Flue gas purifier for hot-dip galvanizing processing
By using a flue gas purifier that filters zinc sheets with steel wire in the hot-dip galvanizing process, the problem of needing to regularly clean the zinc sheets in fixed hood-type flue gas purification devices has been solved, enabling continuous production and improving production efficiency.
Patent Information
- Application Number
- CN202423154795.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In the existing hot-dip galvanizing process, the fixed hood type flue gas purification device requires regular cleaning of the zinc sheet inside the flue gas duct, which affects production efficiency.
A flue gas purifier for hot-dip galvanizing was designed, which adopts a fixed hood, exhaust port, exhaust pipe, bag filter and filter wire structure. The zinc sheet is filtered by the filter wire to prevent the zinc sheet from entering the exhaust pipe. The filter frame can be replaced periodically to reduce downtime for cleaning.
This effectively prevents zinc foil from entering the exhaust duct, reduces downtime, improves production efficiency, and ensures continuous production.
Smart Images
Figure CN223628314U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to flue gas purification equipment technical field especially flue gas purifier for hot dip galvanizing processing. BACKGROUND
[0002] Hot dip galvanizing is a kind of surface treatment technology that steel components are immersed into zinc liquid to obtain a layer of metal coating. During the hot dip process, the flue gas generated in the zinc pot is less, but the agitation and volatilization of the plating aid on the components during the instant of immersion and extraction of the components in the zinc pot will cause a large amount of flue gas to be generated, which has a significant impact on the health of workers and environmental protection. Therefore, how to purify this part of flue gas has become an important problem in the hot dip galvanizing process.
[0003] The main treatment methods in the industry mainly include end-blowing end-suction type, double-side suction type and fixed cover type, among which the fixed cover type has the best effect. However, since the fixed cover type can suck away most of the flue gas, it will also often suck away a part of the zinc skin (a thin layer of zinc formed on the surface of the zinc liquid in the zinc pot, which will cause part of the zinc skin to be sucked away when the workpiece is immersed) during the process of sucking away the flue gas. This part of the zinc skin gradually accumulates after entering the exhaust pipe and slowly clogs the pipe, which needs to be cleaned regularly. The cleaning needs to stop production, which affects the production efficiency. UTILIZABLE CONTENT
[0004] The utility model aims at solving the problem that the fixed cover type flue gas purification device needs to clean the zinc skin in the exhaust pipe regularly during the hot dip galvanizing process, which affects the production efficiency, and proposes a flue gas purifier for hot dip galvanizing processing.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] The flue gas purifier for hot dip galvanizing processing includes a fixed cover installed above the opening of the zinc pot, an air suction port installed on both sides of the opening of the zinc pot, an exhaust pipe in communication with the air suction port, and a bag-type dust collector in communication with the exhaust pipe. The air suction port and the exhaust pipe are connected by an intermediate pipe. The top of the intermediate pipe is provided with a mounting hole. A filter frame is detachably installed in the mounting hole. A filter steel wire for filtering the zinc skin is installed in the filter frame.
[0007] Further, the end face of the air suction port close to the inner side of the zinc pot is provided with an air suction fence, and the air suction fence is inclined upward.
[0008] Further, the end face of the air suction port away from the inner side of the zinc pot is in communication with the intermediate pipe. The inside of the filter frame is provided with a filter channel. The cross section of the filter channel coincides with the cross section of the internal channel of the intermediate pipe. The filter steel wire is installed in the filter channel.
[0009] Further, the filter steel wires are multiple, and the multiple filter steel wires are spaced and staggered.
[0010] Further, the top of the filter frame is provided with a pull ring.
[0011] Further, operation windows are formed in the two side walls of the fixed cover, and baffles are arranged outside the operation windows and are slidably arranged on the fixed cover in the vertical direction.
[0012] Further, a second air curtain machine with a wind direction towards the zinc pot is arranged on the inner side wall of the fixed cover and is located at the top of the operation window.
[0013] Further, first air curtain machines with wind directions towards the zinc pot are arranged at the two ends of the fixed cover.
