Natural gas odorizing tank outlet filter device

Abstract

The application relates to the technical field of filtering devices, in particular to a natural gas odorizing tank outlet filtering device, which comprises an outlet part in communication with an odorizing tank outlet and a filtering assembly arranged in the outlet part, an assembly groove is arranged in the outlet part, the filtering assembly is arranged in the lumen of the odorizing tank outlet part through the assembly groove, the filtering assembly comprises a fixing frame, a filtering bin and a storage bin arranged in the fixing frame, the filtering bin is arranged at the bottom of the storage bin, the storage bin and the filtering bin respectively store activated carbon, an electromagnetic valve is arranged at the bottom of the storage bin, and the electromagnetic valve is used for controlling the communication between the storage bin and the filtering bin; a monitoring assembly is arranged in the filtering assembly, the monitoring assembly is used for monitoring the activated carbon consumption in the storage bin and the filtering bin, when the activated carbon consumption in the storage bin is insufficient, the monitoring assembly issues an alarm, when the activated carbon consumption in the filtering bin is insufficient, the electromagnetic valve is driven to flow the activated carbon in the storage bin into the filtering bin, and the activated carbon supplement and monitoring in the filtering process are realized.

Description

Technical Field

[0001] This invention relates to the field of filtration device technology, specifically to a filtration device for the outlet of a natural gas odorization tank. Background Technology

[0002] Odorant (tetrahydrothiophene) has a strong odor. When added to natural gas at very low concentrations, it imparts a distinctive, unpleasant warning odor, allowing leaks to be detected when they reach 5% of their lower explosive limit or a concentration permissible for human health. In practical applications, because filtration systems are typically not installed at the outlet of the odorant tank, the odorant exhaust gas is directly released into the air, polluting the air and potentially mixing with leaking gas, making it difficult to detect leaks in a timely manner. Activated carbon is a black, porous solid carbonaceous material produced from coal through crushing, molding, or carbonization and activation of uniform coal particles. The main component of activated carbon is carbon, containing small amounts of oxygen, hydrogen, sulfur, nitrogen, chlorine, and other elements. It possesses strong adsorption properties and is a widely used industrial adsorbent. In existing solutions, activated carbon is introduced as an adsorbent to apply a filtration system to the outlet of the natural gas odorant tank, thereby adsorbing and treating the exhaust gas emitted from the odorant tank, reducing environmental pollution and minimizing interference for inspection personnel in determining whether a gas leak has occurred.

[0003] Therefore, activated carbon is often used as an adsorbent in existing natural gas odorization tank outlet filtration systems to adsorb odorants, prevent their discharge, and not affect inspectors' judgment of whether there is a gas leak. However, when to replace the activated carbon has become a new technical problem, because the daily operating conditions of the project are different, and the amount of odorant that the activated carbon needs to adsorb is different. If a periodic replacement scheme is adopted, it will result in waste of activated carbon or the phenomenon of using it even when it has expired.

[0004] Therefore, it is urgent to improve the existing natural gas odorization tank outlet filtration system to achieve activated carbon replenishment and monitoring during the filtration process. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing natural gas odorization tank outlet filtration systems and to provide a natural gas odorization tank outlet filtration device that can automatically replenish odorant and provide an alarm when the odorant is insufficient. This solves the problem of wasting activated carbon due to periodic replacement or using activated carbon that has already expired.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A natural gas odorization tank outlet filtration device includes an outlet section that is connected in communication with the outlet of the odorization tank and a filter assembly disposed in the outlet section. The outlet section is provided with an assembly groove, and the filter assembly is disposed in the cavity of the outlet section of the odorization tank through the assembly groove. The filter assembly includes a fixing frame and a filter chamber and a storage chamber disposed inside the fixing frame. The filter chamber is disposed at the bottom of the storage chamber. The storage chamber and the filter chamber respectively store activated carbon. The bottom of the storage chamber is provided with a solenoid valve, which is used to control the connection between the storage chamber and the filter chamber. The filter chamber is equipped with a telescopic assembly, which includes a base plate and an elastic component. One end of the elastic component is fixedly connected to one end of the base plate, and the other end of the elastic component is fixedly connected to the inner wall of the bottom of the filter chamber. Filter plates are respectively embedded on both sides of the fixing frame. The filter assembly is equipped with a monitoring component, which is used to monitor the amount of activated carbon in the storage compartment and the filter compartment. When the amount of activated carbon in the storage compartment is insufficient, the monitoring component will issue an alarm. When the amount of activated carbon in the filter compartment is insufficient, the solenoid valve will be driven to flow the activated carbon in the storage compartment into the filter compartment. The mounting bracket is equipped with a fixing component, which is used to connect the filter component to the assembly slot.

