Bleaching powder production tail gas absorption device

Abstract

The invention discloses a bleaching powder production tail gas absorption device, relates to the field of tail gas treatment, and solves the problem that an existing tail gas absorption device is difficult to continuously treat tail gas, the bleaching powder production tail gas absorption device comprises a device shell and two annular discs mounted on the inner side of the device shell, and a plurality of treatment tanks are fixedly mounted between the two annular discs; a top cover is mounted at the top of the treatment tank, an air inlet pipe is mounted at the bottom of the device shell, an aeration disc is mounted at the bottom of the treatment tank, and a first exhaust pipe is mounted at the top of an annular disc; the gas inlet mechanism is used for continuously treating tail gas conveyed by the first exhaust pipe, and the gas inlet mechanism is mounted on the inner side of the device shell; through the gas inlet mechanism, the two annular discs can drive the multiple treatment tanks to rotate intermittently, position replacement of the treatment tanks is achieved, tail gas can be sequentially injected into the treatment tanks through the gas inlet pipe, the treated tail gas is sequentially exhausted from the first exhaust pipe, and therefore the effect of continuously treating the tail gas is achieved.

Description

Technical Field

[0001] The present invention relates to the field of tail gas treatment, and specifically to a tail gas absorption device for bleaching powder production. Background Technique

[0002] Bleaching powder is an inorganic compound, mainly composed of calcium hypochlorite, usually also containing calcium chloride and calcium hydroxide, and is widely used in fields such as disinfection, bleaching, and water treatment. During the production process, chlorine-containing tail gas is generated, and the main components include chlorine, hydrogen chloride, and a small amount of chlorine oxides. If these tail gases are directly discharged, they will cause harm to the environment and human health, so they need to be treated.

[0003] When treating the tail gas of bleaching powder, the tail gas is usually treated by absorption with an alkali solution. The tail gas is injected into a sodium hydroxide or calcium hydroxide solution to absorb chlorine and hydrogen in the tail gas. In order to improve the mixing efficiency of the tail gas and the solution, the existing tail gas absorption device is provided with a plurality of inclined partitions inside the device, so that the tail gas floats upward along the bottom of the partition. However, the upward floating speed of the tail gas is relatively fast, so the device shell needs to have a certain height to improve the mixing efficiency between the tail gas and the solution. The discharge time of the later waste liquid will increase, making it difficult to ensure the continuous treatment of the tail gas. Summary of the Invention

[0004] The purpose of the present invention is to provide a tail gas absorption device for bleaching powder production to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A tail gas absorption device for bleaching powder production, comprising: a device shell and two annular disks symmetrically installed inside the device shell. A plurality of centrally symmetrically distributed treatment tanks are fixedly installed between the two annular disks. The top of the treatment tank is provided with a top cover. The bottom of the device shell is fixedly installed with an intake pipe. The bottom of the treatment tank is fixedly installed with an aeration disk. The top of the annular disk is fixedly installed with a first exhaust pipe; further comprising: an intake mechanism for continuously treating the tail gas conveyed by the first exhaust pipe, the intake mechanism being installed inside the device shell; a mixing mechanism for improving the mixing efficiency of the solution and the tail gas in the treatment tank, the mixing mechanism being installed inside the top cover; a liquid replacement mechanism for replacing the solution in the treatment tank, the liquid replacement mechanism being installed inside the top cover.

[0006] Preferably, the intake mechanism includes a first internal gear ring fixedly installed inside the annular disc. A drive rod is rotatably installed inside the device housing. Two symmetrically distributed turntables are fixedly installed on the outer side of the drive rod. A half rack engaged with the first internal gear ring is fixedly installed on the outer side of the turntable. Positioning rings are fixedly installed on one side of the two corresponding first internal gear rings. A plurality of arc-shaped clamping bars symmetrically distributed around the center are fixedly installed on the outer side of the positioning ring. The number of arc-shaped clamping bars is the same as the number of treatment tanks. A positioning disc slidably installed outside the arc-shaped clamping bar is fixedly installed on the outer side of the turntable. The positioning disc is a three-quarter disc structure. A drive motor is fixedly installed on the top of the device housing. The output end of the drive motor is fixedly connected to the top end of the drive rod. A second exhaust pipe is fixedly installed on the top of the top cover. A first sealing disc is fixedly installed between the plurality of second exhaust pipes. The top of the first sealing disc is in contact with the inner wall of the top of the device housing.