[0014] Compared with the prior art, the hot-dip zinc processing flue gas purifier has the following beneficial effects:
[0015] The hot-dip zinc processing flue gas purifier is used, the zinc pot is covered by the fixed cover to prevent the flue gas generated in the zinc pot from leaking outwards, the exhaust pipe draws the flue gas from the two sides of the zinc pot through the air suction port and then discharges the flue gas into the bag-type dust collector for filtration and purification, when the flue gas passes through the intermediate pipe, the smoke dust waste gas can pass through the filter steel wire, the zinc skin is blocked by the steel wire, so that the zinc skin is prevented from entering the exhaust pipe, then the filter frame is taken out and replaced before and after the workpiece is immersed in the zinc pot each time, compared with the need for regular shutdown and cleaning of the exhaust pipe in the prior art, the working interval time of each hot-dip is effectively utilized, the shutdown time is reduced, and the production efficiency is ensured.
[0016] Other advantages, objects and features of the present application will be apparent to those skilled in the art from the following description; and to some extent, based on the study of the following, it will be obvious to those skilled in the art; or, it can be taught from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a three-dimensional schematic view of the overall structure of the present application;
[0018] Figure 2 It is a schematic view of the main view direction of the overall structure of the present application;
[0019] Figure 3 It is a schematic view of the Figure 2 It is an enlarged schematic view of the structure of part A;
[0020] Figure 4 It is a schematic view of the communication pipe structure of the present application;
[0021] Figure 5 It is the filtering steel wire distribution overhead view angle schematic view of the utility model;
[0022] Figure 6 It is the fixed cover internal structure schematic view of the utility model;
[0023] Figure 7 It is the installation effect schematic view of the utility model.
[0024] In the drawing,
[0025] 1, fixed cover;101, first air curtain machine;102, operation window;2, suction port;201, suction fence;3, smoke exhaust duct;4, intermediate duct;401, filter frame;402, mounting port;403, filter channel;404, filter steel wire;405, pull ring;5, bag-type dust collector;6, baffle;7, zinc pot;8, track crane;9, hydraulic cylinder;10, second air curtain machine. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.
[0027] With reference to Figures 1-7 , the utility model hot -dip galvanizing processing with flue gas purifier, including the fixed cover 1 of installing in the zinc pot 7 opening top, the suction port 2 of installing in the zinc pot 7 opening both sides, with the suction port 2 intercommunication's smoke exhaust duct 3, with the smoke exhaust duct 3 intercommunication's bag-type dust collector 5, in this application, zinc pot 7 is cuboid pool, fixed cover 1 constructs along the length direction of zinc pot 7, the left and right sides of fixed cover 1 are side wall, the front and rear ends are import and export, fixed cover 1 installs track crane 8 running from the import to the export direction in, suction port 2 is located on the inner wall of the both sides of zinc pot 7 opening, smoke exhaust duct 3 is communicated with fan simultaneously, air flow passes through suction port 2 and sucks the air and flue gas above zinc pot 7, then is arranged to bag-type dust collector 5 inside and carries out filtration purification, according to need, still can be connected in the discharge port of bag-type dust collector 5 ammonia-removing tower, for going out the ammonia in flue gas.
[0028] Suction port 2 and smoke exhaust duct 3 are communicated through intermediate duct 4, suction port 2 itself is also a pipeline structure, the side of suction port 2 facing zinc pot 7 is provided with an opening, during production, the zinc liquid level in zinc pot 7 is lower than suction port 2, smoke exhaust duct 3 and intermediate duct 4 are all buried underground, wherein suction port 2 is located directly below the side wall of fixed cover 1, and smoke exhaust duct 3 and intermediate duct 4 are located outside fixed cover 1.