[0007] The above technical solution produces the following technical effects: This device uses a filter chamber and storage compartment to pre-store activated carbon, thus eliminating the need to disassemble the entire filter assembly from the outlet to replenish the activated carbon in the filter chamber. This reduces the risk of natural gas leakage during replenishment and eliminates the need for shutdown for replacement, ensuring continuous natural gas odorization and transportation operations and reducing operating costs. The monitoring component can automatically monitor the remaining activated carbon and automatically replenish it, eliminating the need for frequent manual opening and inspection, reducing manual maintenance workload, and improving the stability and safety of the device operation.

[0008] As a further improvement to the natural gas odorization tank outlet filtration device of this application, the monitoring component includes a controller and a first monitoring unit electrically connected to the controller. The first monitoring unit is disposed on the inner wall of the filter chamber and is used to monitor the amount of activated carbon in the filter chamber and transmit the data of the amount of activated carbon in the filter chamber to the controller. When the amount of activated carbon in the filter chamber is lower than a first threshold, the controller drives the solenoid valve to allow the activated carbon in the storage compartment to enter the filter chamber.

[0009] As a further improvement to the natural gas odorization tank outlet filtration device of this application, the monitoring component also includes a second monitoring unit, which is installed in the storage compartment and is used to monitor the amount of activated carbon in the storage compartment and transmit the data of the amount of activated carbon in the storage compartment to the controller. When the amount of activated carbon in the storage compartment is lower than a second threshold, the controller issues an alarm.

[0010] As a further improvement to the natural gas odorization tank outlet filtration device of this application, the elastic component includes a first telescopic rod and a spring member sleeved on the outer periphery of the first telescopic rod. One end of the first telescopic rod is fixedly connected to one end of the base plate, and the other end of the first telescopic rod is fixedly connected to the inner wall of the bottom of the filter chamber; one end of the spring member is fixedly connected to one end of the base plate, and the other end of the spring member is fixedly connected to the inner wall of the bottom of the filter chamber.

[0011] As a further improvement to the natural gas odorization tank outlet filtration device of this application, there are multiple sets of the first telescopic rod and spring members, which are evenly arranged on the lower surface of the base plate, and the upper surface of the storage compartment is provided with a feed inlet; the side of the filter compartment is provided with a discharge outlet.

[0012] As a further improvement to the natural gas odorization tank outlet filtration device of this application, the assembly groove includes a fitting groove and a recess, the recess being used to support the bottom of the fixing frame, and the fitting groove being used for the fixing frame to pass through; The mounting bracket is connected to the mounting slot via a fixing component.

[0013] As a further improvement to the natural gas odorization tank outlet filtration device of this application, the top of the fixed frame is provided with a receiving compartment and a through groove provided on the receiving compartment; The receiving chamber is used to receive the fixed component, which includes a gear and a first rack and a second rack that mesh with the gear surfaces. One end of the first rack is fixed with a first cylinder, and one end of the second rack is fixed with a second cylinder. The two sides of the gear shaft are respectively fixed to the two side walls of the receiving chamber. A connecting rod is fixed to the edge of the gear. The connecting rod is set through a through groove and is used to drive the gear to reciprocate. The receiving compartment has first through holes on both sides, and the matching slot has matching holes on both sides; When the connecting rod drives the gear to rotate around the axis, the first cylinder and the second cylinder respectively pass through the first through hole and the fitting hole.

[0014] As a further improvement to the natural gas odorization tank outlet filtration device of this application, the first rack and the second rack are arranged in parallel and symmetrically on both sides of the gear. When the gear rotates around its axis, the meshing of the gear teeth causes the first rack and the second rack to make linear displacements in opposite directions.

[0015] As a further improvement to the natural gas odorization tank outlet filtration device of this application, the channel is V-shaped.

