Efficient dust arrester of rubber pad and mesh composite structure

Abstract

This invention discloses a high-efficiency dust catcher with a composite structure of rubber pad and mesh, belonging to the field of pneumatic conveying technology. It includes a conveying pipe, a dust filter assembly installed on the inner wall of the conveying pipe, and a conical sleeve fixedly connected to the inner wall of the conveying pipe. A spring is fixedly connected to the side of the conical sleeve closest to the dust filter assembly, and a movable ring is fixedly connected to the end of the spring furthest from the conical sleeve. This invention integrates the dust filter assembly and the dust-catching fluororubber pad into the same conveying pipe, achieving integrated filtration and one-way check function. This reduces connection points and leakage risks, eliminates dead zones in the pipeline and dust accumulation, and the dust filter assembly adopts a detachable modular design. Replacement only requires loosening bolts and pulling out the filter screen by the handle, without disassembling the entire pipeline. Simultaneously, the differential pressure drive structure automatically controls the opening and closing of the rubber pad according to the airflow direction, and the mesh constraint prevents the rubber pad from rolling over and falling off, improving sealing reliability and comprehensively enhancing operational stability and maintenance convenience.

Description

Technical Field

[0001] This invention relates to the field of pneumatic conveying technology, and more specifically, to a high-efficiency dust catcher with a composite structure of rubber pad and mesh. Background Technology

[0002] Pneumatic conveying systems are widely used in industrial applications such as fly ash conveying in thermal power plants, chemical powder conveying, and pneumatic transmission of cement and building materials. Their basic working principle is to use compressed air and fan-generated airflow to transport powdery and granular materials along a closed pipeline to the target location. In pneumatic conveying pipelines, it is typically necessary to simultaneously install a filter and an ash-blocking device. The filter intercepts dust particles carried forward in the airflow, preventing dust from entering downstream precision equipment and causing wear, jamming, or even failure. The ash-blocking device prevents ash from flowing back along the pipeline when the pipeline is shut down or when system pressure fluctuates, avoiding contamination of upstream pipelines and equipment. The combined use of these two devices is a crucial element in ensuring the long-term stable operation of the pneumatic conveying system.

[0003] Currently, pneumatic conveying systems commonly use separate series installations of pipeline filters and dust arresters. However, this method occupies a large space, has many flange connection points, is prone to leakage under vibration conditions, and has dead zones in the pipeline that lead to dust accumulation and caking. In addition, replacing the filter element requires disassembling the entire pipeline, which is cumbersome and results in long downtime. Furthermore, the rubber gasket of the dust arrester is prone to roll-up and detachment under pressure differential impact, leading to seal failure. Moreover, the system lacks real-time monitoring methods for filter element blockage, and maintenance personnel can only troubleshoot after the fact, resulting in delayed fault detection and easily triggering a chain reaction of pipeline leaks and equipment damage.

[0004] Therefore, we have made improvements and proposed a high-efficiency dust catcher with a composite structure of rubber pad and mesh. Summary of the Invention

[0005] In view of the above-mentioned problems in the existing technology, the purpose of the present invention is to provide a high-efficiency dust blocker with a rubber pad and mesh composite structure. To solve the above problems, the technical solution adopted by the present invention is as follows: a high-efficiency dust catcher with a rubber pad and mesh composite structure, comprising a conveying pipe, a dust filter assembly installed on the inner wall of the conveying pipe, a conical sleeve fixedly connected to the inner wall of the conveying pipe, a spring fixedly connected to the side of the conical sleeve near the dust filter assembly, a movable ring fixedly connected to the end of the spring away from the conical sleeve, the movable ring sliding on the inner wall of the conveying pipe, a connecting rod fixedly connected to the middle of the side of the movable ring near the conical sleeve, a conical plug fixedly connected to one end of the connecting rod, the conical plug matching the conical sleeve, and a dust-catching fluororubber pad fixedly connected to the end of the conical plug away from the connecting rod.

[0006] Preferably, the dust filter assembly includes an installation sleeve, which is fixedly connected to the inner wall of the conveying pipe. The installation sleeve has a receiving groove, and an installation frame slides through the conveying pipe. The installation frame is located in the receiving groove, a sealing plate is fixedly connected to the upper end of the installation frame, and a dust filter screen is fixedly connected to the inner wall of the installation frame.

