JP2003172487A - Connecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting device which easily connects a container and a tube when chemicals are taken out from a container including the chemicals, and prevents the liquid drip and the like when the container and the tube are separated from each other. <P>SOLUTION: In this connecting device composed of a plug comprising a main channel and a sub-channel, and a socket comprising a main channel and a sub-channel, and being engageable with the plug, and communicatable with the main channel and the sub-channel of the plug in an engaged condition, the socket has the main channel 6 formed on an outer periphery of a valve pressing body 10 fixed to a holding body, the sub-channel 14 formed outside of the main channel, and a valve for closing these channels, and a plug-side end face of the valve pressing body 10 forming the valve closing the main channel is flat. The plug has the main channel 34 formed on an outer periphery of a valve body 36 slidably held by a valve holding body 35, the sub-channel 33 formed outside of the main channel, and a valve for closing these channels, and a valve member 36a of the valve body 36 forming the valve closing the main channel at the plug side has a flat face abutted on the flat face formed on the end face of the valve pressing body at the socket side. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting device used for connecting a tube to a container for containing a liquid, and more particularly to a connecting device for taking out a drug from a container containing the drug. The present invention relates to a connecting device in which a container and a tube can be easily connected and liquid dripping does not occur when separated.

[0002]

2. Description of the Related Art Conventionally, in order to take out a liquid contained in a container, a method of introducing gas (air or the like) into the container and sending the liquid out of the container by the pressure thereof has been adopted. An example of this method will be briefly described. FIG. 3 is a partially cutaway view of a container containing a liquid that should not come into contact with gas, in which 101 is a container and 102 is another gas. An inner bag containing a liquid that does not consist of a liquid, 103 is a pipe for taking out the liquid from the inner bag, 104 is a liquid connection port connected to the take-out pipe 103 when the liquid in the inner bag is taken out of the container, 105 Is a gas connection port for introducing gas into the space between the inside of the container 101 and the outside of the inner bag 102. When taking out the liquid, gas (air or the like) is introduced from the gas connection port 105 to the outside of the inner bag, and the inner bag 102 is contracted by the pressure to deliver the liquid through the pipe 103 and the liquid connection port 104.

In addition to the above-mentioned method, if there is no particular limitation on the contact of liquid with other gas,
When directly storing the liquid in the container and taking out the liquid,
A method has also been adopted in which a gas is directly sent into the container and the liquid is taken out of the container by the pressure.

[0004]

In each of the above examples, the liquid connection port 104 for taking out the liquid and the liquid recovery unit (not shown), and the gas connection port 105 for introducing the gas and the gas (not shown). Since it is necessary to connect the supply unit using a separate connecting device, there are problems that the connection work takes time and the workability is poor.

For this reason, there has been proposed a connecting device capable of improving working efficiency by easily connecting different kinds of fluid passages by one connecting device (see Japanese Patent Laid-Open No. 2001-192099). This coupling device
A socket and a plug are provided, and the liquid recovery unit and the gas supply unit can be easily connected to the container side only by connecting the socket and the plug, and the workability can be greatly improved. The structure of this connecting device will be briefly described. FIG. 4 is a sectional view of a plug of the connecting device attached to the container side, FIG. 5 is a sectional view of a socket for connecting to the plug, and FIG. It is a sectional view of a connecting device in the state where it was set up.

In FIG. 4, a plug P attached to a container is provided with, for example, a main flow passage 111 through which a liquid passes and a sub flow passage 112 through which a gas passes, and a valve 113 for closing the flow passage is arranged in the main flow passage 111. Valve spring 11
4, the valve 113 is urged upward in the figure to close the main channel 111. This valve 111 has a function of opening a flow path by contacting with a protrusion formed on the valve on the socket side when a socket described later is connected to the plug P when a protrusion 115 is formed at the tip. Around the main flow channel 111, a plurality of sub flow channels 112 for supplying gas into the container are formed. The sub-flow passage 112 is configured to be connected to the socket-side sub-flow passage in a manner to be described later when a socket to be described later is connected.

