Valve opening degree detection device

A detection device, valve opening technology, applied in valve device, valve operation/release device, valve details, etc., can solve the problems of needing more space and troublesome adjustment operation, so as to improve work efficiency, save space, reduce The effect of the number of parts

Inactive Publication Date: 2010-01-13
TOMOE TECH RES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, this valve opening detection device has a large number of components, and the increase in the number of limit switches requires more space in the struc

Method used

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  • Valve opening degree detection device
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  • Valve opening degree detection device

Examples

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Example Embodiment

[0020] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. figure 1 Among them, (1) is the cam unit, (2) is the limit switch unit. figure 1 It is a perspective view of the entire valve opening detection device (3) in a valve device (not shown) having a cam unit (1) and a limit switch unit (2) applicable to the present invention. Such as figure 1 As shown, the valve opening detection device (3) in this embodiment has a bottomed, substantially box-shaped housing ( 4) And a substantially plate-shaped cover (5) that closes the upper opening. A cam unit (1) including a detection shaft (6) vertically erected from the bottom surface of the housing (4) is provided at the approximate center of the housing (4). Close to the cam unit (1), a limit switch unit (2) is arranged close to the cam unit (1), which is linked with a certain action of the cam unit (1) for ON / OFF operation.

[0021] The main component of the cam unit (1), the d...

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Abstract

A valve opening degree detection device using a reduced number of parts, occupying less space, allowing multiple switches to be adjusted by a single adjustment, performing ON/OFF control of a switch at a desired angle, and enhancing work efficiency. ¢MEANS FOR SOLVING PROBLEMS! The valve opening degree detection device has a detection shaft rotating in synchronism with a valve rod corotating with a valve body of a valve device. A worm gear is connected to the detection shaft so as to corotate with it, a tubular member is rotatably fitted over the detection shaft, and a cam having a worm wheel meshing with the worm gear is corotatably connected to the tubular member. The limit switches are operated by the above construction.

Description

technical field [0001] The present invention relates to a device for detecting the fully closed and fully open positions of the valve body of a valve device and sending the ON / OFF control signal of the motor for driving the valve body. It is a valve opening detection device that determines or changes the fully open and fully closed positions of the body and the actuating position of the limit switch that sends out the ON / OFF control signal of the motor. Background technique [0002] Valve body drives in valve devices such as butterfly valves and ball valves often use electric motors as the drive source. This actuator has an output shaft connected to the valve stem of the valve body that rotates the valve device, through a cam installed on the output shaft or a detection shaft synchronized with the valve stem and a limit switch actuated by the cam , detect the fully closed and fully open position of the valve body, turn the electric motor ON / OFF, and place the valve body in ...

Claims

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Application Information

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IPC IPC(8): F16K37/00F16K31/04H01H19/62
CPCF16K37/0016
Inventor 龟泽二郎
Owner TOMOE TECH RES CO LTD
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