Push-pull type acid mist purification equipment for pickling line

Abstract

The utility model relates to push-pull type pickling line acid mist purification equipment which comprises a pickling tank, a plurality of isolation hoods are sequentially arranged on the pickling tank, the isolation hoods are used for isolating dissipation of acid mist, adsorption mechanisms are arranged on the isolation hoods, and the adsorption mechanisms are used for adsorbing the acid mist in the isolation hoods. A filtering mechanism for purifying the acid mist is arranged on the adsorption mechanism and comprises a shell and a filter which is arranged in the shell and is used for filtering the acid mist; through cooperation of the isolation cover, the adsorption mechanism, the filter, the water tank and the spraying assembly, acid mist can be subjected to isolation, adsorption, filtration and acid pickling combined treatment, emission of the acid mist in the strip steel acid pickling process can be remarkably reduced, environmental protection is facilitated, harm of the acid mist to workers can be reduced, and the service life of the workers is prolonged. And the safety of a working place is improved.

Description

Technical Field

[0001] The present application relates to the technical field of push-pull pickling, and in particular to an acid mist purification device for a push-pull pickling line. Background Art

[0002] In the metal processing industry, push-pull pickling line is a common treatment process, which is mainly used to remove the oxide layer, rust layer or other contaminants on the surface of metal materials to improve the surface quality and performance of the materials.

[0003] However, during the pickling process of strip steel, acidic gas (commonly known as acid mist) is generated due to the volatilization and chemical reaction of the acid solution. This acid mist not only pollutes the environment, but also poses a serious threat to the health of workers if they are exposed to it for a long time.

[0004] In addition, the volatilization of acid mist also means the waste of acid liquid. In the metal processing process, acid liquid is an expensive chemical raw material, and its effective utilization rate is directly related to production costs and economic benefits. The volatilization of acid mist not only reduces the efficiency of acid liquid use and increases the production cost of enterprises, but also creates unnecessary burdens on the environment.

[0005] In view of the above problems, a push-pull type acid mist purification equipment for pickling line is now designed. Utility Model Content

[0006] The embodiment of the present application provides an acid mist purification device for a push-pull pickling line to solve the problem in the related art that during the use of the push-pull pickling tank, acid gas is generated due to the volatilization and chemical reaction of the acid solution, causing harm to the environment and workers.

[0007] In a first aspect, a push-pull type pickling line acid mist purification device is provided, comprising:

[0008] A pickling tank, wherein a plurality of isolation covers are sequentially arranged on the pickling tank, wherein the isolation covers are used to isolate the acid mist from escaping, wherein an adsorption mechanism is arranged on the isolation covers, wherein the adsorption mechanism is used to adsorb the acid mist inside the isolation covers, wherein a filtering mechanism for purifying the acid mist is arranged on the adsorption mechanism, and wherein a pickling mechanism is arranged on the filtering mechanism;

[0009] The filtering mechanism comprises a housing, and a filter inside the housing for filtering acid mist;

[0010] The pickling mechanism comprises a water tank, the interior of the water tank is filled with a solution for cleaning acid mist, and a spray component for spraying the cleaned gas is arranged inside the water tank.

[0011] In some embodiments, the isolation cover is conical, a containing chamber is arranged inside the isolation cover, and a plurality of air inlet holes are arranged at the bottom of the isolation chamber.

[0012] In some embodiments, the adsorption mechanism includes a main pipeline, several branch pipelines and a fan, and the several branch pipelines are arranged on the main pipeline in sequence. The other end of the branch pipeline is connected to the containing chamber of the corresponding isolation cover, the fan air inlet is connected to the main pipeline, and the fan air outlet is connected to the filter. A demister is arranged inside the branch pipeline.

[0013] In some embodiments, one end of the housing is connected to a transfer tube, and the other end of the transfer tube extends into the solution inside the water tank;

[0014] The filter comprises partitions arranged relatively inside the shell, a plurality of activated carbon filter cores are inserted between the two partitions, and the activated carbon filter cores extend to the outside of the partitions near one end of the transfer tube.

[0015] In some embodiments, the water tank is provided with an exhaust pipe, the exhaust pipe is provided with a filter, and the water tank is provided with a drain valve and a water inlet valve.

