JPH06103079B2 - Valve 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 device attached to a stopper of a pressure vessel for storing compressed gas such as carbon dioxide and capable of flowing and filling compressed gas.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 18, a valve device of this type has a sealing member D having a valve spring C attached to a sealing member passage B of a valve body A which is attached to a plug of a pressure vessel, and a sealing member D. And a plunger F inserted into the nozzle hole E of the valve body A connected to the member D.

[0003]

In the conventional valve device, unless the gap between the plunger F and the nozzle hole E is made small, the sealing member D rattles and the nozzle hole E cannot be sealed reliably.

For this reason, there has been a drawback that the gas filling work for passing through the gap between the nozzle hole E and the plunger F cannot be performed efficiently and takes time. Further, when the pressure on the consuming side of the pressure inside the pressure vessel becomes a predetermined amount or less, backflow cannot be prevented, and there is a drawback that liquids other than gas flow into the pressure vessel. there were.

In view of the above-mentioned conventional drawbacks, the present invention has been made.
(EN) A valve device capable of efficiently performing a high-pressure gas filling operation, reliably opening and closing a nozzle hole, and efficiently preventing a backflow of a liquid or the like into a pressure vessel. .

[0006]

In order to achieve the above-mentioned object, the present invention relates to a valve device attached to a stopper fixed to the mouth portion of a pressure vessel, so that the passage of the stopper is closed. A valve body screwed and fixed to the stopper, a nozzle hole having a small outer end formed on the valve body and a large diameter at a portion excluding the outer end, and a main valve operating hole communicating with the nozzle hole; A passage consisting of a sub valve actuation hole communicating with this main valve actuation hole,
A main valve that is slidably mounted in the main valve operation hole and that can open and close the nozzle hole and that does not close the main valve operation hole; and a position in the nozzle hole that is integrally formed with the main valve. And a check valve projecting into the slave valve actuating hole fixed to the main valve and a plunger whose tip is located in the large diameter part of the nozzle hole in a state where the main valve moves to the position where the nozzle hole is opened. An operating rod, a fitting having a through hole that is screwed and fixed to the valve main body at an end of the slave valve operating hole and communicates with the slave valve operating hole, and is mounted so as to be slidably movable in the slave valve operating hole. A secondary valve which can open and close the through hole of the mounting metal fitting and does not close the secondary valve operating hole, and the main valve operating hole formed in the secondary valve and the through hole of the mounting metal fitting are communicated with each other. From the communication hole and the main valve operating hole provided in the communication hole, Is inserted between the main valve and the slave valve, and the check valve is opened by pressing the check valve actuating rod to prevent passage from the through hole to the main valve actuating hole. A valve device is constituted by an urging spring that urges the main valve to close the nozzle hole and the sub valve in the direction to close the through hole.

[0007]

The valve device constructed as described above is a plunger
When is pushed in, the main valve slides in the opening direction,
The nozzle hole communicates with the main valve operating hole, the pressure gas in the pressure vessel opens the slave valve, passes through the slave valve operating hole, and is discharged (consumed) to the outside.

When the pressure on the discharge side becomes higher than the pressure in the pressure vessel during the discharge of the pressure gas to the outside, the slave valve is slid by the backflow pressure (relatively low pressure). Since the through hole is closed and the check valve is also closed, it is prevented from entering the pressure vessel.

When filling the pressure gas into the pressure vessel, first, the check valve actuating rod is pushed in to open the main valve and the check valve, and the residual pressure in the pressure vessel is discharged to operate the nozzle hole and the main valve. Moisture that has entered the hole is blown off and blown, and then the plug of the pressure vessel is connected to the high-pressure gas supply pipe, so that the plunger is driven by the pressure of the high-pressure gas.
Further, the check valve can be opened, and the pressure vessel can be filled through the nozzle hole, the main valve operating hole, the communication hole of the slave valve, and the through hole of the fitting.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the embodiments shown in the drawings.

In the first embodiment of the present invention shown in FIGS. 1 to 11, 1 is a soft drink water producing apparatus, and this soft drink water producing apparatus 1 has a solenoid valve 2 and a pump 3 as shown in FIG.
A carbonated water production container 5 communicated with a water pipe 4 via a carbon dioxide supply device 8 and a carbon dioxide gas supply device 8 for supplying the carbonated water production container 5 from a pressure vessel 6 filled with carbon dioxide gas via a supply passage 7.
A concentrated juice supply device 10 capable of supplying a predetermined amount of concentrated juice to the mixing chamber 9, and a cooling device 11 for cooling the concentrated juice supply device 10 and the carbonated water production container 5. It comprises a carbonated water supply device 14 for supplying the carbonated water in the carbonated water producing container 5 to the mixing chamber 9 via a pump 12 and a solenoid valve 13.

