JP2000104852A - Opening display device for valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clearly display opening of a valve and to easily adjust the opening. SOLUTION: In a fitting part 73 of a first housing 7a, a cylindrical handle 63 is externally fitted. On a peripheral wall of the handle 63, observation holes 74 are provided at prescribed intervals in a peripheral direction. In a cylinder hole of the handle 63, a display tool 72 constituted of a transparent cylinder is fixed. On this display tool 72, a plurality of opening figures 76 of a prescribed color (black in this case) are described. Further, on an outer peripheral surface of the fitting part 73 of the first housing 7a, a first color area (white in this case) F allowing either one of the plurality of opening displays 76 to be visualized from the outside of the handle 63 and a second color area (black in this case) S preventing remaining opening figures 76 from being visualized are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for displaying the opening of a valve.

[0002]

2. Description of the Related Art Conventionally, this type of opening display device has a plurality of opening scales provided in a circumferential direction on a peripheral surface of a circular handle of a valve.

[0003]

In the above-mentioned prior art, when adjusting the opening of the valve, almost half of a large number of opening scales are visually recognized, so that it is difficult to find a target opening scale. In addition, there is a problem that it takes time to adjust the opening. SUMMARY OF THE INVENTION It is an object of the present invention to clearly indicate the opening degree of a valve and to allow easy adjustment.

[0004]

In order to achieve the above object, the invention of claim 1 is, for example, shown in FIGS.
As shown in FIGS. 8A to 8D, the valve opening indicating device was configured as follows. That is, the rotating body 58 supported by the housing 7 is rotated stepwise to a predetermined turning position by the handle 63 to change the opening degree of the valve and to display the opening degree of the valve. The handle 63 is formed in a cylindrical shape and is externally fitted to the fitting portion 73 of the housing 7. A plurality of transparent display portions 75 are provided on the peripheral wall of the handle 63 in the circumferential direction. Is provided on the outer peripheral surface of the fitting portion 73 of the housing 7 to allow any of the plurality of opening indicators 76 to be visually recognized from outside the handle 63. A first color region F and a second color region S for preventing the remaining opening degree display 76 from being viewed are provided.

In the structure of the first aspect, the case where the handle 63 and the transparent display portion 75 are formed of different members, and the case where the handle 63 is formed of a transparent body and the transparent member is formed of the transparent member. The display portion 7 described above is attached to the handle 63.
5 may be provided. The first color area F and the second color area S may be provided in at least one set, and may be provided in two or more sets.

[0006] The invention of claim 1 is, for example, shown in FIG.
As shown in FIG. 8C and FIG. 8D, the following operation is performed.
FIG. 8C shows the handle 63 and the fitting portion 7.
8 shows a state in the middle of assembling, and FIG. 8D shows a state in which the assembling is completed. Also, here, the display portion 7
5, a black opening number (opening display) 76 is entered, the first color area F is set to white, and the second color area S is set to black. As shown in FIG. 8D, when the handle 63 is rotated, only the opening number 76 (here, “2.0”) corresponding to the first color area F is changed to the handle 63.
Is visible from outside, but the other opening degree numbers are hidden by the second color area S and cannot be visually recognized.

Therefore, according to the first aspect of the present invention, as the steering wheel is operated at a desired rotation angle, only the indication of the opening degree corresponding to the rotation angle can be visually recognized.
The valve opening is clearly displayed and can be easily adjusted.

In the present invention, as described in claim 2, a peep hole 74 is provided on the peripheral wall of the handle 63 at a predetermined interval in the circumferential direction, and a transparent cover is provided so as to cover the peep hole 74. The display device 72 is attached.
When the display portion 75 is constituted by the above, only the target opening degree display can be visually recognized through the above-mentioned viewing hole, so that the valve opening degree can be displayed more clearly.