[0016] In some embodiments, the spray assembly includes a pump body, a main pipe and a plurality of spray pipes, the pump body is arranged on a water tank, the main pipe is arranged inside the water tank, the plurality of spray pipes are arranged on the main pipe in sequence, a plurality of nozzles are arranged at the bottom of the spray pipes, one end of the pump body is connected to the main pipe, and the other end of the pump body is connected to the bottom of the water tank.

[0017] The embodiment of the present application provides a push-pull pickling line acid mist purification device, which can perform a combined treatment of isolation, adsorption, filtration and pickling on the acid mist through the cooperation of an isolation cover, an adsorption mechanism, a shell, a filter, a water tank and a spray assembly, and can significantly reduce the emission of acid mist in the strip pickling process, which is not only helpful for environmental protection, but also can reduce the harm of acid mist to workers and improve the safety of the workplace. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 Schematic diagram of the three-dimensional structure provided in the embodiment of the present application Figure 1 ;

[0020] Figure 2 Schematic diagram of the three-dimensional structure provided in the embodiment of the present application Figure 2 ;

[0021] Figure 3 A front cross-sectional view of an adsorption mechanism provided in an embodiment of the present application;

[0022] Figure 4 This is a left side sectional view of the connection structure of the filtering mechanism and the pickling mechanism provided in an embodiment of the present application.

[0023] In the figure: 1. pickling tank; 2. isolation cover; 21. air inlet; 3. adsorption mechanism; 31. main pipeline; 32. branch pipeline; 33. fan; 34. demister; 4. filtering mechanism; 41. shell; 411. transfer tube; 42. filter; 421. partition; 422. activated carbon filter element; 5. pickling mechanism; 51. water tank; 52. spray assembly; 521. pump body; 522. main pipe; 523. spray pipe; 524. nozzle; 6. exhaust pipe; 7. drain valve; 8. water inlet valve. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] The embodiment of the present application provides an acid mist purification device for a push-pull pickling line, which can solve the problem in the related art that during the use of the push-pull pickling tank, acid gas will be generated due to the volatilization and chemical reaction of the acid solution, causing harm to the environment and workers.

[0026] See also Figure 1-Figure 3 A push-pull pickling line acid mist purification equipment includes: a pickling tank 1, a plurality of isolation covers 2 are sequentially arranged on the pickling tank 1, the isolation covers 2 are used to isolate the acid mist from escaping, an adsorption mechanism 3 is arranged on the isolation cover 2, the adsorption mechanism 3 is used to adsorb the acid mist inside the isolation cover 2, a filtering mechanism 4 for acid mist purification is arranged on the adsorption mechanism 3, and a pickling mechanism 5 is arranged on the filtering mechanism 4; the filtering mechanism 4 includes a shell 41, and a filter 42 for filtering acid mist inside the shell 41; the pickling mechanism 5 includes a water tank 51, the water tank 51 is filled with a solution for cleaning acid mist, and the water tank 51 is provided with a spray component 52 for spraying the cleaned gas.

[0027] The isolation cover 2 on the pickling tank 1 first plays an isolation role, limiting the acid mist generated during the pickling process to a specific area to prevent it from escaping into the environment. The adsorption mechanism 3 on the isolation cover 2 can adsorb the acid mist inside the isolation cover 2, effectively reducing the diffusion of the acid mist.

[0028] The filter mechanism 4 further processes the acid mist. A filter 42 is arranged inside the shell 41 of the filter mechanism 4. The filter 42 is usually made of a material that can adsorb and / or neutralize the acid mist. When the acid mist passes through the filter 42, the harmful substances therein are adsorbed or neutralized, thereby achieving preliminary purification of the acid mist.

[0029] The pickling mechanism 5 is the last step of purification. The pickling mechanism 5 includes a water tank 51 filled with a solution capable of cleaning the acid mist. When the acid mist or the filtered residue enters the solution inside the water tank 51 for cleaning, the cleaning solution is then sprayed out through the spray component 52 to contact the acid mist, thereby further neutralizing or cleaning out the acidic substances therein.

[0030] The cleaned gas will be collected or discharged to ensure that the purified gas meets environmental protection standards.

[0031] In summary, the combined treatment of isolation, adsorption, filtration and pickling can significantly reduce the emission of acid mist in the strip pickling process, which is not only conducive to environmental protection, but also can reduce the harm of acid mist to workers and improve the safety of the workplace.

[0032] Specifically, the isolation cover 2 in this embodiment is conical, a containing chamber is arranged inside the isolation cover 2, and a plurality of air inlet holes 21 are arranged at the bottom of the isolation chamber.