[0007] Preferably, the mixing mechanism includes a rotating ring fixedly installed at the bottom of the top cover. The cross-section of the rotating ring is in a T-shaped structure. An annular groove for the rotating ring to be limited and slide is formed inside the treatment tank. An external gear ring is fixedly installed on the outer side of the top cover. A second internal gear ring engaged with the external gear ring is fixedly installed inside the device housing. An installation ring is fixedly installed at the bottom of the top cover. A plurality of stirring rods symmetrically distributed around the center are fixedly installed at the bottom of the installation ring. Spiral stirring blades are fixedly installed on the outer side of the stirring rods.

[0008] Preferably, the liquid changing mechanism includes a floating block arranged inside the treatment tank. A spring is fixedly installed between the top of the floating block and the bottom of the top cover. A top rod is fixedly installed on the top of the floating block. The top rod extends into the second exhaust pipe. A liquid injection pipe is fixedly installed on the top of the device housing. A movable plate is slidably installed inside the liquid injection pipe. A push ball is arranged at the bottom of the movable plate. The outer diameter of the push ball is smaller than the inner diameters of the second exhaust pipe and the liquid injection pipe. A guide rod is fixedly installed between the top of the push ball and the movable plate. A convex ring is fixedly installed inside the liquid injection pipe. A tension spring is fixedly installed between the convex ring and the bottom of the movable plate. A fixed plate is fixedly installed inside the liquid injection pipe. The guide rod slidably penetrates through the fixed plate, and the guide rod is in a T-shaped structure. A plurality of drain holes symmetrically distributed around the center are formed on the outer sides of the fixed plate and the movable plate, and the drain holes on the fixed plate and the drain holes on the movable plate are staggered. A first drain pipe is fixedly installed at the bottom of the treatment tank. A second sealing disc is fixedly installed between the plurality of first drain pipes. The bottom of the second sealing disc is in contact with the inner wall of the bottom of the device housing. A second drain pipe is fixedly installed at the bottom of the device housing. The second drain pipe is located below the first exhaust pipe.

[0009] Preferably, the annular disc is fixedly connected to the outside of the treatment tank through a support cylinder.

[0010] Preferably, a positioning cylinder is fixedly installed between the two annular discs.

[0011] Preferably, two symmetrically distributed annular sliding rails are fixedly installed inside the device housing, and the two annular discs are respectively slidably installed inside the two annular sliding rails.

[0012] Preferably, a positioning frame is fixedly installed inside the second exhaust pipe, and the ejector rod is slidably installed inside the positioning frame.

[0013] Preferably, a limiting block is fixedly installed on the outside of the ejector rod, and the limiting block is located below the positioning frame.

[0014] Preferably, the outer sides of the fixed plate and the movable plate are both made of rubber.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the air inlet mechanism of the present invention, the two annular discs can drive multiple treatment tanks to rotate intermittently, realizing the position replacement of the treatment tanks. Then, the tail gas can be sequentially injected into the treatment tanks through the air inlet pipe, facilitating the full mixing of the tail gas with the solution in the treatment tanks, and the treated tail gas can be sequentially discharged from the first exhaust pipe, thereby achieving the effect of continuous treatment of the tail gas.

[0016] Through the mixing mechanism of the present invention, during the movement of the treatment tank, the external toothed ring on the top cover can move along the second internal toothed ring, realizing the rotation of the top cover. Then, the top cover can drive the stirring rod to stir and mix the solution, improving the mixing speed of the tail gas and the solution, and thus improving the treatment efficiency of chlorine gas in the tail gas.

