High-temperature-resistant dust removal filter bag

Abstract

The utility model discloses a high-temperature-resistant dust removal filter bag which comprises a filter bag body, a protection structure is arranged on the outer side of the filter bag body, an anti-falling structure is installed at the top end of the filter bag body, a sealing structure is installed at the top end of the inner side of the filter bag body, and the sealing structure comprises a sealing ring, an adjusting plate, a connecting plate and an adjusting screw rod. The top end of the outer side of the filter bag body is provided with the sealing ring, the sealing ring is clamped on the inner side wall of the hole of the perforated plate, the adjusting plates are installed on the inner side of the filter bag body, the adjusting screw penetrates through the connecting plate for connection, the adjusting screw is screwed to enable the adjusting plates on the two sides to be far away from each other, and then the sealing ring is extruded. According to the dust removal filter bag, the joint of the filter bag body and the perforated plate is ensured to be completely sealed, dust-containing gas is ensured not to leak from a gap during filtering, so that the filtering effect is ensured, and the dust removal filter bag can be disassembled only by reversely screwing the adjusting screw rod during replacement, so that the aim of improving the sealing property of the dust removal filter bag is fulfilled.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal filter bags, in particular to a high-temperature resistant dust removal filter bag. Background Art

[0002] Dust filter bag is a kind of high-efficiency dust filter material, which is widely used in air pollution control in various industrial fields. Dust filter bag is a key part of the operation process of bag dust collector. It is usually cylindrical and hung vertically in the dust collector to capture and filter dust particles in the air. According to the material, shape, filtering method and temperature tolerance of dust filter bag, it can be divided into many types, such as flat bag and round bag, external filter type and internal filter type, normal temperature type, medium temperature type and high temperature type, etc. The working principle of dust filter bag is to use the filter bag to filter and capture dust in the air. When the dust-laden gas passes through the dust collector, the dust is captured on the outer surface of the filter bag, while the clean gas passes through the filter material into the filter bag and is finally discharged from the air outlet. The cage inside the filter bag is used to support the filter bag to prevent it from collapsing and help to remove and redistribute the dust cake. Dust filter bags are widely used in various industries, such as cement, steel, chemical, electric power, mining, pharmaceuticals, food, etc. These industries will generate a lot of dust and smoke during the production process. The dust filter bags can effectively capture and filter these particulate matter to ensure the cleanliness of the production environment and the compliance of air quality.

[0003] To this end, China's patent application number CN206103541U discloses a high-temperature resistant dust removal filter bag, including an outer surface coating and an inner surface coating; a wavy layer and a high-temperature resistant layer are provided between the outer surface coating and the inner surface coating; the wavy layer is provided between the high-temperature resistant layer and the outer surface coating; the utility model solution greatly improves the deformation resistance and heat resistance of the filter bag by providing the wavy layer and the high-temperature resistant layer, is durable, ensures the service life of the filter bag, and meets production needs.

[0004] Today's dust filter bags can basically meet people's needs, but there are still some problems. The specific problems are as follows:

[0005] 1. It is difficult to improve the sealing of dust filter bags. During installation, there will be a gap between the dust filter bag and the installed perforated plate, causing dust-laden gas to leak from the gap of the filter bag, thereby reducing the dust removal efficiency. It is necessary to ensure that the dust filter bag and the perforated plate are completely fitted to reduce air and dust leakage.

[0006] 2. The dust filter bag is difficult to withstand high temperatures. In the steel, cement, electricity, chemical and other industries, many production processes will generate high-temperature dust and smoke. The dust filter bag is located in a high-temperature environment and will experience melting, deformation, and rupture, resulting in reduced dust removal efficiency and even failure of the dust removal system. The dust filter bag needs to be able to maintain stable performance in a high-temperature environment. Utility Model Content

[0007] The utility model aims to provide a high-temperature resistant dust removal filter bag, so as to solve the defects of the existing dust removal filter bag that it is difficult to improve the sealing performance and difficult to withstand high temperatures.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a high temperature resistant dust removal filter bag, comprising a filter bag body;

[0009] The outer side of the filter bag body is provided with a protective structure, the top of the filter bag body is provided with an anti-drop structure, and the top of the inner side of the filter bag body is provided with a sealing structure;

[0010] The sealing structure includes a sealing ring, an adjusting plate, a connecting plate and an adjusting screw. The sealing ring is bonded to the top of the outer side of the filter bag body, and the adjusting plate is installed at the top of the inner side of the filter bag body.

