A curtain-type fume treatment and purification system for hot-dip galvanizing and its purification method

Abstract

This application provides a curtain-type fume treatment and purification system and method for hot-dip galvanizing, relating to the field of fume treatment technology. It includes a curtain assembly and a purification assembly. The curtain assembly includes a support, a curtain, a drawstring, and a tightening unit. A slide rail is formed around the central axis of the reaction tank on the support. The top of the curtain is positioned on the slide rail and can slide along it. One end of the curtain can connect to the other end along the slide rail, forming a ring around the reaction tank. The top notch of the ring serves as an air outlet. A rope-through hole is provided on the outer side of the curtain. One end of the drawstring is connected to the tightening unit, and the other end passes through the rope-through hole along the circumference of the reaction tank and is detachably connected to the tightening unit. The tightening unit can apply a force away from the reaction tank to the drawstring. The purification assembly includes an extraction hood, which is located at the air outlet and can block it. The purification assembly can extract and purify the fume below the extraction hood. This application exhibits good fume collection efficiency.

Description

Technical Field

[0001] This application relates to the field of fume treatment technology, and in particular to a curtain-type fume treatment and purification system and method for hot-dip galvanizing. Background Technology

[0002] During the hot-dip galvanizing process, the immersion of workpieces in molten zinc generates a large amount of high-temperature, complex mixed fumes, mainly containing zinc dust, zinc oxide particles, volatile organic compounds, and acidic gases. If these fumes are not effectively treated, they will not only deteriorate the working environment and cause environmental pollution, but also lead to a waste of zinc resources.

[0003] Currently, to capture smoke and dust at the source, some existing technologies employ curtain-type collection devices arranged around the galvanizing tank. These devices confine the smoke and dust above the tank opening by forming a gas-liquid mixing curtain, which then guides it into the purification system. However, because the hot-dip galvanizing tank undergoes significant thermal expansion and contraction during operation, a certain expansion gap must be reserved between the curtain device and the tank wall structure to prevent interference or damage. The existence of these gaps prevents the collection area from being completely sealed, causing some smoke and dust to escape during negative pressure suction, resulting in poor overall purification of the smoke and dust.

[0004] In view of this, there is a need to provide a curtain-type fume treatment and purification system for hot-dip galvanizing and its purification method. Summary of the Invention

[0005] To address the problem that existing curtain-type fume treatment and purification systems for hot-dip galvanizing require a gap between the curtain device and the pool wall structure, resulting in poor overall fume purification, this application provides a curtain-type fume treatment and purification system for hot-dip galvanizing and its purification method.

[0006] In a first aspect, this application provides a curtain-type fume treatment and purification system for hot-dip galvanizing, which adopts the following technical solution: it includes a curtain assembly and a purification assembly. The curtain assembly includes a support, a curtain, a drawstring, and a tightening unit. A slide rail is formed around the central axis of the reaction tank on the support. The top of the curtain is located on the slide rail and can slide along the slide rail. One end of the curtain can be connected to the other end of the curtain along the slide rail, so that the curtain forms a ring around the reaction tank. The top notch of the ring is formed as an air outlet. A rope-passing hole is opened on the outer side of the curtain along its own length direction. One end of the drawstring is connected to the tightening unit. The other end of the drawstring passes through the rope-passing hole along the circumference of the reaction tank and is detachably connected to the tightening unit. The tightening unit can apply a force away from the reaction tank to the drawstring and abut the curtain against the outer wall of the reaction tank through the drawstring. The purification component includes an exhaust hood, which is located at the air outlet and can block the air outlet. The purification component can draw in the smoke and dust inside the curtain through the exhaust hood and purify the smoke and dust drawn in by the exhaust hood.

