Wind power type demisting device

Abstract

The invention discloses a wind power type demisting device which comprises a demisting tower, a first rotational flow plate and a second rotational flow plate, a pressurizing cavity is formed in the side wall of the demisting tower, an air blower is arranged on the outer side of the pressurizing cavity, a wind power scraping and sweeping mechanism is arranged on the second rotational flow plate, and a rotational flow plate support is arranged in the demisting tower. The first rotational flow plate and the second rotational flow plate are installed on the rotational flow plate support and rotationally connected with the rotational flow plate support, the second rotational flow plate is located at the upper end of the first rotational flow plate, the pressurizing cavity comprises a transmission chamber and a backflow chamber, a partition plate is arranged between the transmission chamber and the backflow chamber, a reflecting plate is arranged in the backflow chamber, and a liquid discharging pipe is arranged at the bottom of the side end face of the backflow chamber. The demister has the advantages of high separation efficiency and convenience in maintenance, and solves the problems that a traditional demister is low in fine liquid drop separation efficiency, air pollution is easy to generate, the fine liquid drops are difficult to flow back after being separated, and secondary pollution is easy to generate.

Description

Technical Field

[0001] The invention relates to the technical field of cyclone plate demisters, in particular to a wind-type demister device. Background Art

[0002] Demisting technology has important applications in the chemical, electric power, metallurgy, environmental protection and other industries, especially in flue gas desulfurization and waste gas purification. Effective demisting can greatly improve the efficiency of subsequent treatment units and reduce environmental pollution. Most of the existing technologies use cyclone plate demisters to demist industrial waste gas.

[0003] The separation efficiency of the existing cyclone plate demister is significantly reduced for droplets with small diameters. This is because the gravity of the small droplets is small, so the centrifugal force they are subjected to is insufficient to separate them from the airflow, and they are easily discharged with the airflow. Even if some of the small droplets can be captured in the demister, they may be entrained again due to airflow disturbances, resulting in unstable demisting effect. Therefore, a wind-powered demisting device is needed to solve the above problem. Summary of the invention

[0004] The purpose of the present invention is to provide a wind-powered defogger with the advantages of high separation efficiency and convenient maintenance, which solves the problems of low separation efficiency of fine droplets by traditional defoggers, easy air pollution, difficulty in reflow of fine droplets after separation, and easy secondary pollution.

[0005] To achieve the above object, the present invention provides the following technical solution: a wind-powered demisting device, comprising a demisting tower, a first cyclone plate and a second cyclone plate, the side wall of the demisting tower is provided with a booster chamber, a blower is provided on the outside of the booster chamber, and a wind scraping mechanism is provided on the second cyclone plate; A swirl plate bracket is provided in the demisting tower, the first swirl plate and the second swirl plate are mounted on the swirl plate bracket and are rotatably connected thereto, and the second swirl plate is located at the upper end of the first swirl plate; The boost chamber includes a transmission chamber and a reflux chamber, a partition is provided between the transmission chamber and the reflux chamber, a reflector is provided in the reflux chamber, and a drain pipe is provided at the bottom of the side end surface of the reflux chamber; The wind scraping mechanism comprises a scraper, a wind blade, a torsion spring and a rotating shaft, and the wind scraping mechanism is installed on the inner end surface of the side wall of the second swirl plate.

[0006] As a preferred wind-powered demisting device of the present invention, a shaft sleeve is provided on the scraper, and the shaft sleeve and the torsion spring are sleeved on the rotating shaft. The scraper is rotatably connected with the second swirl plate through the rotating shaft, the shaft sleeve and the torsion spring, and the wind blade is fixedly mounted on the upper end of the rotating shaft.

[0007] As a preferred wind-type demisting device of the present invention, the side wall of the transmission chamber is provided with a pressurized air inlet facing the wind blades, the wind blades are arc-shaped vertical plates, and the air outlet of the blower is fixedly installed in the pressurized air inlet.

[0008] As a preferred embodiment of a wind-type demisting device of the present invention, the side end surface of the scraper is provided with an elastic rubber strip that fits with the inner end surface of the side wall of the second swirl plate, and the elastic rubber strip is made of silicone material.

