A self-cleaning dry electrostatic precipitator

Abstract

The utility model discloses a kind of self-cleaning dry-type electrostatic precipitators, including shell, the inside transverse of shell is passed through and is provided with dust collecting electrode, several corona poles are longitudinally arranged between the dust collecting electrode, the upper and lower ends of the shell are respectively provided with exhaust pipe, air inlet pipe and dust removal port, driving slide rail is symmetrically arranged on the inner wall of the shell, symmetrically slidingly connected with mounting seat between the driving slide rail, lifting mechanism is arranged on the mounting seat, the upper end of the lifting mechanism is provided with scraping assembly for cleaning the surface of the dust collecting electrode. The utility model is simple in structure, reasonable in design, dust particles on the surface of dust collecting electrode are cleaned by scraping, compared with mechanical vibration, secondary dust raising will not be produced, and the cleaning of dust with strong viscosity is also more thorough, can effectively prevent the generation of stubborn dust, effectively improve dust removal efficiency, avoid the occurrence of electrode corrosion and the like.

Description

Technical Field

[0001] This utility model relates to the technical field of electrostatic precipitator equipment, specifically a self-cleaning dry electrostatic precipitator. Background Technology

[0002] Dry electrostatic precipitators, as core equipment for industrial flue gas purification, are widely used in dust control in industries such as power, metallurgy, and cement. They use a high-voltage electrostatic field to charge dust particles and adsorb them onto collecting electrodes, effectively capturing fine particulate matter such as PM2.5, with a dust removal efficiency exceeding 99%. With increasingly stringent environmental emission standards, electrostatic precipitator technology is developing towards higher efficiency and energy saving, and the reliability of the electrode self-cleaning system directly affects the long-term stable operation of the equipment.

[0003] The shortcomings of existing technology: Currently, dry electrostatic precipitators mainly employ a mechanical rapping self-cleaning system. This system uses a hammer device to periodically strike the collecting plates, causing the attached dust to fall into the ash hopper due to inertia. However, this technology has significant drawbacks. First, the intense vibrations generated during rapping can resuspend the collected fine dust, creating secondary dust. Second, for highly adhesive dust (such as oil mist or high-humidity smoke), the rapping action is insufficient to completely remove the adhering layer on the plate surface, leading to long-term accumulation of stubborn ash. This not only reduces dust removal efficiency but also causes problems such as electrode corrosion. Utility Model Content

[0004] The purpose of this invention is to provide a self-cleaning dry electrostatic precipitator to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-cleaning dry electrostatic precipitator, comprising a housing, wherein a dust collection electrode is transversely arranged inside the housing, and a plurality of corona electrodes are longitudinally arranged between the dust collection electrodes; an exhaust pipe, an air inlet pipe, and a dust collection port are respectively provided at the upper and lower ends of the housing; drive slide rails are symmetrically arranged on the inner wall of the housing; mounting seats are symmetrically slidably connected between the drive slide rails; a lifting mechanism is provided on the mounting seat; and a scraping component is provided at the upper end of the lifting mechanism for cleaning the surface of the dust collection electrodes. The scraping assembly includes: An active block is provided on one side of the mounting base at the upper end of the lifting mechanism, and a driven block is provided on the other side of the mounting base. The driven block and the active block are attracted to each other at the upper end of the mounting base under the action of the lifting mechanism. An elastic sliding member is disposed on the lower end surface of the adjacent side of the active block and the driven block. A scraper is provided at the lower end of the elastic sliding member. The elastic sliding member applies a thrust to the scraper in the direction of the mounting base. An arc-shaped scraping groove is provided at the lower end of the scraper for adhering to the dust collecting electrode and scraping off the particles attached to the surface. A repulsive electromagnetic sheet is provided on the inner wall of the adjacent side of the scraper.

[0006] Preferably, the lifting mechanism includes: A telescopic rod is provided on one side of the mounting base, an active block is provided at the upper end of the telescopic rod, and a retractable corrugated tube is sleeved on the outer side of the telescopic rod. An air pump is provided at the lower end of the housing, and the air outlet of the air pump is connected to the bellows through an elastic conduit for adjusting the air pressure inside the bellows. An attracting electromagnetic block is provided, which is respectively disposed on the adjacent side of the driving block and the driven block.

[0007] Preferably, the elastic slider includes: The slide groove is formed on the lower end face of the adjacent side of the driving block and the driven block. The upper end of the scraper is slidably connected to the slide groove by a slide bar. A spring is also provided on the inner side of the slide groove to push the scraper on both sides to fit against the mounting base.

