Hydrochloric acid mist treatment device

Abstract

The hydrochloric acid mist treatment device comprises a shell, an absorption part, an air inlet pipe and a spraying assembly, the interior of the shell is hollow, the absorption part is arranged in the shell, the air inlet pipe is connected to the shell, one end of the air inlet pipe is arranged opposite to the absorption part, the other end of the air inlet pipe is arranged outside the shell, and the spraying assembly comprises a support, a plurality of spraying heads and a liquid inlet pipe. The support is connected to the inner wall of the shell, the multiple spraying heads are distributed in a central point symmetry mode along the axis of the air inlet pipe and connected to the support, and the liquid inlet pipe is communicated with the interiors of the multiple spraying heads and used for providing circulating water for the multiple spraying heads. The utility model can effectively solve the problem of poor acid mist absorption effect caused by limited spraying area due to single position arrangement of the spraying joint in the absorption container in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of acid mist treatment, in particular to a hydrochloric acid mist treatment device. Background Art

[0002] To avoid equipment damage caused by hydrochloric acid mist, a device for absorbing hydrochloric acid mist has emerged.

[0003] For example, the Chinese utility model patent with the application number: CN202120250321.2, titled: A device for treating and absorbing hydrochloric acid mist, includes an absorption container and a mist receiving pipe extending into the absorption container. The absorption container contains multi-faceted hollow sphere fillers and hydrochloric acid mist absorption liquid. The liquid level of the hydrochloric acid mist absorption liquid is lower than the highest point of the multi-faceted hollow sphere fillers and lower than the outlet end of the mist receiving pipe; an absorption liquid inlet and an absorption liquid outlet are provided on the side wall of the absorption container. The absorption liquid inlet is higher than the highest point of the multi-faceted hollow sphere fillers, and the absorption liquid outlet is lower than the liquid level of the hydrochloric acid mist absorption liquid. An outlet pipe, an absorption liquid circulation pump, and an inlet pipe are sequentially connected outside the absorption container, and a spraying joint is connected to the end of the inlet pipe; an exhaust pipe is also connected to the top of the absorption container, and a secondary absorption barrel is provided below the end of the exhaust pipe; an overflow pipe is provided on the side of the absorption container. This device can absorb and treat the acid mist generated by the hydrochloric acid storage tank, avoid the erosion of equipment and pipelines by hydrochloric acid mist, and meet the requirements of clean production. However, the spraying joint is only provided on one side wall of the absorption container, resulting in poor acid mist absorption effect.

[0004] Therefore, there is an urgent need for a hydrochloric acid mist treatment device to solve the problem that the spraying area is limited due to the single position setting of the spraying joint in the absorption container in the prior art, resulting in poor acid mist absorption effect. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies, and propose a hydrochloric acid mist treatment device to solve the technical problem that the spraying area is limited due to the single position setting of the spraying joint in the absorption container in the prior art, resulting in poor acid mist absorption effect.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] In the first aspect, the utility model provides a hydrochloric acid mist treatment device, including:

[0008] A housing, which is hollow inside;

[0009] An absorption member, which is disposed inside the housing;

[0010] An inlet pipe, which is connected to the housing, and one end of the inlet pipe is disposed opposite to the absorption member and the other end is outside the housing; and

[0011] The spraying assembly includes a bracket, a plurality of spray heads and a liquid inlet pipe. The bracket is connected to the inner wall of the housing. The plurality of spray heads are symmetrically distributed about the center point along the axis of the intake pipe and are all connected to the bracket. The liquid inlet pipe is connected to the interiors of the plurality of spray heads and is used to supply circulating water to the plurality of spray heads.

[0012] In some embodiments, the bracket is annular, the bracket is sleeved on the intake pipe and is slidably connected to the inner wall of the housing. The spraying assembly further includes a driving member, and the driving member is connected to both the bracket and the housing and is used to drive the bracket and the plurality of spray heads to slide close to or away from the absorption member.