According to a third aspect of the present invention, in the second aspect of the present invention, the display member 72 is constituted by a transparent cylinder, and the cylindrical display member 72 is attached to the handle 63. When it is attached to the cylindrical hole, the opening degree display device has a simple structure and can be manufactured at low cost.

Further, as shown in the fourth aspect of the present invention, the color of the opening degree display 76 of the display portion 75 and the color of the second color region S of the fitting portion 73 are substantially the same. In this configuration, the opening indication other than the target opening indication can be securely hidden, so that the opening of the valve can be displayed more clearly.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
8 will be described with reference to FIG. In this embodiment, a valve device used for a portable gas cylinder for oxygen inhalation is illustrated. First, the outline of the valve device will be described with reference to the elevation view of FIG. 1 and the flowchart of FIG.

The valve device 1 includes a container valve 2 and a flow regulator 3. Leg screws 5 projecting downward from the housing 4 of the container valve 2 are screwed to the gas cylinder A in an airtight manner. As shown in FIGS. 3 (a) and 3 (b), which will be described later, the outlet nozzle 6 of the housing 4 is provided with an inlet nozzle 8 and a gas filling fitting 9 provided in the housing 7 of the flow controller 3. It can be selectively connected. The above-mentioned container valve 2 is provided with a shut-off valve 12 provided in the middle of the gas outlet path 11.
A safety valve 13 branched from the gas outlet path 11,
Remaining amount indicator 1 for displaying the remaining amount of gas in the gas cylinder A
4 is provided. Further, the flow regulator 3 includes a pressure reducing valve 17 and a variable throttle valve 18 which are arranged in order from the inlet side to the outlet side at an intermediate portion of the gas extraction path 16.

The specific structure of the valve device 1 will be described with reference to FIGS. 1 and 2 and FIGS. 3A and 3B and FIGS. 4 to 6. FIG. FIG. 3 (a)
FIG. 3 shows a state in which a flow regulator 3 is connected to the container valve 2, and is a sectional view taken along line III-III in FIG. 1. FIG.
FIG. 3B shows a state in which the gas filling fitting 9 is connected to the container valve 2 and is a view corresponding to FIG. 3A. FIG. 4 is a cross-sectional view of the container valve 2 as viewed from an elevation, and is a cross-sectional view taken along line IV-IV in FIG. 3A. FIG.
FIG. 5 is a sectional view taken along line VV in FIG. 1. FIG.
FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 1.

The gas outlet path 11 of the container valve 2 is
One end thereof is opened on the lower surface of the leg screw 5. The closing valve 12 provided in the middle of the gas outlet path 11 is
A closing member 22 threadably engaged with the peripheral wall of the closing valve chamber 21
Is provided. When the spindle 24 is rotated by the cylindrical handle 23, the closing member 22 is closed.
5 is opened and closed. In addition, the safety valve 13
Includes a rupturable plate 27 and a fusible plug 28 for backup.

The remaining amount indicator 14 is provided with the leg screw 5.
Upper cylinder 31 screwed to the lower portion of
And a lower cylinder 32 screwed to a lower portion of the lower cylinder 1. A detection rod 33 is inserted into the upper cylinder 31 in an airtight manner, and a tension spring 34 is mounted between a lower part of the detection rod 33 and a lower part of the lower cylinder 32. The above detection rod 33
The height position changes according to the pressure in the gas cylinder A due to the balance between the upward gas pressure acting on the rod cross section and the downward force of the tension spring 34 described above. The remaining amount of gas in the gas cylinder A can be detected by visually observing a change in the height position of the remaining amount indicator 35 provided above the detection rod 33 from the viewing window 36. A scale (not shown) is provided on the peripheral wall of the transparent cylinder 37 made of synthetic resin.