The pressure vessel 6 filled with the carbon dioxide gas is screwed and fixed to the pressure vessel body 15 filled with the carbon dioxide gas and the opening 16 of the pressure vessel body 15 as shown in FIGS. Mounting bracket 17 for the carbon dioxide supply device 8
It is composed of a spigot 18 connected by and a valve device 19 attached to the spigot 18.

As shown in FIGS. 5 to 7, the valve device 19 has a polygonal shape that engages with a threaded portion 22 threadedly engaged with a threaded portion 21 formed in a passage 20 of the spigot 18 and a tightening fitting such as a box wrench. O in which a shaped flange portion 23 is formed
A valve body 25 fixed to the spout 18 via a ring 24
And a nozzle hole 26 having a small diameter at the outer end formed on the valve body 25 and a large diameter at a portion excluding the end, and a main hole having a diameter larger than the nozzle hole 26 communicating with the nozzle hole 26. A passage 29 including a valve actuation hole 27 and a slave valve actuation hole 28 communicating with the main valve actuation hole 27, a screw portion 30 formed at the rear end of the slave valve actuation hole 28 of the valve body 25, and an O-ring. Three
The valve seat 32 for the slave valve screwed and fixed through 1 and the through hole 3 communicating with the passage 20 of the spigot formed in the substantially central portion.
3 is formed, and the main valve operating hole 27
The nozzle hole 26 slidably mounted inside
A main valve main body 37 capable of forming a plurality of gaps 36 in the outer peripheral portion which abuts on the valve seat 35 at the end of the nozzle opening and closes the nozzle hole 26,
A main valve 40, in which a synthetic resin sheet material is press-fitted or a rubber material 39 is baked and fixed in a recess 38 formed in a portion of the main valve main body 37 that comes into contact with the valve seat 35,
The main valve 40 is slidably inserted into the nozzle hole 26 integrally formed on the front surface of the center of the main valve 40. When the main valve 40 closes the nozzle hole 26, the tip of the main valve 40 is outward from the tip of the nozzle hole 26. Plunger 41 protruding inward and the main valve 4
The check valve actuating rod 42 fixed to the rear surface of the center of the No. 0 so as to project rearward, the slave valve supporting cylinder 43 fitted and fixed in the slave valve operating hole 28, and the slave valve supporting cylinder 43. Slave valve 4 with check valve 44 slidably inserted
5, and biases the slave valve 45 and the main valve 40 interposed between the slave valve 45 and the main valve 40 in the valve closing direction,
Biasing spring 46 for holding the residual pressure in the pressure vessel 6
It consists of and.

In this embodiment, a ball valve is used as the check valve 44. However, the present invention is not limited to this, and a check valve having a conventionally used needle valve shape may be used. You may use.

The slave valve 45 contacts the slave valve material 32 of the mounting member 34, and has a plurality of gaps 47 between the slave valve support cylinder 43 and the slave valve body 48, and the slave valve body 48. Four
8, an O-ring 50 for a seal housed in a recess 49 formed at a tip end portion that abuts the valve seat 32 for the slave valve;
A through hole 51 having a small diameter at the tip formed so as to penetrate substantially the center of the slave valve main body 48, a screw portion 52 formed at the outer periphery of the rear end of the slave valve main body 48, and this screw portion. 5
2 is threadedly engaged with the communication valve 5 at the rear end of the slave valve body 48.
1. Install a check valve seat 53 with a smaller diameter than the rear end of 1,
The check valve actuating rod 42 is inserted into the check valve seat fitting 54.

The check valve 44 of the slave valve 45 has a spherical check valve main body 55 that abuts against the check valve seat 53, and a check valve biasing member that constantly biases the check valve 55 toward the check valve seat 53 to close it. It is composed of a spring 56.

In the valve device 19 having the above-mentioned structure, the plug 18 of the pressure vessel 6 is connected by the fitting 17 of the carbon dioxide gas supply device 8 to make a plunger as shown in FIG.
The plunger 41 is pushed by the operating rod 57 so that the nozzle hole 26 and the main valve operating hole 27 communicate with each other.

