Gas meter shell with multi-stage sealing protection structure

Abstract

The utility model relates to the field of gas meter shells, in particular to a gas meter shell with a multi-stage sealing protection structure, which comprises a lower shell. The device is characterized in that an upper shell is arranged at the top end of a lower shell, two positioning blocks are arranged on each of two sides of the top surface of the lower shell, positioning grooves are formed in the top ends of the positioning blocks and located at the bottom end of the upper shell, the positioning blocks extend to the inner sides of the positioning grooves, and knobs are arranged below the positioning blocks and located at the bottom end of the lower shell; the top end of the knob penetrates through the lower shell and extends to the inner side of the positioning block, limiting blocks are arranged on two sides of the top surface of the positioning block, and limiting seats are arranged at one ends of the limiting blocks on the top surface of the upper shell; when the lower shell body and the upper shell body are connected, the lower shell body and the upper shell body are connected and positioned through the positioning blocks, the installation efficiency of the gas meter shell is improved, the rotary knobs at the bottom end of the lower shell body are rotated, one ends of the two limiting blocks are clamped into the inner sides of the limiting seats through the rotary knobs, and the lower shell body and the upper shell body can be fixed conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of gas meter cases, in particular to a gas meter case with a multi-stage sealing protection structure. Background Art

[0002] A gas meter is a tool that measures household gas usage. It relies on the pressure of the gas to generate work, pushing a roller counter to count. For ease of processing and maintenance, the gas meter's housing is typically enclosed in two parts, with an inlet and outlet located at the top of the upper housing. During metering, gas enters the meter through the inlet and flows out through the outlet, pushing the roller counter to calculate gas usage.

[0003] For example, patent No. CN213455689U discloses a steel structure with high protection gas meter shell, comprising an upper shell, a lower shell is arranged below the upper shell, a connecting flange is arranged between the upper shell and the lower shell, two connecting flanges are provided, and the two connecting flanges are respectively arranged as an integral structure with the upper shell and the lower shell, a connecting bolt is provided between the two connecting flanges, and the connecting bolt is threadedly connected to the connecting flange, an air inlet pipe and an air outlet pipe are arranged above the upper shell, and one end of the air inlet pipe and the air outlet pipe both pass through the upper shell and extend to the interior of the upper shell, the air inlet pipe and the air outlet pipe are both sealed with the upper shell, a steel structure protective grille is provided on one side of the upper shell and the lower shell, and the steel structure protective grille is connected to the side ends of the upper shell and the lower shell by screws, the distance between the steel structure protective grille and the upper shell and the lower shell is set to two centimeters, and an anti-slip support leg is provided below the lower shell, two anti-slip support legs are provided, and the two anti-slip support legs are connected to the lower shell by screws. The utility model provides a steel structure protective grid, an upper protective plate, and a guide groove. When external solid matter hits the gas meter, it will first contact and collide with the steel structure protective grid, thereby preventing the foreign matter from directly hitting the gas meter housing. When the upper protective plate drips water onto the gas meter, the guide groove on the upper protective plate can quickly divert the water from both sides, thereby preventing the water from accumulating on the gas meter for a long time. This solves the problem of preventing foreign matter from directly hitting the gas meter and quickly diverting water dripping onto the gas meter, thereby improving the protective performance of the gas meter. However, when the existing gas meter housing with a sealed protective structure is used by staff, the exterior of the gas meter housing is mostly fixed by multiple bolts. The bolts require tools to be installed and removed, and the multiple bolts are inconvenient to fix and disassemble, affecting the installation efficiency of the gas meter housing.

