JP2001012648A - Open/close indication device of actuator of valve mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To indicate the open/close by a single part, not depending on the installation direction by forming the full open and full close position single along the periphery of an opening plate alternately at the equal interval and indicating a set of full open and full close position signal while cutting one part of an indicator and forming the installation position changably. SOLUTION: Plural opening position indicators 9 are formed along the periphery of an opening plate 7. Four installation holes 10 are drilled on the opening plate 7 so as to select the installation position with four kinds of different opening plates 7. An indicator consisting of a disk member forms a cut off part 11 which can indicate a set of opening position indicator 9 of the opening plate 7 on its one part. Two sets of screw holes 22 are formed on the spacer 14 for installing the indicator so as to select two kinds of different installation position. Thereby, 8 kinds of combination can be made by the combination of the opening plate 7 with the installation position of the indicator and can be coped with regardless of the installation direction of a gear box.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing display of an actuator of a valve mechanism that allows the opening / closing position of a valve element for opening / closing a valve to be easily and clearly visible in conjunction with a pointer of an indicator regardless of the mounting direction of the actuator. Related to the device.

[0002]

2. Description of the Related Art Conventionally, valve mechanisms such as a butterfly valve and a ball valve which open and close a valve by rotating a valve body by 90 degrees are known. In such a valve mechanism, a valve stem pivotally supporting a valve element extends out of the valve body, and a gear box with a manual handle is provided at an outer end of the valve stem extending out of the valve body, an air cylinder, and an electric actuator. And the like, and a desired actuator is connected to rotate the valve body to perform an opening / closing operation.
The opening / closing position of the valve body by the actuator can be fixed to the valve body by displaying the fully closed position and the fully open position on the valve body, or the letters representing the fully closed position and the fully open position can be cast on the outer surface of the valve body and connected to the actuator. The opened / closed position of the valve body is displayed by the indicator. Therefore, it has been difficult to change the position display when the mounting direction of the actuator is turned by 90 degrees or when the take-out direction of the handle shaft is reversed. Normally, the rotation direction of the operation handle of the valve is specified by Japanese Industrial Standards to open the valve in a counterclockwise direction and close the valve in a clockwise direction. Even if the direction is reversed,
It is required to change the open / close display so that the operation direction for opening / closing the valve is not reversed. However, such a demand cannot be easily satisfied with the conventional open / close display means.

[0003]

SUMMARY OF THE INVENTION According to the present invention, it is possible to cope with any mounting direction of the actuator by a combination of a single opening plate and a single indicator, regardless of the mounting direction of the actuator. It is another object of the present invention to be able to perform opening and closing display with a single common component.

[0004]

In order to solve the above-mentioned problems, the present invention adopts a method in which an opening plate is provided on an outer surface of an actuator that drives a valve mechanism that opens and closes a valve with a rotating valve body. An indicator provided with a pointer indicating the opening symbol displayed on the opening plate is connected to the valve stem of the valve body, and the opening plate has at least a fully open position symbol and a fully closed position symbol alternately along the circumference. The indicator is formed at equal intervals of 90 degrees and the mounting position is freely changeable. The indicator has a disk shape covering the opening plate, and a part of the indicator is cut off to fully open and close a set of the opening plate. The position symbol can be displayed and the mounting position can be changed.

The opening plate is a ring-shaped disk having an opening at the center, and four mounting holes are formed in orthogonal diameter directions, and the indicator covers the upper surface of the opening plate. A part of the opening plate is cut away so that a set of full open and full close position symbols can be displayed.

The opening plate is made of a thick disk-shaped member, an opening indication symbol is provided on the upper surface, and a region including the fully open position and a region including the fully closed position are provided on the peripheral side surface so as to be visually recognizable. Consists of a dish-shaped member that can cover the peripheral side of the opening plate, and a part of it can be cut out to display the opening position display section on the top surface of the opening plate and the fully open and fully closed position areas on the peripheral side. It is characterized by having.

