Exhaust gas absorption tower with anti-backflow function

Abstract

The utility model discloses a kind of waste gas absorption towers with anti-reflux function, it is related to waste gas absorption tower technical field.The utility model includes absorption tower and filter screen fixedly connected on the inner wall of absorption tower, further include: scrape clean part, the scrape clean part is installed on the inner wall of absorption tower;And anti-reflux part, the anti-reflux part is installed in absorption tower;Wherein, filter screen is filled with washing water cotton, scrape clean part is located above anti-reflux part, air suction component, the air suction component is installed on cross support frame one;Wherein, scrape clean component is located below filter screen, air suction component is located above filter screen.The utility model is through being provided with scrape clean part, solved the existing waste gas absorption tower in use process, it is inconvenient to scrape clean to the filter screen of wetting treatment liquid, will lead to the treatment liquid remaining on filter screen surface and the pollutant in waste gas continuously react and generate impurity and adhere, make filter screen pore gradually block, influence gas-liquid flow efficiency, reduce absorption effect problem.

Description

Technical Field

[0001] This utility model belongs to the technical field of waste gas absorption towers, and in particular relates to a waste gas absorption tower with anti-backflow function. Background Technology

[0002] The waste gases mainly include acidic waste gases such as hydrogen chloride, sulfuric acid mist, and sulfur dioxide generated by industries such as chemical, electronics, and metallurgy; alkaline waste gases such as ammonia and amines emitted by industries such as fertilizer and pharmaceutical; water-soluble organic waste gases such as methanol and ethanol generated by industries such as paint coating and food processing; odorous gases such as hydrogen sulfide emitted by waste disposal and petrochemical industries; and waste gases containing particulate matter and droplets generated by metal processing. Direct emission of these waste gases will pollute the air, so they need to be treated. Among the many treatment methods, using waste gas absorption towers to absorb waste gases is a common method.

[0003] However, in the process of using existing waste gas absorption towers, it is not convenient to scrape the filter screen that is wetted with treatment liquid. This will cause the treatment liquid remaining on the surface of the filter screen to continuously react with pollutants in the waste gas to generate impurities and adhere to it, which will gradually clog the filter screen pores, affect the gas-liquid flow efficiency, and reduce the absorption effect. Utility Model Content

[0004] The purpose of this utility model is to provide a waste gas absorption tower with anti-backflow function. By setting up a scraping section, it solves the problem that in the existing waste gas absorption tower, it is not convenient to scrape the filter screen that is wetted with treatment liquid during use. This causes the treatment liquid remaining on the surface of the filter screen to continuously react with pollutants in the waste gas to generate impurities and adhere to it, which gradually clogs the filter screen pores, affects the gas-liquid flow efficiency, and reduces the absorption effect.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a waste gas absorption tower with anti-backflow function, including an absorption tower and a filter screen fixedly connected to the inner wall of the absorption tower, and further including: a scraping part, which is installed on the inner wall of the absorption tower; and an anti-backflow part, which is installed inside the absorption tower; wherein, the filter screen is filled with washing cotton, and the scraping part is located above the anti-backflow part.

[0007] Furthermore, the scraping section includes a scraping assembly installed inside the absorption tower; and a suction assembly installed on a cross support frame; wherein the scraping assembly is located below the filter screen, and the suction assembly is located above the filter screen.

[0008] Furthermore, the anti-backflow section includes a support assembly mounted on the inner wall of the absorption tower; and an elastic assembly mounted on the support assembly; wherein the elastic assembly is used to control the opening and closing of the support assembly.

[0009] Furthermore, the scraping assembly includes a cross-shaped support frame fixedly connected to the inner wall of the absorption tower. A rotating shaft passes through the cross-shaped support frame and is rotatably connected to it. A filter screen passes through the bottom of the rotating shaft and is rotatably connected to the filter screen. Several connecting frames are fixedly connected to the outer wall of the rotating shaft. Scrapers are fixedly connected to the side of each connecting frame away from the rotating shaft. A connecting pipe is connected to the outer wall of the filter screen. The side of the connecting pipe away from the filter screen extends to the outside of the absorption tower and is fixedly connected to the absorption tower. The side of each scraper away from the rotating shaft is in contact with the absorption tower, and the top of each scraper is in contact with the filter screen.

