Wet-type electrostatic environment-friendly equipment special for rolling mill of steel mill
By introducing sewage buffer housing and waste gas initial treatment housing into the wet electrostatic dust removal equipment, and using the division components and spray pipes to treat large-particle dust, the problem of excessive burden on existing equipment when dealing with large-particle dust is solved, and more efficient dust removal and environmentally friendly treatment methods are achieved.
Patent Information
- Application Number
- CN202421594438.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-08
AI Technical Summary
When existing wet electrostatic dust removal equipment deals with dust generated by steel mill rolling mills, there is a lot of large particles of dust in the initial dust gas, resulting in excessive load on the dust collector plate, affecting energy conservation and environmental protection.
A wet electrostatic environmental protection equipment for steel mill rolling mills is designed, including sewage buffer shell, waste gas initial treatment shell and wet electrostatic dust collector. By installing a segmentation assembly and a spray pipe in the sewage buffer housing, the gas is first divided and filtered to reduce the content of large particulate dirt, and then the gas enters the wet electrostatic precipitator for treatment.
It effectively reduces the burden of large-particle dust treated by wet electrostatic dust collectors, reduces the energy consumption and pollution of the equipment, improves the dust removal efficiency, and achieves a higher environmental protection effect by reusing the sewage after decontamination.
Smart Images
Figure CN222918826U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of wet electrostatic dust removal, and specifically relates to a special wet electrostatic environmental protection device for steel mill rolling mills. Background Technique
[0002] The wet electrostatic dust removal device is a common air purification device used to remove particulate matter and pollutants in the air. The existing electrostatic dust removal device is provided with a cathode wire and an anode plate in the dust removal housing, and a high voltage is applied between the anode plate and the cathode wire to form a strong electric field. As the air flow enters the electric field, due to the action of the Coulomb force of the high-voltage electrostatic field, the highly adhesive particulate matter is adsorbed on the anode plate, achieving the effect of industrial tail gas dust removal and purification. During the operation of the steel mill rolling mill, a large amount of dust particulate matter will be generated. Usually, a wet electrostatic dust removal device is used to remove the dust. When the ordinary wet electrostatic dust removal equipment is in use, there are more large-particle dusts when the initial dirty gas enters the dust removal equipment, which will greatly increase the dust removal burden on the plates of the wet electrostatic dust removal equipment, and is not conducive to energy conservation and environmental protection. For this reason, we propose a special wet electrostatic environmental protection device for steel mill rolling mills. Content of the Utility Model
[0003] The utility model provides a special wet electrostatic environmental protection device for steel mill rolling mills to solve the technical problems raised in the above background technique.
[0004] To achieve the above object, the technical solution adopted by the utility model is as follows:
[0005] A special wet electrostatic environmental protection device for steel mill rolling mills, the key points are that it includes a dirty gas initial treatment housing and a wet electrostatic dust collector respectively fixedly installed on the left and right sides of the sewage buffer housing. The left and right sides of the sewage buffer housing are respectively fixedly connected with a dirty gas pipe and a sewage drain pipe communicated with its inner cavity. The inner cavity of the sewage buffer housing is communicated with the inside of the dirty gas initial treatment housing through an air inlet pipe. The inner cavity of the dirty gas initial treatment housing is communicated with the air inlet of the wet electrostatic dust collector through an air outlet pipe. A dividing component for dividing the gas is arranged in the inner cavity of the sewage buffer housing. A first particle filter screen for filtering large-particle dust in the gas is arranged in the dirty gas initial treatment housing. A spray pipe is arranged above the first particle filter screen in the dirty gas initial treatment housing. The inside of the dirty gas initial treatment housing is communicated with the inner cavity of the sewage buffer housing through a first water outlet pipe. The bottom end of the wet electrostatic dust collector is communicated with the inner cavity of the sewage buffer housing through a second water outlet pipe.
[0006] Further, the splitting component includes a partition plate fixedly connected to the left side wall inside the sewage buffer housing. A gap is formed between the right end of the partition plate and the right side wall of the inner cavity of the sewage buffer housing. The end of the sewage gas pipe located inside the sewage buffer housing is fixedly communicated with a gas splitting housing for splitting gas. A plurality of circular holes are penetrated through the outer side wall of the gas splitting housing and are distributed at intervals. The sewage gas pipe is located below the partition plate, and a plurality of impellers are respectively arranged on the upper and lower sides of the partition plate at intervals.