[0016] As a further improvement to the natural gas odorization tank outlet filtration device of this application, a handle is fixedly connected to the top of the mounting bracket. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side sectional view of the present invention. Figure 3 This is a schematic diagram of the front sectional view of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0018] Tag name: 1-Export Department; 11-Assembly slot; 111-Card slot; 1111-Card fitting hole; 112-groove; 2-Filter components; 21-Fixed bracket; 211-Filter Chamber; 2111 - Discharge port; 212 - Storage compartment; 2121-Solenoid valve; 2122 - Feed inlet; 213-Telescopic assembly; 2131 - Base Plate; 2132 - Flexible Components; 2133 - First telescopic pole; 2134 - Spring components; 214 - Receiving Warehouse; 2141 - First through hole; 2142-Through groove; 215-Handle; 216-Filter Plate; 22-Monitoring components; 221-Controller; 222 - First Monitoring Unit; 223 - Second Monitoring Unit; 23-Fixed components; 231-Gear; 2311-Wheel Axle; 2312-Connecting rod; 232 - First rack; 2321 - First cylinder; 233 - Second rack; 2331 - Second cylinder. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] To address the technical shortcomings of existing natural gas odorization tank outlet filtration systems, this application presents an improvement to the outlet section 1 of the natural gas odorization tank. The outlet section 1 can be a cavity fixedly connected to the outlet of the natural gas odorization tank or a corresponding pipe; details will not be elaborated here. Figure 1 As shown, the natural gas odorization tank outlet filtration device of this application includes an outlet section 1 that is connected to the outlet of the odorization tank and a filter assembly 2 disposed in the outlet section 1. The outlet section 1 is provided with an assembly groove 11, and the filter assembly 2 is disposed in the cavity of the outlet section 1 of the odorization tank through the assembly groove 11. The filter assembly 2 includes a fixing frame 21 and a filter chamber 211 and a storage chamber 212 disposed inside the fixing frame 21. The filter chamber 211 is disposed at the bottom of the storage chamber 212. The storage chamber 212 and the filter chamber 211 respectively store activated carbon. The bottom of the storage chamber 212 is provided with a solenoid valve 2121, which is used to control the connection between the storage chamber 212 and the filter chamber 211. In the specific implementation process, the solenoid valve 2121 can replenish the new activated carbon in the storage chamber 212 into the filter chamber 211 without the need for staff to stop the machine and open the cover to manually replace and replenish it, thus reducing the safety risks and time costs of maintenance operations.

[0021] The filter chamber 211 is further equipped with a telescopic component 213, which includes a base plate 2131 and an elastic component 2132. One end of the elastic component 2132 is fixedly connected to one end of the base plate 2131, and the other end of the elastic component 2132 is fixedly connected to the inner wall of the bottom of the filter chamber 211. Filter plates 216 are respectively embedded on both sides of the fixing frame 21. In specific implementation, the volume of the filter chamber 211 can be adaptively adjusted by the telescopic component 213. When the filter chamber 211 is replenished with new activated carbon, the overall weight increases, the elastic component 2132 is compressed, the base plate 2131 moves down accordingly, and the internal volume of the filter chamber 211 increases accordingly to meet the capacity requirements of the newly added activated carbon. In addition, a discharge port 2111 is provided on the side of the filter chamber 211. When the activated carbon in the filter chamber 211 gradually becomes saturated, the saturated activated carbon located below the filter chamber 211 can be discharged through the discharge port. After the weight is reduced, the elastic component 2132 rebounds, and the bottom plate 2131 moves upward and resets. The structural design is flexible and adaptable to the automatic replacement and replenishment process of activated carbon. The filter plates 216 embedded on both sides can prevent activated carbon particles from flowing out with the airflow while ensuring the normal flow of natural gas, thus preventing activated carbon particles from entering the downstream pipeline and causing blockage.

[0022] Specifically, the elastic component 2132 includes a first telescopic rod 2133 and a spring element 2134 sleeved on the outer periphery of the first telescopic rod 2133. One end of the first telescopic rod 2133 is fixedly connected to one end of the base plate 2131, and the other end of the first telescopic rod 2133 is fixedly connected to the inner wall of the bottom of the filter chamber 211. One end of the spring element 2134 is fixedly connected to one end of the base plate 2131, and the other end of the spring element 2134 is fixedly connected to the inner wall of the bottom of the filter chamber 211. When new activated carbon is added to the filter chamber 211, the overall weight of the filter chamber 211 increases, and the bottom plate 2131 experiences increased downward pressure. At this time, the spring element 2134 is compressed, and the first telescopic rod 2133 contracts synchronously, causing the bottom plate 2131 to move downward, automatically expanding the usable volume inside the filter chamber 211, allowing it to accommodate the new activated carbon without manual structural adjustment. After the saturated activated carbon is discharged from the discharge port 2111, the overall weight is reduced. The elastic force of the spring component 2134 pushes the bottom plate 2131 upward, and the first telescopic rod 2133 extends simultaneously, causing the bottom plate 2131 to return to its initial position. The volume of the filter chamber 211 also shrinks accordingly, ensuring that the activated carbon is always in close contact with the filter plate 216, preventing natural gas from flowing out due to volume redundancy, and ensuring stable filtration effect. The first telescopic rod 2133 can both guide the extension and retraction direction of the spring component 2134 to prevent the spring from bending due to force deviation, and limit the movement range of the bottom plate 2131 to prevent excessive displacement of the bottom plate 2131 and structural jamming, making the entire adaptive adjustment process more stable and reliable.

