JPH0519658Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is used to control the flow rate, pressure, etc. of liquids and gases, and is used to control the pressure, temperature, flow rate, concentration, PH, etc. of the fluid to be controlled. This invention relates to a controller in which a property detector for detecting properties of a valve is incorporated into a valve operating handle.

[Conventional technology]

Generally, when controlling the pressure, flow rate, temperature, etc. of liquids or gases, detectors such as control valves, pressure gauges, flow meters, thermometers, etc. are installed on the control panel, or detectors such as control valves, pressure gauges, flow meters, thermometers, etc. Such control valves and detectors are arranged close to each other. However, when a control valve and a detector are placed separately and in parallel, it inevitably requires a large installation space and complicated installation piping, which leads to miniaturization of the control panel and simplification of piping equipment. difficult to achieve. In addition, when controlling pressure, flow rate, etc., when the number of control valves and detectors installed increases, the arrangement of each valve tends to become complicated, resulting in erroneous operations and reading errors on the detector display. There is a problem with becoming.

Therefore, as recently disclosed in Japanese Patent Application Laid-Open No. 01-150085, a detection display section is exposed on the top surface of a valve operating handle attached to a valve stem.
2. Description of the Related Art A controller, which is a control valve, has been proposed which integrally incorporates a detector for detecting properties such as pressure of a fluid to be controlled.

[The problem that the idea aims to solve]

However, with such a controller, when operating the valve,
As the handle is rotated, the detector is also rotated. In other words, the position of the display part of the detector is
It will change each time you operate the handle.

For this reason, depending on the operating position of the handle, the display section of the detector may be difficult to see, leading to a risk of reading errors on the display section and, ultimately, the risk of erroneously operating the valve.

In view of these circumstances, the present invention allows the display section of the detector to be positioned at the most easily visible position regardless of the operating position of the valve operating handle, thereby preventing reading errors on the display section and erroneous valve operation. The purpose of this invention is to propose a controller that can accurately operate valves without causing any problems.

[Means to solve the problem]

In particular, the controller according to claim 1 of the present invention that solves this problem has the property detector of the controlled fluid supported by the valve operating handle so as to be relatively rotatable around the valve stem axis, and the upper end of the valve stem. A display position adjustment mechanism is provided between the detector and the handle, the display position adjustment mechanism is rotatably connected to the handle, and the display position adjustment mechanism is configured to operate the detector to an arbitrary rotational position with respect to the handle.
An operating gear is fixedly installed on the detector side and whose axis line coincides with the valve stem axis line, and the operating gear is rotatably supported on the handle side.
The operating gear meshes with the operating gear and has a part of its circumferential surface exposed on the circumferential surface of the handle.

Further, in the controller according to claim 2 of the present invention, the property detector of the controlled fluid is supported by the valve operating handle so as to be relatively rotatable around the valve stem axis, and is rotatably connected to the upper end of the valve stem. and a display position adjustment mechanism is interposed between the detector and the handle to operate the detector to an arbitrary rotational position with respect to the handle,
The display position adjustment mechanism includes an operating body that has an operating section protruding above the upper surface of the handle, is attached to the detector, and is rotatable relative to the handle.

[Operation] If the display part of the detector is located in an awkward position, the display position adjustment mechanism rotates the detector appropriately around the valve stem axis. Thereby, the position of the display section can be adjusted to the most easily viewable position.

〔Example〕

Hereinafter, the structure of the present invention will be specifically explained based on the embodiments shown in FIGS. 1 to 3. This embodiment relates to an example in which the present invention is applied to a needle type control valve with a pressure detector.

In the control valve as a controller shown in FIG. 1, 1 is a valve box, 2 is a valve operation handle, 3 is a pressure detector that is a property detector of the controlled fluid built into the handle 2, and 4 is a screw threaded into the valve box 1. The valve stem 5 supported together is a display position adjustment mechanism interposed between the handle 2 and the detector 3.

As shown in FIG. 1, the handle 2 is attached to the valve stem 4 by a handle support 6 fixed to its lower surface.

As shown in FIGS. 1 and 2, the pressure detector 3 is equipped with a detection display section 3a on the upper surface and an introduction section 3b for the controlled fluid on the lower surface. It is freely embedded and supported.
A display section 3a is exposed on the upper surface of the handle 2. The introduction part 3b is rotatably connected to the upper end of the valve stem 4 via an O-ring 7, and is formed to penetrate through the valve stem 4 while allowing relative rotation of the detector 3 with respect to the valve stem 4. The fluid to be controlled inside the valve box 1 is introduced through the introduction passage 4a. In addition, as the pressure detector 3, a Bourdon tube pressure gauge,
A known pressure gauge such as a diaphragm pressure gauge is used.

