A wet electrostatic precipitator with scraper

Abstract

This utility model discloses a wet electrostatic precipitator with a scraper, including a body, a dust removal module, a self-cleaning module, and a sludge removal module. The dust removal module is equipped with a lower air chamber, an upper air chamber, an anode tube, and a cathode wire. After the cathode wire is energized by a high-voltage DC electric field, particulate impurities such as dust and oil mist will become charged when the exhaust gas flows from the lower air chamber through the anode tube to the upper air chamber, and then be captured by the anode tube. The self-cleaning module uses a spray pipe to spray the upper air chamber, thereby washing the waste residue adhering to the air chamber or anode tube to the lower air chamber. A sludge collection tank is used to collect this sludge, which flows from the sludge collection tank to the sludge scraping groove of the sludge removal module. The sludge removal module uses a scraper that can repeatedly scrape the sludge in the scraping groove to automatically scrape off the sludge. This avoids the reduction in dust removal efficiency caused by scaling inside the anode tube, and achieves the effect of automatic sludge removal of the dust collector, which greatly saves the cost of equipment maintenance and sludge cleaning.

Description

Technical Field

[0001] This utility model relates to the field of industrial dust removal equipment technology, and in particular to a wet electrostatic precipitator with a scraper. Background Technology

[0002] Wet electrostatic precipitators, as key equipment for the final fine treatment of air pollution, are widely used in industrial fields such as coal-fired power plants, steel sintering, and waste incineration due to their high efficiency in capturing pollutants such as fine particulate matter (PM2.5), acid mist, and aerosols. Traditional wet electrostatic precipitators charge dust particles using a high-voltage electrostatic field, which is then captured and collected on the collecting electrode. The captured dust is removed by a continuously flowing water film on the electrode surface, forming a slurry. However, the slurry from existing wet electrostatic precipitators accumulates and concentrates in the sedimentation tank or ash hopper, requiring shutdown and dedicated personnel for cleaning, which greatly reduces the equipment's capacity. Furthermore, the harsh cleaning environment and the corrosive, toxic, and harmful slurry pose occupational health risks to workers, violating the principle of safe production. Therefore, there is an urgent need for a wet electrostatic precipitator with automatic slurry cleaning capabilities. Utility Model Content

[0003] The purpose of this invention is to provide a wet electrostatic precipitator with a scraper, which solves the problem that existing wet electrostatic precipitators lack automatic slag removal function.

[0004] The present invention provides the following technical solution: a wet electrostatic precipitator with a scraper, comprising a body, a dust removal module, a self-cleaning module, and a slag removal module disposed in the body. The dust removal module includes a lower air chamber, an upper air chamber, an anode tube, and a cathode wire. Multiple anode tubes are connected between the lower air chamber and the upper air chamber. The cathode wire passes through the corresponding anode tube along the axial direction of the anode tube, forming a collection area between the inner wall of the anode tube and the cathode wire. The self-cleaning module includes a spray pipe and a sludge collection tank. The spray pipe is disposed in the upper air chamber, and the sludge collection tank is disposed on the lower side of the lower air chamber. The slag removal module includes a slag scraping trough, a scraper, and a slag scraping driver. The slag scraping trough is located on one side of the sludge collection tank, and the slag scraping driver drives the scraper to circulate along the length of the slag scraping trough.

[0005] As described above, in a wet electrostatic precipitator with scrapers, the bottom of the sludge collection tank is inclined towards the scraping tank. The sludge cleaning module further includes a drive sprocket, a driven sprocket, and a chain. The drive sprocket is connected to the output end of the scraping drive. The driven sprocket is rotatably located on the side of the scraping tank away from the drive sprocket. The chain is meshed between the drive sprocket and the driven sprocket. The scrapers are multiple scrapers fixed to the chain.

[0006] As described above, in a wet electrostatic precipitator with a scraper, the slag removal module further includes a slag discharge basin, which is detachably disposed on one side of the scraper trough. When the scraper moves close to the bottom of the scraper trough, it gradually approaches the slag discharge basin.

[0007] The wet electrostatic precipitator with scraper described above, wherein the scraper is made of PTFE or UHMWPE.

