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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
  • Application Information

AI Technical Summary

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 structure. In addition, the fine adjustment of the fully closed position requires adjustment of each limit switch, making the adjustment homework becomes troublesome

Method used

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Experimental program
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Embodiment Construction

[0020] Embodiments of the present invention will be described in detail below with reference to the drawings. figure 1 Among them, (1) is the cam unit, and (2) is the limit switch unit. figure 1 It is a perspective view of the whole valve opening detection device (3) applied to the valve device (not shown) having the cam unit (1) and the limit switch unit (2) of the present invention. Such as figure 1 As shown, the valve opening detection device (3) in this embodiment has a box-shaped casing ( 4) and a roughly 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 in a substantially central portion of the housing (4). Adjacent to the cam unit (1), a limit switch unit (2) is arranged close to the cam unit (1), and is linked with a certain action of the cam unit (1) to perform ON / OFF operation.

[0021] The detection shaft (6), which is the main component o...

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PUM

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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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