Side suction structure for volatile gas of pickling tank

Abstract

The utility model relates to a pickling tank volatile gas side suction structure, which comprises a gas collecting hood, a cooling tank and a spraying tank, the gas collecting hood is arranged on the side of a pickling tank body, the gas collecting hood is communicated with the cooling tank through a first pipeline, the cooling tank is communicated with the spraying tank through a second pipeline, the gas collecting hood is connected with an induced draft fan, and the top of the spraying tank is communicated with an exhaust pipe. Concentrated sulfuric acid mist volatilized by concentrated sulfuric acid is introduced into the cooling tank through the induced draft fan, and the concentrated sulfuric acid mist is cooled through the cooling tank to be condensed into liquid, so that the concentrated sulfuric acid is conveniently recycled; the non-condensed concentrated sulfuric acid mist flows into the spraying tank through the second pipeline, the spraying tank sprays the concentrated sulfuric acid mist to convert the concentrated sulfuric acid mist into harmless substances, and the exhaust pipe exhausts generated harmless gas into the air, so that the gas emitted by the concentrated sulfuric acid can be effectively prevented from being exhausted into the air, and the pollution to the environment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a circuit board production equipment technical field, concretely relates to a pickling tank volatile gas side suction structure. BACKGROUND

[0002] The copper foil is generated on the surface of the anode plate through the oxidation-reduction reaction, and is used for producing the copper foil for the lithium battery. In the production process, the anode plate needs to be pickled. In the pickling process, the anode plate is placed in the anode plate pickling fixture, and the hook hangs the anode plate pickling fixture to enter the pickling tank, the pure water tank, the ultrasonic tank and the pure water tank (hot water) in turn. In the process of pickling, concentrated sulfuric acid in the pickling tank will volatilize gas. If these gases are directly discharged into the atmosphere, they will cause great pollution to the environment, especially the emission of harmful gases such as acid mist and sulfur dioxide, which will have a serious impact on the atmosphere, water quality and soil. SUMMARY

[0003] The utility model discloses a pickling tank volatile gas side suction structure, which is designed to solve the technical problems raised in the background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme: a pickling tank volatile gas side suction structure, including gas collecting cover, cooling jar and spray tank, the gas collecting cover sets up at the side of pickling tank body, the gas collecting cover passes through first pipe and cooling jar intercommunication, cooling jar passes through second pipe and spray tank intercommunication, the gas collecting cover is connected with draught fan, the top of spray tank is connected with exhaust pipe.

[0005] Further, the cooling tank is provided with a cooling plate, and the bottom of the cooling tank is connected with a first reflux pipe.

[0006] Further, the top of the spray tank is provided with a plurality of annular spray pipes, and a plurality of spray openings are circumferentially arranged on each spray pipe.

[0007] Further, a filler assembly is arranged below the spray pipe, and a plurality of air holes are arranged on the filler assembly.

[0008] Further, a sulfuric acid gas detector and a first valve are mounted on the exhaust pipe, the exhaust pipe is connected with a second reflux pipe, a second valve is mounted on the second reflux pipe, and the second reflux pipe is connected with the spray tank.

[0009] Compared with the prior art, the beneficial effects of the utility model are: the utility model discloses through the air draught fan, the concentrated sulfuric acid mist of concentrated sulfuric acid volatilization is introduced into the cooling tank, the concentrated sulfuric acid mist is cooled through the cooling tank, makes it condense into liquid, thereby convenient for the recycling of concentrated sulfuric acid, the concentrated sulfuric acid mist that has not condensed flows into the spray tank in the second pipeline, the concentrated sulfuric acid mist is handled through the spray tank, makes it into harmless substance, the harmless gas generated is discharged into the air through the exhaust pipe, therefore the utility model can effectively avoid that the gas of concentrated sulfuric acid is discharged into the air, reduces the pollution to the environment. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 It is whole structure schematic diagram of the utility model;

[0011] Fig. 2 It is sectional view of the utility model;

