Flame-retardant hermetically-assembled meter shell assembly of gas meter

Abstract

The invention discloses a gas meter flame-retardant sealed assembled meter shell assembly which comprises a gas meter shell, a sealing plate is slidably connected to one side of the gas meter shell, a battery groove is formed in one side of the gas meter shell, a battery cover plate is rotatably connected to one side of the gas meter shell, one side of the battery cover plate is attached to a groove opening of the battery groove, and the other side of the battery cover plate is attached to the groove opening of the battery groove. And one side of the bottom of the sealing plate is slidably connected with a jacking assembly, and one side of the bottom of the gas meter shell is slidably connected with a limiting assembly. By pulling the handle, the handle drives the whole jacking assembly to move to the top towards the top of the gas meter shell, the elastic plate can jack the limiting plate and the guide plate to move into the opening groove, the sealing plate is supported again, and when the whole jacking assembly moves to the top, the jacking ball moves to be fully attached to the inclined face of the limiting ring; and the rubber ball is pressed against the surface of the battery cover plate, so that the battery cover plate and the sealing ring are fully attached to the groove opening of the battery groove, and the sealing effect on the battery groove is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of gas meters, and in particular relates to a flame-retardant sealed meter case assembly of a gas meter. Background Art

[0002] A gas meter is a device used to measure the consumption of gases such as natural gas or liquefied petroleum gas (LPG) in homes or industries. The meter's header includes a metering device that measures the amount of gas flowing through the meter. The meter header typically contains a mechanical or electronic metering device to accurately record gas usage. The meter housing effectively protects the internal components of the meter.

[0003] For example, the national patent publication number CN221826245U discloses a highly flame-retardant, waterproof and dust-proof gas meter housing. After the battery pack is placed in the battery slot, the cover is rotated clockwise so that the cover drives the sealing ring to fit with the gas meter shell to achieve the sealing effect. Then the cover is pushed upward to insert the guide plate into the guide groove. The cover is continued to be pushed upward. While the cover moves upward, it will drive the convex plate to move. Through the inclined block design on the top of the convex plate, the sealing plate can be squeezed to achieve the effect of tightening the sealing ring and improve the sealing effect of the battery slot. Then, the fixing screw is rotated to install the cover to achieve the effect of waterproof and dustproof. At the same time, the base layer adopts engineering plastic to protect the internal gas meter from damage. The high-temperature resistant layer adopts high-temperature resistant ceramic material, which plays a role of fire isolation at high temperature. The flame retardant layer adopts phosphorus-based flame retardant coating, which can produce flame-retardant gas through chemical reaction when a fire occurs, effectively slowing down the spread of fire and playing a flame retardant function.

[0004] However, the conventional device still has the following problems when used: The cover is installed using screws. Gas meters are mostly installed in dark and humid places, so the surface of the screw cannot be guaranteed to be free from rust, which affects the rotation of the screw and the installation of the cover. In addition, the position of the convex plate is fixed, and it cannot be ensured that there will be no gap between the convex plate and the sealing plate after the screw is screwed and fixed each time, which affects the sealing effect of the battery compartment. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a flame-retardant sealed gas meter case assembly, which has the advantages of facilitating the opening and closing of the sealing plate as a whole and ensuring good sealing of the battery compartment.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a gas meter flame-retardant sealed case assembly, comprising a gas meter shell, a sealing plate slidably connected to one side of the gas meter shell, a battery slot being provided on one side of the gas meter shell, a battery cover being rotatably connected to one side of the gas meter shell, one side of the battery cover being fitted with a notch of the battery slot, a top holding assembly being slidably connected to one side of the bottom of the sealing plate, a limiting assembly being slidably connected to one side of the bottom of the gas meter shell, and the top holding assembly being movably fitted with the limiting assembly; an auxiliary sealing assembly being slidably connected to one side of the middle of the gas meter shell, the auxiliary sealing assembly being movably contacted with one side of the battery cover, and the top holding assembly limiting the auxiliary sealing assembly.

