JPH0121264Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a gas tank used, for example, for circulating and shutting off city gas, LP gas, and other gases.

The gas tank mentioned above is installed as a safety device on an outdoor gas supply pipe, for example.
In conventional gas kettles of this type, the rotating member of the valve inside the gas kettle body directly or indirectly protrudes outside the gas kock body and is exposed alone, so a regular opening/closing device that has a fitting part for this rotating shaft is used. Even a third party who does not have a lever can open and close the valve without any problem using other tools or parts, so it is possible for the valve to be opened or closed without the knowledge of the normal gas user, causing gas to flow out or be shut off. There were major problems such as the inconvenience of gas leaks and the risk of gas leak accidents.

This invention was devised to solve the above-mentioned problems all at once, and its purpose is to remove the valve inside the gas tank body from a regular lever that is compatible with the rotating member of the valve that is exposed outside the gas tank body. It is designed to prevent unauthorized opening/closing operations by a third party by preventing unauthorized opening/closing operations by a third party, and is easy to handle and safe because the regular lever cannot be attached or detached except when the gas flow path is blocked. The aim is to provide gaskotsuk.

Hereinafter, the present invention will be explained with reference to illustrated embodiments. The gas kettle in this example is illustrated for a two-way kettle type. This gas tank main body 1 is connected to a gas supply pipe through screw holes 14 in connecting parts 5 at both ends thereof, and a truncated conical shape is provided in the central gas tank part 2 of the gas tank main body 1. A valve chamber 4 is formed. A substantially truncated conical valve 6 is tightly integrated into the valve chamber 4 by using a seat 7 that is tightly inserted into the valve chamber 4. The valve 6 is rotatably held in a fixed position by having a flange portion 18 at its upper end engaged with a locking ring 8 installed in an opening 29 at the upper end of the valve portion 2. The amount of rotation when opening and closing the gas lock is regulated (180 degrees) by using the locking recess 30 formed in the locking recess 30 and the locking protrusion 13 formed in the locking portion 2. As a result, the flow hole 17 formed in the center of the valve 6 can be switched to be in communication with or blocked from the flow passages 15, 15 formed on both sides in the gas tank body 1. Note that the valve chamber 4, seat 7, and valve 6 all have the same taper and are in close contact with each other. Furthermore, openings 31, 31 are formed on both sides of the sheet 7 to constantly communicate with the flow passages 15, 15.

A circular cap-shaped lid 11 is fixedly fitted into the opening 29 at the upper end of the gas tank part 2 of the gas tank main body 1. A protective tube 21 is provided protruding from the center of the upper surface of the lid 33 of the lid 11, and a portion of the protective tube 21 that hangs down from the lower surface of the lid 33 is cylindrical and protrudes from the upper surface of the lid 33. The portion is split into a cylindrical shape to form a pair of cylindrical pieces 21a, 21a, and cleaning ports 32, 32 for removing dust, etc. are formed between the cylindrical pieces 21a, 21a. Further, grooves 2 are provided on the outer peripheral surfaces of both cylindrical pieces 21a, 21a.
2 and 22 are provided around the perimeter.

A rotating shaft 19 corresponding to a valve stem is protruded from the center of the upper end of the valve 6, and this rotating shaft 19 is inserted into the lower cylinder portion of the protective cylinder 21 through a seal ring 9 in an airtight state. It is rotatably supported integrally with the valve 6. Further, an engagement shaft portion 25 formed at the upper end of the rotation shaft 19 protrudes from the center of the upper surface of the lid portion 33, and both cylinder pieces 21a, 21a of the protection cylinder 21
They are located at the center of the center with an appropriate distance G between them. Note that the engagement shaft portion 25 is connected to both cylinder pieces 21a of the protection cylinder 21,
It is desirable not to protrude more than 21a.

A protective tube 2 is attached to the regular lever 10 for rotating the valve 6.
A circular fitting cylinder 27 with a lid is formed to fit the outer periphery of both cylinder pieces 21a, 21a of the fitting cylinder 2.
7 has both cylindrical pieces 21a, 21a and an engaging shaft portion 2.
An engagement tube 26 that can be fitted between the two is formed. Furthermore, an engagement hole 28 into which the engagement shaft portion 25 can be fitted is vertically formed inside the engagement tube 26 . On the other hand, the locking member 12
(by press-fitting a locking pin, screwing a locking screw, etc.) to lock the grooves 22, 22 provided around the cylinder pieces 21a, 21a, and a portion thereof. Moreover, this locked state is caused by the flow path 1 of the gas tank main body 1.
The positions of the cleaning ports 32, 32 and the locking member 12 are set so that they are released only when the cleaning port 5 is in the blocked state.

