JPS60201186A - Pipe joint - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pipe joint for connecting cylindrical pipes that serve as fluid flow paths.

[Prior art and its problems]

As shown in FIG. 1, a conventional pipe joint has a front ferrule 3 with a shape that matches a part of the taper of the tightening edge 1a of the joint body 1 between the joint body 1 and the cap 2, and its 9ij function as a ferrule 3. By disposing a rear ferrule 4 to assist and tightening the cap 2 to the tightening edge 1a, the ferrule 3 bites into the cylindrical tube 5 inserted into the tightening edge 1a of the joint body 1 and tightens the outer circumference of the cylindrical tube 5. The taper portions are adapted to each other to seal with the joint body 1, and a sufficient effect is obtained.

However, since the cylindrical tube 5 is inserted into the joint body 1, when the first part 6, second part 7, and third part 8 are connected as shown in FIG. The second one placed in the center
The disadvantage was that it was very difficult to remove the parts 7.

[Purpose of the invention]

An object of the present invention is to provide a pipe joint that allows parts arranged between the pipe joints to be easily removed and assembled without using any special tools.

An adapter supporting the edge of a cylindrical tube with a sealing mechanism on its outer circumferential surface is installed on the end face of the through hole opened in the body via a seal, and a cap wrapped around the cylindrical tube is attached to the fitting body. This pipe joint is characterized by tightening and sealing between the joint body and the adapter and between the cylindrical pipe and the adapter.

[Explanation of Examples]

Hereinafter, an embodiment of the present invention will be described with reference to FIG.

The pipe joint of the present invention includes a pipe joint main body 10 and a pipe joint main body I.
An annular sealing material 12, an adager 13, and a front ferrule 14 are arranged and accommodated in the axial direction within a space formed between the gap 11 that is threadedly connected to the pipe joint body 10 and the cap 11. and a rear ferrule 15. The pipe joint body IO has a 3g through hole 17 that approximately matches the inner diameter of the cylindrical pipe 16 to be connected, and the sealing material 12 is attached to the opening edge of the hole 17. A stepped portion 18 supporting the insertion end of the cylindrical tube 16 is provided in the center hole of the adapter 13, the negative side of which is a flat surface that is in close contact with the seal paulownia 12, and the other side of the front ferrule l/1. and a tapered hole into which the rear rim 15 is fitted. The front ferrule 14 and rear ferrule 15 are the same as before.
The ferrule 14, which is attached to the circumferential surface of the cylindrical tube 16 and is unscrewed along the tapered hole, is inserted into the adapter 13, and after receiving the inner surface, the ferrule 15 is supported on the back side of the adapter 13, and the cap 11 is tightened. Adapter 1 for Masterpiece by
3 and seals the outer periphery of the cylindrical tube 1G supported by the stepped portion 18 in the adapter 13, and also presses the adapter 13 onto the sealing material 12.

That is, the joint body 10 is sandwiched, the adapter 13 is applied to both ends of the joint body 10 via the sealing material 12, and the front ferrule 1 is
4 and the cylindrical tube 16 to which the rear phenol 15 is attached are inserted into the adapter 13, their ends are supported by the stepped portion 18, and the camp 1 is fitted onto the outer periphery of the cylindrical tube]6 in advance.
When (1) is tightened to the joint body lO, the sealing material 12, adapter 13, front ferrule 149, and rear ferrule 15 are deformed in a direction in which they come into close contact with each other, and the front ferrule 14. is in close contact with the cylindrical tube 16 to seal the outer periphery of the cylinder Qlr;
Further, the adapter 13 has a tapered part that is in close contact with each other, and the adapter 13 and the pipe fitting body 10 have a sealing material 1.
The fluid in the cylindrical tube 6 is prevented from flowing out by being in close contact with both ends of the cylindrical tube 2. When removing the cylindrical tube 16 from the pipe joint, when the cap 11 is loosened, the cylindrical tube 16 and the front ferrule 141 and rear ferrule 5 that have bitten into the cylindrical tube 16 are removed together, and the adapter 13 and sealing material 12 are removed. Each can be removed individually.

〔Effect of the invention〕

A pipe fitting according to the invention can be constructed, for example, in three parts 6 as shown in FIG.
, 7.8, when the center part 7 is not removed, the cap can be loosened and the part 7 can be removed in a direction perpendicular to the flow path, making it possible to remove it at the seal part. This has the effect that parts connected between pipe joints can be easily removed and assembled without using special tools.

In the above embodiment, a pipe joint using d, a front ferrule, and a rear ferrule to connect two pipes was explained, but the same effect can be achieved even if one O-link is used instead of two ferrules. This effect can be obtained, and it can also be applied to connections between parts and pipes where the pipe fitting body is a part of the part.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a conventional pipe joint, FIG. 2 is a cross-sectional view showing an example of connecting parts using a pipe joint, and FIG. 3 is a cross-sectional view showing an embodiment of a pipe joint according to the present invention. 10...Joint body, 11...Cap, 12...Sealing material, 13 Pa adapter, 140. Front ferrule, 15
Rear ferrule, 16 ・Cylindrical tube,] 8 Stepped part. Patent applicant: NEC Corporation Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] (1) In a pipe joint used to connect cylindrical pipes, an adapter is installed on the end face of a through hole opened in the joint body via a sealing material to support the 41 edge of a cylindrical pipe with a sealing mechanism on the outer peripheral surface. A pipe joint characterized in that a cap mounted on the cylindrical pipe is tightened onto the joint body to seal between the joint body and the adapter and between the cylindrical pipe and the adapter.