Rocker limiting structure

Abstract

The utility model provides a rocker limiting structure, which is characterized in that rockers are arranged on two sides of an air outlet pipe, and the air outlet pipe is provided with a bulge structure for limiting the upward movement of the top ends of the rockers. When the rocker rotates, the top end of the rocker is limited at the position of the protruding structure, the situation that the rocker moves upwards to cause wrinkling of a leather film during movement is prevented, and the influence on the service life of the leather film and errors of a gas meter is reduced.

Description

Technical Field

[0001] The utility model provides a rocker limit structure, belonging to the technical field of membrane gas meters. Background Art

[0002] The diaphragm gas meter uses the pressure difference of the gas flowing in the meter body as the power, and controls the distribution of the gas flow direction by the relative position of the valve seat and the valve cover. The diaphragm box of the gas meter is composed of two identical gas measuring chambers on the left and right, and each gas measuring chamber is divided into two identical small metering chambers by a soft diaphragm. When the distributed gas enters the four small metering chambers in turn, it pushes the diaphragm to swing freely. The movement of the diaphragm assembly drives the double crank rocker mechanism of the connecting rod mechanism through the rocker and causes the valve cover to rotate, thereby controlling the filling and exhaust of each metering chamber in turn, so that the gas meter can continuously circulate. At the same time, the eccentric rotating gear of the connecting rod mechanism drives the mechanical one-way counter to count through the transmission of the gear, and finally the exhaust volume of the gas meter is displayed through the counter.

[0003] If the rocker exceeds a certain range during movement, the membrane will easily wrinkle, affecting its service life. Summary of the invention

[0004] The technical problem to be solved by the utility model is: how to prevent the film from wrinkling.

[0005] In order to solve the above technical problems, the utility model provides a rocker limiting structure, wherein there are two rockers, which are respectively arranged on both sides of an air outlet pipe, and the air outlet pipe is provided with a protruding structure for limiting the upward movement of the top end of the rocker.

[0006] The utility model can limit the top end of the rocker at the raised structure when the rocker is rotating, thereby preventing the rocker from moving upwards during movement to cause wrinkles on the membrane, thereby reducing the impact on the service life of the membrane and the error of the gas meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the rocker limiting structure provided by the utility model. DETAILED DESCRIPTION

[0008] In order to make the present invention more obvious and easy to understand, preferred embodiments are described in detail as follows in conjunction with the accompanying drawings.

[0009] Example

[0010] like Figure 1 As shown, a rocker limiting structure provided by the utility model is provided. The diaphragm gas meter has two rockers 1. An air outlet pipe 2 is arranged between the two rockers 1. The air outlet pipe 2 is provided with a protruding structure 3 for limiting the upward movement of the top end of the rocker.

Claims

1. A rocker limit structure, characterized in that: There are two rocking arms (1), which are respectively arranged on both sides of the air outlet pipe (2). The air outlet pipe (2) is provided with a protruding structure (3) for limiting the upward movement of the top end of the rocking arm.

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