The present invention is characterized in that a peripheral side surface at a position diametrically opposed to a cutout portion of the indicator is cut out so that a full open / closed position region of the peripheral side surface of the opening plate can be exposed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below. The drawings show an embodiment in which the present invention is applied to a gearbox provided with a manual handle, which is a type of a driving actuator, for a valve stem for driving a valve body of a butterfly valve. Not limited to air cylinders,
The present invention can be similarly applied to other actuators such as electric operation machines. Further, the valve mechanism is not limited to the butterfly valve, but can be similarly applied to various valve mechanisms such as a ball valve having an opening and closing angle of 90 degrees from the fully open position to the fully closed position of the valve element. is there.

Referring to the drawings, a gear box (1) is composed of a lower casing (1a) and an upper casing (1b), and a worm wheel (2) and a worm gear (3) are meshed and incorporated therein. . Worm wheel (2) with joint (4)
The tip of the valve stem that rotates the valve body of the valve mechanism via the shaft is connected integrally with the rotation. A handle shaft (5) having a manual handle (6) at the outer end is connected to the worm gear (3). By rotating the manual handle (5), the valve stem is rotated to open and close the valve body. I can do it. An opening plate (7) is provided on the upper surface of the gear box (1) to indicate the open / close position of the valve body.
And an opening display means comprising an indicator (8).

According to the present invention, in the valve stem driving device, an opening plate (7) is mounted on the upper surface of the gear box (1) so that a mounting position can be selected, and the upper surface of the opening plate (7) is mounted on the upper surface of the opening plate (7). An open / close position indicator (9) provided on the opening plate (7) is connected to the worm wheel (2) in a selectable mounting position while being covered with an indicator (8) made of a disk-like plate. The indicator (8) is displayed, and by selecting two types of mounting positions, that is, selecting the mounting position of the opening / closing plate and selecting the mounting position of the indicator (8), the valve body can be set in accordance with any mounting position of the actuator. The open / close position can be displayed.

The opening plate (7) is a ring-shaped disk having a circular hole formed at the center thereof for connecting the indicator to the worm wheel, and a plurality of opening position display portions (9) along the circumference.
Are formed. The opening position display section (9) is composed of, for example, an "O" symbol (9a) indicating a fully open position, an "S" symbol (9b) indicating a fully closed position, and a line symbol (9c) indicating an intermediate position. , Symbols that indicate the fully open position and the fully closed position (9a) (9b)
Are formed at four locations at equal intervals of 90 degrees, and one set of fully closed and fully opened symbols is displayed by the indicator (8). The intermediate position symbol (9c) is composed of three line symbols that divide the set between the fully open position symbol (9a) and the fully closed position symbol (9b) at equal intervals. However, such position symbols are merely exemplary and not limiting. Any display means may be used. The opening plate (7) is provided with four mounting holes (10) in the diameter direction passing through the intermediate position, so that four different mounting positions of the opening plate (7) can be selected. The opening plate (7) is provided with two mounting screws (17) on the upper surface of the upper casing (1a) while aligning the center opening (15) with the opening (16) formed in the upper casing (1a). ) For detachable mounting.

The indicator (8) is made of a disc-shaped member capable of covering the upper surface of the opening plate (7), and is partially provided with a 90-degree interval between the opening plate (7). Full opening of the set
A cut-out portion (11) capable of displaying the fully closed and intermediate position symbols (9a) (9b) (9c) is formed, and a pointer (12) is provided at the center of the cut-out portion (11) with an opening position display portion (9). ) Is projected. A display projection plate (18), which is linearly continuous with the pointer (12), protrudes along the center of the indicator (8). indicator
(8) is connected to a spacer (14) which is integrally rotated with the worm wheel (2) by a mounting screw (13). For this purpose, openings (15) and (16) are formed in the center of the opening plate (7) and the upper casing (1b), and the indicator (8) can be freely rotated above the opening plate (7). Accept. Two sets of screw holes (22) are formed in the spacer (14) in the diametric direction so that two different mounting positions of the indicator (8) can be selected. Thus, selection of four types of mounting positions of the opening plate (7),
By combining the two types of indicators (8) with the selection of the mounting position, eight types of combinations can be created.