[0017] Through the liquid replacement mechanism of the present invention, when the second exhaust pipe on the treatment tank is aligned with the bottom of the liquid injection pipe, the push ball can enter the inside of the second exhaust pipe, and the movable plate can open the liquid discharge hole on the fixed plate, so that the solution can be injected into the treatment tank. And when the first liquid discharge pipe on the treatment tank is aligned with the second liquid discharge pipe at the bottom of the device housing, the solution in the treatment tank can be discharged, thereby achieving the effect of automatic liquid injection and liquid discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the annular disc and the annular sliding rail in the present invention; Figure 3 is a schematic diagram of the structure of the treatment tank and the aeration disc in the present invention; Figure 4Schematic diagram of the stirring rod and the rotating ring structure in the present invention; Figure 5 Schematic diagram of the first sealing disc and the external toothed ring structure in the present invention; Figure 6 Schematic diagram of the arc-shaped strip and the turntable structure in the present invention; Figure 7 Schematic diagram of the ejector rod and the push ball structure in the present invention; Figure 8 Schematic diagram of the movable plate and the fixed plate structure in the present invention.

[0019] In the figure: 1, device housing; 2, annular disc; 3, treatment tank; 4, top cover; 5, intake pipe; 6, aeration disc; 7, first exhaust pipe; 8, first internal toothed ring; 9, drive rod; 10, turntable; 11, semi-rack; 12, positioning ring; 13, arc-shaped clamping strip; 14, positioning disc; 15, drive motor; 16, second exhaust pipe; 17, first sealing disc; 18, second sealing disc; 19, rotating ring; 20, external toothed ring; 21, second internal toothed ring; 22, mounting ring; 23, stirring rod; 24, spiral stirring blade; 25, floating block; 26, spring; 27, ejector rod; 28, liquid injection pipe; 29, movable plate; 30, push ball; 31, guide rod; 32, convex ring; 33, tension spring; 34, fixed plate; 35, first drain pipe; 36, second drain pipe; 37, support cylinder; 38, positioning cylinder; 39, annular slide rail; 40, positioning frame; 41, limit block. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1: Please refer to Figures 1-8, A tail gas absorption device for bleaching powder production in the figure, including a device housing 1 and two annular discs 2 symmetrically installed inside the device housing 1. A positioning cylinder 38 is fixedly installed between the two annular discs 2 to facilitate the synchronous rotation of the two annular discs 2. A plurality of treatment tanks 3 symmetrically distributed around the center are fixedly installed between the two annular discs 2. The solution in the treatment tank 3 is used to treat the tail gas. The annular disc 2 is fixedly connected to the outside of the treatment tank 3 through a support cylinder 37 to improve the firmness of the installation of the treatment tank 3 and the annular disc 2. Two symmetrically distributed annular slide rails 39 are fixedly installed inside the device housing 1, and the two annular discs 2 are respectively slidably installed inside the two annular slide rails 39 to improve the smoothness of the rotation of the annular disc 2. A top cover 4 is installed on the top of the treatment tank 3, and an intake pipe 5 is fixedly installed at the bottom of the device housing 1 for injecting the tail gas to be treated into the treatment tank 3. An aeration disc 6 is fixedly installed at the bottom of the treatment tank 3, and a first exhaust pipe 7 is fixedly installed on the top of the annular disc 2 for discharging the treated tail gas; further comprising: an intake mechanism for continuously treating the tail gas conveyed by the first exhaust pipe 7, and the intake mechanism is installed inside the device housing 1.