As shown mainly in FIG. 3A, an outlet hole 39 is formed in the outlet nozzle 6 of the container valve 2 and a male screw 40 for connection is formed on a peripheral wall of the outlet hole 39.
Is provided. Further, the housing 7 of the flow regulator 3 includes a first housing 7a provided with the inlet nozzle 8 and a second housing 7b provided with a gas outlet fitting 42. The second housing 7b is fixed to the first housing 7a by screwing the nut 44 to the male screw bar 43 of the first housing 7a.

The above-mentioned inlet nozzle 8 is provided with the above-mentioned outlet hole 39.
The cylindrical nut-shaped operating tool 45 is rotatably fitted to the inlet nozzle 8. The male screw 40 is provided in the cylindrical hole of the operation tool 45.
Is provided with a female screw 46 to be screwed into the. The distal end of the inlet nozzle 8 can be pressed against the bottom surface 39a of the outlet hole 39 in a hermetic manner by the screwing thrust between the male screw 40 and the female screw 46.

The pressure reducing valve 17 is provided in the first housing 7a at an intermediate portion of the gas extracting path 16.
The pressure reducing valve 17 is provided with a valve opening spring 5 acting on a piston 51.
2 (here, the leftward force in FIG. 3A) and the valve closing force acting on the piston 51 from the secondary working chamber 53 (here, the rightward force in FIG. 3A). The pressure-reducing member 54 is adjusted and moved to the pressure-reducing valve seat 55 by the balance of the forces.

The variable throttle valve 18 has an annular plate (rotating body) 58 rotatably mounted between the first housing 7a and the second housing 7b. As shown in FIG. 6, on the annular plate 58, throttle paths 59 having different opening areas are arranged at predetermined intervals in the circumferential direction. A pair of O-rings 60 and 61 that are in sealing contact with both surfaces of the annular plate 58 are mounted on the gas extraction path 16. Then, by rotating the annular plate 58 to a predetermined turning position, any one of the plurality of throttle paths 59 can be communicated with the gas extraction path 16.

More specifically, the first housing 7a and the second housing 7 are provided on the outer peripheral side of the annular plate 58.
The adjustment handle 63 is fitted around b so as to be rotatable around the axis. A locking ball 66 urged by a pressing spring 65 is supported at the left end of the adjustment handle 63, and a plurality of locking holes 67 are formed in the second housing 7 b in a circumferential direction corresponding to the plurality of throttle paths 59. Is provided. Further, the locking wall 68 on the inner periphery of the adjusting handle 63 is engaged with the locking groove 69 (see FIG. 7) of the annular plate 58. When the adjustment handle 63 is rotated, the annular plate 58 is rotated stepwise to a predetermined turning position by the engagement between the ball 66 and the lock hole 67. Thereby, the plurality of throttle paths 59 are communicated with the gas extraction path 16 in a stepwise manner, and the opening degree of the variable throttle valve 18 can be adjusted.

As shown in FIG. 3A and FIGS. 8A to 8D, the device for displaying the opening degree of the variable throttle valve 18 is configured as follows. I have. FIG. 8A is a developed view of a display 72 of the opening degree display device 71. FIG.
(b) is a figure which shows the state before the said display apparatus 71 is assembled. FIG. 8C is a diagram showing a state in which the display device 71 is being assembled in the same manner. FIG. 8D shows the display device 7 of the above.
FIG. 2 is a diagram showing an assembly completed state of No. 1;

The cylindrical adjusting handle 63 is fitted outside the fitting portion 73 on the outer peripheral surface of the first housing 7a with a predetermined gap. Further, a viewing hole 74 is provided on the peripheral wall of the handle 63 at a predetermined interval in the circumferential direction. As shown in FIGS. 8 (a) and 8 (b), the display 72 is formed by joining both ends of a transparent long thin plate to form a cylindrical body. The handle 63 is fixed to the cylindrical hole of the handle 63 with an adhesive or the like. This allows
A plurality of display portions 75 are formed on the transparent display 72 in the circumferential direction corresponding to the peep holes 74.

