JPH0989174A - Rocking universal pipe coupling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a piping structure as well as to impart flexibility to a pipe coupling by providing ring bodies to be mounted in spaces formed between the inner peripheral surface of a casing and the spherical expansion parts of a bend so that it may be freely attached and detached, and in which the spherical parts capable of being freely slid on the spherical expansion parts of the bend are formed on the inner peripheral surfaces. SOLUTION: In a bend 1, spherical expansion parts 2 are expanded and formed on both ends. In a pair of coupling main bodies 3, spherical recessed parts 4 to be fitted around the spherical expansion parts 2 of the bend 1 so as to be freely slid are formed on the inner peripheral surfaces. In spaces 13 formed between the outer peripheral surfaces of the spherical expansion parts 2 of the bend 1 and the inner peripheral surfaces of the coupling main bodies 3, a pair of ring bodies 14 formed of circular-arc pieces are mounted so as to be freely attached and detached. The outer peripheral surfaces of the ring bodies 14 are formed into such a shape as to coincide with the inner peripheral surface of a casing 8, and slidable spherical surfaces 15 slidable on the spherical expansion parts 2 of the bend 1 are formed on the inner peripheral surfaces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swingable pipe joint, and more particularly to a swingable pipe joint capable of favorably performing piping such as water supply and sewerage.

[0002]

2. Description of the Related Art Generally, when connecting pipes in a bent state, pipes are connected to a pair of connected pipes by using a plurality of joints having different shapes such as elbows and nipples.

[0003]

However, since the above-mentioned conventional piping means uses a large number of deformed joints, the number of parts is unnecessarily increased and a series of piping work is extremely complicated. Therefore, there is a fatal problem that the workability is remarkably lacking.

Further, since such piping means has no flexibility, it is difficult to carry out piping work or change work after piping when the axis of the pipe to be connected is misaligned. However, when an external force is applied to the pipe body or the piping portion, each of these members is damaged, and the circulating fluid has a great drawback.

Therefore, the present invention has been made in order to solve the above-mentioned conventional problems, and a pipe joint is provided with flexibility and simplification of the piping configuration is performed, whereby a series of piping work can be performed. The task is to provide a large amount of flight.

[0006]

That is, the means adopted by the present invention in order to achieve the above object is that the spherical bulging portions 2 are provided at both ends.
And a pair of joint main bodies 3 each having a spherical concave portion 4 that is slidably fitted on the spherical bulging portion 2 of the bend 1 at one end thereof, and the inside of the joint main body 3. Packing 6 interposed between the peripheral surface and the spherical bulging portion 2 of the bend 1,
The annular casing 8 into which the bend 1 is inserted and connected to one end of the joint body 3, and the space portion 13 formed between the inner peripheral surface of the casing 8 and the spherical bulging portion 2 of the bend 1 are attached and detached. A ring body 14 which is freely mounted and has a spherically slidable spherical surface portion 15 formed on the inner peripheral surface of the spherically bulged portion 2 of the bend 1.
In that it consists of

Thus, when a pair of pipes to be connected are connected to the pipe joint characterized by the above structure by pipe connection,
Since such a pipe joint is provided with the bend 1, the pipe to be connected is piped in a bent state. In addition, at the time of this piping, the casing 8 in which the ring body 14 is mounted is temporarily connected to the joint body 3 so that the packing 6 does not come into pressure contact with the bend 1, so that the load by the packing 6 is not applied. The joint body 3 can be freely swung with respect to the bend 1, and piping work can be easily performed.

Further, since the spherical bulging portion 2 of the bend 1 is spherically slidably fitted onto the spherical concave portion 4 of the joint body 3, both of them oscillate with each other. It is possible to oscillate it appropriately for piping, and it is possible to increase the connection angle of the pipe to be connected, and when external force is applied to the pipe or pipe joint to be connected after piping, Oscillates to absorb this external force.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

1 to 3, reference numeral 1 denotes a bend in which spherical bulging portions 2 are bulged at both ends thereof, and the bending angle thereof is
It is set to 30 °.

