Anti-freezing device for water meter

Abstract

The invention discloses an anti-freezing device for a water meter. The anti-freezing device comprises a water meter main body and a pipeline, wherein an anti-freezing heat preservation mechanism is connected between the water meter main body and the pipeline, and comprises a first heat preservation shell and a second heat preservation shell, anti-freezing heat preservation generation cavities areformed in the first heat preservation shell and the second heat preservation shell, humidity sensors are arranged in the anti-freezing heat preservation generation cavities, a power supply and a heating assembly are arranged in the second heat preservation shell, the power supply and the heating assembly are electrically connected with the humidity sensors, an electric heating wire is connected tothe heating assembly, and a vacuum suction generation mechanism is mounted in the second heat preservation shell. According to the invention, the corresponding anti-freezing heat preservation mechanism is arranged at the joint of the water meter and the pipeline, so that the probability that the connecting position of the water meter and the pipeline is frozen due to the external temperature canbe greatly reduced so as to protect the water meter, the problem that the water meter is internally damaged due to freezing is avoided so as to substantially prolong the service life of the water meter, and a user does not need to check regularly so as to substantially reduce the workload of the user.

Description

technical field [0001] The invention belongs to the technical field of water meters, and in particular relates to an antifreeze device for water meters. Background technique [0002] Water meters are instruments for measuring water flow. Most of them measure the cumulative flow of water. They are generally divided into two types: volumetric water meters and speed water meters. The internal structure of the water meter can be divided into three parts: the shell, the sleeve and the inner core from the outside to the inside. The shell is made of cast iron. After the water comes out of the water inlet, it passes through the lower annular space of the shell, which is called the "lower annular chamber". On the top of this annular space, there is an "upper annular chamber" which communicates with the water outlet. There is a filter screen with small holes at the bottom of the sleeve to filter out the sundries in the water. There are upper and lower rows of round holes on the sid...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an anti-freezing device for water meters to solve the problem that the internal structure of the water meters is easily damaged due to freezing when the above-mentioned water meters are used in winter

Images