External anti-backflow mechanism for water meter in high-fall installation environment
An installation environment, external connection technology, applied in the direction of valve device, valve casing structure, mechanical equipment, etc., can solve the problems of national resource loss, water backflow, inaccurate water counting, etc., and achieve poor sealing effect and strengthen sealing. Effect
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[0051] see Figure 1-Figure 10 As shown, the purpose of this embodiment is to provide an external anti-backflow mechanism for a water meter installed in a high-drop environment, including a valve body 1 and a first backstop device 5 and a second backstop device installed in the inner cavity of the valve body 1 6. The second backstop device 6 includes at least:
[0052] The water blocking part 601, the water blocking part 601 includes a second valve flap 6011, a water stopper 6012 is fixedly connected to the center of the lower surface of the second valve flap 6011, and a guide rod 602 is fixedly connected to the center of the upper surface of the second valve flap 6011 , a slider 6021 is provided on the surrounding side walls of the guide rod 602;
[0053] The fixed part 4 is installed on the top of the connecting pipe 3. The fixed part 4 includes a valve cover 401. A screw hole 4011 is provided at the center of the upper surface of the valve cover 401, and a screw hole 4011 ...
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