In FIG. 5, a socket S connected to the plug P has a main channel 116 and a sub channel 11 corresponding to the plug.
7, a valve 118 for closing the flow passage is arranged in the main flow passage 116, and the valve 118 is biased downward by the valve spring 120 to close the flow passage. This valve 118 has a protrusion 119 at its tip.
When the socket S is connected to the plug P, the socket S comes into contact with the protrusion 115 formed on the valve 113 on the plug side to open the flow path. In addition, the main channel 116
A plurality of sub-flow passages 117 for supplying gas into the container are formed around the sub-passage 117, and the sub-flow passages 117 are connected to the annular flow passage 121 formed on the socket side. In order to use the connecting device having such a structure, the sub-flow passage 117 on the socket side is provided with a gas supply source through an appropriate pipe and the main flow passage 11
A liquid delivery unit is connected to 6 via a pipe as appropriate. Further, as shown in FIG. 4, the plug P is attached to the attachment port on the container side by appropriate fixing means.

When the socket S is connected to the plug P after such preparations, the valve 118 closing the main flow path of the socket S and the projections 119 and 115 of the valve 113 closing the main flow path of the plug P are joined together. Contact each other, and as shown in FIG. 6, the main flow paths 116 and 111 are communicated with each other. Further, the sub-channels 117 and 112 are also communicated with each other via the annular channel 121. For this reason, when the main plug on the gas supply source side (not shown) is opened, gas is supplied from the gas supply source into the container through the socket side sub-flow channel 117 → the annular flow channel 121 → the plug side sub-flow channel 112, and the inner bag A gas pressure is applied to the outside, and the inner bag is contracted by the pressure. As a result, the liquid in the middle bag is the main flow path 111 on the plug side → the open valve 113 on the plug side → the open valve 118 on the socket side → the main flow path 1 on the socket side.
Liquid can be delivered to the outside of the container via 16.

According to this structure, the sub flow passage 11 of the plug P is formed.
Since 2 communicates with the sub-flow passage 117 of the socket S through the annular flow passage 121 formed in the socket S, even if the socket S and the plug P are connected at an arbitrary twist angle, each sub-flow passage 117 is connected. , 112 are connected to the annular flow channel 121, the effect that the flow channels can be connected without paying attention to the direction of the socket S or the plug P can be achieved.

However, in this connecting device, there is no valve for closing the sub-flow passages 117 and 112 for supplying gas into the container, so that the main plug on the gas supply source side is closed after the work is completed. If the socket S is separated from the plug P of the coupling device by forgetting the above, there is such a disadvantage that the gas supplied to the container side is released from the sub flow path 117 of the socket S to the atmosphere.

Further, since the valve 113 of the plug P and the valve 118 of the socket S, which communicate with the main flow path, come into contact with each other via the projections 115 and 119 formed respectively, the socket S and the plug are separated by the separating operation. When P starts to separate, a liquid pool occurs at this portion, and when the socket S and the plug P are completely separated, a liquid sagging phenomenon occurs from this liquid pool.

Therefore, according to the present invention, a valve that automatically closes the flow path when the socket and the plug are separated is arranged in each of the main flow path and the sub flow path, and the sliding portion of the valve is improved in order to improve the operability of the valve. It is possible to simplify the assembly structure of the valve while using a material with good slidability, and to provide a new connecting device that does not cause liquid dripping when the socket and plug are separated. The purpose is to resolve. According to the present invention, the valves provided in the main flow passages on the socket side and the plug side are in contact with each other at their surfaces to prevent liquid dripping, and to connect different fluid flow passages to one connecting device. Can be simultaneously connected with each other, and can be used, for example, in the case of simultaneously connecting a liquid flow path that should not be exposed to air and an air flow path. Further, since the reliable slidability of the valve can be ensured while ensuring the high sealability, the operability becomes good.