[0008] As described above, in a wet electrostatic precipitator with a scraper, multiple spray pipes are arranged inside the upper side of the upper air chamber, and each spray pipe is equipped with multiple spray heads.

[0009] As described above, in a wet electrostatic precipitator with a scraper, the spray head is a spiral atomizing nozzle.

[0010] As described above, in a wet electrostatic precipitator with a scraper, a drain outlet is provided on the lower side of the lower air chamber, and the bottom of the lower air chamber is inclined toward the drain outlet on the periphery of the drain outlet.

[0011] As described above, a wet electrostatic precipitator with a scraper has an air inlet on the side of the lower air chamber, an air distribution pipe between the air inlet and the inner cavity of the lower air chamber, and an exhaust port on the top of the upper air chamber.

[0012] As described above, a wet electrostatic precipitator with a scraper includes a dust removal module that further includes observation and maintenance ports located on the sides of the lower and upper air chambers.

[0013] As described above, a wet electrostatic precipitator with a scraper includes a dust removal module that further comprises a lower conductive frame, an upper conductive frame, and an insulating ceramic component. The lower conductive frame is connected and fixed to the lower air chamber via the insulating ceramic component, and the upper conductive frame is connected and fixed to the upper air chamber via the insulating ceramic component. The two ends of the cathode wire are respectively connected to the lower conductive frame and the upper conductive frame.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] This utility model discloses a wet electrostatic precipitator with a dust removal module installed in the machine body, and incorporates a self-cleaning module and a sludge removal module. The dust removal module consists of a lower air chamber, an upper air chamber, an anode tube, and a cathode wire. When the cathode wire is energized by a high-voltage DC electric field, particulate impurities such as dust and oil mist become charged as the exhaust gas flows from the lower air chamber through the anode tube to the upper air chamber, and is then captured by the anode tube. The self-cleaning module uses a spray pipe to spray the upper air chamber, forming a water film, which washes the waste residue adhering to the air chamber or anode tube to the lower air chamber. A sludge collection tank collects this sludge, which flows from the collection tank to the sludge scraping groove of the sludge removal module. The sludge removal module uses a scraper that can repeatedly scrape the sludge in the scraping groove to automatically scrape off the sludge. This avoids the reduction in dust removal efficiency caused by scaling inside the anode tube, and achieves the effect of automatic sludge removal of the dust collector, greatly saving the cost of equipment maintenance and sludge cleaning. Attached Figure Description

[0016] Figure 1 This is a cross-sectional perspective view of the wet electrostatic precipitator of this utility model.

[0017] Figure 2 This is a partial cross-sectional perspective view of the wet electrostatic precipitator of this utility model.

[0018] Figure 3 This is a three-dimensional schematic diagram of the wet electrostatic precipitator of this utility model.

[0019] Explanation of reference numerals in the attached diagram: 1. Body; 2. Dust removal module; 3. Self-cleaning module; 4. Slag removal module; 21. Lower air chamber; 22. Upper air chamber; 23. Anode tube; 24. Cathode wire; 25. Collection area; 26. Observation and maintenance port; 27. Lower conductive frame; 28. Upper conductive frame; 29. ​​Insulating ceramic component; 31. Spray pipe; 32. Sludge collection tank; 41. Slag scraping tank; 42. Scraper; 43. Slag scraping driver; 44. Drive sprocket; 45. Driven sprocket; 46. Chain; 47. Slag discharge basin; 211. Drain outlet; 212. Air inlet; 213. Air distribution pipe; 221. Exhaust outlet; 311. Spray head. 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. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. 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.

