Sodium hydrosulfide absorption reaction device and method

Abstract

The invention relates to the technical field of absorption reaction, and discloses a sodium hydrosulfide absorption reaction device and method.The sodium hydrosulfide absorption reaction device comprises a tower body and further comprises an L-shaped gas inlet pipe, the surface of the transverse edge of the gas inlet pipe is fixedly installed on the inner wall of the surface of the tower body, and the tail end of the vertical edge of the gas inlet pipe is located in a sodium hydrosulfide solution; the automatic control assembly is arranged on the air inlet pipe, and the automatic control assembly is used for controlling the air inlet amount in the air inlet pipe; the filler layer is fixedly mounted in the tower body; the spraying assembly is arranged on the tower body, and the spraying assembly is used for filtering gas entering the tower body. According to the invention, the flow of gas in the gas inlet pipe can be always maintained within a constant vertical range, so that the situation that a sodium hydrosulfide spray liquid cannot effectively perform absorption reaction on more gas due to more gas entering the tower body from the gas inlet pipe at one time is avoided, and the gas treatment completeness of sodium hydrosulfide is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of absorption reaction, and in particular to a sodium hydrosulfide absorption reaction device and method. Background Art

[0002] Sodium hydrosulfide (NaHS) absorption reaction device is mainly used for gas absorption and liquid-gas reaction process, especially when dealing with acidic gases in the gas (such as sulfur dioxide, ammonia, hydrochloric acid, etc.), sodium hydrosulfide as an absorbent can effectively absorb or convert these harmful gases.

[0003] At present, when sodium hydrosulfide is used to treat flue gas, the amount of gas entering the tower body cannot be controlled. If too much gas enters the tower body at one time, the sodium hydrosulfide will not be able to absorb and react to harmful substances in the gas in time, reducing the completeness and effect of gas treatment. Therefore, it is urgent to design a sodium hydrosulfide absorption reaction device. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and to propose a sodium hydrosulfide absorption reaction device and method.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A sodium hydrosulfide absorption reaction device comprises a tower body, wherein a sodium hydrosulfide solution is arranged at the bottom of the tower body, and further comprises: The air inlet pipe is L-shaped, the horizontal side of the air inlet pipe is fixedly installed on the inner wall of the tower body, and the end of the vertical side of the air inlet pipe is located in the sodium hydrosulfide solution; An automatic control component, which is arranged on the air intake pipe and is used to control the air intake amount inside the air intake pipe; Packing layer: the packing layer is fixedly installed inside the tower body; A spray assembly is arranged on the tower body and is used for filtering the gas entering the tower body.

[0006] As a further technical solution of the present invention, the automatic control component includes: a first disc, the first disc is fixedly mounted on the inner wall of the horizontal side of the intake pipe, a second disc is rotatably mounted on the inner side of the first disc, and a third bevel gear is fixedly mounted on the side of the second disc away from the first disc, and a plurality of annular through grooves are provided on the sides of the first disc and the second disc.

[0007] As a further technical solution of the present invention, a fourth bevel gear is meshed with the side surface of the third bevel gear, a rotating rod is vertically fixedly installed at the top center of the fourth bevel gear, and the surface of the rotating rod is rotatably installed on the inner wall of the intake pipe surface, the top end of the rotating rod passes through the intake pipe, the first bevel gear is fixedly installed on the top end of the rotating rod, and the second bevel gear is meshed with the side surface of the first bevel gear.

[0008] As a further technical solution of the present invention, a first gear is fixedly installed at the center of the side surface of the second bevel gear away from the first bevel gear, an L-shaped column is rotatably installed at the side surface of the first gear away from the center of the side surface of the second bevel gear, and the end of the vertical side of the L-shaped column is fixedly installed on the surface of the intake pipe, a spring rod is vertically installed on the top of the horizontal side of the intake pipe, the fixed end and the telescopic end of the spring rod are slidably connected by a spline, and a fixed block is fixedly installed on the top of the telescopic end of the spring rod, a rack is vertically fixedly installed on the top of the fixed block, the rack is meshed with the first gear, and a slide groove is vertically opened on the back side of the rack, and a movable block is slidably installed inside the slide groove.