Therefore, the carbon dioxide gas in the pressure vessel 6 opens the slave valve 45 by its pressure and passes through the through hole 33, the slave valve actuating hole 28, the main valve actuating hole 27 and the nozzle hole 26 of the fitting 34. And then discharged.

When the internal pressure of the pressure vessel 6 decreases and the relatively low pressure of the supply passage 7 of the carbon dioxide gas supply device 8 increases, the main valve 40 is open as shown in FIG. Although it flows back into the valve operating hole 27, the follower valve 45 is closed by the pressure and the check valve 44 is not opened by the pressure of the supply passage 7.
Since the urging force is set, it is possible to prevent the carbonated water from flowing back into the pressure vessel 6 without opening the valve.

When the pressure vessel 6 is filled with carbon dioxide gas,
First, as shown in FIG. 10, the plunger 41 is pressed to move the main valve 40 in the same direction to open the valve, and at the same time, the check valve 44 is opened by the check valve actuating rod 42 so that the remaining pressure in the pressure vessel 6 remains. The carbonated water that has entered the nozzle hole 26 and the main valve operating hole 27 by pressure is blown and blown off.

Then, as shown in FIG. 11, the valve device 19 of the blown pressure vessel 6 was connected to a carbon dioxide gas supply hose 59 through an O-ring 58 to supply high-pressure carbon dioxide gas to the plunger. The tip of -41 is pushed to the large diameter portion of the nozzle hole 26, and the main valve 40 also moves in the same manner, so the nozzle hole 26 is opened, high pressure gas enters the main valve operating hole 27, and the check valve main body 55 is opened. The check valve urging spring 56 presses against the urging force to open the valve.

Therefore, the high-pressure carbon dioxide gas is discharged from the nozzle holes 26,
The pressure vessel 6 is filled through the main valve actuation hole 27, the communication hole 51 of the slave valve 45 and the through hole 33 of the fitting 34.

When the plug 18 of the pressure vessel 6 is not connected to the carbon dioxide gas supply device 8, the main valve 40 is biased in the valve closing direction by the biasing spring 46 as shown in FIG. The gas in the pressure vessel 6 is never discharged to the outside.

[0024]

Different Embodiments of the Present Invention Next, different embodiments of the present invention shown in FIGS. 12 to 17 will be described. In the description of these different embodiments of the present invention, the same components as those of the first embodiment of the present invention will be designated by the same reference numerals and redundant description will be omitted.

The second embodiment of the present invention shown in FIGS. 12 to 14 is mainly different from the first embodiment of the present invention in that the slave valve main body 48A can be screwed and fixed substantially at the center. The check valve 44 can be inserted into the communication hole 51. Therefore, even if the valve device 19A is configured by using the slave valve 45A formed as described above, the check valve 44 can be installed as in the first embodiment of the present invention. Similar effects can be obtained.

The third embodiment of the present invention shown in FIGS. 15 to 17 is mainly different from the first embodiment of the present invention in that a plurality of grooves are provided on the outer peripheral portion of the cylindrical main valve main body 37A. The main valve 40A having the passage 60 in the shape of a groove is used, and a plurality of passages 61 in the shape of a groove are formed on the outer peripheral portion of the cylindrical valve body 48B.
In the point that the sub valve 45B having the above structure is used, even if the valve device 19B is configured by using the main valve 40A and the sub valve 45B thus formed, the same operation as that of the first embodiment of the present invention is performed. The effect is obtained.

In each of the above embodiments, the nozzle hole 26 is described as having a small diameter at the front end and a large diameter at the rear end, but the present invention is not limited to this, and the entire diameter is the same. Even if the nozzle hole formed in the above is used, the filling efficiency is deteriorated, but the same effects as those of the respective examples can be obtained.

[0028]

As is apparent from the above description, the following effects can be obtained in the present invention.