Reference numeral 3 denotes a pair of joint bodies having spherical concave portions 4 which are fitted on the spherical bulging portions 2 of the bend 1 so as to be slidably spherically formed on the inner peripheral surfaces thereof, and one joint body 3a has a collar at both ends. It is for a socket having a flange 5 and the other joint body 3b has a flange 5 only at one end. Each flange 5 has a plurality of through holes 5a formed at a predetermined interval.

Reference numeral 6 denotes a seal packing which is mounted in a recess 7 provided in the inner peripheral surface of one end of the joint body 3 in the circumferential direction.
Reference numeral 8 is an annular casing having a flange 9 at one end, and a bolt is inserted into the through hole 9a formed in the flange 9 at a predetermined interval and the through hole 5a of the flange 5 of the joint body 3.
The nut 11 is inserted through 10 and screwed together to connect them, and the other end of the inner peripheral surface of the casing 8 is formed with a small diameter to provide a step portion 12.

Reference numeral 13 denotes a space portion formed between the outer peripheral surface of the spherical bulging portion 2 of the bend 1 and the inner peripheral surface of the joint body 3, and the space portion 13
A ring body 14 composed of a pair of arc-shaped pieces is detachably attached to the outer peripheral surface of the ring body 14 so as to match the inner peripheral surface of the casing 8 and the inner peripheral surface is bent. A spherically slidable spherical surface portion 15 is formed on the spherically bulged portion 2 of 1.

The present embodiment has the above configuration.
The swingable pipe joint A is used by being buried in the ground for use as a joint for a water pipe, for example. In practice, however, the swingable pipe joint A is carried into the site in the following assembled state and the piping work is performed.

That is, with the bend 1 inserted in the casing 8 and the ring body 14, the ring body 14 is mounted on the casing 8 while reducing its diameter. Next, the bend 1 is inserted into the joint body 3 to which the packing 6 is preliminarily mounted, and the bolt 10 and the nut 11 are temporarily fixed to the flange 5 of the joint body 3 and the flange 9 of the casing 8 to connect them. In this state, packing 6
Is not in pressure contact with the outer peripheral surface of the bend 1, the joint body 3 can be freely swung with respect to the bend 1.

First, the pipes B and B'to be connected are arranged on both sides of the pipe joint A, and the pipe body B to be connected is inserted while adjusting one of the joint main bodies 3a to adjust the bolts 10. Then, the nut 11 is tightened and the flange 5 of the joint body 3 and the flange 9 of the casing 8 are connected. Similarly, after inserting the connected pipe body B'into the other joint body 3b and tightening the bolt 10 and the nut 11, the joint body 3 and the connected pipe bodies B and B'are fixed by a conventionally known fixing means. The pipe work is completed by fixing the pipes to each other, and the pipes B and B ′ to be connected are connected in a straight line as shown in FIG. 1 with the packing 6 pressed against the outer peripheral surface of the bend 1.

Thus, at the time of such piping, the packing 6
Is not pressed against the outer peripheral surface of the bend 1, there is an advantage that a series of piping work can be carried out very easily, and this makes it possible to improve work efficiency on site.

Since the joint body 3 of the pipe joint A thus piped is swingable with respect to the bend 1,
As shown in FIGS. 2 and 3, it has the flexibility of continuously changing the connection angle of the connected pipes B and B ', and there are obstacles such as gas pipes and sewer pipes installed in the ground. Even in such a case, such an obstacle can be satisfactorily avoided.

Further, when the axial centers of the pipes B and B'to be connected are deviated, or when the connection angle of the pipes B and B'to be connected has to be changed later, It is possible to flexibly respond by swinging the bend 1 and the joint body 3 as appropriate.

By tightening the bolt 10 and the nut 11,
Since the packing 6 is pressed against the outer peripheral surface of the bend 1, a load is applied, but when an external force such as ground subsidence is applied to the pipe joint A, the swing motion of the bend 1 and the joint body 3 is appropriate. Since it is performed and absorbed, it is possible to avoid the situation where the circulating fluid leaks.

