A flue gas filtering device

Abstract

The utility model provides a kind of flue gas filtering equipment, belong to flue gas filtering technical field, including shell, filter frame and support rib plate, the both ends of shell are equipped with flue gas inlet and flue gas outlet, drainage fan is equipped in flue gas outlet, filter frame is inserted in shell middle part, the middle part of filter frame has first overflow through hole, flue gas filter screen is located in first overflow through hole, and is located in one end close to flue gas inlet, flue gas filter screen is detachably connected with filter frame by fixed component, support rib plate is fixedly installed in first overflow through hole, and is located in one end close to flue gas outlet, including multiple longitudinal and transverse interlaced arrangement transverse rib plate and longitudinal rib plate, transverse rib plate and longitudinal rib plate abut on flue gas filter screen, for supporting flue gas filter screen.The utility model provides a kind of flue gas filtering equipment, flue gas filter screen is not easy to deform, filtering effect is good, flue gas filter screen is convenient to replace, single person can be operated to complete, personnel is saved, and labor cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas filtration technology, and more specifically, relates to a flue gas filtration device. Background Technology

[0002] During the hot stamping process of leather products, the hot stamping foil or film used is pressed onto the leather surface at high temperature. The leather material decomposes under heat, generating a large amount of harmful fumes. In order to meet emission requirements, the harmful fumes need to be filtered. The existing filtration device in the factory consists of a housing with a fume inlet and a fume outlet at each end. A duct fan is installed at the fume outlet, and a fume filter is inserted in the middle of the housing. Under the action of the duct fan, the fume forms an airflow, passes through the fume filter, and is discharged from the fume outlet. In practical applications, in order to improve work efficiency, a higher power duct fan is usually used. The airflow velocity formed by the fume is relatively high, which has a greater impact on the fume filter, causing the fume filter to deform and resulting in a decrease in filtration effect. Utility Model Content

[0003] The purpose of this utility model is to provide a flue gas filtration device, which aims to solve the problem of flue gas filter screens being easily deformed under airflow impact in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a flue gas filtration device, comprising: The housing has a flue gas inlet and a flue gas outlet at its two ends, and a duct fan is installed inside the flue gas outlet. A filter frame is inserted into the middle of the housing, and the middle of the filter frame has a first flow hole; A flue gas filter screen is disposed in the first flow hole and located at one end near the flue gas inlet. The flue gas filter screen is detachably connected to the filter frame through a fixing component. The supporting stiffener is fixedly installed in the first flow hole and located at one end near the flue gas outlet. It includes a plurality of transverse stiffeners and longitudinal stiffeners arranged in a crisscross pattern. The transverse stiffeners and the longitudinal stiffeners abut against the flue gas filter screen to support the flue gas filter screen.

[0005] In one possible implementation, the first flow passage includes a first hole and a second hole arranged sequentially along the airflow direction. The first hole and the second hole are coaxially arranged. The flow area of ​​the first hole is larger than that of the second hole. The flue gas filter is installed in the first hole. The transverse stiffener and the longitudinal stiffener are connected in the second hole. The flow area of ​​the second hole is smaller than the cross-sectional area of ​​the flue gas filter.

[0006] In one possible implementation, the fixing component includes a fixing frame, the fixing frame having a second flow passage in the middle, the flow passage area of ​​the second flow passage being larger than the flow passage area of ​​the second hole body, the fixing frame being inserted into the first hole body, the flue gas filter being located between the second hole body and the fixing frame, and the fixing frame being bolted to the filter frame.

[0007] In one possible implementation, a plurality of filter units are sequentially arranged in the middle of the housing along the airflow direction, the filter frame is installed in the filter unit, and the filtration level of the plurality of flue gas filters in the plurality of filter units is sequentially increased according to the filtration order.

[0008] In one possible implementation, each of the filter units has a sliding groove at its top and bottom along the transverse direction of the housing. The filter frame is slidably disposed in the sliding groove. Each filter unit has an inlet / outlet on its side wall corresponding to the filter frame. The filter frame slides into or out of the filter unit through the inlet / outlet. A sealing door is detachably connected to the side wall of the filter unit corresponding to the inlet / outlet.

[0009] In one possible implementation, the filter frame is provided with rollers at both the top and bottom ends, and the rollers abut against the groove.

[0010] In one possible implementation, a first positioning block is provided inside the housing corresponding to the filter frame. The first positioning block is located on the side wall opposite to the inlet and outlet and between the upper and lower slides. The filter frame has a first positioning groove at one end facing the first positioning block, which is used to insert and cooperate with the first positioning block.

