High-efficiency boiling dryer dust removal filter cartridge capable of improving dust interception
Through the design of a multi-layer structure dust removal filter cartridge, including dust removal bags, first intranet and second intranet, the problem of internal Netease separation is solved, efficient interception of dust and simplified disassembly and assembly is achieved, and the service life and efficiency of the equipment are improved.
Patent Information
- Application Number
- CN202422531663.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-18
AI Technical Summary
During the use of existing dust removal filter cartridges, the intranet and the filter material are prone to disconnection, resulting in a short service life and low dust interception rate. It consumes time and effort to disassemble and clean the intranet, affecting the equipment efficiency.
The dust removal filter cartridge design adopts a multi-layer structure, including a dust removal bag, the first intranet and the second intranet, enables rapid disassembly and assembly through the connection components, and cleans up dust under the action of the cleaning components to avoid accumulation.
It improves the dust interception rate, simplifies the disassembly and assembly process of the intranet, reduces cleaning time, and improves the service life and work efficiency of the equipment.
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Figure CN223221160U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dust interception, in particular to a high-efficiency boiling dryer dust removal filter cartridge with the function of improving dust interception. Background Art
[0002] The fluidized bed dryer improves powder flowability and reduces dust generation through powder granulation, improves powder solubility, and combines mixing, granulation, and drying in one machine for one-step granulation. Antistatic filter cloth ensures safe operation, and a pressure relief hole minimizes operator injury in the event of an explosion. The equipment offers no blind spots, enabling easy and fast loading and unloading, and clean rinsing, meeting GMP standards. The filter cartridge is a star-shaped filter made of a certain length of stiff filter media folded into pleats and glued end to end. The filter cartridge is cage-free and easy to install.
[0003] The inner net and filter material of the current dust filter cartridge are bonded to the top cover and bottom cover with glue, and the dust filter cartridge is formed after curing. When used on site, the bottom cover, inner net and filter material are easily separated due to the weight of the inner net and filter material, aging of the glue, and backwash cleaning pressure, causing the bottom cover to fall off, thereby causing the filter cartridge to slip and fall off, affecting the service life and dust removal effect of the dust filter cartridge.
[0004] Chinese patent document CN202123429193.7 discloses a dust filter cartridge, including a filter element, an upper cover is provided on the upper part of the filter element, a lower cover is provided on the lower part of the filter element, an inner net is provided in the filter element, the inner net passes through the interior of the filter element, one end of the inner net is fixedly connected to a sealing cap, the sealing cap partially covers the lower cover, the other end of the inner net partially extends out of the filter element, and the extended end is provided with an internal thread and an external thread, the upper cover is connected to the inner net through the external thread; however, there are still the following defects in the implementation process:
[0005] Although the device in the above-mentioned document can fix the upper cover and the lower cover together through the inner net, and fix one end of the inner net to the sealing cover to press against the lower cover, and the other end to the upper cover by an external thread, the filter element is effectively clamped between the upper cover and the lower cover, and the lower cover and the inner net filter element are effectively prevented from being separated, and the bottom cover is prevented from falling off, thereby increasing the service life and dust removal effect of the dust removal filter cartridge, but the device in the above-mentioned document adopts a single-layer filtration treatment method during use, and the filtration efficiency is relatively low, and the dust interception rate cannot be improved. At present, the inner net is fixed with glue or screws, and it is more time-consuming and labor-intensive to disassemble and clean the inner net, which leads to low working efficiency of the equipment. Utility Model Content
[0006] The purpose of the utility model is to provide a high-efficiency boiling dryer dust removal filter cartridge with improved dust interception, so as to solve the problem of low dust interception rate of single-layer filtration proposed in the above background technology.
[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:
[0008] A high-efficiency boiling dryer dust filter cartridge with improved dust interception capability comprises a main body; a plurality of support frames are fixedly connected to the bottom of the main body, the bottoms of the support frames are all fixedly connected to the same fixed base, the outer side walls of the support frames are detachably connected to a first inner net, a second inner net is plugged into the inner side wall of the first inner net, and a dust bag is detachably connected to the outer side wall of the second inner net; a connecting assembly, the connecting assembly is used to facilitate the installation of the first inner net and the second inner net, the connecting assembly is connected to the first inner net; a cleaning assembly, the cleaning assembly is used to pre-clean dust on the surface of the dust bag, and the cleaning assembly is connected to the dust bag.