[0007] Preferably, the sealing plate has a square plate structure, and a slider is fixedly connected to the top of one side of the sealing plate. The slider is in a "T" shape, and the slider is slidably connected in the sliding groove. The sliding groove is opened on one side of the gas meter casing. There are two groups of sliders fixed, and the two groups of sliders are symmetrically distributed about the center of one side of the sealing plate, and one side of the sealing plate is movably fitted with one side of the gas meter casing.

[0008] Preferably, the supporting assembly includes a movable plate, a supporting plate, a connecting rod, a supporting ball, and a handle. The movable plate is a square plate, and the movable plate is slidably connected in the side groove. The side groove is opened on the bottom side of the sealing plate, and a limiting plate is opened on the bottom side of the sealing plate close to the battery slot. The limiting plate is connected with the side groove, and the limiting plate is a square plate-shaped groove.

[0009] Preferably, the bottom surface of the side groove is fixedly connected to a positioning rod with a circular cylindrical structure, the positioning rod passes through the through groove, the through groove is opened on the top surface of the movable plate, and the through groove passes through to the bottom of the movable plate. A spring is fixedly connected between the bottom surface of the side groove and the movable plate, and the spring is sleeved on the outer ring surface of the positioning rod.

[0010] Preferably, the top holding plate is an arc-shaped plate structure, which is fixedly connected to the bottom of the movable plate, the connecting rod is a round rod, which is fixedly connected to the top of the movable plate, and the top holding ball is a hemispherical structure, which is fixedly connected to the top of the connecting rod.

[0011] Preferably, a connecting groove is provided inside the sealing plate, which is connected to the auxiliary groove and the side groove. The auxiliary groove is provided on the middle side of the sealing plate close to the battery groove. The auxiliary groove is a circular groove. The connecting rod is movably inserted into the connecting groove, and the top holding ball is located in the auxiliary groove.

[0012] Preferably, the limit assembly includes a limit plate, a guide plate, and an elastic plate. The limit plate has a "T"-shaped plate structure. A receiving groove in the form of a "T"-shaped plate groove is provided on one side of the bottom of the gas meter housing. The limit plate is slidably connected in the receiving groove. The receiving groove is communicated with the outside of the gas meter housing. The guide plate has a semicircular plate structure. The guide plate is fixedly connected to the side of the limit plate close to the outside of the gas meter housing, and the guide plate is movably fitted with the arc surface of the top holding plate. The elastic plate is fixedly connected between one side of the limit plate and one side of the receiving groove.

[0013] Preferably, the auxiliary sealing assembly includes an expansion plate, a rubber ball, a limiting ring, a side rod, and a support spring. The expansion plate is a circular plate, the rubber ball is a hemispherical structure, the rubber ball is fixedly connected to one side of the expansion plate, and the rubber ball is movably fitted with one side of the battery cover plate. The limiting ring is an annular plate structure with a right-angled trapezoidal cross-section. The limiting ring is fixedly connected to the side of the expansion plate opposite to the rubber ball, and the outer ring surface of the top holding ball is movably fitted with the inclined surface of the limiting ring.

[0014] Preferably, an expansion groove is provided on the side of the auxiliary groove, and the expansion groove is an annular plate-shaped groove structure. The expansion plate is slidably connected in the expansion groove, and the side rod is fixedly connected to one side of the expansion plate. The side rod is a circular rod, and the side rod passes through the limiting ring. The support spring is fixedly connected between one side of the expansion plate and one side of the auxiliary groove. The support spring is sleeved on the outer ring surface of the side rod, and multiple groups of auxiliary sealing components are arranged side by side.

[0015] Preferably, the handle is a square frame structure, the handle is fixed to a side of the movable plate close to the outside of the gas meter housing, and the handle passes through the side groove and is located outside the gas meter housing.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by pulling the handle toward the top of the gas meter casing, the handle drives the supporting assembly to move toward the top of the gas meter casing as a whole, the elastic plate will support the limit plate and the guide plate to move into the open groove, and the sealing plate will be supported again. While the supporting assembly moves toward the top of the gas meter casing as a whole, the supporting ball moves and fully fits with the inclined surface of the limiting ring, so that the rubber ball supports the surface of the battery cover, ensuring that the battery cover and the sealing ring fully fit with the notch of the battery slot, thereby improving the sealing effect of the battery slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the present invention as a whole.