[0004] Therefore, in view of the problem that the gas meter case with the above-mentioned existing sealing and protective structure is mostly fixed and connected by multiple bolts during use by staff, and the bolts need to be disassembled and disassembled with tools, and multiple bolts are not convenient for fixing and disassembling, which affects the installation efficiency of the gas meter case. Therefore, a gas meter case with a multi-stage sealing and protective structure can be designed, in which when the lower shell is connected to the upper shell, the lower shell and the upper shell are connected and positioned by positioning blocks, thereby improving the installation efficiency of the gas meter case, and by rotating the knob at the bottom end of the lower shell, the knob causes one end of the two limit blocks to be stuck into the inner side of the limit seat, thereby facilitating the fixation of the lower shell and the upper shell. Utility Model Content

[0005] In order to overcome the problems of poor functionality and lack of cleaning structure of existing lighting devices.

[0006] The technical solution of the utility model is as follows: a gas meter case with a multi-stage sealing protection structure, comprising an upper shell provided at the top of a lower shell, two positioning blocks provided on both sides of the top surface of the lower shell, the top of the positioning block is located at the bottom end of the upper shell and is provided with a positioning groove, the positioning block extends to the inner side of the positioning groove, a knob is provided at the bottom end of the lower shell below the positioning block, the top of the knob penetrates the lower shell and extends to the inner side of the positioning block, and limit blocks are provided on both sides of the top surface of the positioning block, one end of the limit block is located at the top surface of the upper shell and is provided with a limit seat, one end of the limit block extends through the outer side of the limit seat, the top of the limit block is provided with a top block movably connected, and the rear end of the top block is in contact with the outer end surface of the limit seat;

[0007] When the lower shell is connected to the upper shell, the lower shell and the upper shell are connected and positioned by the positioning block, which improves the installation efficiency of the gas meter case, and by rotating the knob at the bottom end of the lower shell, the knob causes one end of the two limit blocks to be stuck into the inner side of the limit seat, making it easier to fix the lower shell and the upper shell.

[0008] Preferably, the lower shell and the positioning block are an integrated structure, the positioning block and the positioning slot are consistent in shape and size, and the top end of the positioning block is inserted into the inner side of the positioning slot.

[0009] Preferably, a first movable groove is provided below the limit block and on the inner side of the positioning block, and the bottom end of the limit block extends to the inner side of the first movable groove.

[0010] Preferably, one end of the limit block is located on the inner side of the first movable groove and is provided with a screw rod, one end of the screw rod passes through the limit block and extends to the other end of the inner wall of the first movable groove, and the screw rod and the limit block are engaged with each other.

[0011] Preferably, two screw rods are provided, one end of the knob is located on the inner side of the positioning block and a transmission gear is provided, one end of the transmission gear is located on the opposite side of the two screw rods, and a bevel gear is provided at the intersection of the two screw rods and the transmission gear, and the transmission gear is connected to the two screw rods through the bevel gear.

[0012] Preferably, the bottom end of the top block is located on the inner side of the limit block and is provided with a second movable groove, the inner side of the second movable groove is provided with a spring, the second movable groove and the spring are fixedly connected by bolts, and the top block is movably connected to the limit block through the spring.

[0013] Preferably, a sealing strip is provided on one end of the opposite surfaces of the lower shell and the upper shell.

[0014] Beneficial effects of the utility model:

[0015] When the lower shell is connected to the upper shell, the lower shell and the upper shell are connected and positioned by the positioning block, thereby improving the installation efficiency of the gas meter case, and by rotating the knob at the bottom end of the lower shell, the knob drives the two screw rods to rotate through the transmission gear. Since the two screw rods and the limit block are engaged with each other, one end of the limit block is stuck in the inner side of the limit seat during the rotation of the screw rod, which facilitates the fixation of the lower shell and the upper shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 What is shown is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 Shown is a schematic diagram of the structure of the positioning block of the utility model;

[0018] Figure 3 Shown is a schematic diagram of the internal structure of the positioning block of the utility model;

[0019] Figure 4 Shown is a schematic diagram of the structure of the top block of the utility model.