[0009] The above-mentioned technical solution is adopted, in which the dust interception rate is improved by setting up dust removal bags, the first inner net and the second inner net, and the first inner net and the second inner net can be quickly disassembled and assembled under the action of the connecting component, which facilitates the subsequent cleaning of the first inner net and the second inner net. At the same time, the dust on the surface of the dust removal bag is cleaned under the action of the cleaning component to avoid excessive dust accumulation and low dust interception efficiency.
[0010] A further improvement of the technical solution of the present invention is that the connection component includes multiple limiting rings fixedly connected to the bottom of the first inner net, the outer side walls of the limiting rings are slidably connected with clamping rings, and the bottoms of the clamping rings are symmetrically installed with springs.
[0011] The above-mentioned technical solution is adopted, in which the number of limiting rings at the bottom of the first inner net is the same as the number of clamping rings, the diameter of the opening of the clamping ring is smaller than the diameter at the middle position, and the opening is rounded to avoid the limiting ring from getting stuck when inserted, and the first inner net and the limiting ring are an integrated structure, and the clamping ring is fixed to the inside of the fixed base by a pin and a spring.
[0012] A further improvement of the technical solution of the present invention is that the connecting component also includes a plurality of first slots opened at the bottom of the inner wall of the first inner net, and first arc-shaped pieces are symmetrically installed on the inner side walls of the first slots; a plurality of second slots are opened at the bottom of the second inner net, and second arc-shaped pieces are symmetrically installed on the inner side walls of the second slots.
[0013] The above technical solution is adopted, in which the second inner network is inserted from top to bottom, and the first slot is located inside the second slot.
[0014] A further improvement of the technical solution of the present invention is that the outer side wall of the first arc-shaped piece and the inner side wall of the second arc-shaped piece fit together, and the shape contour of the bottom of the first arc-shaped piece is adapted to the shape contour of the bottom of the second arc-shaped piece.
[0015] The above technical solution is adopted, in which the first slot and the first arc-shaped piece are an integrated structure, the first arc-shaped piece has an inward-bent rounded corner near the bottom of the first slot, and the second arc-shaped piece has an inward-bent rounded corner near the bending point of the first arc-shaped piece.
[0016] A further improvement of the technical solution of the present utility model is that the second inner net and the second arc-shaped piece are an integrated structure, the first arc-shaped piece and the first notch are an integrated structure, and the bottom of the second inner net is connected to the first inner net through the second arc-shaped piece.
[0017] The above technical solution is adopted, in which the second arc-shaped piece and the second notch are an integrated structure. When the second inner net is installed, the bottom of the second arc-shaped piece squeezes the bending part of the first arc-shaped piece to deviate to both sides.
[0018] A further improvement of the technical solution of the present utility model is that the cleaning component includes a limiting ring that is slidably sleeved on the outer wall of the dust removal bag, a limiting groove is opened at the middle position of the limiting ring, a plurality of limiting plates are symmetrically installed at the front end of the limiting groove, a plurality of fixing blocks are inserted on the inner wall of the limiting plate, and the cleaning ring is fixedly connected to the side of the fixing block away from the limiting groove.
[0019] The above technical solution is adopted, in which the cleaning ring is clamped on the inner wall of the limiting ring through a fixed block. During use, the pull ring on the outer wall of the limiting ring is pulled up and down, allowing the cleaning ring to process the dust on the surface of the dust bag.
[0020] A further improvement of the technical solution of the present invention is that: the number of the fixing blocks and the limiting plates is the same, and the fixing blocks are adapted to the shape contour of the limiting slots.
[0021] The above-mentioned technical solution is adopted, in which the fixed block adapts to the shape contour of the limiting groove, and a weakening groove is provided at the connection position of the limiting plate and the limiting groove, so that the limiting plate can undergo corresponding deformation after being pressurized by the fixed block, and the connection between the cleaning ring and the limiting ring is realized by utilizing the limiting groove, the limiting plate and the fixed block to cooperate with each other.
