JPH0730557Y2 - Pressurized gas supply connector for beverage dispensers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a structure of a pressurized gas supply connector used in a pressure-type beverage dispenser.

[Conventional technology]

As a pressurized gas supply connector that connects to the beverage container of the pressure-type beverage dispenser described above and introduces the gas supplied from the pressurized gas source (carbon dioxide pressure cylinder) into the beverage container, an excessive gas inside the connector A built-in relief valve that releases pressure to the outside of the system
-67500 is proposed by the same applicant.

The structure is that the check ball is applied to the valve seat of the gas escape passage that opens in the recess of the guide incorporated in the connector, and this check ball is applied to the valve seat from behind by a screw-type stop guide via an urging spring. The stopper guide is configured to have an external discharge hole that is open to the outside and that holds the stopper guide.

[Problems to be solved by the device]

In the relief valve having the above structure, the stop guide needs to be screwed in while pushing the biasing spring during assembly, and the screwing operation is troublesome. If the screwing amount is excessive or insufficient, the valve body is pressed against the valve seat. Since the spring force changes, it is troublesome because the operating pressure of the relief valve needs to be adjusted again.

Further, since the gas discharge hole opened in the stop guide remains open, there is a drawback that dust or the like may enter the hole during a long-term use and become clogged, which may hinder the operation of the relief valve.

The present invention has been made in view of the above points, and provides a pressurized gas supply connector with a reliable relief valve that eliminates the drawbacks of the conventional structure and has an assembling property and a dustproof function. The purpose is to do.

[Means for Solving the Problems]

In order to solve such a problem, the connector according to the present invention is provided with a valve body-equipped pivot in which a relief valve is arranged to face a valve seat on the side of a gas escape passage communicating with the outside of the system, and a locking stopper for guiding and supporting the pivot. , A compression spring that is interposed between the pivot and the stopper stopper piece to press and urge the valve body against the valve seat, and screwed into the fixed part of the pressurized gas supply connector to prevent the stopper stopper piece from coming off. The stopper ring is fixed, and the dustproof cap is fitted on the top of the stopper ring.

[Action]

With the above configuration, the stopper piece is engaged with the guide on the connector side while being pressed by the biasing spring of the pivot at the time of assembly, and the stopper piece is fixed and held in place by screwing the stopper ring. . In addition, the dust-proof cap fitted on the top of the stopper ring blocks the open end of the gas escape passage leading to the outside of the system to prevent dust from entering from the surroundings, and when the relief valve operates due to excessive gas pressure. Acts to be blown off by the gas pressure ejected through the valve.

〔Example〕

1 and 2 are block diagrams of an embodiment of the present invention. In the figure, 1 is a beverage container, 2 is a gas inlet connector provided in the beverage container 1, and 3 is a pressurized gas supply connector.
The gas inlet connector 2 has a built-in check valve (not shown) which is opened by coupling with the pressurized gas supply connector 3, and engages with the connector 3 via the engaging pin 4 and the bayonet type holder 3. It is connected to the bayonet type holder 3a through the pin 4. On the other hand, in the pressurized gas supply connector 3, a guide 5 holding a projecting pin (not shown) for opening the check valve on the side of the gas inlet connector 2 is screwed into the body from the top. A gas inlet 6 connected to a hose (not shown) drawn from a carbon dioxide pressure cylinder is provided on the side. Also, the guide 5
A gas escape passage 7 communicating with the gas inlet 6 is bored in the shaft of the shaft, and this passage opens at the top of the connector 3.

On the other hand, at the top of the connector 3, a relief valve 8 is incorporated in a recess of the guide 5 where the gas escape passage 7 opens. The relief valve 8 includes a valve body 9 that comes into contact with a valve seat formed at the open end of the gas escape passage 7, a pivot 10 to which the valve body 9 is attached, and a stopper piece 1 that guides and supports the pivot 10.
1, an assembly including a compression spring 12 interposed between the pivot 10 and a stopper piece 11, a screw-in type stopper ring 13, and a dustproof cap 14.

The stopper piece 11 is T
Key-shaped protrusions 15 are formed on both ends of the character-shaped piece, and a key-shaped notch groove 16 of the same shape is formed on the top of the guide 5 so as to face the key-shaped protrusions 15. Here, the stopper piece 11 is set while pushing the spring 12 with the pivot 10 and the spring 12 loaded in the recess of the guide 5, and the key-shaped projection 16 is fitted into the notch groove 16 on the mating side and engaged at that position. Hold hold. Further, from above, the stopper ring 13 is attached to the thread portion 17 of the guide 5.
By screwing in, the stopper piece 11 is locked in place and fixed. The dustproof cap 14 is lightly fitted on the inner peripheral side of the stopper ring 13. The compression spring 12 is set in advance to press the valve body 9 against the valve seat with a predetermined spring force.

With such a structure, when an excessive gas pressure of a predetermined pressure or more is applied to the connector 3 from the carbon dioxide pressure cylinder side through the gas inlet 6 during use, the relief valve 8 is actuated by pushing up the valve body 9 against the spring 12. Then, the dustproof cap 14 is blown out to release the gas pressure to the outside. This safely protects the beverage container from excessive gas pressure. Moreover, since the dustproof cap 14 closes the open end of the gas escape passage when in use, dust does not enter the inside of the valve from the outside, and the relief valve becomes unstable due to clogging with dust. Operation can be avoided.

Further, since the stopper piece 11 is engaged with and retained by the guide 5 so as to press the compression spring 12 as described above, the work of assembling into the connector is easy and the mounting position thereof is uniquely determined. Therefore, as long as the quality of the compression spring 12 is constant, no special spring pressure adjustment is required after assembly.

[Effect of device]

Since the pressurized gas supply connector with the relief valve according to the present invention is configured as described above, it has the following effects.

(1) Easy to assemble the relief valve into the connector,
In addition, stable operation characteristics of the relief valve can be set without requiring special spring pressure adjustment work.

(2) Since the dust-proof cap is provided, it is possible to prevent dust and the like from entering the relief valve from the outside and improve reliability.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial cross-sectional configuration diagram of a pressurized gas supply connector according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the relief valve mechanism in FIG. In the figure, 1: Beverage container, 3: Pressurized gas supply connector, 5: Guide,
6: Gas inlet, 7: Gas escape passage, 8: Relief valve, 9: Valve body, 10: Pivot, 11: Stopper piece, 12: Compression spring, 13: Stopper ring, 14: Dustproof cap.

Claims (1)

[Scope of utility model registration request] 1. A pressurized gas supply connector which is connected to a beverage container and introduces gas supplied from a pressurized gas source into the beverage container, which has a relief valve built therein for releasing excessive gas pressure to the outside of the system. In the pressurized gas supply connector described above, the relief valve is provided with a valve body-equipped pivot arranged opposite to a valve seat on the side of a gas escape passage communicating with the outside of the system, a locking stopper piece for guiding and supporting the pivot, and the pivot. A compression spring which is interposed between the stop stopper piece and the valve body to press and urge the valve body against the valve seat, and a stopper ring which is screwed into the fixing portion of the pressurized gas supply connector to prevent the locking stopper piece from slipping off. A pressurized gas supply connector for a beverage dispenser, which comprises a dust-proof cap fitted to the top of the stopper ring.