[0007] Preferably, a plurality of bolts are slidably passed through the upper end of the sealing plate, and all of the bolts are threadedly connected to the outer wall of the conveying pipe.

[0008] Preferably, a handle is fixedly connected to the upper end of the sealing plate.

[0009] Preferably, an annular fixing frame is fixedly connected to the inner wall of the conveying pipe, and a mesh bag is fixedly connected to the inner wall of the annular fixing frame, with the mesh bag facing the dust-blocking fluororubber pad.

[0010] Preferably, two symmetrically arranged guide plates are fixedly connected to the inner wall of the conveying pipe, and the two guide plates are located between the dust filter and the moving ring.

[0011] Preferably, the side wall of the conveying pipe is connected to a drain pipe, a valve is installed inside the drain pipe, and the drain pipe is located on the side of the dust filter screen away from the dust-blocking fluororubber pad.

[0012] Preferably, two pressure gauges are installed on the side wall of the delivery pipe, with the two pressure gauges located at the air inlet and air outlet of the delivery pipe, respectively.

[0013] Preferably, flanges are fixedly connected to both sides of the conveying pipe. Preferably, the sealing plate is arc-shaped, the inner arc surface of the sealing plate is in contact with the outer surface of the conveying pipe, and a sealing gasket layer is provided on the inner arc surface of the sealing plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This device integrates the dust filter assembly and the dust-blocking fluororubber pad into the same conveying pipe, achieving an integrated function of filtration and one-way check. It effectively replaces the traditional split-type series installation method. This design significantly reduces the number of pipe connection points and flange sealing surfaces, reducing the risk of leakage at the source. At the same time, it eliminates the dead zone in the pipeline between the filter section and the dust-blocking section, preventing dust from accumulating and caking in the middle area, making the overall pipeline layout more compact and reliable.

[0015] 2. The dust filter assembly of this device adopts a detachable modular design. The dust filter screen is integrated into a pull-out structure through the mounting bracket, sealing plate and handle. When replacing it, you only need to loosen the bolts and pull the filter screen out of the conveying pipe by lifting the handle. There is no need to disassemble the entire pipeline, which significantly reduces maintenance downtime costs and improves availability.

[0016] 3. This device utilizes a differential pressure drive structure consisting of a conical sleeve, spring, moving ring, and conical plug. It can automatically control the opening and closing of the dust-blocking fluororubber pad according to the airflow direction. When airflow is in the forward direction, it automatically pushes open to form a passage. When airflow is in the reverse direction, it automatically presses the sealing surface to achieve check flow. At the same time, the mesh bag set directly opposite the dust-blocking fluororubber pad provides all-round displacement constraint, effectively preventing the dust-blocking fluororubber pad from rolling, shifting, and falling off under abnormal differential pressure impact, significantly improving the sealing reliability and long service life of reverse dust blocking.

[0017] 4. This device can directly discharge the intercepted dust by gravity through the drain pipe installed on the air inlet side of the dust filter, avoiding dust accumulation and caking. The pressure gauges installed at the inlet and outlet can monitor the differential pressure of the filter in real time, providing early warning for filter blockage. This realizes the transformation from passive maintenance to preventive maintenance, and comprehensively improves the operational stability and maintenance convenience of the pneumatic conveying system. Attached Figure Description

[0018] Figure 1 shows the main structure of a high-efficiency dust catcher with a rubber pad and mesh composite structure provided in this application. intention; Figure 2 is a cross-sectional view of a high-efficiency dust catcher with a rubber pad and mesh composite structure provided in this application; Figure 3 is a schematic diagram of the mounting frame and filter screen structure of a high-efficiency dust arrester with a rubber pad and mesh composite structure provided in this application; Figure 4 is a schematic diagram of the receiving groove structure of a high-efficiency dust catcher with a rubber pad and mesh composite structure provided in this application; Figure 5 is a schematic diagram of the mesh structure of a high-efficiency dust catcher with a rubber pad and mesh composite structure provided in this application.