On each of the display portions 75, an opening number (opening display) 76 is drawn in a predetermined color (here, black).
Further, the fitting portion 73 of the first housing 7a
As shown in FIGS. 8 (c) and 8 (d), on the outer peripheral surface of the handle 63, any one of the plurality of opening numbers 76 is allowed to be visually recognized from the outside of the handle 63. One color area F and a second color area S for preventing the remaining opening number 76 from being viewed are provided. More specifically, here, the color of the first color region F is the ground color (gray white) of aluminum as the material of the fitting portion 73, and the color of the second color region S is The fitting portion 73 is painted black.

The opening degree display device 71 operates as follows. When the above-described adjustment handle 63 is rotated, FIG.
As shown in (d), only the opening degree number 76 (here, “2.0”) corresponding to the first color area F is visually recognized from the peephole 74, whereas the other opening degree numbers are: The second
Since these areas are hidden by the color of the color area S (here, black), these opening numbers cannot be visually recognized. 8 (d) is viewed from the left side, the handle 6
If you turn 3 in the clockwise closing direction, see “2.
Only the opening number "1.5" next to "0" can be seen, and when the handle 63 is turned counterclockwise, only the opening number "2.5" next to "2.0" can be seen. . Hereinafter, according to the opening / closing rotation angle of the handle 63,
The corresponding opening number 76 can be seen through the viewing hole 74.

The above-configured valve device 1 is used as follows. When taking out the gas from the gas cylinder A, first, as shown in FIG. 3A, the flow regulator 3 is attached to the container valve 2 of the gas cylinder A. Next, the control handle 63 of the flow regulator 3 is rotated to the position of the predetermined opening number 76, and the handle 2 of the container valve 2 is turned.
Open 3 fully. Then, the gas in the gas cylinder A passes through the shut-off valve 12 of the container valve 2 and the flow controller 3
Out of the pressure reducing valve 17, and the pressure is reduced to a preset pressure by the pressure reducing valve 17, and subsequently, the flow rate is adjusted while passing through the throttle path 59 of the variable throttle valve 18. It is taken out.

When the gas in the gas cylinder A is emptied due to the removal of the gas, the flow controller 3 is removed from the outlet nozzle 6 of the container valve 2 and the removed flow controller is removed. The vessel 3 may be attached to a container valve of another gas cylinder. When filling the empty gas cylinder A with a new gas, as shown in FIG.
The gas filling fitting 9 may be connected to the outlet nozzle 6 of the container valve 2. The gas filling fitting 9 is a gasket 8
1 and a cap nut 83 for pressing the metal fitting body 82 against the outlet nozzle 6.

The above embodiment can be modified as follows. The connection structure between the container valve 2 and the flow controller 3 is different from that in which the male screw 40 is provided on the outlet nozzle 6 of the container valve 2 and the female screw 46 is provided on the operation tool 45 of the flow controller 3. A female screw is provided in the outlet hole 39 of the outlet nozzle 6 of the container valve 2 and the operating tool 45 of the flow controller 3 is provided.
May be provided with a male screw. The hermetic connection between the inlet nozzle 8 of the flow rate regulator 3 and the outlet nozzle 6 is made at the tip end surface of the outlet nozzle 6 instead of connecting at the bottom surface 39 a of the outlet hole 39 of the outlet nozzle 6. It is also possible to connect. The operating tool 45 may be provided at the outlet nozzle 6 of the container valve 2 instead of being provided at the inlet nozzle 8 of the flow controller 3. May be provided over both.

Of course, the pressure reducing valve 17 is not limited to the illustrated structure. Further, the variable throttle valve 18 is not limited to the illustrated structure, and may be replaced with, for example, a needle valve. The flow regulator 3 may be combined with another type of valve instead of the combination of the pressure reducing valve 17 and the variable throttle valve 18.

