JPH0247817Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a gas tank having a double valve. When the valve is half open, gas does not flow out, and gas can only flow out when the valve is fully open, which is the normal state.
It has excellent safety by having a heavy-duty valve, and is easy to operate as the second valve means can be opened and closed by simply rotating the knob that rotates the rotary valve, and it also uses a magnet. To provide a gas tank which has a simple structure and does not require a mechanical mechanism for interlocking the rotary valve and the second valve means in the tank main body since the second valve means can be opened and closed.

The gas tank of the present invention includes a rotary valve 3 that opens and closes a gas passage 2 in the gas passage 2 of the gas tank body 1;
a second valve means A for opening and closing another part of the gas passage 2;
and a knob 10 for rotating the rotary valve 3.
, a first magnet 14 provided on the knob 10, and a second magnet 17 provided on the second valve means A, and only when the rotary valve 3 is fully opened or almost fully opened, the first magnet 14 and the second magnet 14 are Due to attraction or repulsion with the magnet 17, the second
The valve means A is set to open the gas passage 2 by being moved. The present invention will be explained in detail below with reference to Examples. A rotary valve 3 for opening and closing the gas passage 2 is installed approximately in the center of the pot body 1. Reference numeral 5 denotes a knob body which is movable up and down relative to the rotary valve 3, and is prevented from coming off by a cover 6 attached to the knob body 1. By pushing the knob body 5 downward against the coil spring 7, a notch (not shown) on the lower edge of the knob body 5 fits into a pin 9 inserted into a recess 8 on the top surface of the rotary valve 3. By rotating the knob main body 5 in this state, the rotary valve 3 is rotated via the pin 9 to open and close part of the gas passage 2. A magnet mounting member 11 is attached to the knob body 5.
is attached by a fixing member 12 such as a screw, and a first magnet 14 is attached to a magnet attaching portion 13 at the outer end of the magnet attaching member 11. Here, the knob body 5 and the magnet mounting member 11 constitute a knob 10. In the figure, reference numeral 15 denotes a second valve means storage space provided in another part of the body 1, and the second valve means A is stored in this second valve means storage space 15 so as to be vertically movable. be. The second valve means A includes a case 16 with a side opening, a ball-shaped second valve 4, a second magnet 17 provided on the upper surface of the case 16, and a spring member 18.
It is composed of. In other words, the ball-shaped second
The valve 4 is loosely fitted into a case 16 whose side is open, and a second magnet 17 is attached to the upper surface of the case 16. A valve port 19 made of an elastic material provided in the middle of the gas passage 2 is opened and closed by a second valve 4 housed in a vertically movable case 16. In the illustrated embodiment, the lower surface of the first magnet 14 and the second magnet 1
The upper surface of the second magnet 17 is set to have a different polarity from the upper surface of the second magnet 17 (for example, if the lower surface of the first magnet 14 is an S pole, the upper surface of the second magnet 17 is an N pole).
When the first magnet 14 is not located above the second magnet 17, the case 16 is pushed downward by the spring force of the spring material 18, and the second valve 4 is It closes the valve port 19 (the second valve 4 comes into close contact with the valve port 19 due to gas pressure), and when the rotary valve 3 is fully open by turning the knob, the first magnet 14 is closed. is located above the second magnet 17, the second magnet 17 is attracted to the first magnet 14,
The case 16 moves upward against the spring force of the spring material 18, opening the valve port 19. That is, while the knob 10 is rotated from fully closed to just before fully opened, the rotary valve 3 gradually opens the middle of the gas passage 2 and the gas flows toward the second valve means storage space 15, but when the knob 10 is turned from fully closed to just before fully opened, If it is not in the fully open position, the first
The magnet 14 is not positioned above the second magnet 17, and as a result, gas flows from the plug 20 by operating the knob 10 only when the knob 10 is set to the fully open or nearly fully open position. There is.
Here, in the above embodiment, the first magnet 14 is the second magnet 1
When the first magnet 14 comes above the second magnet 17 and the two attract each other, the second valve means A opens the gas passage 2 halfway, but the first magnet 14 comes above the second magnet 17 and the two attract each other. The second valve means A may open part of the gas passage 2 when they repel each other. An emergency shutoff mechanism 21 is installed on the entrance side of the Kotoku main body 1. The emergency cutoff mechanism 21 includes a first operation body 22 and a second operation body 22.
It is composed of an operating body 23, a spring 26, and a valve storage body 25 in which a shutoff valve ball 24 is housed. The valve storage body 25 is housed in a large-diameter space 27 of the Kotuku main body 1, and the flange 28 is inserted into the main body part 2 of the Kotuku main body 1.
9 and the entrance part 30, and the large diameter cavity 2
7 is partitioned into a front chamber 31 and a rear chamber 32. The valve storage body 25 is provided with a horizontal outlet hole 33, a vertical hole 34 whose upper end communicates with the outlet hole 33, and an inclined hole 35 which communicates with the lower end of the vertical hole 34 and has an inlet at one end. A shutoff valve ball 24 is movably housed. In the figure, 36 is a stopper pin provided at the entrance of the valve storage body 25. The first operation body 22 is rotatably installed inside the rear chamber 32, and is supported by a spring 26.
The first operating body 22 is provided with an operating leg 37 which can be inserted into the outlet hole 33 of the valve storage body 25. There is. The second operating body 23 is the Kotoku main body 1
It is slidably fitted into the small diameter cavity 38 of the rotary valve 3, is elastically pushed toward the rotary valve 3 by the first operating body 22, and has one end pressed against the side surface of the rotary valve 3. It is. This emergency shutoff mechanism 21 is activated when there is no load or in large quantities, such as when the rubber hose connected to the plug 20 comes off, when gas is released by turning the knob 10 without attaching the rubber hose, or when gas flows out without igniting. When the gas flows (in this case, the rotary valve 3 is open and the second operating body 23 is pushed by the first operating body 22 and one end of it is fitted into the hole in the side wall of the rotary valve 3, (the operating leg 37 of the operating body 22 is retracted from the outlet hole 33), the shutoff valve ball 24 closes the outlet hole 33 when it receives gas pressure above a certain level. By the way, as mentioned above, when the shutoff ball 24 closes the outlet hole 33 in response to gas pressure above a certain level, the shutoff valve ball 24 rolls up the inclined hole 35 and rises, closing the vertical hole 3.
4, the shutoff valve ball 24 is prevented from rising instantaneously by coming into contact with the lower back wall of the shutoff valve ball 24, and the rise of the shutoff valve ball 24 is greatly delayed. If the overload condition or no-load condition is resolved in the meantime, the shutoff valve ball 24 is raised to prevent the outlet hole 33 from closing. On the other hand, if you want to reset, turn knob 1.
When turning 0 in the opposite direction to close, the rotary valve 3 rotates,
One end of the second operating body 23 is pushed out from the recess in the side wall of the rotary valve 3 and hits the side wall surface, and the second operating body 23
slides in the small diameter space 38 and pushes and rotates the first operating body 22 against the spring 26, and the operating leg 37
pushes the shutoff valve ball 24, the shutoff valve ball 24 leaves the outlet hole 33, passes through the vertical hole 34, falls into the inclined hole 35, and hits the stopper pin 36 at the end.
It stops when it hits. By the way, the emergency shutoff mechanism 21 operates only when gas pressure above a certain level is received and closes the gas passage 2, so if the gas hose is disconnected or the gas does not ignite when the rotary valve 3 is fully open or almost fully open, It will be activated if gas is released. Therefore, the emergency shutoff mechanism 21 does not operate when the rotary valve 3 is between fully closed and fully open (that is, in a half-open state). However, in the case of the present invention, the second valve means A opens the gas passage 2 only when the rotary valve 3 is fully open or almost fully open, so gas does not flow in the half-open state.
Therefore, when the rotary valve 3 is half open, gas does not flow, and even when it is fully open or almost fully open, if the gas hose is disconnected or gas is released without ignition, the emergency shutoff mechanism 21 closes. Gas will not flow under any circumstances other than normal usage conditions (i.e., other than when the ignition is fully opened or almost fully opened), making it extremely safe and especially useful for preventing gas suicides, etc. is effective.