[0013] In some embodiments, at least two sliding grooves are formed in the inner wall of the housing. The driving member includes at least two sliding blocks and a linear driving portion. The sliding blocks are arranged in one-to-one correspondence with the sliding grooves. One end of the sliding block is connected to the bracket, and the other end is slidably embedded in the sliding groove. The linear driving portion has a fixed end and an extending end. The fixed end of the driving member is connected to the housing, and the extending end is connected to the bracket. The extension or shortening of the extending end of the linear driving portion relative to the fixed end can drive the bracket to slide relative to the housing.

[0014] In some embodiments, at least one spherical groove is formed in the sliding block opposite to the bottom inner wall of the sliding groove. The driving member further includes at least one rolling portion. The rolling portions are arranged in one-to-one correspondence with the spherical grooves. The rolling portions are rotatably disposed inside the spherical grooves and are abutted against the bottom inner wall of the sliding groove.

[0015] In some embodiments, the driving member further includes a protective cover and a connecting rod. The protective cover covers the linear driving portion and is connected to the inner wall of the housing. The protective cover is provided with a through hole. One end of the connecting rod is connected to the extending end of the linear driving portion, and the other end slidably passes through the through hole and is connected to the bracket.

[0016] In some embodiments, the driving member further includes an elastic sealing ring. The elastic sealing ring is connected to the through hole and is sleeved on the connecting rod in a sealing manner.

[0017] In some embodiments, the sliding blocks, the rolling portions, the connecting rods and the elastic sealing rings are all made of corrosion-resistant materials, such as reinforced polypropylene or polytetrafluoroethylene.

[0018] In some embodiments, the liquid inlet pipe is annular, and a plurality of the spray heads are uniformly distributed along the guide of the liquid inlet pipe and are all connected to the liquid inlet pipe in communication. The hydrochloric acid mist treatment device further includes a circulating water assembly, and the circulating water assembly further includes a first circulating water pipe, a second circulating water pipe, a connecting hose and a circulating pump. One end of the first circulating water pipe is in communication with the housing, one end of the second circulating water pipe is in communication with the housing, the connecting hose is disposed inside the housing, and both ends of the connecting hose are respectively in communication with one end of the second circulating water pipe and the liquid inlet pipe. The liquid inlet end of the circulating pump is in communication with the other end of the first circulating water pipe, and the liquid outlet end is in communication with the other end of the second circulating water pipe.

[0019] In some embodiments, the hydrochloric acid mist treatment device further includes a secondary treatment barrel, a gas guide pipe and a gas distribution pipe. The secondary treatment barrel is spaced from the housing and is filled with an absorption liquid inside. Both ends of the gas guide pipe are respectively in communication with the housing and the inside of the secondary treatment barrel. The gas distribution pipe is disposed above the liquid level in the secondary treatment barrel and is annular, and a plurality of air outlet holes are formed in the gas distribution pipe.

[0020] In some embodiments, the hydrochloric acid mist treatment device further includes a gas concentration detection unit. The gas concentration detection unit is disposed above the absorption member and is connected to the inner wall of the housing.

[0021] Compared with the prior art, the beneficial effects of the hydrochloric acid mist treatment device provided by the present utility model include: an absorption member is disposed inside the housing, and the acid mist gas enters the inner wall of the housing through the air inlet pipe and is partially absorbed by the absorption member. A plurality of spray heads are all connected to the bracket, and the plurality of spray heads are symmetrically distributed about the center point along the axis of the air inlet pipe. The circulating water is provided through the liquid inlet pipe, and the plurality of spray heads can simultaneously spray and neutralize the acid mist inside the housing. Compared with the prior art, by providing the absorption member to perform preliminary absorption treatment on the acid mist, and then using the spraying action of the spray heads to perform secondary absorption treatment on the acid mist, the absorption effect of the acid mist can be improved. At the same time, the plurality of spray heads are symmetrically distributed about the center point along the axis of the air inlet pipe, so that the cross-sectional area region of the housing can be uniformly sprayed, and the acid mist gas inside the housing can be efficiently absorbed or neutralized, improving the absorption effect of the acid mist, and solving the technical problem in the prior art that the spraying area is limited due to the single position setting of the spray joints in the absorption container, resulting in poor acid mist absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural diagram of a hydrochloric acid mist treatment device provided by an embodiment of the present utility model;