[0021] Example 1: Please refer to the appendix Figure 1 To be continued Figure 3This embodiment provides a wet electrostatic precipitator with a scraper, including a body 1, a dust removal module 2, a self-cleaning module 3, and a slag removal module 4 disposed on the body 1. The dust removal module 2 includes a lower air chamber 21, an upper air chamber 22, an anode tube 23, and a cathode wire 24. Multiple anode tubes 23 are connected between the lower air chamber 21 and the upper air chamber 22. The cathode wire 24 passes through the corresponding anode tube 23 along the axial direction of the anode tube 23, so that a collection area 25 is formed between the inner wall of the anode tube 23 and the cathode wire 24. The self-cleaning module 3 includes a spray pipe 31 and a sludge collection tank 32. The spray pipe 31 is disposed in the upper air chamber 22, and the sludge collection tank 32 is disposed on the lower side of the lower air chamber 21. The slag removal module 4 includes a slag scraping groove 41, a scraper 42, and a slag scraping driver 43. The slag scraping groove 41 is located on one side of the sludge collection tank 32, and the slag scraping driver 43 drives the scraper 42 to circulate along the length direction of the slag scraping groove 41. In this embodiment of the wet electrostatic precipitator, a dust removal module 2 is installed in the body 1, and a self-cleaning module 3 and a slag removal module 4 are incorporated in a coordinated design. The dust removal module 2 is equipped with a lower air chamber 21, an upper air chamber 22, an anode tube 23, and a cathode wire 24. After the cathode wire 24 is energized by a high-voltage DC electric field, particulate impurities such as dust and oil mist will become charged when the exhaust gas flows from the lower air chamber 21 through the anode tube 23 to the upper air chamber 21, and then be captured by the anode tube 23. The self-cleaning module 3 uses a spray pipe 31 to clean the upper air chamber 22. The system sprays water to flush the waste residue adhering to the gas chamber or anode tube 23 to the lower gas chamber 21. The sludge is collected by the collection tank 32 and flows from the collection tank 32 to the scraping groove 41 of the cleaning module 4. The cleaning module 4 uses a scraper 42 that can repeatedly scrape the scraping groove 41 to automatically scrape the sludge. This avoids the reduction in dust removal efficiency caused by scaling inside the anode tube 23, and achieves the effect of automatic sludge removal of the dust collector, which greatly saves the cost of equipment maintenance and sludge cleaning.

[0022] The bottom of the sludge collection tank 32 is inclined towards the scraping trough 41. The sludge cleaning module 4 also includes a drive sprocket 44, a driven sprocket 45 and a chain 46. The drive sprocket 44 is connected to the output end of the scraping drive 43. The driven sprocket 45 is rotatably located on the side of the scraping trough 41 away from the drive sprocket 44. The chain 46 is meshed between the drive sprocket 44 and the driven sprocket 45. The scraper 42 consists of multiple scrapers fixed on the chain 46, which further improves the scraping efficiency of the sludge cleaning module 4.

[0023] The slag removal module 4 also includes a slag discharge basin 47, which is detachably mounted on one side of the slag scraping trough 41. As the scraper 42 moves closer to the bottom of the trough 41, it gradually approaches the slag discharge basin 47. The slag discharge basin 47 facilitates the transfer and handling of the sludge scraped by the scraper 42.

[0024] The scraper 42 is made of PTFE or UHMWPE, which has the characteristics of corrosion resistance and low friction.

[0025] Multiple spray pipes 31 are arranged inside the upper air chamber 22, and each spray pipe 31 is equipped with multiple spray heads 311, so that the spray liquid can be sprayed evenly into the upper air chamber 22.

[0026] The spray head 311 is a spiral atomizing nozzle, which can further improve the spray coverage of the spray liquid in the upper air chamber 22.

[0027] The lower air chamber 21 is provided with a drain outlet 211 on its lower side. The bottom of the lower air chamber 21 is inclined towards the drain outlet 211 on its periphery, so that the sludge can flow into the sludge collection tank 32 through the drain outlet 211 when it falls into the lower air chamber 21.

[0028] An air inlet 212 is provided on the side of the lower air chamber 21, and an air distribution pipe 213 is provided between the air inlet 212 and the inner cavity of the lower air chamber 21. An exhaust port 221 is provided on the top of the upper air chamber 22. The air distribution pipe 213 can disperse the exhaust gas flow entering the lower air chamber 21 and distribute the airflow as evenly as possible to each anode tube 23.

[0029] The dust removal module 2 also includes observation and maintenance ports 26 on the sides of the lower air chamber 21 and the upper air chamber 22, which facilitate the observation of the internal condition of the lower air chamber 21 or the upper air chamber 22 during maintenance.