[0010] Furthermore, the suction assembly includes a motor fixedly connected to the top of the cross support frame, the output shaft of the motor being fixedly connected to the rotating shaft via a coupling, a fan being fixedly connected to the outer wall of the rotating shaft, and a limiting component being provided on the cross support frame; wherein, both the motor and the fan are located at the central axis of the rotating shaft.

[0011] Furthermore, the support assembly includes a second cross-shaped support frame fixedly connected to the inner wall of the absorption tower, an adapter ring fixedly connected to the inner wall of the absorption tower, and a piston slidably connected to the inner wall of the adapter ring; wherein, the second cross-shaped support frame is located above the adapter ring and the piston.

[0012] Furthermore, the elastic component includes a telescopic rod fixedly connected between the cross support frame 2 and the piston. A spring is sleeved on the outer wall of the telescopic rod. The top of the spring is fixedly connected to the cross support frame 2, and the bottom of the spring is fixedly connected to the piston. In its normal state, the spring does not have elasticity or tension.

[0013] Furthermore, the limiting member includes a slot formed on the inner wall of the cross support frame, and a ring is fixedly connected to the outer wall of the rotating shaft; wherein the outer wall of the ring extends into the slot.

[0014] This utility model has the following beneficial effects:

[0015] 1. By setting up a scraping section, when it is necessary to absorb waste gas, the motor can be started, which drives the fan to rotate through the shaft, drawing the waste gas into the absorption tower. When the waste gas passes through the filter screen, it will be treated by the absorption liquid on the filter screen. During the rotation of the shaft, the connecting frame will drive the scraper to rotate and scrape the inner wall of the absorption tower and the bottom of the filter screen. This can promptly remove the impurities generated by the reaction between the residual treatment liquid and pollutants on the surface of the filter screen, avoid clogging of the filter screen pores, ensure smooth gas-liquid flow, maintain a stable and efficient absorption effect, and ensure the continuous and stable operation of the waste gas absorption tower.

[0016] 2. By incorporating an anti-backflow mechanism, when the fan rotates, the suction generated inside the absorption tower drives the piston upward until it disengages from the adapter ring, creating a gap. The waste gas to be treated is then drawn into the absorption tower through this gap. During this process, the telescopic rod and spring are compressed, generating elastic force. After absorption is complete, the motor is turned off, the fan stops rotating, and the piston is no longer subjected to suction. The spring releases its elastic force, pushing the piston back to its original position, restoring the seal between the piston and the adapter ring. This achieves automatic control and sealing switching during the waste gas intake process. When the fan rotates, the piston moves to create a gap for waste gas intake. The telescopic rod and spring work together to ensure smooth operation. After absorption is complete, the spring pushes the piston back to its original position to seal, preventing waste gas leakage and liquid backflow. This ensures absorption efficiency while improving the safety and stability of the equipment operation.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a partial structural schematic diagram of the absorption tower of this utility model;

[0020] Figure 2 This is a partial cross-sectional view of the anti-backflow section of this utility model;

[0021] Figure 3 This is a partial cross-sectional view of the scraping part of this utility model;

[0022] Figure 4 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0023] Figure 5 This utility model Figure 2 A magnified structural diagram of B in the diagram.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 111. Absorption tower; 112. Filter screen; 2. Scraping section; 21. Scraping assembly; 211. Cross support frame one; 212. Rotating shaft; 213. Connecting frame; 214. Scraper; 215. Connecting pipe; 22. Suction assembly; 221. Motor; 222. Fan; 223. Slot; 224. Ring; 3. Anti-backflow section; 31. Support assembly; 311. Cross support frame two; 312. Adaptive ring; 313. Piston; 32. Elastic assembly; 321. Telescopic rod; 322. Spring. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5 As shown, this utility model is a waste gas absorption tower with anti-backflow function, including an absorption tower 111 and a filter screen 112 fixedly connected to the inner wall of the absorption tower 111, and also includes: a scraping part 2, which is installed on the inner wall of the absorption tower 111; and an anti-backflow part 3, which is installed inside the absorption tower 111; wherein, the filter screen 112 is filled with washing cotton, and the scraping part 2 is located above the anti-backflow part 3.