[0023] Figure 2 is a three-dimensional structural diagram of another perspective of a hydrochloric acid mist treatment device provided by an embodiment of the present utility model;

[0024] Figure 3 It is a three - dimensional structure schematic diagram of another perspective of a hydrochloric acid mist treatment device provided by an embodiment of the present utility model;

[0025] Figure 4 It is a sectional structure schematic diagram of the connection of a housing, an absorption member, an air inlet pipe, a spray assembly and a circulating water assembly provided by an embodiment of the present utility model;

[0026] Figure 5 It is a sectional structure schematic diagram of the connection of a housing, a protective cover, a linear driving part, an elastic sealing ring and a connecting rod provided by an embodiment of the present utility model;

[0027] Figure 6 It is a sectional structure schematic diagram of the connection of a housing, a sliding block, a rolling part and a bracket provided by an embodiment of the present utility model.

[0028] Explanation of reference numerals:

[0029] Housing 1;

[0030] Absorption member 2;

[0031] Air inlet pipe 3;

[0032] Spray assembly 4;

[0033] Bracket 41;

[0034] Spray head 42;

[0035] Liquid inlet pipe 43;

[0036] Driving member 44;

[0037] Sliding block 441;

[0038] Linear driving part 442;

[0039] Rolling part 443;

[0040] Protective cover 444;

[0041] Connecting rod 445;

[0042] Elastic sealing ring 446;

[0043] Circulating water assembly 5;

[0044] First circulating water pipe 51;

[0045] Second circulating water pipe 52;

[0046] Connecting hose 53;

[0047] Circulation pump 54;

[0048] Secondary treatment barrel 6;

[0049] Air duct 7. Specific implementation manner

[0050] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0051] In order to solve the technical problem in the prior art that the spraying area is limited due to the single position setting of the spraying joint in the absorption container, resulting in poor acid mist absorption effect, the present utility model provides a hydrochloric acid mist treatment device, which can realize that the cross-sectional area region of the housing 1 can be evenly sprayed, and can efficiently absorb or neutralize the acid mist gas in the housing 1, improving the absorption effect of the acid mist.

[0052] It should be noted that the hydrochloric acid mist treatment device described in the present utility model is used in but not limited to the acid mist treatment technical field, etc. For the convenience of description, in the present utility model, only the case where the hydrochloric acid mist treatment device is applied to the acid mist treatment technical field is taken as an example for description, and the principle of the hydrochloric acid mist treatment device applied to other types of equipment is essentially the same as that applied to the acid mist treatment technical field, which will not be elaborated here one by one.

[0053] Please refer to Figures 1 to 4 , Figure 1 , Figure 2 and Figure 3 which are the structural schematic diagrams of the hydrochloric acid mist treatment device in an embodiment of the present utility model. The hydrochloric acid mist treatment device includes a housing 1, an absorption member 2, an air inlet pipe 3 and a spraying assembly 4. The inside of the housing 1 is hollow. The absorption member 2 is placed inside the housing 1. The air inlet pipe 3 is connected to the housing 1, and one end of the air inlet pipe 3 is arranged opposite to the absorption member 2 and the other end is outside the housing 1. The spraying assembly 4 includes a bracket 41, a plurality of spray heads 42 and a liquid inlet pipe 43. The bracket 41 is connected to the inner wall of the housing 1. The plurality of spray heads 42 are symmetrically distributed around the axis of the air inlet pipe 3 at the center point and are all connected to the bracket 41. The liquid inlet pipe 43 is connected to the inside of the plurality of spray heads 42 and is used to provide circulating water to the plurality of spray heads 42.

