Acid mist recovery device for strip steel galvanization production line

Abstract

The utility model provides an acid mist recovery device for a strip steel galvanization production line, which relates to the technical field of strip steel galvanization production devices and comprises a recovery cover, a recovery branch pipe, a condensation cavity, a recovery bottle and an exhaust pipe. The recycling branch pipe is connected with an exhaust port in the top of the recycling cover, the condensation cavity is arranged at the air outlet end of the recycling branch pipe, the recycling bottle is detachably installed at the bottom of the condensation cavity, and the exhaust pipe is connected to the top of the condensation cavity and connected with the fan device. And the acid mist is easy to condense and flow back in the exhaust pipe and accumulate in the pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of strip steel galvanizing production equipment, in particular to an acid mist recovery device for a strip steel galvanizing production line. Background Art

[0002] Strip galvanizing requires rust removal, first bending repeatedly to peel off and loosen the oxide scale, and then pickling. During pickling, more oxide scale is peeled off by hydrogen generated by the reaction of acid and steel base, which is a common method used in the strip steel industry. The process acid of the pickling method needs to be heated to about 70 degrees Celsius (depending on the acid), which increases the generation of acid mist.

[0003] In order to avoid acid mist pollution and improve the utilization rate of residual acid, acid mist needs to be recovered. The current recovery method is to install a recovery hood above the pickling tank. The recovery is connected to the exhaust pipe and the fan device, and the fan device is used to suck and collect the acid mist.

[0004] The current acid mist device has the following problems during use: first, the acid mist is easy to condense on the edge of the recovery cover and drip onto the equipment or the ground along the edge of the recovery cover, which not only reduces the recovery rate of residual acid, but also causes corrosion to equipment and personnel and environmental pollution; second, the acid mist is easy to condense and reflux in the exhaust pipe and accumulate in the pipeline, which not only reduces the recovery rate, but also easily corrodes the pipeline and increases the maintenance cost of the pipeline. Therefore, the present application proposes an acid mist recovery device for a strip galvanizing production line. Utility Model Content

[0005] In order to overcome the problems in the background technology, the utility model provides an acid mist recovery device for a strip steel galvanizing production line, which solves the problems that the acid mist is easily condensed on the edge of a recovery cover and drips along the edge of the recovery cover to the equipment or the ground, and the acid mist is easily condensed and refluxed in the exhaust pipe and accumulated in the pipeline.

[0006] An acid mist recovery device for a strip steel galvanizing production line comprises a recovery hood, a recovery branch pipe, a condensation chamber, a recovery bottle and an exhaust pipe, wherein a condensation groove is arranged at the bottom edge of the inner wall of the recovery hood, a drainage interface is arranged on the condensation groove, the recovery branch pipe is connected with the exhaust port at the top of the recovery hood, the condensation chamber is arranged at the air outlet end of the recovery branch pipe, the recovery bottle is detachably mounted at the bottom of the condensation chamber, and the exhaust pipe is connected to the top of the condensation chamber and is connected to a fan device.

[0007] Furthermore, the condensation tank is arranged obliquely at the bottom of the inner wall of the recovery hood, and the drainage interface is arranged on one side of the slope bottom of the condensation tank.

[0008] Furthermore, the recovery branch pipe is arranged at an angle, and the air outlet end of the recovery branch pipe is arranged at one end of the bottom of the slope.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The bottom edge of the recovery hood of the present application is provided with a condensation groove, which can recover the acid condensed on the hood wall, thereby solving the problem that the acid mist is easily condensed on the edge of the recovery hood and drips onto the equipment or the ground along the edge of the recovery hood. A condensation chamber is provided between the exhaust pipe and the recovery branch pipe of the present application, and a recovery bottle is installed on the condensation chamber, which can collect the condensed and refluxed acid for utilization, thereby avoiding the problem of acid accumulation in the pipeline and increasing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in describing the embodiments are described.

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the working structure of the utility model.

[0015] 1-recovery cover, 11-condensation tank, 12-drainage interface, 13-exhaust port, 2-recovery branch pipe, 3-condensation chamber, 4-recovery bottle, 5-exhaust pipe, 6-fan device, 7-pickling tank. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians.

