Self-cleaning metal screen assembly for coal gas cleaning equipment
The design of the self-cleaning metal filter assembly solves the problem of impurity accumulation on the filter surface, realizes automatic cleaning of the filter and stable airflow, and improves the operating efficiency and safety of the gas purification equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN HUANGTAI GAS STOVE CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-21
AI Technical Summary
After prolonged purification, existing gas purification equipment will accumulate a large amount of impurities and dust on the filter surface, affecting airflow and hindering subsequent purification processes.
The system employs a self-cleaning metal filter assembly. Through the cooperation of a limiting plate, spring, positioning pin, and positioning groove, the filter is stably positioned. It also utilizes a combination of fan blades and cleaning brushes for automatic cleaning. Combined with the magnetic attraction between the magnetic block and the filter box, the collection box is stably fixed and sealed to prevent impurities from leaking out.
It effectively prevents impurities from accumulating on the filter surface, ensures effective airflow, guarantees stable operation of the purification equipment, and enhances the equipment's self-cleaning and safety.
Smart Images
Figure CN224524266U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas purification equipment, and in particular to a self-cleaning metal filter assembly for gas purification equipment. Background Technology
[0002] With the booming development of industrial production and the continuous rise in urban gas demand, the quality requirements for coal gas, as a key energy source and chemical raw material, are becoming increasingly stringent. Coal gas is produced by the dry distillation of coal under high temperature and high pressure. Its main components include hydrogen, methane, carbon monoxide, and carbon dioxide. However, it is mixed with impurities such as hydrogen sulfide, ammonia, and nitrogen oxides, which not only reduce the calorific value of the coal gas but may also cause thorny problems such as equipment corrosion and catalyst poisoning. Against this background, coal gas purification equipment has emerged to deeply remove various harmful substances from coal gas and improve its quality through physical, chemical, and biological purification methods. Existing coal gas purification equipment relies on multi-level synergistic action to achieve purification. First, it captures suspended solid particles and droplets in the coal gas through a filter. Then, it uses a specific solvent or adsorbent to react with or adsorb harmful gas components in the coal gas. Finally, it uses a separation device to remove the reaction products or adsorbed saturated medium from the system, so that the purified coal gas meets the basic standards for subsequent use. However, after prolonged purification, existing gas purification equipment will accumulate a large amount of impurities and dust on the filter screen surface. If it is not cleaned in time, it will hinder the airflow of the filter screen and affect the subsequent purification process. Therefore, a self-cleaning metal filter screen assembly for gas purification equipment is proposed to solve the above problems. Utility Model Content
[0003] To overcome the above shortcomings, this utility model provides a self-cleaning metal filter assembly for gas purification equipment, which aims to improve the problem in the prior art where a large amount of impurities and dust adhere to the filter surface after long-term purification. If not cleaned in time, this will hinder the airflow of the filter and affect the subsequent purification process.
[0004] To achieve the above objectives, this utility model adopts the following technical solution: a self-cleaning metal filter assembly for a gas purification device, comprising a purification tank, a filter assembly at the top of the purification tank, a sealing assembly above the purification tank, a gas supply pipe fixedly connected to the top of the purification tank, the filter assembly comprising a filter box fixedly connected to the top of the purification tank, a partition fixedly connected inside the filter box, springs fixedly connected to the inner sides of the partition, a limit plate fixedly connected to one end of each spring, a positioning pin fixedly connected to the end of each limit plate away from the spring, a filter screen abutting between multiple positioning pins, a fan blade rotatably connected to the bottom of the filter screen, a cleaning brush fixedly connected to the side wall of the fan blade, at least one positioning groove evenly opened on the side wall of the filter screen, and a collection box slidably connected to the inner wall of the bottom of the filter box. As a further description of the above technical solution: The sealing assembly includes a magnetic block fixedly connected to the front side wall of the collection box, a sealing ring fixedly connected to the rear side wall of the magnetic block, a protruding strip fixedly connected to the rear side wall of the sealing ring, and a groove provided on the front side wall of the filter box. As a further description of the above technical solution: An air supply pipe is fixedly connected to the right side wall of the filter box, and the end of the air supply pipe near the filter box is located between the collection box and the filter screen. As a further description of the above technical solution: The limiting plate is slidably connected inside the partition, and the positioning pin is slidably connected inside the partition; As a further description of the above technical solution: The filter screen is slidably connected to the inner wall of the partition, and the positioning pin is slidably connected to the inside of the positioning groove; As a further description of the above technical solution: The cleaning brush abuts against the bottom of the filter screen; As a further description of the above technical solution: The magnetic block is slidably connected inside the filter box, and the magnetic block and the filter box are magnetically attracted to each other; As a further description of the above technical solution: The sealing ring is slidably connected inside the filter box, and the convex strip is slidably connected inside the groove.