FIGS. 8 to 12 show a combination of the opening display device and the actuator according to the present invention.
Numerals 12 to 12 indicate a state in which the valve element is at the intermediate opening position, and the sharpened tip of the pointer (12) indicates the flow direction of the fluid. In the figure, (19) shows a pipe, and a valve body (20) of a butterfly valve is sandwiched and attached between a pipe flange (19a) in a wafer shape. (21) is a disc-shaped valve element for opening and closing the butterfly valve. FIG. 9 shows FIG.
Shows the case where the actuator is mounted in the standard mounting state shown in Fig. 1 and the handle shaft extends rightward perpendicular to the flow direction of the fluid in the pipe (19), and the manual handle (6) is turned counterclockwise. When rotating in the direction, the valve body (21) is rotated in the fully open direction, and the pointer (12) is fully opened symbol (9a) on the opening plate (7).
Indicates the fully opened state of the valve body, and the pointer (12) indicates the flow direction of the fluid. FIG.
0 indicates that the direction of taking out the handle shaft (5) is 18
In this case, the indicator (8) is turned to the left, and the indicator (8) is removed and rotated 90 degrees to be attached. In this case, the rotation direction of the valve body can be indicated by the hands (12). FIG. 11 shows a state in which the flow direction of the fluid is opposite to that in FIG. 8, and the gearbox (1) is rotated 90 degrees from the position in FIG. 9 so that the handle shaft (5) is positioned parallel to the pipe direction. This shows the arrangement state. In this case, the indicator (8) is attached by rotating it by 180 degrees with respect to FIG. Thus, the pointer (12) of the indicator (8) can display the flow direction of the fluid and the open / close position of the valve element. FIG.
This shows a case where the flow direction of the fluid is opposite to that of FIG. 10 and the handle shaft (5) is parallel to the pipe direction as in FIG. In this case, the indicator (8) may be rotated by 180 degrees with respect to FIG. As a result, the pointer (12) of the indicator (8) indicates the flow direction of the fluid and the opening / closing direction of the valve element (21).

FIG. 13 shows a state in which the flow direction of the fluid is opposite to that in the case of FIG. 9, which can be dealt with by mounting the indicator (8) by rotating it by 180 degrees with respect to FIG. FIG. 14 shows a state in which the flow of the fluid is reversed from that in FIG. 10, and this can be dealt with by mounting the indicator (8) by rotating it 180 degrees with respect to FIG. FIG. 15 shows a state in which the flow direction of the fluid is opposite to that of FIG. 11, which can be dealt with by turning the indicator (8) 180 degrees with respect to FIG. FIG. 16 shows a state in which the flow of the fluid is reversed from that of FIG.
It is possible to cope with it by rotating it by 0 degrees. Thus, it is possible to cope with eight types of mounting position changes regardless of the direction of flow of the fluid, the direction in which the gearbox is mounted, and the direction in which the handle shaft is removed. FIG.
20 to 20 are diagrams showing the positional relationship between the valve body and the opening plate, FIG. 17 shows the case of FIG. 9, FIG. 18 shows the case of FIG.
14 shows the case of FIG. 14 and FIG. 20 shows the case of FIG. 12, and the position of the opening plate can be changed in one relationship.