[0013]

Therefore, the technical solution adopted by the present invention comprises a plug having a main flow path and a sub flow path, and a main flow path and a sub flow path, which can be fitted to the plug. In addition, a connection device comprising a socket capable of communicating the main flow path and the sub flow path of the plug in a fitted state, wherein the socket is provided on the outer periphery of the valve push body fixed to the holding body. A main flow path formed, a sub flow path formed outside the main flow path, and a valve that closes these flow paths, and the plug-side end surface of the valve pressing body that constitutes the valve that closes the main flow path is a flat surface. On the other hand, the plug is formed on the outer circumference of the valve main body slidably held by the valve holder, and a sub-flow path formed outside the main flow path. Has a valve that closes the flow path, and configures a valve that closes the main flow path on the plug side The valve member that the valve body is a connecting device characterized by comprising a flat abutting plane formed on the end surface of the socket side of the valve 押体. Further, the sub valve for closing the sub flow path on the plug side and the sliding portion for the sub valve for closing the sub flow path on the socket side are made of a material having good slidability. Further, the connection device is characterized in that the socket and the plug are provided with a different connection preventing mechanism for preventing different connection for each fluid.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a coupling device according to the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing a state where a socket and a plug constituting the present connecting device are separated, and FIG. 2 is a sectional view showing a state where the socket and the plug are connected.

[Structure of Socket] In the drawing, S is a socket, and the socket S is provided with a socket body 1, an adapter 2, a locking member holder 3, and a sleeve 4. The adapter 2 is screwed into the socket body 1 and has a main channel 6 communicating with the main channel opening 5 formed in the socket body 1. A locking member holder 3 is screwed onto the plug connection side end of the socket body 1, and a sleeve 4 is slidably provided on the outer periphery of the locking member holder 3. A spring 7 is arranged between the sleeve 4 and the locking member holding body 3, and a locking member 8 for locking the plug is held in the locking member holding body 3 in a state of semi-projecting toward the center. The sleeve 4 is pressed in the central direction.

A holder 9 is provided at the center of the socket body 1.
Is provided, and the valve pressing body 10 is fixed to the center of the holding body 9 by a nut 11. A plurality of liquid flow paths 12 are formed in the holding body 9, and a flat surface 10a that abuts a valve member 36a attached to an end surface of a valve body 36 on the plug side, which will be described later, is formed at the tip of the valve push body 10. Has been done. A valve holder 13 made of a material having a small sliding resistance (for example, Teflon (registered trademark)) is arranged in the socket body 1, and a sub-flow passage 14 through which a gas flows is provided between the valve holder 13 and the socket body 1. Has been formed. The sub-flow passage 14 communicates with a sub-flow passage opening 15 formed in the socket body 1. A sub-valve 16 is arranged in the sub-flow path 14, and the sub-valve 16 is fitted to the outer circumference of the valve holder 13 and can slide in the axial direction. A spring 17 is arranged between the sub-valve 16 and the valve holder 13, and the urging force of the spring 17 causes the sub-valve 16 to abut against the valve seat 18 formed in the socket body 1 to open the sub-flow passage 14. It can be closed. The sub-valve 16 is provided with a seal ring 19 for ensuring a seal between the sub-valve 16 and the valve seat 18, and a seal ring 20 for ensuring a seal between the sub-valve 16 and the valve holder 13. Further, a seal ring 21 for ensuring a seal between the valve holder 13 and the socket body 1 is arranged.

On the inner circumference of the valve holder 13, the valve pusher 1 is provided.
A main valve 22 that can contact the valve seat 10b at the tip of 0 and close the main flow path 6 is slidably arranged. The main valve 22 is a spring 23 arranged between the main body 22 and the holding body 9.
Is urged toward the valve seat 10b. The main valve 22 has a valve seat 10b formed on the valve body 10.
There is provided a valve body 24 that abuts against the main flow path and closes the main flow path. Further, a seal ring 25 that secures a seal with the valve holder 13 is arranged on the outer periphery of the main valve 22.

When the socket S is not connected to the plug P, the main flow path opening 5 is the main flow path 6 in the adapter 2, the flow path 12 formed in the holder 9, the outer circumference of the valve pusher 10 and the valve holder. 13 is in communication with the flow path between the valve 13 and the valve 13, and the flow path is closed when the valve element 24 provided in the main valve 22 is in contact with the valve seat 10b of the valve pusher 10. ing. Further, the sub-flow passage opening 15 formed in the socket body 1 communicates with the sub-flow passage 14 formed between the valve holder 13 and the socket body 1, and the sub-valve 16 contacts the valve seat 18 formed in the socket body 1. Sub-channel 14 by contact
Is closed. The above-mentioned material having a small sliding resistance is used for the valve holder 13 that is in sliding contact with the seal ring 25 in this example. However, when the seal ring 25 is attached to the valve holder side, It is desirable that the main valve 22 that is in sliding contact be made of a material having low sliding resistance. In short, it is preferable to use a material having a small sliding resistance for the mating member that comes into contact with the seal ring 25 of the sliding portion.

