Self-cleaning exhaust gas absorption tower

Abstract

The application discloses a self-cleaning waste gas absorption tower and belongs to the technical field of ecological protection. The self-cleaning waste gas absorption tower comprises a support, an absorption kettle fixedly connected to the support, a spraying module and a filler layer arranged in the absorption kettle, a partition plate fixedly connected to the bottom of the absorption kettle, two cavities divided by the partition plate in the bottom of the absorption kettle, an air inlet pipe and an air outlet pipe fixedly connected to the side and top of the absorption kettle respectively and communicated with each other, two blowdown pipes fixedly connected to the bottom of the absorption kettle, and two cavities in the bottom of the absorption kettle communicated with the two blowdown pipes respectively. The bottom of the absorption kettle is divided into two independent cavities by the partition plate, and the working states of the two cavities in the bottom of the absorption kettle are alternately switched during the waste gas absorption process, so that one cavity is in the working state and the other cavity is in the blowdown state, the discharge of impurities in the bottom of the absorption kettle is realized without stopping the machine, and the absorption rate of the waste gas is improved.

Description

Technical Field

[0001] This invention relates to the field of ecological protection technology, and in particular to a self-cleaning waste gas absorption tower. Background Technology

[0002] Industrial production processes generate a wide variety of waste gases, mainly including sulfur compounds, nitrogen oxides, volatile organic compounds, dust, acid mist, and toxic and harmful gases. If these waste gases are discharged directly without treatment, they will not only seriously pollute the atmospheric environment but also cause problems such as acid rain, photochemical smog, and ozone layer depletion. To effectively control waste gas pollution, industries often use physical, chemical, or biological methods for treatment, including adsorption, catalytic combustion, condensation recovery, biodegradation, and absorption. Among these, spray absorption towers, as a type of wet purification equipment with simple structure, stable operation, and strong applicability, are widely used in the treatment of acid and alkali waste gases, water-soluble VOCs, and dust.

[0003] During operation, existing spray absorption towers capture dust, acidic and alkaline substances, and other soluble or insoluble impurities after the spray liquid comes into full contact with the waste gas. These impurities settle to the bottom of the tower with the liquid. As the operating time increases, the deposits accumulate and gradually form sludge or scale layers. This not only occupies the effective volume at the bottom of the tower but also easily blocks the drain outlet and return pipe, hindering the normal circulation of the spray liquid. To prevent system failure, the tower must be shut down periodically for manual cleaning of the deposits at the bottom. This process not only consumes a lot of manpower and time and increases operation and maintenance costs but also causes intermittent interruptions in the waste gas treatment system, affecting the overall purification efficiency and continuous operation stability. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a self-cleaning waste gas absorption tower.

[0005] Technical solution: A self-cleaning waste gas absorption tower includes a support frame, an absorption vessel fixedly connected to the support frame, a spray module and a packing layer inside the absorption vessel, a partition fixedly connected to the bottom of the absorption vessel, the partition dividing the bottom of the absorption vessel into two chambers, an inlet pipe and an outlet pipe fixedly connected and connected to the side and top of the absorption vessel respectively, two drain pipes fixedly connected to the bottom of the absorption vessel, the two chambers at the bottom of the absorption vessel respectively connected to the two drain pipes, a circulation component for recirculating the spray liquid on the absorption vessel, and a sealing component for intermittently sealing the different chambers at the bottom of the absorption vessel inside the support frame.

[0006] Further explanation: the circulation assembly includes a return pipe, which is fixedly connected to the absorption vessel. The support is fixedly connected to a circulation pump and a filter module. The outlet of the filter module is connected to the inlet of the circulation pump. The outlet of the circulation pump is connected to the spray module through the return pipe. The absorption vessel is fixedly connected to a connecting pipe and a connecting tube. The connecting pipe and the connecting tube are respectively connected to two cavities at the bottom of the absorption vessel. The connecting pipe and the connecting tube are fixedly connected and connected. The connecting tube is connected to the inlet of the filter module. An electromagnetic three-way valve is provided at the connection between the connecting pipe and the connecting tube.

[0007] To further explain, the connection points of the connecting pipe and the connecting tube to the absorption vessel are at the same height, and the distance between the connecting pipe and the connecting tube and the bottom of the absorption vessel cavity is greater than or equal to one-quarter of the cavity height.

