JPH0350160B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a self-closing valve device,
More specifically, the present invention relates to a self-closing valve device capable of simultaneously discharging fluid from at least two fluid containers through a single discharge port.

[Conventional technology]

Conventionally, the outlet of a fluid container (such as a fuel tank) used in mechanical equipment, etc. is equipped with a union nut or valve in order to drain the fluid when replacing the fluid in the container or during maintenance of the mechanical equipment. It is common for there to be.

[Problem that the invention seeks to solve]

However, in the case of the above-mentioned union nut type, there are problems in that the operator's hand becomes dirty, operation takes time, and tools such as spanners must be used for operation.

Furthermore, when an on-off valve or the like is used, there are problems in that it is large in size and heavy, and requires a great deal of time to operate.

Furthermore, if the fluid container has a single structure, a union nut or valve is often used at the outlet of the fluid container as described above, even if some operability is ignored from the viewpoint of cost. However, as shown in Fig. 1, when the fluid containers A and B are independent from each other, but the fluid W is to be extracted from the containers through a single outlet, conventional union nuts, valves X, etc. cannot handle this problem. There was a problem. Furthermore, it is not suitable for cases where conditions such as excellent operability, light weight and compactness, minimal fluid loss, and high reliability are required.

[Purpose of the invention]

This invention was devised by focusing on the problems of the prior art, and its purpose is to simultaneously discharge liquid from at least two fluid containers through a single discharge port. In addition, the present invention provides a self-closing valve device that has excellent operability, is lightweight, compact, has extremely low fluid loss, and has extremely high reliability.

[Problem that the invention seeks to solve]

In order to achieve the above object, the present invention includes a valve casing equipped with a fluid supply port and a fluid discharge port.
A first storage chamber and a second storage chamber are formed that communicate with each other via a flow path, and the first storage chamber and the second storage chamber include:
A first opening/closing valve and a second opening/closing valve, which are always biased in the valve closing direction via a spring, are slidably installed inside the valve, and a guide rod provided on the bottom surface of the first opening/closing valve and an upper surface of the second opening/closing valve are provided. A guide rod provided in the flow passage is disposed so as to be able to come into contact with the guide rod through the valve guide, and a predetermined gap is formed between the two guide rods when the valve is closed. The gist is that a liquid inlet is provided, and a sealing material is interposed on the contact surface between the opening/closing valve located on the supply port side and the storage chamber.

[Embodiments of the invention]

Embodiments of the present invention will be described below based on the accompanying drawings.

FIG. 1 is a schematic diagram of a self-closing valve device 1 according to the present invention attached to a container body Q, FIG. 2 is a sectional view of the self-closing valve device 1, and FIG. 3 is a diagram showing how the self-closing valve device 1 is attached and removed This shows an opening/closing coupling 2 that can be freely attached.

The valve casing 3 of the self-closing valve device 1 includes a hollow cylindrical body 5 having a substantially U-shaped cross section and a flange 4 at the bottom, and a sealing material such as an O-ring at the upper end of the body 5. 6, and a hollow cylindrical second adapter 9 fitted into the flange portion 4 formed at the bottom of the body 5 via a sealing material 8 such as an O-ring. It consists of In the upper part of the valve casing 3, a first storage chamber 10 is formed by the body 5 having a substantially U-shaped cross section and a first adapter 7, and a supply port 7a at the upper end opening of the first adapter 7 is formed. Fluid supply pipe 11
is connected.

The second adapter 9 attached to the lower opening of the body 5 has a tapered tip, and a convex portion 12 that can be freely engaged with and detached from the opening/closing coupling ring 2 is formed on the outer peripheral surface.

The second storage chamber 13 in the second adapter 9 is
The communication passage 14 communicates with a first storage chamber 10 defined by the body 5 and the first adapter 7, and an inlet 15 for the fluid W1 is formed in the side wall of the communication passage 14.

The first storage chamber 10 and the second storage chamber formed in multiple stages
Inside the accommodation chamber 13, a first opening/closing valve 16 having a generally concave cross section and a second opening/closing valve 17 having a generally concave cross section and a tapered outer peripheral surface are slidably installed. There is.