FIGS. 21 to 26 show a modification of the present invention. In this deformation, the opening plate (70) is formed of a disk-shaped member having a slightly thicker thickness, the peripheral side surface is formed in a frustum shape whose diameter decreases upward, and the opening position indicator (71 ), And the area (72) from the fully open position to the intermediate position and the fully closed position to the intermediate position on the peripheral side surface is painted in different colors, so that the position of the valve body can be visually recognized from afar in color. At the same time, the indicator (80) is formed in a dish shape covering the upper surface and the peripheral side surface of the opening plate (70), and a portion is continuously cut from the upper surface to the peripheral side surface to form a cutout portion (81). Exposing the upper surface of the opening plate and part of the peripheral side surface from the cutout (81), the opening symbol (71)
In addition, a paint color area (72) can be displayed. The indicator (80) forms a back cutout (82) by cutting the circumferential surface of the back that is diametrically opposed to the cutout (81) to correspond to the width of the painted area (72). It is preferable that the paint color region (72) is exposed also from (82). Thus, the open / closed state of the valve body can be visually recognized not only from the front but also from the back. The paint color area (72) indicating the open / close position formed on the peripheral side surface of the opening plate (70) is not only made visible by the paint color, but also affixing a reflection plate, attaching cloth, paper, etc. In addition, various other methods can be adopted, and any means and method may be used as long as they can be visually recognized from a distance.

[0016]

According to the present invention, when a rotary valve is mounted on a pipe line and an actuator for driving a valve body is mounted on a valve body, one opening degree is set regardless of the mounting direction of the actuator with respect to the valve. The opening position of the valve body can be displayed on the display device.

[Brief description of the drawings]

FIG. 1 is a side view of an actuator including an opening display device according to the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is an exploded perspective view.

FIG. 5 is a plan view of an opening plate.

FIG. 6 is a plan view of an indicator.

FIG. 7 is a plan view showing a combination of an opening plate and an indicator.

FIG. 8 is a plan view showing a state of being attached to a pipeline.

FIG. 9 is a plan view showing one mode of use of the valve body and the opening indicating plate.

FIG. 10 is a plan view showing another usage pattern of the valve body and the opening indicating plate.

FIG. 11 is a plan view showing another use mode of the valve body and the opening display plate.

FIG. 12 is a plan view showing another use mode of the valve body and the opening indicating plate.

FIG. 13 is a plan view showing another use mode of the valve body and the opening display plate.

FIG. 14 is a plan view showing another usage pattern of the valve body and the opening display plate.

FIG. 15 is a plan view showing another usage pattern of the valve body and the opening display plate.

FIG. 16 is a plan view showing another use mode of the valve body and the opening indicating plate.

17 is a diagram showing a positional relationship between a valve body and an opening plate in the embodiment of FIG. 9;

FIG. 18 is a diagram showing a positional relationship between a valve body and an opening plate in the use mode of FIG. 11;

FIG. 19 is a diagram showing a positional relationship between a valve body and an opening plate in the use mode of FIG. 14;

20 is a diagram showing a positional relationship between a valve body and an opening plate in the use mode of FIG.

FIG. 21 is a side view showing a state in which an opening degree display device according to a modification of the present invention is attached to an actuator.

FIG. 22 is an exploded perspective view of the opening degree display device.

FIG. 23 is a plan view of the same.

FIG. 24 is a side view of the same.

FIG. 25 is a front view of the same.

FIG. 26 is a rear view of the same.

[Explanation of symbols]

 (1) Gear box (1a) Lower casing (1b) Upper casing (2) Worm wheel (3) Worm gear (4) Joint (5) Handle shaft (6) Manual handle (7) Opening plate (8) Indicator (9 ) Opening position indicator (9a) Fully open position symbol (9b) Fully closed position symbol (9c) Intermediate position symbol (10) Mounting hole (11) Cutout (12) Pointer (13) Mounting screw (14) Spacer (15 ) Opening hole (16) Opening hole (17) Mounting screw (18) Protrusion plate (19) Piping (20) Valve body (21) Valve body (22) Screw hole (70) Opening plate (71) Opening position display (72) Painted area (80) Indicator (81) Cutout (82) Back cutout

[Procedure amendment]

[Submission date] June 30, 1999 (1999.6.3)
0)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction contents]

