CN221656252U - Waste gas purification device for pickling sheet processing - Google Patents

Abstract

The utility model discloses an exhaust gas purification device for processing an acid-washing thin plate, which comprises a reaction kettle, wherein the side surface of the reaction kettle is connected with a purification cylinder through an air inlet pipe, a filter screen is arranged in the purification cylinder, an air suction fan is arranged on the air inlet pipe, a filler layer is arranged in the reaction kettle, a stirring assembly is arranged below the filler layer, one side of the reaction kettle is connected with a main pipeline through a circulating pipe, a plurality of spray heads are arranged below the main pipeline, and a water pump is arranged on the circulating pipe. The utility model has scientific and reasonable structural design, can prevent the particulate impurities from entering the inner cavity of the reaction kettle to contact with the neutralizing liquid to cause the particulate impurities to be polluted, can lift the liquid at the lower part of the inner cavity of the reaction kettle to be sprayed out to the upper part by arranging the structures such as the circulating pipe, the water pump and the like, and further improves the purification quality by purifying the ascending air flow again through the liquid, ensures the liquidity of the liquid in the reaction kettle and can fully realize the purification effect on the waste gas.

Description

A waste gas purification device for pickling thin plate processing

Technical Field

The utility model relates to the technical field of waste gas purification equipment, in particular to a waste gas purification device for pickling thin plate processing.

Background Art

The hot-dip galvanizing process of thin plates usually includes seven steps: stacking, pickling, cleaning, drying, hot-dip galvanizing, cooling and passivation. When the galvanized workpiece is dipped in zinc, smoke containing particles of substances such as ammonium chloride, zinc chloride, and zinc oxide will be produced, as well as dust that can be oxygenated when scooping zinc ash. Galvanizing workers will often inhale particles of substances such as ammonium chloride, zinc chloride, and zinc oxide, which poses a potential threat to the health of workers. Therefore, an exhaust gas purification device is used in conjunction with the pickling process. The existing exhaust gas purification device for pickling of thin plates has the following problems when treating exhaust gas: the particulate matter in the exhaust gas is easy to contaminate the alkaline liquid used to neutralize the exhaust gas, resulting in a shortened service life of the alkaline liquid; the reaction rate of the exhaust gas with the neutralizing liquid is slow, and the processing efficiency is low. To this end, we propose an exhaust gas purification device for pickling thin plate processing.

Utility Model Content

The utility model aims to provide a waste gas purification device for pickling thin plate processing to solve the problems raised in the above background technology.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste gas purification device for pickling thin plate processing, comprising a reactor, the side of the reactor is connected to the purification cylinder through an air intake pipe, a filter is arranged in the purification cylinder, a suction fan is arranged on the air intake pipe, a packing layer is arranged in the reactor, and a stirring assembly is arranged below the packing layer, one side of the reactor is connected to the main pipeline through a circulation pipe, a plurality of nozzles are arranged below the main pipeline, and a water pump is arranged on the circulation pipe, a discharge pipe is arranged at the exhaust port on the top of the reactor, and an acid detector is arranged in the discharge pipe.

In the above solution, a cylinder cover is screwed on the top of the purification cylinder, and pipe joints are provided on the purification cylinder and the cylinder cover.

In the above scheme, the stirring assembly includes a stirrer consisting of a rotating shaft and a stirring paddle, and a driving mechanism is connected to the bottom of the rotating shaft.

In the above scheme, one side of the reactor is connected to the aeration mechanism through an aeration pipe.

In the above solution, a solenoid valve is provided on the circulation pipe.

In the above solution, a discharge valve is provided at the outlet of the discharge pipe.

In the above scheme, the inner cavity of the reactor is filled with alkaline neutralization liquid, and a water level gauge is arranged inside the reactor.