[0007] By adopting the above technical solution, the curtain can slide along the guide rail and form a barrier around the reaction tank. The tightening unit, together with the drawstring, can press the curtain against the outer wall of the reaction tank, making the barrier fit more tightly against the edge of the reaction tank, effectively preventing smoke and dust from escaping through the gaps. The purification component sucks in and purifies the smoke and dust inside the barrier through the exhaust hood, improving the collection and purification effect of smoke and dust. Compared with the curtain-type collection device arranged around the galvanizing tank in the existing technology, this system does not require an expansion gap between the curtain and the tank wall, solving the problem of some smoke and dust escaping and poor purification effect caused by the existence of gaps. Compared with the traditional open exhaust hood or side-suction gas collection device, it avoids the situation of smoke and dust spreading and escaping in all directions, greatly improving the collection efficiency of smoke and dust.

[0008] Specifically, the top of the curtain is provided with multiple hooks spaced apart along its length, and the slide rail is a ring-shaped rod. Each hook is attached to the ring-shaped rod and can slide along the ring-shaped rod.

[0009] By adopting the above technical solution, multiple hooks spaced at intervals along the length of the top of the curtain are attached to the slide rail of the ring rod and can slide along it, which allows the curtain to move more flexibly around the reaction tank. This makes it easier for one end of the curtain to connect with the other end along the slide rail to form a barrier, improving the convenience and flexibility of curtain operation, and also helping to better confine smoke and dust within the barrier.

[0010] Specifically, the tightening unit includes a rope-winding post, a constant force component, a telescopic rod, a fixed cylinder, and an elastic component. The rope-winding post is vertically positioned on one side of the reaction tank. Both ends of the draw rope pass around the rope-winding post and are connected to the constant force component. The constant force component can apply a constant force away from the reaction tank to the draw rope. One end of the telescopic rod is connected to the rope-winding post, and the other end of the telescopic rod is inserted into the fixed cylinder and can slide in a direction from approaching to moving away from the reaction tank. The elastic component is located between the inner wall of the telescopic rod and the fixed cylinder and can apply a force close to the reaction tank to the telescopic rod, so that the rope-winding post abuts the curtain between the rope-winding post and the outer wall of the reaction tank.

[0011] By adopting the above technical solution, the constant force component applies a constant force away from the reaction tank to the draw rope, while the elastic component applies a force close to the reaction tank to the telescopic rod. This causes the rope column to abut the curtain against the outer wall of the reaction tank, ensuring a tight fit between the curtain and the outer wall of the reaction tank, reducing the escape of smoke and dust from the gap between the curtain and the reaction tank, and improving the smoke and dust collection efficiency. Furthermore, when the reaction tank expands and contracts due to heat, the telescopic rod can slide in the direction from close to to far away from the reaction tank, adapting to changes in the size of the reaction tank and continuously maintaining a good seal between the curtain and the outer wall of the reaction tank, further ensuring the smoke and dust collection effect.

[0012] Furthermore, the constant force component includes a mounting box, a slider, a limiting rod, a main compression spring, a lever, and a dividing compression spring. The limiting rod is disposed within the mounting box along the length of the telescopic rod. The slider has a sliding hole and is slidably connected to the limiting rod by being sleeved on the limiting rod through the sliding hole. The main compression spring is disposed between the side of the slider near the reaction tank and the inner wall of the mounting box. The two ends of the drawstring pass through through holes in the outer wall of the mounting box and are connected to the slider. The lever is disposed between the slider and the dividing compression spring, and one end of the lever away from the reaction tank is hinged to the inner wall of the mounting box. The other end of the lever is inclined towards the limiting rod. The dividing compression spring is connected to the lever and can apply a force close to the limiting rod to the lever. The slider abuts against the side of the lever away from the dividing compression spring and can slide along the lever. When the slider moves closer to the reaction tank along the limiting rod, the main compression spring contracts and the lever arm between the slider and the lever hinge increases; when the slider moves away from the reaction tank along the limiting rod, the main compression spring extends and the lever arm between the slider and the lever hinge decreases.