[0005] This utility model has the following beneficial effects: 1. In this utility model, through the structural design of the filter assembly, the cooperation of the limiting plate, spring, positioning pin and positioning groove can accurately position the filter screen, ensuring that the filter screen maintains a stable position during operation and avoiding the filtration effect affected by factors such as shaking. The combination of fan blades and cleaning brush can automatically clean the filter screen. When gas passes through the filter screen, it will drive the fan blades to rotate, and the fan blades will drive the cleaning brush to rotate, cleaning the filter screen and effectively preventing impurities and dust from accumulating on the filter screen surface, ensuring the airflow effect of the filter screen. The collection box facilitates the collection and treatment of the cleaned impurities, which can be uniformly processed later. This solves the problem in the prior art that after a long period of purification, a large amount of impurities and dust will adhere to the filter screen surface, which will hinder the airflow effect of the filter screen and affect the subsequent purification process if not cleaned in time.
[0006] 2. In this utility model, the structural design of the sealing component and the magnetic attraction between the magnetic block and the filter box provide a stable and convenient way to fix the collection box, making it less prone to displacement. The sealing ring, raised strip, and groove effectively prevent impurities and gas from leaking through the gap between the collection box and the filter box, ensuring the cleanliness of the internal environment of the purification equipment and the safety of the overall working environment. The raised strip and groove also play a positioning and guiding role in the installation of the collection box, enabling the collection box to be accurately and smoothly installed into the filter box, thus enhancing the practicality of the self-cleaning metal filter assembly of the gas purification equipment. Attached Figure Description
[0007] Figure 1 This is a three-dimensional schematic diagram of the self-cleaning metal filter assembly of the gas purification equipment proposed in this utility model; Figure 2 This is a schematic diagram of the installation box for the self-cleaning metal filter assembly of the gas purification equipment proposed in this utility model. Figure 3 This is a schematic diagram of the structure of the filter assembly of the self-cleaning metal filter screen assembly of the gas purification equipment proposed in this utility model. Figure 4 This is a schematic diagram of the sealing component of the self-cleaning metal filter assembly of the gas purification equipment proposed in this utility model.
[0008] Legend: 1. Purification tank; 2. Filter assembly; 3. Sealing assembly; 4. Gas supply pipe; 5. Filter box; 6. Partition; 7. Spring; 8. Limiting plate; 9. Positioning pin; 10. Filter screen; 11. Fan blade; 12. Cleaning brush; 13. Positioning groove; 14. Collection box; 15. Magnetic block; 16. Sealing ring; 17. Raised strip; 18. Groove. Detailed Implementation
[0009] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0010] Reference Figures 1-3This utility model provides an embodiment of a self-cleaning metal filter assembly for a gas purification device, comprising a purification tank 1, which provides a stable space for the physical and chemical purification of gas. A filter assembly 2 is installed at the top of the purification tank 1 to filter impurities inside the gas. A sealing assembly 3 is installed above the purification tank 1 to seal the connection between the filter box 5 and the collection box 14, preventing gas leakage. A gas delivery pipe 4 is fixedly connected to the top of the purification tank 1, providing a guide for gas delivery. The filter assembly 2 includes a filter box 5 fixedly connected to the top of the purification tank 1, providing space for filtering gas impurities. A partition 6 is fixedly connected inside the filter box 5, providing a stable space for the filter screen 10. A fixed support is provided to isolate impurities from