[0019] In the diagram: 1. Conveying pipe; 2. Dust filter assembly; 201. Mounting sleeve; 202. Receiving tank; 203. Mounting bracket; 204. Sealing plate; 205. Dust filter screen; 206. Bolt; 207. Handle; 3. Conical sleeve; 4. Spring; 5. Moving ring; 6. Connecting rod; 7. Conical plug; 8. Dust-blocking fluororubber pad; 9. Annular fixing bracket; 10. Net bag; 11. Guide plate; 12. Sewage pipe; 13. Valve; 14. Pressure gauge; 15. Flange. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0021] Please refer to Figure 1- Figure 5 As shown, the present invention provides a technical solution: a high-efficiency dust catcher with a rubber pad and mesh composite structure, comprising a conveying pipe 1, a dust filter assembly 2 installed on the inner wall of the conveying pipe 1, a conical sleeve 3 fixedly connected to the inner wall of the conveying pipe 1, a spring 4 fixedly connected to the side of the conical sleeve 3 near the dust filter assembly 2, and a movable ring 5 fixedly connected to the end of the spring 4 away from the conical sleeve 3, the movable ring 5 sliding inside the conveying pipe 1. A connecting rod 6 is fixedly connected to the middle of the side of the moving ring 5 near the conical sleeve 3. A conical plug 7 is fixedly connected to one end of the connecting rod 6. The conical plug 7 matches the conical sleeve 3. A dust-blocking fluororubber pad 8 is fixedly connected to the end of the conical plug 7 away from the connecting rod 6.

[0022] Furthermore, the conveying pipe 1 provides an installation base and airflow channel for the dust filter assembly 2, conical sleeve 3, spring 4, moving ring 5, connecting rod 6, conical plug 7, and dust-blocking fluororubber pad 8, and bears the system pressure. The dust filter assembly 2 is installed on the inner wall of the conveying pipe 1 to intercept dust particles carried forward in the airflow, protecting downstream equipment from wear and jamming. The conical sleeve 3 is fixedly connected to the inner wall of the conveying pipe 1, forming a sealing pair with the conical plug 7, and providing a fixed support point for the spring 4, providing guidance and a sealing base for dust blocking. One end of the spring 4 is fixed to the conical sleeve 3, and the other end is connected to the moving ring 5. It relies on its own elasticity to assist the moving ring 5 in resetting, ensuring that the conical plug 7 can quickly press and seal when the airflow is reversed. The moving ring 5 slides on the inner wall of the conveying pipe 1, transmitting the elasticity of the spring 4 and the airflow pressure to the connecting rod 6, and slides axially along the inner wall of the conveying pipe 1 to ensure smooth movement. The connecting rod 6 is fixed between the moving ring 5 and the conical plug 7, holding the moving ring 5... The driving force is accurately transmitted to the conical plug 7 to achieve linkage control. The conical plug 7 matches the conical sleeve 3. When the airflow is forward, it disengages from the conical sleeve 3 to open the channel. When the airflow is reverse, it presses against the conical sleeve 3 to close the channel, thus achieving a one-way check function. The dust-blocking fluororubber pad 8 is fixed at the end of the conical plug 7 away from the connecting rod 6. As a direct sealing element, it contacts the conical sleeve 3 and the airflow. It relies on its own elastic deformation to improve the sealing fit and enhance the sealing reliability of reverse dust blocking.

