Today, I will introduce a national invention authorized patent-a diaphragm gas meter and its measuring movement. The patent was applied for by Sichuan Haili Intelligent Technology Co., Ltd., and the authorization was announced on March 22, 2017.
Content descriptionThe utility model relates to the technical field of gas meters, in particular to a membrane gas meter and its measuring core.
Background of the inventionAt present, the diaphragm gas meter occupies a leading position in the field of household and industrial and commercial gas measurement, with an annual output of more than 20 million units in the country. The most critical component of the diaphragm gas meter is the metering movement of the gas meter. The metering performance of the diaphragm gas meter depends on the performance of the movement. The importance of the performance and structural optimization of the movement is very prominent.
At present, the metering cores of gas meters used in China mainly include the following four types: one is a point-symmetrical parallel slide valve structure, which is mainly used in the structure of industrial and commercial watches. Due to the complex structure, the manufacturing accuracy is not easy to guarantee. In, this model has been eliminated. The second is a point-symmetrical rotation structure, and the third is a parallel-symmetrical rotation structure. Both of these structures use a rotary slide valve structure. The main parts of the product are highly integrated, have high manufacturing precision, facilitate mass and efficient assembly, and have the advantages of good product consistency. At the same time, because the slide valve is small, the driving torque is not required, and the long-term operation is reliable. Compared with the parallel slide valve or linear slide valve structure, the slide valve has less deformation and easier to ensure accuracy. Therefore, the above two structures are generally used in household meters. The fourth type is the cross linear slide valve structure. Mainly exists in a small part of household gas meter products. This model product has the advantages of long driving force arm and large driving force of the spool valve, but it also has the disadvantages of complicated structure design and difficult deformation control of the spool valve. Therefore, it has been used less.
How to make the metering core of the diaphragm gas meter easier to arrange is a technical problem that needs to be solved by those skilled in the art at present.
Summary of the inventionIn view of this, the purpose of the present invention is to provide a metering movement, which facilitates the arrangement of various parts and reduces the cost. Another object of the present invention is to provide a diaphragm gas meter including the above-mentioned metering movement.
In order to achieve the above objective, the present utility model provides the following technical solution: a metering core of a diaphragm gas meter, comprising a core body, a transition wheel and an output wheel, the center of the output wheel and the center of the transition wheel are both Located on the vertical center surface of the movement.
Preferably, in the above-mentioned metering movement, the center of the output wheel is located on the vertical center line of the movement body. The transition wheel is a spur gear. The output wheel includes a disk body, the disk surface of the disk body is arranged perpendicular to the disk surface of the transition wheel, one side of the disk body is provided with teeth meshing with the transition wheel and the other side is provided with Output rod.
A diaphragm gas meter includes the metering movement as described in any one of the above items. The metering core of the diaphragm gas meter provided by the utility model includes a core body, a transition wheel and an output wheel. In this solution, the center of the output wheel and the center of the transition wheel are both arranged on the vertical center surface of the core body. With this arrangement, the output wheel of the diaphragm gas meter can be centered, and the eccentricity between the output wheel and the center of the core body can be eliminated. Therefore, the overall volume of the gas meter can be greatly reduced, and it is also more convenient for the display mechanism of the gas meter. installation. This solution does not need to be provided with redundant transition wheels and other parts, which not only reduces the manufacturing cost, but also facilitates the installation and arrangement of the parts.
The utility model also provides a diaphragm gas meter including the above-mentioned measuring core. The derivation process of the beneficial effects produced by the diaphragm gas meter is roughly similar to the derivation process of the beneficial effects brought about by the above-mentioned metering movement, so it will not be repeated here.
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