[0029] The top of the intermediate pipe 4 is provided with a mounting hole 402, and a filter frame 401 is detachably mounted in the mounting hole 402. The filter frame 401 is provided with filter wires 404 for filtering zinc skins. The smoke and zinc skins sucked from the air suction port 2 pass through the intermediate pipe 4 and enter the smoke exhaust pipe 3. When passing through the intermediate pipe 4, the smoke passes through the gaps between the filter wires 404, and the zinc skins are blocked by other filter wires 404 and adhere to the filter wires 404, so that the zinc skins in the smoke are filtered out.
[0030] During construction, a vertical channel is constructed on the outer side of the filter frame 401, which communicates with the mounting hole 402. The vertical channel is integrally formed with the intermediate pipe 4. The inner wall of the vertical channel is attached to the outer wall of the filter frame 401. The top of the vertical channel and the top of the filter frame 401 are flush with the floor in the workshop. The filter frame 401 is detachably mounted in the vertical channel and the mounting hole 402. A sealing gasket can also be mounted between the vertical channel and the filter frame 401 to reduce air leakage.
[0031] The air suction port 2 is provided with an air suction fence 201 on the end face close to the inner side of the zinc pot 7. The air suction fence 201 is inclined upward. Specifically, the air suction fence 201 has a structure similar to a louver, and is inclined toward the upper side of the zinc pot 7. This can effectively prevent the splashed zinc liquid from directly splashing into the air suction fence 201 at the moment when the workpiece is immersed in the zinc pot 7.
[0032] The end face of the air suction port 2 away from the inner side of the zinc pot 7 communicates with the intermediate pipe 4. The inside of the filter frame 401 is provided with a filter channel 403. When the filter frame 401 is mounted in the mounting hole 402, the cross section of the filter channel 403 coincides with the cross section of the internal channel of the intermediate pipe 4. As shown in Figure 3 When the smoke passes through the inside of the intermediate pipe 4, it needs to pass through the filter channel 403. The filter wires 404 are mounted in the filter channel 403. When passing through the filter channel 403, the zinc skins adhere to the filter wires 404.
[0033] Specifically, the filter wires 404 are multiple, and the multiple filter wires 404 are spaced and staggered, as shown in Figure 4 The filter wires 404 are arranged in a matrix. There is a gap between two adjacent filter wires 404. In each row of filter wires 404 along the flow direction of the smoke, the filter wires 404 of the rear row are staggered with the filter wires 404 of the front row. When the smoke and zinc skins pass through the gaps between the front filter wires 404, they will hit the filter wires 404 encountered later. After the smoke hits the filter wires 404, most of it continues to flow around. After the zinc skins hit the filter wires 404, part of them will adhere to the filter wires 404. After multiple impacts and adhesions, most of the zinc skins will adhere to the filter wires 404.
[0034] The top of the filtering frame 401 is connected with a pull ring 405, when the filtering frame 401 needs to be taken out, the filtering frame 401 can be pulled out from the installation opening 402 by pulling the pull ring 405.
[0035] An operation window 102 is arranged on the two side walls of the fixed cover 1, a baffle 6 is arranged outside the operation window 102, the baffle 6 is slidingly arranged on the fixed cover 1 in the vertical direction, hydraulic cylinders 9 are arranged at the two ends of the baffle 6, and the baffle 6 is driven to ascend and descend through the hydraulic cylinders 9.
[0036] When the workpiece is taken out from the zinc liquid, a layer of thick zinc skin is still formed on the surface of the zinc liquid, and the zinc skin needs to be removed to avoid the zinc layer adhered to the surface of the workpiece when the workpiece is taken out from the zinc liquid, which affects the appearance and flatness of the workpiece. In the prior art, the zinc skin is generally removed manually. When the zinc skin needs to be removed, the baffle 6 is first lifted by the hydraulic cylinders 9, then a worker holds a tool and inserts the tool into the zinc pot 7 through the operation window 102, and then the zinc skin is removed, and then the workpiece is taken out from the zinc pot 7 by the track crane 8.
[0037] A second air curtain machine 10 with the wind direction towards the zinc pot 7 is arranged on the inner wall of the fixed cover 1, the second air curtain machine 10 is located at the top of the operation window 102, and the second air curtain machine 10 cooperates with the air flow entering the air suction opening 2 to blow the smoke gas leaked from the air flow downward into the range of the air flow again, so as to reduce the leakage of the smoke gas.