[0007] Further, a plurality of motors are fixedly connected to the right side of the upper end of the sewage buffer housing at intervals. The output shafts of the motors are coaxially fixedly connected with rotating shafts. The rotating shafts pass through the partition plate and are rotatably connected thereto. Impellers are coaxially fixedly assembled on the upper and lower sides of the rotating shafts respectively, and the two impellers are respectively arranged on the upper and lower sides of the partition plate.
[0008] Further, a sealing cover is inserted into the sewage buffer housing. The air inlet pipe is fixedly communicated with the sealing cover. A second particle filter screen is fixedly connected to the bottom end inside the sealing cover. An alarm device for alarming when the second particle filter screen is blocked is constructed between the second particle filter screen and the sealing cover.
[0009] Further, the alarm device includes an alarm fixedly installed on the upper end of the sealing cover. The switch of the alarm is arranged on the inner wall of the sealing cover. A triggering device for abutting against the switch is fixedly installed on the second particle filter screen. The triggering device includes a triggering housing fixedly installed on the second particle filter screen. An installation hole is penetrated through the second particle filter screen. The outer side wall of the triggering housing is fixedly installed in the installation hole of the second particle filter screen. A plugging plate is fixedly connected to the center inside the triggering housing. A limiting rod slidably penetrates through the plugging plate vertically. The bottom end of the limiting rod is fixedly connected with the plugging plate through a spring. The top end of the limiting rod is fixedly connected with a sealing plate. The limiting rod makes the sealing plate abut against the upper end of the second particle filter screen under the elastic force of the spring. A top rod is coaxially fixedly connected to the sealing plate. The top rod is arranged directly below the switch.
[0010] Further, an air equalizing plate is fixedly connected inside the sewage gas initial treatment housing and below the first particle filter plate. The spray pipe is inserted into the sewage gas initial treatment housing, and a plurality of spray heads are fixedly installed at the bottom end of the spray pipe at intervals.
[0011] Due to the adoption of the above structure, the technical progress achieved by the present utility model compared with the prior art lies in that when the present utility model works, the polluted gas enters the sewage buffer housing from the sewage pipe, and then the gas is divided by the dividing component, so that the gas is fully contacted with water, thereby increasing the filtering effect of water on large particles in the gas; the divided gas will move upward, and the gas passing through the water in the sewage buffer housing to filter large particles enters the interior of the polluted gas initial treatment housing through the air inlet pipe, is equalized by the air equalizing plate, and the large particle dirt is filtered by the first particle filter screen and sprayed by the spray pipe, so that the content of large particle dirt in the gas can be greatly reduced. Then the gas enters the wet electrostatic precipitator through the air outlet pipe, avoiding the situation that the wet electrostatic precipitator treats more large particle dust, reducing the dust removal burden on the electrode plates of the wet electrostatic precipitator. The liquid in the sewage buffer housing is discharged through the sewage drain pipe into the sewage treatment pool and reused after treatment, which can reasonably reuse the sewage after decontamination and is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, but do not constitute a limitation to the present utility model.
[0013] In the drawings:
[0014] Figure 1 is a schematic structural diagram of the present utility model;
[0015] Figure 2 is a cross-sectional view of the present utility model;
[0016] Figure 3 is Figure 2 an enlarged view of part A in
[0017] Figure 4 is a cross-sectional structural view of the connection between the second particle filter screen and the triggering device of the present utility model.
[0018] Labeled components: 1. Sewage buffer housing; 2. Sewage drain pipe; 3. Polluted gas initial treatment housing; 4. Sewage pipe; 5. Sealing cover; 6. Air inlet pipe; 7. Alarm; 8. Air outlet pipe; 9. Spray pipe; 10. Wet electrostatic precipitator; 11. Motor; 12. Impeller; 13. Partition board; 14. Air equalizing plate; 15. Nozzle; 16. First particle filter screen; 17. First water outlet pipe; 18. Gas distribution housing; 19. Second water outlet pipe; 20. Switch; 21. Second particle filter screen; 22. Triggering device; 221. Triggering housing; 222. Sealing plate; 223. Limiting rod; 224. Spring; 225. Insertion plate; 226. Thrust rod. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The preferred embodiments of the present utility model will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.
