Galvanizing pool waste gas treatment device

Abstract

The utility model discloses a galvanizing bath waste gas treatment device, which belongs to the technical field of waste gas treatment and comprises a purification tank, the bottom end of one side wall of the purification tank is connected with a gas guide pipe, one end of the gas guide pipe is connected with an exhaust hood, and the bottom end of the exhaust hood is provided with a folding sealing component. By designing a group of lifting sealing mechanism consisting of the driving motor, the driving wheel, the belt, the driven wheel, the two-way screw rod, the screw block, the linkage rod, the telescopic folding cover and the connecting ring, in the galvanizing process, the driving motor drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate through the belt, and the driving wheel and the driven wheel respectively drive the two-way screw rod to rotate; and in the moving process, the linkage rod rotates along with the screw block and stretches the telescopic folding cover through the connecting ring, then the telescopic folding cover seals a hole between the galvanizing bath and the air exhaust cover, waste liquid can be effectively prevented from overflowing, and the treatment effect of the device and the air quality of a workshop are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a waste gas treatment device for a galvanizing bath. Background Technique

[0002] Galvanizing refers to a surface treatment technology in which a layer of zinc is plated on the surface of metal, alloy or other materials for aesthetics, rust prevention and other purposes. The main method used is hot-dip galvanizing. During the galvanizing process, harmful waste gas is generated, and thus it needs to be treated to meet the standards before being discharged.

[0003] In the existing waste gas treatment device for a galvanizing bath, during use, an air extraction mechanism is installed above the galvanizing bath, and the waste gas generated during the galvanizing process is extracted into a purification tank and treated with a liquid medicine to achieve the treatment of the waste gas. In the above method, during the air extraction process, since the air extraction mechanism and the galvanizing bath are separated, some waste gas cannot be extracted, resulting in its diffusion in the workshop. On the one hand, it affects the air quality in the workshop, and on the other hand, it causes poor treatment effect of the device. Therefore, a waste gas treatment device for a galvanizing bath is urgently needed to solve the above problems. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a waste gas treatment device for a galvanizing bath.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A waste gas treatment device for a galvanizing bath, including a purification tank. One end of a guide pipe is connected to the bottom end of one side wall of the purification tank, and the other end of the guide pipe is connected to an air extraction hood. A folding sealing assembly is arranged at the bottom end of the air extraction hood. The folding sealing assembly is composed of two groups of symmetrically arranged bidirectional screws, screw blocks, connecting rings, telescopic folding covers, transmission boxes, driving motors, driving wheels, belts, driven wheels and linkage rods;

[0007] The driving wheel and the driven wheel are respectively fixedly connected to one end of the two groups of bidirectional screws, and the other end of the bidirectional screw is rotatably connected to an extension plate of the air extraction hood;

[0008] The transmission box is fixed to one side wall of the air extraction hood by screws, the output shaft of the driving motor is fixedly connected to the driving wheel, and the driving wheel and the driven wheel are connected by the belt;

[0009] The screw block is in threaded connection with the bidirectional screw. One end of the telescopic folding cover is fixed to the bottom end of the air extraction hood by screws, the other end of the telescopic folding cover is connected to the connecting ring by screws, the linkage rod is hinged to both the screw block and the connecting ring, and the linkage rods are arranged in a cross shape and rotatably connected at the cross.

[0010] Preferably, the air duct is connected to the purification tank and the air extraction hood through flanges, and an air extractor is installed on the air duct through bolts.

[0011] Preferably, a liquid medicine pipe is reserved at the upper end of one side wall of the purification tank. A liquid distribution pipe is fixed in the middle of the purification tank. A plurality of atomizing nozzles are arrayed and installed on the outer side wall of the liquid distribution pipe, and a spiral blade is welded on the outer side wall of the liquid distribution pipe.

[0012] Preferably, a collection pipe is welded at the bottom end of the purification tank, and a demister is fixed at the top end in the purification tank.