[0022] The intake mechanism includes a first internal gear ring 8 fixedly installed inside the annular disc 2. A driving rod 9 is rotatably installed inside the device housing 1. Two symmetrically distributed turntables 10 are fixedly installed on the outside of the driving rod 9. The driving rod 9 can drive the two turntables 10 to rotate synchronously. A semi-rack 11 that cooperates with the first internal gear ring 8 is fixedly installed on the outside of the turntable 10, so that the semi-rack 11 can drive the first internal gear ring 8 to rotate slightly. Positioning rings 12 are fixedly installed on one side of the two corresponding first internal gear rings 8. A plurality of arc-shaped clamping bars 13 symmetrically distributed around the center are fixedly installed on the outside of the positioning ring 12. The number of arc-shaped clamping bars 13 is the same as the number of treatment tanks 3. A positioning disc 14 slidably installed on the outside of the arc-shaped clamping bar 13 is fixedly installed on the outside of the turntable 10, so that the positioning disc 14 can provide positioning for the turntable 10 through the arc-shaped clamping bar 13. The positioning disc 14 is a three-quarter disc structure. When the semi-rack 11 drives the first internal gear ring 8 to rotate, the outside of the positioning disc 14 can move away from the arc-shaped clamping bar 13 to unlock the positioning ring 12, thereby realizing the position replacement of multiple treatment tanks 3. A driving motor 15 is fixedly installed on the top of the device housing 1, and the output end of the driving motor 15 is fixedly connected to the top end of the driving rod 9. The driving motor 15 can drive the driving rod 9 to rotate continuously. A second exhaust pipe 16 is fixedly installed on the top of the top cover 4. A first sealing disc 17 is fixedly installed between the plurality of second exhaust pipes 16. The top of the first sealing disc 17 is in contact with the inner wall of the top of the device housing 1, so that when the second exhaust pipe 16 is aligned with the first exhaust pipe 7 on the device housing 1, the tail gas treated in the treatment tank 3 can be discharged through the second exhaust pipe 16 and the first exhaust pipe 7.

[0023] Example 2: Please refer to Figure 4 and Figure 5, this embodiment further elaborates on the first embodiment. The mixing mechanism shown in the figure includes a rotating ring 19 fixedly installed at the bottom of the top cover 4. The cross-section of the rotating ring 19 is in a T-shaped structure. An annular groove for the limiting sliding of the rotating ring 19 is provided inside the treatment tank 3, so that the top cover 4 can rotate on the top of the treatment tank 3 through the rotating ring 19. An external gear ring 20 is fixedly installed on the outer side of the top cover 4, and a second internal gear ring 21 that cooperates with the external gear ring 20 is fixedly installed inside the device housing 1. When the treatment tank 3 moves, it can drive the external gear ring 20 on the top cover 4 to move along the inner side of the second internal gear ring 21, realizing the rotation of the top cover 4. An installation ring 22 is fixedly installed at the bottom of the top cover 4, and a plurality of stirring rods 23 distributed in central symmetry are fixedly installed at the bottom of the installation ring 22, so that the top cover 4 can drive the stirring rods 23 to rotate through the installation ring 22. A spiral stirring blade 24 is fixedly installed on the outer side of the stirring rod 23, so that the stirring rod 23 stirs the solution in the treatment tank 3 through the spiral stirring blade 24, improving the mixing efficiency of the solution and the tail gas.