[0020] The present utility model discloses a special wet electrostatic environmental protection device for a steel mill rolling mill. As Figures 1-4 shown, it includes a dirty gas initial treatment housing 3 and a wet electrostatic precipitator 10 respectively and fixedly installed on the left and right sides of the upper end surface of the sewage buffer housing 1. The wet electrostatic precipitator 10 uses an existing device on the market, which is prior art. The left and right sides of the sewage buffer housing 1 are respectively fixedly connected with a dirty gas pipe 4 and a sewage drain pipe 2 that communicate with its inner cavity. The inner cavity of the sewage buffer housing 1 is connected to the inside of the dirty gas initial treatment housing 3 through an intake pipe 6. The inner cavity of the dirty gas initial treatment housing 3 is connected to the intake port of the wet electrostatic precipitator 10 through an outlet pipe 8. A splitting assembly is arranged in the inner cavity of the sewage buffer housing 1, and the splitting assembly is used to split the gas. A first particle filter screen 16 is arranged in the dirty gas initial treatment housing 3, and the first particle filter screen 16 is used to filter large particle dust in the gas. A spray pipe 9 is arranged in the dirty gas initial treatment housing 3 and above the first particle filter screen. A gas equalizing plate 14 is fixedly connected below the first particle filter plate in the dirty gas initial treatment housing 3. The spray pipe 9 is inserted into the inside of the dirty gas initial treatment housing 3, and a plurality of spray heads 15 are fixedly installed at the bottom end of the spray pipe 9 at intervals. The inside of the dirty gas initial treatment housing 3 is connected to the inner cavity of the sewage buffer housing 1 through a first water outlet pipe 17. The bottom end of the wet electrostatic precipitator 10 is connected to the inner cavity of the sewage buffer housing 1 through a second water outlet pipe 19. The water flowing down from the spray decontamination of the dirty gas initial treatment housing 3 and the wet electrostatic precipitator 10 respectively flows into the lower part of the inner cavity of the sewage buffer housing 1 through the first water outlet pipe 17 and the second water outlet pipe 19. The working principle and advantages of the present utility model are as follows: The dirty gas enters the sewage buffer housing 1 from the dirty gas pipe 4, and then the gas is split by the splitting assembly, so that the gas is fully contacted with water, and the filtering effect of water on large particles in the gas is increased; the split gas will move upward, and the gas filtered by the water in the sewage buffer housing 1 enters the inside of the dirty gas initial treatment housing 3 through the intake pipe 6, is equalized by the gas equalizing plate 14, and the large particle dirt in the gas is filtered by the first particle filter screen 16 and sprayed by the spray pipe 9, so that the content of large particle dirt in the gas can be greatly reduced. Then the gas enters the wet electrostatic precipitator 10 through the outlet pipe 8, avoiding the wet electrostatic precipitator 10 from handling more large particle dust, reducing the dust removal burden on the electrode plates of the wet electrostatic precipitator 10. The liquid in the sewage buffer housing 1 is discharged through the sewage drain pipe 2 into the sewage treatment pool and reused after treatment, which can reasonably reuse the decontaminated sewage and is more environmentally friendly.