[0038] First air curtain machines 101 with the wind direction towards the zinc pot 7 are arranged at the two ends of the fixed cover 1, so as to avoid the leakage of the smoke gas from the inlet and outlet of the two ends of the fixed cover 1, and meanwhile, the track crane 8 can hoist the workpiece without being affected.
[0039] Working principle: the purifier is started during the time period from when the workpiece reaches above the zinc pot 7 to when the workpiece is immersed in the zinc liquid, and from when the workpiece is immersed in the zinc liquid to when the workpiece is taken out from the zinc liquid. When the workpiece is immersed in the zinc liquid or taken out from the zinc liquid, the first air curtain machines 101 and the second air curtain machine 10 reduce the leakage of the smoke gas from the fixed cover 1, the air flow formed above the zinc pot 7 is taken away, the smoke gas enters the intermediate pipeline 4 from the air suction opening 2, the zinc skin is filtered by the filtering steel wires 404 when passing through the filtering channel 403, the smoke gas enters the exhaust pipeline 3, and finally enters the bag-type dust collector 5 for filtering and purification. Finally, the filtering frame 401 is replaced during the time period from when the workpiece leaves the zinc pot 7 to when the next workpiece reaches above the zinc pot 7.
[0040] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes to the technical scheme and the inventive concept of the present application within the technical scope disclosed by the present application, and all of them should be covered within the protection scope of the present application.
[0041] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.
[0042] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.
Claims
1. A flue gas purifier for hot-dip galvanizing processing, comprising a fixed cover (1) installed above the opening of a zinc pot (7), an air suction port (2) installed on both sides of the opening of the zinc pot (7), a flue gas discharge pipeline (3) in communication with the air suction port (2), and a bag-type dust collector (5) in communication with the flue gas discharge pipeline (3), characterized in that, The suction port (2) and the smoke exhaust duct (3) are communicated through the intermediate duct (4), the top of the intermediate duct (4) is provided with a mounting port (402), the mounting port (402) is detachably mounted with a filter frame (401), and the filter frame (401) is mounted with a filter steel wire (404) for filtering zinc skin.
2. The flue gas cleaner for hot dip galvanizing processing according to claim 1, characterized by The suction port (2) is provided with a suction fence (201) on the end face of the inner side of the zinc pot (7), and the suction fence (201) is inclined upward.
3. The flue gas cleaner for hot dip galvanizing processing according to claim 2, characterized by The end face of the suction port (2) away from the inner side of the zinc pot (7) is communicated with the intermediate duct (4), the inside of the filter frame (401) is provided with a filter channel (403), the cross section of the filter channel (403) coincides with the cross section of the internal channel of the intermediate duct (4), and the filter steel wire (404) is mounted in the filter channel (403).
4. The flue gas cleaner for hot dip galvanizing processing according to claim 3, characterized by The filter steel wire (404) has a plurality of filter steel wires (404), and the plurality of filter steel wires (404) are spaced and staggered.
5. The flue gas cleaner for hot dip galvanizing processing according to claim 1, characterized by The top of the filter frame (401) is provided with a pull ring (405).
6. The flue gas cleaner for hot dip galvanizing processing according to claim 1, characterized by The two side walls of the fixed cover (1) are provided with operation windows (102), the outer side of the operation window (102) is provided with a baffle (6), and the baffle (6) is slidingly installed on the fixed cover (1) in the vertical direction.
7. The flue gas cleaner for hot dip galvanizing processing according to claim 6, characterized by The inner side wall of the fixed cover (1) is provided with a second air curtain machine (10) with the wind direction towards the zinc pot (7), and the second air curtain machine (10) is located at the top of the operation window (102).
8. The flue gas cleaner for hot dip galvanizing processing according to claim 1, characterized by The two ends of the fixed cover (1) are provided with first air curtain machines (101) with the wind direction towards the zinc pot (7).