[0009] As a further technical solution of the present invention, a fan blade is rotatably installed inside the horizontal side of the air intake pipe, a T-shaped column is vertically arranged above the horizontal side of the air intake pipe, and the vertical side surface of the T-shaped column is rotatably installed inside the inner wall of the air intake pipe surface, the end of the vertical side of the T-shaped column is fixedly installed at the top center of the fan blade, a fixed plate is fixedly sleeved on the vertical side surface of the T-shaped column, and the fixed plate is located above the horizontal side of the air intake pipe.

[0010] As a further technical solution of the present invention, a sliding plate is slidably sleeved on the vertical side of the T-shaped column, the sliding plate is located above the fixed plate, and a straight spring is sleeved on the surface of the vertical side of the T-shaped column, the two ends of the straight spring are respectively opposed to the fixed plate and the sliding plate, a shift plate is horizontally fixedly installed on the surface of the sliding plate, and the movable block is fixedly installed on the side of the shift plate.

[0011] As a further technical solution of the present invention, an annular groove is provided at the bottom of the sliding plate, and a plurality of sliding blocks are installed in an annular sliding manner inside the annular groove, and a first connecting rod is rotatably installed at the bottom of each sliding block, a rectangular block is rotatably installed on the side of each first connecting rod, and a second connecting rod is also rotatably installed on the side of each rectangular block, and the end of each second connecting rod is rotatably installed on the top of the fixed plate.

[0012] As a further technical solution of the present invention, the spray assembly includes: a nozzle, which is fixedly installed on the top of the tower body, the nozzle is located above the packing layer, and a liquid pump is installed at the bottom of the tower body, a U-shaped tube is installed outside the tower body, and both ends of the U-shaped tube are respectively connected and installed on the end of the liquid pump and the nozzle.

[0013] As a further technical solution of the present invention, a pipe body is installed in communication with the bottom end of the side surface of the tower body, and an air outlet pipe is installed in communication with the top of the tower body.

[0014] A method for using a sodium hydrosulfide absorption reaction device comprises the following steps: S1: First, place the sodium hydrosulfide solution at the bottom of the tower through the pipe body, then start the liquid pump to make the sodium hydrosulfide solution pass through the U-shaped pipe to the nozzle and spray it out in the form of water mist, so as to achieve the absorption and conversion of harmful gases in the gas; S2: The gas to be filtered then enters the tower through the air inlet pipe, and the gas is emitted into the tower in the form of bubbles when passing through the sodium hydrosulfide solution, so as to achieve preliminary absorption and transformation of harmful substances in the gas, and then further absorption and transformation of harmful substances are achieved through spraying by the nozzle again; S3: When the gas passes through the intake pipe, it will drive the fan blades to rotate, the rotation of the fan blades will drive the T-shaped column to rotate, the rotation of the T-shaped column will drive the fixed plate to rotate, the rotation of the fixed plate will drive the second connecting rod to rotate, the rotation of the second connecting rod will drive the rectangular block and the first connecting rod to rotate. Due to the centrifugal force, the rectangular block will move away from the T-shaped column while rotating. The movement of the rectangular block drives the slider and the sliding plate to move downward through the first connecting rod and causes the straight spring to generate elastic force. The downward movement of the sliding plate drives the paddle plate to move downward, and the downward movement of the paddle plate drives the movable block to slide inside the slide slot. When the gas flow rate inside the intake pipe is normal, the centrifugal force applied to the rectangular block just causes the paddle plate and the movable block to move to the very end of the slide slot. If the gas flow rate through the intake pipe is faster, the centrifugal force applied to the rectangular block will increase, the sliding plate will continue to move downward for a distance, and the sliding plate will continue to move downward. Continuing to move downward will drive the paddle plate and the movable block to continue to move downward, the movable block moves downward and drives the rack to move downward and causes the spring rod to generate elastic force, the rack moves downward and drives the first gear to rotate, the first gear rotates and drives the second bevel gear and the first bevel gear to rotate, the first bevel gear rotates through the rotating rod to drive the fourth bevel gear and the third bevel gear to rotate, the third bevel gear rotates and drives the second disc to rotate, the second disc rotates and cooperates with the first disc, which will make the through groove formed by the first disc and the second disc smaller, further reducing the intake amount of gas in the intake pipe, and then if the gas flow rate through the intake pipe is slow, the fan blade rotation speed will decrease, the centrifugal force on the rectangular block will decrease, and the elastic force generated by the spring rod and the straight spring will cause the paddle plate, the movable block and the rack to move upward, further making the through groove formed by the first disc and the second disc larger; S4: The gas flow rate inside the air inlet pipe can be maintained within a constant vertical range, thereby preventing a large amount of gas from entering the tower body from the air inlet pipe at one time, causing the sodium hydrosulfide spray liquid to be unable to effectively absorb and react to a large amount of gas.

