JPS5918224Y2 - Multi-channel piping fittings - Google Patents

Description

[Detailed description of the invention] Pipes that have flanges at their open ends, such as water pipes buried underground, are usually connected using bolts and nuts 1~ by butting the flanges against each other. In the case of multi-channel piping that has a flange and connects multiple small-diameter pipes to the flange, there are cases where connections cannot be made smoothly due to steps or slopes on the attachment surface. .

These problems are the same even when fittings that can quickly connect pipes are used instead of bolts and nuts.The most inconvenient thing when using such fittings is when three or more The axes of the joints were misaligned, making it impossible to connect these joints at the same time.

In addition, even after the connection has been completed normally, if the axes of adjacent piping are misaligned or abnormal external force is applied to the piping, part or all of the joints may come off, causing the liquid or gas being supplied to This led to an accident in which the liquid leaked.

In the case of a joint for connecting a large number of pipes, this invention
In view of the above-mentioned inconvenience if these joints are fixed to the flange, even if the individual axes are slightly misaligned, the misalignment can be corrected on the socket side. This invention relates to a multi-channel piping joint devised for this purpose, and one embodiment of the present invention will be described below with reference to the drawings.

Figure 3 shows the piping equipped with this proposed joint.
, 40 is a main pipe with flanges 2 and 41 individually provided at the open end, and 36.50 is a main pipe in which three pipes are arranged around the main piping 1 and 40, and the ends are fixed on the flanges 2 and 41. For example, main piping 1, 40 and sub piping 36.50 are used to supply cooling water, and sub piping 36.50 is used to supply pressure oil to the hydraulic circuit. Different fluids can be supplied, and as shown in FIG. As shown in FIG. 2, the end portion is provided with a tapered surface portion 42 whose diameter gradually decreases toward the open end portion, and under normal conditions, the tapered hole 4 and the tapered surface portion 42 are connected in a surface contact state. The axes of both pipes 1 and 40 are aligned and connected to each other.

Next, the sub piping 36 around the main piping 1, 40,
The socket 25 and plug 44 for connecting the connector 50 will be explained.

In FIG. 1, reference numeral 3 denotes mounting holes for sockets 25 that are bored in the axial direction of the collar 2 of the main pipe 1, and in the embodiment, they are provided at three equally spaced locations.

Reference numeral 5 designates a locking portion that is provided at the rear portion of the mounting hole 3 and protrudes toward the centripetal direction.

Reference numeral 11 designates a main cylindrical body of the socket 25, and the base 10 of the main cylindrical body 11 is fitted into the mounting hole 3 so as to be slidable in the front-back direction and tiltable in the radial direction.

12 is a stepped portion provided between the main cylinder body 11 and the main cylinder base 10 of the socket 25 in order to make the socket 25 slidable in the axial direction, and 2' is a stepped part that allows the socket 25 to be tilted in the radial direction. The inner surface of the mounting hole 3 formed in the flange 2 and the main cylinder base 1
This is the gap provided between 0 and 0.

31 is an elastic ring attached to the outer periphery of the main cylinder base 10 so as to be movable back and forth with rings 32 and 33 interposed therebetween;
．． 33 has an angular cross-section and is engaged with the elastic ring 31 to prevent the elastic ring from falling off.

Note that one of the locking rings 32 is located inside the mounting hole 3 and engages with the stepped portion 12 a provided at the center of the main cylinder body 11 , and the other locking ring 32 is located at the rear of the main cylinder base 10 . The retaining ring 33 is engaged with the side surface of the collar portion 2.

A compression spring 34 is interposed between the locking ring 32 and the locking portion 5, and causes the elastic ring 31 attached to the locking ring 33 to come into contact with the other side of the locking portion 5.

A stop ring 35 is attached to the rear end of the main cylinder base 10 to prevent the main cylinder 11 from separating from the collar 2.

Inside the main cylindrical body 11 of the socket 25, a valve seat 14 is provided at the center of a fluid passage passed through in the axial direction.
Fig. 1 Valve body 1 springing from the left side with compression spring 15
6 is seated, and the valve body 16 separates from the valve seat 14 when an external force is applied from the right direction in the figure.

Reference numeral 17 denotes a plug insertion cylinder (hereinafter referred to as an inner cylinder) housed inside the main cylinder 13. A plurality of grooves 18 are provided in the circumferential direction on the outer periphery of substantially both ends of the inner cylinder 17. A seal ring 19 is housed to prevent fluid from leaking toward the outer circumference of the inner cylinder 17.

21 is a stop ring provided to prevent the inner cylinder 17 from escaping from the main cylinder interior 13, and 20 is a backing provided between the stop ring 21 and the inner cylinder 17.

Reference numeral 22 denotes a plug insertion hole in the inner cylinder 17, and a groove 23 is provided in the inner peripheral surface of the insertion hole 22 in the circumferential direction, and a seal ring 24 is attached to the groove 23 to prevent fluid from flowing toward the outer circumference of the plug. Prevent leaks.

In FIG. 2, reference numeral 43 denotes plug mounting holes drilled in the axial direction of the flange 41 of the main pipe 40, which are equally spaced apart like the mounting holes 3 of the socket 25.
A plug bushing is attached to this attachment hole 43.

The plug 44 has a flange 46 at the base of its main body 45,
It is fixed to the flange 41 with a seal ring 51 interposed therebetween.