[0024] Embodiment Three: Please refer to Figures 5-8, this embodiment further illustrates other embodiments. The liquid changing mechanism in the figure includes a floating block 25 arranged inside the treatment tank 3, enabling the floating block 25 to float on the liquid surface of the solution. A spring 26 is fixedly installed between the top of the floating block 25 and the bottom of the top cover 4. When the solution in the treatment tank 3 is discharged, the resilience of the spring 26 can be utilized to move the floating block 25 downward. A push rod 27 is fixedly installed at the top of the floating block 25, and the push rod 27 extends to the inside of the second exhaust pipe 16. A liquid injection pipe 28 is fixedly installed at the top of the device housing 1 for conveying the solution. A movable plate 29 is slidably installed inside the liquid injection pipe 28. A push ball 30 is arranged at the bottom of the movable plate 29. The outer diameter of the push ball 30 is smaller than the inner diameters of the second exhaust pipe 16 and the liquid injection pipe 28, facilitating the exhaust of tail gas and the injection of the solution into the second exhaust pipe 16. A guide rod 31 is fixedly installed between the top of the push ball 30 and the movable plate 29. A convex ring 32 is fixedly installed inside the liquid injection pipe 28. A tension spring 33 is fixedly installed between the convex ring 32 and the bottom of the movable plate 29. When the push ball 30 is aligned with the second exhaust pipe 16, the resilience of the tension spring 33 is utilized to make the push ball 30 extend into the inside of the second exhaust pipe 16. When the push rod 27 moves upward, the push ball 30 can be pushed upward to reset. A fixed plate 34 is fixedly installed inside the liquid injection pipe 28. The guide rod 31 slidably penetrates through the fixed plate 34, and the guide rod 31 is in a T-shaped structure to provide a limit for the movement of the push ball 30. A positioning frame 40 is fixedly installed inside the second exhaust pipe 16. The push rod 27 is slidably installed inside the positioning frame 40 to provide a guide for the movement of the push rod 27. A limit block 41 is fixedly installed on the outer side of the push rod 27, and the limit block 41 is located below the positioning frame 40 to provide a limit for the movement of the push rod 27. A plurality of drain holes are provided on the outer sides of the fixed plate 34 and the movable plate 29, which are symmetrically distributed about the center. The drain holes on the fixed plate 34 and the drain holes on the movable plate 29 are staggered. When the fixed plate 34 and the movable plate 29 are in contact, the drain holes on the fixed plate 34 and the movable plate 29 can be in a mutually sealed state, thus realizing the sealing of the liquid injection pipe 28. The outer sides of the fixed plate 34 and the movable plate 29 are made of rubber. A first drain pipe 35 is fixedly installed at the bottom of the treatment tank 3. A second sealing disc 18 is fixedly installed between the plurality of first drain pipes 35. The bottom of the second sealing disc 18 is in contact with the bottom inner wall of the device housing 1. A second drain pipe 36 is fixedly installed at the bottom of the device housing 1, enabling the second sealing disc 18 to provide sealing for the second drain pipe 36 when rotating. The second drain pipe 36 is located below the first exhaust pipe 7. When the first drain pipe 35 and the second drain pipe 36 are aligned, the solution in the treatment tank 3 can be discharged from the first drain pipe 35 and the second drain pipe 36.