[0013] By adopting the above technical solution, the slider in the constant force component slides on the limiting rod. Combined with the structural design of the main compression spring, lever, and dividing spring, the extension and retraction state of the main compression spring and the lever arm between the slider and the lever hinge point can be changed as the slider moves closer to or further away from the reaction tank along the limiting rod. When the slider approaches the reaction tank, the main compression spring contracts and the lever arm increases, allowing the tightening unit to apply a stable and appropriate force away from the reaction tank to the drawstring. This ensures that the drawstring can tightly press the curtain against the outer wall of the reaction tank, reducing the escape of smoke and dust from the gap between the curtain and the reaction tank. When the slider moves away from the reaction tank, the main compression spring extends and the lever arm decreases, ensuring the curtain's fit against the outer wall of the reaction tank, improving smoke and dust collection efficiency, and thus enhancing the overall purification effect of the curtain-type smoke and dust treatment system for hot-dip galvanizing.

[0014] Furthermore, both ends of the drawstring are detachably connected to the slider.

[0015] By adopting the above technical solution, the two ends of the draw rope are detachably connected to the slider, which makes it convenient to remove the draw rope when opening the curtain, so as to open one side of the curtain to form an opening for loading or unloading workpieces into the reaction tank; when closing the curtain, the draw rope can be reconnected to the slider, so that the constant force component can automatically tighten the curtain through the draw rope and continuously press it against the outer wall of the reaction tank, ensuring the dust collection effect, and also facilitating the installation, maintenance and repair of the system.

[0016] Furthermore, the slider has two slots, and each end of the draw rope is connected to a plug. The plugs correspond one-to-one with the slots, and each plug can be inserted into the corresponding slot and abut against the side wall of the slot facing away from the reaction tank.

[0017] By adopting the above technical solution, the plugs connected to both ends of the draw rope are inserted into the slots on the slider in a one-to-one correspondence, and the plugs can abut against the side wall of the slot facing away from the reaction pool, realizing the detachable connection between the draw rope and the slider. This facilitates the disassembly and assembly of the draw rope during the opening and closing of the curtain, making it convenient to load or remove workpieces into the reaction pool and restore the closed enclosure state of the curtain.

[0018] Furthermore, the constant force component also includes a limiting bolt and an adjusting nut. The screw end of the limiting bolt passes through a through hole opened on the slider along the length direction of the limiting rod and is connected to the inner wall of the mounting box. The screw head end of the limiting bolt can abut against the side of the slider near the reaction tank. The adjusting nut is screwed onto the limiting bolt, and the adjusting nut can abut against the side of the slider away from the reaction tank.

[0019] By adopting the above technical solution, the limiting bolt and adjusting bolt can limit the sliding range of the slider. The screw head of the limiting bolt abuts against the side of the slider closest to the reaction tank, preventing the slider from getting too close to the reaction tank. The adjusting bolt is screwed onto the limiting bolt and abuts against the side of the slider away from the reaction tank, allowing adjustment of the maximum position of the slider away from the reaction tank according to actual needs. This, in turn, adjusts the force applied to the curtain by the constant force component through the drawstring, ensuring that the curtain can better abut against the outer wall of the reaction tank and guaranteeing the dust collection effect.

[0020] Specifically, the purification assembly also includes a purification tower and an exhaust fan. The air inlet of the purification tower is connected to the air outlet of the exhaust hood via a pipe, and the air outlet of the purification tower is connected to the exhaust fan via a pipe.

[0021] By adopting the above technical solution, the purification tower and the exhaust fan are connected to the exhaust hood through pipes. The exhaust fan can provide power to allow the smoke and dust to enter the purification tower through the exhaust hood. The purification tower is used to purify the smoke and dust, thereby achieving effective purification of the smoke and dust released from the hot-dip galvanizing reaction tank.

[0022] Specifically, the bottom of the bracket is equipped with casters.

[0023] By adopting the above technical solution and installing casters at the bottom of the support, the curtain-type fume treatment and purification system for hot-dip galvanizing can be easily moved. The system's placement can be flexibly adjusted according to the location of different reaction tanks, improving the system's flexibility and applicability.