[0011] In one possible implementation, the filter frame is provided with a second positioning groove at one end facing the inlet / outlet, and a second positioning block is provided on the inner wall of the sealing door corresponding to the second positioning groove, the second positioning block being used for insertion and engagement with the second positioning groove.

[0012] In one possible implementation, both the first positioning groove and the second positioning groove have V-shaped cross-sections.

[0013] In one possible implementation, the filter frame is provided with handles on both the front and rear sides of the end facing the inlet / outlet.

[0014] The beneficial effects of the flue gas filtration device provided by this utility model are as follows: Compared with the prior art, the flue gas filtration device of this utility model, by setting a supporting rib plate in the first flow hole of the filter frame, the supporting rib plate is composed of multiple crisscrossing transverse and longitudinal rib plates. These rib plates tightly abut against the flue gas filter screen, forming a stable support structure. When high-speed airflow passes through the flue gas filter screen, the supporting rib plate can disperse the impact force of the airflow on the flue gas filter screen, making the flue gas filter screen less prone to deformation when subjected to airflow impact, thereby always maintaining a good filtration state. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main structure of a flue gas filtration device provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the main structure of a flue gas filtration device after removing the blocking door, provided in an embodiment of the present utility model. Figure 3 For along Figure 1 Cross-sectional view of line AA in the middle; Figure 4 For along Figure 3 Cross-sectional view of the middle BB line; Figure 5 A front view structural diagram of the filter frame provided in an embodiment of this utility model; Figure 6 A top view of the filter frame provided in an embodiment of this utility model; Figure 7 For along Figure 6 Cross-sectional view of the CC line.

[0017] Explanation of reference numerals in the attached figures: 1. Shell; 11. Flue gas inlet; 12. Flue gas outlet; 13. Reduction section; 14. Inlet / outlet; 15. First positioning block; 2. Filter frame; 21. First flow passage; 211. First hole; 212. Second hole; 22. Mounting groove; 23. Roller; 24. Rotating shaft; 25. First positioning groove; 26. Second positioning groove; 3. Supporting stiffener; 31. Transverse stiffener; 32. Longitudinal stiffener; 4. Flue gas filter screen; 5. Fixing frame; 6. Handle; 7. Connecting beam; 71. Slide groove; 8. Sealing door; 81. Second positioning block; 9. Positioning stud. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0020] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] Please see Figures 1 to 7 The present invention provides a flue gas filtration device. The flue gas filtration device includes a housing 1, a filter frame 2, and a supporting rib 3. The housing 1 has a flue gas inlet 11 and a flue gas outlet 12 at its two ends, respectively. A ducting fan is installed inside the flue gas outlet 12. The filter frame 2 is inserted into the middle of the housing 1, and the middle of the filter frame 2 has a first flow hole 21. A flue gas filter screen 4 is disposed within the first flow hole 21 and located near the flue gas inlet 11. The flue gas filter screen 4 is detachably connected to the filter frame 2 via a fixing component. The supporting rib 3 is fixedly installed within the first flow hole 21 and located near the flue gas outlet 12. It includes multiple horizontal ribs 31 and vertical ribs 32 arranged in a crisscross pattern. The horizontal ribs 31 and vertical ribs 32 abut against the flue gas filter screen 4 to support it.

[0023] In this embodiment, the housing 1 is a rectangular structure with tapered sections 13 at both ends. The cross-sectional area of ​​the tapered sections 13 gradually decreases away from the housing 1. The flue gas inlet 11 and the flue gas outlet 12 are respectively located at the ends of the tapered sections 13 on the same side away from the housing 1. The filter frame 2 is a square frame structure, vertically arranged and horizontally inserted into the middle of the housing 1. The first flow-through hole 21 in the middle of the filter frame 2 forms a flow channel for the flue gas flow. In application, when the flue gas enters the housing 1, it flows towards the flue gas outlet 12 under the suction force generated by the induced draft fan. During this process, the flue gas passes through the flue gas filter screen 4 installed in the first flow-through hole 21 of the filter frame 2. Harmful impurities in the flue gas are intercepted on the surface of the flue gas filter screen 4, completing the filtration. The filtered flue gas continues to flow and is finally discharged from the flue gas outlet 12.