In the present invention, as described above, it has a rotary valve that opens and closes the gas passage of the Kotsuk body in the middle, and a second valve means that opens and closes the other part of the gas passage of the Kotuku main body. The double valve opens and closes the gas passage in the main body of the Kotuku, which is very safe, and it also has a rotatable knob to operate the rotary valve. A moving first magnet and a second magnet provided on the second valve means are provided, and only when the rotary valve is fully opened or almost fully opened, the second valve means is moved by attraction or repulsion between the first magnet and the second magnet. Since it is set so that the gas passage is opened when the rotary valve is moved, the second valve means can also be opened and closed by operating the knob for opening and closing the rotary valve, making it easy to operate. Also, since the second valve means opens when the rotary valve is fully open or almost fully open, gas will not flow from the Kotoku body when the rotary valve is half open (in other words, the gas flow rate will be restricted and combustion will be unstable). It is safe because the gas flows only in the best fully open or almost fully open condition, without causing the flame to go out or producing raw gas by squeezing it too much.
In addition, by simply operating the rotary valve, the gas passage can be connected to the rotary valve and the second
Since the rotary valve is closed by the valve means, when the rotary valve is closed, the gas can be shut off twice by the rotary valve and the second valve means, increasing safety. Since the valve means can be opened and closed, there is no need for a mechanical mechanism for interlocking the rotary valve and the second valve means within the pot body, resulting in a simple structure.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the present invention, and FIG. 2 is a sectional view of the second valve means in an open state, in which 1 is the cock body, 2 is a gas passage, 3 is a rotary valve, and 10 is a sectional view of the present invention. The knob, 14 is a first magnet, 17 is a second magnet, and A is a second valve means.

Claims (1)

[Scope of utility model registration request] A rotary valve that opens and closes the gas passage in the middle of the Kotuku body, a second valve means that opens and closes the other part of the gas passage in the Kotuku body, and a rotatable knob for rotating the rotary valve; The knob includes a first magnet that is provided on the knob and rotates together with the knob, and a second magnet that is provided on the second valve means. A gas tank configured so that a second valve means is moved by suction or repulsion to open a gas passage.