JP3263790B2 - Valve opening indicating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve opening indicating device in a valve driving device widely used in various plants and the like.

[0002]

2. Description of the Related Art In general, as a valve opening indicating device in a valve driving device as described above, an operation amount of a valve system is reduced by a gear or a chain and displayed by a pointer. .

[0003]

The type of the valve is as follows.
Since there are various sizes, it is necessary for the opening degree indicating device described above to be compatible with the specifications of each valve . For example, in some electric valve driving devices, the valve opening degree reaches 0 to 100% by 100 rotations of the motor, while 1000 rotation of the motor causes
In some cases, the valve opening reaches 100%.

In a conventional valve opening indicating device for displaying the operation amount of a valve stem at a reduced speed by means of a gear or a chain , it is necessary to provide a reduction ratio corresponding to each specification for each different specification of the valve. . If you do so
Without it, the opening of the actual valve, so that the instruction value for the opening indicating device do not match.

[0005] Since the valve opening indicating device employs a multi-stage reduction mechanism, a required reduction ratio is obtained by combining a plurality of types of exchange gears . However, since the specifications of the valves are too diverse, the types of replacement gears to be stocked are enormous. If the required reduction ratio cannot be obtained with gears in stock ,
The required fractional gears must be manufactured separately, in which case there are often problems with delivery times.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, to reduce the number of types of replacement gears, and to eliminate the need to separately manufacture replacement gears.

[0007]

According to the present invention, the above objects can be attained as follows. (1) Circumferential direction over an angle range corresponding to the valve opening
To the outer peripheral surface of the display drum.
The oblique line display attached to the display drum,
With a slit parallel to the display drum
And an opening indicating plate.

(2) In the above item (1), the display drum
On the outer peripheral surface of the display drum, attach an easily removable
By winding with one side edge inclined with respect to the line direction
Open the valve with one sloping side edge of the sheet tape.
It is a diagonal line in the circumferential direction over an angle range corresponding to degrees.

(3) In the above item (1), the display drum
An easy-to-removable linear tape is attached to the outer surface of the display drum shaft.
By winding at an angle to the line direction,
Hold the tape over the angle range corresponding to the valve opening.
Diagonal lines in the circumferential direction.

(4) The method according to any of the above (1) to (3)
Color is different from the outer peripheral surface of the display drum.
belongs to.

(5) Any one of the above items (1) to (4)
The shaded display is an adhesive tape.

(6) Any one of the above items (1) to (4)
The outer peripheral surface of the display drum and the hatched display are
It is made of hook and loop fastener.

(7) The method according to any of the above (1) to (4)
The outer peripheral surface of the display drum is made of a magnetic
The line display is made of a magnetic material.

[0014]

[Action] According to the individual valve specifications, the valve opening degree
Indication of the inclination of the slanted edge in the circumferential direction over the applicable angle range
With a detachable oblique line display on the drum surface
By freely changing, it is possible to cope with various valve specifications.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. The amount of movement of the valve stem depends on the input shaft of the speed reduction mechanism.
(1) It is transmitted to the upper pinion (2). The rotation amount of the pinion (2) is usually less than 270 degrees due to the multi-stage exchange gear group (3).
Is reduced to the rotation angle, it is reached transferred to the output shaft (4).

The rotation of the output shaft (4) is performed via a coupling (5) and a flexible shaft (6) via a display drum (7).
To the rotating shaft (8).

The display drum (7) is pivotally supported rotatably by bearings, rotates by the same rotation amount as the previous SL output shaft (4). The maximum amount of the rotation angle is usually 270 degrees, and assuming that an angle of 0 degrees corresponds to the fully closing of the valve,
An angle of 270 degrees corresponds to full opening.

Conventionally , the pointer is an output shaft of the speed reduction mechanism.
(4) To have a straight set Ritsuke, valve actual opening degree before reaching the fully opened from the fully closed, it is necessary to be precisely rotated 270 degrees pointer. If the reduction ratio of the exchange gear reduction mechanism is not appropriate, a <br/> ing a difference occurs between the actual opening degree of the indicated value.

On the outer peripheral surface of the display drum (7), a sheet tape (10) having one side edge inclined line (9) is wound. This surface tape (10) is inclined on the surface of the display drum (7).
(9) is a diagonal display body for forming an arbitrary angle ;
It shall consist of an adhesive tape that can be peeled off relatively easily,
When the slope line (9) is displayed at the edge of the display drum,
It is desirable to use a different color from the outer peripheral surface of (7).

[0020] In the embodiment, from <br/> the edges of the planar tape (10), the angular range you corresponds to opening of the valve (usually 270 °)
A circumferential inclined line (9) is drawn over the area.

A slit (11) is cut parallel to and parallel to the display drum (7), and a scale (12) indicating the opening of the valve is provided along the upper edge of the slit (11). The opening degree indicating plate (13 ) is provided.

The slit (11) the inclined line is I Table in (9)
And the scale (12) at the intersection with the upper edge of the slit (11) indicates the opening degree of the valve.

It is a feature of the present invention that the inclined line (9) on the circumferential surface on the outer peripheral surface of the display drum (7) is formed of an easily removable material. However, not limited thereto, an adhesive linear tape, a magnetic attraction tape, a surface fastener type tape, and a heat-shrinkable tube or pipe can be used.

[0024]

Advantages of the Invention (a) For a variety of valve specifications that can be said to be infinite, for a wide range of valve specifications, without changing the replacement gear each time, simply adjust the inclination according to the valve specification.
Change or change the angle of the inclined line of the line display body or replace it
You can respond to them just by getting them. Therefore, only a fixed number of standard replacement gears can be used, which is advantageous in inventory management.

(B) Even if the valve opening / closing end position is delayed due to wear or the like, the valve opening / closing end position is set.
Depending on this, change the angle of the inclined edge and paste the surface structure
By obtaining or replaced, that-out <br/> in be associated thereto.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram schematically showing an embodiment of the present invention. (1) Input shaft (2) Pinion (3) Replacement gear (4) Output shaft (5) Coupling (6) Flexible shaft (7) Display drum (8) Rotary shaft (9) Inclined line (10) Planar tape ( (11) Slit (12) Scale (13) Opening indicator

Claims (7)

(57) [Claims] (1) Over an angle range corresponding to the opening degree of a valve.
To form a diagonal line in the circumferential direction.
A hatched display body detachably attached to an outer peripheral surface , and a display drum which is arranged close to the display drum and
An opening indicating plate having a parallel slit . 2. An easily attachable / detachable surface on the outer peripheral surface of the display drum.
Tape is inclined at one side edge with respect to the axis direction of the display drum
2. The valve opening indicating device according to claim 1, wherein the inclined side edge of the sheet tape is formed as a diagonal line in a circumferential direction over an angular range corresponding to the opening of the valve. 3. An easily removable linear tape is wound around the outer peripheral surface of the display drum while being inclined with respect to the axial direction of the display drum. It should be a diagonal line in the circumferential direction over the corresponding angle range.
The valve opening indicating device according to claim 1, wherein 4. The hatched display body, valve opening indicating device according to claim 1 of a different color from the outer peripheral surface of the display drum. 5. The oblique display body is an adhesive tape.
The valve opening indicating device according to any one of claims 1 to 4 . 6. The valve opening display device according to claim 1 , wherein the outer peripheral surface of the display drum and the oblique line display body are formed of an interengaging type surface fastener. 7. The display drum according to claim 1, wherein the outer peripheral surface is made of a magnetic material, and the oblique line display is made of a magnetic material .
5. The valve opening indicating device according to any one of 4 .