JPH08276946A - Pop-up preventing method for spear tube type plug for pressure beer barrel - Google Patents

Abstract

PURPOSE: To prevent by a simple means a spear tube type plug from popping up when the spear tube type plug is removed from a pressure beer barrel for which the spear tube type plug is mounted by screwing. CONSTITUTION: A vent 8 for making an annular space between the external wall of a drum part 5 of a spear tube type plug and the internal wall of a mouthpiece 4 of a beer barrel communicate with the open air is bored either to the capsule 4 of the drum part of the spear tube type plug or the capsule 4 of the beer barrel.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing a spear tube type stopper from popping out in a pressure type via barrel having a spear tube type stopper attached thereto by screwing, and a pressure type via barrel and a spear tube type stopper having a protrusion preventing means. .

[0002]

[Prior art]

As is well known, the pressure type beer barrel is provided with a spear tube type stopper having a function of being used for injecting and pouring beer and injecting carbon dioxide gas for pressurization and also for cleaning the inner surface of the beer barrel. A so-called special stopper is commonly used. Spear tube type stoppers include via valves, gas valves,
It consists of a body that houses via springs, gas springs, via spring holders, etc., and a down tube that hangs down from it. Since it is firmly attached to the barrel, it is unlikely that the spear tube type stopper will come off or pop out of the via barrel during normal use. However, when removing the spear tube stopper for cleaning or repair, if the barrel is not sufficiently exhausted and there is residual pressure, the male screw of the spear tube stopper and the female screw of the base are disengaged at the same time. The spear tube type plug suddenly jumped upward like a rocket, often resulting in accidents such as worker injuries and property damage.

In order to prevent such accidents, spear tube type stoppers equipped with pop-out preventing means have been proposed, and some of them have already been commercialized and widely used in Europe. One of the products that has been commercialized is one that incorporates a pop-out prevention pin that protrudes into the body and is retractable, but this requires a dedicated device only for that purpose. Also, there is a down tube equipped with a pop-out means consisting of a pair of hinge-shaped metal members, which requires that the barrel be tumbled in order to close the hinge in order to remove the stopper from the barrel. . Moreover, these means are extremely difficult to apply to the conventional spear tube type stoppers that are already manufactured or are currently used.

Therefore, the present inventor has previously proposed a spear tube type plug in which a pop-out preventing metal piece protruding to one side is attached to the outer surface of the down tube so as to prevent the pop-out from occurring (Patent 1994). Wish No. 19223
No. 0). The spear tube type stopper according to this proposal has an advantage that it can be easily attached and detached without requiring any special equipment or procedure and that the existing spear tube type stopper can be modified and produced, Requires a considerable amount of manpower and materials, and has protrusions that are more fragile than the main body, so it requires careful handling and is troublesome to clean.

[Problems to be Solved by the Invention]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a spear tube type stopper preventing means which does not have the above-mentioned drawbacks of the prior art.

[Means for Solving the Problems]

According to the present invention, in a pressure type viar having a spear tube type stopper attached thereto by screwing, the outer wall of the body part of the spear tube type stopper and the suber barrel are attached to the body of the spear tube type stopper or the cap of the via barrel. The spout tube type plug can be completely prevented from popping out at the time of removal by forming a fumarole communicating with the outside air in the annular space between the inner wall of the base.

The present invention will be described in more detail below with reference to the drawings. As schematically shown in FIG. 1 (barrel A shows a cross section), in general beer, especially draft beer, a spear tube type plug B including a body part 5 and a down tube 6 is attached to a mouthpiece 4 in a beer factory. The barrel A is filled and delivered to a liquor store, a restaurant or the like, and at the time of pouring beer in the restaurant or the like, a dispense head C 1 , a dispenser D 1 , a pouring currant E 1 , a pressure reducing valve F and a carbon dioxide gas cylinder G are attached. After the beer has been poured out, the dispense head C , dispenser D , pouring currant E , pressure reducing valve F and carbon dioxide cylinder G are removed from the barrel A , and the spear tube stopper B is removed.
It will be returned to the brewery with only the one attached. Spear tube plugs B are barrels for months or years
Although it is not removed from A, accidents due to popping out often occur as described above when it is broken down or when it is removed for regular maintenance and inspection.

【Example】

FIGS. 2 and 3 show a part of the barrel body 1 and the cross section of the mouthpiece 4 and a spear tube type plug B (partially cutaway cross section). The combination of the barrel mouthpiece 4 and the down tube body 5 according to the present invention. In the case of, with the down tube tightly screwed in as shown in FIGS. 2 (a) and 3 (a), it is sealed with the gasket 7 as in the case of the usual combination of the spear tube type plug and the cap. Although the pressurized gas in the barrel does not leak out, as shown in Fig. 2 (b) and 3 (b),
When the spear tube type plug B is unscrewed several times for removal, the pressurized gas remaining in the barrel almost instantaneously creates a gap generated between the gasket 7 and the step 9 of the base 4 and the spear tube type. It spouts from the spout hole 8 through the annular gap between the outer wall of the body 5 of the stopper and the inner wall of the mouthpiece 4, and the pressure in the barrel becomes normal pressure. Therefore, the spear tube is released until the engagement with the mouthpiece 4 is released. Even if the mold stopper B is unscrewed, it does not suddenly pop out.

The number of ejection holes 8 is not particularly limited, and one is sufficient when the barrel has a small capacity, but 2 when the barrel has a large capacity.
It is also possible to provide one or more. Further, there is no particular limitation on the position where the ejection hole 8 is bored, and the spear tube type plug
When B was unscrewed several times, generally 2-3 times, the residual pressurized gas generated a gap between the gasket 7 and the stepped portion 9 of the mouthpiece 4 and the outer wall of the body portion 5 of the spear tube type stopper and the mouthpiece 5. It can be provided at any position as long as it is guaranteed that the gas is ejected from the ejection hole 8 through the annular gap between the inner wall 4 and the inner wall. Furthermore, the direction of the ejection hole 8 is not particularly limited, but it is desirable to form the ejection hole 8 in a direction in which the length of the ejection hole is as short as possible.

EFFECTS OF THE INVENTION By the extremely simple means of forming a spout hole in the body of a spear tube type plug or the mouthpiece of a beer barrel, without impairing the function of the spear tube type plug,
The accident due to the popping out can be prevented, and in addition, it can be applied to a ready-made spear tube type stopper and a beer barrel.

[Brief description of drawings]

FIG. 1 is a reference diagram for explaining the present invention.

FIG. 2 is a diagram showing an embodiment of the present invention.

FIG. 3 is a view showing another embodiment of the present invention.

[Explanation of symbols] A Beer barrel 4 Base 4a Female thread B Spear tube type stopper 5 Body 5a Male thread 6 Down tube 7 Gasket 8 Fume hole 9 Base step

Claims (5)

[Claims] 1. A pressure type viar having a spear tube type stopper attached thereto by screwing, wherein an outer wall of the spear tube type stopper body and an outer wall of the spear tube type stopper body and an inner wall of the via barrel base. A method for preventing spear tube type plugs from popping out, characterized in that a fumarole communicating with the outside air is provided in the annular space between the spear tube type plugs. 2. The method according to claim 1, wherein a fumarole is formed in the body of the spear tube type plug. 3. The method according to claim 1, wherein a fumarole is formed in the base of the vial barrel. 4. A pressurization type vial of a type to which a spear tube type plug is attached by screwing, wherein a spout is provided in the base. 5. A spear tube type plug which is attached to a cap of a pressure type viar by screwing, wherein a fumarole is formed in the body.