[0028] The cleaning section 2 includes a cleaning assembly 21 installed inside the absorption tower 111; and a suction assembly 22 installed on a cross support frame 211. The cleaning assembly 21 is located below the filter screen 112, and the suction assembly 22 is located above the filter screen 112. The cleaning assembly 21 includes a cross support frame 211 fixedly connected to the inner wall of the absorption tower 111, with a rotating shaft 212 passing through it. The rotating shaft 212 is connected to the cross support frame 211. A rotating shaft 212 is rotatably connected to a filter screen 112, with its bottom penetrating the screen. Several connecting brackets 213 are fixedly connected to the outer wall of the shaft 212. Scrapers 214 are fixedly connected to the side of each connecting bracket 213 away from the shaft 212. A connecting pipe 215 is connected to the outer wall of the filter screen 112, extending from the side away from the filter screen 112 to the outside of the absorption tower 111. The connecting pipe 215 is fixedly connected to the absorption tower 111. Several scrapers 214 are in contact with the absorption tower 111 on the side away from the rotating shaft 212, and the tops of the scrapers 214 are in contact with the filter screen 112. The suction assembly 22 includes a motor 221 fixedly connected to the top of the cross support frame 211. The output shaft of the motor 221 is fixedly connected to the rotating shaft 212 via a coupling. A fan 222 is fixedly connected to the outer wall of the rotating shaft 212. Limiting components are provided on the cross support frame 211. The motor 221 and the fan 222 are both located on the rotating shaft 212. At the central axis of shaft 212, the limiting component includes a groove 223 opened on the inner wall of the cross support frame 211, and a ring 224 is fixedly connected to the outer wall of the rotating shaft 212; wherein, the outer wall of the ring 224 extends into the groove 223, and by setting the scraping part 2, the impurities generated by the reaction between the residual treatment liquid and pollutants on the surface of the filter screen 112 can be removed in time, avoiding the clogging of the pores of the filter screen 112, ensuring smooth gas-liquid flow, maintaining a stable and efficient absorption effect, and ensuring the continuous and stable operation of the waste gas absorption tower.

[0029] The anti-backflow section 3 includes a support assembly 31, which is mounted on the inner wall of the absorption tower 111; and an elastic assembly 32, which is mounted on the support assembly 31. The elastic assembly 32 controls the opening and closing of the support assembly 31. The support assembly 31 includes a second cross-shaped support frame 311 fixedly connected to the inner wall of the absorption tower 111. A matching ring 312 is fixedly connected to the inner wall of the absorption tower 111, and a piston 313 is slidably connected to the inner wall of the matching ring 312. The second cross-shaped support frame 311 is located above the matching ring 312 and the piston 313. The elastic assembly 32 includes components fixedly connected to the second cross-shaped support frame 311. The telescopic rod 321 between the fan 222 and the piston 313 has a spring 322 sleeved on its outer wall. The top of the spring 322 is fixedly connected to the cross support frame 311, and the bottom of the spring 322 is fixedly connected to the piston 313. By setting the anti-backflow part 3, the automatic control and sealing switching of the exhaust gas intake process can be realized. When the fan 222 rotates, the piston 313 moves to form a gap to suck in exhaust gas. The telescopic rod 321 and the spring 322 work together to ensure smooth operation. After absorption, the spring 322 pushes the piston 313 to reset and seal, preventing exhaust gas leakage and liquid backflow, which not only ensures absorption efficiency but also improves the safety and stability of equipment operation.