[0024] The second aspect of this application provides a hot-dip galvanizing purification method, which adopts the following technical solution: Opening process: First, adjust the adjusting nut so that it abuts against the side of the slider away from the reaction tank. Then, remove the end of the draw rope that is detachably connected to the slider. Then, pull open one side of the curtain along the slide rail to form an opening, through which workpieces can be loaded or removed into the reaction tank. Sealing process: After the workpiece operation is completed, first restore the opened curtain to the closed enclosure state, then reconnect the detached end of the draw rope to the slider after passing it around the rope winding post, and finally adjust the adjusting nut to move it away from the slider so that the constant force component can automatically tighten the curtain through the draw rope and continuously press it against the outer wall of the reaction tank. Then, start the purification component to suck up and purify the smoke and dust.

[0025] By adopting the above technical solution, during the opening process, the adjusting bolt is adjusted to abut against the side of the slider away from the reaction tank. Then, the end of the draw rope that is detachably connected to the slider is removed, and the curtain is pulled open along the slide rail to form an opening, making it convenient to load or remove workpieces into the reaction tank. During the closing process, the opened curtain is restored to the closed enclosure state, the draw rope is reconnected, and the adjusting bolt is adjusted to abut against the slider. The constant force component can automatically tighten the curtain through the draw rope and continuously press it against the outer wall of the reaction tank, which can effectively prevent smoke and dust from escaping. At the same time, the purification component can be activated to suck and purify the smoke and dust, improving the efficiency of smoke and dust treatment and purification. It is also easy to operate and facilitates the operation of workpieces in the reaction tank.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The curtain can form a ring around the reaction tank. The tightening unit can use a draw rope to hold the curtain against the outer wall of the reaction tank, reducing gaps, preventing smoke and dust from spreading and escaping, and improving the efficiency of smoke and dust collection. 2. The purification unit can draw in the smoke and dust inside the curtain through the exhaust hood and purify it. It can treat multiple pollutants at the same time, solving the problem that exhaust emissions from a single purification process are prone to exceed the standards. 3. The setup of the tightening unit and curtain eliminates the need to increase the negative pressure of the fan to improve the capture rate, thus reducing energy consumption. Attached Figure Description

[0027] Figure 1This is a perspective view of a curtain-type fume treatment and purification system for hot-dip galvanizing according to this application; Figure 2 This is a top view of a curtain-type fume treatment and purification system for hot-dip galvanizing according to this application; Figure 3 yes Figure 2 A schematic enlarged view of region A, showing the tightening unit; Figure 4 It is along Figure 2 A schematic cross-sectional view taken along the BB direction.

[0028] Reference numerals: 1. Curtain assembly; 11. Bracket; 111. Slide rail; 112. Moving wheel; 12. Curtain; 121. Hook; 13. Drawstring; 131. Insert block; 14. Tightening unit; 141. Rope winding post; 142. Constant force component; 1421. Mounting box; 1422. Slider; 1423. Limiting rod; 1424. Main compression spring; 1425. Lever; 1426. Sub-compression spring; 1427. Limiting bolt; 1428. Adjusting nut; 143. Telescopic rod; 144. Fixing cylinder; 145. Elastic component; 2. Purification assembly; 21. Exhaust hood; 22. Purification tower; 23. Exhaust fan; 3. Reaction tank. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-4 Further explanation: See Figure 1 and Figure 4 A curtain-type fume treatment and purification system for hot-dip galvanizing includes a curtain assembly 1 and a purification assembly 2. The curtain assembly 1 includes a support 11, a curtain 12, drawstrings 13, and a tightening unit 14. The bottom of the support 11 is equipped with casters 112 to facilitate easy repositioning of the hot-dip galvanizing curtain-type fume treatment and purification system. A slide rail 111 is formed around the central axis of the reaction tank 3 on the support 11. The top of the curtain 12 is provided with multiple hooks 121 spaced apart along its length. The slide rail 111 is a ring-shaped rod, and each hook 121 is hooked onto the ring-shaped rod and can slide along the ring-shaped rod. The end can be connected to the other end of the curtain 12 along the slide rail 111, and the curtain 12 forms a ring around the reaction tank 3. The top notch of the ring forms an air outlet. The purification component 2 includes an exhaust hood 21, a purification tower 22 and an exhaust fan 23. The exhaust hood 21 is located at the air outlet and can block the air outlet. The air inlet of the purification tower 22 is connected to the air outlet of the exhaust hood 21 through a pipe. The air outlet of the purification tower 22 is connected to the exhaust fan 23 through a pipe, so that the smoke and dust will be sucked into the purification tower 22 by the exhaust hood. The purification tower 22 is used to purify the smoke and dust, thereby achieving effective purification of the smoke and dust released in the hot-dip galvanizing reaction tank 3.

