CN209798057U - Hot galvanizing flue gas absorption device - Google Patents

Abstract

The utility model provides a hot-dip galvanized flue gas absorption device, which comprises a support frame, a collection cover, an operation window, a smoking channel and a fan. The support frame is installed on the periphery of the zinc pot, and is airtightly connected with the zinc pot; the collection cover is installed on the support frame in a sealed manner, and the collection cover is in the shape of a light bulb, and the operation window and the smoking channel are all arranged on the collection cover; The number is the same as the number of smoking passages, and the fans are installed on the smoking passages in a one-to-one correspondence. A zinc fume collection cover is used to avoid splashing of zinc liquid and play a protective role. The collection hood is in the shape of a light bulb. The narrower hood wall is conducive to the concentration of zinc fume to the top of the hood, and the larger dome-shaped hood is conducive to the accumulation of zinc fume, which is convenient for the concentrated absorption of the smoking channel on the top, and the smoke in the smoking channel The cold air is concentrated on the top of the hood to a large extent, which reduces the temperature reduction of the zinc liquid in the zinc pot by the fan.

Description

A hot-dip galvanized smoke absorption device

technical field

The utility model relates to the technical field of zinc fume treatment produced in hot-dip galvanizing production, in particular to a hot child smoke absorption device.

Background technique

Hot-dip galvanizing, also known as hot-dip galvanizing, is a method in which steel components are immersed in molten zinc to obtain a metal coating. In recent years, with the rapid development of high-voltage power transmission, transportation, and communication, the protection requirements for steel parts are getting higher and higher, and the demand for hot-dip galvanized products is also increasing. When the zinc pot is in normal operation, due to the rapid formation of an oxide layer on the surface, the amount of smoke generated is less. When the workpiece is immersed in and lifted out of the zinc pot, due to the agitation and the volatilization of the flux on the workpiece, the smoke will increase significantly. A lot of smoke is produced when the workpiece in the zinc pot is hot-dip galvanized. The principle of the generation is as follows: After the workpiece is pickled to remove rust, the workpiece is treated with the solvent ammonium chloride, and after drying, the appearance is completely covered by ammonium chloride. live. When the workpiece enters the galvanizing pot, due to the high temperature, the ammonium chloride is rapidly decomposed to produce ferric chloride, zinc chloride, zinc oxide, ammonium chloride and other salts and metal oxide fumes, of which ammonium chloride is the main one. , the particle size of these soot is extremely fine, in the range of 0.0l ~ 1μm.

The current treatment method for zinc fume produced in the hot-dip galvanizing production process is mainly to install a suction port on the side of the zinc pot (hereinafter referred to as side suction), and suck the zinc fume through the pipeline to the dust collector for dust removal treatment, and discharge up to the standard. It mainly has the following disadvantages:

1. The side suction method has a strong absorption effect on the zinc fume generated at the edge of the zinc pot. After dust removal by the dust collector, it can reach the standard discharge, but it is difficult to effectively absorb the zinc fume generated in the middle of the zinc pot, especially At present, the hot-dip galvanizing industry is pursuing output. When the width of the zinc pot is continuously widening, it is difficult to absorb the zinc fume in the middle of the zinc pot, the unorganized emission is serious, and it is difficult to meet the environmental protection standards.

2. The side suction method installs suction ports on both sides of the zinc pot. In order to ensure the absorption effect, a set of side suction needs to be equipped with two high-power fans to work at the same time, which makes the site and wastes electricity.

3. The side suction method is to install the suction port along the side of the zinc pot, which is too close to the surface of the zinc liquid. On the one hand, the suction speeds up the surface oxidation of the zinc liquid, and a large amount of zinc oxide is generated, resulting in waste of raw materials. On the other hand, the air is sucked away at the same time. A large amount of zinc pot heat causes heat loss and increases energy costs.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose a hot-dip galvanizing smoke absorption device.

In order to achieve the above object, the utility model adopts the following technical solutions:

A hot-dip galvanizing smoke absorption device, the smoke absorption device is used to absorb zinc fume generated when the zinc pot is heated, and the smoke absorption device includes a support frame, a collection cover, an operation window, a smoking channel and a fan;

The support frame is a detachable assembled structure, the support frame is installed on the periphery of the zinc pot and is at the same height as the top surface of the zinc pot, and the space between the support frame and the zinc pot is airtight connection; the collection cover is airtightly installed on the support frame, the collection cover is bulb-shaped, the collection cover includes a cover top and a cover wall, the cover top is connected above the cover wall, the The horizontal section diameter of the cover top is larger than the horizontal section diameter of the cover wall; the operation window is installed on the cover wall by sliding up and down or left and right, and when the operation window is closed, the operation window and the collecting The hoods are airtightly connected; the number of the smoking passages is at least 2 and distributed on the top of the hood; the number of the fans is the same as the number of the smoking passages, and the fans are installed one by one on the On the smoking aisle.

