Low-torque valve switching device and application

Abstract

The invention discloses a low-torque valve switching device and application. The low-torque valve switching device comprises a valve body, a valve cover, a valve core and a first stopping sheet, wherein the valve body and the valve cover form a valve cavity, openings are formed in the top, the left side and the right side of the valve cavity respectively, the valve core is located in the valve cavity, the valve core can rotate, and a horizontal through hole is formed in the valve core. A first groove is formed in the perpendicular direction of the horizontal through hole, and the arc-shaped first stopping sheet is located in the first groove. A second groove is formed in the perpendicular direction of the horizontal through hole of the valve core, the position of the second groove is opposite to that of the first groove, and a second stopping block is located in the second groove. The valve core further comprises a rotation shaft at the top, and the rotation shaft is located at an opening in the top of the valve cavity. The valve core is connected with a motor. The low-torque valve switching device can be used in low-power dissipation control valves, household calorimeters with valves and cold scales. The low-torque valve switching device is small in torque and easy to drive, effective switching-off of a valve is achieved by the arrangement of the stopping sheet, and the low-torque valve switching device is simple in structure, low in cost, strong in reliability, and applicable to long-distance control, electric control and large-scale application.

Description

technical field [0001] The valve switch device of the present invention relates to the field of control valves, in particular to the field of low power consumption control valves requiring battery power, such as heat metering and cold metering. The invention is suitable for battery-powered control valves, low-power consumption control valves, household heat meters and cold meters with valves, and the like. Background technique [0002] The control valve generally drives the valve through the rotation of the motor, so as to realize the opening and closing of the valve. There are many types of valves, such as ball valves, butterfly valves, gate valves, etc. [0003] In the prior art ball valve structure control valve, usually, the valve body and the valve core are filled with sealing material to ensure that the valve does not leak after the valve is closed. This sealing material forms the resistance when the valve core rotates, so that the valve The torque of the cor...

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Problems solved by technology

[0003] In the prior art ball valve structure control valve, usually, the valve body and the valve core are filled with sealing material to ensure that the valve does not leak after the valve is closed. This sealing material forms the resistance when the valve core rotates, so that the valve The torque of the core drive is relatively large, and it is impossible to achieve low-power valve drive

[0004] With the development of heat metering for urban central heating, it is becoming more and more important to invent a control valve that can achieve low torque, reduce the power consumption of the drive, and solve the problem of power supply for control valves and heat meters with valves. In the prior art, there is no reliable, practical and low-cost solution

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