[0030] See Figure 2, Figure 3 and Figure 4 The curtain 12 has a rope-passing hole on its outer side along its length. The tightening unit 14 includes a rope-winding post 141, a constant force member 142, a telescopic rod 143, a fixed cylinder 144, an elastic member 145, a limiting bolt 1427, and an adjusting nut 1428. The rope-winding post 141 is vertically positioned on one side of the reaction tank 3. Both ends of the draw rope 13 pass around the rope-winding post 141 and are connected to the constant force member 142. One end of the telescopic rod 143 is connected to the rope-winding post 141, and the other end of the telescopic rod 143 is inserted into the fixed cylinder 144 and can slide from near to far from the reaction tank 3. The elastic member 145 is located between the inner wall of the telescopic rod 143 and the fixed cylinder 144. A force can be applied to the telescopic rod 143 near the reaction tank 3, so that the rope post 141 abuts the curtain 12 between the rope post 141 and the outer wall of the reaction tank 3; the constant force component 142 includes a mounting box 1421, a slider 1422, a limiting rod 1423, a main compression spring 1424, a lever 1425, and a dividing compression spring 1426. The limiting rod 1423 is disposed in the mounting box 1421 along the length direction of the telescopic rod 143. The slider 1422 has a sliding hole, and the slider 1422 is slidably connected to the limiting rod 1423 by being sleeved on the limiting rod 1423 through the sliding hole. The main compression spring 1424 is disposed on the side of the slider 1422 near the reaction tank 3 and is connected to the mounting box 1426. Between the inner walls of the box 1421; two slots are provided on the slider 1422, and both ends of the drawstring 13 are connected to the inserts 131, each insert 131 corresponding to a slot. Each insert 131 can be inserted into the corresponding slot and abuts against the side wall of the slot facing away from the reaction tank 3. The two ends of the drawstring 13 can pass through the through holes provided on the outer wall of the mounting box 1421 and connect to the corresponding inserts 131. The lever 1425 is located between the slider 1422 and the pressure spring 1426, and one end of the lever 1425 away from the reaction tank 3 is hinged to the inner wall of the mounting box 1421. The other end of the lever 1425 is inclined towards the limiting rod 1423. 1426 is connected to lever 1425 and can apply a force close to limit rod 1423 to lever 1425. Slider 1422 abuts against the side of lever 1425 away from pressure spring 1426 and can slide along lever 1425. The screw end of limit bolt 1427 passes through the through hole opened on slider 1422 along the length direction of limit rod 1423 and is connected to the inner wall of mounting box 1421. The screw head end of limit bolt 1427 can abut against the side of slider 1422 close to reaction tank 3. Adjusting nut 1428 is screwed on limit bolt 1427 and can abut against the side of slider 1422 away from reaction tank 3.