[0023] In the preferred embodiment of this technical solution, please refer to Figures 2-4As shown, the dust filter assembly 2 includes a mounting sleeve 201, which is fixedly connected to the inner wall of the conveying pipe 1. The mounting sleeve 201 has a receiving groove 202. A mounting bracket 203 slides through the conveying pipe 1 and is located inside the receiving groove 202. A sealing plate 204 is fixedly connected to the upper end of the mounting bracket 203. A dust filter screen 205 is fixedly connected to the inner wall of the mounting bracket 203. Multiple bolts 206 slide through the upper end of the sealing plate 204 and are threaded to the outer wall of the conveying pipe 1. A handle 207 is fixedly connected to the upper end of the sealing plate 204. Furthermore, the mounting sleeve 201 is fixedly connected to the inner wall of the conveying pipe 1 to provide a stable mounting base for the entire dust filter assembly 2, ensuring that the dust filter assembly 2 does not shift during operation. The receiving groove 202 is formed on the mounting sleeve 201 to accommodate the mounting bracket 203 and to provide a guiding and limiting channel for the insertion and removal of the mounting bracket 203, ensuring accurate filter screen installation and removal paths. The mounting bracket 203 slides through the conveying pipe 1 and is located within the receiving groove 202, supporting the dust filter 205 and serving as a retractable module, enabling rapid installation and removal of the dust filter 205 within the conveying pipe 1. The sealing plate 204 is fixedly connected to the upper end of the mounting bracket 203 to seal the opening on the conveying pipe 1 after the mounting bracket 203 is installed, preventing dust-laden airflow from leaking from the installation port. The dust filter 205 is fixedly connected to the inner wall of the mounting bracket 203 to intercept forward-carrying dust particles in the airflow, ensuring clean downstream airflow. Bolt 206... A sliding through-sealing plate 204 is threaded onto the outer wall of the conveying pipe 1 to detachably lock the sealing plate 204 onto the conveying pipe 1, ensuring that the sealing plate 204 will not loosen or open due to vibration or air pressure during operation. A handle 207 is fixedly connected to the upper end of the sealing plate 204 to provide a gripping point for the operator, making it easy to pull out and insert the mounting bracket 203 along with the dust filter 205 from the receiving groove 202 and the conveying pipe 1 by holding the handle 207, thus achieving the purpose of quickly replacing the filter without disassembling the pipe.

[0024] In the preferred embodiment of this technical solution, please refer to Figure 2 and Figure 5 As shown, an annular fixing frame 9 is fixedly connected to the inner wall of the conveying pipe 1, and a net bag 10 is fixedly connected to the inner wall of the annular fixing frame 9. The net bag 10 is directly opposite the dust-blocking fluororubber pad 8.

[0025] Furthermore, the annular fixing frame 9 provides a stable installation support point for the net bag 10, ensuring that the position of the net bag 10 remains fixed in the working state. The net bag 10 is fixedly connected to the inner wall of the annular fixing frame 9 and faces the dust-blocking fluororubber pad 8. It is used to surround and support the dust-blocking fluororubber pad 8 from the downstream side, to support the pad during forward airflow to prevent it from excessive displacement, to hold the pad from the back during reverse airflow to prevent it from rolling and deforming, and to constrain the pad in all directions during abnormal pressure difference impact to ensure that the one-way sealing function does not fail.

[0026] In the preferred embodiment of this technical solution, please refer to Figure 2 As shown, the inner wall of the delivery pipe 1 is fixed. Two symmetrically arranged guide plates 11 are connected, located between the dust filter 205 and the moving ring 5.

[0027] Furthermore, two symmetrically arranged guide plates 11 are fixedly connected to the inner wall of the conveying pipe 1 and located between the dust filter 205 and the moving ring 5. They are used to guide and distribute the airflow after passing through the dust filter 205, so that the filtered airflow enters the dust blocking area evenly and avoids the airflow deviation causing uneven force on the dust blocking fluororubber pad 8. The two guide plates 11 ensure that the airflow flows symmetrically and evenly along the axial direction of the conveying pipe 1.

[0028] In the preferred embodiment of this technical solution, please refer to Figure 1 and... Figure 2 As shown, the side wall of the conveying pipe 1 is connected to the drain pipe 12, and a valve 13 is installed inside the drain pipe 12. The drain pipe 12 is located on the side of the dust filter 205 away from the dust-blocking fluororubber pad 8.

[0029] Furthermore, the drain pipe 12 is connected to the side wall of the conveying pipe 1 and located on the side of the dust filter 205 away from the dust-blocking fluororubber pad 8. It is used to form a dust discharge outlet on the air inlet side of the dust filter 205, so that the dust that is intercepted by the dust filter 205 and naturally settles can be directly discharged from the conveying pipe 1 by gravity, avoiding the long-term accumulation and caking of dust in the shell. The valve 13 is installed in the drain pipe 12 to control the opening and closing of the drain pipe 12. It is closed during normal system operation to prevent airflow leakage, and opened during system shutdown and maintenance to discharge the deposited dust.

