Isolation type magnetic drive leak-proof apparatus for driving valve

Abstract

The invention provides an isolation-type magnetic-transmission leakage-proof valve driving device, which comprises a control motor, a magnetic transmission mechanism, a speed reduction device, a liquid sealing box and a valve stem, wherein the magnetic transmission mechanism comprises a plurality of input-end magnetic poles which are formed by high-performance magnetic steel and are fixed on the control motor, as well as output-end magnetic poles fixed on the speed reduction device; the liquid sealing box is formed by fixing an isolation layer with the lower wall of the sealing box through screws; the box is full of sealing liquid; the output-end magnetic poles and the input-end magnetic poles are correspondingly arranged on two sides of the isolation layer; the speed reduction device is arranged in a sealing cavity; and the lower wall of the sealing box is sealed at the position of the valve stem. Through magnetic transmission, the driving device realizes the synchronous operation of the control motor and the speed reduction device which are completely isolated. In addition, by providing the speed reduction device and the valve stem with the liquid sealing box, the driving device not only completely isolates the control motor from the speed reduction device, but also thoroughly cuts off the influence of water leakage caused by the deformation of an O-shaped sealing ring on the valve stem of a valve on the control motor or other electrical control appliance, so as to guarantee the functions of the valve.

Description

Technical field: [0001] The invention relates to an IC card intelligent water meter valve driving device, in particular to an isolated magnetic transmission leak-proof valve driving device which completely isolates a control motor from a deceleration device through magnetic transmission. Background technique: [0002] At present, the valve driving device of the IC card smart water meter used by most manufacturers is composed of a control motor, a deceleration mechanism, a valve stem and an O-ring. The deceleration mechanism is connected to the control motor and the valve stem respectively. The rotating speed slows down, and the torque is increased to push the valve stem to rotate to achieve the function of opening and closing the valve. The seal of the valve stem is basically sealed by an O-ring. It is impossible to seal the liquid under pressure in this way, especially for IC card smart water meters. It is more difficult, mainly in the following aspects: First, the power o...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an isolated magnetic transmission anti-leakage valve drive device in view of the above-mentioned deficiencies in the prior art. , and can overcome the leakage problem caused by the deformation of the O-ring due to frequent use for a long time and the problem of losing the function of the valve

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