(1) In a valve device attached to a stopper fixed to the mouth of a pressure vessel, a valve body screwed and fixed to the stopper so as to close a passage of the stopper, and the valve body. A nozzle hole having a small diameter on the outer end and a large diameter on the portion excluding the tip, a main valve operating hole communicating with the nozzle hole, and a slave valve operating hole communicating with the main valve operating hole. And a main valve capable of opening and closing the nozzle hole slidably mounted in the main valve operating hole and not closing the main valve operating hole, and the nozzle integrally molded with the main valve. A plunger located in the hole and having a tip portion located in the large diameter portion of the nozzle hole in a state where the main valve moves to a position where the nozzle hole is opened, and a secondary valve actuating hole fixed to the main valve. The protruding check valve operating rod is screwed into the valve body at the end of the slave valve operating hole. A fitting having a through hole communicating with the specified slave valve operating hole, and a through hole of the mount fitting slidably mounted in the slave valve operating hole can be opened and closed and the slave valve operating hole can be closed. A secondary valve, a communication hole for communicating the main valve operating hole formed in the secondary valve with the through hole of the mounting member, and the main valve operating hole provided in the communication hole, A check valve that is capable of passing through the through hole and that is opened by pressing the check valve operating rod that blocks passage through the through hole to the main valve operating hole, and an interposition between the main valve and the slave valve. Since the main valve is constituted by an urging spring which urges the main valve to close the nozzle hole and urges the sub valve in the direction to close the through hole, the main valve and the sub valve are interposed. A backflow below a predetermined pressure can be prevented by the force spuff ring and the check valve of the slave valve. Therefore, it is possible to efficiently prevent the reverse flow of water into the pressure vessel, causing the pressure vessel to corrode, lowering the durability, and causing an explosion accident.

(2) According to the above (1), when the high-pressure gas is filled in the pressure vessel, the plunger can be positioned at the large diameter portion of the nozzle hole and can be filled by utilizing the large gap, so that the efficiency can be improved. At the same time, during normal gas outflow, the plunger moves through the small-diameter nozzle hole to open and close the main valve, so the main valve can be opened and closed reliably, and problems due to rattling can be reliably prevented. You can

(3) According to the above (1), the residual pressure in the pressure vessel is maintained by pushing the plunger before the high pressure gas is filled in the pressure vessel and pressing the check valve with the check valve actuating rod to open it. With this, it is possible to blow water or the like that has entered the main valve operating hole or the nozzle hole.

(4) According to claim 2, the same effects as those of the above (1) to (3) can be obtained.

(5) According to claim 3, the same effects as those of the above (1) and (3) can be obtained.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a usage example of a first embodiment of the present invention.

2 to 4 are explanatory views of a pressure vessel using the first practical example of the present invention.

FIG. 5 is a sectional view of the first embodiment of the present invention.

6 is a cross-sectional view taken along line 6-6 of FIG.

7 is a cross-sectional view taken along line 7-7 of FIG.

8 to 11 are sectional views for explaining the operation of the first embodiment of the present invention.

12 to 14 are explanatory views showing a second embodiment of the present invention.

15 to 17 are explanatory views showing a third embodiment of the present invention.

FIG. 18 is an explanatory view showing a conventional valve device.

[Explanation of symbols]

1: Soft drink water manufacturing device, 2: Solenoid valve, 3:
Pump, 4: Water pipe, 5: Carbonated water production container, 6: Pressure container, 7: Supply passage, 8: Carbon dioxide gas supply device, 9:
Mixing chamber, 10: Concentrated juice supply device, 11: Cooling device, 12: Pump, 13: Solenoid valve, 14: Carbonated water supply device, 15: Pressure vessel main body, 1
6: Opening part, 17: Mounting bracket, 1
8: Mouth plug, 19, 19A, 19B: Valve device, 20:
Passage of spout, 21: screw part, 2
2: screw part, 23: flange part, 2
4: O-ring, 25: valve body, 2
6: Nozzle hole, 27: Main valve operating hole, 2
8: Secondary valve operating hole, 29: Passage,
30: screw part, 31: O-ring, 3
2: valve seat for slave valve, 33: through hole,
34: Mounting bracket, 35: Valve seat,
36: gap, 37, 37A: main valve body, 3
8: concave portion, 39: rubber material, 40,
40A: Main valve, 41: Plunger, 4
2: Check valve operating rod, 43: Secondary valve support cylinder,
44: check valve, 45, 45A, 45B: slave valve, 46: biasing spring, 47: gap,
48, 48A, 48B: Conventional valve body,
49: concave portion, 50: O-ring for seal, 51: communicating hole, 52:
Screw part, 53: Check valve seat, 54: Check valve seat mounting bracket, 55: Check valve body,
56: check valve biasing spring, 57: plunger actuating rod, 58: O-ring, 59: carbon dioxide gas supply hose, 60: passage, 61: passage.