[0011] A connecting plate is integrally formed on the top of the adjusting plate, and a supporting rod is installed inside the filter bag body.

[0012] When in use, first pass the filter bag body through the installed perforated plate and let it hang naturally. The supporting edge supports the edge of the perforated plate hole, and the sealing ring is stuck on the inner wall of the perforated plate hole. Then place the adjustment plate on the top of the inner wall of the filter bag body, and then turn the adjusting screw to move the adjustment plates on both sides away from each other to squeeze the sealing ring to increase the sealing. Extend the support rod into the filter bag body to support the filter bag. The fixed ring at the top is pressed on the supporting edge. The positioning rod passes through the positioning hole to ensure that the supporting edge will not be deformed, thereby completing the installation of the filter bag body.

[0013] Furthermore, the protective structure includes a polyimide fiber layer, a polytetrafluoroethylene coating and a nano-coating. The polyimide fiber layer is arranged on the outside of the filter bag body, the outer wall of the polyimide fiber layer is provided with a polytetrafluoroethylene coating, and the outer wall of the polytetrafluoroethylene coating is provided with a nano-coating, so that the dust filter bag can still ensure stable operation in a high temperature environment.

[0014] Furthermore, the anti-fall-off structure includes a supporting edge, a positioning hole, a fixing ring and a positioning rod. The supporting edge is integrally formed at the top of the filter bag body. Positioning holes are evenly opened inside the supporting edge. A fixing ring is installed at the top of the supporting edge to fix the dust filter bag to prevent it from falling off during use.

[0015] Furthermore, positioning rods are integrally formed at the bottom end of the fixing ring. The positioning rods are distributed in a ring shape and can pass through the positioning holes one by one to fix the supporting edge.

[0016] Furthermore, an adjusting screw passes through the interior of the connecting plate. The adjusting screw is symmetrically distributed about the central axis of the filter bag body and connects the connecting plates and the adjusting plates on both sides.

[0017] Furthermore, external threads are evenly provided on the outer wall of the adjusting screw, and internal threads that cooperate with the external threads are evenly provided on the inner wall of the connecting plate. The connecting plate and the adjusting screw are threadedly connected, and the distance between the connecting plates is adjusted by rotating to squeeze the sealing ring to improve the sealing performance.

[0018] Furthermore, a reinforcement ring is welded to the outside of the support rod. The reinforcement rings are evenly spaced on the outside of the support rod to support the filter bag body and prevent it from drying out and affecting the filtering efficiency.

[0019] The utility model provides a high-temperature resistant dust filter bag, which has the advantages that: a sealing ring is installed at the top end of the outer side of the filter bag body, the sealing ring is stuck on the inner wall of the hole of the perforated plate, and the adjusting plate is installed on the inner side of the filter bag body, and is connected by an adjusting screw passing through the connecting plate. Turning the adjusting screw can make the adjusting plates on both sides move away from each other, thereby squeezing the sealing ring to ensure that the connection between the filter bag body and the perforated plate is completely sealed, and dust-containing gas will not leak from the gap during filtration, thereby ensuring the filtration effect. When replacing, it is only necessary to turn the adjusting screw in the opposite direction to disassemble it, so as to achieve the purpose of improving the sealing of the dust filter bag.

