JPH0138998B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an auto-connector used for connecting and disconnecting piping of various industrial machines including piping of various machines in steel works.

<Prior art> For example, as a conventional auto connector,
There is one shown in Publication No. 59-151687. Its main structure is as shown in FIG. 3, and consists of a pair of connector blocks 50, 60 provided with poppet valves 51, 61, respectively. When connecting the pipes, the blocks 50 and 60 are opposed to each other with the axes of the poppet valves aligned, and then they are brought close to each other. When the distance between the blocks becomes S, the protrusion 5 at the tip of the movable part of the poppet valves 51 and 61
2 and 62 come into contact with each other as shown by the phantom lines, and when the blocks 50 and 60 are brought closer together, the poppet valves press against each other and open the valves, and when both blocks are in complete contact, each valve is fully opened and the piping is opened. are combined. When disconnecting the piping, the blocks 50 and 60 are moved back from each other, contrary to the above-mentioned connection, and each valve self-seals due to the action of the springs 53 and 63, and the piping is disconnected.

<Problems to be Solved by the Invention> In the conventional autoconnector as described above, due to its structure, it was necessary to move the block toward or backward by a minimum stroke S in the axial direction of the poppet valve when connecting or disconnecting piping. For this reason, the conventional auto connector as described above has blocks 50 and 60.
The poppet valve is closed with the two blocks in contact with each other, and the piping can be disconnected by sliding one block horizontally or vertically relative to the other block, or conversely, the blocks 50 and 60 can be disconnected from their connecting surfaces. With the poppet valves in contact with each other, the poppet valves were slid to a position where their axes coincided, and in this position it was not possible to open the poppet valves and connect the pipes. Furthermore, when the pipes are connected, a relatively large chamber A is formed between the poppet valve 51 and the poppet valve 61 when both blocks approach each other, so a large amount of air mixes into the fluid in the pipes.
On the other hand, there was a drawback in that a considerable volume of fluid in chamber A spilled out when the pipe was disconnected.

<Means for Solving the Problems> The present invention requires that the poppet valve be opened and closed with a pair of blocks in contact with each other, and that the blocks be moved in the axial direction of the poppet valve when attaching and detaching piping. The purpose is to provide an auto-connector without.

The autoconnector according to the present invention includes a primary block and a secondary block provided in a pair, a valve seat formed opposite to the connection surface of each block, and a valve seat that communicates with the opening of the valve seat. an inner hole formed in the block, a first poppet valve slidably fitted into the inner hole of the primary block, and a first poppet valve configured to press the first poppet valve toward its valve seat. a second poppet valve slidably fitted into the inner hole of the secondary block; and an inner spring configured to press the second poppet valve toward its valve seat. a spring provided in the hole; a cylinder provided at the rear of the secondary side block; a piston with a piston rod facing the poppet valve; a return spring formed in the cylinder and urging the piston and piston rod in a direction opposite to the valve seat; and a cylinder chamber into which pressurized fluid is supplied and discharged to be pushed out toward the first poppet valve against the pressing force of the return spring.

<Function> According to the autoconnector of the present invention having the above-described structure, even if the primary side block and the secondary side block are separated or connected to each other, no pressure is generated in the cylinder chamber. When fluid is not supplied, each poppet valve is seated in its respective valve seat by the action of a spring, so that the piping is disconnected. When pressurized fluid is supplied to the cylinder chamber at the rear end of the cylinder formed in the secondary block with both blocks connected to each other, the piston moves toward the valve seat against the pressing force of the return spring. The piston rod pushes the poppet valve of the primary block open. As a result, the fluid sent from the fluid passage of the primary block acts on the poppet valve of the secondary block through its valve seat opening and pushes it open against the pressing force of the spring. Thus, both poppet valves are open and the fluid passages of both blocks are in communication, and the pressure fluid sent to the primary block flows into the secondary block and is delivered to the piping connected to the fluid passages.

When disconnecting the piping, when the pressure in the cylinder chamber is lowered, the piston moves back due to the action of the return spring, and the poppet valve of the primary side block automatically seats on the valve seat due to the pressing force of the spring. It becomes closed state. When the poppet valve of the primary block is closed, fluid pressure no longer acts on the poppet valve of the secondary block, so the poppet valve of the secondary block is also seated on the valve seat due to the pressing force of the spring. Similarly, it will automatically close. This disconnects the pipe.

<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 and 2.

