A filter housing

Abstract

The utility model relates to air filtration technical field, concretely relates to a filter box. The filter box includes casing, filter and inflation seal strip, the inside of casing has filter cavity, and the filter is in filter cavity, one end of casing has the air inlet that communicates with filter cavity, and the other end has the exhaust port that communicates with filter cavity, and the lateral wall of casing has the installation port that allows filter to go out, the seal groove is in filter cavity, and the inflation seal strip is in seal groove, and the inflation seal strip can form the fixation and positioning of filter by extruding filter to form the seal under the inflation state, the utility model discloses inflation seal strip, can be compacted positioning to filter while sealing filter in the inside of casing, thereby realizing positioning, guaranteeing the stability after filter installation, guaranteeing the sealing performance of filter, avoiding gas from the shell leakage, improve the overall performance of filter box.

Description

Technical Field

[0001] This utility model relates to the field of air filtration technology, and more specifically, to a filter housing. Background Technology

[0002] In existing industrial gas filtration systems, the filter screen is often fixed inside the filter housing using bolts or similar methods. During the fixing process, the position of the filter screen needs to be adjusted to ensure its stability and the sealing between the top and bottom. The adjustment process is quite cumbersome, and if the sealing is insufficient, it can easily affect the performance of the filter housing. Summary of the Invention

[0003] The purpose of this utility model is to provide a filter housing that can solve the above-mentioned technical problems.

[0004] This utility model provides a filter box, including a shell, a filter and an inflatable sealing strip;

[0005] The housing has a filter chamber inside, and the filter is disposed inside the filter chamber;

[0006] One end of the housing has an air inlet communicating with the filter chamber, and the other end has an exhaust port communicating with the filter chamber. The side wall of the housing is provided with an installation port that allows the filter to enter and exit.

[0007] The filter chamber is provided with an annular sealing groove, and the inflatable sealing strip is disposed in the sealing groove. When inflated, the inflatable sealing strip can form a seal by squeezing the filter, while simultaneously fixing and positioning the filter.

[0008] In an optional embodiment, a pad is provided at the opening of the sealing groove;

[0009] One side of the pad is positioned corresponding to the opening of the sealing groove, and the other side is fixedly connected to the end of the filter.

[0010] In an optional embodiment, the filter has a pull-out block at one end near the mounting port, which can pull the filter out of the filter chamber.

[0011] In an optional embodiment, a cover plate is also included, which is disposed at the mounting opening for sealing the mounting opening;

[0012] The cover plate is detachably connected to the housing.

[0013] In an optional embodiment, the detachable connection is at least one of bolted connection, snap-fit, or transition fit.

[0014] In an optional embodiment, the housing is provided with an upper connecting end and a lower connecting end at both ends for connecting with other components.

[0015] In an optional embodiment, the upper connecting end includes a first insulated reducing pipe, a first internal transition section, and an upper clamp joint;

[0016] The first heat-insulating reducer is tapered, with its larger end connected to the outer wall of the shell and its smaller end connected to the outer edge of the upper clamp joint.

[0017] The first internal transition section is tapered, with the large end of the first internal transition section connected to the exhaust port on the housing, and the small end of the first internal transition section connected to the inner hole of the upper clamp connector.

[0018] A sealed upper insulation cavity is formed between the first internal transition section and the first insulation reducer.

[0019] In an optional embodiment, the lower connecting end includes a second insulated reducer, a second internal transition section, and a lower clamp joint;

[0020] The second heat-insulating reducer is tapered. The larger end of the second heat-insulating reducer is connected to the outer wall of the shell, and the smaller end of the second heat-insulating reducer is connected to the outer edge of the lower clamp joint.

[0021] The second internal transition section is tapered, with the larger end of the second internal transition section connected to the air inlet on the housing, and the smaller end of the second internal transition section connected to the inner hole of the lower clamp connector;

[0022] A sealed lower insulation cavity is formed between the second internal transition section and the second insulation reducer.

[0023] In an optional embodiment, a heat-insulating partition is provided inside the filter chamber, and the heat-insulating partition and the inner wall of the housing form a heat-insulating cavity for the filter.

[0024] In an optional embodiment, a differential pressure gauge is provided on the outside of the housing to measure the pressure difference across the filter.