Compared with the prior art, the utility model has the following beneficial effects: the waste gas purification device for pickling thin plate processing has a simple and reasonable structural design and strong practicality. By arranging a purification cylinder with a built-in filter at the front end of the reactor, the particulate impurities inside the reactor can be filtered when the waste gas is introduced into the reactor through the suction fan, thereby preventing the particulate impurities from entering the inner cavity of the reactor and contacting with the neutralizing liquid to cause it to be contaminated. The purification cylinder is connected to the cylinder cover and to the corresponding connecting pipe in a detachable manner, which is convenient for cleaning the inside. Under the action of the driving mechanism, the liquid inside the reactor can be driven to rotate by the stirring paddle, and at the same time, the liquid fluidity can be improved under the action of the aeration mechanism, further enhancing the contact effect between the neutralizing liquid and the acidic waste gas in the reactor, and fully improving the processing quality. By arranging structures such as a circulation pipe and a water pump, the liquid in the lower part of the reactor cavity can be lifted to the upper part for spraying, and the rising airflow is purified again by the liquid, which further improves the purification quality, ensures the liquid fluidity in the reactor, and can fully achieve the purification effect of the waste gas.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the internal structure of the utility model.

FIG. 2 is a schematic diagram of the structure of the purification cartridge of the utility model.

In the figure: 1 reactor, 11 air inlet pipe, 12 purification cylinder, 13 suction fan, 14 cylinder cover, 15 filter, 16 pipe joint, 17 driving mechanism, 18 stirring paddle, 19 packing layer, 2 circulation pipe, 21 water pump, 22 main pipeline, 23 nozzle, 24 aeration pipe, 25 aeration mechanism, 26 discharge pipe, 27 acid detector, 28 discharge valve.

DETAILED DESCRIPTION

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

Please refer to Figures 1-2. The utility model provides a technical solution: an exhaust gas purification device for pickling thin plate processing, including a reactor 1, the side of the reactor 1 is connected to a purification cylinder 12 through an air inlet pipe 11, a filter screen 15 is arranged in the purification cylinder 12, the filter screen 15 and the purification cylinder 12 are detachably connected, a suction fan 13 is arranged on the air inlet pipe 11, a packing layer 19 is arranged in the reactor 1, and the packing layer 19 is supported by a supporting mechanism, under the action of which a place for gas-liquid contact is provided to enhance the contact area between the alkaline neutralizing liquid and the acidic gas, thereby improving the neutralization effect on the acidic gas.

A stirring assembly is provided below the packing layer 19, one side of the reactor 1 is connected to the main pipeline 22 through a circulation pipe 2, a plurality of nozzles 23 are provided below the main pipeline 22, and a water pump 21 is provided on the circulation pipe 2. By providing the circulation pipe 2, the water pump 21 and other structures, the liquid in the lower part of the inner cavity of the reactor 1 can be lifted to the upper part and sprayed out, and the rising airflow is purified again by the liquid, which further improves the purification quality, ensures the fluidity of the liquid in the reactor 1, and can fully realize the purification effect of the exhaust gas.

The exhaust port at the top of the reactor 1 is provided with a discharge pipe 26, and an acid detector 27 is provided in the discharge pipe 26. Specifically, the acid detector 27 is an existing mechanism, under which the acidity inside the airflow can be detected to avoid the phenomenon of substandard discharge.

In the above scheme, the top of the purification cylinder 12 is screwed with a cylinder cover 14, and the purification cylinder 12 and the cylinder cover 14 are both provided with a pipe joint 16. The pipe joint 16 is connected to the corresponding pipeline by a screw connection. By providing the purification cylinder 12 with a built-in filter 15 at the front end of the reactor 1, the particulate impurities inside the reactor 1 can be filtered when the exhaust gas is introduced into the reactor 1 by the suction fan 13, thereby preventing the particulate impurities from entering the inner cavity of the reactor 1 and contacting with the neutralizing liquid to cause it to be contaminated, and the purification cylinder 12 is connected to the cylinder cover 14 and the corresponding connecting pipeline in a detachable connection manner, which is convenient for cleaning the inside.

In the above solution, the stirring assembly includes a stirrer composed of a rotating shaft and a stirring paddle 18, and the bottom of the rotating shaft is connected to a driving mechanism 17. Specifically, the driving mechanism 17 includes a driving motor with waterproof measures.