The first on-off valve 16 and the second on-off valve 17
The guide rods 18 and 19 are slidably inserted into the through hole 20a of the valve guide 20 fitted to the upper end of the second adapter 9 with a predetermined distance 〓H apart. The flange part 20b
A plurality of flow passages 20c are formed therein.

The first opening/closing valve 16 is connected to the first adapter 7
is always biased in the valve closing direction by a spring 21 interposed between and the back surface of the first opening/closing valve 16;
A fluid W flow passage 2 is provided on the side wall of the first on-off valve 16.
2 is formed in plurality. Also, the first opening/closing valve 1
A sealing material 23 such as an O-ring is provided on the bottom wall surface of the body 5 that comes into contact with the seat surface 16a (bottom surface) of the body 5, and is configured to completely seal when the first on-off valve 16 is closed.

Further, the second on-off valve 17 is normally biased in the valve-closing direction by a spring 24 interposed between the back surface of the second on-off valve 17 and the valve guide 20. A sealing material 25 such as an O-ring is provided.

The flange 4 integrally formed at the lower part of the body 4 is the self-closing valve 1 according to the present invention.
This is possible when it is attached directly to the tank body (not shown) or via adhesive, welding, or the like.

As described above, by providing the gap H between the first on-off valve 16 and the second on-off valve 17, the first on-off valve 16 and the second on-off valve 17 can be sealed independently. , which improves the reliability of valve opening and closing and also provides sequential valve opening and closing.

The opening/closing coupling ring 2, which is removably attached to the discharge port 9a opened at the tip of the second adapter 9, has a stepped shape inside both ends of a sleeve 30 formed in a hollow cylindrical shape, as shown in FIG. A hollow cylindrical sleeve tube valve 31 and a hollow cylindrical adapter 32 that slidably fit the sleeve tube valve 31 are installed inside.

The sleeve tube valve 31 is rotatably fitted to one end of the sleeve 30 via a ball 33, and the adapter 32 is slidably fitted to the other end of the sleeve 30 via a retainer 34 and a spring 35. ing. A spring 36 is installed at the tip of the sleeve tube valve 31 slidably inserted into the hollow interior of the adapter 32 and at the bottom of the inner wall of the adapter 32 to always bias the sleeve tube valve 31 in the protruding direction. In addition, between the rear end of the adapter 32 and the rear end outer peripheral surface of the sleeve tube valve 31, there is a sealing material such as a ball 37 and an O-ring that engages with a step 30a formed on the inner wall surface of the sleeve 30. 38 is interposed.

Further, a hollow cylindrical opening/closing valve 39 that contacts the second opening/closing valve 17 is installed in the hollow interior of the adapter 32 , and the outer peripheral surface of the tip of this opening/closing valve 39 and the inner wall sliding surface of the sleeve tube valve 31 are connected. A sealing material 40 is interposed between them. Note that 41 is Patsukin.

The following effects will be explained.

First, the self-closing valve device 1 is attached to the container body Q as shown in FIG. Then, as shown in FIG. 2, the first and second on-off valves 16 and 17 are in the closed state, and as shown in FIG.
The opening/closing coupling ring 2 is fitted onto the discharge port 9a. At this time, the sleeve tube valve 31 enters the hollow interior of the adapter 32 while sliding within the sleeve 30 and against the elasticity of the spring 36, and at the same time, the opening/closing valve 39 protrudes from the end surface of the sleeve tube valve 31. to push up the second on-off valve 17.

As shown in FIG. 4, the second on-off valve 17 moves against the elasticity of the spring 24 to prevent
When the inside of the second adapter 9 is pushed upward during the interval 〓H, the lower part of the second storage chamber 13 in the second adapter 9 opens. Then, the fluid W1 flows from the outlet 15 formed in the side wall of the communication passage 14 in the direction of the arrow, passes through the plurality of flow passages 20C of the valve guide 20, and flows into the second storage chamber 13 in the second adapter 9. Further, it flows out from inside this second storage chamber 13 toward the discharge port 9a of the lower opening.