[0025] The beneficial effects of this utility model embodiment are:

[0026] The air-filled sealing strip inside the sealing groove not only seals the filter inside the housing but also presses and positions it. This achieves both positioning, ensuring the stability of the filter after installation, and sealing performance, preventing gas from leaking out of the housing and improving the overall performance of the filter housing. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a front view of the filter housing provided in an embodiment of the present utility model;

[0029] Figure 2 for Figure 1 AA section view;

[0030] Figure 3 A three-dimensional structural diagram of the filter box is provided for the embodiments of this utility model;

[0031] Figure 4 A three-dimensional structural diagram of the bottom plate of the filter box provided in an embodiment of this utility model;

[0032] Figure 5 This is a three-dimensional structural diagram of the pull-out block of the filter box provided in an embodiment of the present utility model.

[0033] Icons: 1-Shell; 101-Side plate; 102-Bottom plate; 103-Sealing groove; 104-Air inlet; 105-Exhaust port; 106-Top plate; 107-Filter chamber;

[0034] 2-Cover plate;

[0035] 3-Upper connection end; 301-First insulated reducer; 302-First internal transition section; 303-Upper insulation cavity; 304-Upper clamp joint;

[0036] 4-Lower connection end; 401-Second insulated reducer; 402-Second internal transition section; 403-Lower insulation cavity; 404-Lower clamp joint;

[0037] 5- Mounting bracket;

[0038] 6-Inflatable sealing strip;

[0039] 7-Filter;

[0040] 8-Plate;

[0041] 9 - Pull out the block; 901 - Pull out the slot;

[0042] 10-Insulated partition;

[0043] 11-Differential pressure gauge. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0049] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0050] The following is combined with Figures 1-5 The following describes some embodiments of the present invention in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0051] This utility model provides a filter housing, such as Figure 1 , Figure 2 and Figure 3 As shown, the device includes a housing 1, a filter 7, and an inflatable sealing strip 6. The housing 1 has a filter chamber 107 inside, and the filter 7 is disposed in the filter chamber 107. One end of the housing 1 has an air inlet 104 communicating with the filter chamber 107, and the other end has an exhaust port 105 communicating with the filter chamber 107. The side wall of the housing 1 is provided with an installation port that allows the filter 7 to enter and exit. The filter chamber 107 is provided with an annular sealing groove 103, and the inflatable sealing strip 6 is disposed in the sealing groove 103. When inflated, the inflatable sealing strip 6 can form a seal by compressing the filter 7, while simultaneously fixing and positioning the filter 7.

[0052] In this embodiment, the housing 1 is a cuboid or cube structure with a filter chamber 107 inside. It is made of high-strength, corrosion-resistant metal materials (such as stainless steel, alloy steel, etc.) to ensure the service life and reliability of the housing 1 in industrial environments and to adapt to the filtration requirements of different gas media.

[0053] Specifically, in this embodiment, the housing 1 is composed of a bottom plate 102, a top plate 106 and multiple side plates 101. The bottom plate 102 has an air inlet 104 and a sealing groove 103, and the top plate 106 has an exhaust port 105. There are three side plates 101, which together with the cover plate 2 form a box structure. The upper and lower ends are sealed by the top plate 106 and the bottom plate 102 to form a complete sealed box.

[0054] In this embodiment, filter 7 is placed inside filter chamber 107 to filter industrial gas, intercepting impurities, dust, etc., in the gas to ensure the cleanliness of the output gas. Filter 7 is a cuboid or cube, or it can be designed as a cylindrical shape with different shapes. It mainly has filter screens facing the air inlet 104 and the exhaust port 105, and the surrounding side walls are sealed to prevent gas leakage from the side walls.

[0055] Specifically, in this embodiment, the filter material of filter 7 is a high-efficiency filter material (such as polyester fiber, glass fiber, etc.), which has good filtration performance, chemical stability and mechanical strength, and can intercept impurity particles in the gas while ensuring the flow of gas.

[0056] In this embodiment, a sealing groove 103 is provided at the bottom of the filter chamber 107, in the direction of the air inlet 104. The sealing groove 103 surrounds the air inlet 104 and corresponds to the end of the filter 7. An inflatable sealing strip 6 is provided inside the sealing groove 103. In the uninflated state, the inflatable sealing strip 6 retracts into the sealing groove 103. The filter 7 has a movable gap in the filter chamber 107 and can freely enter and exit through the installation port. In the inflated state, the inflatable sealing strip 6 abuts against the end of the filter 7 and can apply pressure to the filter 7. This ensures the sealing effect and can also compress and limit the filter 7, so that the filter 7 is fixed in the filter chamber 107 and cannot move. This avoids the cumbersome adjustment process of the traditional bolt fixing method, ensures the accuracy and stability of the filter 7 installation, and effectively prevents gas leakage.