[0009] As a preferred wind-type demisting device of the present invention, the number of the elastic rubber strips is 1-3, and the elastic rubber strips are interference-fitted on the side end surface of the scraper.

[0010] As a preferred wind-type demisting device of the present invention, a limiting column is provided on the inner end surface of the side wall of the second swirl plate, and the limiting column is located on the lower end surface of the scraper.

[0011] As a preferred wind-type demisting device of the present invention, a limiting column is provided on the inner end surface of the side wall of the second swirl plate, and the limiting column is located on the lower end surface of the scraper.

[0012] As a preferred wind-type demisting device of the present invention, the inner end surface of the demisting tower is provided with a contraction section, the contraction section is located at the lower end of the first cyclone plate, and the side wall of the contraction section is provided with an air suction hole.

[0013] As a preferred embodiment of the wind-type demisting device of the present invention, the reflecting plate is located outside the contraction section, and the reflecting plate is a trumpet-shaped structure.

[0014] As a preferred wind-powered defogger of the present invention, the first swirl plate and the second swirl plate include a center disk, swirl blades and a stabilizing ring, the swirl blades are fixedly mounted on the side end faces of the center disk, the stabilizing rings are fixedly mounted on the side wall outer end faces of the swirl blades, the inner wall of the stabilizing ring of the first swirl plate is flush with the inner wall of the defogger tower, and the diameter of the second swirl plate is larger than the inner diameter of the defogger tower.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention accelerates the rotation of the second cyclone plate by the airflow provided by the blower, which significantly increases the centrifugal force. The fine droplets that are originally difficult to separate can overcome the air resistance under the action of the strong centrifugal force, be separated from the gas, and adhere to the side wall of the cyclone plate. This design is particularly suitable for processing mist containing a large number of fine droplets. Traditional demisting devices are difficult to effectively capture and remove such droplets, and the addition of the wind scraping mechanism significantly improves the separation effect of such droplets.

[0016] 2. The present invention cooperates with the blower and the wind scraping mechanism. When the blower blows the scraping mechanism, the scraping strips on the scraper can scrape the side wall of the second cyclone plate, and gather the attached small droplets into larger droplets. These droplets slide down the side wall of the cyclone plate under the action of gravity and are finally collected and discharged, which greatly improves the demisting efficiency.

[0017] 3. The present invention can distinguish between droplets of different sizes through the inner and outer double-layer reflux structure, ensuring that large droplets and small droplets reflux through the most suitable paths respectively, avoiding the problem that small droplets are difficult to reflux and drip due to the influence of wind, and improving the separation accuracy and efficiency. Small droplets are controlled by the airflow in the reflux chamber and are not easily entrained into the airflow again, reducing the possibility of secondary pollution and ensuring the purity of the final exhaust gas. By optimizing the reflux path of the droplets, the residence time of the droplets in the system is reduced, and the pressure fluctuations inside the system are reduced, thereby improving the stability and safety of the overall operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 It is a schematic diagram of the cooperation state between the wind scraping mechanism and the second swirl plate of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle; Figure 6 It is a schematic diagram of the wind blade and scraper structure of the present invention; Figure 7 It is a front cross-sectional view of the present invention; Figure 8 It is a top cross-sectional view of the present invention.

[0019] In the figure: 1. defog tower; 101. swirl plate bracket; 102. contraction section; 2. first swirl plate; 201. center plate; 202. swirl blade; 203. stabilizing ring; 3. second swirl plate; 4. wind scraping mechanism; 401. rotating shaft; 402. scraper; 4021. elastic rubber strip; 403. wind blade; 4031. bushing; 404. torsion spring; 405. limit column; 5. blower; 6. boost chamber; 601. transmission chamber; 602. reflux chamber; 603. partition; 604. reflector; 605. suction hole; 606. drain pipe; 607. boost air inlet; 608. air flow channel. DETAILED DESCRIPTION