[0023] In addition, such as Figure 1-2 As shown, there are multiple sets of the first telescopic rod 2133 and the spring 2134, which are evenly arranged on the lower surface of the base plate 2131. This design of multiple sets evenly arranged can make the base plate 2131 more evenly stressed, avoid the problem of tilting and jamming due to uneven stress, and at the same time, can distribute and share the pressure brought by the overall weight of the filter chamber 211.

[0024] As a further improvement to the natural gas odorization tank outlet filtration device of this application, multiple sets of the first telescopic rod 2133 and spring member 2134 are evenly arranged on the lower surface of the base plate 2131. A monitoring component 22 is provided in the filter assembly 2. The monitoring component 22 is used to monitor the amount of activated carbon in the storage chamber 212 and the filter chamber 211. When the amount of activated carbon in the storage chamber 212 is insufficient, the monitoring component 22 issues an alarm. When the amount of activated carbon in the filter chamber 211 is insufficient, the solenoid valve 2121 is driven to flow the activated carbon in the storage chamber 212 into the filter chamber 211. In addition, the monitoring component 22 also includes a second monitoring unit 223. The second monitoring unit 223 is set in the storage chamber 212 and is used to monitor the amount of activated carbon in the storage chamber 212 and transmit the data of the amount of activated carbon in the storage chamber 212 to the controller 221. When the amount of activated carbon in the storage chamber 212 is lower than a second threshold, the controller 221 issues an alarm. In the specific implementation process, the first monitoring unit 222 can replenish activated carbon to the storage chamber 212 in a timely manner to avoid insufficient natural gas filtration due to a lack of activated carbon. The first monitoring unit 222 is installed in the filter chamber 211 and can monitor the usage status of activated carbon in the filter chamber 211 in real time. When the total amount of activated carbon in the filter chamber 211 meets the replenishment trigger condition, the controller 221 will automatically open the solenoid valve 2121 connecting the storage chamber 212 and the filter chamber 211, allowing new activated carbon from the storage chamber 212 to automatically replenish the filter chamber 211. After replenishment is completed, the solenoid valve 2121 will automatically close. Alternatively, the solenoid valve 2121 can be set to open and close at fixed intervals to ensure sufficient replenishment of the filter chamber 211.

[0025] In addition, a feed inlet 2122 is provided on the upper surface of the storage compartment 212. After the monitoring unit 223 detects that the activated carbon content in the storage compartment 212 is lower than the second threshold and issues an alarm, the staff can add new activated carbon through the feed inlet 2122. The feed inlet 2122 is equipped with a removable sealing cover. After replenishment, the sealing cover is closed and locked to ensure the airtightness of the entire filtration device, prevent natural gas leakage, and improve the safety of the device.