[0057] Specifically, in this embodiment, the inflatable sealing strip 6 is made of rubber material with good elasticity, wear resistance and aging resistance (such as EPDM rubber, silicone rubber, etc.) to ensure that the inflatable sealing strip 6 can maintain good sealing performance under frequent inflation and deflation and long-term compression conditions.

[0058] Specifically, in this embodiment, the cross-sectional shape of the inflatable sealing strip 6 is circular or square, and its outer diameter is designed according to the size of the sealing groove 103 to ensure that the filter 7 can be fully squeezed after inflation to achieve the sealing and fixing functions.

[0059] Specifically, in this embodiment, the working inflation pressure range of the inflatable sealing strip 6 is 0.1MPa-0.5MPa. Within this pressure range, it can stably compress and fix the filter 7 without damaging the filter 7 or the sealing groove 103 due to excessive pressure.

[0060] In an optional embodiment, a pad 8 is provided at the opening of the sealing groove 103; one side of the pad 8 is provided corresponding to the opening of the sealing groove 103, and the other side is fixedly connected to the end of the filter 7.

[0061] In this embodiment, this arrangement can effectively increase the connection stability between the filter 7 and the housing 1 and enhance the sealing performance.

[0062] Specifically, in this embodiment, the material of the gasket 8 can be a metal or non-metal composite material, determined according to the actual sealing requirements and the connection form of the filter 7 end. Its size matches the opening of the sealing groove 103 and the end of the filter 7, ensuring that the sealing groove 103 is sealed while being firmly connected to the end of the filter 7.

[0063] In an optional embodiment, the filter 7 has a pull-out block 9 at one end near the mounting port, which can drive the filter 7 to detach from the filter chamber 107.

[0064] In this embodiment, the end of the filter 7 near the installation port is equipped with a pull-out block 9, which makes it easy for the operator to pull the filter 7 out of the filter chamber 107, simplifying the disassembly process of the filter 7 and facilitating the regular replacement, cleaning or maintenance of the filter 7.

[0065] Specifically, in this embodiment, the shape of the pull-out block 9 is as follows: Figure 5 As shown, one end of the pull-out block 9 is flat and can be attached to the outer wall of the filter 7. The pull-out block 9 and the filter 7 can be fixedly connected by welding, bonding, snap-fitting, bolting and other methods.

[0066] More specifically, in this embodiment, the pull-out block 9 has a pull-out groove 901 for placing fingers or pull-out tools. When it is necessary to pull the filter 7 out of the filter chamber 107, fingers or pull-out tools such as collars are placed in the pull-out groove 901, and a pulling force is applied to the filter 7 to pull the filter 7 out of the filter chamber 107 through the installation port.

[0067] Specifically, in this embodiment, the material is metal (such as stainless steel, carbon steel, etc.), which has sufficient strength and rigidity to facilitate the operator's grip and application of force.

[0068] In an optional embodiment, a cover plate 2 is also included, which is disposed at the mounting opening and used to seal the mounting opening; the cover plate 2 is detachably connected to the housing 1.

[0069] In this embodiment, a cover plate 2 is provided at the installation port. The cover plate 2 provides a certain degree of protection for the filter 7 inside the housing 1, preventing external impurities from entering the filter chamber 107 and avoiding damage to components such as the air-filled sealing strip 6 and the filter 7. This improves the overall service life and enhances the aesthetics of the filter housing.

[0070] In this embodiment, the cover plate 2 and the housing 1 are detachably connected, which facilitates the installation and removal of the filter 7.

[0071] Specifically, in this embodiment, the material of the cover plate 2 matches that of the housing 1, typically using the same metal material to ensure the strength and corrosion resistance of the cover plate 2, forming an integral sealing structure after being connected to the housing 1. The external dimensions of the cover plate 2 are adapted to the dimensions of the mounting opening, ensuring that the cover plate 2 can completely seal the mounting opening, and is tightly connected to the housing 1 through a detachable connection.