[0015] The beneficial effects of the present invention are: Firstly, the present invention can maintain the gas flow rate inside the air inlet pipe within a constant vertical range through the setting of the automatic control component, thereby avoiding the situation that a large amount of gas enters the tower body from the air inlet pipe at one time, causing the sodium hydrosulfide spray liquid to be unable to effectively absorb and react a large amount of gas, thereby improving the completeness of the gas treatment by sodium hydrosulfide; Secondly, the present invention controls the size of the through groove formed by the first disc and the second disc by changing the gas flow rate inside the air inlet pipe, and further changes the amount of gas inside the air inlet pipe entering the tower body, thereby avoiding a large amount of gas entering the tower body and preventing the spray liquid from fully absorbing and reacting to harmful substances in the gas in a timely manner, thereby improving the use effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a sodium hydrosulfide absorption reaction device proposed by the present invention; Figure 2 for Figure 1 A magnified schematic diagram of part A; Figure 3 A schematic diagram of a tower cross-sectional structure of a sodium hydrosulfide absorption reaction device proposed by the present invention; Figure 4 for Figure 3 A magnified schematic diagram of part B; Figure 5 This is a schematic diagram of the cross-sectional structure of an intake pipe of a sodium hydrosulfide absorption reaction device proposed by the present invention; Figure 6 for Figure 5 A magnified schematic diagram of part C; Figure 7 The present invention provides a schematic structural diagram of a sodium hydrosulfide absorption reaction device after removing the air inlet pipe.

[0017] In the figure: 1. tower body; 2. air inlet pipe; 3. pipe body; 4. air outlet pipe; 5. T-shaped column; 6. sliding plate; 7. fixed plate; 8. first connecting rod; 9. second connecting rod; 10. rectangular block; 11. straight spring; 12. paddle plate; 13. rotating rod; 14. first bevel gear; 15. second bevel gear; 16. first gear; 17. rack; 18. L-shaped column; 19. liquid pump; 20. U-shaped tube; 21. nozzle; 22. packing layer; 23. spring rod; 24. first disc; 25. second disc; 26. third bevel gear; 27. fourth bevel gear; 28. fan blade; 29. ​​annular groove; 30. slider; 31. slide groove. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Please see attached Figure 1 -Attached Figure 7 A sodium hydrosulfide absorption reaction device comprises a tower body 1, and a sodium hydrosulfide solution is provided at the bottom of the tower body 1, and also comprises: an air inlet pipe 2, an automatic control component, a packing layer 22 and a spray component, the air inlet pipe 2 is L-shaped, the horizontal surface of the air inlet pipe 2 is fixedly installed on the inner wall of the tower body 1, and the end of the vertical side of the air inlet pipe 2 is located in the sodium hydrosulfide solution, the automatic control component is arranged on the air inlet pipe 2, and the automatic control component is used to control the air intake amount inside the air inlet pipe 2, the packing layer 22 is fixedly installed inside the tower body 1, the spray component is arranged on the tower body 1, and the spray component is used to filter the gas entering the tower body 1; As mentioned above, the gas to be filtered enters the interior of the tower body 1 through the air inlet pipe 2, and the gas is emitted into the interior of the tower body 1 in the form of bubbles when passing through the sodium hydrosulfide solution, so as to achieve preliminary absorption and conversion of harmful substances in the gas.