[0054] In this device, an absorption member 2 is arranged inside the housing 1. The acid mist gas enters the inner wall of the housing 1 through the air inlet pipe 3 and is partially absorbed by the absorption member 2. The plurality of spray heads 42 are all connected to the bracket 41. The plurality of spray heads 42 are symmetrically distributed around the axis of the air inlet pipe 3 at the center point. Through the liquid inlet pipe 43, circulating water is provided, and the plurality of spray heads 42 can spray and neutralize the acid mist in the housing 1 at the same time.

[0055] Compared with the prior art, by arranging the absorber 2 to conduct preliminary absorption treatment on acid mist and then using the spraying action of the spray heads 42 to conduct secondary absorption treatment on the acid mist, the absorption effect of the acid mist can be improved. At the same time, multiple spray heads 42 are symmetrically distributed around the axis of the intake pipe 3 at the center point, so that the cross-sectional area region of the housing 1 can be evenly sprayed, and the acid mist gas in the housing 1 can be efficiently absorbed or neutralized, improving the absorption effect of the acid mist, and solving the technical problem in the prior art that the spraying area is limited due to the single position setting of the spray joints in the absorption container, resulting in poor acid mist absorption effect.

[0056] Furthermore, in this device, the housing 1 is made of corrosion-resistant material, the intake pipe 3 is inserted into the absorber 2, and the absorber 2 is a common and easily purchasable hollow sphere packing in the market, which is used to absorb or neutralize acid mist. This is a conventional setting well-known to those skilled in the art. At the same time, the housing 1 is also filled with a neutralizing liquid for absorbing acid mist, which will not be elaborated here too much.

[0057] Furthermore, in this device, the absorber 2, the intake pipe 3, the bracket 41, the spray heads 42 and the liquid inlet pipe 43 are all made of corrosion-resistant materials. This is a conventional setting well-known to those skilled in the art and will not be elaborated here too much.

[0058] In this embodiment, as Figures 2 to 4 shown, the bracket 41 is annular, the bracket 41 is sleeved on the intake pipe 3 and is slidably connected to the inner wall of the housing 1. The spraying assembly 4 further includes a driving member 44, and the driving member 44 is connected to both the bracket 41 and the housing 1, and is used to drive the bracket 41 and multiple spray heads 42 to slide close to or away from the absorber 2.

[0059] The bracket 41 is slidably connected to the housing 1. Driven by the driving member 44, the bracket 41 can drive multiple spray heads 42 to slide relative to the absorber 2, and the slid spray heads 42 can move close to or away from the absorber 2.

[0060] In one of the embodiments, please refer to Figure 3 , at least two sliding grooves are formed on the inner wall of the housing 1. The driving member 44 includes at least two sliding blocks 441 and a linear driving part 442. The sliding blocks 441 are arranged in one-to-one correspondence with the sliding grooves. One end of the sliding block 441 is connected to the bracket 41, and the other end is slidably embedded in the sliding groove. The linear driving part 442 has a fixed end and an extending end. The fixed end of the driving member 44 is connected to the housing 1, and the extending end is connected to the bracket 41. The extension or shortening of the extending end of the linear driving part 442 relative to the fixed end can drive the bracket 41 to slide relative to the housing 1.

[0061] The cooperation between the sliding block 441 and the sliding groove plays a role in supporting and connecting between the bracket 41 and the inner wall of the housing 1.

[0062] Further, the linear drive unit 442 here is a push rod motor, cylinder, or hydraulic cylinder that is common and easy to purchase in the market. This is a conventional setting well-known to those skilled in the art and will not be elaborated further here.