[0020] Explanation of the accompanying drawings: 1. Lower shell; 2. Upper shell; 3. Knob; 4. Positioning groove; 5. Positioning block; 6. First movable groove; 7. Limit block; 8. Limit seat; 9. Screw rod; 10. Transmission gear; 11. Top block; 12. Second movable groove; 13. Spring. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See also Figures 1-4The utility model provides a technical solution: a gas meter case with a multi-stage sealing protection structure, comprising a lower shell 1, an upper shell 2 is provided at the top of the lower shell 1, a sealing strip is provided at one end of the opposite surface of the lower shell 1 and the upper shell 2, two positioning blocks 5 are provided on both sides of the top surface of the lower shell 1, the top end of the positioning block 5 is located at the bottom end of the upper shell 2 and a positioning groove 4 is provided, the positioning block 5 extends to the inner side of the positioning groove 4, the lower shell 1 and the positioning block 5 are an integrated structure, the positioning block 5 and the positioning groove 4 are consistent in shape and size, the top end of the positioning block 5 is inserted into the inner side of the positioning groove 4, thereby facilitating the connection and positioning of the lower shell 1 and the upper shell 2 through the positioning block 5, thereby improving the installation efficiency of the gas meter case;

[0023] See also Figure 2-Figure 3 In this embodiment, a knob 3 is provided at the bottom end of the lower shell 1 below the positioning block 5. The top end of the knob 3 passes through the lower shell 1 and extends to the inner side of the positioning block 5. Limit blocks 7 are provided on both sides of the top surface of the positioning block 5. One end of the limit block 7 is located on the top surface of the upper shell 2 and is provided with a limit seat 8. One end of the limit block 7 extends through the outside of the limit seat 8. A first movable groove 6 is provided on the inner side of the positioning block 5 below the limit block 7. The bottom end of the limit block 7 extends to the inner side of the first movable groove 6. One end of the limit block 7 is located on the inner side of the first movable groove 6 and is provided with a screw rod 9. One end of the screw rod 9 passes through the limit block 7 and extends to the other end of the inner wall of the first movable groove 6. The screw rod 9 and the limit block 7 mesh with each other, there are two screw rods 9, one end of the knob 3 is located on the inner side of the positioning block 5 and a transmission gear 10 is provided, one end of the transmission gear 10 is located on the opposite side of the two screw rods 9, and a bevel gear is provided at the intersection of the two screw rods 9 and the transmission gear 10. The transmission gear 10 is connected to the two screw rods 9 through the bevel gears, and then after the lower shell 1 and the upper shell 2 are positioned and connected, by rotating the knob 3, the knob 3 drives the two screw rods 9 to rotate through the transmission gear 10. Since the two screw rods 9 are meshed with the limit block 7, one end of the limit block 7 is stuck in the inner side of the limit seat 8 during the rotation of the screw rod 9, which is convenient for fixing the lower shell 1 and the upper shell 2;

[0024] See also Figure 3-Figure 4 In this embodiment, the top of the limit block 7 is provided with a top block 11 that is movably connected. The rear end of the top block 11 is in contact with the outer end surface of the limit seat 8. The bottom end of the top block 11 is located on the inner side of the limit block 7 and is provided with a second movable groove 12. A spring 13 is provided on the inner side of the second movable groove 12. The second movable groove 12 and the spring 13 are fixedly connected by bolts. The top block 11 is movably connected to the limit block 7 through the spring 13, and then the connection between the lower shell 1 and the upper shell 2 is auxiliary supported by the top block 11.

[0025] During operation, when the lower shell 1 is connected to the upper shell 2, two positioning blocks 5 are provided on both sides of the top surface of the lower shell 1, and the top of the positioning block 5 is located at the bottom end of the upper shell 2 and a positioning groove 4 is provided. One end of the positioning block 5 is inserted into the inner side of the positioning groove 4, which facilitates the connection and positioning of the lower shell 1 and the upper shell 2 through the positioning block 5, thereby improving the installation efficiency of the gas meter case. After the lower shell 1 is positioned and connected with the upper shell 2, the knob 3 is rotated, and the knob 3 drives the two screw rods 9 to rotate through the transmission gear 10. Since the two screw rods 9 are engaged with the limit block 7, one end of the limit block 7 is stuck in the inner side of the limit seat 8 during the rotation of the screw rod 9, which facilitates the fixation of the lower shell 1 and the upper shell 2.