[0008] To further explain, the sealing assembly includes a rotating cylinder, which is rotatably and sealed within the partition plate. The rotating cylinder is rotatably and sealed to the absorption vessel. A drive module for driving the rotating cylinder to rotate is provided at the bottom of the absorption vessel. A sealing plate located inside the absorption vessel is fixedly connected to the rotating cylinder. The sealing plate is used to seal any cavity at the bottom of the absorption vessel.

[0009] To further explain, the absorption vessel is sealed and rotatably connected to a rotating ring, the sealing plate is sealed and rotatably connected to the rotating ring, the rotating ring is provided with two connecting shafts, the connecting shafts are fixedly connected to scrapers, the rotating cylinder is sealed and rotatably connected to a rotating shaft, the rotating shaft is fixedly connected to the rotating ring, and the bottom of the absorption vessel is provided with a driving component, the output shaft of the driving component is fixedly connected to the rotating shaft.

[0010] To further explain, the cross-sectional shape of both cavities inside the absorption vessel is fan-shaped.

[0011] To further explain, the scraper is fixedly connected to several agitator plates via a connecting rod, which are used to agitate the spray liquid.

[0012] To further explain, both connecting shafts are slidably connected to the rotating ring, and a first elastic element is provided between both connecting shafts and the rotating ring.

[0013] To further explain, the partition is fixedly connected to two symmetrically distributed fixed arc plates, which are respectively located in two cavities at the bottom of the absorption vessel. The fixed arc plates are provided with driving grooves, and the connecting shaft is slidably connected to a locking block. A second elastic element is provided between the locking block and the connecting shaft, and the locking block slides in adjacent driving grooves.

[0014] To further explain, the driving groove is composed of an upper arc-shaped groove, two symmetrically distributed inclined grooves, two symmetrically distributed lower arc-shaped grooves, and two symmetrically distributed vertical grooves. The two ends of the upper arc-shaped groove are connected to its middle part through the vertical grooves, the lower arc-shaped grooves, and the inclined grooves. The depth of the upper arc-shaped groove gradually becomes shallower from the middle to the two ends. The depths of the inclined grooves, the lower arc-shaped grooves, and the vertical grooves are all consistent with the shallow depth of the upper arc-shaped groove.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention divides the bottom of the absorption vessel into two independent chambers by means of a partition, and alternates the working state of the two chambers at the bottom of the absorption vessel during the waste gas absorption process, so that one chamber is in the working state and the other chamber is in the sewage discharge state, thereby realizing the discharge of impurities at the bottom of the absorption vessel without stopping the machine, and improving the absorption rate of waste gas.

[0016] 2. By having the scraper reciprocate to the bottom of the absorption vessel, the scraper pushes the impurities attached to the bottom of the absorption vessel into the spray liquid, thereby increasing the suspension degree of the impurities in the spray liquid. At the same time, the oscillating of the stirring plate generates shearing force to break large impurities into smaller impurities, making it easier for the impurities in the absorption vessel to be discharged along the drain pipe.

[0017] 3. The cooperation between the card block and the drive groove causes the scraper to gather the sediment on both sides of the sewage pipe toward the sewage outlet, so that the spray liquid can carry a large amount of impurities out when it is discharged along the sewage outlet, which significantly improves the concentration of impurities and the discharge efficiency, thereby reducing the probability of impurities remaining and accumulating. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the absorption vessel of the present invention; Figure 3 This is a three-dimensional cross-sectional view of the partition of the present invention; Figure 4 This is a three-dimensional structural diagram of the scraper of the present invention; Figure 5 This is a top view of the three-dimensional structure of the partition of the present invention; Figure 6 This is a three-dimensional structural diagram of the fixed arc plate of the present invention; Figure 7 This is a three-dimensional structural diagram of the arc-shaped groove and the inclined groove of the present invention; Figure 8 For the present invention Figure 6 Enlarged diagram of point A in the middle.