In the above scheme, one side of the reactor 1 is connected to the aeration mechanism 25 through the aeration pipe 24. Under the action of the driving mechanism 17, the liquid inside the reactor 1 can be driven to rotate through the stirring paddle 18, and the liquid fluidity can be improved under the action of the aeration mechanism 25, further enhancing the contact effect between the neutralized liquid and the acidic waste gas in the reactor 1, and fully improving the processing quality.

In the above scheme, a solenoid valve is provided on the circulation pipe 2. The opening and closing of the corresponding pipeline can be controlled by the solenoid valve 2.

In the above scheme, the outlet of the discharge pipe 26 is provided with a discharge valve 28. When the acid detector 27 detects that the acidity of the discharged airflow drops below the standard level, the discharge valve 28 is opened to discharge the purified airflow.

In the above scheme, the inner cavity of the reactor 1 is filled with alkaline neutralizing liquid, and a water level gauge is arranged inside the reactor 1. The design of the water level gauge can detect the water level inside the reactor 1, so that the user can replenish the liquid in time.

Working principle:

Specifically, when in use, the exhaust gas purification device for pickling thin plate processing connects the purification cylinder 12 with the cylinder cover 14, and the pipe joint 16 on the top of the cylinder cover 14 is connected with the exhaust gas discharge mechanism. Under the action of the suction fan 13, the exhaust gas passes through the purification cylinder 12 and enters the reactor 1. In this process, the particulate impurities in the exhaust gas are fully filtered and treated by the filter screen 15. After entering the reactor 1, the purified exhaust gas contacts with the alkaline neutralizing liquid. Under the action of the driving mechanism 17, the liquid in the reactor 1 can be driven to rotate by the stirring paddle 18. At the same time, the liquid fluidity can be improved under the action of the aeration mechanism 25, and the contact effect between the neutralizing liquid and the acidic exhaust gas in the reactor 1 is further enhanced. By setting the circulation pipe 2, the water pump 21 and other structures, the liquid in the lower part of the inner cavity of the reactor 1 can be lifted to the upper part for spraying, and the rising airflow is purified again by the liquid, which further improves the purification quality. When the acid detector 27 detects that the acidity of the discharged airflow drops below the standard level, the discharge valve 28 is opened to discharge the purified airflow.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A waste gas purification device for pickling thin plate processing, comprising a reactor (1), characterized in that: the side of the reactor (1) is connected to a purification cylinder (12) through an air intake pipe (11), a filter screen (15) is arranged in the purification cylinder (12), a suction fan (13) is arranged on the air intake pipe (11), a packing layer (19) is arranged in the reactor (1), and a stirring component is arranged below the packing layer (19), one side of the reactor (1) is connected to a main pipeline (22) through a circulation pipe (2), a plurality of nozzles (23) are arranged below the main pipeline (22), and a water pump (21) is arranged on the circulation pipe (2), and a discharge pipe (26) is arranged at the exhaust port on the top of the reactor (1), and an acid detector (27) is arranged in the discharge pipe (26). 2. An exhaust gas purification device for pickling thin plate processing according to claim 1, characterized in that a cylinder cover (14) is screwed on the top of the purification cylinder (12), and pipe joints (16) are provided on the purification cylinder (12) and the cylinder cover (14). 3. The waste gas purification device for pickling thin plate processing according to claim 1 is characterized in that the stirring assembly includes a stirrer consisting of a rotating shaft and a stirring paddle (18), and a driving mechanism (17) is connected to the bottom of the rotating shaft. 4. The waste gas purification device for pickling thin plate processing according to claim 1 is characterized in that one side of the reaction kettle (1) is connected to the aeration mechanism (25) through an aeration pipe (24). 5. The waste gas purification device for pickling thin plate processing according to claim 1, characterized in that a solenoid valve is provided on the circulation pipe (2). 6. The waste gas purification device for pickling thin plate processing according to claim 1 is characterized in that a discharge valve (28) is provided at the outlet of the discharge pipe (26). 7. The waste gas purification device for pickling thin plate processing according to claim 1 is characterized in that the inner cavity of the reaction kettle (1) is filled with alkaline neutralizing liquid and a water level gauge is arranged inside.