[0018] Figure 2 It is a schematic diagram of the local structure of the present invention.

[0019] Figure 3 for Figure 2 Enlarged schematic diagram of point A in the middle.

[0020] Figure 4 This is a schematic diagram of the half-section structure of the gas meter housing of the present invention.

[0021] Figure 5 It is a schematic diagram of the half-section structure of the sealing plate of the present invention.

[0022] Figure 6 It is a half-section schematic diagram of the supporting assembly structure of the present invention.

[0023] Figure 7 It is a schematic structural diagram of the limiting component of the present invention.

[0024] Figure 8 It is a schematic structural diagram of the auxiliary sealing assembly of the present invention.

[0025] Figure 9 It is a schematic diagram of the local structure of the present invention.

[0026] In the figure: 1. Gas meter housing; 2. Battery slot; 3. Battery cover; 4. Sealing ring; 5. Storage slot; 6. Limit plate; 7. Guide plate; 8. Elastic plate; 9. Sliding slot; 10. Sealing plate; 101. Slider; 11. Side slot; 12. Movable plate; 13. Through slot; 14. Positioning rod; 15. Top holding plate; 16. Opening slot; 17. Connecting rod; 18. Top holding ball; 19. Connecting slot; 20. Auxiliary slot; 21. Extension slot; 22. Extension plate; 23. Rubber ball; 24. Limiting ring; 25. Side rod; 26. Support spring; 27. Handle. DETAILED DESCRIPTION

[0027] In order to clearly and completely describe the objectives and technical solutions of the present invention and make its advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] For example 1, please refer to Figures 1 to 9The present invention provides a technical solution: a flame-retardant sealed assembly of a gas meter housing, comprising a gas meter housing 1, a sealing plate 10 being slidably connected to one side of the gas meter housing 1, a battery slot 2 being provided on one side of the gas meter housing 1, a battery cover 3 being rotatably connected to one side of the gas meter housing 1, one side of the battery cover 3 being fitted with a notch of the battery slot 2, a top holding assembly being slidably connected to one side of the bottom of the sealing plate 10, a limiting assembly being slidably connected to one side of the bottom of the gas meter housing 1, and the top holding assembly being movably fitted with the limiting assembly; an auxiliary sealing assembly being slidably connected to one side of the middle portion of the gas meter housing 1, the auxiliary sealing assembly being fitted with the battery cover 3 One side is in movable contact, and the supporting assembly limits the auxiliary sealing assembly; pull the handle 27 toward the top of the gas meter housing 1, and the handle 27 drives the supporting assembly as a whole to move toward the top of the gas meter housing 1, and the elastic plate 8 will support the limiting plate 6 and the guide plate 7 to move into the opening groove 16, and the sealing plate 10 is supported again. While the supporting assembly as a whole moves toward the top of the gas meter housing 1, the supporting ball 18 moves and fully fits with the inclined surface of the limiting ring 24, so that the rubber ball 23 supports the surface of the battery cover 3, ensuring that the battery cover 3 and the sealing ring 4 are fully fitted with the notch of the battery slot 2, thereby improving the sealing effect of the battery slot 2.