[0019] In the attached diagrams: 1: Support, 2: Absorption vessel, 3: Spray module, 4: Packing layer, 5: Baffle, 6: Inlet pipe, 7: Outlet pipe, 8: Sewage pipe, 201: Return pipe, 202: Circulation pump, 203: Filter module, 204: Connecting pipe, 205: Connecting pipe, 206: Solenoid three-way valve, 301: Rotary drum, 302: Drive module, 303: Sealing plate, 401: Rotating ring, 402: Connecting shaft, 403: Scraper, 404: Rotating shaft, 405: Drive component, 406: Stirring plate, 501: First elastic component, 502: Fixed arc plate, 503: Drive groove, 5031: Upper arc groove, 5032: Inclined groove, 5033: Lower arc groove, 5034: Vertical groove, 504: Locking block, 505: Second elastic component. Detailed Implementation

[0020] The invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are illustrated. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art.

[0021] When existing spray absorption towers are in operation, the spray liquid captures dust, acids, alkalis, and other impurities from the exhaust gas and settles to the bottom of the tower. Over time, this accumulation forms sludge or scale, which can easily clog the drain outlet and return pipes, affecting the circulation of the spray liquid. To avoid system failure, regular shutdowns for manual cleaning are required, which not only consumes manpower and time and increases operation and maintenance costs, but also causes interruptions in exhaust gas treatment, reducing purification efficiency and the continuity and stability of system operation. Example 1

[0022] This embodiment provides a self-cleaning waste gas absorption tower for achieving autonomous sewage discharge without shutting down the system.

[0023] Reference Figure 1 and Figure 2As shown, the apparatus includes a support 1, to which an absorption vessel 2 is fixedly connected. The absorption vessel 2 contains two spray modules 3 and two packing layers 4, which are alternately distributed, with the spray module 3 at the top. A partition 5 is fixedly connected to the bottom of the absorption vessel 2, dividing the bottom into two chambers. An inlet pipe 6 and an outlet pipe 7 are fixedly connected to the sides and top of the absorption vessel 2, respectively. The inlet pipe 6 is used to inject waste gas into the absorption vessel 2, and the outlet pipe 7 is used to discharge purified gas. Two drain pipes 8 are fixedly connected to the bottom of the absorption vessel 2, used to discharge floating and deposited impurities from the bottom of the absorption vessel 2. The two chambers at the bottom of the absorption vessel 2 are connected to the two drain pipes 8. A circulation assembly for recirculating the spray liquid is installed on the absorption vessel 2, and a sealing assembly for intermittently sealing different chambers at the bottom of the absorption vessel 2 is installed within the support 1.

[0024] Reference Figure 1 and Figure 2 As shown, the circulation assembly includes a return pipe 201, which is fixedly connected to the outside of the absorption vessel 2. A circulation pump 202 and a filter module 203 are fixedly connected to the support 1. The filter module 203 is used to filter impurities in the spray liquid. The filter module 203 includes two sets of detachable filter elements for replacing the internal filter elements without shutting down the machine. The outlet end of the filter module 203 is connected to the inlet end of the circulation pump 202. The outlet end of the circulation pump 202 is connected to two spray modules 3 through the return pipe 201, allowing the spray liquid at the bottom of the absorption vessel 2 to be circulated. A connecting pipe 204 and a connecting pipe 205 are fixedly connected to the bottom of the absorption vessel 2. The connecting pipe 205 is simultaneously connected to an external spray liquid injection device. The connecting pipe 204 and the connecting pipe 205 are... The connecting pipe 204 is fixedly connected to the two cavities at the bottom of the absorption vessel 2 and is connected to the connecting pipe 205. The connecting pipe 205 is connected to the liquid inlet of the filter module 203. An electromagnetic three-way valve 206 is provided at the connection between the connecting pipe 204 and the connecting pipe 205. The electromagnetic three-way valve 206 is used to control the circulation and backflow of the spray liquid in the two cavities of the absorption vessel 2. The connection points of the connecting pipe 204 and the connecting pipe 205 with the absorption vessel 2 are at the same height, and the distance between the connecting pipe 204 and the connecting pipe 205 and the bottom of the corresponding cavity of the absorption vessel 2 is greater than or equal to one-quarter of the height of the cavity. This is to leave space for the deposition of impurities at the bottom of the absorption vessel 2, prevent a large number of impurities from entering the circulation of the spray liquid, and thus extend the replacement rate of the filter module 203.