[0022] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:
[0023] 1. The utility model provides a high-efficiency boiling dryer dust filter cartridge with improved dust interception, which improves the dust interception rate by arranging a dust bag, a first inner net and a second inner net, and realizes the rapid disassembly and assembly of the first inner net and the second inner net under the action of the connecting component, which facilitates the subsequent cleaning of the first inner net and the second inner net. At the same time, the dust on the surface of the dust bag 2 is cleaned under the action of the cleaning component, avoiding excessive dust accumulation and low dust interception efficiency.
[0024] 2. The utility model provides a high-efficiency boiling dryer dust filter cartridge with improved dust interception, wherein the first notch and the first curved piece are an integrated structure, the first curved piece is rounded and bent inwardly at a position near the bottom of the first notch, and the second curved piece is also rounded and bent inwardly at a position near the bending part of the first curved piece, and the second curved piece and the second notch are an integrated structure. When the second inner net is installed, the second inner net is inserted from top to bottom, at this time, the first notch is located inside the second notch, and the bottom of the second curved piece squeezes the bending part of the first curved piece to deviate to both sides. After the insertion is completed, the first curved piece is reset, and its bending part is in contact with the bending part of the second curved piece, so as to fix the position of the second curved piece, thereby realizing the connection between the first inner net and the second inner net. This structure is simple, and when the first inner net and the second inner net need to be disassembled and assembled, no other tools are required to achieve quick disassembly and assembly, which saves time and has high practicality.
[0025] 3. The utility model provides a high-efficiency boiling dryer dust filter cartridge with improved dust interception. The cleaning ring is clamped on the inner wall of the limit ring through a fixed block. During use, the pull ring on the outer wall of the limit ring is pulled up and down to allow the cleaning ring to process the dust on the surface of the dust bag. The staff can regularly disassemble the cleaning ring for cleaning. It should be noted that the fixed block is adapted to the shape contour of the limit groove, and a weakening groove is provided at the connection position of the limit plate and the limit groove, so that the limit plate can undergo corresponding deformation after being pressurized by the fixed block, and the limit groove, the limit plate and the fixed block cooperate with each other to realize the connection between the cleaning ring and the limit ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The present invention will be further described below with reference to the accompanying drawings.
[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the main body and the support frame in the present utility model;
[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the first intranet and the second intranet in the present invention;
[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping ring and the limiting ring in the utility model;
[0031] Figure 5 This is a schematic diagram of the three-dimensional structure of the first intranet in the present utility model;
[0032] Figure 6 For this utility model Figure 5 Enlarged view of point A in the middle;
[0033] Figure 7 This is a schematic diagram of the three-dimensional structure of the second arc-shaped piece in the present invention;
[0034] Figure 8 This is a schematic diagram of the cross-sectional three-dimensional structure of the first inner network and the second inner network in the present invention;
[0035] Figure 9 For this utility model Figure 8 Enlarged view of point B in the middle;
[0036] Figure 10 This is a schematic diagram of the overall structure of the limiting ring in the utility model;
[0037] Figure 11 Schematic diagram of the three-dimensional structure of the limiting ring and the cleaning ring in the utility model;
[0038] Figure 12 Schematic diagram of the three-dimensional structure of the limiting groove and the fixing block in the utility model.
[0039] In the figure: 1. Main body; 2. Dust bag; 3. Limiting ring; 4. First inner net; 5. Second inner net; 6. Support frame; 7. Fixed base; 8. Snap-on ring; 9. Limiting ring; 10. Spring; 11. First notch; 12. First arc-shaped piece; 13. Second notch; 14. Second arc-shaped piece; 15. Cleaning ring; 16. Limiting groove; 17. Limiting plate; 18. Fixed block. DETAILED DESCRIPTION
[0040] The present invention is further described in detail below with reference to the embodiments:
[0041] Example 1
[0042] like Figure 1 、 Figure 2 and Figure 3As shown, the utility model provides a high-efficiency boiling dryer dust filter cartridge with improved dust interception, comprising a main body 1; a plurality of support frames 6 are fixedly connected to the bottom of the main body 1, the bottoms of the support frames 6 are all fixedly connected to the same fixed base 7, the outer side walls of the support frames 6 are detachably connected to a first inner net 4, the inner side wall of the first inner net 4 is plugged with a second inner net 5, and the outer side wall of the second inner net 5 is detachably connected to a dust bag 2; a connecting component, the connecting component is used to facilitate the installation of the first inner net 4 and the second inner net 5, the connecting component is connected to the first inner net 4; a cleaning component, the cleaning component is used to pre-clean the dust on the surface of the dust bag 2, and the cleaning component is connected to the dust bag 2.