[0024] This utility model provides a flue gas filtration device. Compared with the prior art, it features a supporting rib 3 within the first flow hole 21 of the filter frame 2. The supporting rib 3 is composed of multiple intersecting transverse ribs 31 and longitudinal ribs 32, which closely abut against the flue gas filter screen 4 to form a stable support structure. When high-speed airflow passes through the flue gas filter screen 4, the supporting rib 3 can disperse the impact force of the airflow on the flue gas filter screen 4, making the flue gas filter screen 4 less prone to deformation when subjected to airflow impact, thus maintaining a good filtration state at all times.

[0025] In some embodiments, please refer to Figure 7 The first flow passage 21 is a rectangular stepped hole. Specifically, the first flow passage 21 includes a first hole body 211 and a second hole body 212 arranged sequentially along the airflow direction. The first hole body 211 and the second hole body 212 are coaxially arranged, and the flow area of ​​the first hole body 211 is larger than the flow area of ​​the second hole body 212. The flue gas filter 4 is installed in the first hole body 211. The transverse stiffener 31 and the longitudinal stiffener 32 are connected to the side wall of the second hole body 212. In this embodiment, the shape of the flue gas filter 4 is adapted to the first hole body 211, and the flow area of ​​the second hole body 212 is smaller than the cross-sectional area of ​​the flue gas filter 4. When the flue gas filter 4 is installed in the first hole body 211, the flue gas filter 4 can completely cover the second hole body 212. In this embodiment, multiple transverse stiffeners 31 are arranged parallel to each other and spaced apart, and multiple longitudinal stiffeners 32 are also arranged parallel to each other and spaced apart. This makes the multiple transverse stiffeners 31 and multiple longitudinal stiffeners 32 together form a grid structure. In application, the grid structure is set behind the flue gas filter 4. When the flue gas filter 4 is impacted by the flue gas flow, the flue gas filter 4 can abut against the grid structure. The grid structure provides strong support for the flue gas filter 4 and can prevent the flue gas filter 4 from deforming.

[0026] In this embodiment, please refer to Figure 5 and Figure 7 The aforementioned fixing component is a fixing frame 5, which is a rectangular frame structure adapted to the size of the first hole 211. A second flow hole is provided in the middle of the fixing frame 5. The flow area of ​​the second flow hole is larger than the flow area of ​​the second hole 212. During installation, the fixing frame 5 is inserted into the first hole 211, and the flue gas filter 4 is placed between the second hole 212 and the fixing frame 5. This layout allows the flue gas filter 4 to be stably positioned in the filtering position. The fixed frame 5 and the filter frame 2 are fixed together by bolting. This bolting method ensures that the flue gas filter 4 is tightly fixed in the first hole 211, preventing displacement or loosening of the flue gas filter 4 when subjected to airflow impact. This guarantees the stability of the flue gas filter 4 during the filtration process, thereby effectively improving the filtration effect. In terms of equipment maintenance, the bolted connection makes the disassembly and installation of the fixed frame 5 very convenient. When it is necessary to clean or replace the flue gas filter 4, simply unscrew the bolts to easily remove the fixed frame 5 and quickly take out the flue gas filter 4, greatly shortening the equipment maintenance time and improving the equipment maintenance efficiency.

[0027] In some embodiments, please refer to Figures 1 to 4 Multiple filter units are sequentially arranged in the middle of the housing 1 along the airflow direction. Filter frames 2 are installed in the filter units, and the filtration levels of the multiple flue gas filters 4 in the multiple filter units increase sequentially according to the filtration order. When harmful fumes generated during the hot stamping process of leather products enter the housing 1 through the flue gas inlet 11, they first pass through the flue gas filter 4 in the first filter unit. This filter intercepts some of the larger particles of harmful impurities and pollutants, completing the initial filtration. Subsequently, the flue gas that has undergone initial filtration continues to flow into the next filter unit, where it passes through the flue gas filter 4 with a higher filtration level. This filter can filter out finer particles and some harmful components that were not removed by the initial filtration. In this way, after the flue gas passes through the flue gas filters 4 in multiple filter units with progressively higher filtration levels, it is more thoroughly purified and finally discharged clean gas from the flue gas outlet 12.

