JPH0322626Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fluid connector used in iron-making machinery, industrial machinery, industrial vehicles, etc.

[Prior art] This type of prior art is shown in Utility Application No. 1981-81957, which was previously filed by the present applicant, and its configuration is as shown in Figs. 3 and 4. There is.

This means that the first body 50 and the second body 60 are separated as shown in FIG.
A valve seat 70 provided on the outer periphery of each main body is pressed by a spring 71, and a check valve 5 provided inside each main body is pressed by a spring 71.
1 and 61 are valve holes 53 and 6 by springs 52 and 62.
The small valve 90 of the rod-shaped portion 80 that extends from the tip of the check valve 51 is seated in the small valve hole 72 of the valve seat 70. When the second main body 60 approaches the first main body 50 from this separated state, the main body 60 pushes the valve seat 70 against the spring 7.
1, the small valve 90 is removed from the small valve hole 72, and then the check valve 61 comes into contact with the small valve 90 and pushes the check valve 51 open via the rod-shaped part 80,
As shown in FIG. 4, the check valves 5 are pressed against each other.
1,61 can be pushed open.

[Problem that the invention attempts to solve]

In this fluid connector, in the connected state shown in FIG. 4, pressure fluid flowing from the port 64 of the second body passes through the fluid passage hole 65 in the body 60 and the inner hole 66 of the check valve 61 as shown by the arrow. However, when flowing from the check valve 61 toward the first body 50, it is diverted to a 90° direction at a passage hole 67 provided perpendicular to the axis.
Further, the flow is turned 90 degrees when it hits the inner wall of the second body, flows along the small valve 90 and the rod-shaped part 80, enters the first body 50 through the small valve hole 72 of the valve seat 70, and enters the check valve 51. through the passage hole 57, the inner hole 56 of the check valve 51, the fluid passage hole 55 in the body 50, and the port 54 of the first body 50.
flows to

In other words, when fluid passes through the first and second bodies 50 and 60, the direction of the flow is changed by 4 degrees at the check valves 51 and 61, which causes a problem in that the pressure drop between both ports 54 and 64 is extremely large. It was hot.

The cause of this problem is that the check valve has a valve body structure that has a passage hole from the inside of the check valve to the outside, or from the outside to the inside, in a direction perpendicular to the axial direction of the check valve, in order to allow fluid to flow. It is.

[Means for solving problems]

The present invention was developed in view of the above-mentioned problems, and the structure of the valve bodies of check valves and small valves is designed to have a structure with little pressure loss, thereby minimizing changes in the flow of fluid in the axial direction of the connector. The technical challenge is to do so.

The technical means for achieving this problem is that, in the conventional fluid connector, each of the check valves is fitted with a guide ring that is slidably inserted into the main body, and that is fixed to the guide ring via the valve shaft. A fluid passage hole is formed in the axial direction of the guide ring, and the outer shape of the valve body is streamlined so that it can be seated and removed from each valve hole of the main body, and the small valve The outer shape of the check valve is a streamlined shape that is continuous with the streamlined shape of the check valve when it comes into contact with the check valve.

[Effect]

According to this technical means, when connecting the connector,
Pressure fluid flowing in from the port of the second body flows along the axial direction of the body through the valve shaft of the check valve and the fluid hole of the guide ring, and flows almost linearly along the streamlined shape of the valve body. flows to Then, it flows along the streamline shape of the small valve that is continuous with this, flows along the streamline shape of the valve body of the check valve of the first body, and flows from the fluid passage hole of the guide ring to the port of the first body. . Therefore, the pressure fluid can flow approximately linearly within the first and second bodies, reducing pressure loss between both ports.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 shows a partially vertical side view of the fluid connector of the present invention, in which 1 is a first main body, 2 is a second main body, 4,
5 is a check valve, 6 is a small valve, and 7 is a valve seat.

The first main body 1 has a pressing plate 1 on the front side of the fixed face plate 10.
It is inserted from the rear of a substantially cylindrical outer cylinder 3 fixed by a pipe cover 13, and its rear end is fixed by a piping cover 13, and its tip is formed into a valve hole 8 having an inclined part. A check valve 4 is housed therein. In addition,
The outer cylinder 3 has a connecting port 15 having a smaller diameter than the inner hole and a larger diameter than the outer diameter of the second main body 2 at its distal end, and is provided with a stepped portion 16 .

The second main body 2 has a substantially cylindrical shape, and has a distal end formed into a valve hole 9 having an inclined portion, and a rear end formed into a movable face plate 1.
It is fixed to the front surface of 1 via a pressing plate 14, and houses a check valve 5 inside.

The check valve 4 is composed of a cylindrical guide ring 17 that is slidably fitted into the inner hole of the first main body 2, and a valve body 19 that is fixed to the guide ring 17 via a valve shaft 18. , is pressed against the valve hole 8 by a spring 21 disposed between the guide ring 17 and a spring receiver 20 at the rear end. This valve body 19
is adapted to be seated slightly protruding from the valve hole 8, and its outer shape is formed into a substantially streamlined shape extending rearward from the protrusion. Further, the guide ring 17 is provided with a fluid passage hole 22 along the axial direction of the valve shaft 18, and a piping connection port 22 of the cover 13 is formed.
and the valve hole 8, so that the valve body 1 communicates with the valve hole 8.
9 is fitted with an O-ring 24 that prevents fluid from leaking from the valve hole 8.