[0021] Please see attached Figure 1 -Attached Figure 7In a preferred embodiment, the automatic control component includes: a first disc 24, the first disc 24 is fixedly mounted on the inner wall of the horizontal side of the intake pipe 2, a second disc 25 is rotatably mounted on the inner side of the first disc 24, and a third bevel gear 26 is fixedly mounted on the side of the second disc 25 away from the first disc 24, a plurality of annular through grooves are provided on the sides of the first disc 24 and the second disc 25, a fourth bevel gear 27 is meshed on the side of the third bevel gear 26, a rotating rod 13 is vertically fixedly mounted at the top center of the fourth bevel gear 27, and the surface of the rotating rod 13 is rotatably mounted on the inner wall of the surface of the intake pipe 2, and the top of the rotating rod 13 The end passes through the intake pipe 2, a first bevel gear 14 is fixedly installed on the top of the rotating rod 13, and a second bevel gear 15 is meshed with the side of the first bevel gear 14, a first gear 16 is fixedly installed at the center of the side of the second bevel gear 15 away from the first bevel gear 14, an L-shaped column 18 is rotatably installed at the side of the first gear 16 away from the center of the side of the second bevel gear 15, and the end of the vertical side of the L-shaped column 18 is fixedly installed on the surface of the intake pipe 2, a spring rod 23 is vertically installed on the top of the horizontal side of the intake pipe 2, the fixed end and the telescopic end of the spring rod 23 are connected by spline sliding, and a fixed block is fixedly installed on the top of the telescopic end of the spring rod 23, fixed A rack 17 is vertically fixedly installed on the top of the block, the rack 17 is meshed with the first gear 16, and a slide groove 31 is vertically opened on the back of the rack 17, and a movable block is slidably installed inside the slide groove 31, and a fan blade 28 is rotatably installed inside the horizontal side of the air intake pipe 2, a T-shaped column 5 is vertically arranged above the horizontal side of the air intake pipe 2, and the vertical side surface of the T-shaped column 5 is rotatably installed on the inner wall of the surface of the air intake pipe 2, and the vertical side end of the T-shaped column 5 is fixedly installed at the center of the top of the fan blade 28, and the vertical side surface of the T-shaped column 5 is fixedly sleeved with a fixed plate 7, and the fixed plate 7 is located above the horizontal side of the air intake pipe 2, and the vertical side of the T-shaped column 5 is slidably sleeved with a sliding plate 6, and the sliding plate 6 is located on the fixed plate 7, and a straight spring 11 is sleeved on the vertical side surface of the T-shaped column 5, and the two ends of the straight spring 11 are respectively opposed to the fixed plate 7 and the sliding plate 6, and a paddle 12 is fixedly installed horizontally on the surface of the sliding plate 6, and the movable block is fixedly installed on the side of the paddle 12, and an annular groove 29 is opened at the bottom of the sliding plate 6, and a plurality of sliders 30 are installed in a circular sliding manner inside the annular groove 29, and a first connecting rod 8 is rotatably installed at the bottom of each slider 30, and a rectangular block 10 is rotatably installed on the side of each first connecting rod 8, and a second connecting rod 9 is also rotatably installed on the side of each rectangular block 10, and the end of each second connecting rod 9 is rotatably installed on the top of the fixed plate 7; Preferably, the gas flow rate inside the air inlet pipe 2 can be maintained within a constant vertical range, thereby preventing a large amount of gas from entering the tower body 1 from the air inlet pipe 2 at one time, causing the sodium hydrosulfide spray liquid to be unable to effectively absorb and react with the large amount of gas.

[0022] Please see attached Figure 1 -Attached Figure 4In a preferred embodiment, the spray assembly includes: a spray head 21, which is fixedly installed on the top of the tower body 1, and the spray head 21 is located above the packing layer 22, and a liquid pump 19 is installed at the bottom of the tower body 1, and a U-shaped tube 20 is installed outside the tower body 1, and the two ends of the U-shaped tube 20 are connected and installed on the end of the liquid pump 19 and the spray head 21 respectively; Specifically, the liquid pump 19 allows the sodium hydrosulfide solution to pass through the U-shaped tube 20 to the nozzle 21 and be sprayed out in the form of water mist, thereby achieving absorption and conversion of harmful gases in the gas.