The indicator (8) is made of a disc-shaped member capable of covering the upper surface of the opening plate (7), and is partially provided with a 90-degree interval between the opening plate (7). Full opening of the set
A cut-out portion (11) capable of displaying the fully closed and intermediate position symbols (9a) (9b) (9c) is formed, and a pointer (12) is provided at the center of the cut-out portion (11) with an opening position display portion (9). ). Guideline
A display projection plate (18), which is linearly continuous with (12), protrudes along the center of the indicator (8). indicator
(8) is connected to a spacer (14) which is integrally rotated with the worm wheel (2) by a mounting screw (13). For this purpose, openings (15) and (16) are formed in the center of the opening plate (7) and the upper casing (1b), and the indicator (8) can be freely rotated above the opening plate (7). Accept. The spacer (14) is diametrically
Two sets of screw holes (22) are formed facing the indicator (8).
The two different mounting positions can be selected.
Thus, it is possible to create eight combinations by selecting the four mounting positions of the opening plate (7) and selecting the mounting positions of the two indicators (8).

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

FIG. 13 shows a state in which the flow direction of the fluid is opposite to that in the case of FIG. 9, which can be dealt with by mounting the indicator (8) by rotating it by 180 degrees with respect to FIG. FIG. 14 shows a state in which the flow of the fluid is reversed from that in FIG. 10, and this can be dealt with by mounting the indicator (8) by rotating it 180 degrees with respect to FIG. FIG. 15 shows a state in which the flow direction of the fluid is opposite to that of FIG. 11, which can be dealt with by turning the indicator (8) 180 degrees with respect to FIG. FIG. 16 shows a state in which the flow of the fluid is reversed from that of FIG.
It is possible to cope with it by rotating it by 0 degrees. Thus, it is possible to cope with eight types of mounting position changes regardless of the direction of flow of the fluid, the direction in which the gearbox is mounted, and the direction in which the handle shaft is removed. FIG.
20 to 20 are diagrams showing the positional relationship between the valve body and the opening plate, FIG. 17 shows the case of FIG. 9, FIG. 18 shows the case of FIG.
14 shows the case of FIG. 14 and FIG. 20 shows the case of FIG. 12, and the position of the opening plate can be changed in each positional relationship.

[Procedure amendment 3]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

[Procedure amendment 4]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

FIG. 3

[Procedure amendment 5]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Change

[Correction contents]

FIG. 4

Claims (4)

[Claims] 1. An indicator having an opening plate disposed on an outer surface of an actuator for driving a valve mechanism for opening and closing a valve with a rotating valve body, and a pointer for indicating an opening symbol displayed on the opening plate. Is connected to the valve stem of the valve body, and at least the full open position symbol and the full close position symbol are alternately formed at regular intervals of 90 degrees along the circumference, and the mounting position is freely changeable. The indicator is formed in a disk shape covering the opening plate, and a part of the indicator is cut off so that a set of fully open and fully closed position symbols can be displayed and the mounting position can be freely changed. Opening / closing display device for a valve mechanism actuator. 2. The opening plate is formed of a ring-shaped disk having an opening at the center, and four mounting holes are formed in orthogonal diameter directions, and the indicator covers the upper surface of the opening plate. 2. The opening / closing display device according to claim 1, wherein the opening / closing display device is formed of a disc-shaped member that is partially cut away so that a set of fully open and fully closed position symbols can be displayed. 3. The opening plate is made of a thick disk-shaped member, is provided with an opening indication symbol on an upper surface, and is provided with a region including a fully open position and a region including a fully closed position on a peripheral side surface, respectively. The indicator is made of a dish-shaped member that can cover the peripheral side of the opening plate, and a part of the indicator is cut off to display the opening position display section on the upper surface of the opening plate and the fully open and fully closed position areas on the peripheral side. The open / close display device according to claim 1, wherein the display device can be put out. 4. A fully open / closed position region of a peripheral side surface of an opening plate by excision of a peripheral side surface at a position diametrically opposed to a cut off portion of an indicator. The open / close display device as described in the above.