[0025] Reference Figures 2-4As shown, the sealing assembly includes a rotating cylinder 301, which is rotatably and sealed within the partition plate 5. The rotating cylinder 301 is rotatably and sealed within the absorption vessel 2. A drive module 302 for driving the rotating cylinder 301 to rotate is provided at the bottom of the absorption vessel 2. The drive module 302 consists of a servo motor and two spur gears. The servo motor is fixedly connected to the bottom of the absorption vessel 2. The output shaft of the servo motor and the rotating cylinder 301 are respectively fixedly connected to the two spur gears. The two spur gears mesh to realize the rotation of the rotating cylinder 301. A sealing plate 303 located inside the absorption vessel 2 is fixedly connected to the rotating cylinder 301. In this embodiment, the sealing plate 303 is rotatably and sealed within the inner wall of the absorption vessel 2. The sealing plate 303 is used to seal any cavity at the bottom of the absorption vessel 2. The rotating cylinder 301 drives the sealing plate 303 to rotate, which can change the cavity sealed within the absorption vessel 2.

[0026] Working principle: When it is necessary to spray and absorb waste gas, the principle is based on the sealing plate 303 sealing the right cavity of the absorption vessel 2. At this time, the left cavity of the absorption vessel 2 is connected to the circulation pump 202 through the connecting pipe 204. When the circulation pump 202 is turned on, the circulation pump 202 generates a suction force, which causes the spray liquid in the left cavity of the absorption vessel 2 to enter the two spray modules 3 through the connecting pipe 204, the connecting pipe 205, the filter module 203, the circulation pump 202, and the return pipe 201, so that the spray modules... Block 3 sprays the spray liquid downwards, and then begins to inject waste gas into the inlet pipe 6. The waste gas enters the absorption vessel 2 through the inlet pipe 6. The waste gas flows upwards and comes into contact with the spray liquid, which purifies the waste gas. The purified gas is discharged through the outlet pipe 7. The spray liquid, carrying impurities, eventually falls downwards into the left cavity of the absorption vessel 2. The impurities in the spray liquid in the left cavity of the absorption vessel 2 will be deposited at the bottom. After long-term use, the impurities will gradually accumulate and block the backflow of the spray liquid, thus affecting the absorption rate of the waste gas.

[0027] After the device has been used in this state for a specific period of time, the drive module 302 is turned on, causing the rotating drum 301 to rotate. The rotating drum 301 then rotates the sealing plate 303 synchronously, switching the sealing plate 303 from sealing the right cavity of the absorption vessel 2 to sealing the left cavity. Then, the drive module 302 is turned off, and the electromagnetic three-way valve 206 is controlled to isolate the spray module 3 from the spray liquid in the left and right cavities of the absorption vessel 2. At this moment, the external spray liquid injection device is turned on, allowing the spray liquid to enter the connecting pipe 205 from the outside and finally flow along the return pipe 2. 01. The spray liquid enters the two spray modules 3 and eventually falls into the right cavity of the absorption vessel 2. This continues until the spray liquid content in the right cavity is the same as that in the left cavity. At this moment, the electromagnetic three-way valve 206 opens the connection between the spray module 3 and the right cavity of the absorption vessel 2, allowing the spray liquid to carry the impurities in the waste gas into the right cavity of the absorption vessel 2 and start circulating the spray liquid inside. Then, the drain pipe 8 at the bottom of the left cavity of the absorption vessel 2 is opened, and the spray liquid in the left cavity of the absorption vessel 2 carrying the impurities deposited at the bottom is completely discharged along the drain pipe 8. Then, the drain pipe 8 is closed.

[0028] After the device has been used in this state for a specific period of time, the above steps are repeated in this cycle. The bottom of the absorption vessel 2 is divided into two chambers by the partition 5. The working states of the two chambers at the bottom of the absorption vessel 2 are switched alternately, so that one chamber is in the working state and the other chamber is in the sewage discharge state. This allows the discharge of impurities at the bottom of the absorption vessel 2 to be completed without stopping the machine, thereby increasing the absorption rate of the waste gas. This continues until the waste gas absorption and purification stops, the waste gas is stopped from being injected into the inlet pipe 6, and then the circulation pump 202 is turned off. When the waste gas needs to be purified again, the above steps are repeated. Example 2

[0029] This embodiment provides a self-cleaning waste gas absorption tower, which is a further improvement on the basis of Embodiment 1.