[0030] The dust removal module 2 also includes a lower conductive frame 27, an upper conductive frame 28, and an insulating ceramic component 29. The lower conductive frame 27 is connected and fixed in the lower air chamber 21 through the insulating ceramic component 29, and the upper conductive frame 28 is connected and fixed in the upper air chamber 22 through the insulating ceramic component 29. The two ends of the cathode wire 24 are respectively connected to the lower conductive frame 27 and the upper conductive frame 28. This ensures stable power supply to the cathode wire 24 while preventing the shell surface of the machine body 1 from becoming conductive, thus improving safety.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wet electrostatic precipitator with a scraper, characterized in that: The system includes a body (1), a dust removal module (2), a self-cleaning module (3), and a slag removal module (4) disposed on the body (1). The dust removal module (2) includes a lower air chamber (21), an upper air chamber (22), an anode tube (23), and a cathode wire (24). Multiple anode tubes (23) are connected between the lower air chamber (21) and the upper air chamber (22). The cathode wire (24) passes through the corresponding anode tube (23) along the axial direction of the anode tube (23), so that the inner wall of the anode tube (23) and the cathode wire (24) form a gap. The self-cleaning module (3) includes a spray pipe (31) and a sludge collection tank (32). The spray pipe (31) is located in the upper air chamber (22), and the sludge collection tank (32) is located on the lower side of the lower air chamber (21). The sludge cleaning module (4) includes a sludge scraping trough (41), a scraper (42), and a sludge scraping driver (43). The sludge scraping trough (41) is located on one side of the sludge collection tank (32), and the sludge scraping driver (43) drives the scraper (42) to circulate along the length of the sludge scraping trough (41).

2. A wet electrostatic precipitator with scraper according to claim 1, characterized in that: The bottom of the sludge collection tank (32) is inclined toward the scraper trough (41). The sludge cleaning module (4) also includes a drive sprocket (44), a driven sprocket (45), and a chain (46). The drive sprocket (44) is connected to the output end of the scraper driver (43). The driven sprocket (45) is rotatably located on the side of the scraper trough (41) away from the drive sprocket (44). The chain (46) is meshed between the drive sprocket (44) and the driven sprocket (45). The scraper (42) consists of multiple scrapers fixed to the chain (46).

3. A wet electrostatic precipitator with scraper according to claim 2, characterized in that: The slag removal module (4) also includes a slag discharge basin (47), which is detachably disposed on one side of the slag scraping trough (41). When the scraper (42) moves close to the bottom of the slag scraping trough (41), it gradually approaches the slag discharge basin (47).

4. A wet electrostatic precipitator with scraper according to claim 2, characterized in that: The scraper (42) is made of PTFE or UHMWPE.

5. A wet electrostatic precipitator with scraper according to claim 1, characterized in that: The spray pipes (31) are arranged in multiple rows on the upper side of the upper air chamber (22), and each spray pipe (31) is provided with multiple spray heads (311).

6. A wet electrostatic precipitator with scraper according to claim 5, characterized in that: The spray head (311) is a spiral atomizing spray head.

7. A wet electrostatic precipitator with scraper according to claim 5, characterized in that: The lower air chamber (21) is provided with a drain outlet (211) on its lower side, and the bottom of the lower air chamber (21) is inclined toward the drain outlet (211) on the periphery of the drain outlet (211).

8. A wet electrostatic precipitator with scraper according to claim 7, characterized in that: An air inlet (212) is provided on the side of the lower air chamber (21), and a uniform air distribution pipe (213) is provided between the air inlet (212) and the inner cavity of the lower air chamber (21). An exhaust port (221) is provided on the top of the upper air chamber (22).

9. A wet electrostatic precipitator with scraper according to claim 8, characterized in that: The dust removal module (2) also includes observation and maintenance ports (26) located on the sides of the lower air chamber (21) and the upper air chamber (22).

10. A wet electrostatic precipitator with scraper according to claim 1, characterized in that: The dust removal module (2) further includes a lower conductive frame (27), an upper conductive frame (28), and an insulating ceramic component (29). The lower conductive frame (27) is connected and fixed in the lower air chamber (21) through the insulating ceramic component (29), and the upper conductive frame (28) is connected and fixed in the upper air chamber (22) through the insulating ceramic component (29). The two ends of the cathode wire (24) are respectively connected to the lower conductive frame (27) and the upper conductive frame (28).

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