[0031] With the above configuration, it can be understood that when the slider 1422 approaches the reaction tank 3 along the limiting rod 1423, the main compression spring 1424 contracts, and the lever arm between the slider 1422 and the lever 1425 hinge increases; when the slider 1422 moves away from the reaction tank 3 along the limiting rod 1423, the main compression spring 1424 extends, and the lever arm between the slider 1422 and the lever 1425 hinge decreases. Therefore, the tightening unit 14 can apply a stable and appropriate force away from the reaction tank 3 to the drawstring 13, thereby ensuring that the drawstring 13 can tightly abut the curtain 12 against the outer wall of the reaction tank 3, reducing the gap between the curtain 12 and the reaction tank 3. Escape; Of course, the aforementioned constant force does not mean that the tension applied by the constant force component 142 to the draw rope 13 is always constant, because the elastic force output by the pressure dividing spring 1426 to the lever 1425 will change slightly with the movement of the slider 1422. Therefore, the tension applied by the constant force component 142 to the draw rope 13 varies within a certain range. In actual use, because the volume change caused by the thermal expansion and contraction of the reaction tank 3 itself is not large, the tension applied by the constant force component 142 to the draw rope 13 can be regarded as a constant force within a certain range, and the change of the tension applied by the constant force component 142 to the draw rope 13 within this range will not affect the realization of the technical effect of the present invention.

[0032] Specifically, two adjacent hooks 121 can be connected to form a whole by a soft material such as a plastic film, so that when the curtain 12 forms a barrier, the soft material can seal the gap between the hooks 121; and when the curtain 12 is opened, the soft material will not obstruct the sliding of the hooks 121.

[0033] Based on the structure of the above-mentioned curtain-type fume treatment and purification system for hot-dip galvanizing, the second aspect of this application also provides a hot-dip galvanizing purification method, which utilizes the above-mentioned curtain-type fume treatment and purification system for hot-dip galvanizing. The method specifically includes: Opening process: First, adjust the adjusting nut 1428 so that it abuts against the side of the slider 1422 away from the reaction tank 3. Then, remove the end of the draw rope 13 that is detachably connected to the slider 1422. Then, pull the curtain 12 along the slide rail 111 to form an opening. Workpieces can then be loaded or removed into the reaction tank 3 through this opening. Sealing process: After the workpiece operation is completed, first restore the opened curtain 12 to the closed enclosure state, then pass the removed end of the draw rope 13 around the rope winding post 141 and reconnect it to the slider 1422. Finally, adjust the adjusting nut 1428 to move it away from the slider 1422 so that the constant force component 142 can automatically tighten the curtain 12 through the draw rope 13 and continuously press it against the outer wall of the reaction tank 3. Then, start the purification component 2 to suck up and purify the smoke and dust.

[0034] Since the hot-dip galvanizing purification method of this application is implemented using the above-mentioned curtain-type fume treatment and purification system for hot-dip galvanizing, it can also have all the technical effects of the above-mentioned curtain-type fume treatment and purification system for hot-dip galvanizing. In particular, during the opening process, the adjusting bolt is adjusted to abut against the side of the slider 1422 away from the reaction tank 3, and then the end of the draw rope 13 that is detachably connected to the slider 1422 is removed. The curtain 12 is pulled open along the slide rail 111 to form an opening, which facilitates the insertion or removal of workpieces into the reaction tank 3. During the closing process, the opened curtain 12 is restored to the closed enclosure state, the draw rope 13 is reconnected and the adjusting bolt is adjusted to abut against the slider 1422. The constant force component 142 can automatically tighten the curtain 12 through the draw rope 13 and continuously press it against the outer wall of the reaction tank 3, which can effectively prevent the fume from escaping. At the same time, the purification component 2 can be activated to suck and purify the fume, which improves the fume treatment and purification efficiency and is easy to operate, making it convenient to operate the workpieces in the reaction tank 3.

