Flue gas filtering device for boiler

Abstract

The flue gas filtering device comprises a dust removal box, a flue gas outlet is formed in the upper side of the dust removal box, a flue gas inlet is formed in the bottom side of the dust removal box, a corona electrode is fixedly connected to one side in the dust removal box, first grooves are formed in the two sides of the dust removal box, and a first motor is fixedly connected to the side, located in the first grooves, of the dust removal box; a rotating rod is fixedly connected to the output end of the first motor, a dust collecting plate is fixedly connected to the rotating rod, a second motor is fixedly connected to the position, located at the upper end of the dust collecting plate, of the dust removing box, a screw is fixedly connected to the output end of the second motor, moving blocks are in threaded connection with the screw, and a water collecting pipe is fixedly connected between the two opposite moving blocks; according to the utility model, the rotatable dust collection plates are arranged on the two sides of the dust removal box, and high-pressure water can be generated to treat sulfur-containing and nitrate-containing particles adhered to the dust collection plates in cooperation with the water collection pipe capable of moving up and down and the spray head, so that the adhered sulfur-containing and nitrate-containing dust is treated, and the dust collection effect of the dust collection plates is improved.

Description

Technical Field

[0001] This utility model relates to the field of boiler flue gas filtration technology, specifically to a flue gas filtration device for boilers. Background Technology

[0002] Flue gas filtration is a crucial step in boiler flue gas treatment, primarily aimed at removing pollutants such as particulate matter, sulfur dioxide, and nitrogen oxides to meet environmental emission standards. In the flue gas treatment process, dust collectors are typically used first to remove dust particles from the flue gas before it enters a desulfurization tower and undergoes SNCR (Synthetic Electrostatic Reduction) technology for desulfurization and denitrification. When the flue gas enters the electrostatic precipitator, sulfur- and nitrate-containing dust particles easily adhere to the dust collection plates, causing adhesion and making cleaning difficult.

[0003] According to the Chinese patent publication CN218310294U, "A Deep Drawing Stamping Die," the main feature is the addition of a flue gas cleaning mechanism. This mechanism utilizes spraying, a lower inclined cylinder, a vertical cylinder, an upper inclined cylinder, and a collection mechanism to avoid frequent disassembly and cleaning of the flue. Because the flue gas is initially filtered, the content of large dust particles in the flue gas entering the dust removal equipment is reduced, thus reducing the need for frequent cleaning of the dust removal equipment and ensuring normal production operations, thereby avoiding impacting the company's profits. However, during this process, the flue gas contains sulfur- and nitrate-containing dust particles that will adhere to the dust collection plate during electrostatic dust removal, affecting the electrostatic dust removal effect.

[0004] Therefore, a flue gas filtration device for boilers is proposed to solve the problem that sulfur- and nitrate-containing dust particles in the flue gas will stick to the dust collection plate during electrostatic precipitator, affecting the electrostatic precipitator effect. Utility Model Content

[0005] The technical problem to be solved by this utility model is that, in this process, the flue gas contains sulfur- and nitrate-containing dust particles, which will stick to the dust collection plate during electrostatic dust removal, affecting the electrostatic dust removal effect. Therefore, a flue gas filtration device for boilers is proposed.

[0006] The technical solution adopted by this utility model to solve the technical problem is as follows: a flue gas filtration device for boilers, including a dust collection box, a flue gas outlet on the upper side of the dust collection box, a flue gas inlet on the bottom side of the dust collection box, a corona electrode fixedly connected to one side inside the dust collection box, first grooves on both sides of the dust collection box, a first motor fixedly connected to one side of the dust collection box located in the first groove, a rotating rod fixedly connected to the output end of the first motor, a dust collection plate fixedly connected to the rotating rod, a second motor fixedly connected to the upper part of the dust collection plate of the dust collection box, a screw fixedly connected to the output end of the second motor, a moving block threadedly connected to the screw, a water collection pipe fixedly connected between two opposing moving blocks, nozzles evenly fixedly connected to one side of the water collection pipe, a telescopic hose fixedly connected to one side of the water collection pipe, a water pump fixedly connected to one end of the telescopic hose, and the water pump fixedly connected to both sides of the dust collection box.

