Self-cleaning gas filter

Abstract

The utility model discloses a kind of self-cleaning gas filters, it is related to gas purification equipment technical field, including: shell, sealing cover, rotating part and filter core, the top of shell is provided with opening, the bottom of shell is provided with sample gas inlet port;Sealing cover is connected with the top of shell to be able to close opening, sealing cover is provided with sample gas outlet port;The fixed end of rotating part is sealedly connected with the inner wall of shell, and the rotating end of rotating part is sealedly connected with the fixed end of rotating part;The top end of filter core is fixedly connected with the rotating end of rotating part, filter core is used to filter the gas sample that enters the shell from sample gas inlet port and is discharged from shell by sample gas outlet port, and gas sample can drive filter core to rotate and generate centrifugal force in the process of passing through filter core, to separate the impurities filtered by filter core and filter core, simple structure, convenient to use, effectively solve filter core blockage problem, significantly prolong the service life of filter core, and ensure that gas filtration process can continuously and stably run.

Description

Technical Field

[0001] This utility model relates to the field of gas purification equipment technology, and in particular to a self-cleaning gas filter. Background Technology

[0002] In the field of gas filtration, traditional gas filters primarily rely on filter elements to intercept particulate matter in the gas. However, after prolonged use, filter elements are prone to clogging, which significantly increases the pressure drop and drastically reduces filtration efficiency. To maintain normal operation, frequent shutdowns are necessary to replace or clean the filter elements, increasing operating costs and disrupting the continuity of production or testing.

[0003] Current filter cleaning technologies have several problems. For example, while backflushing is widely used, it consumes a lot of energy and is not very effective at removing sticky particles. Mechanical scraping can damage the surface structure of the filter element while cleaning it, reducing its lifespan. Some gas backflushing cleaning methods are ineffective, failing to provide a comprehensive and efficient backflushing of the filter element. Moreover, cleaning the filter element often requires manual removal, which is inconvenient and inefficient.

[0004] Therefore, developing a high-efficiency, low-consumption, and maintenance-free self-cleaning gas filter has become an urgent problem to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to provide a self-cleaning gas filter to solve the problems existing in the prior art. It has a simple structure, is easy to use, effectively solves the problem of filter element clogging, significantly extends the service life of the filter element, and ensures that the gas filtration process can operate continuously and stably.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a self-cleaning gas filter, comprising: a shell, a sealing cover, a rotating component, and a filter element. The top of the shell has an opening, and the bottom of the shell has a sample gas inlet. The sealing cover is detachably fixed to the top of the shell to close the opening, and the sealing cover has a sample gas outlet. The fixed end of the rotating component is sealed to the inner wall of the shell, and the rotating end of the rotating component is sealed to the fixed end of the rotating component. The top of the filter element is fixed to the rotating end of the rotating component. The filter element is used to filter the gas sample entering the shell from the sample gas inlet and then discharge it from the shell through the sample gas outlet. As the gas sample passes through the filter element, it can drive the filter element to rotate and generate centrifugal force, thereby separating the impurities filtered by the filter element from the filter element.

[0008] Preferably, it further includes a purge gas inlet, which is disposed on the side wall of the housing and communicates with the space between the filter element and the housing, so as to introduce high-pressure gas and accelerate the rotation of the filter element.

[0009] Preferably, the filter element is made of multi-layer metal wire mesh.

[0010] Preferably, the filter element includes a barrel and multiple fan-shaped rotating blades. The cross-sectional area of ​​the top of the barrel is larger than that of the bottom. The top of the barrel is sealed to the rotating end of the rotating component. Each fan-shaped rotating blade is integrally disposed on the outer wall of the barrel to drive the barrel to rotate under the blowing of the gas sample.

[0011] Preferably, the fan-shaped rotating wing is arranged along the entire length of the side wall of the barrel, and the fan-shaped rotating wing has a structure that is wider at the top and narrower at the bottom.

[0012] Preferably, each of the fan-shaped rotating blades is inclined to the vertical direction, and the inclination angle of the fan-shaped rotating blades to the vertical direction is 25° to 35°.