[0063] As one implementation, as Figure 6 shown, the sliding block 441 is provided with at least one spherical groove on the inner wall of the bottom of the sliding groove. The driving member 44 further includes at least one rolling portion 443. The rolling portions 443 are arranged in one-to-one correspondence with the spherical grooves. The rolling portion 443 is rotatably disposed inside the spherical groove and abuts against the inner wall of the bottom of the sliding groove.

[0064] The rolling portion 443 is rotatably disposed inside the spherical groove and can abut against the inner wall of the bottom of the sliding groove, which is used to reduce the sliding friction between the sliding block 441 and the sliding groove.

[0065] As another implementation, as Figure 3 、 Figure 5 shown, the driving member 44 further includes a protective cover 444 and a connecting rod 445. The protective cover 444 covers the linear drive unit 442 and is connected to the inner wall of the housing 1. The protective cover 444 is provided with a through hole. One end of the connecting rod 445 is connected to the extending end of the linear drive unit 442, and the other end slides through the through hole and is connected to the bracket 41.

[0066] The bracket 41 is connected to the linear drive unit 442 through the connecting rod 445. At the same time, the linear drive unit 442 is covered and protected by the protective cover 444, which can prevent acid mist from damaging the linear drive unit 442.

[0067] As a preferred implementation, as Figure 5 shown, the driving member 44 further includes an elastic sealing ring 446. The elastic sealing ring 446 is connected to the through hole and is sleeved on the connecting rod 445 in a sealed manner.

[0068] The sealing effect can be improved through the elastic sealing ring 446, effectively protecting the linear drive unit 442.

[0069] As another preferred implementation, the sliding block 441, the rolling portion 443, the connecting rod 445, and the elastic sealing ring 446 are all made of corrosion-resistant materials, such as reinforced polypropylene or polytetrafluoroethylene.

[0070] By setting corrosion-resistant materials, the stability of the device operation can be effectively improved.

[0071] Further, the reinforced polypropylene or polytetrafluoroethylene is a conventional setting well-known to those skilled in the art and will not be elaborated further here.

[0072] In this embodiment, as Figure 2 、 Figure 3and Figure 4 As shown in Figure 4 , the liquid inlet pipe 43 is annular, and a plurality of spray heads 42 are evenly distributed along the guide of the liquid inlet pipe 43 and are all connected to the liquid inlet pipe. The hydrochloric acid mist treatment device further includes a circulating water assembly 5, and the circulating water assembly 5 further includes a first circulating water pipe 51, a second circulating water pipe 52, a connecting hose 53 and a circulating pump 54. One end of the first circulating water pipe 51 is connected to the housing 1, one end of the second circulating water pipe 52 is connected to the housing 1, the connecting hose 53 is disposed inside the housing 1, and both ends of the connecting hose 53 are respectively connected to one end of the second circulating water pipe 52 and the liquid inlet pipe 43. The liquid inlet end of the circulating pump 54 is connected to the other end of the first circulating water pipe 51, and the liquid outlet end is connected to the other end of the second circulating water pipe 52.

[0073] Through the first circulating water pipe 51, the second circulating water pipe 52, the connecting hose 53 and the circulating pump 54, the circulation of the absorption liquid in the housing 1 can be realized.

[0074] Furthermore, the connecting hose 53 has a reserved length for cooperating with the sliding of the bracket 41. Here, the connecting hose 53 belongs to the conventional settings well known to those skilled in the art and will not be elaborated further.

[0075] In this embodiment, as Figures 1 to 3 shown, the device further includes a secondary treatment barrel 6, a gas guide pipe 7 and a gas distribution pipe. The secondary treatment barrel 6 is spaced from the housing 1, and its interior is filled with an absorption liquid. Both ends of the gas guide pipe 7 are respectively connected to the inside of the housing 1 and the secondary treatment barrel 6. The gas distribution pipe is disposed above the liquid level in the secondary treatment barrel 6 and is annular, and the gas distribution pipe is provided with a plurality of air outlet holes.