[0072] Specifically, in this embodiment, the cover plate 2 is a square plate.

[0073] It is understandable that cover plate 2 is a non-essential installation component. During use, cover plate 2 can be omitted, as long as the airtightness of filter 7 can be guaranteed during use.

[0074] In an optional embodiment, the detachable connection is at least one of bolted connection, snap-fit, or transition fit.

[0075] Specifically, the detachable connection method can be selected from at least one of bolt connection, snap-fit ​​or transition fit, which makes it easy to flexibly choose the installation and disassembly method according to the actual working conditions and operation requirements, and improves the ease of use of the filter box.

[0076] It is understandable that the detachable connection can be one or more of the above types, but it is not limited to the above types. It can also be other types of detachable connections, such as pin connections, plug connections, etc., as long as the cover plate 2 can be stably set at the mounting port of the housing 1.

[0077] In an optional embodiment, the housing 1 is provided with an upper connecting end 3 and a lower connecting end 4 at both ends for connecting with other components.

[0078] In this embodiment, the upper connection end 3 is used to connect to the subsequent gas-using equipment, and the lower connection end 4 is used to connect to the heating equipment, which heats the gas before it enters the filter box.

[0079] In an optional embodiment, the upper connecting end 3 includes a first thermally insulated reducing pipe 301, a first internal transition section 302, and an upper clamping joint 304; the first thermally insulated reducing pipe 301 is tapered, with its larger end connected to the outer wall of the housing 1 and its smaller end connected to the outer edge of the upper clamping joint 304; the first internal transition section 302 is tapered, with its larger end connected to the exhaust port 105 on the housing 1 and its smaller end connected to the inner hole of the upper clamping joint 304; a sealed upper thermally insulated cavity 303 is formed between the first internal transition section 302 and the first thermally insulated reducing pipe 301.

[0080] In this embodiment, the first heat-insulating reducer 301 is made of the same material as the shell 1 and adopts a tapered structure design. Its large end inner diameter matches the diameter of the connection between the large end and the outer wall of the shell 1, and its small end outer diameter is adapted to the outer edge connection size of the upper clamp connector 304.

[0081] Specifically, in this embodiment, the wall thickness of the first heat-insulating reducer 301 is generally between 2mm and 3mm, and the length is determined according to the structure of the shell 1 and the connection requirements.

[0082] In this embodiment, the first internal transition section 302 also adopts a tapered structure, and its material is the same as that of the housing 1. The inner diameter of the large end matches the size of the exhaust port 105 on the housing 1, and the inner diameter of the small end matches the connection size of the inner hole of the upper clamp connector 304. The wall thickness of the first internal transition section 302 is between 2mm and 3mm, and its length is designed according to the actual connection requirements.

[0083] In this embodiment, the upper clamp connector 304 is made of metal (such as stainless steel, carbon steel, etc.), which has good connection reliability and sealing performance.

[0084] In this embodiment, the cavity formed by the first heat-insulating reducer 301, the first internal transition section 302, the top plate 106, and the upper clamp joint 304 is the upper heat-insulating cavity 303. By setting the upper heat-insulating cavity 303, the gas temperature change is reduced and the gas output temperature is guaranteed.

[0085] In an optional embodiment, the lower connecting end 4 includes a second heat-insulating reducer 401, a second internal transition section 402, and a lower clamping joint; the second heat-insulating reducer 401 is tapered, with its larger end connected to the outer wall of the housing 1 and its smaller end connected to the outer edge of the lower clamping joint; the second internal transition section 402 is tapered, with its larger end connected to the air inlet 104 on the housing 1 and its smaller end connected to the inner hole of the lower clamping joint; a sealed lower heat-insulating cavity is formed between the second internal transition section 402 and the second heat-insulating reducer 401.

[0086] In this embodiment, the material of the second heat-insulating reducer 401 is the same as that of the shell 1, and it adopts a tapered structure design. The inner diameter of its large end matches the diameter of the connection between the large end and the outer wall of the shell 1, and the outer diameter of its small end is adapted to the outer edge connection size of the upper clamp connector 304.

[0087] Specifically, in this embodiment, the wall thickness of the second heat-insulating reducer 401 is generally between 2mm and 3mm, and the length is determined according to the structure of the shell 1 and the connection requirements.