[0033] The isolation cover 2 is conical, which is conducive to the gathering and guidance of the acid mist, so that the acid mist can be captured by the adsorption mechanism 3 more effectively.

[0034] A containing chamber is arranged inside the isolation cover 2, and the chamber provides a relatively closed space for the acid mist, thereby reducing the escape of the acid mist and improving the purification efficiency.

[0035] A plurality of air inlet holes 21 are provided at the bottom of the isolation chamber, and these air inlet holes allow the acid mist generated by the pickling tank 1 to enter the interior of the isolation cover 2 .

[0036] The adsorption mechanism 3 in the preferred embodiment includes a main pipeline 31, a plurality of branch pipelines 32 and a fan 33. The plurality of branch pipelines 32 are sequentially arranged on the main pipeline 31. The other end of the branch pipeline 32 is connected to the accommodating chamber of the corresponding isolation cover 2. The air inlet of the fan 33 is connected to the main pipeline 31. The air outlet of the fan 33 is connected to the filter 42. A demister 34 is arranged inside the branch pipeline 32. The branch pipeline 32 is arranged vertically.

[0037] The main pipeline 31 is the main channel of the entire adsorption mechanism 3, connecting each branch pipeline 32 and the fan 33. Several branch pipelines 32 are arranged on the main pipeline 31 in sequence, ensuring that the acid mist in each isolation cover 2 can be effectively collected. The branch pipelines 32 are arranged vertically, and such a layout helps the natural sedimentation of the acid mist in the pipeline and reduces its residue in the pipeline.

[0038] The air inlet of the fan 33 is connected to the main pipeline 31, and the negative pressure generated by the fan 33 can attract the acid mist in the isolation cover 2 to enter the main pipeline 31 through the branch pipeline 32. The air outlet of the fan 33 is connected to the filter 42 to ensure that the acid mist treated by the adsorption mechanism 3 can directly enter the filtering mechanism 4 for further purification.

[0039] The demister 34 is arranged inside the branch pipe 32 , and its function is to further remove the liquid droplets and solid particles in the acid mist, and to make the liquid droplets flow back into the pickling tank 1 through the branch pipe 32 and the isolation cover 2 .

[0040] The type and specific design of the demister 34 can be selected according to actual conditions to achieve the best demister effect.

[0041] In actual operation, when the acid mist passes through the branch pipe 32, the demister 34 can effectively remove large droplets and solid particles therein. These particles may come from reaction products or impurities in the pickling process. If they are not removed in time, they may interfere with the subsequent purification process or damage the equipment.

[0042] The liquid droplets and solid particles treated by the demister 34 will flow back to the inside of the isolation cover 2 along the branch pipe 32 due to their own gravity and the guiding effect of the branch pipe 32. Since the isolation cover 2 is connected to the pickling tank 1, these refluxed liquid droplets will eventually return to the pickling tank 1, realizing the recycling of resources.

[0043] The reflux of liquid droplets is achieved through the demister 34, which reduces the emission and waste of acid mist and conforms to the concept of environmental protection and energy saving.

[0044] Furthermore, in this embodiment, one end of the shell 41 is connected to a transfer tube 411, and the other end of the transfer tube 411 extends to the solution inside the water tank 51; the filter 42 includes a partition 421 relatively arranged inside the shell 41, and a plurality of activated carbon filter elements 422 are inserted between the two partitions 421, and the activated carbon filter elements 422 extend to the outside of the partition 421 near one end of the transfer tube 411.

[0045] The filter 42 is mainly composed of two partitions 421 arranged opposite to each other inside the housing 41 and a plurality of activated carbon filter elements 422 .

[0046] The partition 421 divides the interior of the shell 41 into different areas, providing support and positioning for the activated carbon filter element 422 .

[0047] The activated carbon filter element 422 is inserted between the two partitions 421. Their main function is to adsorb and filter harmful substances in the acid mist. The activated carbon can effectively remove pigments, odors and trace pollutants in the acid mist due to its high specific surface area and strong adsorption capacity.

[0048] The other end of the transfer tube 411 extends into the solution inside the water tank 51, allowing the acid mist or gas that has undergone preliminary treatment to directly enter the solution in the water tank 51 through the transfer tube 411 for further neutralization or dissolution, thereby achieving a deeper purification effect.