[0030] In the preferred embodiment of this technical solution, please refer to Figure 1 and... Figure 2 As shown, two pressure gauges 14 are installed on the side wall of the conveying pipe 1. The two pressure gauges 14 are located at the air inlet and air outlet of the conveying pipe 1, respectively. Flanges 15 are fixedly connected to both sides of the conveying pipe 1.

[0031] Furthermore, two pressure gauges 14 are installed on the side wall of the conveying pipe 1, located at the inlet and outlet ends of the conveying pipe 1 respectively. These gauges are used to monitor the airflow pressure at the inlet and outlet ends of the conveying pipe 1 in real time. The differential pressure across the dust filter 205 is obtained by reading the difference between the two gauge readings, providing data for determining the degree of blockage of the dust filter 205. Flanges 15 are fixedly connected to both sides of the conveying pipe 1, allowing for quick connection and sealing between the two ends of the conveying pipe 1 and the upstream and downstream pipelines via flange connections. The entire device can be easily connected in series and installed in a pneumatic conveying system as an independent module.

[0032] In the preferred embodiment of this technical solution, please refer to Figure 2 and Figure 3 As shown, the sealing plate 204 is arc-shaped, and the inner arc surface of the sealing plate 204 is in contact with the outer surface of the conveying pipe 1. A sealing gasket layer is provided on the inner arc surface of the sealing plate 204.

[0033] Furthermore, the sealing plate 204 is arc-shaped and its inner arc surface is in contact with the outer surface of the conveying pipe 1. This ensures that the sealing plate 204 is tightly attached to the outer wall of the circular conveying pipe 1, guaranteeing that there is no gap between the sealing plate 204 and the pipe wall when it covers the installation port. The sealing gasket layer provided on the inner arc surface of the sealing plate 204 is used to fill the tiny gap between the sealing plate 204 and the outer surface of the conveying pipe 1. After the sealing plate 204 is pressed, it forms an elastic sealing barrier to prevent the dust-laden airflow in the conveying pipe 1 from leaking out from the installation port.

[0034] Working principle: Dust-laden gas enters from the inlet of the conveying pipe 1. The airflow first passes through the dust filter assembly 2, where the dust filter screen 205 intercepts the dust particles carried in the airflow. The clean gas continues to flow towards the outlet. The filtered gas passes through two symmetrically arranged guide plates 11, which make the airflow enter the dust blocking area evenly, avoiding the impact of the airflow deviation on subsequent components. The positive airflow pressure acts on the conical plug 7, pushing the connecting rod 6 and the dust blocking fluororubber pad 8 to move, thereby compressing the spring 4. At this time, the conical plug 7 and the conical sleeve 3 are no longer in contact, and the dust blocking fluororubber pad 8 is also no longer in contact with the conical sleeve 3. The channel is opened, and the airflow passes smoothly. When the dust blocking fluororubber pad 8 moves, it is supported by the net bag 10 arranged in front, preventing it from being excessively displaced and deformed under the push of the airflow, ensuring that the dust blocking fluororubber pad 8 is in the normal working position. When the pipeline stops operating and downstream pressure fluctuations generate reverse airflow, the reverse pressure acts on the dust-blocking fluororubber pad 8. The reverse pressure pushes the dust-blocking fluororubber pad 8 and the conical plug 7 to move. The moving ring 5 is reset with the help of the spring force of the spring 4, which can press the conical plug 7 tightly on the inner sealing surface of the conical sleeve 3. At this time, the channel is completely closed, the reverse airflow is blocked, and the gas cannot flow back into the upstream pipeline and the dust filter assembly 2 area. During this process, the net bag 10 holds the rubber pad from the back to prevent it from rolling and deforming under the impact of abnormal pressure difference, thus ensuring reliable sealing. When the dust filter 205 needs maintenance and replacement, cut off the gas in that section of the pipeline to ensure that the internal pressure drops to a safe range. Then loosen the bolts 206 to release the fixed connection between the sealing plate 204 and the outer wall of the delivery pipe 1. Then, hold the handle 207 and pull the mounting bracket 203 together with the dust filter 205 upward from the receiving groove 202 and the inside of the delivery pipe 1. After cleaning the dust filter 205, reinsert the mounting bracket 203 into the receiving groove 202, cover the sealing plate 204, and tighten the bolts 206 to complete the replacement. The whole process does not require disassembling the flange 15 connection between the delivery pipe 1 and the upstream and downstream pipelines. The drain pipe 12 is located on the air inlet side of the dust filter 205. The intercepted dust settles to the bottom of the conveying pipe 1 under gravity and accumulates at the inlet of the drain pipe 12. During regular maintenance, the valve 13 is opened and the deposited dust can be discharged directly through the drain pipe 12, avoiding the dust from accumulating in the conveying pipe 1.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0036] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A high-efficiency dust catcher with a composite structure of rubber pad and mesh, characterized in that, The device includes a conveying pipe (1), a dust filter assembly (2) installed on the inner wall of the conveying pipe (1), a conical sleeve (3) fixedly connected to the inner wall of the conveying pipe (1), a spring (4) fixedly connected to the side of the conical sleeve (3) near the dust filter assembly (2), a moving ring (5) fixedly connected to the end of the spring (4) away from the conical sleeve (3), the moving ring (5) sliding on the inner wall of the conveying pipe (1), a connecting rod (6) fixedly connected to the middle of the side of the moving ring (5) near the conical sleeve (3), a conical plug (7) fixedly connected to one end of the connecting rod (6), the conical plug (7) matching the conical sleeve (3), and a dust-blocking fluororubber pad (8) fixedly connected to the end of the conical plug (7) away from the connecting rod (6).