[0020] By arranging a polyimide fiber layer, a polytetrafluoroethylene coating and a nano-coating on the outside of the filter bag body, the polyimide fiber can operate stably at a continuous working temperature of up to 260°C, which is suitable for dust removal in high-temperature environments. It also has good chemical corrosion resistance and can resist the erosion of various chemical substances, thereby extending the service life of the filter bag. Polytetrafluoroethylene is also a polymer material with excellent high-temperature resistance. It can maintain stable filtration efficiency at temperatures up to 260°C. The polytetrafluoroethylene coating can make the filter bag surface smooth and non-porous, which is easy to clean. The nano-coating can enhance the wear resistance of the filter bag, making it more resistant to the erosion and wear of particulate matter, so as to achieve the purpose of the dust removal filter bag being able to withstand high temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional explosion structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0024] Figure 4 This is a schematic diagram of a top-view cross-sectional structure of the utility model;

[0025] Figure 5 For the utility model Figure 3 Schematic diagram of the enlarged structure of the local section at point A in the middle.

[0026] Explanation of the reference numerals in the figure: 1. Filter bag body; 2. Protective structure; 201. Polyimide fiber layer; 202. Polytetrafluoroethylene coating; 203. Nano coating; 3. Anti-slip structure; 301. Support edge; 302. Positioning hole; 303. Fixing ring; 304. Positioning rod; 4. Sealing structure; 401. Sealing ring; 402. Adjusting plate; 403. Connecting plate; 404. Adjusting screw; 5. Support rod; 6. Reinforcement ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 5 The utility model provides an embodiment: a high-temperature resistant dust removal filter bag, including a filter bag body 1.

[0029] A protective structure 2 is provided on the outside of the filter bag body 1, and the protective structure 2 includes a polyimide fiber layer 201, a polytetrafluoroethylene coating 202 and a nano coating 203. The polyimide fiber layer 201 is provided on the outside of the filter bag body 1, and a polytetrafluoroethylene coating 202 is provided on the outer wall of the polyimide fiber layer 201, and a nano coating 203 is provided on the outer wall of the polytetrafluoroethylene coating 202.

[0030] Refer to the attached Figure 1 and attached Figure 3-5 As shown, a polyimide fiber layer 201, a polytetrafluoroethylene coating 202 and a nano-coating 203 are provided on the outside of the filter bag body 1. The polyimide fiber can operate stably at a continuous working temperature of up to 260°C, and is suitable for dust removal in high-temperature environments. It also has good chemical corrosion resistance and can resist the erosion of various chemical substances, thereby extending the service life of the filter bag. Polytetrafluoroethylene is also a polymer material with excellent high-temperature resistance and can maintain stable filtration efficiency at temperatures up to 260°C. The polytetrafluoroethylene coating 202 can make the surface of the filter bag smooth and free of pores, which is easy to clean. The nano-coating 203 can enhance the wear resistance of the filter bag, making it more resistant to erosion and wear of particulate matter.

[0031] An anti-slip structure 3 is installed at the top of the filter bag body 1, and the anti-slip structure 3 includes a supporting edge 301, a positioning hole 302, a fixing ring 303 and a positioning rod 304. The supporting edge 301 is integrally formed at the top of the filter bag body 1, and positioning holes 302 are evenly opened inside the supporting edge 301. A fixing ring 303 is installed at the top of the supporting edge 301, and a positioning rod 304 is integrally formed at the bottom end of the fixing ring 303. The positioning rods 304 are distributed in a ring shape.

[0032] Refer to the attached Figure 1-3 and attached Figure 5 As shown, a supporting edge 301 is integrally formed at the top of the filter bag body 1, and the filter bag body 1 can be hung on the perforated plate. A positioning rod 304 is integrally formed on the fixing ring 303, which can correspond one-to-one with the positioning hole 302 opened on the supporting edge 301. After the filter bag body 1 is installed, the fixing ring 303 is pressed on the supporting edge 301, and the positioning rod 304 passes through the positioning hole 302 to shape the supporting edge 301, thereby preventing the dust filter bag from loosening or falling off due to the impact of airflow during use, ensuring that the filter bag remains stable during the dust removal process and effectively captures dust, thereby improving the overall performance of the dust collector.