[0007] As a preferred technical solution of this utility model, the dust collection box has limit holes on both the upper and lower sides of the first groove. A spring rod is fixedly connected in the limit hole, and a retaining strip is fixedly connected to one end of the spring rod, and the retaining strip corresponds to the dust collection plate. By setting the spring rod and the retaining strip, the smoke can be prevented from overflowing from the first groove by contacting the dust collection plate.

[0008] As a preferred technical solution of this utility model, a sealing strip is glued to the side of the card strip away from the spring rod and the sealing strip is in contact with the dust collection plate. The sealing strip is made of rubber material, and the sealing performance between the card strip and the dust collection plate is increased by setting the sealing strip.

[0009] As a preferred technical solution of this utility model, one side of the dust collection plate is in contact with an electric telescopic rod, which is fixedly connected inside the dust collection box. By having the end of the electric telescopic rod contact the dust collection box, the stability of the dust collection plate can be improved.

[0010] As a preferred technical solution of this utility model, a guide cover is fixedly connected to the bottom side of the dust collection box, and a through hole is opened on one side of the guide cover. By setting the guide cover and the through hole, the cleaning water can be collected uniformly.

[0011] This utility model has the following advantages: by setting rotatable dust collection plates on both sides of the dust collection box, and then cooperating with water collection pipes and nozzles that can move up and down, high-pressure water can be generated to treat the sulfur and nitrate particles adhering to the dust collection plates, thereby achieving the treatment of the adhering sulfur and nitrate dust and improving the dust collection effect of the dust collection plates. Attached Figure Description

[0012] Figure 1 This is a side sectional view of a preferred embodiment of the flue gas filtration device for a boiler.

[0013] Figure 2 This is a three-dimensional structural schematic diagram of a flue gas filtration device for a boiler according to a preferred embodiment of the present invention.

[0014] Figure 3 This is an enlarged structural diagram of point A of a flue gas filtration device for a boiler, according to a preferred embodiment of this utility model.

[0015] Explanation of reference numerals in the attached drawings: 1. Dust collector; 2. Smoke outlet; 3. Smoke inlet; 4. Corona electrode; 5. First groove; 6. Rotating rod; 7. Dust collection plate; 8. Second motor; 9. Screw; 10. Moving block; 11. Water collection pipe; 12. Nozzle; 13. Telescopic hose; 14. Water pump; 15. Limiting hole; 16. Spring rod; 17. Locking strip; 18. Sealing strip; 19. Electric telescopic rod; 20. Guide cover. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Please refer to the following: Figure 1-3 The illustrated flue gas filtration device for a boiler includes a dust collector 1. A flue gas outlet 2 is located on the upper side of the dust collector 1, and a flue gas inlet 3 is located on the bottom side. A rotatable sealing plate is installed inside the flue gas inlet 3, which can close the dust collector 1 when the dust collection plate 7 rotates. A corona electrode 4 is fixedly connected to one side of the dust collector 1. The corona electrode 4 is connected to an external high-voltage power supply, and by generating corona discharge, a high-voltage electrostatic field is formed with the dust collection plate 7. First grooves 5 are provided on both sides of the dust collector 1. A first motor is fixedly connected to one side of the dust collector 1 located in the first groove 5. A rotating rod 6 is fixedly connected to the output end of the first motor. The dust collection plate 7 is fixedly connected to the rotating rod 6. A striking device is provided on one side of the dust collection plate 7, which causes dust to fall off and collect from the bottom side of the flue gas inlet 3. The dust collector 1 is located on the upper end of the dust collection plate 7 and is fixedly connected to a second motor 8. The second motor 8 drives the screw 9 to rotate, which enables the moving block 10 and the water collection pipe 11 to move up and down, so that the nozzle 12 can clean different positions on the dust collection plate 7, avoiding the problem of sulfur and nitrate dust particles sticking to the dust collection plate 7. The output end of the second motor 8 is fixedly connected to the screw 9, and the moving block 10 is threadedly connected to the screw 9. The water collection pipe 11 is fixedly connected between two opposite moving blocks 10. The nozzles 12 are evenly fixedly connected to one side of the water collection pipe 11. The telescopic hose 13 is fixedly connected to one side of the water collection pipe 11. The water pump 14 is fixedly connected to one end of the telescopic hose 13. The water pump 14 is connected to an external water source and is fixedly connected to both sides of the dust collector 1.