[0020] Example 1 See also Figure 1-Figure 8 A wind-powered demisting device comprises a demisting tower 1, a first cyclone plate 2 and a second cyclone plate 3, a side wall of the demisting tower 1 is provided with a boosting chamber 6, a blower 5 is provided outside the boosting chamber 6, and a wind-powered scraping mechanism 4 is provided on the second cyclone plate 3; A cyclone plate bracket 101 is provided in the demisting tower 1, and the first cyclone plate 2 and the second cyclone plate 3 are mounted on the cyclone plate bracket 101 and are rotatably connected thereto, and the second cyclone plate 3 is located at the upper end of the first cyclone plate 2; The boost chamber 6 includes a transmission chamber 601 and a reflux chamber 602. A partition 603 is provided between the transmission chamber 601 and the reflux chamber 602. A reflection plate 604 is provided in the reflux chamber 602. A drain pipe 606 is provided at the bottom of the side end surface of the reflux chamber 602. The wind scraping mechanism 4 comprises a scraper 402 , a wind blade 403 , a torsion spring 404 and a rotating shaft 401 . The wind scraping mechanism 4 is installed on the inner end surface of the side wall of the second swirl plate 3 .

[0021] Furthermore, a sleeve 4031 is provided on the scraper 402, and the sleeve 4031 and the torsion spring 404 are sleeved on the rotating shaft 401. The scraper 402 is rotatably connected with the second swirl plate 3 through the rotating shaft 401, the sleeve 4031 and the torsion spring 404, and the wind blade 403 is fixedly installed on the upper end of the rotating shaft 401.

[0022] When the wind blade 403 is blown by the wind from the blower 5, it drives the scraper 402 to rotate through the shaft sleeve 4031, so that the scraper 402 scrapes the inner end surface of the side wall of the second cyclone plate 3, and the fine droplets attached to the side wall of the second cyclone plate 3 are scraped and fall down, so that the fine droplets gather into large droplets and fall down, thereby improving the demisting effect.

[0023] Furthermore, a side wall of the transmission chamber 601 is provided with a pressurized air inlet 607 facing the wind blade 403 . The wind blade 403 is an arc-shaped vertical plate, and the air outlet of the blower 5 is fixedly installed in the pressurized air inlet 607 .

[0024] When the blower 5 blows, the airflow blown by the blower 5 blows on the wind blades 403, thereby accelerating the rotation of the second swirl plate 3 through the wind blades 403, so that it maintains a high rotation speed, thereby increasing the centrifugal force of the fine droplets in the mist, so that they can be separated from the gas under the action of centrifugal force and adhere to the inner end surface of the side wall of the second swirl plate 3.

[0025] Furthermore, the side end surface of the scraper plate 402 is provided with an elastic rubber strip 4021 which is in contact with the inner end surface of the side wall of the second swirl plate 3 , and the elastic rubber strip 4021 is made of silicone material.

[0026] The elastic strip 4021 made of silicone has good corrosion resistance and is relatively soft, so that during the scraping process of the scraper 402, the elastic strip 4021 can always keep in contact with the inner end surface of the side wall of the second swirl plate 3 under the action of its own elastic force, thereby improving the scraping effect.

[0027] Furthermore, the number of the elastic rubber strips 4021 is 1-3, and the elastic rubber strips 4021 are interference-fitted on the side end surface of the scraper 402 .

[0028] Multiple sets of elastic strips 4021 improve the scraping effect, avoiding that a single set of scrapers 402 do not scrape cleanly, or a single set of elastic strips 4021 affect the scraping effect after aging. The interference installation structure allows the elastic strips 4021 to be quickly removed and replaced after aging, thereby improving the convenience of maintenance.

[0029] Furthermore, a limiting column 405 is provided on the inner end surface of the side wall of the second swirl plate 3 , and the limiting column 405 is located at the lower end surface of the scraper 402 .

[0030] The rotation angle of the scraper 402 is limited by the limit column 405 to prevent the scraper 402 from rotating too much, resulting in insufficient thrust of the blower 5 on the second swirl plate 3, affecting the rotation speed of the second swirl plate 3, and failing to separate fine water droplets in the air, affecting the defog effect.

[0031] Furthermore, the partition 603 is an annular structure, the bottom of the partition 603 is flush with the upper end surface of the second cyclone plate 3 , and an air flow channel 608 is formed between the partition 603 and the outer end surface of the inner wall of the demister tower 1 .