Further, the pipe joint A according to the present embodiment has an advantage that it can be manufactured inexpensively and the assembling and disassembling work can be simplified because the whole structure is very simple and the number of parts is small.

Although the bending angle of the bend 1 is set to 30 ° in the above embodiment, the present invention is not limited to this, and the bending angle can be arbitrarily changed.

Further, in the embodiment, the ring body 14 is used as a semi-circular arc-shaped piece to maintain the connected state of the bend 1 and the joint body 3, but it is not always necessary to constitute in this way. You may use the ring body 14 which has a partial notch.

Besides, the configurations of the respective parts such as the shapes of the joint body 3, the casing 8 and the ring body 14 can be arbitrarily changed in design within the scope intended by the present invention.

[0025]

As described above, since the present invention is provided with the bend, it is possible to connect two pipes to be connected at a constant connection angle with one swingable pipe joint. Therefore, as compared with the conventional one using a large number of elbows, nipples, etc., the piping structure can be simplified, and the special effect that the piping construction work can be performed extremely easily and quickly has been obtained.

Further, since the spherical bulging portion of the bend is fitted onto the spherical concave portion of the joint body so as to be slidable on the spherical surface, the two pipes to be connected are connected by appropriately swinging them. The pipes can be connected continuously and at wide angles, and the connected pipes that are misaligned can be easily connected, and if external force is applied to the joint body due to ground subsidence, etc. As a result of oscillating, the applied external force is favorably absorbed, and as a result, it is possible to avoid the inconvenience of leaking the circulating fluid.

Further, by preliminarily connecting the casing equipped with the ring body to the joint body so that the packing does not come into pressure contact with the bend, the joint body can be freely shaken with respect to the bend without load from the packing. It has a unique effect that it can be moved and can greatly contribute to the convenience of piping work.

Further, the swingable pipe joint according to the present invention has an advantage that it can be manufactured at low cost and the assembling and disassembling work can be simplified because the whole structure is very simple and the number of parts is small.

[Brief description of drawings]

FIG. 1 is a plan view of a half section showing an embodiment of the present invention.

FIG. 2 is a plan view of a half-cut section showing a usage state.

FIG. 3 is a half-cut cross-sectional plan view showing a usage state.

[Explanation of symbols]

 1 ... Bend 2 ... Spherical bulge part 3 ... Joint body 4 ... Spherical concave part 5 ... Flange 5a ... Through hole 6 ... Packing 8 ... Casing 9 ... Flange 9a ... Flange 10 ... Bolt 11 ... Nut 13 ... Space part 14 ... Ring Body 15 ... spherical surface

Claims (3)

[Claims] 1. A bend (1) having spherical bulging portions (2) formed at both ends, and a spherical concave portion which is spherically slidably fitted on the spherical bulging portion (2) of the bend (1). (4) A pair of joint bodies (3) formed at one end, and packings interposed between the inner peripheral surface of the joint body (3) and the spherical bulging portion (2) of the bend (1). (6)
An annular casing (8) into which the bend (1) is inserted and connected to one end of the joint body (3);
The bend is removably mounted in a space (13) formed between the inner peripheral surface of (8) and the spherical bulging portion (2) of the bend (1).
A swingable pipe joint comprising a spherical body (1) and a ring body (14) having a spherically slidable spherical surface portion (15) formed on an inner peripheral surface thereof. 2. The swingable pipe joint according to claim 1, wherein the ring body (14) is composed of a plurality of arcuate pieces. 3. A flange (5) having a plurality of through holes (5a) is provided on one end side of the joint body (3), and a plurality of through holes (9a) are provided on the outer peripheral surface of the casing (8). Having flange
The swingable pipe joint according to claim 1 or 2, wherein the nut (11) is screwed onto the bolt (10) which is provided with (9) and is inserted into each through hole (5a), (9a). .