[0033] A sealing structure 4 is installed at the top of the inner side of the filter bag body 1. The sealing structure 4 includes a sealing ring 401, an adjusting plate 402, a connecting plate 403 and an adjusting screw 404. The sealing ring 401 is bonded to the top of the outer side of the filter bag body 1, and the adjusting plate 402 is installed at the top of the inner side of the filter bag body 1. The top of the adjusting plate 402 is integrally formed with a connecting plate 403. The interior of the connecting plate 403 is penetrated by an adjusting screw 404. The adjusting screw 404 is symmetrically distributed about the central axis of the filter bag body 1. External threads are evenly provided on the outer side wall of the adjusting screw 404, and internal threads that cooperate with the external threads are evenly provided on the inner side wall of the connecting plate 403. The connecting plate 403 and the adjusting screw 404 are threadedly connected.

[0034] Refer to the attached Figure 1-3 and attached Figure 5 As shown, a sealing ring 401 is installed at the top of the outer side of the filter bag body 1, and the sealing ring 401 is stuck on the inner wall of the hole of the perforated plate. The adjusting plate 402 is installed on the inner side of the filter bag body 1, and is connected by an adjusting screw 404 passing through the connecting plate 403. Turning the adjusting screw 404 can make the adjusting plates 402 on both sides move away from each other, thereby squeezing the sealing ring 401 to ensure that the connection between the filter bag body 1 and the perforated plate is completely sealed, and dust-containing gas will not leak from the gap during filtration, thereby ensuring the filtering effect. When replacing, you only need to turn the adjusting screw 404 in the opposite direction to disassemble it.

[0035] A support rod 5 is installed inside the filter bag body 1 , and a reinforcement ring 6 is welded to the outside of the support rod 5 . The reinforcement rings 6 are distributed at equal intervals on the outside of the support rod 5 .

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high temperature resistant dust removal filter bag, comprising a filter bag body (1); Its characteristics are: The outer side of the filter bag body (1) is provided with a protective structure (2), the top end of the filter bag body (1) is provided with an anti-slip structure (3), and the top end of the inner side of the filter bag body (1) is provided with a sealing structure (4); The sealing structure (4) comprises a sealing ring (401), an adjusting plate (402), a connecting plate (403) and an adjusting screw (404), wherein the sealing ring (401) is bonded to the top end of the outer side of the filter bag body (1), and the adjusting plate (402) is installed at the top end of the inner side of the filter bag body (1); A connecting plate (403) is integrally formed on the top end of the adjustment plate (402), and a support rod (5) is installed inside the filter bag body (1).

2. The high temperature resistant dust removal filter bag according to claim 1, characterized in that: The protective structure (2) comprises a polyimide fiber layer (201), a polytetrafluoroethylene film (202) and a nano coating (203); the polyimide fiber layer (201) is arranged on the outside of the filter bag body (1); the polytetrafluoroethylene film (202) is arranged on the outer wall of the polyimide fiber layer (201); and the nano coating (203) is arranged on the outer wall of the polytetrafluoroethylene film (202).

3. The high temperature resistant dust removal filter bag according to claim 1, characterized in that: The anti-slip structure (3) comprises a supporting edge (301), a positioning hole (302), a fixing ring (303) and a positioning rod (304); the supporting edge (301) is integrally formed at the top end of the filter bag body (1); the positioning holes (302) are evenly arranged inside the supporting edge (301); and the fixing ring (303) is installed at the top end of the supporting edge (301).

4. The high temperature resistant dust removal filter bag according to claim 3, characterized in that: The bottom end of the fixed ring (303) is integrally formed with a positioning rod (304), and the positioning rod (304) is distributed in a ring shape.

5. The high temperature resistant dust removal filter bag according to claim 1, characterized in that: An adjusting screw (404) passes through the interior of the connecting plate (403), and the adjusting screw (404) is symmetrically distributed about the central axis of the filter bag body (1).

6. The high temperature resistant dust removal filter bag according to claim 1, characterized in that: External threads are evenly arranged on the outer wall of the adjusting screw (404), and internal threads that cooperate with the external threads are evenly arranged on the inner wall of the connecting plate (403). The connecting plate (403) and the adjusting screw (404) are threadedly connected.

7. The high temperature resistant dust removal filter bag according to claim 1, characterized in that: A reinforcement ring (6) is welded to the outer side of the support rod (5), and the reinforcement rings (6) are distributed at equal intervals on the outer side of the support rod (5).

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