[0013] Preferably, the rotating component is a high-speed bearing, the inner wall of the housing is provided with a first embedding station, the outer ring of the high-speed bearing is sealed and embedded in the first embedding station, the inner ring of the high-speed bearing is provided with a second embedding station, and the top of the filter element is sealed and embedded in the second embedding station.

[0014] Preferably, the outer casing is made of stainless steel.

[0015] Preferably, it also includes a sealing ring, which is disposed at the connection between the sealing cover and the outer shell.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] This invention provides a self-cleaning gas filter that enables gas to form an effective flow path inside the filter. The centrifugal force generated by the rotation of the filter element effectively reduces the adhesion of impurities on the surface of the filter element, extends the service life of the filter element, and reduces the cost of frequent filter element replacement. Furthermore, it ensures the continuity of gas filtration without shutting down the machine, providing a guarantee for the normal and stable operation of subsequent related equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the self-cleaning gas filter provided by this utility model;

[0020] Figure 2 A schematic diagram of the filter element embedding and rotating component in the self-cleaning gas filter provided by this utility model;

[0021] Figure 3 This is a schematic diagram of the filter element in the self-cleaning gas filter provided by this utility model.

[0022] Figure 4 A schematic diagram of the outer shell of the self-cleaning gas filter provided by this utility model;

[0023] Figure 5 A partial cross-sectional view of the rotating component in the self-cleaning gas filter provided by this utility model;

[0024] Figure 6 A schematic diagram of the sealing cap in the self-cleaning gas filter provided by this utility model;

[0025] In the diagram: 1. Outer shell; 11. Sample gas inlet; 12. Purge gas inlet; 2. Sealing cap; 3. Rotating component; 4. Filter element; 41. Barrel body; 42. Fan-shaped rotating blade. Detailed Implementation

[0026] 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.

[0027] The purpose of this invention is to provide a self-cleaning gas filter to solve the problems existing in the prior art. It has a simple structure, is easy to use, effectively solves the problem of filter element clogging, significantly extends the service life of the filter element, and ensures that the gas filtration process can operate continuously and stably.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] This embodiment provides a self-cleaning gas filter, such as... Figures 1-6As shown, the device includes: a housing 1, a sealing cap 2, a rotating component 3, and a filter element 4. The housing 1 has an opening at its top and a sample gas inlet 11 at its bottom. The sealing cap 2 is detachably fixed to the top of the housing 1 to close the opening, and has a sample gas outlet. The fixed end of the rotating component 3 is sealed to the inner wall of the housing 1, and the rotating end of the rotating component 3 is sealed to the fixed end. The top end of the filter element 4 is fixed to the rotating end of the rotating component 3. The filter element 4 is used to filter the gas sample entering the housing 1 from the sample gas inlet 11. After filtration, the gas sample exits through the sample gas outlet of the outer casing 1. As the gas sample passes through the filter element 4, it drives the filter element 4 to rotate and generate centrifugal force, thereby separating the impurities filtered by the filter element 4 from the filter element 4. This structural design allows the gas to form an effective flow path inside the filter. The centrifugal force generated by the rotation of the filter element 4 effectively reduces the adhesion of impurities on the surface of the filter element 4, extends the service life of the filter element 4, and reduces the cost of frequent replacement of the filter element 4. Furthermore, it ensures the continuity of gas filtration without shutting down the machine, providing a guarantee for the normal and stable operation of subsequent related equipment.

[0031] In a preferred embodiment, a purge gas inlet 12 is further included. The purge gas inlet 12 is disposed on the side wall of the housing 1 and communicates with the space between the filter element 4 and the housing 1 to introduce high-pressure gas and accelerate the rotation of the filter element 4. The purge gas inlet 12 is provided so that when the filter element 4 needs to be cleaned, the high-pressure gas can be introduced to accelerate the rotation of the filter element 4, enhance the centrifugal force, and more effectively separate and remove impurities from the surface of the filter element 4, further improving the self-cleaning effect and efficiency, and ensuring that the filter always maintains good filtration performance.

[0032] In a preferred embodiment, the filter element 4 is made of multi-layer metal wire mesh. The multi-layer metal wire mesh filter element 4 has a high interception capability, which can effectively capture various impurities and particulate matter in the gas, improve the accuracy and quality of gas filtration, and at the same time, the metal wire mesh material has a certain strength and toughness, ensuring the stability of the filter element 4 during long-term use.