[0026] Specifically, the mounting bracket 21 includes a fixing component 23, which is used to snap-fit ​​the filter component 2 to the mounting slot 11. For example... Figure 2 The assembly slot 11 includes a locking slot 111 and a recess 112. The recess 112 is used to receive the bottom of the fixing frame 21, and the locking slot 111 is used for the fixing frame 21 to pass through. The fixing frame 21 is connected to the locking slot 111 by a fixing component 23. Preferably, the fixing component 23 is provided in two sets and distributed on both sides of the top width direction of the fixing frame 21. The following is a detailed description using the fixing frame 21 on either side as an example: Furthermore, the top of the fixing frame 21 is provided with a receiving chamber 214 and a through groove 2142 disposed on the receiving chamber 214; the receiving chamber 214 is used to receive the fixing component 23, the fixing component 23 includes a gear 231 and a first rack 232 and a second rack 233 meshing with the surfaces of the gear 231, one end of the first rack 232 is fixed with a first cylinder 2321, and one end of the second rack 233 is fixed with a second cylinder 2331; the two sides of the axle 2311 of the gear 231 are respectively fixed to the receiving chamber. On the two side walls of the receiving chamber 214, a connecting rod 2312 is fixed to the wheel edge of the gear 231. The connecting rod 2312 is set through the through groove 2142 and is used to drive the gear 231 to reciprocate. The receiving chamber 214 has a first through hole 2141 on both sides, and a locking hole 1111 on both sides of the locking groove 111. When the connecting rod 2312 drives the gear 231 to rotate around the axis, the first cylinder 2321 and the second cylinder 2331 pass through the first through hole 2141 and the locking hole 1111 respectively to achieve fixation. Thus, by actuating the end of the connecting rod 2312, the operator can rotate the gear 231 within the receiving chamber 214. When the gear 231 rotates, it causes the first rack 232 and the second rack 233, which are meshed together, to move in opposite directions. This causes the first cylinder 2321 and the second cylinder 2331 to extend outwards towards both sides of the receiving chamber 214 along the rotation direction of the gear 231, passing sequentially through the first through hole 2141 and the locking holes 1111 on both sides of the locking groove 111. This locks the fixing frame 21 into the locking groove 111, completing the process. The filter assembly 2 is quickly installed on the assembly slot 11; the reverse lever 2312 drives the gear 231 to reverse, which drives the first rack 232 and the second rack 233 to move towards each other, so that the first cylinder 2321 and the second cylinder 2331 are disengaged from the fitting hole 1111, and the locking of the fixing bracket 21 and the fitting slot 111 is released, making it convenient for the staff to quickly remove the filter assembly 2 from the device, realizing the quick disassembly and replacement of the filter assembly 2 without the need for additional tools, which greatly improves the convenience of device maintenance and replacement.

[0027] Preferably, the first rack 232 and the second rack 233 are arranged parallel and symmetrically on the upper and lower sides of the gear 231; when the gear 231 rotates around its axis, the meshing of the tooth profiles of the gear 231 drives the first rack 232 and the second rack 233 to make linear displacements in opposite directions. It is worth noting that... Figure 3 and Figure 4The lengths of the first rack 232 and the second rack 233 are both greater than the width of the through groove 2142, with a certain reserved width. Therefore, during the rotation of the gear 231, the first rack 232 and the second rack 233 will never disengage from the gear 231 and slide into the through groove 2142, especially the first rack 232. This design ensures the stability and reliability of the locking and unlocking process of the fixing component 23, avoiding problems such as jamming or tooth disengagement leading to assembly / disassembly failure, and improving the structural stability and service life of the fixing component 23. Preferably, the through groove 2142 is V-shaped. Thus, the connecting rod 2312 can slide along the groove wall of the V-shaped through groove 2142 during rotation. The guiding structure of the V-shaped groove can limit the movement path of the connecting rod 2312, ensuring the relative displacement distance of the first rack 232 and the second rack 233, while preventing the first rack 232 from disengaging from the gear 231 and sliding into the through groove 2142.

[0028] In addition, such as Figure 1 As shown, a handle 215 is fixedly connected to the top of the mounting bracket 21.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A natural gas odorization tank outlet filtration device, comprising an outlet section (1) communicating with the outlet of the odorization tank and a filter assembly (2) disposed in the outlet section (1), wherein the outlet section (1) is provided with an assembly groove (11), and the filter assembly (2) is disposed in the cavity of the outlet section (1) through the assembly groove (11), characterized in that, The filter assembly (2) includes a fixing frame (21) and a filter chamber (211) and a storage chamber (212) disposed inside the fixing frame (21). The filter chamber (211) is disposed at the bottom of the storage chamber (212). The storage chamber (212) and the filter chamber (211) respectively store activated carbon. The bottom of the storage chamber (212) is provided with a solenoid valve (2121). The solenoid valve (2121) is used to control the communication between the storage chamber (212) and the filter chamber (211). The filter chamber (211) is provided with a telescopic component (213), which includes a base plate (2131) and an elastic component (2132). One end of the elastic component (2132) is fixedly connected to one end of the base plate (2131), and the other end of the elastic component (2132) is fixedly connected to the inner wall of the bottom of the filter chamber (211). Filter plates (216) are respectively embedded on both sides of the fixing frame (21). The filter assembly (2) is equipped with a monitoring assembly (22), which is used to monitor the amount of activated carbon in the storage compartment (212) and the filter compartment (211). When the amount of activated carbon in the storage compartment (212) is insufficient, the monitoring assembly (22) issues an alarm. When the amount of activated carbon in the filter compartment (211) is insufficient, the solenoid valve (2121) is driven to flow the activated carbon in the storage compartment (212) into the filter compartment (211). The fixing frame (21) is provided with a fixing component (23), which is used to snap the filter component (2) to the assembly slot (11).