[0088] In this embodiment, the second internal transition section 402 also adopts a tapered structure, and its material is the same as that of the housing 1. The inner diameter of the large end matches the size of the exhaust port 105 on the housing 1, and the inner diameter of the small end matches the connection size of the inner hole of the upper clamp connector 304. The wall thickness of the second internal transition section 402 is between 2mm and 3mm, and its length is designed according to the actual connection requirements.

[0089] In this embodiment, the upper clamp connector 304 is made of metal (such as stainless steel, carbon steel, etc.), which has good connection reliability and sealing performance.

[0090] In this embodiment, the tapered dimension parameters of the second thermal insulation reducer 401 are different from those of the first thermal insulation reducer 301, and the tapered dimension parameters of the second internal transition section 402 are different from those of the first internal transition section 302.

[0091] In this embodiment, the cavity formed by the second heat-insulating reducer 401, the second internal transition section 402, the base plate 102, and the lower clamp joint is the lower heat-insulating cavity. By setting the lower heat-insulating cavity, the gas temperature change is reduced, and the gas input temperature is guaranteed.

[0092] In an optional embodiment, a heat-insulating partition 10 is provided inside the filter chamber 107, and the heat-insulating partition 10 and the inner wall of the housing 1 form the heat-insulating cavity of the filter 7.

[0093] In this embodiment, a heat-insulating baffle 10 is also provided in the filter chamber 107, forming a heat-insulating baffle for the filter 7 between the baffle and the inner wall of the housing 1, further enhancing the heat insulation performance of the filter chamber 107, so that the temperature of the filtered gas does not change much, ensuring normal use in subsequent operations.

[0094] Specifically, in this embodiment, the material of the insulation partition 10 can be metal (such as aluminum alloy, stainless steel, etc.) or thermal insulation material (such as rock wool board, aluminum silicate board, etc.), and the selection is made according to the actual insulation requirements and the internal space layout of the filter chamber 107.

[0095] Specifically, in this embodiment, the external dimensions of the thermal insulation partition 10 are matched with the internal structure of the filter cavity 107 to ensure that an effective thermal insulation cavity is formed between it and the inner wall of the shell 1.

[0096] In an optional embodiment, a differential pressure gauge 11 is provided on the outside of the housing 1 to measure the pressure difference across the filter 7.

[0097] In this embodiment, a differential pressure gauge 11 is installed on the outside of the housing 1 via a mounting bracket 5 to measure the pressure difference across the filter 7. By monitoring the changes in the pressure difference, the clogging status of the filter 7 can be understood in a timely manner, providing a scientific basis for the maintenance and replacement of the filter 7 and ensuring the normal operation of the filtration system.

[0098] As can be seen from the above, the assembly process of the filter housing provided by this utility model is as follows:

[0099] 1. Housing 1 preparation: Place the pre-manufactured housing 1 on a clean and flat assembly platform, check whether the air inlet 104, exhaust port 105 and mounting port of housing 1 are intact, and ensure that there are no impurities, dust or other foreign objects inside the filter chamber 107.

[0100] 2. Connecting the upper and lower components: For the upper connecting end 3, connect and fix the large end of the first thermal insulation reducer 301 to the outer wall of the shell 1, and simultaneously connect the large end of the first internal transition section 302 to the exhaust port 105 on the shell 1, ensuring a tight connection. Then, connect the small end of the first thermal insulation reducer 301 to the outer edge of the upper clamp joint 304, and connect the small end of the first internal transition section 302 to the inner hole of the upper clamp joint 304, forming a sealed upper thermal insulation cavity 303. Similarly, for the lower connecting end 4, connect the second internal transition section 402, the second thermal insulation reducer 401, and the lower clamp joint in sequence to form a sealed lower thermal insulation cavity, completing the installation of the upper and lower components.

[0101] 3. Install the insulation partition 10: Install the insulation partition 10 at a predetermined position in the filter chamber 107 so that it forms an insulation cavity with the inner wall of the shell 1, thereby enhancing the insulation performance of the filter chamber 107.

[0102] 4. Install the inflatable sealing strip 6: Accurately place the annular inflatable sealing strip 6 into the sealing groove 103 within the filter chamber 107, ensuring the sealing strip is not twisted or damaged and fits tightly against the sealing groove 103. Connect the inflation pipe to the inflatable sealing strip 6 for subsequent inflation operations.