Claims (3)

[Claims] 1. A valve device attached to a mouth plug fixed to a mouth of a pressure vessel, wherein a valve body screwed and fixed to the mouth plug so as to close a passage of the mouth plug, and the valve body A nozzle hole having a small diameter at the formed outer side tip end and a large diameter at a portion excluding the tip end portion, a main valve operating hole communicating with the nozzle hole,
It is possible to open and close the passage formed of a slave valve actuating hole communicating with the main valve actuating hole and the nozzle hole slidably mounted in the main valve actuating hole, and never closing the main valve actuating hole. A main valve and a plunger located in the nozzle hole integrally formed with the main valve, the tip of which is located in the large diameter part of the nozzle hole in a state where the main valve moves to a position where the nozzle hole is opened; A check valve actuating rod projecting into the slave valve actuating hole fixed to the main valve, and a through hole communicating with the slave valve actuating hole screwed and fixed to the valve body at the end of the slave valve actuating hole. And a slave valve which is slidably mounted in the slave valve actuating hole and which can open and close the through hole of the mount metal and does not close the slave valve actuating hole. Communication hole that connects the main valve operating hole and the through hole of the mounting bracket , A check that opens by pressing the check valve operating rod that allows passage from the main valve operating hole provided in the communication hole to the through hole and prevents passage from the through hole to the main valve operating hole A valve and an urging spring that urges the main valve interposed between the main valve and the slave valve to close the nozzle hole and urge the slave valve to close the through hole. Valve device. 2. A valve device attached to a stopper fixed to the mouth of a pressure vessel, wherein a screw portion screwed and fixed to the mouth so as to close a passage of the mouth and a fastening metal fitting. A valve body having a polygonal flange portion formed on the outer peripheral portion, a nozzle hole having a small outer end formed on the valve body and a large diameter at a portion excluding the outer end, and communicating with the nozzle hole. A passage having a main valve operating hole and a sub valve operating hole communicating with the main valve operating hole, and a gap in an outer peripheral portion for opening and closing the nozzle hole slidably mounted in the main valve operating hole. A main valve and a plunger located in the nozzle hole integrally formed with the main valve, the tip of which is located in the large diameter part of the nozzle hole in a state where the main valve moves to a position where the nozzle hole is opened; A check protruding to the slave valve actuation hole fixed to the master valve. A valve actuating rod, a fitting having a through hole communicating with the slave valve actuating hole screwed to the valve body at the end of the slave valve actuating hole, and slidable in the slave valve actuating hole. A secondary valve having a gap in the outer peripheral portion for opening and closing the through hole of the mounting metal fitting mounted on, and a communication hole for communicating the main valve operating hole formed in the secondary valve and the through hole of the mounting metal fitting, A check valve that can be passed from the main valve operating hole provided in the communication hole to the through hole and that is opened by pressing the check valve operating rod that prevents passage from the through hole to the main valve operating hole. And a biasing spring that biases the main valve interposed between the main valve and the slave valve in a direction to close the nozzle hole and close the slave valve in the through hole. Valve device to do. 3. A valve device mounted on a stopper fixed to the mouth of a pressure vessel, wherein a valve body screwed and fixed to the stopper so as to close a passage of the stopper, and a valve body A passage formed of a nozzle hole formed, a main valve operating hole communicating with the nozzle hole, and a slave valve operating hole communicating with the main valve operating hole; and a passage slidably mounted in the main valve operating hole. A main valve that can open and close the nozzle hole and does not close the main valve operating hole, a plunger that is integrally formed with the main valve and that is located inside the nozzle hole, and the slave valve that is fixed to the main valve. A check valve actuating rod projecting into the actuating hole; a fitting having a through hole communicating with the slave valve actuating hole screwed to the valve body at the end of the slave valve actuating hole; and the slave valve actuating hole. You can open and close the through hole of the mounting bracket that is slidably mounted inside. And a communication hole that does not close the slave valve operation hole, a communication hole that communicates the main valve operation hole formed in the slave valve with the through hole of the mounting bracket, and a communication hole provided in the communication hole. A check valve which can be passed from the main valve operating hole to the through hole, and which is opened by pressing the check valve operating rod to prevent passage from the through hole to the main valve operating hole; and the main valve, A valve device, comprising: a main valve interposed between the slave valve and the slave valve; and a biasing spring that biases the slave valve in the direction of closing the nozzle hole and the through hole.