[0035] The implementation principle of the curtain-type fume treatment and purification system for hot-dip galvanizing described in this application is as follows: The curtain 12 can slide along the slide rail 111 and form a barrier around the reaction tank 3. The tightening unit 14, together with the drawstring 13, can press the curtain 12 against the outer wall of the reaction tank 3, making the barrier fit more tightly against the edge of the reaction tank 3, effectively preventing smoke and dust from escaping through the gaps. The purification component 2 sucks in and purifies the smoke and dust inside the barrier through the exhaust hood 21, improving the collection and purification effect of the smoke and dust. Compared with the curtain 12-type collection device arranged around the galvanizing tank in the prior art, this system does not require an expansion gap to be reserved between the curtain 12 and the tank wall, solving the problem of some smoke and dust escaping and poor purification effect due to the existence of gaps. Compared with the traditional open exhaust hood or side-suction gas collection device, it avoids the situation of smoke and dust spreading and escaping to all sides, greatly improving the collection efficiency of smoke and dust.

[0036] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A curtain-type fume treatment and purification system for hot-dip galvanizing, used to purify the fume released from the reaction tank (3), characterized in that: The system includes a curtain assembly (1) and a purification assembly (2). The curtain assembly (1) includes a bracket (11), a curtain (12), a drawstring (13), and a tightening unit (14). A slide rail (111) is formed around the central axis of the reaction tank (3) on the bracket (11). The top of the curtain (12) is located on the slide rail (111) and can slide along the slide rail (111). One end of the curtain (12) can be connected to the other end of the curtain (12) along the slide rail (111), so that the curtain (12) forms a ring around the reaction tank (3). A ring of enclosure with a notch at the top forming an air vent. The curtain (12) has a rope through hole along its length on the outer side. One end of the draw rope (13) is connected to the tightening unit (14), and the other end of the draw rope (13) passes through the rope through hole along the circumference of the reaction tank (3) and is detachably connected to the tightening unit (14). The tightening unit (14) can apply a force away from the reaction tank (3) to the draw rope (13) and abut the curtain (12) against the outer wall of the reaction tank (3) via the draw rope (13). The purification component (2) includes an exhaust hood (21), which is located at the air outlet and can block the air outlet. The purification component (2) can draw in the smoke and dust inside the curtain (12) through the exhaust hood (21) and purify the smoke and dust drawn in by the exhaust hood (21).

2. The curtain-type fume treatment and purification system for hot-dip galvanizing according to claim 1, characterized in that: The top of the curtain (12) is provided with a plurality of hooks (121) spaced apart along its length. The slide rail (111) is a ring-shaped rod. Each hook (121) is attached to the ring-shaped rod and can slide along the ring-shaped rod.

3. The curtain-type fume treatment and purification system for hot-dip galvanizing according to claim 1, characterized in that: The tightening unit (14) includes a rope winding post (141), a constant force component (142), a telescopic rod (143), a fixed cylinder (144), and an elastic component (145). The rope winding post (141) is vertically positioned on one side of the reaction tank (3). Both ends of the draw rope (13) pass around the rope winding post (141) and are connected to the constant force component (142). The constant force component (142) can apply a constant force away from the reaction tank (3) to the draw rope (13). One end of the telescopic rod (143) is connected to the fixed cylinder (144). The cord is connected to the cord post (141), and the other end of the telescopic rod (143) is inserted into the fixed cylinder (144) and can slide in a direction from approaching to moving away from the reaction tank (3). The elastic element (145) is provided between the inner wall of the telescopic rod (143) and the fixed cylinder (144) and can apply a force to the telescopic rod (143) close to the reaction tank (3) so that the cord post (141) abuts the curtain (12) between the cord post (141) and the outer wall of the reaction tank (3).

