JPH0112063Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] This invention relates to a coupling device for opening and closing two fluids, and more specifically, it is capable of simultaneously discharging fluid from at least two or more fluid containers through a single discharge port. This invention relates to a two-fluid opening/closing coupling device.

[Prior art]

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.

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, the above-mentioned outlet union nut or valve of the fluid container is often used, 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 invention]

This invention was devised by focusing on the conventional problems, and its purpose is to simultaneously discharge fluid from at least two or more fluid containers through a single discharge port. Moreover, the present invention provides a two-fluid opening/closing coupling device that is excellent in operability, lightweight, compact, has extremely low fluid loss, and has extremely high reliability.

[Structure of the idea]

In order to achieve the above-mentioned object, this invention provides a fluid inlet at one end side and a side wall of the coupling body formed in a hollow cylindrical shape, and a fluid outlet at the other end. A plurality of storage chambers are formed inside the main body and communicate with each other via a flow path, and a fluid inlet provided in the coupling main body is connected to the flow path, and a plurality of storage chambers are formed inside the plurality of storage chambers through a sealing material. A multi-stage open/close valve that is always biased in the closed direction is slidably installed inside.
The gist of the present invention is that a hollow cylindrical opening/closing coupling having an internal opening/closing valve that comes into contact with the multi-stage opening/closing valve is detachably provided at the outlet formed at the other end of the coupling main body. .

[Example of idea]

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

Fig. 1 is a schematic diagram of the two-fluid opening/closing coupling main body 1 according to this invention attached to the container main body Q;
The figure is a sectional view of the coupling body 1, and FIG. 3 shows the opening/closing coupling 2 detachably attached to the coupling body 1.

The valve casing 3 of the two-fluid opening/closing coupling main body 1 has a hollow cylindrical body 5 having a substantially U-shaped cross section and a flange 4 at the lower part.
A first adapter 7 is fitted onto the upper end of the body 5 via a sealing material 6 such as an O-ring, and a sealing material 8 such as an O-ring is fitted within the flange 4 formed at the bottom of the body 5. A hollow cylindrical second adapter 9 is attached through the adapter.

In the upper part of the valve casing 3, a first accommodation chamber 10 is formed by the body 5, which is formed into a substantially U-shaped cross section, and the first adapter 7, and an inflow port 7a at the upper end opening of the first adapter 7 is formed. A fluid supply pipe 11 is connected thereto.

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 2 on its 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
A first opening/closing valve 16 having a concave cross-sectional shape and a second opening/closing valve 17 having a tapered outer peripheral surface and a concave cross-sectional shape are slidably installed inside the storage chamber 13. 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 gap H between them. Tsuba 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.
A plurality of 2 are formed. 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 bottom of the body 4 is the self-closing valve 1 according to this invention.
This is possible when it is attached directly to the tank body (not shown) or via adhesive, welding, or the like.

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 provided at the tip of the sleeve tube valve 31 that is slidably inserted into the hollow interior of the adapter 32 and at the bottom of the inner wall of the adapter 32, which always biases the sleeve tube valve 31 in the protruding direction. Interior is
Further, a sleeve 30 is provided between the rear end of the adapter 32 and the rear end outer peripheral surface of the sleeve tube valve 31.
A ball 37 and a sealing material 38 such as an O-ring are interposed to be engaged with a stepped portion 30a formed on the inner wall surface.

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.

Next, the effect will be explained.

First, the coupling body 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. 4, the on-off coupling 2 is fitted onto the outlet 9a of the second adapter 9.
At this time, the sleeve tube valve 31 slides inside the sleeve 30 and the spring 36
The second opening/closing valve 39 protrudes from the end face of the sleeve tube valve 31 and pushes up the second opening/closing valve 17 at the same time.

As shown in FIG. 4, the second opening/closing valve 17 resists the elastic force of the spring 24 to
When pushed upward in the gap 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 flow 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 on-off valve 17 is pushed upward within the gap H of the valve guide 20, the second on-off valve 17
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 with the fluid W1 that has flowed in from the outlet 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 the fluid in the fluid container A is transferred to the coupling body 1.
It is also possible for the fluid to flow into the fluid container B via the fluid container B.

[Effect of idea]

In this invention, a fluid inlet is provided at one end side and a side wall of the coupling body formed into a hollow cylindrical shape as described above, and a fluid outlet is provided at the other end of the coupling body. A plurality of storage chambers are formed therein that communicate with each other via a flow path, and a fluid inlet provided in the coupling body is connected to the flow path, and inside the plurality of storage chambers,
A multi-stage on-off valve that is normally biased in the valve-closing direction via a sealing material is slidably installed inside, and a discharge port formed at the other end of the coupling body is connected to the multi-stage on-off valve. Since a hollow cylindrical opening/closing coupling ring with a connecting opening/closing valve is provided in a removable manner, fluid can be simultaneously discharged from at least two or more fluid containers through a single discharge port, and it has excellent operability. It is lightweight and compact, has extremely low fluid loss, and has extremely high reliability.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of the two-fluid opening/closing coupling body according to this invention attached to the container body, Figure 2 is a cross-sectional view of the coupling body, and Figure 3 is a diagram of the opening/closing coupling body detachably attached to the coupling body. 4 is a sectional view showing a state in which the opening/closing coupling is attached to the coupling body. DESCRIPTION OF SYMBOLS 1... Coupling main body, 2... Coupling for opening and closing, 7a, 15... Inflow port, 9a... Outlet, 10... First storage chamber, 13... Second storage chamber,
14...Flow path, 16...First opening/closing valve, 17
...Second opening/closing valve, 23...Sealing material, 39...
…Opening/closing valve, W1, W2…Fluid.

Claims (1)

[Scope of utility model registration request] A fluid inlet is provided at one end side and a side wall of the coupling body formed in a hollow cylindrical shape, and a fluid outlet is provided at the other end, and a fluid is provided inside the coupling body through a flow path. A multi-stage structure is formed in which a plurality of communicating chambers are formed, a fluid inlet provided in the coupling body is connected to a flow path, and the plurality of chambers are always biased in the valve-closing direction via a sealing material. A hollow cylindrical opening/closing coupling, which has a sliding open/closing valve therein, is installed and detached from a discharge port formed on the other end of the coupling body, and has an opening/closing valve that comes into contact with the multistage opening/closing valve. A two-fluid opening/closing coupling device characterized by being freely installed.