[0025] Working principle: First, the staff connects the pipeline for conveying exhaust gas to the intake pipe 5 so that the exhaust gas to be treated can enter the intake pipe 5. The exhaust gas enters the corresponding treatment tank 3 from the aeration disk 6 directly above the intake pipe 5, making the exhaust gas enter the solution in the treatment tank 3 in the form of fine bubbles. Then, the staff starts the drive motor 15, causing the drive motor 15 to drive the drive rod 9 to rotate. The drive rod 9 drives the two turntables 10 to rotate synchronously, making the turntables 10 drive the positioning disk 14 and the half rack 11 to rotate synchronously. The positioning disk 14 rotates along the outside of the arc-shaped clamping strip 13, and the half rack 11 contacts the first internal gear ring 8, causing the half rack 11 to drive the first internal gear ring 8 to rotate slightly. The first internal gear ring 8 drives the positioning ring 12 and the annular disk 2 to rotate synchronously. At the same time, the positioning disk 14 moves away from the arc-shaped clamping strip 13 and contacts another arc-shaped clamping strip 13, providing a limit for the arc-shaped clamping strip 13 by the positioning disk 14. The two annular disks 2 can drive multiple treatment tanks 3 to move, replacing the positions between the multiple treatment tanks 3. At this time, the intake pipe 5 is aligned with the aeration disk 6 in the next treatment tank 3, and the intake pipe 5 can inject the exhaust gas to be treated into this treatment tank 3. At the same time, the treatment tank 3 drives the external gear ring 20 on the top cover 4 to move along the inside of the second internal gear ring 21, causing the external gear ring 20 to drive the top cover 4 to rotate. The top cover 4 can drive the spiral stirring blades 24 on the stirring rod 23 through the mounting ring 22 to stir the solution, improving the mixing efficiency of the solution and the exhaust gas. Thus, with the rotation of the drive rod 9, the sequential replacement of the treatment tanks 3 can be realized, increasing the mixing time of the exhaust gas and the solution. When the second exhaust pipe 16 on the treatment tank 3 is aligned with the first exhaust pipe 7 on the device housing 1, the exhaust gas in the treatment tank 3 can be discharged from the first exhaust pipe 7 and the second exhaust pipe 16. And the first drain pipe 35 at the bottom of this treatment tank 3 is aligned with the second drain pipe 36 of the device housing 1, and the solution in the treatment tank 3 can be discharged from the first drain pipe 35 and the second drain pipe 36, realizing the automatic discharge of the solution. Moreover, the floating block 25 in this treatment tank 3 can move downward under the rebound of the spring 26, causing the floating block 25 to drive the ejector rod 27 to move synchronously. Then, the empty treatment tank 3 moves to directly below the liquid injection pipe 28, aligning the second exhaust pipe 16 of the treatment tank 3 with the liquid injection pipe 28. And the push ball 30 in the liquid injection pipe 28 moves to the inside of the second exhaust pipe 16 under the rebound of the tension spring 33, and the movable plate 29 can move away from the fixed plate 34. The pipeline for conveying the solution can inject the solution into the drain hole of the fixed plate 34 through the liquid injection pipe 28, and then enter the second exhaust pipe 16 from the drain hole on the movable plate 29, and the solution can enter the treatment tank 3. Finally, as the solution increases, the liquid level of the solution can push the floating block 25 upward, causing the floating block 25 to drive the ejector rod 27 upward, and the ejector rod 27 can push the push ball 30 upward, making the movable plate 29 contact the fixed plate 34, and the movable plate 29 can seal the drain hole on the fixed plate 34 and seal the liquid injection pipe 28. Thus, the effect of automatic drainage and liquid injection of the treatment tank 3 is realized.Thus, the effect of continuously treating the tail gas is achieved, and the treatment efficiency of the tail gas is improved.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bleaching powder production tail gas absorption device, characterized in that: include: A device housing (1) and two annular disks (2) mounted on the inner side of the device housing (1); a plurality of treatment tanks (3) are fixedly mounted between the two annular disks (2); a top cover (4) is mounted on the top of the treatment tank (3); an air inlet pipe (5) is mounted on the bottom of the device housing (1); an aeration disk (6) is mounted on the bottom of the treatment tank (3); and a first exhaust pipe (7) is mounted on the top of the annular disk (2); Also includes: An air intake mechanism, used for continuously processing the exhaust gas transported by the first exhaust pipe (7), the air intake mechanism being installed on the inner side of the device housing (1); A mixing mechanism, used to improve the mixing efficiency of the solution and the tail gas in the treatment tank (3), the mixing mechanism being installed on the inner side of the top cover (4); A liquid replacement mechanism is used to replace the solution in the processing tank (3), and the liquid replacement mechanism is installed on the inner side of the top cover (4).