[0013] The beneficial technical effects of the present utility model:

[0014] The present utility model designs a lifting and sealing mechanism composed of a driving motor, a driving wheel, a belt, a driven wheel, a bidirectional screw, a screw block, a linkage rod, a telescopic folding cover and a connecting ring. During the galvanizing process, the driving motor drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate through the belt, and both drive the bidirectional screw to rotate respectively, so that the screw block moves under the action of the thread. During the movement, the linkage rod rotates accordingly and stretches the telescopic folding cover through the connecting ring, so that the telescopic folding cover seals the gap between the galvanizing tank and the air extraction hood, which can effectively prevent the waste liquid from overflowing and ensure the treatment effect of the device and the air quality in the workshop. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a preferred embodiment of the galvanizing tank waste gas treatment device according to the present utility model;

[0016] Figure 2 It is a schematic structural diagram of the folding and sealing assembly in a preferred embodiment of the galvanizing tank waste gas treatment device according to the present utility model;

[0017] Figure 3 It is a main cross-sectional view of the transmission box in a preferred embodiment of the galvanizing tank waste gas treatment device according to the present utility model;

[0018] Figure 4 It is a main cross-sectional view of the purification tank in a preferred embodiment of the galvanizing tank waste gas treatment device according to the present utility model.

[0019] The description of the reference numerals is as follows:

[0020] 1. Purification tank; 2. Liquid medicine pipe; 3. Collection pipe; 4. Air guide pipe; 5. Exhaust fan; 6. Air extraction hood; 7. Folding seal assembly; 701. Linking rod; 702. Connecting ring; 703. Telescopic folding hood; 704. Bidirectional screw; 705. Screw block; 706. Transmission box; 707. Driving motor; 708. Driving wheel; 709. Belt; 710. Driven wheel; 8. Liquid separation pipe; 9. Spiral blade; 10. Atomizing nozzle; 11. Demister. Detailed implementation manners

[0021] To make the technical solutions of the present utility model clearer and more definite for those skilled in the art, the present utility model will be further described in detail below in conjunction with embodiments and the accompanying drawings. However, the implementation manners of the present utility model are not limited thereto.

[0022] As Figures 1-4 shown, the waste gas treatment device for galvanizing tanks provided in this embodiment includes a purification tank 1. One end of a side wall of the purification tank 1 is connected to an air guide pipe 4. One end of the air guide pipe 4 is connected to an air extraction hood 6. A folding seal assembly 7 is arranged at the bottom end of the air extraction hood 6. The folding seal assembly 7 is composed of two sets of symmetrically arranged bidirectional screws 704, screw blocks 705, connecting rings 702, telescopic folding hoods 703, transmission boxes 706, driving motors 707, driving wheels 708, belts 709, driven wheels 710 and linking rods 701;

[0023] The transmission box 706 is fixed on a side wall of the air extraction hood 6 by screws. The output shaft of the driving motor 707 is fixedly connected to the driving wheel 708. The driving wheel 708 is connected to the driven wheel 710 by a belt 709. The driving motor 707 drives the driving wheel 708 to rotate, and the driving wheel 708 drives the driven wheel 710 to rotate through the belt 709;

[0024] One end of each of the driving wheel 708 and the driven wheel 710 is fixedly connected to one end of two sets of bidirectional screws 704. The other end of the bidirectional screw 704 is rotatably connected to an extension plate of the air extraction hood 6. The driving wheel 708 and the driven wheel 710 can respectively drive the bidirectional screw 704 to rotate;

[0025] The screw block 705 is threadedly connected to the bidirectional screw 704. One end of the telescopic folding hood 703 is fixed to the bottom end of the air extraction hood 6 by screws. The other end of the telescopic folding hood 703 is connected to the connecting ring 702 by screws. The linking rod 701 is hinged to both the screw block 705 and the connecting ring 702. The linking rod 701 is arranged in a crossed manner and is rotatably connected at the crossing point. During the rotation of the bidirectional screw 704, the screw block 705 moves under the action of the thread. During the movement, the linking rod 701 rotates accordingly and stretches the telescopic folding hood 703 through the connecting ring 702, thereby sealing the gap between the galvanizing tank and the air extraction hood 6, effectively preventing the overflow of waste liquid, and ensuring the treatment effect of the device and the air quality in the workshop.

[0026] The air duct 4 is connected to the purification tank 1 and the air extraction hood 6 through flanges. An exhaust fan 5 is installed on the air duct 4 by bolts. The exhaust fan 5 extracts the waste gas generated during the galvanizing process through the air extraction hood 6.

[0027] At the upper end of one side wall of the purification tank 1, a liquid medicine pipe 2 is reserved. In the middle of the purification tank 1, a liquid distribution pipe 8 is fixed. A plurality of groups of atomizing nozzles 10 are arrayed and installed on the outer side wall of the liquid distribution pipe 8. A spiral blade 9 is welded on the outer side wall of the liquid distribution pipe 8. The extracted waste gas flows upward through the spiral blade 9. During the flowing process, the liquid medicine is sprayed out through the liquid medicine pipe 2 and the atomizing nozzles 10 on the liquid distribution pipe 8 to contact and react with the waste gas, thereby treating the waste gas.