[0030] Reference Figures 2-5As shown, a rotating ring 401 is rotatably connected to the absorber 2 in a sealed manner. A sealing plate 303 is rotatably connected to the rotating ring 401 in a sealed manner. The sealing plate 303 does not contact the absorber 2. The rotating ring 401 is rotatably connected to the sealing plate 303 in a sealed manner. The rotating ring 401 is provided with two connecting shafts 402. In this example, the rotating ring 401 is fixedly connected to the two connecting shafts 402. A scraper 403 is fixedly connected to the bottom of the connecting shaft 402. A rotating shaft 404 is rotatably connected to the rotating cylinder 301 in a sealed manner. The rotating shaft 404 is fixedly connected to the rotating ring 401. A driving component 405 is provided at the bottom of the absorber 2. The driving component 405 is a servo motor. The output of the driving component 405 is... The output shaft is fixedly connected to the rotating shaft 404. The output shaft of the drive component 405 can drive the two scrapers 403 to rotate through the rotating shaft 404, the rotating ring 401 and the two connecting shafts 402, thereby pushing the impurities deposited at the bottom of the absorption vessel 2 to float in the spray liquid, so that the impurities can be discharged with the spray liquid. The cross-sectional shape of the two cavities in the absorption vessel 2 is fan-shaped. During the rotation, the scraper 403 can fit against the front and rear sides of the partition 5, reducing the dead angle of the scraper 403 pushing the impurities in the absorption vessel 2. The scraper 403 is fixedly connected to several stirring plates 406 through the connecting rod. When the scraper 403 swings, it can drive the stirring plates 406 to move synchronously, which is used to stir the spray liquid.

[0031] Working principle: Before opening the drain pipe 8 to allow the spray liquid carrying impurities in the cavity to be discharged, the drive unit 405 is activated. The output shaft of the drive unit 405 drives the rotating ring 401 to swing back and forth via the rotating shaft 404. Initially, the scraper 403 is located on the front side of the adjacent cavity, that is, the scraper 403 is in contact with the front side of the partition 5 (taking the scraper 403 in the right cavity as an example, the subsequent positions will not be repeated; at this time, the scraper 403 in the left cavity is located on the rear side and is in contact with the rear side of the partition 5). During this period, the rotating ring 401 drives the scraper 403 to swing backward via the connecting shaft 402 until the scraper 403 is in contact with the rear side of the partition 5. Then, the drive unit 405 drives the scraper 403 to swing forward via the rotating shaft 404, connecting shaft 402, rotating ring 401, and connecting shaft 402 until the scraper 403 is in contact with the front side of the partition 5. This reciprocating motion causes the scraper 403 to swing backward. The scraper 403 oscillates back and forth against the bottom of the absorption vessel 2. The scraper 403 pushes the impurities attached to the bottom of the absorption vessel 2 to float into the spray liquid, making it easier for the impurities to be discharged along the drain pipe 8 with the spray liquid. At the same time, during the oscillation of the scraper 403, the stirring plate 406 on it will oscillate synchronously. The stirring plate 406 pushes the spray liquid to form a shearing force, which can break large impurities into smaller impurities, making it easier for the impurities to be discharged along the drain pipe 8. After oscillating for a certain period of time, the drive component 405 drives the scraper 403 to reset through the rotating shaft 404, connecting shaft 402, rotating ring 401 and connecting shaft 402, so that the scraper 403 swings to the front side and attaches to the front side of the partition plate 5. Then the drive component 405 is turned off, and the drain pipe 8 is turned on, so that the spray liquid in the cavity of the absorption vessel 2 carries the impurities to be discharged along the drain pipe 8. When it is necessary to discharge the impurities in the cavity again, the above steps are repeated. Example 3

[0032] This embodiment provides a self-cleaning waste gas absorption tower, which is a further improvement on embodiment 2.