[0023] Please refer to the attached Figure 1 In a preferred embodiment, a pipe body 3 is installed at the bottom end of the side of the tower body 1 , and an air outlet pipe 4 is installed at the top of the tower body 1 .

[0024] The working principle of the present invention is as follows: firstly, sodium hydrosulfide solution is placed at the bottom of the tower body 1 through the pipe body 3, and then the liquid pump 19 is started to spray the sodium hydrosulfide solution through the U-shaped pipe 20 to the nozzle 21 in the form of water mist, so as to realize the absorption and conversion of harmful gases in the gas; Then the gas to be filtered enters the tower body 1 through the air inlet pipe 2, and the gas is emitted into the tower body 1 in the form of bubbles when passing through the sodium hydrosulfide solution, so as to achieve preliminary absorption and transformation of harmful substances in the gas, and then the harmful substances are further absorbed and transformed by spraying through the nozzle 21 again; When the gas passes through the intake pipe 2, it will drive the fan blades 28 to rotate, and the rotation of the fan blades 28 will drive the T-shaped column 5 to rotate, and the rotation of the T-shaped column 5 will drive the fixed plate 7 to rotate, and the rotation of the fixed plate 7 will drive the second connecting rod 9 to rotate, and the rotation of the second connecting rod 9 will drive the rectangular block 10 and the first connecting rod 8 to rotate. Due to the effect of centrifugal force, the rectangular block 10 will also move in the direction away from the T-shaped column 5 while rotating. The rectangular block 10 moves through the first connecting rod 8 to drive the slider 30 and the sliding plate 6 to move downward and make the straight spring 11 generate elastic force. The sliding plate 6 moves downward and drives the paddle 12 to move downward. The paddle 12 moves downward and drives the movable block to slide inside the slide groove 31. When the gas flow rate inside the intake pipe 2 is normal, the centrifugal force applied to the rectangular block 10 just makes the paddle 12 and the movable block move to the extreme end of the slide groove 31. If the gas flow rate through the intake pipe 2 is faster, the centrifugal force applied to the rectangular block 10 becomes larger, and the sliding plate 6 will continue to move downward for a distance. The continued downward movement of the sliding plate 6 will bring The movable plate 12 and the movable block continue to move downward, and the movable block moves downward to drive the rack 17 to move downward and make the spring rod 23 generate elastic force. The rack 17 moves downward to drive the first gear 16 to rotate. The rotation of the first gear 16 drives the second bevel gear 15 and the first bevel gear 14 to rotate. The rotation of the first bevel gear 14 drives the fourth bevel gear 27 and the third bevel gear 26 to rotate through the rotating rod 13. The rotation of the third bevel gear 26 drives the second disc 25 to rotate. The rotation of the second disc 25 and the first disc 24 will make the through groove formed by the first disc 24 and the second disc 25 smaller, further reducing the intake amount of the gas in the intake pipe 2. If the gas flow rate through the intake pipe 2 is slow, the rotation speed of the fan blade 28 will decrease, and the centrifugal force on the rectangular block 10 will decrease. The elastic force generated by the spring rod 23 and the straight spring 11 will cause the plate 12, the movable block and the rack 17 to move upward, further making the through groove formed by the first disc 24 and the second disc 25 larger. In summary, the gas flow rate inside the air inlet pipe 2 can be maintained within a constant vertical range, thereby avoiding a situation in which a large amount of gas enters the tower body 1 from the air inlet pipe 2 at one time, resulting in the inability of the sodium hydrosulfide spray liquid to effectively absorb and react a large amount of gas, thereby improving the completeness of the gas treatment by sodium hydrosulfide.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sodium hydrosulfide absorption reaction device, comprising a tower body (1), wherein a sodium hydrosulfide solution is provided at the bottom of the tower body (1), characterized in that: Also includes: An air intake pipe (2), wherein the air intake pipe (2) is L-shaped, the horizontal side surface of the air intake pipe (2) is fixedly mounted on the inner wall of the tower body (1), and the vertical side end of the air intake pipe (2) is located in the sodium hydrosulfide solution; An automatic control component, the automatic control component being arranged on the air intake pipe (2), and being used to control the air intake amount inside the air intake pipe (2); A packing layer (22), wherein the packing layer (22) is fixedly installed inside the tower body (1); A spray assembly is arranged on the tower body (1), and the spray assembly is used to filter the gas entering the tower body (1).