Preferably, the collection cover is an integrally formed structure.

Preferably, the hood top and the hood wall are detachable structures, the hood top and the hood wall are wedged with the fastener through a slot, and the connection between the hood top and the hood wall Coated with sealant or installed with a sealing ring for sealing.

Preferably, the operation window is an electronically controlled operation window.

Preferably, the height range of the operation window is 1.65-1.75 meters.

Preferably, the distance between the bottom of the operation window and the support frame is no more than 15 cm.

Preferably, the smoking channel is a flexible pipe airtightly connected to the hood.

Preferably, the smoking channel is detachably installed on the outside of the hood.

Preferably, the fan is a variable frequency fan with adjustable wind speed.

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

Abandoning the traditional open-air side suction method, adopting a zinc fume collection cover, which reduces the personal injury and zinc waste caused by the splash of zinc liquid generated during the galvanizing process, and plays a protective role. The zinc fume collection hood is fully enclosed on the zinc pot. The zinc fume generated during the production process rises rapidly and is absorbed by multiple smoking channels on the top of the collection hood, greatly improving the smoke absorption efficiency. In addition, the collection hood is bulb-shaped, and the narrower hood wall is conducive to the concentration of zinc fumes to the top of the hood. The larger dome-shaped hood is conducive to the accumulation of zinc fumes, which is convenient for the concentrated absorption of the smoking channel at the top, and the smoking channel The cold air in the tank is concentrated on the top of the hood to a large extent, which reduces the temperature reduction of the zinc liquid in the zinc pot by the fan.

Description of drawings

Figure 1 is a schematic diagram of a hot-dip galvanizing smoke absorption device.

Among them, 1-support frame, 2-collecting hood, 21-hood top, 22-hood wall, 3-operation window, 4-smoking channel, 5-fan.

Detailed ways

In order to have a further understanding of the purpose, structure, features, and functions of the present utility model, the detailed description is as follows in conjunction with the embodiments.

Please refer to Fig. 1, the utility model provides a hot-dip galvanizing flue gas absorption device, the flue gas absorption device is used to absorb the zinc fumes produced when the zinc pot is heated, the flue gas absorption device includes a support frame 1, a collection cover 2, Operation window 3, smoking channel 4 and blower fan 5.

The support frame 1 is a detachable assembled structure. The support frame 1 is installed around the zinc pot and is at the same height as the top surface of the zinc pot. The support frame 1 and the zinc pot are airtightly connected; the zinc pot is generally fixed on the concrete In Taichung or semi-underground pits, the height of the support frame 1 can be adjusted according to the actual situation. The support frame 1 surrounds the zinc pot, and the collection cover 2 is installed on the support frame 1 airtightly. Inside, it plays a protective role to prevent personal injury and zinc waste caused by the splash of zinc liquid generated during the galvanizing process. Collection cover 2 is bulb-shaped, and collection cover 2 comprises cover top 21 and cover wall 22, and cover top 21 is connected on the top of cover wall 22, and the horizontal section diameter of cover top 21 is greater than the horizontal section diameter of cover wall 22; When in use, The zinc liquid in the zinc pot is heated to produce zinc gas that volatilizes upwards. The narrower cover wall 22 can confine the zinc gas within a certain range and send it to the cover top 21 in a concentrated manner. The cover top 21 is dome-shaped and has a volume It is more open than the cover wall 22, which is convenient for buffering zinc gas, and can confine the cold air of the fan 5 to the cover top 21, which will not have a great impact on the temperature below. Oxidation generates a large amount of zinc oxide, which causes waste of raw materials. On the other hand, it does not absorb a large amount of heat from the zinc pot at the same time, causing heat loss and increasing energy costs. The operation window 3 is installed on the cover wall 22 by sliding up and down or left and right. When the zinc gas is absorbed, the operation window 3 is closed; when the zinc gas absorption is finished, the operation window 3 is opened, which is convenient for workers to operate. When the operation window 3 is closed, the airtight connection between the operation window 3 and the collection cover 2 prevents zinc gas from leaking from the operation window 3 when zinc gas is absorbed. The quantity of smoking channel 4 is at least 2 and is distributed on the cover top 21; Absorb all the zinc gas, avoiding the embarrassment that the traditional side suction type cannot absorb the middle zinc gas because of the large area of the zinc pot.