[0029] Example 2, on the basis of Example 1, the sealing plate 10 is a square plate structure, and a slider 101 is fixedly connected to the top of one side of the sealing plate 10. The slider 101 is in a "T" shape, and the slider 101 is slidably connected in the sliding groove 9. The sliding groove 9 is opened on one side of the gas meter housing 1. There are two groups of sliders 101 fixed, and the two groups of sliders 101 are symmetrically distributed about the center of one side of the sealing plate 10, and one side of the sealing plate 10 is movably fitted with one side of the gas meter housing 1. The holding assembly includes a movable plate 12, a holding plate 15, a connecting rod 17, a holding ball 18, and a handle 27. The movable plate 12 is a square plate, and the movable plate 12 is slidably connected In the side groove 11, the side groove 11 is opened on one side of the bottom of the sealing plate 10, and the sealing plate 10 is provided with a limit plate 6 at the bottom near the battery slot 2. The limit plate 6 is connected to the side groove 11, and the limit plate 6 is a square plate-shaped groove. The bottom surface of the side groove 11 is fixedly connected with a positioning rod 14 with a circular cylindrical structure. The positioning rod 14 passes through the through groove 13. The through groove 13 is opened on the top surface of the movable plate 12. The through groove 13 passes through to the bottom of the movable plate 12. A spring is fixedly connected between the bottom surface of the side groove 11 and the movable plate 12. The spring is sleeved on the outer ring surface of the positioning rod 14. The top holding plate 15 is an arc-shaped plate structure. The top holding plate 15 is fixedly connected to the movable plate 12. At the bottom of the movable plate 12, the connecting rod 17 is a circular rod, the connecting rod 17 is fixedly connected to the top of the movable plate 12, the top holding ball 18 is a hemispherical structure, the top holding ball 18 is fixedly connected to the top of the connecting rod 17, and a connecting groove 19 is provided inside the sealing plate 10. The connecting groove 19 is connected with the auxiliary groove 20 and the side groove 11. The auxiliary groove 20 is provided on the side of the sealing plate 10 near the middle of the battery slot 2. The auxiliary groove 20 is a circular groove. The connecting rod 17 is movably inserted into the connecting groove 19. The top holding ball 18 is located in the auxiliary groove 20. The handle 27 has a square frame structure and is fixed to the side of the movable plate 12 near the outside of the gas meter housing 1 , and the handle 27 passes through the side groove 11 and is located outside the gas meter housing 1. The limit assembly includes a limit plate 6, a guide plate 7, and an elastic plate 8. The limit plate 6 has a "T"-shaped plate structure. A receiving groove 5 in the form of a "T"-shaped plate groove is provided on one side of the bottom of the gas meter housing 1. The limit plate 6 is slidably connected in the receiving groove 5. The receiving groove 5 is connected to the outside of the gas meter housing 1. The guide plate 7 has a semicircular plate structure. The guide plate 7 is fixedly connected to the side of the limit plate 6 close to the outside of the gas meter housing 1, and the guide plate 7 is movably fitted with the arc surface of the top holding plate 15. The elastic plate 8 is fixedly connected between one side of the limit plate 6 and one side of the receiving groove 5.

[0030] In the present invention, the handle 27 is pressed toward the bottom of the gas meter housing 1, and the handle 27 drives the supporting assembly as a whole to move toward the bottom of the gas meter housing 1. The supporting plate 15 squeezes the guide plate 7, and a part of the guide plate 7 and the limit plate 6 will break away from the opening groove 16 and move into the receiving groove 5. At this time, the sealing plate 10 loses its support, and the slider 101 on one side of the sealing plate 10 slides along the sliding groove 9 to its bottom, so that the sealing plate 10 can be quickly opened.

[0031] Example 3, based on Example 2, the auxiliary sealing assembly includes an expansion plate 22, a rubber ball 23, a limiting ring 24, a side rod 25, and a support spring 26. The expansion plate 22 is a circular plate, the rubber ball 23 is a hemispherical structure, the rubber ball 23 is fixedly connected to one side of the expansion plate 22, and the rubber ball 23 is movably fitted with one side of the battery cover 3. The limiting ring 24 is an annular plate structure with a right-angled trapezoidal cross section. The limiting ring 24 is fixedly connected to the side of the expansion plate 22 opposite to the rubber ball 23, and the top holding ball 18 The outer ring surface is movably fitted with the inclined surface of the limit ring 24, and an expansion groove 21 is opened on the side of the auxiliary groove 20. The expansion groove 21 is an annular plate-shaped groove structure. The expansion plate 22 is slidably connected in the expansion groove 21, and the side rod 25 is fixedly connected to one side of the expansion plate 22. The side rod 25 is a round rod, and the side rod 25 passes through the limit ring 24. The support spring 26 is fixedly connected between one side of the expansion plate 22 and one side of the auxiliary groove 20. The support spring 26 is sleeved on the outer ring surface of the side rod 25, and multiple groups of auxiliary sealing components are arranged side by side.