[0033] Reference Figure 2 and Figures 6-8As shown, both connecting shafts 402 are slidably connected to the rotating ring 401. A first elastic element 501, a tension spring, is provided between each connecting shaft 402 and the rotating ring 401. The first elastic element 501 is always in a charged state and is used to drive the adjacent connecting shafts 402. Two symmetrically distributed fixed arc plates 502 are fixedly connected to the partition 5. The two fixed arc plates 502 are located in two cavities at the bottom of the absorption vessel 2. The fixed arc plates 502... A driving groove 503 is provided, and a locking block 504 is slidably connected to the connecting shaft 402. A second elastic element 505, which is a spring, is provided between the locking block 504 and the connecting shaft 402. The second elastic element 505 is always in a compressed state. The second elastic element 505 drives the locking block 504 to adapt to the depth change of the driving groove 503. The locking block 504 slides in the adjacent driving groove 503. The driving groove 503 consists of an upper arc-shaped groove 5031, two symmetrically distributed inclined grooves 5032, and symmetrical... The system consists of two lower arc-shaped grooves 5033 and two symmetrically distributed vertical grooves 5034. The scraper 403 swings from front to back as a reference. The locking block 504 slides backward from the front end of the lower arc-shaped groove 5033, passes through the front inclined groove 5032, enters the middle of the upper arc-shaped groove 5031, slides backward along the middle of the upper arc-shaped groove 5031, and then falls down along the rear vertical groove 5034 to the rear end of the lower arc-shaped groove 5033. The trajectory of the scraper 403 swinging from back to front is perpendicular to the aforementioned trajectory. The symmetrical distribution is self-explanatory. The two ends of the upper arc-shaped groove 5031 are connected to its middle part through the vertical groove 5034, the lower arc-shaped groove 5033 and the inclined groove 5032. The depth of the upper arc-shaped groove 5031 gradually becomes shallower from the middle to the two ends. The depths of the inclined groove 5032, the lower arc-shaped groove 5033 and the vertical groove 5034 are all consistent with the shallow depth of the upper arc-shaped groove 5031. This is to prevent the locking block 504 from entering the inclined groove 5032 when sliding along the upper arc-shaped groove 5031, thus changing the movement trajectory of the locking block 504.

[0034] Working principle: When the scraper 403 swings back and forth, initially the scraper 403 is located on the front side of the adjacent cavity, that is, the scraper 403 is in contact with the front side of the partition 5 (taking the scraper 403 in the right cavity as an example, the subsequent positions will not be repeated; at this time, the scraper 403 in the left cavity is located on the rear side and is in contact with the rear side of the partition 5), and the locking block 504 is located at the connection between the front vertical groove 5034 and the front lower arc groove 5033. When the scraper 403 swings from front to back, the locking block 504 moves along the front lower arc groove. Sliding at position 5033, scraper 403 slides against the bottom of absorption vessel 2, pushing impurities closer to drain pipe 8. This continues until the locking block 504 slides to the connection between the lower front arc groove 5033 and the front inclined groove 5032. The locking block 504 then begins to slide upward along the front inclined groove 5032 and finally enters the upper arc groove 5031. Simultaneously, the first elastic element 501 compresses, causing scraper 403 to move upward and separate from absorption vessel 2, stopping the pushing of impurities. Then, the locking block 504 continues to slide along the upper arc groove 5031. The scraper 403 slides and adheres to the rear side of the partition 5. At this moment, the locking block 504 slides to the connection point between the upper arc groove 5031 and the rear vertical groove 5034. The first elastic element 501 pulls the connecting shaft 402, causing the connecting shaft 402 to drive the locking block 504 to slide downward along the rear vertical groove 5034. The locking block 504 slides to the connection point between the rear vertical groove 5034 and the rear lower arc groove 5033. The scraper 403 moves downward and adheres to the absorption vessel 2 again. Then, the scraper 403 resets and rotates, causing the locking block... 504 is reset to its initial position along the rear lower arc groove 5033, rear inclined groove 5032, upper arc groove 5031 and front vertical groove 5034, symmetrically resetting the running trajectory of scraper 403. This allows scraper 403 to push impurities into the absorption vessel 2 during the first half of its swing from front to back and from back to front, thereby pushing the impurities towards the drain pipe 8 and further improving the degree of impurity discharge. This process is repeated, and the adjacent drain pipe 8 is opened simultaneously during the above steps, using the flow of spray liquid to discharge the impurities.