gas. Springs 7 are fixedly connected to the inside of the partition plate 6 around its perimeter. A limit plate 8 is fixedly connected to one end of each spring 7, providing stable elastic support for the limit plate 8 and allowing it to automatically reset after movement. A positioning pin 9 is fixedly connected to the end of the limit plate 8 away from the springs 7, allowing synchronous movement with the limit plate 8. The springs 7 drive the limit plate 8 to reset, and the limit plate 8, in turn, drives the positioning pins 9 to reset, thus fixing the filter screen 10. Multiple positioning pins 9 abut against the filter screen 10, which separates gas from impurities. A fan blade 11 is rotatably connected to the bottom of the filter screen 10, and a cleaning brush 12 is fixedly connected to the side wall of the fan blade 11. The flow of air can drive the fan blades 11 to rotate, and the fan blades 11 can drive the cleaning brush 12 to rotate synchronously. At least one positioning groove 13 is evenly provided on the side wall of the filter screen 10, providing a precise connection point between the filter screen 10 and the partition 6. A collection box 14 is slidably connected to the inner wall of the bottom of the filter box 5. The collection box 14 is responsible for collecting the impurities separated by the filter screen 10 for subsequent unified processing. A gas supply pipe 4 is fixedly connected to the right side wall of the filter box 5. The end of the gas supply pipe 4 near the filter box 5 is located between the collection box 14 and the filter screen 10, allowing the input gas to be filtered by the filter screen 10. A limiting plate 8 is slidably connected inside the partition 6, and a positioning pin 9 is slidably connected inside the partition 6. During the installation of the filter screen 10, it will squeeze... Pressing the positioning pin 9 causes the positioning pin 9 to drive the partition 6 into the partition 6. Subsequently, due to the elastic force of the spring 7, the limiting plate 8 and the positioning pin 9 slide inside the partition 6. The filter screen 10 is slidably connected to the inner wall of the partition 6. The filter screen 10 can be installed and removed by sliding inside the partition 6. The positioning pin 9 is slidably connected to the positioning groove 13. The positioning pin 9 can be fixed inside the positioning groove 13 to provide a stable foundation for the filter screen 10 to filter impurities in the gas. The cleaning brush 12 abuts against the bottom of the filter screen 10. When the cleaning brush 12 rotates with the fan blade 11, the cleaning brush 12 can stably clean the filter screen 10 to prevent the filter screen 10 from being blocked and affecting the airflow efficiency.
[0011] Reference Figure 1 , Figure 2 , Figure 4 The sealing assembly 3 includes a magnetic block 15 fixedly connected to the front wall of the collection box 14. The collection box 14 can move synchronously with the magnetic block 15. A sealing ring 16 is fixedly connected to the rear wall of the magnetic block 15. The sealing ring 16 can seal the connection between the collection box 14 and the filter box 5. A protruding strip 17 is fixedly connected to the rear wall of the sealing ring 16. A groove 18 is provided on the front wall of the filter box 5. The protruding strip 17 cooperates with the groove 18 to enhance the sealing effect between the collection box 14 and the filter box 5. The magnetic block 15 is slidably connected inside the filter box 5. In this part, the magnetic block 15 and the filter box 5 are magnetically attracted to each other, and the filter box 5 and the collection box 14 are firmly fixed by the magnetic attraction between the magnetic block 15 and the filter box 5. The sealing ring 16 is slidably connected inside the filter box 5. The sealing ring 16 can fill the gap between the filter box 5 and the collection box 14. The protrusion 17 is slidably connected inside the groove 18. The protrusion 17 enters the groove 18 to provide guidance for the collection box 14 to be installed into the filter box 5, and at the same time enhances the sealing effect to prevent gas leakage and affect the working environment.