[0043] In this embodiment, since a single-layer filtration method is currently used to intercept dust, resulting in low dust interception efficiency, the dust interception rate is improved by setting up a dust bag 2, a first inner net 4 and a second inner net 5, and the first inner net 4 and the second inner net 5 are quickly disassembled and assembled under the action of the connecting component, which facilitates the subsequent cleaning of the first inner net 4 and the second inner net 5. At the same time, the dust on the surface of the dust bag 2 is cleaned under the action of the cleaning component to avoid excessive dust accumulation leading to low dust interception efficiency.
[0044] Example 2
[0045] like Figure 4-Figure 9 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the connection component includes a plurality of limiting rings 9 fixedly connected to the bottom of the first inner net 4, and the outer side walls of the limiting rings 9 are slidably connected with clamping rings 8, and the bottoms of the clamping rings 8 are symmetrically installed with springs 10. The connection component also includes a plurality of first slots 11 opened at the bottom of the inner wall of the first inner net 4, and the inner side walls of the first slots 11 are symmetrically installed with first arc-shaped pieces 12. The bottom of the second inner net 5 is provided with a plurality of second slots 13, and the inner side walls of the second slots 13 are symmetrically installed with second arc-shaped pieces 14. The outer side walls of the first arc-shaped pieces 12 and the inner side walls of the second arc-shaped pieces 14 are fitted together, and the shape contour of the bottom of the first arc-shaped piece 12 is adapted to the shape contour of the bottom of the second arc-shaped piece 14. The second inner net 5 and the second arc-shaped piece 14 are an integrated structure, the first arc-shaped piece 12 and the first slot 11 are an integrated structure, and the bottom of the second inner net 5 is connected to the first inner net 4 through the second arc-shaped piece 14.
[0046] In this embodiment, since the current disassembly and assembly method of the inner net is relatively cumbersome, a lot of time is wasted on disassembly and assembly of the inner net when it needs to be cleaned. By setting the number of limiting rings 9 at the bottom of the first inner net 4 to be the same as the number of clamping rings 8, the first inner net 4 can be pressed downward from top to bottom. At this time, the outer wall of the limiting ring 9 squeezes the opening of the clamping ring 8, and the clamping ring 8 is offset to both sides under the action of the spring 10. When the outer wall of the limiting ring 9 is completely in contact with the inner wall of the clamping ring 8, the clamping ring 8 is reset under the action of the spring 10.
[0047] It should be noted that the diameter of the opening of the clamping ring 8 is smaller than the diameter at the middle position, and the opening is rounded to avoid the limiting ring 9 from getting stuck when inserted, and the first inner net 4 and the limiting ring 9 are an integrated structure, and the clamping ring 8 is fixed to the inside of the fixed base 7 by a pin and a spring 10.
[0048] Specifically, the first slot 11 and the first curved piece 12 are an integrated structure, and the first curved piece 12 is rounded and bent inward at the position near the bottom of the first slot 11, and the second curved piece 14 is also rounded and bent inward at the position near the bending point of the first curved piece 12, and the second curved piece 14 and the second slot 13 are an integrated structure. When installing the second inner net 5, the second inner net 5 is inserted from top to bottom. At this time, the first slot 11 is located inside the second slot 13, and the bottom of the second curved piece 14 squeezes the bending point of the first curved piece 12 to offset to both sides. After the insertion is completed, the first curved piece 12 is reset, and its bending point fits the bending point of the second curved piece 14 to fix the position of the second curved piece 14, thereby realizing the connection between the first inner net 4 and the second inner net 5. This structure is simple. When the first inner net 4 and the second inner net 5 need to be disassembled and assembled, no other tools are required to achieve quick disassembly and assembly, which saves more time and has high practicality.