Reference numeral 47 denotes a valve seat provided at the tip of the plug 44, on which a valve body 49, which is springed from the right direction in FIG. 2 by a compression spring 48, is seated.

Next, the operation of the present invention will be explained based on the above embodiment.

In FIG. 3, in order to connect the sub-piping 36 on the main piping 1 side and the sub-piping 50 on the main piping 40 side together with the main piping 1.40, the socket 25 and the plug 44 must be positioned so that they are butted against each other. Then, the tapered surface portion 42 of the main pipe 40 is inserted into the tapered hole 4 of the main pipe 1, and at the same time, the socket 25 and the plug 44 are coupled.

Therefore, the taper 714 of the main pipes 1, 40 and the surface of the tapered surface portion 42 may be damaged due to repeated connection and separation of the main pipes 1, 40, or due to slight manufacturing errors or irregularities over time during installation. Main piping 1, 4 by
0 axes no longer match.

If the axis lines A and B become out of alignment in this way, the socket 25
However, even if such a situation occurs, the present invention maintains the axial line between the socket 25 and the plug as described below. kept consistent.

The explanation will be given below according to FIGS. 6 to 8.

FIG. 6 shows that even if the axes A and B of the socket 25 and the plug 44 are on the same straight line, the socket and the plug are too close together, and when the plug 44 is inserted into the cylindrical body 17 of the socket 25, the plug Compression spring 3 due to the pressing force of the play
4 is compressed, and the socket 25 is moved back within the maximum distance at which the stepped portion 12 contacts the front surface of the collar portion 2, and both 25
．． The connection is completed while accurately maintaining the positional relationship of 44 when connected.

Figure 7 shows the axis A of the socket 25 and the plug.

B is parallel but not on the same straight line,
In this case, normally it is not possible to combine the socket 25 and the plug shaving, but in the present invention, the plug shaving is connected to the socket 25.
When attempting to insert the elastic ring 31.31 between the inner surface of the mounting hole 3 and the main cylinder base 10 into the main cylinder body 13, the elastic ring 31.31 is deformed, and at the same time the compression spring y
The socket 25 and the plug 44 are reliably connected by being compressed and corrected so that the axial center line A of the main cylinder 11 and the axial center line B of the plug play are aligned in a straight line.

In this case, the outer circumferential seal ring 19 of the inner cylinder 17 that is in contact with the main cylinder interior 13 also deforms to help the socket 25 move in parallel.

FIG. 8 shows the axis A of the socket 25 and plug 44.

In this case, the socket 25 and the plug 44 cannot normally be connected, but the present invention allows the plug 44 to connect the seal ring 19, the packing 20, and the elastic ring 31. compression spring 34
etc., the plug 44 can be easily inserted into the inner cylinder 17, and the socket 25 and the plug 44 can be reliably connected.

Although the embodiments have been described above, the present invention includes a pipe in which a plurality of sockets protrude from the flange formed at the open end, and a plug that can be connected to and separated from the sockets at the flange also formed at the open end. The socket is a joint that connects the protruding multi-channel piping, and the socket has a main cylinder whose base can be tilted in the radial direction by an elastic ring fitted inside the collar, and can be tilted forward by a compression spring. It urges advancing force and supports tilting in the radial direction, and furthermore, an inner cylinder is fitted inside the main cylinder with seal rings interposed between the inner and outer peripheries.
According to the present invention, the socket provided in one pipe moves in the front-rear direction as well as in the vertical and horizontal directions with respect to the plug provided in the other pipe, and the direction of the inner cylinder provided inside the main cylinder of the socket is adjusted to the direction of the plug. The plug and socket can be connected without compromising the sealing performance provided by the seal ring, and in any case, the orientation of the socket can be automatically corrected to match the axis of the plug to prevent fluid leakage. Piping connections can be made without any damage.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a side view showing a socket provided at the open end of one pipe cut together with a part of the pipe, and Fig. 2 is a side view showing the socket provided at the open end of one pipe. Fig. 3 is a side view showing a plug provided at the open end of the pipe cut away together with a part of the pipe; Fig. 3 is a side view of the pipe showing an example of its use;
The figure shows a front view of the open end of one pipe to which the socket is attached, Figure 5 is a front view of the open end of the other pipe to which the plug is attached, and Figures 6 to 8 show the axis of the socket and the plug. This is a diagram when the axis center line is in an abnormal positional relationship, and the sixth
The figure shows that if the socket and plug are too close,
The figure shows a case where the axes of the socket and plug are parallel but deviate in the vertical direction, and FIG. 8 is an explanatory view where the socket and plug are in a slightly crossed state. 10 is the base of the socket main cylinder body, 11 is the socket main cylinder body,
17 is an inner cylinder, 19.24 is a seal ring, 25 is a socket, 31 is an elastic ring, 34 is a compression spring, 35 is a strip ring, and 19 is a plug.

Claims (1)

[Scope of utility model registration request] A joint that connects a pipe in which a plurality of sockets protrude from a flange formed at an open end, and a multi-channel pipe in which a plug protruding from a flange formed at the open end can be connected to and separated from the sockets. The socket is configured such that the base of the main cylindrical body is tiltable in the radial direction by an elastic ring fitted inside the collar, and
A compression spring urges forward advancing force and supports tilting in the radial direction.Furthermore, inside the main cylinder, there is a multi-layer structure with an inner cylinder fitted with a seal ring interposed between the inner and outer peripheries. Fittings for flow path piping.