[0032] In the present invention, the handle 27 is pulled toward the top of the gas meter housing 1, and the handle 27 drives the supporting assembly as a whole to move toward the top of the gas meter housing 1, and the elastic plate 8 will support the limit plate 6 and the guide plate 7 to move into the opening groove 16, and the sealing plate 10 is supported again. Under the support of the spring on the outer ring of the positioning rod 14, the limiting assembly as a whole will not be easily displaced; while the supporting assembly as a whole moves toward the top of the gas meter housing 1, the supporting ball 18 moves and fully fits with the inclined surface of the limiting ring 24, so that the rubber ball 23 supports the surface of the battery cover 3, ensuring that the battery cover 3 and the sealing ring 4 are fully fitted with the notch of the battery slot 2, thereby improving the sealing effect of the battery slot 2; the supporting spring 26 can make the rubber ball 23 always have a tendency to move toward the battery cover 3, ensuring that the limiting ring 24 does not exert additional force on the supporting ball 18, thereby preventing the limiting assembly as a whole from having a tendency to move toward the bottom of the gas meter housing 1, and preventing the supporting plate 15 from squeezing the guide plate 7.

[0033] The working principle and usage process of the present invention are as follows: Press the handle 27 toward the bottom of the gas meter housing 1, and the handle 27 drives the top holding assembly to move toward the bottom of the gas meter housing 1 as a whole. The top holding plate 15 squeezes the guide plate 7, and a part of the guide plate 7 and the limit plate 6 will break away from the opening groove 16 and move into the receiving groove 5. At this time, the sealing plate 10 loses its support, and the slider 101 on one side of the sealing plate 10 slides along the sliding groove 9 to its bottom, so that the sealing plate 10 can be quickly opened; pull the handle 27 toward the top of the gas meter housing 1, and the handle 27 drives the top holding assembly to move toward the top of the gas meter housing 1 as a whole. , the elastic plate 8 will push the limit plate 6 and the guide plate 7 to move into the open groove 16, and the sealing plate 10 will be supported again. Under the support of the spring on the outer ring of the positioning rod 14, the limit assembly as a whole will not be easily displaced; while the supporting assembly as a whole moves toward the top of the gas meter housing 1, the supporting ball 18 moves and fully fits with the inclined surface of the limiting ring 24, so that the rubber ball 23 supports the surface of the battery cover 3, ensuring that the battery cover 3 and the sealing ring 4 are fully fitted with the notch of the battery slot 2, thereby improving the sealing effect of the battery slot 2, facilitating the opening and closing of the sealing plate 10 as a whole, and ensuring that the battery slot 2 has good sealing performance.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A flame-retardant sealed gas meter housing assembly, comprising a gas meter housing (1), a sealing plate (10) being slidably connected to one side of the gas meter housing (1), a battery slot (2) being provided on one side of the gas meter housing (1), a battery cover (3) being rotatably connected to one side of the gas meter housing (1), one side of the battery cover (3) being fitted with a notch of the battery slot (2), and characterized in that: The bottom side of the sealing plate (10) is slidably connected to a top holding assembly, the bottom side of the gas meter housing (1) is slidably connected to a limit assembly, and the top holding assembly and the limit assembly are movably fitted; the middle side of the gas meter housing (1) is slidably connected to an auxiliary sealing assembly, the auxiliary sealing assembly is in movably contact with one side of the battery cover (3), and the top holding assembly limits the auxiliary sealing assembly.

2. The flame-retardant sealed gas meter case assembly according to claim 1, characterized in that: The sealing plate (10) is in a square plate-like structure. A slider (101) is fixedly connected to the top of one side of the sealing plate (10). The slider (101) is in a "T" shape. The slider (101) is slidably connected in a sliding groove (9). The sliding groove (9) is provided on one side of the gas meter housing (1). Two groups of sliders (101) are fixed. The two groups of sliders (101) are symmetrically distributed about the center of one side of the sealing plate (10), and one side of the sealing plate (10) is movably fitted with one side of the gas meter housing (1).

3. The flame-retardant sealed gas meter case assembly according to claim 1, characterized in that: The holding assembly comprises a movable plate (12), a holding plate (15), a connecting rod (17), a holding ball (18), and a handle (27). The movable plate (12) is a square plate. The movable plate (12) is slidably connected in the side groove (11). The side groove (11) is provided on one side of the bottom of the sealing plate (10). A limiting plate (6) is provided on the bottom of the side of the sealing plate (10) close to the battery slot (2). The limiting plate (6) is connected to the side groove (11). The limiting plate (6) is a square plate-shaped groove.