2. The high-efficiency dust catcher with a rubber pad and mesh composite structure according to claim 1, characterized in that, The dust filter assembly (2) includes an installation sleeve (201), which is fixedly connected to the inner wall of the conveying pipe (1). The installation sleeve (201) has a receiving groove (202). An installation frame (203) slides through the conveying pipe (1). The installation frame (203) is located in the receiving groove (202). A sealing plate (204) is fixedly connected to the upper end of the installation frame (203). A dust filter screen (205) is fixedly connected to the inner wall of the installation frame (203).

3. The high-efficiency dust catcher with a rubber pad and mesh composite structure according to claim 2, characterized in that, Multiple bolts (206) slide through the upper end of the sealing plate (204), and all of the bolts (206) are threaded to the outer wall of the conveying pipe (1).

4. The high-efficiency dust catcher with a rubber pad and mesh composite structure according to claim 2, characterized in that, A handle (207) is fixedly connected to the upper end of the sealing plate (204).

5. The high-efficiency dust catcher with a rubber pad and mesh composite structure according to claim 1, characterized in that, The inner wall of the conveying pipe (1) is fixedly connected to an annular fixing frame (9), and the inner wall of the annular fixing frame (9) is fixedly connected to a net bag (10), which is directly opposite the dust-blocking fluororubber pad (8).

6. The high-efficiency dust catcher with a rubber pad and mesh composite structure according to claim 2, characterized in that, The inner wall of the conveying pipe (1) is fixedly connected to two symmetrically arranged guide plates (11), which are located between the dust filter (205) and the moving ring (5).

7. The high-efficiency dust catcher with a rubber pad and mesh composite structure according to claim 2, characterized in that, The side wall of the conveying pipe (1) is connected to a drain pipe (12), and a valve (13) is installed inside the drain pipe (12). The drain pipe (12) is located on the side of the dust filter (205) away from the dust-blocking fluororubber pad (8).

8. The high-efficiency dust catcher with a rubber pad and mesh composite structure according to claim 1, characterized in that, Two pressure gauges (14) are installed on the side wall of the conveying pipe (1), and the two pressure gauges (14) are located at the air inlet and air outlet of the conveying pipe (1), respectively.

9. The high-efficiency dust catcher with a rubber pad and mesh composite structure according to claim 1, characterized in that, Flanges (15) are fixedly connected to both sides of the conveying pipe (1).

10. A high-efficiency dust catcher with a rubber pad and mesh composite structure according to claim 2, characterized in that, The sealing plate (204) is arc-shaped, and the inner arc surface of the sealing plate (204) is in contact with the outer surface of the conveying pipe (1). The inner arc surface of the sealing plate (204) is provided with a sealing gasket layer.

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