[0021] As a preferred embodiment of the present utility model, the splitting assembly includes a partition plate 13 fixedly connected to the left side wall inside the sewage buffer housing 1. There is a gap formed between the right end of the partition plate 13 and the right side wall of the inner cavity of the sewage buffer housing 1. The end of the sewage gas pipe 4 located inside the sewage buffer housing 1 is fixedly communicated with a gas splitting housing 18. A plurality of circular holes are spacedly penetrated through the outer side wall of the gas splitting housing 18. The gas splitting housing 18 is used for splitting the gas. The sewage gas pipe 4 is located below the partition plate 13. A plurality of spaced impellers 12 are respectively arranged on the upper and lower sides of the partition plate 13. On the right side of the upper end of the sewage buffer housing 1, a plurality of spaced motors 11 are fixedly connected. The output shafts of the respective motors 11 are coaxially fixedly connected with rotating shafts. The rotating shafts pass through the partition plate 13 and are rotatably connected to the partition plate 13. The upper and lower sides of the rotating shafts are respectively coaxially fixedly equipped with impellers 12, and the two impellers 12 are respectively arranged on the upper and lower sides of the partition plate 13. A sealing cover 5 is inserted into the sewage buffer housing 1. An air inlet pipe 6 is fixedly communicated with the sealing cover 5. A second particle filter screen 21 is fixedly connected to the inner bottom end of the sealing cover 5. An alarm device is constructed between the second particle filter screen 21 and the sealing cover 5. The alarm device is used for alarming when the second particle filter screen 21 is blocked; in this embodiment, first, the water level inside the sewage buffer housing 1 is set. The water level inside the sewage buffer housing 1 is always above the upper end of the partition plate 13, and is 2 cm to 4 cm above the upper end of the partition plate 13 and lower than the lower end of the sealing cover 5. And the water flowing down from the initial treatment housing 3 of the sewage gas and the wet electrostatic precipitator 10 for spraying and decontamination respectively flows into the lower part of the inner cavity of the sewage buffer housing 11 through the first water outlet pipe 17 and the second water outlet pipe 19. The water flowing into and out of the sewage buffer housing 1 is in a balanced state. The sewage gas enters from the sewage gas pipe 4 and then enters the gas splitting housing 18. The gas is split through a number of circular holes on it, so that the gas is in full contact with the water, and the filtering effect of the water on large particles in the gas is increased; the split gas will move upward and be blocked by the partition plate 13, and will displace along the partition plate 13 to the gap on the right side. During the displacement process, it is stirred and split again by the rotating impeller 12, and the gas in the water at the gap is cut again by the impeller 12 at the upper end of the partition plate 13, so as to increase the full contact between the gas and the water again, and increase the filtering effect of the water on large particles in the gas; the liquid inside the sewage buffer housing 1 is discharged into the sewage treatment pool through the sewage drain pipe 2 and is reused after treatment, which can reasonably reuse the decontaminated sewage again, is more environmentally friendly, and the sewage buffer housing 1 will not have precipitation due to the rotating impeller 12 and the introduction of gas.
[0022] As a preferred embodiment of the present utility model, the alarm device includes an alarm 7 fixedly installed on the upper end of the sealing cover 5. The switch 20 of the alarm 7 is fixedly arranged on the inner wall of the sealing cover 5. A triggering device 22 is fixedly installed on the second particle filter screen 21. The triggering device 22 is used to abut against the switch 20. The triggering device 22 includes a triggering housing 221 fixed on the second particle filter screen 21. An installation hole penetrates through the second particle filter screen 21. The outer side wall of the triggering housing 221 is fixedly installed in the installation hole of the second particle filter screen 21. A plugging plate 225 is fixedly connected to the center inside the triggering housing 221. A limiting rod 223 slides vertically through the plugging plate 225. The bottom end of the limiting rod 223 is fixedly connected to the plugging plate 225 through a spring 224. The top end of the limiting rod 223 is fixedly connected with a sealing plate 222. The limiting rod 223 makes the sealing plate 222 abut against the upper end of the second particle filter screen 21 under the elastic force of the spring 224. A top rod 226 is coaxially fixedly connected to the sealing plate 222. The top rod 226 is arranged directly below the switch 20. When the second particle filter screen 21 filters, if the second particle filter screen 21 is blocked due to long-term filtration, at this time, the gas will overcome the elastic force of the spring 224, thereby lifting the sealing plate 222 to move upward, so that the top rod 226 moves upward, and presses the switch 20, thereby triggering the alarm 7 circuit to close, and giving an alarm to prompt the staff to replace or clean the second particle filter screen 21.
[0023] Finally, it should be noted that the above are only preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the scope of protection of the claims of the present utility model.