[Plug Configuration] In the figure, P is a plug, and the plug P includes a plug body 31 and an inner cylinder body 32, and a sub-flow path 33 is provided between the inner cylinder body 32 and the plug body 31.
However, a main flow path 34 is formed in the inner cylindrical body 32. A valve body 36 held by a valve holder 35 is slidably held in the main flow path 34. A valve member 36a having a flat surface that comes into contact with the flat surface 10a of the valve push body 10 on the socket side is attached to the end surface of the valve body 36.
Further, the valve body 36 is urged toward the valve seat 38 formed on the inner cylindrical body 32 by the spring 37 arranged between the valve body 36 and the valve holding body 35, and the valve member 36 a provided on the valve body 36 moves the valve seat 36.
8, and a plug-side main valve that can close the plug-side main flow path 34 is configured by these. A plurality of flow paths 35a are formed in the valve holder 35. In addition, a plug-side sub valve 39 that opens and closes the sub flow passage 33 is arranged in the sub flow passage 33 formed between the inner cylindrical body 32 and the plug body 31. The plug-side sub valve 39 is made of a material having a low frictional resistance such as Teflon, and is biased by a spring 40 toward a valve seat 41 formed in the plug body 31. Plug side auxiliary valve 3
A seal ring 42 for sealing gas is arranged at 9, and a seal ring 43 for ensuring a seal with the plug side sub valve 39 is arranged at the inner cylinder 32. In the figure, 44 is a stop ring for fixing the valve holder 35 to the inner cylinder, 45 is a collar for holding the inner cylinder 32, and 46 is a stop ring for fixing the collar. In this example, the plug-side auxiliary valve 39 is made of a material having a small sliding resistance, but as with the socket, the mating member that comes into contact with the seal ring 43 of the sliding portion is made of a material having a small sliding resistance. It is preferable to configure.

[Usage form of connecting device] As shown in FIG. 1, the plug P constituting the connecting device has a holding means 51 (in this example, a bolt type fixing means that can be tightened with a tool in this example) at an opening on the liquid container side. Fixed). At this time, the main flow path 34 on the plug side communicates with the inner bag in the container, and the sub flow path 33 communicates with the space between the container and the outer side of the inner bag. The sub-flow path 14 of the socket S is connected to a gas supply source via a suitable pipe, and the main flow path 6 is connected to a liquid recovery part via a suitable pipe.

To connect the socket S to the plug P, the sleeve 4 on the socket side is retracted against the urging force of the spring 7, is inserted into the plug in this state, and when the insertion is completed, the sleeve 4 is released. 4 is advanced by the urging force of the spring 7, the locking member 8 engages with the recess 47 formed on the plug P side, and the two are connected. In this state, as shown in FIG. 2, the sub-valve 16 of the socket S and the sub-valve 39 of the plug P come into contact with each other, and both of them move in the directions away from each other against the biasing forces of the springs 17 and 40, The sub-channels 14 and 33 communicate with each other. Sub flow paths 14, 3
When 3 communicates, gas is supplied from the gas supply source into the container, and the inner bag is contracted by the gas pressure.

The main valve 22 of the socket S is a plug P.
Is pushed by the end surface of the inner cylindrical body 32, moves backward against the spring 23, the valve body 24 separates from the valve seat 10b of the valve body 10, and the main flow path 6 with the valve body 10 is opened. Further, the tip end flat surface 10a of the valve push body 10 on the socket side and the valve body 3 on the plug side
6 is in contact with the flat surface of the valve member 36a to press the valve body 36 on the plug side against the urging force of the spring 37, and the valve body 36 is retracted to open the main valve on the plug side and open the main flow path 3
Communicate with 4. As a result, the liquid in the inner bag can be sent out of the container via the main flow path 34 on the plug side → the main flow path 6 on the socket side. If there is no problem even if the liquid comes into contact with the gas, it is natural that the gas can be directly enclosed in the container to take out the liquid.