2. A sodium hydrosulfide absorption reaction device according to claim 1, characterized in that, The automatic control component comprises: a first disc (24), the first disc (24) being fixedly mounted on the inner wall of the horizontal side of the intake pipe (2), a second disc (25) being rotatably mounted inside the first disc (24), and a third bevel gear (26) being fixedly mounted on the side of the second disc (25) away from the first disc (24), and a plurality of annular through grooves penetrating the side surfaces of the first disc (24) and the second disc (25).

3. A sodium hydrosulfide absorption reaction device according to claim 2, characterized in that, The third bevel gear (26) is meshed with a fourth bevel gear (27) on its side, a rotating rod (13) is vertically fixedly mounted at the center of the top of the fourth bevel gear (27), and the surface of the rotating rod (13) is rotatably mounted on the inner wall of the surface of the intake pipe (2), the top end of the rotating rod (13) passes through the intake pipe (2), a first bevel gear (14) is fixedly mounted on the top end of the rotating rod (13), and a second bevel gear (15) is meshed with its side.

4. A sodium hydrosulfide absorption reaction device according to claim 3, characterized in that, The first gear (16) is fixedly mounted at the center of the side of the second bevel gear (15) away from the first bevel gear (14); an L-shaped column (18) is rotatably mounted at the center of the side of the first gear (16) away from the second bevel gear (15); and the end of the vertical side of the L-shaped column (18) is fixedly mounted on the surface of the intake pipe (2); a spring rod (23) is vertically mounted on the top of the horizontal side of the intake pipe (2); the fixed end and the telescopic end of the spring rod (23) are slidably connected via a spline; and a fixed block is fixedly mounted on the top of the telescopic end of the spring rod (23); a rack (17) is vertically fixedly mounted on the top of the fixed block; the rack (17) is meshed with the first gear (16); and a slide groove (31) is vertically opened on the back of the rack (17); and a movable block is slidably mounted inside the slide groove (31).

5. A sodium hydrosulfide absorption reaction device according to claim 4, characterized in that, A fan blade (28) is rotatably mounted inside the horizontal side of the air intake pipe (2), a T-shaped column (5) is vertically arranged above the horizontal side of the air intake pipe (2), and the vertical side surface of the T-shaped column (5) is rotatably mounted inside the inner wall of the surface of the air intake pipe (2), the vertical side end of the T-shaped column (5) is fixedly mounted at the top center of the fan blade (28), and a fixing plate (7) is fixedly sleeved on the vertical side surface of the T-shaped column (5), and the fixing plate (7) is located above the horizontal side of the air intake pipe (2).

6. A sodium hydrosulfide absorption reaction device according to claim 5, characterized in that, The vertical side of the T-shaped column (5) is slidably sleeved with a sliding plate (6), the sliding plate (6) is located above the fixed plate (7), and the vertical side surface of the T-shaped column (5) is sleeved with a straight spring (11), the two ends of the straight spring (11) are respectively opposed to the fixed plate (7) and the sliding plate (6), and a shifting plate (12) is fixedly installed horizontally on the surface of the sliding plate (6), and the movable block is fixedly installed on the side of the shifting plate (12).

7. A sodium hydrosulfide absorption reaction device according to claim 6, characterized in that, The bottom of the sliding plate (6) is provided with an annular groove (29), and a plurality of sliding blocks (30) are slidably mounted in an annular shape inside the annular groove (29), and a first connecting rod (8) is rotatably mounted on the bottom of each sliding block (30), and a rectangular block (10) is rotatably mounted on the side of each first connecting rod (8), and a second connecting rod (9) is rotatably mounted on the side of each rectangular block (10), and the end of each second connecting rod (9) is rotatably mounted on the top of the fixed plate (7).