2. The natural gas odorization tank outlet filtration device according to claim 1, characterized in that, The monitoring component (22) includes a controller (221) and a first monitoring unit (222) electrically connected to the controller (221). The first monitoring unit (222) is disposed on the inner wall of the filter chamber (211) and is used to monitor the amount of activated carbon in the filter chamber (211) and transmit the data of the amount of activated carbon in the filter chamber (211) to the controller (221). When the amount of activated carbon in the filter chamber (211) is lower than a first threshold, the controller (221) drives the solenoid valve (2121) to allow the activated carbon in the storage chamber (212) to enter the filter chamber (211).

3. The natural gas odorization tank outlet filtration device according to claim 2, characterized in that, The monitoring component (22) further includes a second monitoring unit (223), which is located in the storage compartment (212) and is used to monitor the amount of activated carbon in the storage compartment (212) and transmit the data of the amount of activated carbon in the storage compartment (212) to the controller (221). When the amount of activated carbon in the storage compartment (212) is lower than a second threshold, the controller (221) issues an alarm.

4. The natural gas odorization tank outlet filtration device according to claim 1, characterized in that, The elastic component (2132) includes a first telescopic rod (2133) and a spring member (2134) sleeved on the outer periphery of the first telescopic rod (2133). One end of the first telescopic rod (2133) is fixedly connected to one end of the base plate (2131), and the other end of the first telescopic rod (2133) is fixedly connected to the inner wall of the bottom of the filter chamber (211). One end of the spring member (2134) is fixedly connected to one end of the base plate (2131), and the other end of the spring member (2134) is fixedly connected to the inner wall of the bottom of the filter chamber (211).

5. A natural gas odorization tank outlet filtration device according to claim 4, characterized in that, The first telescopic rod (2133) and the spring (2134) are in multiple sets and are evenly arranged on the lower surface of the base plate (2131). The upper surface of the storage compartment (212) is provided with a feed inlet (2122); the side of the filter compartment (211) is provided with a discharge outlet (2111).

6. The natural gas odorization tank outlet filtration device according to claim 1, characterized in that, The assembly slot (11) includes a fitting slot (111) and a groove (112). The groove (112) is used to support the bottom of the fixing frame (21), and the fitting slot (111) is used for the fixing frame (21) to pass through. The fixing frame (21) is connected to the locking slot (111) via the fixing component (23).

7. A natural gas odorization tank outlet filtration device according to claim 6, characterized in that, The top of the fixed frame (21) is provided with a receiving compartment (214) and a through groove (2142) provided on the receiving compartment (214). The receiving chamber (214) is used to receive the fixing component (23). The fixing component (23) includes a gear (231) and a first rack (232) and a second rack (233) meshing with the surface of the gear (231). One end of the first rack (232) is fixed with a first cylinder (2321), and one end of the second rack (233) is fixed with a second cylinder (2331). The two sides of the axle (2311) of the gear (231) are respectively fixed to the two side walls of the receiving chamber (214). A connecting rod (2312) is fixed to the wheel edge of the gear (231). The connecting rod passes through the through groove (2142) and is used to drive the gear (231) to reciprocate. The receiving compartment (214) is provided with first through holes (2141) on both sides, and the card slot (111) is provided with card holes (1111) on both sides. When the connecting rod (2312) drives the gear (231) to rotate around the axis, the first cylinder (2321) and the second cylinder (2331) respectively pass through the first through hole (2141) and the fitting hole (1111).

8. A natural gas odorization tank outlet filtration device according to claim 7, characterized in that, The first rack (232) and the second rack (233) are arranged in parallel and symmetrically on the upper and lower sides of the gear (231); When the gear (231) rotates around the axis, the meshing of the tooth profile of the gear (231) drives the first rack (232) and the second rack (233) to make linear displacements in opposite directions.

9. A natural gas odorization tank outlet filtration device according to claim 7, characterized in that, The through groove (2142) is V-shaped.

10. A natural gas odorization tank outlet filtration device according to claim 1, characterized in that, The top of the mounting bracket (21) is fixedly connected to a handle (215).

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