JP3747097B2 - Fluid sealing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is installed in the inflow path between the inlet and the outlet of a storage tank that stores fluid such as water, oil or other liquid or gas such as gas, the fluid stored in the storage tank, The present invention relates to a fluid sealing device that prevents fluid in a storage tank from flowing out even when the inlet side is opened or negative pressure is generated due to an earthquake or the like, or the outlet side is opened.
[0002]
[Prior art]
Conventionally, this type of device is mainly installed in a water supply pipe to a water receiving tank or a pumping pipe that feeds water to an elevated water tank, and its range of use is limited, and its function stops reverse flow of water. This corresponds to so-called one-way traffic, in which water is allowed to pass if there is water pressure from the water receiving tank or water pressure to the pumping pipe.
[0003]
[Problems to be solved by the invention]
By the way, since the conventional valve device described above has only a backflow prevention function, for example, even when there is no supply of water to the elevated water tank by the pumping pipe, when the faucet is twisted or the water supply pipe side is damaged The drainage is performed through the faucet or from the water supply pipe until the water in the elevated water tank is exhausted.
[0004]
Moreover, when the pumping pipe side of the elevated water tank is damaged or when negative pressure is generated on the pumping pipe side, the water in the elevated water tank is drained through the pumping pipe as described above. It was a thing.
[0005]
For this reason, if a disaster such as an earthquake occurs and all the water in the elevated water tank is drained, the water cannot be used even temporarily, so it is absolutely impossible to secure water until water is supplied by the water truck. Disappear. Also, during such a disaster, the water truck is often unable to move due to the collapse of the house, and the water supply cannot be envisaged. Therefore, each local government is required to install an emergency water storage tank, but the current situation is that sufficient supply cannot be provided to all residents due to securing the installation location and soaring construction costs.
[0006]
The present invention is intended to solve the above-described problems. The purpose of the present invention is to prevent the pipe in the storage tank from being damaged even in the event of a disaster such as an earthquake. It is an object of the present invention to provide a fluid sealing device capable of ensuring the fluid in the storage tank in an emergency without causing the fluid to flow out.
[0007]
[Means for solving the problems]
In order to achieve the above-described object, the present invention is a fluid sealing device that is provided in a fluid inflow path of a storage tank that stores fluid and prevents the fluid from leaking out of the storage tank in the event of a disaster or the like. A first chamber having an open / close valve that opens and closes an inflow path by the pressure of the fluid; a second chamber having an internal cavity located adjacent to the first chamber and through which the fluid flows; and the first chamber, A storage tank sealed chamber comprising a pipe connected to the second chamber and supplying the fluid to the storage tank or discharging from the storage tank is provided on either the upper side or the lower side in the storage tank. A fluid sealing device is provided.
[0008]
Further, the open / close valve includes a sub valve that is displaced by pressure of fluid flowing through the inflow passage, and a main valve that opens the fluid passage by displacement of the sub valve.
[0009]
The sub valve may be linearly operated by the pressure of the fluid flowing through the inflow path, and the main valve may open the inflow path by the linear operating force. The main valve may be rotated about one point by the pressure of the fluid flowing through the inflow passage, and the main valve may open the inflow passage by this rotational force.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, a first embodiment of a fluid sealing device according to the present invention will be described with reference to FIGS. In addition, this embodiment is a case where it applies to the poly tank for storing it, circulating water at home.
Reference numeral 1 denotes a water tank 1 which is a poly tank, and a water storage tank comprising a first chamber 21 which is a storage tank sealed chamber in which water circulates and a second chamber 22 having an inner cavity just by circulating water. A sealed box 2 is attached.
[0011]
An upper pipe 211 connected to a faucet that uses water is provided on the upper surface of the first chamber 21, and an upper pipe 221 connected to the water tap side is provided on the upper surface of the second chamber 22. Lower pipes 212 and 222 connected to the water tank are provided on the lower surfaces of the chamber 21 and the second chamber 22.
[0012]
In the first chamber 21, there is formed an inflow chamber 213 that communicates with the lower pipe 212 and has a side surface that opens up the sub-valve 23 that constitutes the opening / closing valve. Above the inflow chamber 213, a blocking wall is formed. An outflow chamber 215 communicating with the upper pipe 211 via 214 is formed.
[0013]
A main valve chamber 216 that accommodates a cylindrical main valve 24 that constitutes an open / close valve is formed on the upper portion of the blocking wall 214. The main valve 24 normally contacts the blocking wall 214 under its own weight, and the inflow chamber 213. And the outflow chamber 215 are blocked.
[0014]
However, when water flows into the inflow chamber 213, the sub valve 23 is pushed up by the water force, and the main valve 24 is pushed up at the tip, so that water flows between the inflow chamber 213 and the outflow chamber 215, and at this time The main valve 24 is further pushed up by the water force, and the main valve 24 is far away from the blocking wall 214. Therefore, the valve is opened, and water flows into the outflow chamber 215 from the inflow chamber 213.
[0015]
When the main valve 24 is in contact with the blocking wall 214, the main valve 24 and the opening are in contact with each other between the opening constituting the main valve chamber 216 and the main valve 24. Water is prevented from flowing into the chamber 216.
[0016]
A gap 217 that does not communicate with the outflow chamber 215 is formed in the upper part of the main valve chamber 216, and this gap 217 continues to the gap 219 on the side surface of the main valve 24 through the side chamber 218. When the main valve 24 is opened as described above, a gap is formed between the main valve 24 and the main valve chamber 216, and water enters the main valve chamber 216 from here.
