Gas meter with anti-reversal mechanism

Abstract

The utility model discloses a gas meter with an anti-reversal mechanism, comprising: a gas meter housing, an anti-reversal mechanism installed inside the gas meter housing; the anti-reversal mechanism comprises brackets installed on both sides of the gas meter housing, a support seat connected between the brackets, a gear arranged on the upper end of the support seat, a ratchet wheel and a pawl clamped on one side of the ratchet wheel installed on one side of the ratchet wheel. The gear can drive the rotating wheel connected at the lower end to rotate when the gas enters, and the gear meshes with the ratchet wheel for transmission, so that the rotating wheel can be driven during the rotation process, and the pawl is clamped and limited when the reversal occurs, so as to avoid the gas meter measurement error caused by the reversal, resulting in losses to the gas company, and also to avoid the situation that the flame becomes smaller or no fire occurs after the fire is ignited.

Description

Technical Field

[0001] The utility model relates to the technical field of gas meters, in particular to a gas meter with an anti-reversal mechanism. Background Art

[0002] The only thing you can see on the outside of the gas meter is a digital roller in a small glass window. The roller also has seven digits, with the first four digits of the decimal point in black and the last three digits in red. The automatic accumulation function of the gas meter makes it easy to know how much gas is used when using natural gas or pipeline gas, so that you can pay according to the cubic meters of gas consumed each month.

[0003] The counters in the gas meters currently in use can only rotate in one direction and display values. After understanding the working principle of the gas meter, some lawless personnel connect the air inlet and outlet of the diaphragm gas meter to the air outlet and air inlet of the gas pipe respectively through the reverse pipe connection. At this time, the trajectory of the continuous cycle movement in the gas meter is opposite to the normal working state. When rotating in the reverse direction, the counter cannot count normally and reverse rotation occurs, causing the counter to count in the reverse direction, thus stealing gas by using the reverse pipe connection, causing losses to the gas company. Utility Model Content

[0004] The utility model aims at the problem that in the prior art, when the counter meter rotates in the reverse direction, it cannot count normally, and reverse rotation occurs, so that the counter counts in the reverse direction, thereby stealing gas by taking advantage of the reverse pipe line, causing losses to the gas company, and proposes the following technical solutions:

[0005] A gas meter with an anti-reversal mechanism, comprising:

[0006] A gas meter housing, wherein an anti-reversal mechanism is installed inside the gas meter housing;

[0007] The anti-reversal mechanism includes brackets installed on both sides of the gas meter housing, a support seat is connected between the brackets, a gear is arranged on the upper end of the support seat, a ratchet is installed on one side of the support seat, and a pawl is clamped on one side of the ratchet.

[0008] As an improvement of the above technical solution, a rotating shaft is installed in the middle of the gear and passes through the middle of the support seat, and the gear and the ratchet are meshed with each other.

[0009] As an improvement of the above technical solution, the pawl is installed on one side of the support seat through a fixed shaft, and a torsion spring is also installed between the pawl and the fixed shaft. A groove is opened on the side wall of the ratchet, and the pawl is engaged in the groove when the ratchet rotates counterclockwise.

[0010] As an improvement of the above technical solution, the gas meter housing includes a shell, a runner is installed in the middle of the shell, and an air hole is opened on one side of the shell.

[0011] As an improvement of the above technical solution, a crank-connecting rod mechanism is also installed inside the gas meter housing, and the crank-connecting rod mechanism includes a crank installed on both sides of the gas meter housing, one end of the crank is connected to a connecting rod, one end of the connecting rod is connected to a mounting frame, and one end of the mounting frame is connected to a connecting rod.

[0012] As an improvement of the above technical solution, the mounting frame is installed on one side of the upper end of the rotating wheel and is fixed by an eccentric shaft, and one end of the connecting rod is connected to the lower end of the rotating shaft installed in the middle of the gear.

[0013] Beneficial effects of the utility model:

[0014] The gears can drive the wheel connected to the lower end to rotate when gas enters, and the gears engage the ratchet to transmit the power, so that it can be driven during the rotation. At the same time, the ratchet is used to limit the position when reversal occurs, thereby avoiding gas meter measurement errors caused by reversal, causing losses to the gas company, and also avoiding the situation where the flame becomes smaller or no fire occurs after ignition with a fire tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a top view of the overall structure of the utility model;

[0016] Figure 2 This is a top view of the crank-connecting rod mechanism installed on the casing of the gas meter of the utility model;

[0017] Figure 3 It is a rear view of the ratchet engaging pawl of the utility model.

[0018] Figure numerals: 1. gas meter casing; 11. shell; 12. rotor; 13. air hole; 2. anti-reversal mechanism; 21. bracket; 22. support seat; 23. gear; 24. ratchet; 25. pawl; 3. crank-connecting rod mechanism; 31. crank; 32. connecting rod; 33. mounting frame; 34. connecting rod. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0020] Example

[0021] A gas meter with an anti-reversal mechanism, comprising:

[0022] A gas meter housing 1, wherein an anti-reversal mechanism 2 is installed inside the gas meter housing 1;

[0023] The gas meter housing 1 comprises a housing 11, a runner 12 is installed in the middle of the housing 11, and an air hole 13 is opened on one side of the housing 11;

[0024] The entire structure can be installed through the shell 11, and a gas metering mechanism is installed inside to facilitate the metering of the gas during the use of the gas. A pressurizing mechanism is also provided to ensure that the pressure drop of the gas can be reduced when the gas passes through, so as to avoid the flame becoming smaller or no fire after ignition with a fire tool. The pressurizing mechanism can be driven to work by the rotating wheel 12 to improve the use efficiency, and the gas is discharged through the air hole 13 to improve the pressurization effect.