[0008] Preferably, the inner walls of the driving block, the driven block, and the scraper are all provided with ball bearings.

[0009] Preferably, the length of the outer wall of the arc-shaped scraper groove is greater than that of the inner wall.

[0010] Preferably, the lower end of the mounting base has several grooves for dust particles to pass through.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This self-cleaning dry electrostatic precipitator is equipped with a scraping component to clean dust particles from the surface of the collecting electrodes. Compared with mechanical rapping, it does not generate secondary dust and is more thorough in cleaning sticky dust. It can effectively prevent the formation of stubborn dust accumulation, effectively improve dust removal efficiency, and avoid electrode corrosion. This self-cleaning dry electrostatic precipitator features a lifting mechanism that enables synchronous control of the lifting of the active and driven blocks. The driven block moves up and down synchronously with the active block under the attraction of the electromagnetic block, avoiding equipment redundancy. Furthermore, the entire pneumatic lifting structure is not affected by dust particles compared to traditional lifting structures, making it more suitable for the actual use requirements of current electrostatic precipitators. Attached Figure Description

[0012] Figure 1 This is the overall front view of the present invention; Figure 2 This is a front view schematic diagram of the internal structure of this utility model; Figure 3 For the present utility model Figure 2 An enlarged view of point A in the diagram; Figure 4 This is a side view of the internal structure of this utility model; Figure 5 This is a schematic diagram of the lifting and lowering of the scraping component of this utility model.

[0013] In the diagram: 1. Housing; 2. Dust collection electrode; 3. Corona electrode; 4. Exhaust pipe; 5. Inlet pipe; 6. Dust removal port; 7. Drive slide rail; 8. Mounting base; 9. Lifting mechanism; 91. Telescopic rod; 92. Bellows; 93. Air pump; 94. Attracting electromagnetic block; 10. Scraping assembly; 101. Driving block; 102. Driven block; 103. Elastic sliding element; 1031. Slide groove; 1032. Spring; 104. Scraper; 105. Arc-shaped scraper groove; 106. Repulsive electromagnetic plate; 11. Ball bearing; 12. Through groove. Detailed Implementation

[0014] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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.

[0016] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integrated connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0017] 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, "several" means two or more, unless otherwise explicitly specified. Example

[0018] Please see Figure 1-5 As shown, this utility model provides a self-cleaning dry electrostatic precipitator technical solution: A self-cleaning dry electrostatic precipitator includes a housing 1. Dust collecting electrodes 2 are horizontally installed inside the housing 1. Several corona electrodes 3 are vertically installed between the dust collecting electrodes 2. An exhaust pipe 4, an air inlet pipe 5, and a dust collection port 6 are respectively opened at the upper and lower ends of the housing 1. After the gas enters the housing 1 through the air inlet pipe 5, the dust particles it carries become charged under the discharge effect of the corona electrodes 3. Subsequently, the charged dust particles are adsorbed by the dust collecting electrodes 2, and finally, the clean gas is discharged from the exhaust pipe 4. Drive rails 7 are symmetrically fixedly installed on the inner wall of the housing 1. Mounting seats 8 are symmetrically slidably connected between the drive rails 7. The drive rails 7 actively drive the mounting seats 8 to move horizontally within the housing 1. A lifting mechanism 9 is installed on the mounting seats 8, and a scraping component 10 is installed at the upper end of the lifting mechanism 9 for cleaning the surface of the dust collecting electrodes 2. The scraping assembly 10 includes an active block 101 and an elastic slider 103. The active block 101 is mounted on the upper end of the lifting mechanism 9, located on one side of the mounting base 8. A driven block 102 is movably mounted on the other side of the mounting base 8. The driven block 102 and the active block 101 are attracted to each other at the upper end of the mounting base 8 under the action of the lifting mechanism 9. The elastic slider 103 is mounted on the lower end surface of the adjacent side of the active block 101 and the driven block 102. A scraper 104 is mounted on the lower end of the elastic slider 103. The elastic slider 103 applies a thrust to the scraper 104 in the direction of the mounting base 8. An arc-shaped scraping groove 105 is provided at the lower end of the scraper 104 to conform to the dust collection electrode 2 and scrape off the particles attached to the surface. A protrusion matching the arc-shaped scraping groove 105 is provided at the upper end of the mounting base 8 to support and limit the driven block 102. A repulsive electromagnetic plate 106 is embedded in the inner wall of the adjacent side of the scraper 104.