[0032] The baffle 603 reduces the diameter of the airflow when it flows downward. When the gas blown by the blower 5 enters the transmission chamber 601 and flows downward, the baffle 603 blocks the diameter from becoming smaller, thereby increasing the flow rate and generating negative pressure. This generates a suction force away from the center for the droplets on the second swirl plate 3, which is beneficial to the separation of the droplets. The airflow flows downward along the reflux chamber 602, driving the droplets on the inner wall of the reflux chamber 602 to flow toward the drain pipe 606.

[0033] Furthermore, a contraction section 102 is provided on the inner end surface of the demister tower 1 . The contraction section 102 is located at the lower end of the first cyclone plate 2 . The side wall of the contraction section 102 is provided with an air suction hole 605 .

[0034] When the mist in the absorption tower flows upward, when passing through the contraction section 102, the aperture is reduced and the flow rate is increased, so that a negative pressure is generated at the air intake hole 605, thereby introducing the airflow in the reflux hole into the defogger 1, causing it to flow upward, increasing the airflow in the defogger 1, and increasing the rotation speed of the first cyclone plate 2 and the second cyclone plate 3.

[0035] Furthermore, the reflective plate 604 is located outside the contraction section 102 , and the reflective plate 604 is a trumpet-shaped structure.

[0036] The reflector plate 604 allows the air flow to flow into the defogger 1 through the bottom of the reflector plate 604. Liquid droplets in the air hit the reflector plate 604 and flow to the bottom of the reflux chamber 602 and are discharged through the drain pipe 606, thereby achieving the purpose of gas-liquid separation and preventing the air flow from carrying liquid droplets back into the defogger 1 and affecting the defogger effect.

[0037] Furthermore, the first swirl plate 2 and the second swirl plate 3 include a center disk 201, a swirl blade 202 and a stabilizing ring 203. The swirl blade 202 is fixedly installed on the side end surface of the center disk 201, and the stabilizing ring 203 is fixedly installed on the outer end surface of the side wall of the swirl blade 202. The inner wall of the stabilizing ring 203 of the first swirl plate 2 is flush with the inner wall of the defogger 1, and the diameter of the second swirl plate 3 is larger than the inner diameter of the defogger 1.

[0038] The first cyclone plate 2 throws the large particle droplets onto the stabilizing ring 203, and under the action of their own gravity, they slide along the stabilizing ring 203 and the inner wall of the defogger tower 1 into the absorption tower. The fine water droplets in the air are separated by the first cyclone plate 2 and slide into the reflux chamber 602 after reaching the first cyclone plate 2 with the airflow due to insufficient centrifugal force. The airflow in the reflux chamber 602 flows downward, which will not cause the problem of the droplets being too small to be blown into the atmosphere by the airflow.

[0039] When the device is in use, it is installed on the top of a factory washing tower or cooling tower. When the mist-containing gas enters the defogger 1, the airflow itself drives the first swirl plate 2 and the second swirl plate 3 to rotate, so that the first swirl plate 2 and the second swirl plate 3 drive the airflow to rotate, so that large particles of liquid are thrown onto the inner wall of the defogger 1 under the action of centrifugal force and flow back to the lower device along the inner wall. The blower 5 is started and starts to work to generate high-speed airflow. The airflow first passes through the boost air inlet 607 and directly acts on the wind blade 403, driving it to rotate along the rotating shaft 401, driving the lower end scraper 402 to rotate, scraping the inner wall of the first swirl plate 2, scraping the small water droplets on the inner wall into large water droplets that fall, and when the wind blade 40 After the scraper 402 is away from the blower 5, it is reset under the action of the torsion spring 404 and is ready for the next scraping. When the airflow of the blower 5 blows the wind blade 403, it also directly acts on the second swirl plate 3 to accelerate its rotation, enhance the centrifugal force of the droplets, separate the fine droplets from the gas, and adhere to the inner end surface of the swirl plate. After the droplets slide down, they fall into the reflux chamber 602 and are discharged from the outside of the device through the drain pipe 606, so as to achieve effective collection and discharge of the droplets. In the demisting process of the device, the large liquid is separated by the first swirl plate 2 and directly flows back along the inner wall. The fine water mist flows back from the interlayer of the boosting chamber 6 after the wind force of the second swirl plate 3. The airflow in the boosting chamber 6 flows downward, avoiding the problem that the small water droplets cannot fall due to insufficient gravity.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind-powered demisting device, comprising a demisting tower (1), a first cyclone plate (2) and a second cyclone plate (3), characterized in that: The side wall of the demisting tower (1) is provided with a boost chamber (6), a blower (5) is provided outside the boost chamber (6), and a wind scraping mechanism (4) is provided on the second swirl plate (3); A swirl plate bracket (101) is provided in the demisting tower (1), the first swirl plate (2) and the second swirl plate (3) are mounted on the swirl plate bracket (101) and are rotatably connected thereto, and the second swirl plate (3) is located at the upper end of the first swirl plate (2); The boost chamber (6) comprises a transmission chamber (601) and a reflux chamber (602); a partition plate (603) is provided between the transmission chamber (601) and the reflux chamber (602); a reflection plate (604) is provided in the reflux chamber (602); and a liquid discharge pipe (606) is provided at the bottom of a side end surface of the reflux chamber (602); The wind scraping mechanism (4) comprises a scraper (402), a wind blade (403), a torsion spring (404) and a rotating shaft (401); the wind scraping mechanism (4) is mounted on the inner end surface of the side wall of the second cyclone plate (3).