[0049] It is worth noting that one end of the activated carbon filter element 422 close to the transfer tube 411 extends to the outside of the partition 421. This design allows the acid mist or gas that has been initially filtered to directly contact the activated carbon filter element 422, thereby improving the filtering efficiency and purification effect.

[0050] The acid mist enters the filter 42 through the adsorption mechanism 3, and the harmful substances therein are removed through the adsorption and filtering action of the activated carbon filter element 422. Subsequently, the acid mist enters the solution in the water tank 51 through the transfer tube 411 to be neutralized or dissolved.

[0051] Specifically, in this embodiment, the water tank 51 is provided with an exhaust pipe 6 , the exhaust pipe 6 is provided with a filter screen, and the water tank 51 is provided with a drain valve 7 and a water inlet valve 8 .

[0052] The function of the exhaust pipe 6 is to ensure that the gas inside the water tank can be discharged smoothly to avoid the pressure increase caused by gas accumulation.

[0053] The main function of the filter is to prevent the liquid or solid particles in the water tank 51 from being accidentally discharged, and it can also prevent external impurities from entering the water tank 51, thereby ensuring the purity of the liquid in the water tank 51.

[0054] The drain valve 7 is used to drain the liquid in the water tank 51. The design of the drain valve 7 should take into account factors such as easy operation, good sealing and corrosion resistance to ensure that the liquid in the water tank 51 can be drained quickly and effectively when needed.

[0055] The water inlet valve 8 is used to add new liquid into the water tank 51. The design of the water inlet valve 8 should take into account factors such as easy flow control, good sealing and corrosion resistance to ensure that an appropriate amount of liquid can be added into the water tank 51 as needed.

[0056] The water inlet valve 8 is usually connected to a water source, and the flow of liquid entering the water tank 51 can be adjusted by controlling the opening degree of the water inlet valve 8.

[0057] As a preferred embodiment, the spray assembly 52 in this embodiment includes a pump body 521, a main pipe 522 and a plurality of spray pipes 523. The pump body 521 is arranged on the water tank 51, the main pipe 522 is arranged inside the water tank 51, and the plurality of spray pipes 523 are arranged on the main pipe 522 in sequence. A plurality of nozzles 524 are arranged at the bottom of the spray pipes 523. One end of the pump body 521 is connected to the main pipe 522, and the other end of the pump body 521 is connected to the bottom of the water tank 51.

[0058] The pump body 521 is disposed on the water tank 51 and its function is to provide power to transport the liquid at the bottom of the water tank 51 to the spray system through the pipeline.

[0059] One end of the pump body 521 is connected to the main pipe 522, and the other end is connected to the bottom of the water tank 51, ensuring that the liquid can be smoothly extracted from the water tank 51 and pressurized and transported to the spray system through the pump body 521.

[0060] The main pipe 522 is arranged inside the water tank 51 , and its function is to serve as a main channel for liquid transportation, distributing the liquid transported by the pump body 521 to each spray pipe 523 .

[0061] The design of the main pipe 522 should take into account the flow rate and pressure distribution of the liquid to ensure that each spray pipe 523 can obtain sufficient liquid supply.

[0062] A plurality of spray pipes 523 are sequentially arranged on the main pipe 522 , and their number and positions are reasonably arranged according to the size and shape of the water tank 51 .

[0063] A plurality of nozzles 524 are provided at the bottom of each spray pipe 523. The function of the nozzles 524 is to spray the liquid evenly into the water tank 51 to fully contact and neutralize the acid mist.

[0064] The design of the nozzle 524 should take into account the spraying range and spraying effect to ensure that the liquid can evenly cover the entire interior of the water tank 51 and fully contact with the acid mist.

[0065] The material of the nozzle 524 should be corrosion-resistant to cope with the erosion of acid mist.

[0066] In this embodiment, the liquid inside the water tank 51 is water or alkaline liquid.

[0067] When the water tank 51 is filled with water, it is mainly used to dilute and capture the acidic substances in the acid mist. In the contact process of the acid mist and water, the acidic substances can be absorbed by water molecules, thereby reducing the concentration and corrosiveness of the acid mist.

[0068] Water is simple to use, low cost, easy to obtain and replace, and is suitable for use in situations where the acid mist concentration is low or the purification requirements are not high.

