JPH0949592A - Joint device for pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To repair the damage of a connection block and screw part formed on a screw cylinder by disassembling a connection cylinder, an idle coupling and the screw cylinder freely by the screwing off of a connection nut. SOLUTION: In the assembly of a pipe joint, at first a screw cylinder 10 is fitted on the outer periphery surface of an idle coupling 4 and the coming out of the screw cylinder 10 is stopped by screwing a connection nut 8 to the idle coupling 4. Then, the idle coupling 4 is joined to a connection cylinder 1 by screwing the connection nut 8 to the connection cylinder 1. At its use time, a connection ring with a screw fixed on the end of a pipe is engaged in a connection block 15 and the screw in the connection ring is screwed to the tightening screw 11 of the screw cylinder 10 and connected by the tightening of a handle 13. When the connection block 15 and the tightening screw 11 are disposed, the connection nut 8 is screwed off from the connection cylinder 1 and further, the connection nut 8 is also screwed off from the idle coupling 4. Thereby, each part of the joint is disassembled and a required repair and a part exchange can be carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a fixed cylinder attached to an inlet of a tank or the like or fixed with a pipe, and a screw cylinder rotating with respect to the fixed cylinder, and the other pipe is attached to the screw cylinder. The present invention relates to a pipe joint device for detachably connecting the inlet or one pipe and the other pipe by connecting and tightening with a screw.

[0002]

2. Description of the Related Art Conventionally, there has been a fixed cylinder attached to an inlet of a tank or the like or having a pipe fixed thereto, and a screw cylinder rotating with respect to the fixed cylinder, and the other pipe is connected to the screw cylinder. A pipe joint device for detachably connecting the inlet or one pipe and the other pipe by tightening with a screw is known. In such a conventionally known pipe joint device, the screw cylinder and the connecting cylinder are extremely strongly connected by a ring, and it is difficult or impossible to separate them from each other. For this reason, in order to connect the connecting ring attached to the end of the pipe, if the connecting block or screw part formed on the screw cylinder is damaged by the strong tightening force of the handle, repair is difficult or impossible. There was a drawback that was.

[0003]

SUMMARY OF THE INVENTION According to the present invention, a threaded tube and a connecting tube can be easily separated from each other, and a connecting block formed on the threaded tube or a pipe capable of repairing a damage of a threaded portion can be repaired. It is intended to provide a joint device.

[0004]

Means for Solving the Problems In order to solve the above-mentioned problems, a means adopted by the present invention is a connecting cylinder which can be connected to an inlet of a tank, a pipe, etc., and an idle coupling which is joined to the connecting cylinder. And a screw cylinder provided with a handle rotatably attached to the outer peripheral surface of the idle coupling in a retaining state, and a connection nut screwed to the connection cylinder and the idle coupling to connect the two together. It is characterized in that the connection cylinder, the idle coupling, and the screw cylinder can be disassembled by screwing.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the drawings. In the figure
Reference numeral (1) is a connecting cylinder, and in the illustrated embodiment, a flange portion (2) for fixing to the inlet of the tank is integrally fixed. However, it goes without saying that instead of the flange portion, a pipe may be attached to the connecting cylinder (1) to connect the pipes. A screw (3) is formed on the outer peripheral surface of the connecting cylinder (1). An idle coupling (4) having the same inner diameter is brought into contact with and joined to the upper part of the connecting cylinder (1). The idle coupling (4) and the connecting cylinder (1) are joined together by a butting step portion (5) engaging with each other while preventing relative displacement in the diametrical direction, and the butting surfaces of both are O-ring ( It is sealed with 6). The lower outer peripheral surface of the idle coupling (4) is formed to have a slightly smaller diameter than the connecting cylinder (1), and a screw (7) is formed on the outer peripheral surface of the small diameter. (8) is a connecting cylinder (1) and an idle coupling
A connecting nut that is screwed onto the screws (3) and (7) on the outer peripheral surface of (4) and connects the connecting cylinder (1) and the idle coupling (4). Gasket on top of idle coupling (4)
(9) is provided to seal between the connecting ring of the pipe to be connected.

Reference numeral (10) is a screw cylinder having a tightening screw (11) formed on the outer peripheral surface thereof and is rotatably mounted on the outer peripheral surface of the idle coupling (4). The screw cylinder (10) is a flange-shaped step (1) formed on the outer peripheral surface of the idle coupling (4).
It is engaged with 2) and is prevented from coming out. Further, the lower part of the screw cylinder (10) contacts the connecting nut (8) to prevent the screw nut (10) from falling downward. That is, the screw cylinder (10) is held between the flange-shaped step portion (12) and the connecting nut (8), and is only allowed to rotate on the outer peripheral surface of the idle coupling (4). Two tightening screws (11) are formed on the outer peripheral surface of the screw cylinder so as to face each other in the diametrical direction, and the screw thread is formed by an extremely gentle spiral screw. A cross section where a handle (13) is integrally formed on the outer peripheral surface orthogonal to the tightening screw (11) of the screw cylinder (10), and a pipe connecting ring is engaged with the base of the handle (13).

[Outside 1] A connecting block (15) having a groove (14) is integrally formed.

To assemble, first, the screw cylinder (10) is inserted into the outer peripheral surface of the idle coupling (4) while being engaged with the flange-like stepped portion (14), and the connecting nut (8) is attached to the idle coupling (4). ) To prevent the screw cylinder (10) from coming off. Next, the connecting nut (8) is screwed onto the connecting cylinder (1) and tightened to connect the idle coupling (4) and the connecting cylinder (1) to complete the assembly. When using, insert the threaded connecting ring fixed to the end of the pipe into the connecting block, screw the inner thread of the connecting ring into the tightening screw (11) of the screw cylinder, and then handle (13).
Rotate and tighten to connect. If the connecting block (15) or the tightening screw (11) is damaged and needs repair, rotate the connecting nut (8) to unscrew it from the connecting tube (1), and then idle the connecting nut (8). Also unscrew from the coupling (4). As a result, the connection cylinder (1), the idle coupling (4), the connection nut (8) and the screw cylinder (10) are disassembled, and necessary repairs and replacement of parts can be performed.

[0008]

As described above, according to the present invention, since the entire nut can be easily disassembled by unscrewing the connecting nut, there is an advantage that necessary repair and replacement of parts can be performed.

[Brief description of drawings]

FIG. 1 is a front view in which a part is sectioned.

FIG. 2 is an exploded perspective view

[Explanation of symbols]

 (1) Connection tube (2) Flange section (3) Screw (4) Idle coupling (5) Butt step section (6) O-ring (7) Screw (8) Connection nut (9) Gasket (10) Screw tube ( 11) Tightening screw (12) Flange step (13) Handle (14) Cross section

[Outer 1] Groove (15) Connection block

Claims (1)

[Claims] 1. A connecting cylinder that can be connected to an injection port, a pipe, etc. of a tank, an idle coupling joined to the connecting cylinder, and an outer peripheral surface of the idle coupling that is rotatably mounted in a retaining state. It consists of a screw cylinder with a handle and a connection nut that is screwed into the connection cylinder and the idle coupling to connect them, and the connection cylinder, idle coupling, and screw cylinder can be disassembled by unscrewing the connection nut. And pipe fitting device.