4. A flame-retardant sealed gas meter case assembly according to claim 3, characterized in that: The bottom surface of the side groove (11) is fixedly connected to a positioning rod (14) having a circular cylindrical structure. The positioning rod (14) passes through the through groove (13). The through groove (13) is provided on the top surface of the movable plate (12). The through groove (13) passes through to the bottom of the movable plate (12). A spring is fixedly connected between the bottom surface of the side groove (11) and the movable plate (12). The spring is sleeved on the outer ring surface of the positioning rod (14).

5. The flame-retardant sealed gas meter case assembly according to claim 3, characterized in that: The top holding plate (15) is an arc-shaped plate structure, and the top holding plate (15) is fixedly connected to the bottom of the movable plate (12); the connecting rod (17) is a circular rod, and the connecting rod (17) is fixedly connected to the top of the movable plate (12); the top holding ball (18) is a hemispherical structure, and the top holding ball (18) is fixedly connected to the top of the connecting rod (17).

6. The flame-retardant sealed gas meter case assembly according to claim 1, characterized in that: The sealing plate (10) is provided with a connecting groove (19) inside, the connecting groove (19) is connected with the auxiliary groove (20) and the side groove (11), the auxiliary groove (20) is provided on one side of the middle portion of the sealing plate (10) close to the battery slot (2), the auxiliary groove (20) is a circular groove, the connecting rod (17) is movably inserted into the connecting groove (19), and the top holding ball (18) is located in the auxiliary groove (20).

7. The flame-retardant sealed gas meter case assembly according to claim 4, characterized in that: The limiting assembly comprises a limiting plate (6), a guide plate (7), and an elastic plate (8); the limiting plate (6) is in a T-shaped plate structure; a receiving groove (5) in a T-shaped plate groove is provided on one side of the bottom of the gas meter housing (1); the limiting plate (6) is slidably connected in the receiving groove (5); the receiving groove (5) is connected to the outside of the gas meter housing (1); the guide plate (7) is in a semicircular plate structure; the guide plate (7) is fixedly connected to a side of the limiting plate (6) close to the outside of the gas meter housing (1), and the guide plate (7) is movably fitted with the arc surface of the top holding plate (15); and the elastic plate (8) is fixedly connected between one side of the limiting plate (6) and one side of the receiving groove (5).

8. The flame-retardant sealed gas meter case assembly according to claim 1, characterized in that: The auxiliary sealing assembly comprises an expansion plate (22), a rubber ball (23), a limiting ring (24), a side rod (25), and a support spring (26). The expansion plate (22) is a circular plate, the rubber ball (23) is a hemispherical structure, the rubber ball (23) is fixedly connected to one side of the expansion plate (22), and the rubber ball (23) is movably fitted with one side of the battery cover (3). The limiting ring (24) is an annular plate structure with a right-angled trapezoidal cross section. The limiting ring (24) is fixedly connected to the side of the expansion plate (22) opposite to the rubber ball (23), and the outer ring surface of the top holding ball (18) is movably fitted with the inclined surface of the limiting ring (24).

9. A flame-retardant sealed gas meter case assembly according to claim 8, characterized in that: An expansion slot (21) is provided on the side of the auxiliary slot (20), and the expansion slot (21) is an annular plate-shaped slot structure. The expansion plate (22) is slidably connected in the expansion slot (21), and a side rod (25) is fixedly connected to one side of the expansion plate (22). The side rod (25) is a circular rod, and the side rod (25) passes through the limiting ring (24). A support spring (26) is fixedly connected between one side of the expansion plate (22) and one side of the auxiliary slot (20), and the support spring (26) is sleeved on the outer ring surface of the side rod (25). A plurality of auxiliary sealing components are arranged side by side.

10. The flame-retardant sealed gas meter case assembly according to claim 3, characterized in that: The handle (27) is in a square frame structure. The handle (27) is fixed to a side of the movable plate (12) close to the outside of the gas meter housing (1), and the handle (27) passes through the side groove (11) and is located outside the gas meter housing (1).

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