[0069] Alkaline liquids, such as sodium hydroxide solution, sodium carbonate solution, etc., have stronger neutralizing ability in the acid mist purification process. When the acid mist comes into contact with the alkaline liquid, the acidic substance will react with the alkaline substance to generate salt and water, thereby significantly reducing the acidity of the acid mist.

[0070] The use of alkaline liquid can significantly improve the efficiency and quality of acid mist purification, and is particularly suitable for occasions with high acid mist concentration or strict purification requirements.

[0071] It should be noted that the selection and use of alkaline liquid should be determined according to the specific acid mist composition and purification requirements to ensure the adequacy and effectiveness of the neutralization reaction.

[0072] By selecting water or alkaline liquid as the liquid inside the water tank 51, this embodiment can reduce the operating cost and maintenance difficulty of the equipment while ensuring the acid mist purification effect.

[0073] The low cost and easy availability of water make the equipment highly economical in long-term use; and the efficient neutralization ability of alkaline liquid can ensure that the equipment can maintain a stable purification effect under complex working conditions.

[0074] In summary, in this embodiment, water or alkaline liquid is selected as the purification medium in the water tank 51, which is a reasonable design based on the actual needs and technical principles of acid mist purification. This design can not only meet the purification requirements under different working conditions, but also has high economic benefits and stability.

[0075] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0076] It should be noted that, in this application, 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 such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0077] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A push-pull pickling line acid mist purification equipment, characterized in that: include: A pickling tank (1), wherein a plurality of isolation covers (2) are sequentially arranged on the pickling tank (1), wherein the isolation covers (2) are used to isolate acid mist from escaping, wherein an adsorption mechanism (3) is arranged on the isolation cover (2), wherein the adsorption mechanism (3) is used to adsorb the acid mist inside the isolation cover (2), wherein a filtering mechanism (4) for purifying the acid mist is arranged on the adsorption mechanism (3), and wherein a pickling mechanism (5) is arranged on the filtering mechanism (4); The filtering mechanism (4) comprises a housing (41), and a filter (42) inside the housing (41) for filtering acid mist; The pickling mechanism (5) comprises a water tank (51), the interior of the water tank (51) is filled with a solution for cleaning acid mist, and a spray component (52) for spraying the cleaned gas is arranged inside the water tank (51).

2. A push-pull type pickling line acid mist purification equipment as claimed in claim 1, characterized in that: The isolation cover (2) is conical in shape, a containing chamber is arranged inside the isolation cover (2), and a plurality of air inlet holes (21) are arranged at the bottom of the isolation chamber.

3. A push-pull type pickling line acid mist purification equipment as claimed in claim 1, characterized in that: The adsorption mechanism (3) comprises a main pipeline (31), a plurality of branch pipelines (32) and a fan (33); the plurality of branch pipelines (32) are sequentially arranged on the main pipeline (31); the other end of the branch pipeline (32) is connected to the accommodating chamber of the corresponding isolation cover (2); the air inlet of the fan (33) is connected to the main pipeline (31); the air outlet of the fan (33) is connected to the filter (42); and a demister (34) is arranged inside the branch pipeline (32).

4. A push-pull type pickling line acid mist purification equipment as claimed in claim 1, characterized in that: One end of the housing (41) is connected to a transfer tube (411), and the other end of the transfer tube (411) extends into the solution inside the water tank (51); The filter (42) comprises a partition (421) arranged relatively inside the housing (41), a plurality of activated carbon filter cores (422) are inserted between the two partitions (421), and the activated carbon filter core (422) extends to the outside of the partition (421) at one end close to the transfer tube (411).

5. A push-pull type pickling line acid mist purification equipment as claimed in claim 1, characterized in that: The water tank (51) is provided with an exhaust pipe (6), the exhaust pipe (6) is provided with a filter screen, and the water tank (51) is provided with a drain valve (7) and a water inlet valve (8).

6. A push-pull type pickling line acid mist purification equipment as claimed in claim 1, characterized in that: The spray assembly (52) comprises a pump body (521), a main pipe (522) and a plurality of spray pipes (523); the pump body (521) is arranged on the water tank (51); the main pipe (522) is arranged inside the water tank (51); the plurality of spray pipes (523) are arranged on the main pipe (522) in sequence; a plurality of spray heads (524) are arranged at the bottom of the spray pipes (523); one end of the pump body (521) is connected to the main pipe (522); and the other end of the pump body (521) is connected to the bottom of the water tank (51).

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