4. The curtain-type fume treatment and purification system for hot-dip galvanizing according to claim 3, characterized in that: The constant force component (142) includes a mounting box (1421), a slider (1422), a limiting rod (1423), a main compression spring (1424), a lever (1425), and a dividing compression spring (1426). The limiting rod (1423) is located inside the mounting box (1421) along the length of the telescopic rod (143). The slider (1422) has a sliding hole, and the slider (1422) is slidably connected to the limiting rod (1423) by being sleeved on the limiting rod (1423) through the sliding hole. The main compression spring (1424) is located between the side of the slider (1422) near the reaction tank (3) and the inner wall of the mounting box (1421). The two ends of the drawstring (13) pass through the mounting box. (1421) A through hole is opened on the outer wall and connected to the slider (1422). The lever (1425) is located between the slider (1422) and the pressure spring (1426). One end of the lever (1425) away from the reaction tank (3) is hinged to the inner wall of the mounting box (1421). The other end of the lever (1425) is inclined towards the limiting rod (1423). The pressure spring (1426) is connected to the lever (1425) and can apply a force close to the limiting rod (1423) to the lever (1425). The slider (1422) abuts against the side of the lever (1425) away from the pressure spring (1426) and can slide along the lever (1425). When the slider (1422) moves closer to the reaction tank (3) along the limiting rod (1423), the main compression spring (1424) contracts and the lever arm between the slider (1422) and the lever (1425) increases. When the slider (1422) moves away from the reaction tank (3) along the limiting rod (1423), the main compression spring (1424) extends and the lever arm between the slider (1422) and the lever (1425) decreases.

5. The curtain-type fume treatment and purification system for hot-dip galvanizing according to claim 4, characterized in that: Both ends of the drawstring (13) are detachably connected to the slider (1422).

6. The curtain-type fume treatment and purification system for hot-dip galvanizing according to claim 5, characterized in that: The slider (1422) has two slots, and both ends of the draw rope (13) are connected to inserts (131). The inserts (131) correspond one-to-one with the slots. Each insert (131) can be inserted into the corresponding slot and abut against the side wall of the slot facing away from the reaction tank (3).

7. The curtain-type fume treatment and purification system for hot-dip galvanizing according to claim 4, characterized in that: The constant force component (142) further includes a limiting bolt (1427) and an adjusting nut (1428). The screw end of the limiting bolt (1427) passes through the through hole opened on the slider (1422) along the length direction of the limiting rod (1423) and is connected to the inner wall of the mounting box (1421). The screw head end of the limiting bolt (1427) can abut against the side of the slider (1422) near the reaction tank (3). The adjusting nut (1428) is screwed onto the limiting bolt (1427), and the adjusting nut (1428) can abut against the side of the slider (1422) away from the reaction tank (3).

8. The curtain-type fume treatment and purification system for hot-dip galvanizing according to claim 1, characterized in that: The purification component (2) also includes a purification tower (22) and an exhaust fan (23). The air inlet of the purification tower (22) is connected to the air outlet of the exhaust hood (21) through a pipe, and the air outlet of the purification tower (22) is connected to the exhaust fan (23) through a pipe.

9. A curtain-type fume treatment and purification system for hot-dip galvanizing according to claim 1, characterized in that: The bottom of the bracket (11) is provided with casters (112).

10. A method for purifying hot-dip galvanizing, implemented using the curtain-type fume treatment and purification system for hot-dip galvanizing as described in claim 7, characterized in that... Including the opening and closing process: Opening process: First, adjust the adjusting nut (1428) so that it abuts against the side of the slider (1422) away from the reaction tank (3). Then, remove the end of the draw rope (13) that is detachably connected to the slider (1422). Then, pull open one side of the curtain (12) along the slide rail (111) to form an opening. Workpieces can then be loaded or unloaded into the reaction tank (3) through this opening. Sealing process: After the workpiece operation is completed, first restore the curtain (12) that has been pulled open to the closed enclosure state, then pass the detached end of the draw rope (13) around the rope winding post (141) and reconnect it to the slider (1422), and finally adjust the adjusting nut (1428) to move it away from the slider (1422) so that the constant force component (142) can automatically tighten the curtain (12) through the draw rope (13) and continuously press it against the outer wall of the reaction tank (3). Then start the purification component (2) to suck up and purify the smoke and dust.

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