2. The bleaching powder production tail gas absorption device according to claim 1, characterized in that: The air intake mechanism comprises a first inner gear ring (8) mounted on the inner side of the annular disk (2); a driving rod (9) is rotatably mounted on the inner side of the device housing (1); two rotating disks (10) are fixedly mounted on the outer side of the driving rod (9); a half rack (11) is mounted on the outer side of the rotating disk (10); a positioning ring (12) is mounted on the corresponding side of the two first inner gear rings (8); a plurality of arc-shaped clips (13) are fixedly mounted on the outer side of the positioning ring (12); the number of the arc-shaped clips (13) is the same as the number of the processing The number of tanks (3) is the same; a positioning plate (14) is fixedly mounted on the outer side of the rotating disk (10) and is slidably mounted on the outer side of the arc-shaped clamping strip (13); the positioning plate (14) is a three-quarter disc structure; a driving motor (15) is mounted on the top of the device housing (1); the output end of the driving motor (15) is fixedly connected to the top end of the driving rod (9); a second exhaust pipe (16) is mounted on the top of the top cover (4); and a first sealing plate (17) is fixedly mounted between the plurality of the second exhaust pipes (16).

3. The bleaching powder production tail gas absorption device according to claim 2, characterized in that: The mixing mechanism comprises a rotating ring (19) fixedly mounted on the bottom of the top cover (4), the cross section of the rotating ring (19) being of a T-shaped structure, an annular groove for limiting the sliding of the rotating ring (19) is provided on the inner side of the processing tank (3), an outer toothed ring (20) is fixedly mounted on the outer side of the top cover (4), a second inner toothed ring (21) matching the outer toothed ring (20) is mounted on the inner side of the device housing (1), a mounting ring (22) is mounted on the bottom of the top cover (4), a plurality of stirring rods (23) are fixedly mounted on the bottom of the mounting ring (22), and spiral stirring blades (24) are fixedly mounted on the outer sides of the stirring rods (23).

4. The bleaching powder production tail gas absorption device according to claim 3, characterized in that: The liquid replacement mechanism comprises a floating block (25) arranged inside the processing tank (3), a spring (26) being installed between the top of the floating block (25) and the bottom of the top cover (4), a top rod (27) being fixedly installed on the top of the floating block (25), a liquid injection pipe (28) being fixedly installed on the top of the device housing (1), a movable plate (29) being slidably installed inside the liquid injection pipe (28), a push ball (30) being arranged at the bottom of the movable plate (29), a guide rod (31) being fixedly installed between the top of the push ball (30) and the movable plate (29), and a guide rod (31) being fixedly installed inside the liquid injection pipe (28). A convex ring (32) is provided, a tension spring (33) is installed between the convex ring (32) and the bottom of the movable plate (29), a fixed plate (34) is installed on the inner side of the injection tube (28), a plurality of drainage holes are provided on the outer sides of the fixed plate (34) and the movable plate (29), and the drainage holes on the fixed plate (34) and the drainage holes on the movable plate (29) are staggered, a first drainage pipe (35) is installed at the bottom of the treatment tank (3), a second sealing disk (18) is fixedly installed between the plurality of the first drainage pipes (35), and a second drainage pipe (36) is installed at the bottom of the device housing (1).

5. The bleaching powder production tail gas absorption device according to claim 1, characterized in that: The annular disk (2) is fixedly connected to the outer side of the processing tank (3) via a supporting tube (37).

6. The bleaching powder production tail gas absorption device according to claim 2, characterized in that: A positioning cylinder (38) is installed between the two annular disks (2).

7. The bleaching powder production tail gas absorption device according to claim 2, characterized in that: Two annular slide rails (39) are fixedly mounted on the inner side of the device housing (1), and the two annular disks (2) are slidably mounted on the inner sides of the two annular slide rails (39), respectively.

8. The bleaching powder production tail gas absorption device according to claim 4, characterized in that: A positioning frame (40) is installed on the inner side of the second exhaust pipe (16), and the push rod (27) is slidably installed on the inner side of the positioning frame (40).

9. The tail gas absorption device for bleaching powder production according to claim 8, characterized in that: A limit block (41) is fixedly mounted on the outer side of the push rod (27), and the limit block (41) is located below the positioning frame (40).

10. The bleaching powder production tail gas absorption device according to claim 4, characterized in that: The outer sides of the fixed plate (34) and the movable plate (29) are both made of rubber material.

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