Although the embodiments of the present invention have been described above, the names of the main flow path, the sub flow path, and each member described above are merely names for distinguishing the flow path and the member, and other appropriate names. Of course, can be used.
Further, the main channel opening formed on the socket side can be provided on the adapter side. Further, the mechanism for connecting the socket and the plug by operating the sleeve can adopt the same function and another structure. Further, by applying a well-known key structure capable of preventing different connections between fluids between the socket and the plug, it is possible to prevent mixing of fluids due to different connections. In addition, in order to improve the slidability in the sliding portion, the member itself is made of a material having a small sliding resistance in this example, but a material having a good slidability is embedded in the sliding portion, It is also possible to apply. Further, not only one of the sliding members but also both of them can be made of a material having a good slidability. Furthermore, the present invention can be embodied in various other forms without departing from the spirit or main characteristics of the present invention, and therefore, the above-mentioned embodiments are merely exemplifications in every respect, and are not construed as limiting. should not be done.

[0024]

As described in detail above, according to the present invention,
Since the contact portion between the valve pusher provided on the socket and the valve body provided on the plug is made to abut on a flat surface, there is no liquid pool at this portion during separation, and the liquid sagging phenomenon is prevented. be able to. Further, since the main flow path is formed on the outer circumference of the valve pusher on the socket side, the valve structure for closing the main flow path and the sub flow path can be simplified. In the socket and the plug, the parts constituting the sliding portion are made of a material having a small sliding resistance, so that the flow path can be opened and closed smoothly, and operability is excellent.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state where a socket and a plug constituting a coupling device are separated from each other.

FIG. 2 is a cross-sectional view showing a state in which the socket and the plug are connected to each other.

FIG. 3 is a partial cutaway view of a container that stores a gas and a liquid in a non-contact state.

FIG. 4 is a sectional view of a plug of a conventional coupling device.

FIG. 5 is a sectional view of a socket of a conventional coupling device.

FIG. 6 is a cross-sectional view showing a conventional connecting device in which a socket and a plug are connected to each other.

[Explanation of symbols]

1 socket body 2 adapter 3 Locking member holder 4 sleeve 5 Main channel opening 6 main flow path 7 spring 8 locking member 9 holder 10 valve body 11 nuts 12 channels 13 Valve holder 14 Sub flow path 15 Sub-channel opening 16 Sub valve 17 spring 18 seat 19, 20, 21 Seal ring 22 Main valve 23 spring 24 valve 31 Plug body 32 Inner cylinder 33 Sub flow path 34 Main flow path 35 valve holder 36 valve body 37 spring 38 valve seat 39 Plug side auxiliary valve 40 spring 41 valve seat 42,43 Seal ring 44,46 Stop ring 45 colors

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3E014 PD21 PD22 PE01 PE03 PE04                       PE05 PE30 PF10                 3J106 AB01 BA03 BB06 BD01 BE13                       CA01 CA11 EA03 EB07 ED32                       EE12 GA03 GA04

Claims (3)

[Claims] 1. A plug having a main flow path and a sub flow path, and a main flow path and a sub flow path that can be fitted to the plug, and in the fitted state, the main flow path and the sub flow path of the plug. A coupling device comprising a socket capable of communicating with a passage,
The socket has a main flow path formed on the outer periphery of a valve pusher fixed to a holding body, a sub flow path formed outside the main flow path, and a valve for closing these flow paths. The plug-side end surface of the valve pusher constituting the valve for closing the valve is formed into a flat surface, while the plug has a main flow path formed on the outer periphery of the valve body slidably held by the valve holding body,
Further, the valve member of the valve body that has a sub-flow passage formed outside the main flow passage and a valve that closes these flow passages and that constitutes the valve that closes the main flow passage on the plug side is A coupling device having a flat surface that comes into contact with a flat surface formed on an end surface. 2. The sub-valve for closing the sub-flow passage on the plug side and the sub-valve for closing the sub-flow passage on the socket side are made of a material having good slidability. The connection device according to. 3. The connection device according to claim 1, wherein the socket and the plug are provided with a different connection preventing mechanism for preventing different connection for each fluid.