[0025] The anti-reversal mechanism 2 includes brackets 21 installed on both sides of the gas meter housing 1, a support seat 22 is connected between the brackets 21, a gear 23 is arranged on the upper end of the support seat 22, a ratchet 24 is installed on one side of the support seat 22, and a pawl 25 is clamped on one side of the ratchet 24;

[0026] The support seat 22 can be supported by the bracket 21, making it more stable during operation. At the same time, the support seat 22 can install and fix the gear 23 and the ratchet 24 to ensure stability during anti-reversal. At the same time, the gear 23 can be used to drive the rotating wheel 12 connected at the lower end to rotate when it rotates, and drive the pressurizing mechanism to work so that the pressure will not decrease during output. The transmission is carried out by engaging the ratchet 24 with the gear 23, so that it can be driven during the rotation, and the ratchet 25 is used to engage and limit the position when reversal occurs, thereby avoiding gas meter measurement errors caused by reversal, causing losses to the gas company, and also avoiding the situation where the flame becomes smaller or no fire occurs after ignition with a fire tool.

[0027] As an improvement of the above technical solution, a rotating shaft is installed in the middle of the gear 23 and passes through the middle of the support seat 22. The gear 23 and the ratchet 24 are meshed with each other, which can make it more stable when rotating. At the same time, the ratchet 24 can be driven to rotate when the gear 23 rotates, so as to facilitate anti-reversal work.

[0028] As an improvement of the above technical solution, the pawl 25 is installed on one side of the support seat 22 through a fixed shaft, and a torsion spring is also installed between the pawl 25 and the fixed shaft. A groove is provided on the side wall of the ratchet 24, and the pawl 25 is engaged in the groove when the ratchet 24 rotates counterclockwise. The pawl 25 can be engaged with the surface of the ratchet 24 through the torsion of the torsion spring when rotating, which is convenient for providing a limiting force engagement during reversal and improving the efficiency of anti-reversal.

[0029] In order to drive the pressurizing mechanism to work normally and provide stability, a crank-connecting rod mechanism 3 is also installed inside the gas meter housing 1. The crank-connecting rod mechanism 3 includes a crank 31 installed on both sides of the gas meter housing 1, one end of the crank 31 is connected to a connecting rod 32, one end of the connecting rod 32 is connected to a mounting frame 33, and one end of the mounting frame 33 is connected to a connecting rod 34;

[0030] When the crank 31 is connected to the mounting frame 33 through the connecting rod 32, it can be more stable during operation to avoid damage caused by excessive rotation. At the same time, it is connected to the rotating shaft at the lower end of the gear 23 through the connecting rod 34 to facilitate the connection of the anti-reversal mechanism 2, so that it can be more stable during reversal.

[0031] As an improvement of the above technical solution, the mounting frame 33 is installed on one side of the upper end of the wheel 12 and fixed by an eccentric shaft. One end of the connecting rod 34 is connected to the lower end of the rotating shaft installed in the middle of the gear 23, which can further improve the stability during anti-reverse rotation and also provide stability for the pressurizing mechanism when it is working, thereby enhancing the overall stability of the gas meter.

[0032] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A gas meter with an anti-reversal mechanism, characterized in that: include: A gas meter housing (1), wherein an anti-reversal mechanism (2) is installed inside the gas meter housing (1); The anti-reversal mechanism (2) comprises brackets (21) mounted on both sides of the gas meter housing (1), a support seat (22) being connected between the brackets (21), a gear (23) being arranged at the upper end of the support seat (22), a ratchet (24) being mounted on one side of the support seat (22), and a ratchet pawl (25) being clamped on one side of the ratchet (24).

2. The gas meter with an anti-reversal mechanism according to claim 1, characterized in that: A rotating shaft is installed in the middle of the gear (23) and penetrates the middle of the support seat (22). The gear (23) and the ratchet (24) are meshed with each other.

3. The gas meter with an anti-reversal mechanism according to claim 1, characterized in that: The pawl (25) is installed on one side of the support seat (22) through a fixed shaft, and a torsion spring is installed between the pawl (25) and the fixed shaft. A groove is provided on the side wall of the ratchet (24), and the pawl (25) is engaged in the groove when the ratchet (24) rotates counterclockwise.

4. The gas meter with an anti-reversal mechanism according to claim 1, characterized in that: The gas meter housing (1) comprises a shell (11), a rotating wheel (12) is installed in the middle of the shell (11), and an air hole (13) is opened on one side of the shell (11).

5. The gas meter with an anti-reversal mechanism according to claim 1, characterized in that: A crank-connecting rod mechanism (3) is also installed inside the gas meter housing (1), and the crank-connecting rod mechanism (3) comprises a crank (31) installed on both sides of the gas meter housing (1), one end of the crank (31) is connected to a connecting rod (32), one end of the connecting rod (32) is connected to a mounting frame (33), and one end of the mounting frame (33) is connected to a connecting rod (34).

6. The gas meter with an anti-reversal mechanism according to claim 5, characterized in that: The mounting frame (33) is mounted on one side of the upper end of the rotating wheel (12) and is fixed via an eccentric shaft. One end of the connecting rod (34) is connected to the lower end of the rotating shaft mounted in the middle of the gear (23).

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