Furthermore, when the second opening/closing valve 17 is pushed upward between the valve guides 20,
The tip of the guide rod 19 of the on-off valve 17 is the first
The guide rod 18 of the opening/closing valve 16 comes into contact with the first opening/closing valve 16, and the first opening/closing valve 16 is pushed upward against the elastic force of the spring 21. As a result, the seat surface 16a (bottom surface) of the first opening/closing valve 16 and the bottom wall surface of the body 4, which abuts through the sealing material 23, are opened.

As a result, the fluid W flowing in from the direction of the arrow is directed to the flow path 22 formed on the side wall of the first on-off valve 16.
The fluid enters the communication passage 14 through the flow passage 14, and further joins the fluid W1 flowing from the inflow port 15, passes through the plurality of flow passages 20C of the valve guide 20, and enters the second storage chamber 13 in the second adapter 9. It flows in and further flows out from inside this second storage chamber 13 toward the lower discharge port 9a.

In addition, as for the operation when closing the valve, the second opening/closing valve 1
When the opening/closing coupling ring 2 is removed from 7, the second
As shown in the figure, the first on-off valve 16 and the second on-off valve 17 are automatically closed by the elastic force of springs 21 and 24.

In this state, the first on-off valve 16, the second on-off valve 17, the first accommodation chamber 10, the second accommodation chamber 1,
3 is completely sealed via the sealing materials 23 and 25, so that the fluid W and the fluid W1 will never leak and mix.

Note that it is also possible to cause the fluid in the fluid container A to flow into the fluid container B via the self-closing valve device 1, and the opening/closing coupling 2 is not limited to the above configuration, and the first opening/closing valve 16 and second
Any device that opens the on-off valve 17 by pushing it up may be sufficient.

〔Effect of the invention〕

This invention forms a first storage chamber and a second storage chamber that communicate with each other via a flow path in a valve casing provided with a fluid supply port and a fluid discharge port as described above, and the first storage chamber A second on-off valve and a second on-off valve, which are always biased in the valve-closing direction via a spring, are slidably housed in the second storage chamber, and a guide rod is provided at the bottom of the first on-off valve. and a guide rod provided on the upper surface of the second opening/closing valve are disposed so as to be able to come into contact with each other via the valve guide, and a predetermined gap is formed between the two guide rods when the valve is closed. , a fluid inlet is provided in the middle of the flow path, and a sealing material is interposed on the abutment surface between the on-off valve located on the supply port side and the storage chamber, so that one fluid can be removed from at least two or more fluid containers. Fluid can be discharged simultaneously and reliably through two discharge ports, and the operability of opening and closing the valve is excellent, and the structure can be lightweight and compact, and reliability can be significantly improved.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of a self-closing valve device according to the present invention attached to a container body, Fig. 2 is a sectional view of the self-closing valve device, and Fig. 3 is a schematic diagram of the self-closing valve device according to the present invention attached to the container body. FIG. 4 is a cross-sectional view showing a state in which the opening/closing coupling is attached to a self-closing valve device. 1...Self-closing type vibrator device, 2...Opening/closing coupling, 3...Valve casing, 7a...
Supply port, 9a... Discharge port, 10... First storage chamber,
13...Second storage room, 14...Distribution path, 15...
Inflow port, 16...first opening/closing valve, 17...second
Opening/closing valve, 18, 19...Guide rod, 20
... Valve guide, 21 ... Spring, 23 ...
...Sealing material, W1, W2...Fluid.

Claims (1)

[Claims] 1 A first storage chamber and a second storage chamber that communicate with each other via a flow path are formed in a valve casing equipped with a liquid supply port and a liquid discharge port, and the first storage chamber and the second storage chamber communicate with each other via a flow path.
A first opening/closing valve and a second opening/closing valve, which are normally biased in the valve closing direction via a spring, are slidably housed in the accommodation chamber, and a guide rod provided on the bottom surface of the first opening/closing valve; A guide rod provided on the upper surface of the opening/closing valve 2 is disposed so as to be able to come into contact with it via the valve guide, and a predetermined gap is formed between both guide rods when the valve is closed. A self-closing valve device characterized in that a liquid inlet is provided in the middle of the passage, and a sealing material is interposed on the contact surface between the opening/closing valve located on the supply port side and the storage chamber.