[0012] The names of the components marked in the figure are as follows: 1, gas collecting hood;2, cooling tank;3, spray tank;4, first pipeline;5, second pipeline;6, air draught fan;7, exhaust pipe;8, cooling plate;9, first backflow pipe;10, pump body;11, spray pipe;12, filler assembly;13, sulfuric acid gas detector;14, first valve;15, second backflow pipe;16, second valve;17, pickling tank body. DETAILED DESCRIPTION

[0013] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0014] Embodiment: please refer to Figs. 1-2 A pickling tank volatile gas side suction structure, including gas collecting hood 1, cooling tank 2 and spray tank 3, cooling tank 2 and spray tank 3 are all fixed on the wall through support, gas collecting hood 1 is arranged in the side of the top of pickling tank body 17, concentrated sulfuric acid mist is absorbed from the side, is favorable to the arrangement, and can improve the exhaust efficiency simultaneously;Gas collecting hood 1 is communicated with cooling tank 2 through first pipeline 4, cooling tank 2 is communicated with spray tank 3 through second pipeline 5, gas collecting hood 1 is connected with air draught fan 6, and the top of spray tank 3 is communicated with exhaust pipe 7;Concentrated sulfuric acid mist of concentrated sulfuric acid volatilization is introduced into cooling tank 2 through air draught fan 6, cooling tank 2 cools concentrated sulfuric acid mist, makes it condense into liquid, and the condensed concentrated sulfuric acid mist can be recycled;The condensed concentrated sulfuric acid mist flows into spray tank 3 through first pipeline 4, and the concentrated sulfuric acid mist is handled through spray tank 3, makes it into harmless substance, and the harmless gas generated is discharged into the air through exhaust pipe 7, therefore the utility model can effectively avoid that concentrated sulfuric acid mist flows into the atmosphere, reduces the pollution to the environment.

[0015] In the above embodiment, the cooling tank 2 is provided with a cooling plate 8, and the cooling plate 8 is provided with a gas guide hole. When the concentrated sulfuric acid mist flows through the cooling plate 8, the temperature of the concentrated sulfuric acid mist will rapidly decrease, so that the concentrated sulfuric acid mist is condensed into liquid. The bottom of the cooling tank 2 is communicated with a first reflux pipe 9, and the first reflux pipe 9 is connected with a pump body 10. The condensed liquid is recycled into the pickling tank body 17 through the pump body 10, so that the sulfuric acid liquid is recycled and utilized.

[0016] In an optional embodiment, the top of the spray tank 3 is provided with a plurality of annular spray pipes 11. Each spray pipe 11 is circumferentially provided with a plurality of spray openings. The plurality of spray pipes 11 are communicated with a liquid feeding pipe for feeding the spray liquid. The liquid feeding pipe penetrates through the side wall of the spray tank 3. The spray liquid is sprayed into the spray tank 3 through the plurality of annular spray pipes 11, so that the spray liquid is uniformly distributed in the spray tank 3 and fully contacts with the concentrated sulfuric acid mist, which is beneficial to the full reaction of the concentrated sulfuric acid mist and the spray liquid. The spray liquid can be, but is not limited to, an alkaline solution (such as sodium hydroxide solution). The alkaline solution reacts with the sulfuric acid mist to convert the sulfuric acid mist into harmless substances.

[0017] In an optional embodiment, a filler assembly 12 is arranged below the spray pipe 11. The filler assembly 12 is provided with a plurality of air holes. On the one hand, the filler assembly 12 can block the flow rate of the concentrated sulfuric acid mist, so that the concentrated sulfuric acid mist stays in the spray tank 3 for a longer time, which is beneficial to the full reaction of the concentrated sulfuric acid mist and the spray liquid and improves the treatment effect of the concentrated sulfuric acid mist. On the other hand, the surface of the filler assembly 12 can adhere to the spray liquid, so as to increase the contact area of the concentrated sulfuric acid mist and the spray liquid, so that the spray liquid fully contacts and reacts with the concentrated sulfuric acid mist, thereby improving the treatment effect of the concentrated sulfuric acid mist. Specifically, the filler assembly 12 is a prior art, which will not be described here.