[0033] In a preferred embodiment, the filter element 4 includes a barrel 41 and multiple fan-shaped rotating blades 42. The cross-sectional area of ​​the top of the barrel 41 is larger than that of the bottom. The top of the barrel 41 is sealed to the rotating end of the rotating component 3. Each fan-shaped rotating blade 42 is integrally disposed on the outer wall of the barrel 41 to drive the barrel 41 to rotate under the blowing of the gas sample. This unique structural design allows the gas to be guided and accelerated by the fan-shaped rotating blades 42 when it comes into contact with the filter element 4, causing the barrel 41 to rotate, enhancing the gas turbulence, and further utilizing the centrifugal force to separate impurities. At the same time, it optimizes the gas flow path inside the filter element 4, making filtration more thorough and efficient.

[0034] In a preferred embodiment, the fan-shaped rotating fin 42 is arranged along the side wall of the barrel 41, and the fan-shaped rotating fin 42 has a structure that is wider at the top and narrower at the bottom. The length of the fan-shaped rotating fin 42 increases the contact area with the gas and improves the effect on the airflow. The structure design of being wider at the top and narrower at the bottom helps to form a special airflow channel during the gas flow process, further enhancing the separation of impurities and improving the self-cleaning ability and filtration efficiency.

[0035] In a preferred embodiment, each fan-shaped rotating blade 42 is inclined to the vertical direction, and the inclination angle between the fan-shaped rotating blade 42 and the vertical direction is 25° to 35°. The specific inclination angle optimizes the flow direction and velocity distribution of gas around the filter element 4, so that the gas can interact more fully with the fan-shaped rotating blade 42, thereby producing a more effective centrifugal separation effect on impurities during rotation, which is beneficial to improving the stability and reliability of the self-cleaning function.

[0036] In a preferred embodiment, the rotating component 3 is a high-speed bearing. The inner wall of the housing 1 is provided with a first embedding position. The outer ring of the high-speed bearing is sealed and embedded in the first embedding position, and the inner ring of the high-speed bearing is provided with a second embedding position. The top of the filter element 4 is sealed and embedded in the second embedding position. The high-speed bearing ensures that the filter element 4 can rotate smoothly and at high speed. The sealing and embedding not only ensures the sealing of the entire filter and prevents gas leakage from affecting the filtration effect, but also improves the stability of the component connection, ensures the reliability and stability of the equipment during operation, and reduces the failure rate caused by loosening and other problems.

[0037] In a preferred embodiment, the outer shell 1 is made of stainless steel. Stainless steel outer shell 1 has good corrosion resistance, can adapt to different working environments, extends the overall service life of the device, and reduces the cost and inconvenience of replacing the outer shell 1 due to corrosion. At the same time, stainless steel has a certain mechanical strength, providing reliable protection and support for internal components and ensuring the stability of the overall structure of the device.

[0038] In a preferred embodiment, the self-cleaning gas filter further includes a sealing ring, which is disposed at the connection between the sealing cover 2 and the outer shell 1. The sealing ring effectively enhances the sealing performance of the connection between the sealing cover 2 and the outer shell 1, prevents gas leakage at this location, and ensures that the gas inside the filter can be filtered and flow along a predetermined path, thereby improving filtration efficiency and quality.

[0039] Example 2

[0040] This embodiment also provides a method for using a self-cleaning gas filter as described in Embodiment 1, including the following steps:

[0041] How to use a self-cleaning gas filter

[0042] Installation phase

[0043] The outer ring of the high-speed bearing is sealed and embedded in the first pre-set embedding position on the inner wall of the housing 1 to ensure a firm connection and good sealing.

[0044] The top of filter element 4 is sealed and embedded in the second embedding position of the inner ring of the high-speed bearing to ensure that filter element 4 can rotate smoothly and at high speed with the high-speed bearing.

[0045] Install the sealing ring at the connection between the sealing cover 2 and the outer shell 1 to enhance the sealing performance of this part.

[0046] The sealing cap 2 is detachably and securely connected to the top of the outer casing 1, sealing the top opening of the outer casing 1 to ensure a secure connection and that the sample gas outlet is correctly positioned.