8. A sodium hydrosulfide absorption reaction device according to claim 7, characterized in that, The spray assembly comprises: a spray head (21), the spray head (21) being fixedly mounted on the top of the tower body (1), the spray head (21) being located above the packing layer (22), and a liquid pump (19) being mounted on the bottom of the tower body (1), a U-shaped tube (20) being mounted on the outside of the tower body (1), and two ends of the U-shaped tube (20) being connected and mounted on the end of the liquid pump (19) and the spray head (21) respectively.

9. A sodium hydrosulfide absorption reaction device according to claim 8, characterized in that, The bottom end of the side surface of the tower body (1) is connected to a pipe body (3) installed thereon, and the top of the tower body (1) is connected to an air outlet pipe (4) installed thereon.

10. The method for using a sodium hydrosulfide absorption reaction device according to claim 9, characterized in that: The following steps are involved: S1: First, a sodium hydrosulfide solution is placed at the bottom of the tower body (1) through a pipe body (3), and then a liquid pump (19) is started to allow the sodium hydrosulfide solution to pass through a U-shaped pipe (20) to a nozzle (21) and be sprayed out in the form of water mist, thereby achieving absorption and conversion of harmful gases in the gas; S2: The gas to be filtered then enters the tower body (1) through the air inlet pipe (2), and the gas is emitted into the tower body (1) in the form of bubbles when passing through the sodium hydrosulfide solution, so as to achieve preliminary absorption and transformation of harmful substances in the gas, and then is sprayed again through the nozzle (21) to further absorb and transform the harmful substances; S3: When the gas passes through the air inlet pipe (2), the fan blade (28) is driven to rotate. The rotation of the fan blade (28) drives the T-shaped column (5) to rotate. The rotation of the T-shaped column (5) drives the fixed plate (7) to rotate. The rotation of the fixed plate (7) drives the second connecting rod (9) to rotate. The rotation of the second connecting rod (9) drives the rectangular block (10) and the first connecting rod (8) to rotate. Due to the centrifugal force, the rectangular block (10) moves away from the T-shaped column (5) while rotating. The movement of the rectangular block (10) drives the slider (30) and the sliding plate (6) through the first connecting rod (8). ) moves downward and causes the straight spring (11) to generate elastic force, the sliding plate (6) moves downward and drives the paddle (12) to move downward, the paddle (12) moves downward and drives the movable block to slide inside the slide groove (31), when the gas flow rate inside the intake pipe (2) is normal, the centrifugal force on the rectangular block (10) just causes the paddle (12) and the movable block to move to the end of the slide groove (31), if the gas flow rate through the intake pipe (2) is faster, the centrifugal force on the rectangular block (10) becomes larger, the sliding plate (6) will continue to move downward for a distance, and the sliding plate (6) continues to move downward. The movement drives the paddle plate (12) and the movable block to continue to move downward, the movable block moves downward, drives the rack (17) to move downward, and causes the spring rod (23) to generate elastic force, the rack (17) moves downward, drives the first gear (16) to rotate, the first gear (16) rotates, drives the second bevel gear (15) and the first bevel gear (14) to rotate, the first bevel gear (14) rotates through the rotating rod (13), drives the fourth bevel gear (27) and the third bevel gear (26) to rotate, the third bevel gear (26) rotates, drives the second disc (25) to rotate, and the second disc (25) ) rotates and cooperates with the first disc (24), which makes the through groove formed by the first disc (24) and the second disc (25) smaller, further reducing the intake amount of the gas in the intake pipe (2). If the gas flow rate through the intake pipe (2) is slow, the rotation speed of the fan blade (28) is reduced, the centrifugal force on the rectangular block (10) is reduced, and the elastic force generated by the spring rod (23) and the straight spring (11) causes the paddle (12), the movable block and the rack (17) to move upward, further making the through groove formed by the first disc (24) and the second disc (25) larger; S4: The gas flow rate inside the air inlet pipe (2) can be maintained within a constant vertical range, thereby preventing a large amount of gas from entering the tower body (1) from the air inlet pipe (2) at one time, causing the sodium hydrosulfide spray liquid to be unable to effectively absorb the large amount of gas.

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