[0076] By providing the secondary treatment barrel 6, the acid mist tail gas can be further absorbed and treated, and the treatment efficiency of the acid mist can be improved.

[0077] Specifically, in this device, the gas guide pipe 7 has an inclined section and a straight section. The inclined section is inclined upward, and the straight section is vertically downward. When the tail gas passes through the gas guide pipe 7, part of the gas condenses on the pipe wall and can form a reflux, which will not be elaborated further here.

[0078] In this embodiment, the device further includes a gas concentration detection unit, and the gas concentration detection unit is disposed above the absorption member 2 and is connected to the inner wall of the housing 1.

[0079] By providing the gas concentration detection unit, the concentration of the acid mist in the housing 1 can be detected, so as to control the drive of the linear drive part 442 to adjust the height of the spray head 42, and the coverage area and height of the spray head 42 can be adjusted in real time, so as to achieve the best treatment effect.

[0080] Furthermore, the gas concentration detection unit here is a common and easily purchasable gas concentration sensor on the market, which is a conventional setting well-known to those skilled in the art and will not be elaborated further here.

[0081] For a better understanding of the present utility model, the following is a detailed description of the technical solution of the present utility model in conjunction with Figures 1 to 6 the following:

[0082] In the specific working process of the present utility model, an absorbent 2 is arranged inside the housing 1. Acid mist gas enters the inner wall of the housing 1 through the inlet pipe 3 and is partially absorbed by the absorbent 2. A plurality of spray heads 42 are all connected to the bracket 41, and the plurality of spray heads 42 are symmetrically distributed around the center point along the axis of the inlet pipe 3. The circulating water is provided through the liquid inlet pipe 43, and the plurality of spray heads 42 can simultaneously spray and neutralize the acid mist inside the housing 1. Compared with the prior art, by arranging the absorbent 2 to conduct preliminary absorption treatment on the acid mist, and then using the spraying action of the spray heads 42 to conduct secondary absorption treatment on the acid mist, the absorption effect of the acid mist can be improved. At the same time, the plurality of spray heads 42 are symmetrically distributed around the center point along the axis of the inlet pipe 3, so that the cross-sectional area region of the housing 1 can be evenly sprayed, and the acid mist gas inside the housing 1 can be efficiently absorbed or neutralized, improving the absorption effect of the acid mist.

[0083] During use, first, the acid mist gas is introduced into the interior of the housing 1 through the inlet pipe 3. Under the action of the absorbent 2, it can be partially absorbed and treated to achieve a preliminary treatment effect. Then, the circulating pump 54 continuously injects the absorbent liquid inside the housing 1 into the connecting hose 53, the liquid inlet pipe 43 and the plurality of spray heads 42. The plurality of spray heads 42 simultaneously spray the acid mist inside the housing 1. Then, the acid mist tail gas enters the secondary treatment barrel 6 through the air guide pipe 7. As the air outlet holes on the air distribution pipe are respectively treated by the absorbent liquid inside the secondary treatment barrel 6, finally, when the gas concentration detection unit detects that the gas concentration inside the housing 1 is higher than the preset value, the extended end of the linear drive part 442 shortens, and the bracket 41 drives the plurality of spray heads 42 to slide away from the absorbent 2, thereby increasing the height position of the spray heads 42 and improving the spraying area and spraying effect.

[0084] Through the above structure, the present device can solve the technical problem in the prior art that the spraying area is limited due to the single position setting of the spray joints inside the absorption container, resulting in poor acid mist absorption effect.

[0085] The above specific implementation manners of the present utility model do not constitute a limitation to the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model should be included within the protection scope of the claims of the present utility model.