[0012] Working Principle: During use, coal gas enters the filter box 5 through the gas supply pipe 4 on the right side of the filter box 5. It first passes through the filter screen 10, which separates the coal gas from impurities. The impurities in the coal gas are intercepted on the surface of the filter screen 10. The coal gas then passes through the filter screen 10 and through the gas supply pipe 4 at the top of the filter box 5 into the purification tank 1 for further purification. As the coal gas continues to flow, the airflow drives the fan blades 11 at the bottom of the filter screen 10 to rotate. The rotation of the fan blades 11 drives the cleaning brush 12 to rotate, cleaning the surface of the filter screen 10 and removing the attached impurities, ensuring the filtration effect of the filter screen 10. The cleaned impurities fall into the collection box 14. When it is necessary to remove and replace the filter screen 10, the collection box 14 is pulled out by overcoming the magnetic attraction between the magnet 15 and the filter box 5. Move the fan blade 11 to disengage the positioning pin 9 from the positioning groove 13, and then remove the filter screen 10. Next, install the new filter screen 10 into the partition 6. During the installation process, the positioning pin 9 is squeezed, causing it to move the limiting plate 8 within the partition 6 and compress the spring 7. When the filter screen 10 is in place, the spring 7 applies elastic force to the limiting plate 8, causing it to reset and enter the positioning groove 13, thus securing the filter screen 10. Then, push the collection box 14 into the filter box 5. During this process, the protrusion 17 enters the groove 18, and the sealing ring 16 enters the filter box 5. The collection box 14 is then secured by the magnetic attraction between the magnetic block 15 and the filter box 5, simultaneously sealing the connection between the filter boxes 5.
[0013] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 self-cleaning metal filter assembly for a gas purification device, comprising a purification tank (1), characterized in that: The purification tank (1) is provided with a filter assembly (2) at the top, a sealing assembly (3) is provided above the purification tank (1), and a gas supply pipe (4) is fixedly connected to the top of the purification tank (1). The filter assembly (2) includes a filter box (5) fixedly connected to the top of the purification tank (1). A partition (6) is fixedly connected inside the filter box (5). Springs (7) are fixedly connected to the four sides of the partition (6). A limiting plate (8) is fixedly connected to one end of each spring (7). A positioning pin (9) is fixedly connected to the end of the limiting plate (8) away from the spring (7). A filter screen (10) is abutted between multiple positioning pins (9). A fan blade (11) is rotatably connected to the bottom of the filter screen (10). A cleaning brush (12) is fixedly connected to the side wall of the fan blade (11). At least one positioning groove (13) is evenly opened on the side wall of the filter screen (10). A collection box (14) is slidably connected to the inner wall of the bottom of the filter box (5).
2. The self-cleaning metal filter assembly of the gas purification equipment according to claim 1, characterized in that: The sealing assembly (3) includes a magnetic block (15) fixedly connected to the front side wall of the collection box (14), a sealing ring (16) fixedly connected to the rear side wall of the magnetic block (15), a protrusion (17) fixedly connected to the rear side wall of the sealing ring (16), and a groove (18) provided on the front side wall of the filter box (5).
3. The self-cleaning metal filter assembly of the gas purification equipment according to claim 1, characterized in that: An air supply pipe (4) is fixedly connected to the right side wall of the filter box (5). One end of the air supply pipe (4) near the filter box (5) is located between the collection box (14) and the filter screen (10).
4. The self-cleaning metal filter assembly of the gas purification equipment according to claim 1, characterized in that: The limiting plate (8) is slidably connected inside the partition plate (6), and the positioning pin (9) is slidably connected inside the partition plate (6).
5. The self-cleaning metal filter assembly of the gas purification equipment according to claim 1, characterized in that: The filter screen (10) is slidably connected to the inner wall of the partition (6), and the positioning pin (9) is slidably connected to the inside of the positioning groove (13).
6. The self-cleaning metal filter assembly of the gas purification equipment according to claim 1, characterized in that: The cleaning brush (12) abuts against the bottom of the filter (10).
7. The self-cleaning metal filter assembly of the gas purification equipment according to claim 2, characterized in that: The magnetic block (15) is slidably connected inside the filter box (5), and the magnetic block (15) and the filter box (5) are magnetically attracted to each other.
8. The self-cleaning metal filter assembly of the gas purification equipment according to claim 2, characterized in that: The sealing ring (16) is slidably connected inside the filter box (5), and the convex strip (17) is slidably connected inside the groove (18).