In one embodiment, the collecting cover 2 is integrally formed, and the sealing effect is good. In another embodiment, the cover top 21 and the cover wall 22 are detachable structures, and the slot between the cover top 21 and the cover wall 22 is wedged with the fastener, and the connection between the cover top 21 and the cover wall 22 is painted with Sealant or sealing ring is installed for sealing; it can be divided into two steps during installation, which is more convenient, and it can also be divided into two parts for cleaning during cleaning. Since the collection cover 2 is bulb-shaped, the cover top 21 and the cover wall 22 It is more convenient to wash separately.

Preferably, the operation window 3 is an electronically controlled operation window 3, and the operation window 3 can be powered by a cylinder, a hydraulic cylinder, or a motor, and is connected to the control terminal through a circuit or a wireless signal, so as to achieve a better sealing effect.

Preferably, the height range of the operation window 3 is 1.65-1.75 meters, which is convenient for workers to operate.

Preferably, the distance between the bottom of the operation window 3 and the support frame 1 is no more than 15 centimeters, which can keep a certain distance between the operation window 3 and the support frame 1 to prevent problems with the switch of the operation window 3 without affecting Workers enter and exit operations.

Preferably, the smoking channel 4 is a hose airtightly connected to the hood 21, that is, the direction of the smoking channel 4 can be changed at will, that is, the wind direction in the smoking channel 4 can be adjusted at any time.

Preferably, the smoking channel 4 is detachably mounted on the outside of the hood top 21, and does not protrude into the collection hood 2, so as not to hinder the absorption of zinc gas.

Preferably, the fan 5 is a variable frequency fan 5 with adjustable wind speed, which can change the wind speed for extracting zinc gas.

From the above, the utility model abandons the traditional open-air side suction method and adopts a zinc fume collection cover, which reduces the personal injury and zinc waste caused by the splash of zinc liquid generated during the galvanizing process, and plays a protective role. The zinc fume collection hood is fully enclosed on the zinc pot. The zinc fume generated during the production process rises rapidly and is absorbed by multiple smoking channels on the top of the collection hood, greatly improving the smoke absorption efficiency. In addition, the collection hood is bulb-shaped, and the narrower hood wall is conducive to the concentration of zinc fumes to the top of the hood. The larger dome-shaped hood is conducive to the accumulation of zinc fumes, which is convenient for the concentrated absorption of the smoking channel at the top, and the smoking channel The cold air in the tank is concentrated on the top of the hood to a large extent, which reduces the temperature reduction of the zinc liquid in the zinc pot by the fan.

The utility model has been described by the above-mentioned relevant embodiments, but the above-mentioned embodiments are only examples for implementing the utility model. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the utility model all belong to the patent protection scope of the utility model.

Claims (9)

1. A hot-dip galvanizing flue gas absorbing device, said flue gas absorbing device is used to absorb the zinc smoke produced when the zinc pot is heated, it is characterized in that: said flue gas absorbing device comprises support frame, collection cover, operating window, Smoking channels and fans; The support frame is a detachable assembled structure, the support frame is installed on the periphery of the zinc pot and is at the same height as the top surface of the zinc pot, and the space between the support frame and the zinc pot is airtight connection; the collection cover is airtightly installed on the support frame, the collection cover is bulb-shaped, the collection cover includes a cover top and a cover wall, the cover top is connected above the cover wall, the The horizontal section diameter of the cover top is larger than the horizontal section diameter of the cover wall; the operation window is installed on the cover wall by sliding up and down or left and right, and when the operation window is closed, the operation window and the collecting The hoods are airtightly connected; the number of the smoking passages is at least 2 and distributed on the top of the hood; the number of the fans is the same as the number of the smoking passages, and the fans are installed one by one on the On the smoking aisle. 2. The hot-dip galvanized fume absorption device according to claim 1, characterized in that: the collection cover is integrally formed. 3. The hot-dip galvanized fume absorbing device according to claim 1, characterized in that: the cover top and the cover wall are detachable structures, and the cover top and the cover wall are connected with each other through a card slot. The clips are wedged together, and the joint between the cover top and the cover wall is coated with sealant or installed with a sealing ring for sealing. 4. The hot-dip galvanizing fume absorption device according to claim 1, characterized in that: the operation window is an electronically controlled operation window. 5. The hot-dip galvanizing fume absorption device according to claim 1, characterized in that: the height range of the operation window is 1.65-1.75 meters. 6. The hot-dip galvanizing fume absorption device according to claim 1, characterized in that: the distance between the bottom of the operation window and the support frame is no more than 15 cm. 7. The hot-dip galvanizing fume absorbing device according to claim 1, characterized in that: the smoking channel is a hose that is airtightly connected to the hood. 8. The hot-dip galvanizing fume absorbing device according to claim 7, characterized in that: the smoking channel is detachably installed on the outside of the hood. 9. The hot-dip galvanizing fume absorption device according to claim 1, characterized in that: the fan is a variable frequency fan with adjustable wind speed.