim 2, wherein The main gear (31) meshes with the driven gear (29).

4. A spray electrostatic precipitator according to claim 2, wherein The collection box (2) has discharge ports (32) on both sides, and the two sets of discharge ports (32) are fitted with sealing plugs (33).

5. The electrostatic precipitator according to claim 1, wherein Two sets of inclined blocks (14) are installed on the bottom surface of the dust collection box (1). The input end of the dust pump (3) is connected to the first connecting pipe, and one end of the first connecting pipe is inserted into the interior of the dust collection box (1). The output end of the dust pump (3) is connected to the second connecting pipe, and one end of the second connecting pipe is inserted into the interior of the collection box (2).

6. A spray electrostatic precipitator according to claim 1 wherein, The two sets of mounting screws (9) on the same side and the four sets of mounting nuts (10) on the same side are threaded together.

7. The electrostatic precipitator according to claim 1, wherein Multiple sets of positive electrode plates and multiple sets of negative electrode plates are respectively inserted into both sides of the collection box (2). The control panel is electrically connected to the dust pump (3), the high-pressure air pump (12), the multiple sets of positive electrode plates and the multiple sets of negative electrode plates via wires.

8. The electrostatic precipitator according to claim 1, wherein The dust collector (1) has inlets (15) on both sides, and the two inlets (15) are fitted with sealing caps (16).

9. The electrostatic precipitator according to claim 1, wherein The rear end face of the collection box (2) is fixedly perforated with a breathable mesh.

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