[0028] In this embodiment, each filter unit has a connecting beam 7 at its top and bottom along the transverse direction of the housing 1. A groove 71 is provided along the length of the end face of the connecting beam 7 facing the interior of the housing 1. In this embodiment, the upper and lower connecting beams 7 are located in the same longitudinal plane, and the filter frame 2 is slidably disposed between the upper and lower grooves 71. In this embodiment, each filter unit has an inlet / outlet 14 on its side wall corresponding to the filter frame 2. The inlet / outlet 14 is rectangular, with a width greater than the thickness of the filter frame 2 and a height greater than the length of the filter frame 2. In application, by sliding the filter frame 2, it can slide into or out of the filter unit through the inlet / outlet 14, facilitating the replacement of the flue gas filter 4 on the filter frame 2. In this embodiment, a sealing door 8 is detachably connected to the side wall of the filter unit corresponding to the inlet and outlet 14. An annular sealing gasket is provided on the inner side of the sealing door 8. During the operation of filtering flue gas, the sealing door 8 is bolted and fixed to the housing 1, sealing the inlet and outlet 14. The annular sealing gasket is arranged around the inlet and outlet 14 and is clamped between the sealing door 8 and the housing 1, forming a seal for the inlet and outlet 14 and preventing the flue gas inside the housing 1 from escaping.

[0029] In some embodiments, please refer to Figures 2 to 5 The filter frame 2 has mounting grooves 22 on both the upper and lower end faces along its horizontal direction. Multiple rollers 23 are rotatably connected in the mounting grooves 22. The rollers 23 are spaced apart along the length of the mounting grooves 22. A rotating shaft 24 is provided in the middle of the rollers 23. The two ends of the rotating shaft 24 are rotatably connected to the two side walls of the mounting grooves 22. In this embodiment, the rollers 23 abut against the bottom surface of the slide groove 71. By setting the rollers 23, the friction between the filter frame 2 and the slide groove 71 is reduced, so that the sliding of the filter frame 2 is smoother. In practical applications, the filter frame 2 can be easily disassembled and installed by only one person, which greatly reduces the number of operators and reduces labor costs.

[0030] In some embodiments, please refer to Figure 3 , Figure 4 and Figure 6A first positioning block 15 is provided inside the housing 1 corresponding to the filter frame 2. The first positioning block 15 is located on the side wall opposite to the inlet / outlet 14 and between the upper and lower sliding grooves 71. In this embodiment, the first positioning block 15 is a long strip-shaped block. Both the upper and lower ends of the first positioning block 15 are inserted into the sliding grooves 71 on the same side. A first positioning groove 25 is provided on the end of the filter frame 2 facing the first positioning block 15. The first positioning groove 25 is a through groove that runs longitudinally through the filter frame 2. In application, when the filter frame 2 needs to be installed, the filter frame 2 is pushed along the sliding groove 71 toward the installation direction inside the housing 1, so that the first positioning groove 25 is aligned with the first positioning block 15 and the first positioning block 15 is inserted into the first positioning groove 25. Through the insertion and cooperation of the first positioning groove 25 and the first positioning block 15, the filter frame 2 is accurately positioned in the housing 1, ensuring that the filter frame 2 will not be displaced or shaken during the operation of the equipment, and ensuring that the flue gas can be stably filtered through the flue gas filter screen 4 in the filter frame 2.

[0031] Furthermore, a second positioning groove 26 is provided on the end face of the filter frame 2 facing the inlet / outlet 14. The second positioning groove 26 is a through groove that runs longitudinally through the filter frame 2. A second positioning block 81 is provided on the inner wall of the sealing door 8 corresponding to the second positioning groove 26. The second positioning block 81 is a longitudinally arranged elongated block. When the sealing door 8 needs to be installed, the sealing door 8 is brought close to the filter frame 2 so that the second positioning block 81 is aligned with the second positioning groove 26. Then the sealing door 8 is pushed, and the second positioning block 81 will be inserted into the second positioning groove 26. Through this insertion and mating method, the precise positioning and tight connection between the filter frame 2 and the sealing door 8 are achieved.

[0032] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 4 To ensure the accurate installation position of the sealing door 8 relative to the filter frame 2, multiple positioning studs 9 are provided on the outer wall of the housing 1. Positioning through holes are provided on the sealing door 8 corresponding to the positioning studs 9. In use, the sealing door 8 is inserted into the positioning studs 9 through the positioning through holes, thereby ensuring the accurate installation position of the sealing door 8. The sealing door 8 can be bolted and fixed to the housing 1 by the cooperation of the nut and the positioning studs 9.