[0017] The utility model discloses an acid mist recovery device for a strip steel galvanizing production line. Figure 1-3 A kind of acid mist recovery device for strip steel galvanizing production line includes a recovery cover 1, a recovery branch pipe 2, a condensation chamber 3, a recovery bottle 4 and an exhaust pipe 5. The bottom edge of the inner wall of the recovery cover 1 is provided with a condensation groove 11, and the condensation groove 11 is provided with a drainage interface 12. The recovery branch pipe 2 is connected with the exhaust port 13 at the top of the recovery cover 1. The condensation chamber 3 is arranged at the gas outlet end of the recovery branch pipe 2. The recovery bottle 4 is detachably installed at the bottom of the condensation chamber 3. The exhaust pipe 5 is connected to the top of the condensation chamber 3 and is connected to the fan device 6.

[0018] The recovery hood 1 can be installed above the pickling tank 7 through a bracket, the recovery branch pipe 2 can be connected to the exhaust port 13 on the top of the recovery hood 1, and the exhaust pipe 5 can be connected to the fan device 6 and the recovery branch pipe 2. The fan device 6 generates a negative pressure airflow to extract the volatilized acid mist in the pickling tank 7 below the recovery hood 1 and discharge it into the condensation tower for recovery. During the exhaust process, the acid mist condensed in the recovery hood 1 can flow into the condensation tank 11 along the inner wall, and then be discharged into the recovery equipment through the recovery pipeline connected to the drain interface 12. The acid liquid condensed and refluxed in the exhaust pipe 5 can enter the recovery bottle 4 from the condensation chamber 3 for recycling.

[0019] See also Figure 1-3 The condensation tank 11 is tilted at the bottom of the inner wall of the recovery cover 1, and the drainage interface 12 is arranged on one side of the slope bottom of the condensation tank 11, so that the condensed acid can flow out of the condensation tank 11 through the drainage interface 12 in time.

[0020] See also Figure 1-3 The recovery branch pipe 2 is arranged at an angle, and the gas outlet end of the recovery branch pipe 2 is arranged at one end of the bottom of the slope to avoid residual acid liquid in the recovery branch pipe 2.

[0021] Working process:

[0022] The recovery hood 1 is installed above the pickling tank 7 through a bracket. During pickling, the fan device 6 is started to generate a negative pressure airflow through the fan device 6 to extract the volatilized acid mist in the pickling tank 7 below the recovery hood 1 and discharge it into the condensation tower for recovery. During the exhaust process, the acid mist condensed in the recovery hood 1 can flow into the condensation tank 11 along the inner wall, and then be discharged into the recovery equipment through the recovery pipeline connected to the drain interface 12. The acid liquid condensed and refluxed in the exhaust pipe 5 can enter the recovery bottle 4 from the condensation chamber 3 for recycling.

[0023] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An acid mist recovery device for a strip steel galvanizing production line, characterized in that: The invention comprises a recovery cover (1), a recovery branch pipe (2), a condensation chamber (3), a recovery bottle (4) and an exhaust pipe (5); a condensation groove (11) is arranged at the bottom edge of the inner wall of the recovery cover (1); a drainage interface (12) is arranged on the condensation groove (11); the recovery branch pipe (2) is connected to an exhaust port (13) at the top of the recovery cover (1); the condensation chamber (3) is arranged at the exhaust end of the recovery branch pipe (2); the recovery bottle (4) is detachably mounted at the bottom of the condensation chamber (3); and the exhaust pipe (5) is connected to the top of the condensation chamber (3) and is connected to a fan device (6).

2. The acid mist recovery device for the strip steel galvanizing production line according to claim 1 is characterized in that: The condensation tank (11) is arranged obliquely at the bottom of the inner wall of the recovery cover (1), and the drainage interface (12) is arranged on one side of the slope bottom of the condensation tank (11).

3. The acid mist recovery device for the strip steel galvanizing production line according to claim 1 is characterized in that: The recovery branch pipe (2) is arranged at an angle, and the air outlet end of the recovery branch pipe (2) is arranged at one end of the bottom of the slope.

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