[0019] like Figure 2 As shown, when the active block 101 is in its lowest position, the driven block 102 is in contact with the protrusion at the upper end of the mounting base 8. At this time, the highest points of the mounting base 8, the active block 101, and the driven block 102 are all lower than the dust collecting electrode 2 and the corona electrode 3, thus preventing impact when the mounting base 8 moves horizontally. The thickness of the upper plate of the mounting base 8 is the same as the thickness of the dust collecting electrode 2.

[0020] When the electrostatic precipitator needs to remove dust particles from the surface of the collecting electrode 2, the drive slide rail 7 first horizontally drives the mounting base 8 to the designated position, aligning the upper plate of the mounting base 8 with the lower end of the collecting electrode 2 to be cleaned. Figure 5 As shown, the lifting mechanism 9 then moves the active block 101 and the driven block 102 upwards above the dust collecting electrode 2. During this upward movement, the repulsive electromagnetic plate 106 is energized, causing the scraper strips 104 on both sides to not adhere to the surface of the dust collecting electrode 2 under the action of repulsion. When the highest point is reached, the repulsive electromagnetic plate 106 is de-energized, and the scraper strips 104 adhere to the surface of the dust collecting electrode 2 under the action of the elastic sliding member 103. At this time, the lifting mechanism 9 moves the active block 101 and the driven block 102 downwards. During this process, the scraper strips 104 use the arc-shaped scraping groove 105 below to scrape the dust particles on the surface of the dust collecting electrode 2 downwards until the active block 101 and the driven block 102 move to the lowest point.

[0021] The dust particles on the surface of the dust collecting electrode 2 are cleaned by scraping the scraping component 10. Compared with mechanical rapping, it does not generate secondary dust and is more thorough in cleaning sticky dust. It can effectively prevent the generation of stubborn dust accumulation, effectively improve dust removal efficiency, and avoid electrode corrosion and other problems.

[0022] The lifting mechanism 9 includes a telescopic rod 91, an air pump 93, and an electromagnet 94. The telescopic rod 91 is mounted on one side of the mounting base 8, and the driving block 101 is mounted on the upper end of the telescopic rod 91. A retractable bellows 92 is sleeved on the outer side of the telescopic rod 91, and the bellows 92 is sealed internally. The air pump 93 is mounted on the lower end of the housing 1, and the air outlet of the air pump 93 is connected to the bellows 92 through an elastic conduit to regulate the air pressure inside the bellows 92. The electromagnet 94 is mounted on the adjacent sides of the driving block 101 and the driven block 102, respectively.

[0023] When it is necessary to drive the active block 101 to move upward, the air pump 93 can be used to pressurize the bellows 92, and vice versa. As the air pressure increases, the bellows 92 extends and pushes the active block 101 to move upward. The telescopic rod 91 mainly serves to limit the lifting trajectory.

[0024] When the electromagnetic block 94 is energized, the active block 101 and the driven block 102 are tightly attracted and attached to the upper end of the mounting base 8. At the same time, when the telescopic rod 91 drives the active block 101 to move up and down, the driven block 102 will also be attracted to the other side of the dust collection electrode 2 and move up and down synchronously under the attraction of the electromagnetic block 94.

[0025] The lifting mechanism 9 enables synchronous control of the lifting of the active block 101 and the driven block 102. The driven block 102 moves up and down synchronously with the active block 101 under the attraction of the attracting electromagnetic block 94, avoiding equipment redundancy. At the same time, the entire pneumatic lifting structure is not affected by dust particles compared with the traditional lifting structure, which is more in line with the actual use requirements of current electrostatic precipitators.

[0026] The elastic sliding member 103 includes a sliding groove 1031, which is formed on the lower end face of the adjacent side of the driving block 101 and the driven block 102. The upper end of the scraper 104 is slidably connected to the sliding groove 1031 by the sliding groove. A spring 1032 is also installed on the inner side of the sliding groove 1031 to push the scrapers 104 on both sides to fit against the mounting base 8.

[0027] Roller balls 11 are provided on the inner sidewalls of the active block 101, driven block 102 and scraper 104. When the active block 101, driven block 102 and scraper 104 move up and down in contact with the dust collection electrode 2, the roller balls 11 can significantly reduce the sliding friction.

[0028] The outer wall of the arc-shaped scraper groove 105 is longer than the inner wall, which can effectively prevent dust particles from falling to the outside when scraping downwards.

[0029] The mounting base 8 has several channels 12 on its lower end for dust particles to pass through. After dust particles fall onto the mounting base 8, they fall through the channels 12, reducing dust accumulation on the surface of the mounting base 8.