[0033] In some embodiments, please refer to Figure 4 and Figure 6 The cross-sections of both the first positioning groove 25 and the second positioning groove 26 are designed to be V-shaped. When the first positioning block 15 is inserted into the first positioning groove 25 and the second positioning block 81 is inserted into the second positioning groove 26, the V-shaped groove walls can fit tightly against the sides of the positioning blocks. This creates a wedge-like effect when the positioning blocks and positioning grooves are inserted, ensuring the accuracy of positioning and the stability of the connection between the filter frame 2 and the housing 1, and between the filter frame 2 and the sealing door 8.

[0034] In some embodiments, please refer to Figure 2 , Figure 4 , Figure 5 and Figure 7 To facilitate operation of the filter frame 2, handles 6 are installed on both the front and rear sides of the end of the filter frame 2 facing the inlet / outlet 14. These handles 6 can be U-shaped for easy gripping. When it is necessary to install or remove the filter frame 2, the operator can easily grasp the handles 6 on both sides and apply force through the handles 6 to easily insert the filter frame 2 into the designated position in the housing 1, or remove the filter frame 2 from the housing 1.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flue gas filtration device, characterized in that, include: The housing (1) has a flue gas inlet (11) and a flue gas outlet (12) at its two ends, and a duct fan is provided in the flue gas outlet (12); A filter frame (2) is inserted into the middle of the housing (1), and the middle of the filter frame (2) has a first flow hole (21); A flue gas filter (4) is disposed in the first flow hole (21) and located at one end near the flue gas inlet (11). The flue gas filter (4) is detachably connected to the filter frame (2) by a fixing component. The supporting stiffener (3) is fixedly installed in the first flow hole (21) and located at one end near the flue gas outlet (12). It includes a plurality of horizontal stiffeners (31) and vertical stiffeners (32) arranged in a crisscross pattern. The horizontal stiffeners (31) and the vertical stiffeners (32) abut against the flue gas filter (4) to support the flue gas filter (4). The housing (1) has multiple filter units arranged sequentially along the airflow direction in the middle. The filter frame (2) is installed in the filter unit. The filtration level of the multiple flue gas filters (4) in the multiple filter units is increased sequentially according to the filtration order. Each of the filter units has a sliding groove (71) at the top and bottom along the transverse direction of the housing (1). The filter frame (2) is slidably disposed in the sliding groove (71). Each filter unit has an inlet (14) on its side wall corresponding to the filter frame (2). The filter frame (2) slides into or out of the filter unit through the inlet (14). A sealing door (8) is detachably connected to the side wall of the filter unit corresponding to the inlet (14). The housing (1) is provided with a first positioning block (15) corresponding to the filter frame (2). The first positioning block (15) is located on the side wall opposite to the inlet (14) and between the upper and lower slides (71). The filter frame (2) is provided with a first positioning groove (25) at one end facing the first positioning block (15). The first positioning groove (25) is used to insert and cooperate with the first positioning block (15). The filter frame (2) is provided with a second positioning groove (26) at one end facing the inlet / outlet (14), and a second positioning block (81) is provided on the inner wall of the sealing door (8) corresponding to the second positioning groove (26). The second positioning block (81) is used to insert and cooperate with the second positioning groove (26).

2. The flue gas filtration device as described in claim 1, characterized in that, The first flow passage (21) includes a first hole body (211) and a second hole body (212) arranged sequentially along the airflow direction. The first hole body (211) and the second hole body (212) are coaxially arranged. The flow area of ​​the first hole body (211) is larger than the flow area of ​​the second hole body (212). The flue gas filter (4) is installed in the first hole body (211). The transverse stiffener (31) and the longitudinal stiffener (32) are connected in the second hole body (212). The flow area of ​​the second hole body (212) is smaller than the cross-sectional area of ​​the flue gas filter (4).

3. The flue gas filtration device as described in claim 2, characterized in that, The fixing component includes a fixing frame (5), the fixing frame (5) has a second flow hole in the middle, the flow area of ​​the second flow hole is larger than the flow area of ​​the second hole body (212), the fixing frame (5) is inserted into the first hole body (211), the flue gas filter (4) is located between the second hole body (212) and the fixing frame (5), and the fixing frame (5) is bolted to the filter frame (2).

4. The flue gas filtration device as described in claim 1, characterized in that, The filter frame (2) is provided with rollers (23) at both the upper and lower ends, and the rollers (23) abut against the groove (71).

5. The flue gas filtration device as described in claim 1, characterized in that, The cross-sections of the first positioning groove (25) and the second positioning groove (26) are both V-shaped.

6. A flue gas filtration device as described in any one of claims 1-5, characterized in that, The filter frame (2) is provided with handles (6) on both the front and rear sides of the end facing the inlet (14).

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