As shown in FIGS. 1 and 3, the display position adjustment mechanism 5 includes an operating gear 8 that is fixed to the outer peripheral surface of the introduction part 3b of the detector 3 and whose axis coincides with the valve stem axis, and a lower surface of the handle 2. and an operation gear 9 which is rotatably supported on the outer peripheral edge of the handle support 6 and meshes with the operation gear 8. In addition, the operating gear 9
As shown in FIG. 3, a part 9a of its circumferential surface is slightly exposed on the circumferential surface of the handle 2, and by operating this exposed portion 9a with a finger, the operating gear 9 can be operated.
It is devised so that it can be rotated artificially.

Therefore, by manually rotating the operating gear 9, the operating gear 8 meshing with the operating gear 9 can be rotated.
As the detector 3 rotates, the detector 3 also rotates in the same direction, and the detector 3 can be brought to any rotational position relative to the handle 2, and the display part 3a
The position can be changed and adjusted to the most easily visible position.

Note that the configuration of the display position adjustment mechanism 5 is not limited to the above embodiment, and may be configured as shown in FIG. 4, for example. That is, the operating body 10 having the operating part 10a protruding from the upper surface of the handle is attached to the detector 3 rotatably connected to the upper end of the valve stem 4, and the operating body 10 is attached to the handle 2. It is made relatively rotatable. Therefore, by pinching the operating part 10a and moving it in the circumferential direction, the detector 3 rotates with respect to the valve stem 4 and handle 2, and the position of the display part 3a is changed to the most easily visible position. Can be adjusted.

Further, the control valve to which the present invention is applied is not limited to a needle type, and the handle 2
Regarding the detectors etc. incorporated in
It is possible to configure the same as that taught and suggested in No. 150085.

[Effect of idea]

The controller of the present invention is configured so that the detector can be rotated around the valve stem axis with respect to the handle by the display position adjustment mechanism, so the detection display section can be adjusted by operating the display position adjustment mechanism. It can always be positioned at the most visible position, the display can be read easily and accurately, and the fluid to be controlled can be well controlled by valve operation.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the controller according to the present invention, with Figure 1 being a vertical sectional side view of the controller, Figure 2 being a plan view of the valve operating handle, and Figure 3 being a top view of the valve operating handle. It is a cross-sectional bottom view along the - line of FIG.
The figure is a longitudinal sectional side view of a main part showing a modification of the display position adjustment mechanism. 2... Valve operation handle, 3... Pressure detector (property detector of controlled fluid), 3a... Detection display section,
4... Valve stem, 5... Display position adjustment mechanism, 8... Operating gear, 9... Operating gear, 9a... Part of peripheral surface of operating gear (exposed part), 10... Operating body, 10a
...Operation section.

Claims (1)

[Claims for Utility Model Registration] 1. A property detector 3 for controlled fluid is incorporated into a valve operating handle 2 attached to a valve stem 4, with a detection display section 3a exposed on the top surface of the handle 2. In a certain controller, the detector 3 is supported by the valve operating handle 2 so as to be relatively rotatable around the valve stem axis, and is rotatably connected to the upper end of the valve stem 3, so that the detector 3 and the handle 2 are connected to each other. In between, a display position adjustment mechanism 5 for operating the detector 3 to an arbitrary rotational position with respect to the handle 2 is interposed, and the display position adjustment mechanism 5 is fixedly installed on the detector 3 side,
an operating gear 8 whose axis coincides with the valve stem axis; and an operating gear 9b rotatably supported on the handle 2 side, meshing with the operating gear 8 and having a part 9a of its circumferential surface exposed on the circumferential surface of the handle 2. 9. A controller characterized by comprising: 2. In a controller in which the property detector 3 of the controlled fluid is incorporated in the valve operation handle 2 attached to the valve stem 4, with the detection display section 3a exposed on the upper surface of the handle 2, the detector 3 is supported by the valve operating handle 2 so as to be relatively rotatable around the valve stem axis, and is rotatably connected to the upper end of the valve stem 3, and the detector 3 is placed between the detector 3 and the handle 2 on the handle. 2, a display position adjustment mechanism 5 that can be operated to any rotational position is provided, and the display position adjustment mechanism 5 is provided with an operation part 10a that protrudes above the upper surface of the handle 2, and is attached to the detector 3. A controller characterized in that it comprises an operating body 10 that is rotatable relative to the handle 2.