Eccentric electric ball valve

Abstract

The invention discloses an eccentric electric ball valve which comprises a valve cap, a valve body, a support shaft gasket, a support shaft, an eccentric ball, a valve stem, an O-shaped ring, a speed reducer and a motor, wherein the speed reducer is connected with the valve stem, the head of the valve stem is in a geometric form matching with an eccentric hole arranged on the upper part of the eccentric ball, the valve stem is consequently enabled to drive the eccentric ball to rotate when opening or closing the valve, thus a structure that the eccentric ball surface makes cam type movement with the valve stem is formed, the lower end of the eccentric ball is supported and positioned by the support shaft, and a sealing seat and a sealing ring are arranged between the valve body and the eccentric ball to adjust a pressing force. The eccentric electric ball valve adopts the eccentric sphere which keeps no contact with the sealing ring for most of time of rotating, thereby reducing friction, driving torque and power consumption, and saving energy; the contact between the sphere and the sealing ring is reduced and consequently the wear of the sealing ring is also reduced, thereby greatly improving the service life of the valve.

Description

technical field [0001] The invention belongs to the technical field of valves, and relates to a valve automatically controlled by an electronic device, in particular to an eccentric electric ball valve. Background technique [0002] In the smart meter (such as water meter, gas meter, etc.) industry, most of the existing electric ball valves are electric ball valves with a ball and a sealing ring. During the opening and closing process of this kind of electric ball valve, the ball and the sealing ring are always in contact. In the use environment, due to the influence of the medium, the friction between the ball and the sealing ring is getting larger and larger, so that the resistance when the ball valve rotates is increasing. Large, the motor consumes a lot of power and has high requirements on the motor; at the same time, due to the long-term friction between the ball and the sealing ring, the sealing ring is worn, which directly affects the internal sealing index of the el...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned technical deficiencies of the electric ball valve and provide an eccentric electric ball valve with a novel structure that not only solves the problem of large rotational torque and high power when the electric ball valve is working, but also ensures no leakage when the valve is closed. ball valve

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