JP3037380U - Pipe fittings - Google Patents

Abstract

(57) [Summary] [Purpose] To enable easy maintenance and inspection without the need for special tools. [Structure] A taper flange portion 2 is integrally formed on one short pipe portion 1, a taper flange portion 4 is integrally formed on the other short pipe portion 3, and female screw portions 5, 6 are formed on both short pipe portions 1, 3. In a state in which the connecting pipe 7 and the connected pipe 8 are screwed into and connected to the respective female screw portions 5 and 6, both taper flange portions 2 and 4 are opposed to each other, and the airtight packing 9 is interposed in the opposed gap. The taper flange portions 2 and 4 are detachably clamped by the wing nut fastening type clamp member 10.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a pipe joint for connecting end portions of pipes made of metal pipe or the like to each other.

[0002]

[Prior art and its problems]

 As a conventional pipe joint for connecting the ends of this type of pipe to each other, there is a union joint as shown in FIG. In this conventional union joint, a male screw portion 21 is formed at an end portion of a connecting pipe 20, and an annular engaging convex portion 23 is formed at an outer periphery of an end portion of a connected pipe 22 facing the connecting pipe 20, and the engaging portion is formed. A nut 25 having an engaged convex portion 24 that engages with the convex portion 23 formed at the end of the inner peripheral surface is fitted to the end portion of the connected pipe 22 to connect the engaged convex portion 24 to the connected pipe. 22 is rotatably engaged with the engaging convex portion 23 of the pipe 22, and the nut 25 is screwed into the male screw portion 21 of the connecting pipe 20 with the airtight packing 26 interposed in the facing gap between the pipes 20 and 22. Both pipes 20 and 22 are attracted to each other, so that the connected pipe 22 is airtightly connected to the connecting pipe 20 by the nut 25.

With this structure, not only a dedicated tool for rotating the nut 25 is required at the time of disassembling and assembling for maintenance and inspection, but also the nut 25 is permanently attached to the pipe 22 to be connected. Therefore, it may be difficult to perform maintenance and inspection because the nut 20 interferes.

The present invention has been made in view of the above problems, and an object of the present invention is to propose a pipe joint that does not require any special tool and can be easily inspected. It is a thing.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the pipe joint according to claim 1 of the present invention has a tapered flange portion 2 formed integrally with one short pipe portion 1 and the other short pipe portion, if indicated by reference numerals. A tapered flange portion 4 is integrally formed on the portion 3, and female screw portions 5 and 6 are formed on both the short pipe portions 1 and 3, respectively, and the connecting pipe 7 and the connected pipe 8 are screwed into the respective female screw portions 5 and 6. Both taper flange parts 2 and 4 are opposed to each other, and the airtight packing 9 is interposed in the opposed gap, and the taper flange parts 2 and 4 are detachably clamped by the wing nut fastening type clamp member 10. The configuration is such that

[0006]

[Action]

 The pipe joint of the present invention uses a wing nut fastening type clamp member 10 which is a separate body from the both taper flange portions 2 and 4, and the both taper flange portions 2 and 4 are fastened manually by the wing nut 12. Therefore, it is possible to easily and easily connect or disconnect the connecting pipe 7 and the connected pipe 8 connected to both the short pipe portions 1 and 3 without using any special tool.

Further, since the inner diameters of the wing nut fastening type clamp member 10 and the both short pipe portions 1 and 3 and the female screw portions 5 and 6 thereof may be existing standards, existing pipes 7 and 8 connected thereto are existing. Since the market standard products can be used as they are, they have sufficient replacement compatibility.

[0008]

【Example】

 An embodiment will be described with reference to the drawings. In FIG. 1, one end portion of one short tube portion 1 is integrally formed with a tapered flange portion 2 having a tapered surface 2a and protruding in an annular shape on the outer peripheral side thereof. Similarly, a taper flange portion 4 having a tapered surface 4a is integrally formed on the short pipe portion 3 of each of the short pipe portions 3, and female screw portions 5 and 6 are formed on the inner peripheral surfaces of both the short pipe portions 1 and 3, respectively. A state in which the connecting pipe 7 and the connected pipe 8 are screwed into and connected to 5 and 6, the two taper flange portions 2 and 4 are opposed to each other, and an airtight packing 9 made of tetraboride resin or silicon is interposed in the opposed gap. 2 shows a state in which both taper flange portions 2 and 4 are detachably clamped by the wing nut fastening type clamp member 10.

FIG. 2 shows a clamped state of the clamp member 10 with respect to both flange portions 2 and 4. Three clamp pieces 10a, 10b and 10c are pivotally connected to each other in a substantially annular shape, and the ends thereof are connected to each other. The bolt member 11 is pivotally supported, and the wing nut 12 is screwed into the bolt member 11. By screwing the wing nut 12 into the bolt member 11, the clamp pieces 10a, 10b, 10c are attached to the tapered flange portions 2, 4. The tapered surfaces 2a and 4a bite into each other to exert a wedge action, and the tapered flange portions 2 and 4 are strongly connected by the clamp member 10.

In order to disassemble the connecting pipe 7 from the connected pipe 8 for maintenance or management, the wing nut 12 of the clamp member 10 is simply loosened by hand, and the clamp member 10 is attached to both taper flange portions. Both pipes 7 and 8 can be disassembled by detaching from the pipes 2 and 4, so that maintenance and management of both pipes 7 and 8 can be performed easily and easily without using any special tool.

[0011]

[Effect of the invention]

 According to the present invention, the wing nut fastening type clamp member which is separate from the both taper flanges is used, and the both taper flanges are fastened manually by the wing nut, so that no special tool is required. The connecting pipe and the connected pipe connected to both the short pipe portions can be easily and easily connected to each other or separated from each other.

Also, since the inner diameter of the wing nut fastening type clamp member and both short pipe parts and the female screw part thereof may be existing standards, the existing market standard products should be used for the pipes connected to them. Therefore, it has sufficient exchange compatibility.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a vertical sectional front view of a conventional technique.

[Explanation of symbols]

 1 Short Pipe Part 2 Tapered Flange Part 3 Short Pipe Part 4 Tapered Flange Part 5 Female Threaded Part 6 Female Threaded Part 7 Connection Pipe 8 Connected Pipe 9 Airtight Packing 10 Bow Nut Fastening Clamp Member 11 Nut Member 12 Wing Nut

Claims (1)

[Utility model registration claims] 1. A taper flange portion is integrally formed on one of the short pipe portions, a taper flange portion is integrally formed on the other short pipe portion, and female screw portions are formed on both of the short pipe portions, and respective female screw portions are formed. Connect the connecting pipe and the connected pipe by screwing them together, and make both taper flange parts face each other, and with the airtight packing interposed in the opposing gap, detachably clamp both taper flange parts with the wing nut fastening type clamp member. Pipe fittings that are designed to do.