FIG. 1 shows the state of the autoconnector of the present invention before connection, and FIG. 2 shows the state after connection. In Figure 1, 1a is 1 to which the high pressure side piping is connected.
The next block 1b is the secondary block to which the low pressure side piping is connected, and the connecting surfaces 2a, 2 of both blocks are
b is provided with valve seats 3a and 3b. Valve seat 3
The cylindrical body 30 including a is pressed by a spring 31 toward the secondary block 1b. A poppet valve 7a is slidably fitted into the inner hole 6a of the cylindrical body 30, and the poppet valve 7a is pressed in the direction of seating on the valve seat 3a by the action of a spring 8a.
Reference numeral 5a denotes a fluid passageway to which a high-pressure side piping is connected. A poppet 7b is slidably fitted into the inner hole 6b of the secondary block 1b, and the poppet valve 7b is pressed toward the valve seat 3b by a spring 8b. A fluid pressure cylinder 11 is connected to the rear of the secondary block 1b, and a piston 12 is slidably fitted into the cylinder. The piston 12 is pressed by a return spring 13 in a direction opposite to the direction of the valve seat 3b. 14 is a cylinder chamber into which pressure fluid is supplied and discharged, and 16 is a pressure fluid supply and discharge port. Piston 12 has piston rod 1
5 are continuous, and the tip thereof is a poppet valve 7b.
Its length is determined so that it penetrates through the connecting surface 2b and comes to a position flush with or slightly recessed from the connecting surface 2b. 5
b is a fluid passage to which a low pressure side piping is connected, and 17 is an air vent hole during operation.

In the state shown in FIG. 1 before the connector is connected, the pocket valves 7a and 7b are seated on the valve seats 3a and 3b, respectively, by the action of the springs 8a and 8b, and the fluid passages 5a and 5b are separated. To separate blocks 1a and 1b in this state, one block may be moved backward relative to the other block as in the conventional autoconnector shown in FIG. The connecting surfaces 2a and 2b may be shifted vertically or laterally while remaining in contact with each other.

To change the state shown in FIG. 1 to the connector connection state, supply pressure fluid to the cylinder chamber 14 from the pressure fluid supply/discharge port 16, and then
The rod 15 is moved toward the valve seat 3b (leftward in the figure) against the pressing force of the return spring 13. As a result, the tip of the piston rod 15 pushes open the poppet valve 7a of the primary block 1a against the spring 8a and lifts it off the valve seat 3a. The fluid passage 5a thereby communicates with the opening 4a of the valve seat 3a via the fluid passage 19 formed in the poppet valve 7a. The fluid that has reached the opening 4a acts on the poppet valve 7b of the secondary block 1b and pushes it open against the pressing force of the spring 8b. FIG. 2 shows the state at this time, where the poppet valves 7a and 7b are both separated from the valve seats 3a and 3b and are in the open state, and the pressure fluid is supplied from the fluid passage 5a of the primary block 1a to the opening 4a, 4b to the fluid passage of the secondary block 1b.

In order to return the state shown in FIG. 2 to the original state shown in FIG. 1, the pressure fluid in the cylinder chamber 14 may be discharged. Poppet valves 7a, 7b are springs 8a, 8b
The piston 12 and the piston rod 15 are returned to the state shown in FIG. 1 by the action of the return spring 13.

<Effects> In the autoconnector of the present invention, when connecting or separating the primary block 1a and the secondary block 1b, both blocks may be moved toward or backward in the axial direction of the poppet valve.
The connection surfaces 2a and 2b of a and 1b may be shifted vertically or laterally while remaining in contact with each other,
Axial stroke is not necessarily required, and it can be applied to a wider variety of industrial machines than conventional auto connectors.

Also, when the connecting surfaces of the blocks 1a, 1b are brought into contact, the valve seats 3a, 3b of the poppet valves 7a, 7b
are very close to each other, so the valve seat openings 4a, 4
The volume of chamber b is much smaller than that of chamber A formed when the conventional connector is connected as shown in FIG. Therefore, there is almost no possibility that air will be mixed into the fluid when the connectors are connected, or that the fluid will leak when the connectors are separated.

Therefore, the autoconnector of the present invention can be widely used for piping of fluid control devices of various machines.

[Brief explanation of drawings]

Fig. 1 is a schematic cross-sectional view of the main parts of a typical conventional auto-connector to explain its principle, Fig. 2 is a schematic cross-sectional view showing an embodiment of the auto-connector of the present invention before connection, and Fig. 3 FIG. 2 is a schematic cross-sectional view showing the state of the auto connector after connection. 1a...Primary side block, 1b...Secondary side block, 3a, 3b...Valve seat, 4a, 4b...Opening, 6a, 6b...Inner hole, 7a, 7b...Poppet valve, 8a, 8b... Spring, 11... Cylinder,
12... Piston, 13... Return spring, 14...
Cylinder chamber, 15...Piston rod.

Claims (1)

[Claims] 1 A primary side block and a secondary side block provided in a pair, a valve seat formed opposite to the connecting surface of each block, and a valve seat formed in the block communicating with the opening of the valve seat. a first poppet valve slidably fitted into the inner hole of the primary block; and a first poppet valve provided in the inner hole so as to press the first poppet valve toward its valve seat. a second spring slidably fitted into the inner hole of the secondary block.
a poppet valve, a spring provided in the inner hole to press the second poppet valve toward its valve seat, a cylinder provided at the rear of the secondary block, and a spring that slides into the cylinder. a piston having a piston rod which is freely fitted into the piston rod and which extends through the second poppet valve and faces the first poppet valve;
a return spring for urging the rod in a direction opposite to the valve seat; and a return spring formed in the cylinder for urging the piston and piston rod toward the first poppet valve against the urging force of the return spring. An auto connector consisting of a cylinder chamber where pressure fluid is supplied and discharged.