[0017]
When the main valve 24 is pushed up, the water that has entered the main valve chamber 216 has a gap 217 and a side chamber due to negative pressure caused by an increase in the flow velocity of water passing through the gap generated between the main valve 24 and the blocking wall 214. 218 and the gap 219, the main valve 24 is not lifted, and the water in the main valve chamber 216 circulates, so that the water stored in the main valve chamber 216 is spoiled. Never do.
[0018]
In the storage and closing device in this embodiment, when the faucet connected to the outflow chamber 215 is opened, the inside of the outflow chamber 215 becomes negative pressure, and the water in the water tank 1 flows into the inflow chamber 213, and the subsurface is driven by that momentum. The valve 23 is pushed up.
[0019]
Then, since the tip of the pushed-up sub valve 23 pushes up the main valve 24, the block between the main valve 24 and the blocking wall 214 is opened, and the water in the water tank 1 flows into the inflow chamber 213 of the first chamber 21, It is supplied to the faucet through the outflow chamber 215. On the other hand, water is supplied into the water tank 1 from the upper pipe 221 connected to the water tap side through the second chamber 22 via the water tap.
[0020]
Thus, since the fluid sealing device installed in the water supply channel of this embodiment is newly replenished with tap water in the water tank 1 as drainage from the faucet, the water tank 1 is always kept fresh. Kept.
[0021]
In addition, when a disaster such as an earthquake occurs and water is not supplied from the main tap side of the water supply, or when the main plug side is opened, no water flows in the inflow chamber 213. 24 is not pushed up, and the main valve 24 is kept in contact with the blocking wall 214, so that the water in the water tank 1 is not drained.
[0022]
Furthermore, even when a negative pressure is generated on the main plug side, the main valve 24 does not move away from the blocking wall 214, so that water does not flow, water is prevented from flowing out, and the water tank 1 is kept full. Therefore, emergency water in the water tank 1 can be secured even in such a disaster. Even when the water tank 1 is inclined, the water in the water tank 1 is not drained as long as the inclination is within a range where the main valve 24 contacts the blocking wall 214.
[0023]
Although the first embodiment is installed on the upper part of the water tank 1, FIG. 3 is installed on the lower inner surface of the water tank 1 such as an elevated water tank. In this case, the lower pipe 212 of the first chamber 21 is connected to the water tap side, the lower pipe 222 of the second chamber 22 is connected to the faucet side, and the upper pipes 211 and 221 are opened in the water tank 1.
[0024]
Also in this embodiment, when the faucet is normally opened, the auxiliary valve 23 rises due to the inflow of water from the main plug, pushes up the main valve 24, opens the closed circuit, and drains the water in the water tank 1 to the faucet side. To do. The main valve 24 is also pushed up when the faucet is opened when the water supply from the main plug stops during a disaster such as an earthquake, and when the main plug side is opened, or when negative pressure is generated on the main plug side. Therefore, there is no flow of water to the faucet or water to the main plug. In this state, when water is supplied to the faucet, it can be performed by supplying outside air into the water tank 1.
[0025]
In the above-described embodiment, the main valve 24 can be opened by moving the sub valve 23 up and down. However, as shown in FIGS. The sub-valve 25 may be configured to open and close by circular movement about the fulcrum, thereby pushing up the main valve 24. Further, the main valve 24 can be pushed up by the flow of water to open the main valve 24, even if it is a simple sphere as shown in FIG.
[0026]
In addition, although the above-mentioned embodiment demonstrated the case where it installed in a water tank, if it installs also in the storage tank which put gas like other liquid tank gas tanks, a propane gas tank, etc., it will be the same operation as described above. Thus, leakage of liquid and gas in the storage tank can be prevented.
[0027]
【The invention's effect】
As described above, the present invention is attached to the opening or inside of the storage tank, and when the supply pipe to the storage tank or the outflow pipe from the storage tank is damaged, or even if negative pressure occurs in the supply pipe In addition, the fluid inside the storage tank does not leak, and even if a slight inclination occurs during a disaster such as an earthquake, there is no outflow of liquid. This has the effect of preventing secondary disasters caused by gas leakage.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a fluid closing device according to the present invention.
FIG. 2 is a sectional view showing a state in which the fluid closing device is attached to a water tank.
FIG. 3 is a cross-sectional view showing another embodiment of the above.
4 is a front sectional view showing another embodiment of the auxiliary valve in FIG. 1. FIG.
FIG. 5 is a side sectional view of the above.
FIG. 6 is a cross-sectional view when a secondary valve is not used.
[Explanation of symbols]
1 Water tank (storage tank)
2 Storage tank sealed box 21 First chamber 22 Second chamber 23 Sub valve 24 Main valve

Claims (4)

A fluid sealing device that is provided in a fluid inflow path of a storage tank that stores fluid and prevents the fluid from leaking out of the storage tank during a disaster or the like,
A first chamber having an open / close valve that opens and closes an inflow path by the pressure of the fluid; a second chamber that is located adjacent to the first chamber and through which the fluid only circulates; the first chamber and the first chamber; A storage tank sealed chamber comprising a pipe connected to a second chamber and supplying the fluid to the storage tank or discharging from the storage tank is provided on either the upper side or the lower side in the storage tank. A fluid sealing device.   2. The fluid sealing device according to claim 1, wherein the on-off valve is constituted by a sub-valve that is displaced by the pressure of fluid flowing through the inflow passage, and a main valve that opens the fluid passage by the displacement of the sub-valve. .   3. The fluid sealing device according to claim 2, wherein the sub valve operates linearly by the pressure of fluid flowing through the inflow path, and the main valve opens the inflow path by the linear operating force.   3. The fluid sealing device according to claim 2, wherein the sub-valve is rotated around one point by the pressure of the fluid flowing through the inflow passage, and the main valve opens the inflow passage by this rotational force.

Images