[0018] The dust collection plate 7 corresponds to the locking strip 17. The locking strip 17 is fixedly connected to one end of the spring rod 16. The spring rod 16 is fixedly connected to the limiting hole 15. The limiting hole 15 is located on the upper and lower sides of the first groove 5. The first groove 5 is located in the dust collection box 1. By setting the spring rod 16 and the locking strip 17 in the first groove 5, the dust collection plate 7 can be limited to prevent dust from overflowing.

[0019] The dust collection plate 7 is in contact with the sealing strip 18. The sealing strip 18 is glued to the side of the clip 17 away from the spring rod 16. The sealing strip 18 is made of rubber. By setting the sealing strip 18, the sealing between the dust collection plate 7 and the clip 17 is increased.

[0020] The dust collection box 1 is fixedly connected to an electric telescopic rod 19, which contacts one side of the dust collection plate 7. The dust collection plate 7 is limited by extending the end of the electric telescopic rod 19, thereby improving the stability of the dust collection plate 7.

[0021] The through hole is located on one side of the guide cover 20, which is fixedly connected to the bottom side of the dust collector 1. By setting the guide cover 20, sulfur-containing and nitrate-containing dust adhering to the dust collection plate 7 can be collected and cleaned.

[0022] Working principle: Flue gas enters through the inlet 3, and a high-voltage electrostatic field is formed between the corona electrode 4 and the dust collection plate 7. Dust particles and sulfur- and nitrate-containing dust particles adhere to the dust collection plate 7. Then, the flue gas rises after dust removal and overflows from the outlet 2. After dust collection time at one end of the dust collection plate 7, the inlet 3 is sealed with a sealing plate. Then, the dust collection plate 7 is struck by a knocking structure to dislodge the dust. The sealing plate is then closed, and the first motor is started to make the dust collection plate 7 rotate. At this time, the sulfur- and nitrate-containing dust adhering to the dust collection plate 7 is located outside the dust collection box 1. At this time, the water pump 14 is started to draw water from the external source and supply water to the water collection pipe 11 through the telescopic hose 13. Then, the nozzle 12 sprays high-pressure water onto the dust collection plate 7, thereby causing the sulfur- and nitrate-containing dust to fall off, reducing the adhesion of sulfur- and nitrate-containing dust, and improving the subsequent boiler flue gas filtration efficiency.

[0023] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0024] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A flue gas filtration device for a boiler, comprising a dust collector (1), wherein a flue gas outlet (2) is provided on the upper side of the dust collector (1), and a flue gas inlet (3) is provided on the bottom side of the dust collector (1), characterized in that, A corona electrode (4) is fixedly connected to one side of the dust collector (1). A first groove (5) is provided on both sides of the dust collector (1). A first motor is fixedly connected to one side of the dust collector (1) located in the first groove (5). A rotating rod (6) is fixedly connected to the output end of the first motor. A dust collection plate (7) is fixedly connected to the rotating rod (6). A second motor (8) is fixedly connected to the upper end of the dust collection plate (7) of the dust collector (1). A screw (9) is fixedly connected to the output end of the second motor (8). A moving block (10) is threadedly connected to the screw (9). A water collection pipe (11) is fixedly connected between two opposing moving blocks (10). A nozzle (12) is evenly fixedly connected to one side of the water collection pipe (11). A telescopic hose (13) is fixedly connected to one side of the water collection pipe (11). A water pump (14) is fixedly connected to one end of the telescopic hose (13). The water pump (14) is fixedly connected to both sides of the dust collector (1).

2. The flue gas filtration device for a boiler as described in claim 1, characterized in that, The dust collection box (1) has limit holes (15) on both the upper and lower sides of the first groove (5). A spring rod (16) is fixedly connected in the limit hole (15). A retaining strip (17) is fixedly connected to one end of the spring rod (16) and the retaining strip (17) corresponds to the dust collection plate (7).

3. A flue gas filtration device for a boiler as described in claim 2, characterized in that, The card strip (17) is glued to the side away from the spring rod (16) with a sealing strip (18) and the sealing strip (18) is in contact with the dust collection plate (7). The sealing strip (18) is made of rubber.

4. A flue gas filtration device for a boiler as described in claim 3, characterized in that, One side of the dust collection plate (7) is in contact with an electric telescopic rod (19), which is fixedly connected inside the dust collection box (1).

5. A flue gas filtration device for a boiler as described in claim 4, characterized in that, The dust collector (1) is fixedly connected to a guide cover (20) on its bottom side, and a through hole is provided on one side of the guide cover (20).

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