[0049] Example 3
[0050] like Figure 10 、 Figure 11 and Figure 12 As shown, based on Example 1, the utility model provides a technical solution: preferably, the cleaning component includes a limiting ring 3 that is slidably sleeved on the outer wall of the dust bag 2, and a limiting groove 16 is opened at the middle position of the limiting ring 3. A plurality of limiting plates 17 are symmetrically installed at the front end of the limiting groove 16, and a plurality of fixing blocks 18 are inserted on the inner wall of the limiting plate 17. The side of the fixing block 18 away from the limiting groove 16 is fixedly connected to the cleaning ring 15. The number of the fixing blocks 18 and the limiting plates 17 is the same, and the fixed blocks 18 are adapted to the shape contour of the limiting groove 16.
[0051] In this embodiment, after the dust filter cartridge has been used for a period of time, more dust will adhere to the surface of the dust filter cartridge. The increasing accumulation of dust will affect the ventilation volume of the dust filter cartridge, thereby causing the dust removal efficiency of the dust filter cartridge to be low.
[0052] Specifically, the cleaning ring 15 is clamped on the inner wall of the limiting ring 3 through the fixing block 18. During use, the pull ring on the outer wall of the limiting ring 3 is pulled up and down to allow the cleaning ring 15 to process the dust on the surface of the dust bag 2. The staff can regularly disassemble the cleaning ring 15 for cleaning. It should be noted that the fixing block 18 adapts to the shape contour of the limiting groove 16, and a weakening groove is provided at the connection position of the limiting plate 17 and the limiting groove 16, so that the limiting plate 17 can undergo corresponding deformation after being pressurized by the fixing block 18, and the limiting groove 16, the limiting plate 17 and the fixing block 18 cooperate with each other to realize the connection between the cleaning ring 15 and the limiting ring 3.
[0053] The working principle of the high-efficiency boiling dryer dust removal filter cartridge with improved dust interception is explained in detail below.
[0054] like Figures 1-12 As shown, before use, the first inner net 4 and the second inner net 5 are first installed. Specifically, the number of limiting rings 9 at the bottom of the first inner net 4 is the same as the number of clamping rings 8. Therefore, the first inner net 4 can be pressed downwards from top to bottom. At this time, the outer wall of the limiting ring 9 squeezes the opening of the clamping ring 8, and the clamping ring 8 is offset to both sides under the action of the spring 10. When the outer wall of the limiting ring 9 is completely in contact with the inner wall of the clamping ring 8, the clamping ring 8 is reset under the action of the spring 10. It should be noted that the diameter of the opening of the clamping ring 8 is smaller than the diameter at the middle position, and the opening is rounded to avoid the limiting ring 9 from getting stuck when inserted, and the first inner net 4 and the limiting ring 9 are an integrated structure, and the clamping ring 8 is fixed to the inside of the fixed base 7 by a pin and a spring 10;
[0055] Since the first slot 11 and the first curved piece 12 are an integrated structure, the first curved piece 12 is rounded and bent inwardly at the position near the bottom of the first slot 11, and the second curved piece 14 is also rounded and bent inwardly at the position near the bending point of the first curved piece 12, and the second curved piece 14 and the second slot 13 are an integrated structure. When the second inner net 5 is installed, the second inner net 5 is inserted from top to bottom. At this time, the first slot 11 is located inside the second slot 13, and the bottom of the second curved piece 14 squeezes the bending point of the first curved piece 12 to deviate to both sides. After the insertion is completed, the first curved piece 12 is reset, and its bending point is fitted with the bending point of the second curved piece 14, thereby fixing the position of the second curved piece 14, thereby realizing the connection between the first inner net 4 and the second inner net 5. This structure is simple, and when the first inner net 4 and the second inner net 5 need to be disassembled and assembled, no other tools are required to achieve quick disassembly and assembly, which saves more time and has high practicality.
