Water supply pipeline throttle valve

Abstract

The invention discloses a water supply pipeline throttle valve. The water supply pipeline throttle valve comprises a valve body; and a hand wheel is arranged on an output shaft at the upper end of thevalve body. The water supply pipeline throttle valve is characterized in that a rotation preventing device is arranged on the hand wheel; the rotation preventing device comprises a rotation preventing sleeve, rolling balls and buffer springs; a rotation preventing rail is arranged in the outer peripheral direction of the hand wheel; the hand wheel is sleeved with the rotation preventing sleeve; blind holes are formed in the periphery of the inner wall of the rotation preventing sleeve at intervals; the buffer springs and the rolling balls are arranged in the blind holes; the rolling balls arein rolling connection with the rotation preventing rail under the effect of the buffer springs; when the rotation preventing sleeve at the external of a handle on the throttle valve is touched, the rotation preventing sleeve is rotated in the peripheral direction of the rotation preventing rail under the effect of the rolling balls to prevent the openness change caused by touching of the handlesby external objects or persons; and due to the structure, the water supply pipeline throttle valve has such advantages as simple structure, prevention of wrong rotation of the throttle valve and examination convenience.

Description

technical field [0001] The invention relates to the technical field of water supply systems, in particular to a throttle valve for water supply pipelines. Background technique [0002] At present, the throttle body has no opening indication, and the flow meter on the water supply pipeline reflects the opening of the throttle valve. The opening of the throttle valve is easily touched by mistake, causing the opening to change. When the water flow rate is low, it is impossible to accurately judge whether the flow is caused by the change of the throttle valve opening or other reasons. Contents of the invention [0003] The purpose of the present invention is to solve the disadvantages of the prior art, and provide a throttle valve of a water supply pipeline which has a simple structure and avoids mis-rotation of the throttle valve. [0004] The technical solution adopted by the present invention to solve its technical problems is: [0005] A throttle valve for a water supply...

AI Technical Summary

Problems solved by technology

The opening of the throttle valve is easily touched by mistake, resulting in changes in the opening. When the water flow is low, it is impossible to accurately judge whether the low flow is caused by the change of the throttle valve opening or other reasons.

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