Claims

1. A hydrochloric acid mist treatment device, characterized in that: include: The shell is hollow inside; An absorber, built into the shell; An air intake pipe connected to the shell, with one end of the air intake pipe being arranged opposite to the absorber and the other end being arranged outside the shell; as well as The spray assembly includes a bracket, a plurality of spray heads and a liquid inlet pipe. The bracket is connected to the inner wall of the shell. The plurality of spray heads are symmetrically distributed along the axis of the air inlet pipe and are all connected to the bracket. The liquid inlet pipe is connected to the interior of the plurality of spray heads and is used to provide circulating water to the plurality of spray heads.

2. The hydrochloric acid mist treatment device according to claim 1, characterized in that: The bracket is annular, and is sleeved on the air inlet pipe and slidably connected to the inner wall of the shell. The spray assembly also includes a driving member, which is connected to the bracket and the shell and is used to drive the bracket and the multiple spray heads to slide close to or away from the absorbent.

3. The hydrochloric acid mist treatment device according to claim 2, characterized in that: The inner wall of the shell is provided with at least two slide grooves, and the driving member includes at least two sliding blocks and a linear driving part. The sliding blocks are arranged in a one-to-one correspondence with the slide grooves, one end of the sliding block is connected to the bracket, and the other end is slidably embedded in the slide groove. The linear driving part has a fixed end and an extended end. The fixed end of the driving member is connected to the shell, and the extended end is connected to the bracket. The extended end of the linear driving part is extended or shortened relative to the fixed end to drive the bracket to slide relative to the shell.

4. The hydrochloric acid mist treatment device according to claim 3, characterized in that: The sliding block is provided with at least one spherical groove relative to the bottom inner wall of the slide groove, and the driving member also includes at least one rolling part, which is arranged in a one-to-one correspondence with the spherical groove. The rolling part rotates inside the spherical groove and abuts against the bottom inner wall of the slide groove.

5. The hydrochloric acid mist treatment device according to claim 4, characterized in that: The driving member also includes a protective cover and a connecting rod. The protective cover is arranged on the linear driving part and connected to the inner wall of the shell. The protective cover is provided with a through hole. One end of the connecting rod is connected to the extended end of the linear driving part, and the other end slides through the through hole and is connected to the bracket.

6. The hydrochloric acid mist treatment device according to claim 5, characterized in that: The driving member further comprises an elastic sealing ring, which is connected to the through hole and sealingly sleeved on the connecting rod.

7. The hydrochloric acid mist treatment device according to claim 6, characterized in that: The sliding block, rolling part, connecting rod and elastic sealing ring are all made of corrosion-resistant materials, such as reinforced polypropylene or polytetrafluoroethylene.

8. The hydrochloric acid mist treatment device according to claim 7, characterized in that: The liquid inlet pipe is annular, and the plurality of spray heads are evenly distributed along the guide of the liquid inlet pipe and are all connected to the liquid inlet pipe. The hydrochloric acid mist treatment device also includes a circulating water component, and the circulating water component also includes a first circulating water pipe, a second circulating water pipe, a connecting hose and a circulating pump. One end of the first circulating water pipe is connected to the shell, and one end of the second circulating water pipe is connected to the shell. The connecting hose is built into the shell, and the two ends of the connecting hose are respectively connected to one end of the second circulating water pipe and the liquid inlet pipe. The liquid inlet end of the circulating pump is connected to the other end of the first circulating water pipe, and the liquid outlet end is connected to the other end of the second circulating water pipe.

9. The hydrochloric acid mist treatment device according to claim 8, characterized in that: It also includes a secondary treatment barrel, an air guide pipe and an air distribution pipe. The secondary treatment barrel is spaced apart from the shell and is filled with absorption liquid. The two ends of the air guide pipe are respectively connected to the shell and the interior of the secondary treatment barrel. The air distribution pipe is arranged above the liquid level in the secondary treatment barrel and is ring-shaped. The air distribution pipe is provided with multiple air outlet holes.

10. The hydrochloric acid mist treatment device according to claim 9, characterized in that: It also includes a gas concentration detection unit, which is arranged above the absorbent and connected to the inner wall of the shell.

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