[0035] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A self-cleaning waste gas absorption tower, comprising a support frame (1), wherein an absorption vessel (2) is fixedly connected to the support frame (1), and a spray module (3) and a packing layer (4) are provided inside the absorption vessel (2), characterized in that, A partition (5) is fixedly connected to the bottom of the absorption vessel (2). The partition (5) divides the bottom of the absorption vessel (2) into two cavities. An air inlet pipe (6) and an air outlet pipe (7) are fixedly connected to the side and top of the absorption vessel (2), respectively. Two drain pipes (8) are fixedly connected to the bottom of the absorption vessel (2). The two cavities at the bottom of the absorption vessel (2) are respectively connected to the two drain pipes (8). A circulation assembly for recirculating the spray liquid is provided on the absorption vessel (2). A sealing assembly for intermittently sealing different cavities at the bottom of the absorption vessel (2) is provided in the support (1). The absorption vessel (2) is sealed and rotatably connected to a rotating ring (401). A sealing plate (303) is sealed and rotatably connected to the rotating ring (401). The rotating ring (401) is provided with two connecting shafts (402). A scraper (403) is fixedly connected to the connecting shafts (402). A rotating shaft (404) is sealed and rotatably connected to the rotating cylinder (301). The rotating shaft (404) is fixedly connected to the rotating ring (401). A driving component (405) is provided at the bottom of the absorption vessel (2). The output shaft of the driving component (405) is fixedly connected to the rotating shaft (404). The output shaft of the drive unit (405) drives the rotating ring (401) to swing back and forth via the rotating shaft (404); The scraper (403) is fixedly connected to several agitator plates (406) via a connecting rod, which are used to agitate the spray liquid; Both connecting shafts (402) are slidably connected to the rotating ring (401), and a first elastic element (501) is provided between the two connecting shafts (402) and the rotating ring (401). The partition (5) is fixedly connected to two symmetrically distributed fixed arc plates (502). The two fixed arc plates (502) are respectively located in two cavities at the bottom of the absorption vessel (2). The fixed arc plates (502) are provided with driving grooves (503). The connecting shaft (402) is slidably connected to a locking block (504). A second elastic element (505) is provided between the locking block (504) and the connecting shaft (402). The locking block (504) slides in the adjacent driving grooves (503). The driving groove (503) is composed of an upper arc-shaped groove (5031), two symmetrically distributed inclined grooves (5032), two symmetrically distributed lower arc-shaped grooves (5033), and two symmetrically distributed vertical grooves (5034). The two ends of the upper arc-shaped groove (5031) are connected to its middle part through the vertical grooves (5034), the lower arc-shaped grooves (5033), and the inclined grooves (5032). The depth of the upper arc-shaped groove (5031) gradually becomes shallower from the middle to the two ends. The depths of the inclined grooves (5032), the lower arc-shaped grooves (5033), and the vertical grooves (5034) are all consistent with the shallow depth of the upper arc-shaped groove (5031).

2. A self-cleaning waste gas absorption tower according to claim 1, characterized in that, The circulation assembly includes a return pipe (201), which is fixedly connected to the absorption vessel (2). The support (1) is fixedly connected to a circulation pump (202) and a filter module (203). The outlet end of the filter module (203) is connected to the inlet end of the circulation pump (202). The outlet end of the circulation pump (202) is connected to the spray module (3) through the return pipe (201). The absorption vessel (2) is fixedly connected to a connecting pipe (204) and a connecting pipe (205). The connecting pipe (204) and the connecting pipe (205) are respectively connected to two cavities at the bottom of the absorption vessel (2). The connecting pipe (204) and the connecting pipe (205) are fixedly connected and connected. The connecting pipe (205) is connected to the inlet end of the filter module (203). An electromagnetic three-way valve (206) is provided at the connection between the connecting pipe (204) and the connecting pipe (205).

3. A self-cleaning waste gas absorption tower according to claim 2, characterized in that, The connection points of the connecting pipe (204) and the connecting pipe (205) with the absorption vessel (2) are at the same height, and the distance between the connecting pipe (204) and the connecting pipe (205) and the bottom of the cavity of the absorption vessel (2) is greater than or equal to one-quarter of the cavity height.

4. A self-cleaning waste gas absorption tower according to claim 1, characterized in that, The sealing assembly includes a rotating cylinder (301), which is rotatably and sealed within the partition plate (5). The rotating cylinder (301) is rotatably and sealed within the absorption vessel (2). The bottom of the absorption vessel (2) is provided with a drive module (302) for driving the rotating cylinder (301) to rotate. The rotating cylinder (301) is fixedly connected to a sealing plate (303) located inside the absorption vessel (2). The sealing plate (303) is used to seal any cavity at the bottom of the absorption vessel (2).

5. A self-cleaning waste gas absorption tower according to claim 1, characterized in that, The cross-sectional shape of the two cavities inside the absorption vessel (2) is fan-shaped.

Images