[0030] The working principle of this utility model is as follows: When the electrostatic precipitator needs to remove dust particles from the surface of the collecting electrode 2, the attracting electromagnetic block 94 is first energized, causing the driving block 101 and driven block 102 to adhere tightly to each other. Next, the drive slide rail 7 horizontally drives the mounting base 8 to a designated position, aligning the upper plate of the mounting base 8 with the lower end of the collecting electrode 2 to be cleaned. Then, the repulsive electromagnetic plate 106 is energized, causing the scraper strips 104 on both sides to overcome the elasticity of the spring 1032 and separate from the surface of the collecting electrode 2, maintaining a certain distance. Finally, the air pump 93 pressurizes the bellows 92, pushing the driving block 101 and driven block 102 synchronously upwards above the collecting electrode 2. Once the highest point is reached, the repulsive electromagnetic plate 106 is de-energized, and the scraper 104 adheres to the surface of the dust collection electrode 2 under the elastic force of the spring 1032. At this time, the pressure inside the bellows 92 is released by the air pump 93, which allows the active block 101 and the driven block 102 to move downward under the action of gravity. During this process, the scraper 104 uses the arc-shaped scraper groove 105 below to scrape the dust particles on the surface of the dust collection electrode 2 downward until the active block 101 and the driven block 102 move to the lowest point. At this time, the drive slide rail 7 drives the mounting base 8 to move horizontally to the bottom of the next dust collection electrode 2 to continue scraping the dust particles.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning dry electrostatic precipitator, comprising a housing (1), wherein a dust collecting electrode (2) is transversely arranged inside the housing (1), and a plurality of corona electrodes (3) are longitudinally arranged between the dust collecting electrodes (2), and an exhaust pipe (4), an air inlet pipe (5), and a dust collection port (6) are respectively provided at the upper and lower ends of the housing (1), characterized in that: The inner wall of the housing (1) is symmetrically provided with drive slide rails (7), and the drive slide rails (7) are symmetrically slidably connected with mounting bases (8). The mounting bases (8) are provided with lifting mechanisms (9), and the upper end of the lifting mechanisms (9) is provided with scraping components (10) for cleaning the surface of the dust collection electrode (2). The scraping assembly (10) includes: An active block (101) is located on one side of the mounting base (8) at the upper end of the lifting mechanism (9). A driven block (102) is provided on the other side of the mounting base (8). The driven block (102) and the active block (101) are attracted to each other at the upper end of the mounting base (8) under the action of the lifting mechanism (9). An elastic slider (103) is disposed on the lower end surface of the adjacent side of the active block (101) and the driven block (102). A scraper (104) is provided at the lower end of the elastic slider (103). The elastic slider (103) applies a thrust to the scraper (104) in the direction of the mounting base (8). An arc-shaped scraping groove (105) is provided at the lower end of the scraper (104) for adhering to the dust collecting electrode (2) to scrape off the particles attached to the surface. A repulsive electromagnetic plate (106) is provided on the inner wall of the adjacent side of the scraper (104).

2. The self-cleaning dry electrostatic precipitator according to claim 1, characterized in that: The lifting mechanism (9) includes: Telescopic rod (91), the telescopic rod (91) is disposed on one side of the mounting base (8), the active block (101) is disposed at the upper end of the telescopic rod (91), and a retractable corrugated tube (92) is sleeved on the outer side of the telescopic rod (91). An air pump (93) is located at the lower end of the housing (1). The air outlet of the air pump (93) is connected to the bellows (92) through an elastic conduit to regulate the air pressure inside the bellows (92). An attracting electromagnetic block (94) is provided, which is respectively disposed on the adjacent side of the active block (101) and the driven block (102).

3. The self-cleaning dry electrostatic precipitator according to claim 1, characterized in that: The elastic slider (103) includes: The slide groove (1031) is formed on the lower end face of the adjacent side of the active block (101) and the driven block (102). The upper end of the scraper (104) is slidably connected to the slide groove (1031) by the slide groove. The inner side of the slide groove (1031) is also provided with a spring (1032) for pushing the scraper (104) on both sides to fit against the mounting base (8).

4. The self-cleaning dry electrostatic precipitator according to claim 1, characterized in that: The inner walls of the active block (101), the driven block (102), and the scraper (104) are all provided with ball bearings (11).

5. The self-cleaning dry electrostatic precipitator according to claim 1, characterized in that: The outer wall of the arc-shaped scraper groove (105) is longer than the inner wall.

6. The self-cleaning dry electrostatic precipitator according to claim 1, characterized in that: The mounting base (8) has several through slots (12) on its lower end for dust particles to pass through.

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