[0018] In the above embodiment, the exhaust pipe 7 is provided with a sulfuric acid gas detector 13 and a first valve 14. The sulfuric acid content in the gas is detected by the sulfuric acid gas detector 13. The exhaust pipe 7 is communicated with a second reflux pipe 15. The second reflux pipe 15 is communicated with the spray tank 3. The second reflux pipe 15 is provided with a second valve 16. If the sulfuric acid content in the gas exceeds the standard, the first valve 14 is closed and the second valve 16 is opened. The gas cannot be directly discharged into the atmosphere. The gas flows into the spray tank 3 again through the second reflux pipe 15, so as to be treated again. Until the content of the concentrated sulfuric acid mist reaches the standard of emission, the first valve 14 is opened and the gas is discharged into the atmosphere. The bottom of the spray tank 3 is provided with a sewage outlet. The generated liquid and impurities are discharged from the sewage outlet.

[0019] The working principle of the embodiment is as follows: during the process of pickling the anode plate by using concentrated sulfuric acid, the induced draft fan 6 is opened, the concentrated sulfuric acid mist volatilized from the concentrated sulfuric acid is introduced into the cooling tank 2 through the induced draft fan 6, the concentrated sulfuric acid mist is cooled by the cooling plate 8 to condense into sulfuric acid liquid, the sulfuric acid liquid is pumped from the cooling tank 2 into the pickling pool body 17 through the pump body 10, the sulfuric acid mist not condensed flows into the spray tank 3 from the second pipeline 5, the spray liquid is sprayed into the spray tank 3 through the annular spray pipe 11, the concentrated sulfuric acid mist and the spray liquid fully react to generate harmless substances, the content of concentrated sulfuric acid in the gas is detected by the sulfuric acid gas detector 13, if the content of sulfuric acid does not exceed the standard, the first valve 14 is opened, and the gas is discharged into the atmosphere; if the content of sulfuric acid in the gas exceeds the standard, the first valve 14 is closed, and the second valve 16 is opened, the gas is introduced into the spray tank 3 again, so that the gas is treated by spraying again until the content of sulfuric acid in the gas meets the emission standard; the above process can effectively avoid that the gas volatilized from the concentrated sulfuric acid is discharged into the air, and the pollution to the environment is reduced.

[0020] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with reference to the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, change, equivalent change and modification of the above embodiment according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. An acid washing tank volatile gas side suction structure, characterized in that: Including gas cover (1), cooling tank (2) and spray tank (3), the gas cover (1) is arranged at the side of pickling tank body (17), the gas cover (1) is communicated with the cooling tank (2) by first pipeline (4), the cooling tank (2) is communicated with the spray tank (3) by second pipeline (5), the gas cover (1) is connected with induced draft fan (6), the top of the spray tank (3) is communicated with exhaust pipe (7).

2. The pickling tank volatile gas side suction structure according to claim 1, characterized by: Cooling plate (8) is arranged in the cooling tank (2), the bottom of the cooling tank (2) is communicated with first backflow pipe (9), the first backflow pipe (9) is connected with pump body (10).

3. The pickling tank volatile gas side suction structure according to claim 1, characterized by: The top of the spray tank (3) is provided with a plurality of annular spray pipes (11), a plurality of spray openings are circumferentially formed on each of the spray pipes (11).

4. The pickling tank volatile gas side suction structure according to claim 3, characterized by: A filler assembly (12) is arranged below the spray pipe (11), and a plurality of air holes are formed on the filler assembly (12).

5. The pickling tank volatile gas side suction structure according to claim 1, characterized by: A sulfuric acid gas detector (13) and a first valve (14) are mounted on the exhaust pipe (7), the exhaust pipe (7) is communicated with a second backflow pipe (15), the second backflow pipe (15) is provided with a second valve (16), and the second backflow pipe (15) is communicated with the spray tank (3).

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