[0030] One specific application of this embodiment is as follows: In use, absorbent liquid is first injected into the filter screen 112 through the connecting pipe 215. When it is necessary to absorb waste gas, the motor 221 can be started, causing it to drive the fan 222 to rotate via the rotating shaft 212, drawing the waste gas into the absorption tower 111. When the waste gas passes through the filter screen 112, it is treated by the absorbent liquid on the filter screen 112. During the rotation of the rotating shaft 212, the connecting frame 213 will drive the scraper 214 to rotate, scraping clean the inner wall of the absorption tower 111 and the bottom of the filter screen 112. When the fan 222 rotates, the absorbent liquid... The suction generated inside the absorption tower 111 will drive the piston 313 to move upward until the piston 313 disengages from the adapter ring 312 and a gap is created. The waste gas to be treated will be drawn into the absorption tower 111 through this gap. During this process, the telescopic rod 321 and the spring 322 will be compressed. When the spring 322 is compressed, it will generate elastic force. After absorption is completed, the motor 221 is turned off and the fan 222 stops rotating. At this time, the piston 313 is no longer subject to suction. The spring 322 releases its elastic force and pushes the piston 313 to reset, restoring the sealing state between it and the adapter ring 312.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A waste gas absorption tower with anti-backflow function, comprising an absorption tower (111) and a filter screen (112) fixedly connected to the inner wall of the absorption tower (111), characterized in that, Also includes: Scraping section (2), said scraping section (2) is installed on the inner wall of the absorption tower (111); as well as Anti-backflow section (3), which is installed inside the absorption tower (111); The filter screen (112) is filled with washing cotton, and the cleaning part (2) is located above the anti-backflow part (3).

2. The waste gas absorption tower with anti-backflow function according to claim 1, characterized in that, The scraping section (2) includes a scraping assembly (21), which is installed inside the absorption tower (111); and A suction assembly (22) is mounted on a cross support frame (211); The cleaning component (21) is located below the filter (112), and the suction component (22) is located above the filter (112).

3. A waste gas absorption tower with anti-backflow function according to claim 2, characterized in that, The anti-backflow section (3) includes a support assembly (31) which is installed on the inner wall of the absorption tower (111); and An elastic component (32) is mounted on a support component (31); Among them, the elastic component (32) is used to control the opening and closing of the support component (31).

4. A waste gas absorption tower with anti-backflow function according to claim 3, characterized in that, The scraping assembly (21) includes a cross support frame (211) fixedly connected to the inner wall of the absorption tower (111). A rotating shaft (212) passes through the cross support frame (211) and is rotatably connected to the cross support frame (211). The bottom of the rotating shaft (212) passes through the filter screen (112) and is rotatably connected to the filter screen (112). Several connecting frames (213) are fixedly connected to the outer wall of the rotating shaft (212). A scraper (214) is fixedly connected to the side of each of the connecting frames (213) away from the rotating shaft (212). A connecting pipe (215) is connected to the outer wall of the filter screen (112). The side of the connecting pipe (215) away from the filter screen (112) extends to the outside of the absorption tower (111) and is fixedly connected to the absorption tower (111). Among them, the side of several scrapers (214) away from the rotating shaft (212) is in contact with the absorption tower (111), and the top of several scrapers (214) is in contact with the filter screen (112).

5. A waste gas absorption tower with anti-backflow function according to claim 4, characterized in that, The suction assembly (22) includes a motor (221) fixedly connected to the top of the cross support frame (211). The output shaft of the motor (221) is fixedly connected to the rotating shaft (212) via a coupling. A fan (222) is fixedly connected to the outer wall of the rotating shaft (212). A limiter is provided on the cross support frame (211). The motor (221) and the fan (222) are both located at the central shaft of the rotating shaft (212).

6. A waste gas absorption tower with anti-backflow function according to claim 5, characterized in that, The support assembly (31) includes a cross support frame (311) fixedly connected to the inner wall of the absorption tower (111), an adapter ring (312) fixedly connected to the inner wall of the absorption tower (111), and a piston (313) slidably connected to the inner wall of the adapter ring (312). Among them, the cross support bracket 2 (311) is located above the adapter ring (312) and the piston (313).

7. A waste gas absorption tower with anti-backflow function according to claim 6, characterized in that, The elastic component (32) includes a telescopic rod (321) fixedly connected between the cross support frame (311) and the piston (313). A spring (322) is sleeved on the outer wall of the telescopic rod (321). The top of the spring (322) is fixedly connected to the cross support frame (311), and the bottom of the spring (322) is fixedly connected to the piston (313). Among them, the spring (322) does not have elastic force and tension in its normal state.

8. A waste gas absorption tower with anti-backflow function according to claim 7, characterized in that, The limiting component includes a slot (223) formed on the inner wall of the cross support frame (211), and a ring (224) is fixedly connected to the outer wall of the rotating shaft (212). The outer wall of the ring (224) extends into the slot (223).

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