[0056] The cleaning ring 15 is clamped on the inner wall of the limiting ring 3 through the fixing block 18. During use, the pull ring on the outer wall of the limiting ring 3 is pulled up and down to allow the cleaning ring 15 to process the dust on the surface of the dust bag 2. The staff can regularly disassemble the cleaning ring 15 for cleaning. It should be noted that the fixing block 18 adapts to the shape contour of the limiting groove 16, and a weakening groove is provided at the connection position of the limiting plate 17 and the limiting groove 16, so that the limiting plate 17 can undergo corresponding deformation after being pressurized by the fixing block 18, and the limiting groove 16, the limiting plate 17 and the fixing block 18 cooperate with each other to realize the connection between the cleaning ring 15 and the limiting ring 3.
[0057] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A high-efficiency dust removal filter cartridge for a fluidized bed dryer with improved dust interception, comprising a main body (1); characterized in that: The bottom of the main body (1) is fixedly connected to a plurality of support frames (6), the bottoms of the support frames (6) are all fixedly connected to the same fixed base (7), the outer side walls of the support frames (6) are all detachably connected to a first inner net (4), the inner side wall of the first inner net (4) is plugged with a second inner net (5), and the outer side wall of the second inner net (5) is detachably connected to a dust bag (2); A connection component, the connection component is used to facilitate the installation of the first intranet (4) and the second intranet (5), the connection component and the first intranet (4) are connected; A cleaning component is used for pre-cleaning dust on the surface of the dust removal bag (2), and the cleaning component is connected to the dust removal bag (2).
2. The high-efficiency dust removal filter cartridge for a fluidized bed dryer with improved dust interception according to claim 1, characterized in that: The connection assembly comprises a plurality of limiting rings (9) fixedly connected to the bottom of the first inner net (4), the outer side walls of the limiting rings (9) are all slidably connected with clamping rings (8), and the bottoms of the clamping rings (8) are symmetrically installed with springs (10).
3. The high-efficiency dust removal filter cartridge for a fluidized bed dryer with improved dust interception according to claim 1, characterized in that: The connection assembly further comprises a plurality of first slots (11) provided at the bottom of the inner wall of the first inner net (4), wherein first arc-shaped pieces (12) are symmetrically mounted on the inner side walls of the first slots (11), and a plurality of second slots (13) are provided at the bottom of the second inner net (5), wherein second arc-shaped pieces (14) are symmetrically mounted on the inner side walls of the second slots (13).
4. The high-efficiency dust removal filter cartridge for a fluidized bed dryer with improved dust interception according to claim 3, characterized in that: The outer side wall of the first arc-shaped piece (12) and the inner side wall of the second arc-shaped piece (14) are fitted together, and the shape contour of the bottom of the first arc-shaped piece (12) is adapted to the shape contour of the bottom of the second arc-shaped piece (14).
5. The high-efficiency dust removal filter cartridge for a fluidized bed dryer with improved dust interception according to claim 4, characterized in that: The second inner net (5) and the second arc-shaped piece (14) are an integrated structure, the first arc-shaped piece (12) and the first slot (11) are an integrated structure, and the bottom of the second inner net (5) is connected to the first inner net (4) via the second arc-shaped piece (14).
6. The high-efficiency dust removal filter cartridge for a fluidized bed dryer with improved dust interception according to claim 1, characterized in that: The cleaning assembly comprises a limiting ring (3) slidably sleeved on the outer wall of the dust bag (2); a limiting groove (16) is provided at the middle position of the limiting ring (3); a plurality of limiting plates (17) are symmetrically mounted at the front end of the limiting groove (16); a plurality of fixing blocks (18) are plugged into the inner wall of the limiting plate (17); and a cleaning ring (15) is fixedly connected to the side of the fixing block (18) away from the limiting groove (16).
7. The high-efficiency dust removal filter cartridge for a fluidized bed dryer with improved dust interception according to claim 6, characterized in that: The number of the fixing blocks (18) and the limiting plates (17) is the same, and the fixing blocks (18) are adapted to the shape profile of the limiting slots (16).
Citation Information
Patent Citations
Dust removal filter cartridge
CN217472989U