[0103] 5. Place the filter 7: Slowly insert the filter 7 into the filter chamber 107 through the installation port, taking care to maintain the verticality and horizontality of the filter 7 to avoid collision or scratching with the chamber wall. When one end of the filter 7 is close to the inflatable sealing strip 6, adjust the position of the filter 7 so that it corresponds to the compression surface of the sealing strip.

[0104] Pull-out blocks 9 can be pre-installed on filter 7 to ensure that pull-out blocks 9 are securely connected to filter 7, facilitating subsequent disassembly.

[0105] 6. Install gasket 8: After the filter 7 is placed in place, install the gasket 8 at the opening of the sealing groove 103, so that one side of the gasket 8 tightly seals the sealing groove 103, and the other side is fixedly connected to the end of the filter 7 by an appropriate connection method (such as screws, buckles, etc.) to further enhance the sealing effect.

[0106] 7. Connect the inflation device: Connect the inflation device to the inflation pipe of the inflatable sealing strip 6, and inflate the inflatable sealing strip 6 according to the set inflation pressure. During the inflation process, carefully observe the expansion of the inflatable sealing strip 6 to ensure that it evenly squeezes the filter 7 to achieve the sealing and fixing functions. After inflation is complete, close the valve of the inflation device to maintain a stable air pressure inside the sealing strip.

[0107] 8. Install cover plate 2: Align cover plate 2 with the mounting port, and install cover plate 2 tightly onto housing 1 according to the selected detachable connection method (such as bolt connection, snap-fit ​​or transition fit) to ensure the sealing of the mounting port and prevent gas leakage.

[0108] 9. Install differential pressure gauge 11: Install differential pressure gauge 11 at a suitable position outside housing 1, and ensure that the connection pipes between the sensor of differential pressure gauge 11 and both ends of filter 7 are unobstructed, so as to accurately measure the differential pressure across filter 7.

[0109] The working process of the filter box is as follows:

[0110] 1. Gas Inflow: The industrial gas to be filtered enters the filter housing through the lower clamp joint, the lower insulation chamber, and the air inlet 104. The lower insulation chamber reduces the impact of temperature changes on the gas, ensuring that the gas enters the filter chamber 107 in a relatively stable state.

[0111] 2. Filtration process: Gas passes sequentially through filter 7 within filter chamber 107. Filter 7 intercepts impurities and particulate matter in the gas, allowing clean gas to pass through. During this process, the inflatable sealing strip 6 maintains constant pressure on filter 7, ensuring the sealing and stability of filter 7 and preventing gas from leaking to the outside of housing 1 due to insufficient filtration.

[0112] 3. Gas outflow: The filtered clean gas is discharged from the exhaust port 105, passes through the upper insulation chamber 303 and the upper clamp connector 304 and is output to the subsequent production process or application scenario to ensure that the quality of the output gas meets the process requirements.

[0113] 4. Differential Pressure Monitoring: Differential pressure gauge 11 monitors the differential pressure across filter 7 in real time. When the differential pressure gradually increases and reaches the set value, it indicates that there is a significant accumulation of impurities on the surface of filter 7, resulting in increased filtration resistance and potentially affecting filtration efficiency. At this time, operators can promptly arrange for maintenance or replacement of filter 7 based on the indication from differential pressure gauge 11 to ensure the normal operation of the filtration system.

[0114] In this invention, the replacement process for filter 7 is as follows:

[0115] 1. Preparation: Close the inlet and outlet valves of the filter housing to ensure stable gas pressure and no gas flow inside the housing. Prepare suitable tools, such as wrenches and screwdrivers, as well as the new filter 7 and necessary sealing materials.

[0116] 2. Remove cover plate 2: Depending on the connection method between cover plate 2 and housing 1 (such as bolt connection, snap-fit ​​or transition fit), use the appropriate tools to remove cover plate 2 and place it in a safe position to avoid damage or loss.

[0117] 3. Release the pressure of the inflatable sealing strip 6: Open the vent valve of the inflation device to slowly release the gas in the inflatable sealing strip 6, so that the sealing strip returns to the uninflated state and no longer squeezes and fixes the filter 7.

[0118] 4. Disassembling Filter 7: Hold the pull-out block 9 at the end of Filter 7 and slowly and steadily pull Filter 7 out of Filter Chamber 107. During the pulling process, be careful to avoid colliding or scratching Filter 7 with the chamber wall to prevent damage to the surface of Filter 7 and the chamber wall.