[0047] Sampling stage

[0048] The gas sample to be filtered is introduced into the housing 1 through the sample gas inlet 11.

[0049] As the gas flows in, it forms an airflow, which drives the specially structured filter element 4 (a design with a barrel 41 and a fan-shaped rotating fin 42) to rotate. Because the top of the filter element 4 is inlaid with a sliding high-speed bearing, the filter element 4 can rotate smoothly and at high speed.

[0050] During rotation, impurities in the gas are thrown off the surface of filter element 4 by centrifugal force and will not adhere to filter element 4 in large quantities.

[0051] After being effectively filtered by filter element 4, the gas flows out from the sample gas outlet at the top of the sealing cover 2 of the outer shell 1, providing clean sample gas for subsequent analysis and testing equipment.

[0052] Blow-and-clean stage

[0053] When the filter has been running for a period of time and it is determined that the filter element 4 needs to be cleaned to ensure its performance, high-pressure purging gas is blown in from the purging gas inlet 12 on the upper side of the housing 1.

[0054] After the high-pressure purging gas enters the filter, it interacts with the fan blades of the filter element 4. The special shape of the fan-shaped rotating fins 42 achieves a guiding effect, causing the filter element 4 to rotate at high speed under the push of the high-pressure gas.

[0055] During high-speed rotation, impurities that may have been attached to the surface of filter element 4 will be separated by centrifugal force and the scouring effect of high-speed airflow, thus achieving the self-cleaning purpose of filter element 4. The entire self-cleaning process does not require stopping the machine or disassembling filter element 4.

[0056] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A self-cleaning gas filter, characterized in that: include: The outer casing has an opening at its top and a sample gas inlet at its bottom. A sealing cap, which is detachably fixed to the top of the outer casing to close the opening, and the sealing cap is provided with a sample gas outlet. A rotating component, wherein the fixed end of the rotating component is sealed to the inner wall of the outer casing, and the rotating end of the rotating component is sealed to the fixed end of the rotating component; as well as The filter element has its top end fixedly connected to the rotating end of the rotating component. The filter element is used to filter the gas sample that enters the housing from the sample gas inlet and then discharges it from the housing through the sample gas outlet. The gas sample can drive the filter element to rotate and generate centrifugal force during the process of passing through the filter element, thereby separating the impurities filtered by the filter element from the filter element.

2. The self-cleaning gas filter according to claim 1, characterized in that: It also includes a purge gas inlet, which is located on the side wall of the housing and communicates with the space between the filter element and the housing to introduce high-pressure gas and accelerate the rotation of the filter element.

3. The self-cleaning gas filter according to claim 2, characterized in that: The filter element is made of multi-layer metal wire mesh.

4. The self-cleaning gas filter according to claim 3, characterized in that: The filter element includes a barrel and multiple fan-shaped rotating blades. The cross-sectional area of ​​the top of the barrel is larger than that of the bottom. The top of the barrel is sealed to the rotating end of the rotating component. Each fan-shaped rotating blade is integrally disposed on the outer wall of the barrel to drive the barrel to rotate under the blowing of the gas sample.

5. The self-cleaning gas filter according to claim 4, characterized in that: The fan-shaped rotating wing is arranged along the entire length of the side wall of the barrel, and the fan-shaped rotating wing has a structure that is wider at the top and narrower at the bottom.

6. The self-cleaning gas filter according to claim 5, characterized in that: Each of the aforementioned fan-shaped rotating blades is inclined to the vertical direction, and the inclination angle of the fan-shaped rotating blades to the vertical direction is 25° to 35°.

7. The self-cleaning gas filter according to claim 6, characterized in that: The rotating component is a high-speed bearing. The inner wall of the housing is provided with a first embedding station. The outer ring of the high-speed bearing is sealed and embedded in the first embedding station. The inner ring of the high-speed bearing is provided with a second embedding station. The top of the filter element is sealed and embedded in the second embedding station.

8. The self-cleaning gas filter according to claim 7, characterized in that: The outer casing is made of stainless steel.

9. The self-cleaning gas filter according to claim 8, characterized in that: It also includes a sealing ring, which is disposed at the connection between the sealing cover and the outer shell.

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