2. A wind-powered demisting device as claimed in claim 1, characterized in that: The scraper (402) is provided with a shaft sleeve (4031), the shaft sleeve (4031) and the torsion spring (404) are sleeved on the rotating shaft (401), the scraper (402) and the second swirl plate (3) are rotatably connected through the rotating shaft (401), the shaft sleeve (4031) and the torsion spring (404), and the wind blade (403) is fixedly mounted on the upper end of the rotating shaft (401).

3. A wind-powered demisting device as claimed in claim 1, characterized in that: The side wall of the transmission chamber (601) is provided with a pressurized air inlet (607) facing the wind blade (403); the wind blade (403) is an arc-shaped vertical plate; and the air outlet of the blower (5) is fixedly installed in the pressurized air inlet (607).

4. A wind-powered demisting device as claimed in claim 2, characterized in that: The side end surface of the scraper plate (402) is provided with an elastic rubber strip (4021) which is in contact with the inner end surface of the side wall of the second swirl plate (3); the elastic rubber strip (4021) is made of a silicone material.

5. A wind-powered demisting device as claimed in claim 4, characterized in that: The number of the elastic rubber strips (4021) is 1-3, and the elastic rubber strips (4021) are interference-mounted on the side end surface of the scraper (402).

6. A wind-powered demisting device as claimed in claim 1, characterized in that: A limiting column (405) is provided on the inner end surface of the side wall of the second swirl plate (3), and the limiting column (405) is located on the lower end surface of the scraper (402).

7. A wind-powered demisting device as claimed in claim 1, characterized in that: The partition plate (603) is an annular structure, the bottom of the partition plate (603) is flush with the upper end surface of the second cyclone plate (3), and an air flow channel (608) is formed between the partition plate (603) and the outer end surface of the inner wall of the demister tower (1).

8. A wind-powered demisting device as claimed in claim 1, characterized in that: The inner end surface of the demister tower (1) is provided with a contraction section (102), the contraction section (102) is located at the lower end of the first cyclone plate (2), and the side wall of the contraction section (102) is provided with an air suction hole (605).

9. A wind-powered demisting device as claimed in claim 8, characterized in that: The reflection plate (604) is located outside the contraction section (102), and the reflection plate (604) is a trumpet-shaped structure.

10. A wind-powered demisting device as claimed in claim 1, characterized in that: The first swirl plate (2) and the second swirl plate (3) comprise a central disk (201), swirl blades (202) and a stabilizing ring (203); the swirl blades (202) are fixedly mounted on the side end surface of the central disk (201); the stabilizing ring (203) is fixedly mounted on the outer end surface of the side wall of the swirl blades (202); the inner wall of the stabilizing ring (203) of the first swirl plate (2) is flush with the inner wall of the demister tower (1); and the diameter of the second swirl plate (3) is larger than the inner diameter of the demister tower (1).

Images