[0026] Through the above steps, the lower shell 1 and the upper shell 2 are connected and positioned by the positioning block 5, and the knob 3 is rotated so that one end of the two limit blocks 7 is stuck in the inner side of the limit seat 8, so that the lower shell 1 and the upper shell 2 are fixed. This solves the problem that the gas meter case with an existing sealing protective structure is mostly fixed by multiple bolts during use by staff, and the bolts need to be disassembled using tools and multiple bolts are not convenient for fixing and disassembling, which affects the installation efficiency of the gas meter case.

Claims

1. A gas meter housing with a multi-stage sealing protection structure, comprising a lower housing (1); characterized in that: The top of the lower shell (1) is provided with an upper shell (2), and two positioning blocks (5) are provided on both sides of the top surface of the lower shell (1). The top of the positioning block (5) is located at the bottom end of the upper shell (2) and is provided with a positioning groove (4). The positioning block (5) extends to the inner side of the positioning groove (4). A knob (3) is provided below the positioning block (5) and is located at the bottom end of the lower shell (1). The top of the knob (3) passes through the lower shell (1) and extends to the inner side of the positioning block (5). Both sides of the top surface of the positioning block (5) are provided with a limit block (7). One end of the limit block (7) is located at the top surface of the upper shell (2) and is provided with a limit seat (8). One end of the limit block (7) extends through the outer side of the limit seat (8). The top of the limit block (7) is provided with a top block (11) that is movably connected, and the rear end of the top block (11) is in contact with the outer end surface of the limit seat (8).

2. The gas meter case with a multi-stage sealing protection structure according to claim 1, characterized in that: The lower shell (1) and the positioning block (5) are an integrated structure. The positioning block (5) and the positioning groove (4) are consistent in shape and size. The top end of the positioning block (5) is inserted into the inner side of the positioning groove (4).

3. The gas meter case with a multi-stage sealing protection structure according to claim 1, characterized in that: A first movable groove (6) is provided below the limit block (7) and located inside the positioning block (5), and the bottom end of the limit block (7) extends to the inside of the first movable groove (6).

4. The gas meter case with a multi-stage sealing protection structure according to claim 1, characterized in that: One end of the limit block (7) is located inside the first movable groove (6) and is provided with a screw rod (9). One end of the screw rod (9) passes through the limit block (7) and extends to the other end of the inner wall of the first movable groove (6). The screw rod (9) and the limit block (7) are engaged with each other.

5. The gas meter case with a multi-stage sealing protection structure according to claim 1, characterized in that: Two screw rods (9) are provided, one end of the knob (3) is located inside the positioning block (5) and is provided with a transmission gear (10), one end of the transmission gear (10) is located on the opposite side of the two screw rods (9), and a bevel gear is provided at the intersection of the two screw rods (9) and the transmission gear (10), and the transmission gear (10) is connected to the two screw rods (9) through the bevel gear.

6. The gas meter case with a multi-stage sealing protection structure according to claim 1, characterized in that: The bottom end of the top block (11) is located inside the limiting block (7) and is provided with a second movable groove (12). A spring (13) is provided inside the second movable groove (12). The second movable groove (12) and the spring (13) are fixedly connected by bolts. The top block (11) is movably connected to the limiting block (7) via the spring (13).

7. The gas meter case with a multi-stage sealing protection structure according to claim 1, characterized in that: Sealing strips are provided at one end of the opposite surfaces of the lower shell (1) and the upper shell (2).

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