Claims
1. A wet electrostatic environmental protection device specially used for steel mill rolling mill, characterized by: The invention comprises a polluted gas initial treatment shell (3) and a wet electrostatic precipitator (10) respectively fixedly mounted on the left and right sides of a sewage buffer shell (1); the left and right sides of the sewage buffer shell (1) are respectively fixedly connected with a polluted gas inlet pipe (6) and a sewage discharge pipe (2) which are connected to the inner cavity thereof; the inner cavity of the sewage buffer shell (1) is connected to the interior of the polluted gas initial treatment shell (3) through the inlet pipe (6); the inner cavity of the polluted gas initial treatment shell (3) is connected to the air inlet of the wet electrostatic precipitator (10) through the outlet pipe (8); A dividing assembly for dividing the gas is arranged in the inner cavity, a first particle filter (16) for filtering large dust particles in the gas is arranged in the polluted gas initial treatment shell (3), a spray pipe (9) is arranged in the polluted gas initial treatment shell (3) and above the first particle filter (16), the interior of the polluted gas initial treatment shell (3) is connected to the inner cavity of the sewage buffer shell (1) through a first water outlet pipe (17), and the bottom end of the wet electrostatic precipitator (10) is connected to the inner cavity of the sewage buffer shell (1) through a second water outlet pipe (19).
2. A wet electrostatic environmental protection device for steel mill according to claim 1, characterized in that: The splitting assembly comprises a partition (13) fixedly connected to the left side wall inside the sewage buffer shell (1), a notch being formed between the right end of the partition (13) and the right side wall of the inner cavity of the sewage buffer shell (1), the end of the sewage gas inlet pipe (6) located inside the sewage buffer shell (1) being fixedly connected to a gas separation shell (18) for dividing the gas, a plurality of circular holes distributed at intervals passing through the outer side wall of the gas separation shell (18), the sewage gas inlet pipe (6) being located below the partition (13), and a plurality of impellers (12) distributed at intervals being respectively arranged on the upper and lower sides of the partition (13).
3. A wet electrostatic environmental protection device for steel mill according to claim 2, characterized in that: A plurality of spaced-apart motors (11) are fixedly connected to the right side of the upper end of the sewage buffer housing (1); the output shafts of the motors (11) are coaxially fixedly connected to a rotating shaft, the rotating shaft passes through a partition (13) and is rotatably connected thereto; impellers (12) are coaxially fixedly mounted on the upper and lower sides of the rotating shaft, and the two impellers (12) are respectively arranged on the upper and lower sides of the partition (13).
4. A wet electrostatic environmental protection device for steel mill according to claim 3, characterized in that: A sealing cover (5) is plugged into the sewage buffer housing (1), the sealing cover (5) is fixedly connected to the air inlet pipe (6), a second particle filter (21) is fixedly connected to the bottom end of the sealing cover (5), and an alarm device for alarming when the second particle filter (21) is blocked is constructed between the second particle filter (21) and the sealing cover (5).
5. A wet electrostatic environmental protection device for steel mills according to claim 4, characterized in that: The alarm device comprises an alarm (7) fixedly mounted on the upper end of the sealing cover (5); a switch (20) of the alarm (7) is arranged on the inner wall of the sealing cover (5); a trigger device (22) for contacting the switch (20) is fixedly mounted on the second particle filter (21); the trigger device (22) comprises a trigger housing (221) fixed on the second particle filter (21); a mounting hole is penetrated through the second particle filter (21); an outer side wall of the trigger housing (221) is fixedly mounted in the mounting hole of the second particle filter (21); and a trigger housing (221) is provided inside the trigger housing (221). A plug plate (225) is fixedly connected at the center, and the upper edge of the plug plate (225) slides vertically through a limit rod (223). The bottom end of the limit rod (223) and the plug plate (225) are fixedly connected via a spring (224). A sealing plate (222) is fixedly connected to the top end of the limit rod (223). Under the elastic force of the spring (224), the limit rod (223) causes the sealing plate (222) to abut against the upper end of the second particle filter (21). A top rod (226) is coaxially fixedly connected to the sealing plate (222), and the top rod (226) is arranged directly below the switch (20).
6. A wet electrostatic environmental protection device for steel mills according to claim 5, characterized in that: An air equalizing plate (14) is fixedly connected inside the waste gas initial treatment housing (3) and below the first particle filter plate. The spray pipe (9) is plugged into the waste gas initial treatment housing (3), and a plurality of spray heads (15) distributed at intervals are fixedly mounted at the bottom end of the spray pipe (9).