Like the check valve 4, the check valve 5 includes a cylindrical guide ring 25 that is slidably fitted into the inner hole of the second main body 2, and is fixed to the guide ring 25 via a valve shaft 26. The valve body 27 is pressed into the valve hole 9 by a spring 29 provided between the valve body 27 and a spring receiver 28 at the rear end. The tip of the valve body 27 is formed into a flat surface, which is substantially the same as the end surface of the second body 2, and an O-ring 30 is attached to the outer periphery of the valve body 27, and a streamlined shape is formed on the back side of the valve body 27. There is. Further, fluid passage holes 31 and 32 are formed in the guide ring 25 and the spring receiver 28 along the axial direction of the valve shaft 26 so that the piping connection port 33 of the movable face plate 11 and the valve hole 9 communicate with each other. It's summery.

The small valve 6 is fixed to the tip of a rod-shaped portion 34 connected to the tip of the check valve 4, and an O-ring 35 is attached to the outer periphery of the small valve 6.
The tip surface is formed into a flat surface that comes into contact with the end surface of the check valve 5, and has a substantially streamlined shape that is continuous with the streamlined shape of the check valve 5 when it comes into contact with the check valve 5. The valve seat 7 formed on the back side of the valve seat 7 is slidably fitted into the inner hole of the outer cylinder 3, and has a spring receiver 36 which is slidably fitted into the rod-shaped portion 34. It is pressed against the stepped portion 16 of the outer cylinder 3 by a spring 37 disposed between the receiver 36 and the first main body 1 . A fluid passage hole 38 is formed in the spring receiver 36 along the axial direction of the rod-shaped portion 34 . Further, a valve hole 39 having an inclined portion is formed in the end face on the second main body side, and the small valve 6 is fitted into the valve hole 39 from the outside and is seated therein. In addition, 40 is an annular seal shape, and when the second main body 2 comes into contact with the valve seat 7, it is crimped and seals the valve hole 9.
The sealing state between the second main body 2 and the valve seat 7 is determined by the cross-sectional area of the valve seat 7 minus the cross-sectional area of the annular sealing material 40. It is maintained by the pressing force caused by the fluid pressure acting on it.

The fluid connector configured in this manner can be changed from the separated state shown in FIG. 1 to the connected state shown in FIG. 2 by moving the movable face plate 11 a predetermined distance toward the fixed face plate 10. That is, when the second main body 2 is fitted into the connection port 15 of the outer cylinder 3, the end surface of the second main body 2 comes into contact with the end surface of the valve seat 7, and as it moves further, the end surface of the check valve 5 and the small valve come into contact with each other. The end faces of 6 are in contact with each other,
The valve seat 7 is moved backward in the outer cylinder 3 against the spring 37, and the small valve 6 is unseated from the valve hole 39, and the check valves 4 and 5 are pushed against each other via the rod-shaped portion 34, and the valve seat 7 is moved backward in the outer cylinder 3. The valve hole 8 of the first body and the valve hole 9 of the second body are separated, and the pipe connection ports 23 and 33 are in a connected state. In this connected state, the pressure fluid flowing in from the connection port 33 flows along the direction of the arrow shown in FIG.
The fluid flows linearly through the fluid passage hole 31 of the guide ring 25 and flows along the streamlined shape of the valve body 17 of the check valve. Then, while flowing along the streamline shape of the small valve 6, it passes through the valve hole 39 of the valve seat 7, and passes through the spring receiver 36.
The fluid flows along the fluid passage hole 38 of the guide ring 17 and the rod-like part 34 of the small valve 6, and flows along the streamlined valve body 19 of the check valve 4, while the fluid passage hole 22 of the guide ring 17 flows.
It flows out to the connection port 23 from there. Therefore, the pressure fluid flows through the valve shaft of the check valve 5, the rod-shaped portion of the small valve 6, and the check valve 4.
Flows in a smooth streamline along the axial direction of the valve stem.

[Effect of idea]

As is clear from the above description, according to the fluid connector of the present invention, the shape structure of the check valve and small valve is streamlined so as to cause fluid flow along the axial direction of each valve body. Therefore, the fluid does not collide with the inner walls or the like at all as in the conventional case, and the pressure loss can be significantly reduced.

[Brief explanation of drawings]

Fig. 1 is a partially vertical side view showing an embodiment of the fluid connector of the present invention, Fig. 2 is a partially longitudinal side view showing the connection state of the same embodiment, and Figs. 3 and 4 are conventional FIG. 3 is a vertical side view showing an example of a connector. 1...First main body, 2...Second main body, 4, 5...
Check valve, 6...Small valve, 7...Valve seat, 17,2
5... Guide ring, 18, 26... Valve stem, 1
9, 27... Valve body, 22, 31, 32, 38...
Fluid vent.

Claims (1)

[Scope of utility model registration request] First and second bodies arranged on the same axis and provided so as to be able to approach and separate from each other, and valve holes that are slidably fitted into the first and second bodies and provided at their respective tip openings. A check valve that is closed by being pressed by a spring from the inside, and a valve hole of a second body that is fixed to the tip of a rod-like part that extends from the check valve of the first body toward the check valve of the second body. a small valve having a small diameter, and a valve seat that is slidably provided in the first body, has a small valve hole in its tip wall, and is pressed by a spring toward the second main body to seat the small valve in the small valve hole. In the fluid connector, the check valve is composed of a guide ring that is slidably fitted into each main body, and a valve body that is fixed to the guide ring via a valve shaft. A fluid passage hole is formed in the axial direction of the guide ring, and the outer shape of the valve body is made into a streamlined shape so that it can be seated and removed from each valve hole in the main body, and the outer shape of the small valve is made similar to the check valve. A fluid connector characterized by having a streamlined shape that continuously connects to the streamlined shape of a check valve when it comes into contact with the fluid connector.