[0028] A collection pipe 3 is welded to the bottom end of the purification tank 1. A demister 11 is fixed at the top end inside the purification tank 1. The treated liquid medicine is discharged and recycled through the collection pipe 3 by gravity. The treated waste gas is discharged after being dehumidified by the demister 11.

[0029] The working principle of this device: During use, the device is fixed on one side of the galvanizing tank and the liquid medicine pipe 2 is connected to an external liquid supply mechanism. The workpiece is placed in the galvanizing tank, and the galvanizing tank is heated to galvanize the workpiece. During the galvanizing process, the driving motor 707 drives the driving wheel 708 to rotate. The driving wheel 708 drives the driven wheel 710 to rotate through the belt 709. Both of them drive the bidirectional screw rod 704 to rotate respectively, so that the screw block 705 moves under the action of the thread. During the moving process, the linkage rod 701 rotates accordingly and stretches the telescopic folding cover 703 through the connecting ring 702, so that the telescopic folding cover 703 seals the gap between the galvanizing tank and the air extraction hood 6, which can effectively prevent the waste liquid from overflowing. Then, the exhaust fan 5 extracts the waste gas generated during the galvanizing process through the air extraction hood 6. The extracted waste gas flows upward through the spiral blade 9. During the flowing process, the liquid medicine is sprayed out through the liquid medicine pipe 2 and the atomizing nozzles 10 on the liquid distribution pipe 8 to contact and react with the waste gas, thereby treating the waste gas. The treated liquid medicine is discharged and recycled through the collection pipe 3 by gravity. The treated waste gas is discharged after being dehumidified by the demister 11.

[0030] The above is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, makes equivalent substitutions or changes, all belong to the protection scope of the present utility model.

Claims

1. Galvanizing pool waste gas treatment device, characterized by: The invention comprises a purification tank (1), wherein the bottom end of one side wall of the purification tank (1) is connected to an air guide pipe (4), one end of the air guide pipe (4) is connected to an exhaust hood (6), and the bottom end of the exhaust hood (6) is provided with a folding sealing assembly (7), wherein the folding sealing assembly (7) is composed of two groups of symmetrically arranged bidirectional screws (704), a screw block (705), a connecting ring (702), a telescopic folding hood (703), a transmission box (706), a driving motor (707), a driving wheel (708), a belt (709), a driven wheel (710) and a linkage rod (701); The transmission box (706) is fixed to a side wall of the exhaust hood (6) by means of screws, the output shaft of the driving motor (707) is fixedly connected to the driving wheel (708), and the driving wheel (708) is connected to the driven wheel (710) by means of the belt (709); The driving wheel (708) and the driven wheel (710) are respectively fixedly connected to one end of the two sets of bidirectional screw rods (704), and the other end of the bidirectional screw rods (704) is rotatably connected to the extension plate of the exhaust hood (6); The screw block (705) is connected to the bidirectional screw rod (704) by threads, one end of the telescopic folding cover (703) is fixed to the bottom end of the exhaust hood (6) by screws, and the other end of the telescopic folding cover (703) is connected to the connecting ring (702) by screws, and the linkage rod (701) is hinged to the screw block (705) and the connecting ring (702), and the linkage rod (701) is cross-arranged and rotatably connected at the intersection.

2. The galvanizing pool waste gas treatment device according to claim 1, characterized in that: The air guide pipe (4) is connected to the purification tank (1) and the exhaust hood (6) via flanges, and an exhaust fan (5) is installed on the air guide pipe (4) via bolts.

3. The galvanizing pool waste gas treatment device according to claim 2 is characterized in that: A liquid medicine pipe (2) is reserved at the upper end of one side wall of the purification tank (1), a liquid dispensing pipe (8) is fixed in the middle of the purification tank (1), a plurality of groups of atomizing nozzles (10) are installed in an array on the outer side wall of the liquid dispensing pipe (8), and a spiral blade (9) is welded on the outer side wall of the liquid dispensing pipe (8).

4. The galvanizing pool waste gas treatment device according to claim 3 is characterized in that: A collecting pipe (3) is welded to the bottom end of the purification tank (1), and a demister (11) is fixed to the top end of the purification tank (1).

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