[Invention of Instrumentation] Long life mother and daughter water meter
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The working principle of the existing meter water meter is generally when the flow rate is small, the large meter valve core is closed, and the small meter is measured. When the flow rate increases, the large meter valve core is pushed and the large meter starts to measure because the small meter is always in Work status, and the small meter's measurement accuracy is high, often when the large table also meets the accuracy requirements, the small meter will not meet the measurement accuracy because of long-term overload operation, the best method is when the flow is large Table metering and small meter not metering (that is, the inlet and outlet of the small meter can be closed), but due to the long distance between the inlet of the small meter and the spool of the large meter, the mechanical mechanism is quite complicated, if the electronic control is used The structure makes the structure of the water meter complex and inconvenient to install and the cost increases.
There is no limit to creativity, and instrumentation is invented. In view of the above, in order to overcome the shortcomings of the existing technology, today [instrumental invention] introduces a utility model patent that has been authorized by the State—a long life daughter water meter.
The water meter was invented by Ningbo Water Meter Co., Ltd. and was authorized to be announced on August 6, 2014.
In order to solve the above technical problem, the utility model is solved by the following technical solution: A long life daughter water meter includes a shell, the shell includes a first flow channel and a second flow channel, and the first flow channel is provided with In the large flowmeter, a small watch is disposed in the second flow passage, and a valve core is disposed on a rear side of the large flow meter in the first flow passage along a water flow direction, and the valve core includes a fixing portion and a sliding portion, and the fixing portion is fixed on the valve. In the case, the second flow passage outlet is located at the rear side of the valve core, and the sliding part is provided with a plug head matched with the second flow passage outlet, when the sliding part is pushed open, The plug seals the outlet of the second flow passage. When the water meter is working, when the water flow rate is small, the valve core is closed and water flows from the second flow passage through the small water meter. When the flow rate increases, the water pressure pushes the sliding part to move, and as the water flow gradually increases, When the sliding part moves, the plug on the sliding part gradually blocks the outlet of the second flow passage, and the water flow in the second flow passage gradually decreases until the water flow in the second flow passage is minimized when the sliding part is opened maximum. In this way, the rotation of the small table can be reduced, thereby extending the life of the small table and achieving a balance between the working life of the small table and the large table.
In the above technical solution, preferably, a cylindrical tube is disposed at the outlet of the second flow passage, and the outlet of the cylindrical tube cooperates with the plug. Since there is still a certain distance between the outlet of the second flow passage and the sliding portion, a cylindrical tube is provided for easy sealing.
Compared with the prior art, the utility model has the following beneficial effects: The daughter water meter of the utility model can reduce the flow of the small meter when the valve plug of the large meter is opened, and reduces the working time of the small meter, thereby improving the use of the small meter. Lifetime, balance between the working life of small and large tables.
For further understanding of the invention, the patent specification can be downloaded for detailed understanding. Download address: http://Technology/Detail/34271.html
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