The opening display device 71 of the above-mentioned flow controller 3
Instead of mounting the transparent tubular display device 72 in the cylindrical hole of the adjustment handle 63, a transparent flat display device may be mounted in each of the viewing holes 74. Further, the opening degree display device 71 is replaced with a combination of a plurality of viewing holes 74 provided in the circumferential direction of the adjustment handle 63 and a transparent display 72 provided with an opening number 76. 63 may be made of a transparent synthetic resin, and the above-mentioned opening number 76 may be engraved or drawn on the peripheral wall of the transparent handle 63.

The two colors of the color of the opening degree number 76 and the color of the second color region S of the fitting portion 73 may be different from the exemplified black color. The two colors may be different from each other.
The color of the first color area F of the fitting portion 73 may be any color in which the opening degree number 76 is conspicuous.
In place of the ground color described above, another color may be applied, or a synthetic resin of another color may be fitted to the fitting portion 73. The opening degree display is replaced with the opening degree number 76,
Another type of display such as a pictogram may be used.

The valve device 1 according to the present invention is suitable for being mounted on a portable gas cylinder for oxygen inhalation or the like.
The present invention is not limited to this, and it goes without saying that it may be mounted on another type of gas cylinder for industrial use or the like.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, and is an elevation view of a valve device for a gas cylinder.

FIG. 2 is a flowchart of the valve device.

FIG. 3 (a) is a cross-sectional view taken along line III-III in FIG. 1, showing a state where a flow regulator is connected to the container valve of the valve device. FIG. 3B shows a state in which a gas filling fitting is connected to the container valve, and is a view corresponding to FIG. 3A.

4 is a cross-sectional view of the above-described container valve as viewed from an elevation, and is a cross-sectional view taken along line IV-IV in FIG. 3 (a).

FIG. 5 is a sectional view taken along line VV in FIG.

FIG. 6 is a sectional view taken along line VI-VI in FIG.

FIG. 7 is a front view of an annular plate provided in a variable throttle valve of the flow regulator.

FIG. 8 shows a device for displaying the opening degree of the variable throttle valve. FIG. 8A is a developed view of a display device of the opening degree display device. FIG. 8B is a diagram showing a state before the display device is assembled. FIG. 8C is a diagram showing a state during the assembly of the display device of the above. FIG. 8D is a diagram showing a state where the assembling of the display device is completed.

[Explanation of symbols]

7 housing, 7a first housing, 58 rotating body
(Annular plate), 63: handle (adjustment handle), 72: display, 73: fitting part, 74: peephole, 75: display part, 7
6: Opening degree display (opening number), F: First color area, S: Second
Color area.

Claims (4)

[Claims] 1. A rotating body (58) supported by a housing (7).
The valve is changed in a stepwise manner by a handle (63) to a predetermined turning position to change the opening of the valve, and the opening of the valve can be displayed. Formed on the above housing
A plurality of transparent display portions (75) are circumferentially provided on the peripheral wall of the handle (63), and a predetermined color is provided on each display portion (75). Is provided on the outer peripheral surface of the fitting portion (73) of the housing (7).
One of the plurality of opening indications (76) is the handle
(63) The first color area that is allowed to be viewed from outside
(F) and a second color area (S) for preventing the remaining opening indication (76) from being visually recognized. 2. The valve opening display device according to claim 1, wherein a peephole (74) is provided on the peripheral wall of the handle (63) at predetermined intervals in a circumferential direction. A transparent indicator (72) is attached so as to cover (74), and the indicator
(72) The valve opening degree display device, wherein the display portion (75) is constituted by (72). 3. The valve opening display device according to claim 2, wherein said display device (72) is constituted by a transparent cylinder.
The valve opening display device according to claim 1, wherein said cylindrical display (72) is attached to a cylindrical hole of said handle (63). 4. The valve opening display device according to claim 1, wherein a color of said opening display (76) of said display portion (75) and said fitting portion (73) are provided. ) Wherein the color of the second color region (S) is substantially the same as the color of the second color region (S).