In the gas tank of this example configured as described above, the rotation shaft 19 of the valve 6 in the gas tank main body 1 is
Although the engaging shaft portion 25 is exposed outside the lid 11, it is covered within the two cylindrical pieces 21a, 21a of the protective tube 21, so that it cannot be used with levers other than the regular lever 10, such as pliers, wrenches, etc. Even if an attempt is made to open and close the valve using the tools, the gripping portions of these tools are blocked by the two cylindrical pieces 21a, 21a of the protective tube 21 and cannot grip the engagement shaft portion 25. It cannot be opened or closed.

Therefore, in order to perform normal opening and closing operations in the gas kettle of this example, the regular lever 10 described above must be used, but in addition, the regular lever 10 must be attached to and detached from the gas kettle main body 1 through the flow path 15. This is possible only when the is in a blocked state. That is, if the normal gas user or administrator keeps the regular lever 10 and it is not attached to the gas tank main body 1, the gas tank is always in a cut-off state.

Next, when the flow passage 15 of the gas tank main body 1 is placed in a communicating state, the fitting tube 27 of the regular lever 10 is
are fitted onto the outer peripheries of both cylindrical pieces 21a, 21a of the protective cylinder 21 and set. As a result, as shown in FIG.
The engagement hole 28 is fitted between the engagement shaft portion 2 and the engagement hole 28.
5, the valve 6 and the regular lever 10 are connected, so by rotating the regular lever 10, the fitting tube 27 and the protection tube 21 can be used as rotational fulcrums to smoothly and stably operate the valve 6 and the regular lever 10. It is rotated and becomes in a gas communication state. In this state, the locking member 12 attached to the regular lever 10 is locked in the groove 22 of the cylinder piece 21a, making it impossible to attach or detach the regular lever 10 from the gas tank main body 1 (FIG. 5).

In addition, to switch off again, use the regular lever 1.
0 can be rotated 90 degrees in the opposite direction or an additional 90 degrees in the forward direction. In this state, since the locking member 12 is located in the cleaning opening 32, the lock is released from the groove 22 of the cylinder piece 21a, making it possible to attach and detach the regular lever 10 (FIG. 6).

In this way, in the gas tank of this example, the engaging shaft portion 25 of the valve 6 is covered with the protective tube 21 and cannot be operated with other tools, and the regular lever 10 can be opened and closed easily and smoothly. It can be operated. Especially in this example, the lid 1 of the gas kettle body 1
Since cleaning holes 32, 32 are formed in the protection tube 21 of No. 1, even if dust or the like enters the gap G between the protection tube 21 and the engagement shaft portion 25, it can be easily removed and removed. Engagement tube 2 between mating shaft portion 25 side and regular lever 10
6 and can be properly engaged at all times without any defective fitting. Furthermore, the locking member 12 of the regular lever 10
Due to the locking by the groove 22 of the cylindrical piece 21a of the protective cylinder 21, it is impossible to attach or detach the regular lever 10 with the gas stick in a half-opened state, making it extremely safe.

Therefore, the gas tank of the present invention can be opened and closed accurately, easily, and smoothly using the regular lever, prevents unauthorized operation by a third party using a lever other than the regular lever, and is completely free of gas. Since it is impossible to attach or remove the regular lever unless it is in a shut-off state, it is extremely safe, especially in collective piping, because if you set up a central storage area for regular levers, you can easily manage numerous gas tank situations depending on the presence or absence of regular levers. , and allows for extremely simple handling.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention. Fig. 1 is a front sectional view showing the gas tank of this example in the open state, Fig. 2 is a plan half sectional view showing the gas tank in the closed state with the regular lever removed, and Fig. 3 4 is a partially cutaway plan view showing the set state of the regular lever, FIG.
Figure 6 is a partial sectional view taken along line A-A in Figure 1.
FIG. 1...Gaskotoku body, 6...Valve, 10...
... regular lever, 11 ... lid, 12 ... locking member, 15 ... flow path, 19 ... rotating shaft, 21 ...
Protective tube, 21a...tube piece, 22...groove, 25...
Engagement shaft portion, 26... Engagement cylinder, 27... Fitting cylinder, 2
8... Engagement hole, 32... Cleaning port.

Claims (1)

[Claims for Utility Model Registration] Consisting of a pair of cylindrical pieces 21a, 21a, which are in the shape of a two-split cylinder and are provided with grooves 22, 22 on the upper surface of the lid part 33 that covers the valve 6 in the gas tank body 1. While protruding the protection tube 21, the rotation shaft 1 of the valve 6
The engagement shaft portion 25 of No. 9 is made to protrude outside the lid portion 33 and positioned within the protection tube 21 with an appropriate interval, and the engagement hole 28 of the engagement tube 26 provided in the regular lever 10 for the valve 6 is inserted. Engagement shaft portion 25 of the valve 6
and the regular lever 10 has a groove 22 in at least one of the cylinder pieces 21a, 21a forming the protection cylinder 21 when the gas flow path 15 is in a lever position other than the blocked state. A gas tank characterized in that a locking member 12 is mounted at a position where the locking member 12 is engaged and disengaged from the groove 22 when the lever position is such that the gas flow path 15 is in a blocked state.