[0119] 5. Clean the installation site: Properly dispose of the removed old filter 7 to avoid environmental pollution. Use a clean cloth or brush to clean impurities, dust, etc. inside the filter chamber 107 and around the sealing groove 103 to ensure that the installation site is clean and free of dirt.

[0120] 6. Install the new filter 7: Following the relevant steps in the assembly process described above, install the new filter 7 or the cleaned filter 7 into the filter chamber 107, and inflate the air sealing strip 6 to compress, fix, and seal the new filter 7.

[0121] 7. Restore cover plate 2 and seal: Install cover plate 2, ensuring a good seal at the installation opening. Check that all connections are secure and reliable, with no risk of gas leakage.

[0122] 8. Operation and debugging: Open the inlet valve and the outlet valve to allow the gas to slowly pass through the filter box. Observe the changes in the reading of the differential pressure gauge 11 and the operating status of the filter box to ensure that the new filter 7 is working properly and the filtration system is operating stably.

[0123] The beneficial effects of this utility model embodiment are:

[0124] The air-filled sealing strip 6, located in the sealing groove 103, seals the filter 7 inside the housing 1 while also pressing and positioning the filter 7. This achieves both positioning, ensuring the stability of the filter 7 after installation, and sealing performance, preventing gas from leaking out of the housing 1 and improving the overall performance of the filter box.

[0125] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A filter housing, characterized in that, Includes housing, filter, and inflatable sealing strip; The housing has a filter chamber inside, and the filter is disposed inside the filter chamber; One end of the housing has an air inlet communicating with the filter chamber, and the other end has an exhaust port communicating with the filter chamber. The side wall of the housing is provided with an installation port that allows the filter to enter and exit. The filter chamber is provided with an annular sealing groove, and the inflatable sealing strip is disposed in the sealing groove. When inflated, the inflatable sealing strip can form a seal by squeezing the filter, while simultaneously fixing and positioning the filter.

2. The filter housing according to claim 1, characterized in that, A gasket is provided at the opening of the sealing groove; One side of the pad is positioned corresponding to the opening of the sealing groove, and the other side is fixedly connected to the end of the filter.

3. The filter housing according to claim 1, characterized in that, The filter has a pull-out block at one end near the mounting port, which can pull the filter out of the filter chamber.

4. The filter housing according to claim 1, characterized in that, It also includes a cover plate, which is disposed at the mounting opening and is used to seal the mounting opening; The cover plate is detachably connected to the housing.

5. The filter housing according to claim 4, characterized in that, The detachable connection method is at least one of bolt connection, snap-fit ​​or transition fit.

6. The filter housing according to claim 1, characterized in that, The housing has an upper connecting end and a lower connecting end at its two ends, which are used to connect with other components.

7. The filter housing according to claim 6, characterized in that, The upper connection end includes a first insulated reducing pipe, a first internal transition section, and an upper clamp joint; The first heat-insulating reducer is tapered, with its larger end connected to the outer wall of the shell and its smaller end connected to the outer edge of the upper clamp joint. The first internal transition section is tapered, with the large end of the first internal transition section connected to the exhaust port on the housing, and the small end of the first internal transition section connected to the inner hole of the upper clamp connector. A sealed upper insulation cavity is formed between the first internal transition section and the first insulation reducer.

8. The filter housing according to claim 6, characterized in that, The lower connecting end includes a second insulated reducer, a second internal transition section, and a lower clamp joint; The second heat-insulating reducer is tapered. The larger end of the second heat-insulating reducer is connected to the outer wall of the shell, and the smaller end of the second heat-insulating reducer is connected to the outer edge of the lower clamp joint. The second internal transition section is tapered, with the larger end of the second internal transition section connected to the air inlet on the housing, and the smaller end of the second internal transition section connected to the inner hole of the lower clamp connector; A sealed lower insulation cavity is formed between the second internal transition section and the second insulation reducer.

9. The filter housing according to claim 1, characterized in that, A heat-insulating partition is provided inside the filter chamber, and the heat-insulating partition and the inner wall of the shell form the heat-insulating cavity of the filter.

10. The filter housing according to claim 1, characterized in that, A differential pressure gauge is installed on the outside of the housing to measure the pressure difference across the filter.

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