CN2328847Y

CN2328847Y - Pipeline joint

Info

Publication number: CN2328847Y
Application number: CN 97229150
Authority: CN
Inventors: 汪惠生
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-17
Filing date: 1997-10-17
Publication date: 1999-07-14
Anticipated expiration: 2007-10-17

Abstract

The utility model provides a quick pipeline joint which is mainly composed of a joint body with an external thread, a pressing nut, and a sealing sleeve, wherein, the inner surface of the joint body is a conical surface; the pressing nut is provided with an internal thread; the outer surface of the sealing sleeve is a conical surface matched with the inner surface of the joint body. A straight pipe is inserted in a joint in installation, and the pressing nut is rotated. The sealing sleeve is forcibly drawn in to lock the straight pipe. The effect of quick connection and positive sealing is reached, and labor strength is relieved. The quick pipeline joint is particularly suited for the installation of various water pipelines, steam pipelines, and gas pipelines.

Description

A kind of pipe coupling

The utility model relates to a kind of pipe coupling, relates in particular to a kind of fast-assembling pipe coupling.

At present, in the drainage pipeline of construction engineering was installed, dock was adopted in the most frequently used pipe coupling, and the joint of cast iron tube pipe fitting adopts concrete to be connected sealing with straight tube; The joint of U-PVC pipe fitting (duroplasts pipe fitting) then adopts the gluing installation of accepting.When installing, these two kinds of pipe couplings waste time and energy, suitable difficulty, and can only once using, and easy-maintaining not, sealing is poor, easy to leak.In addition, bigbore pipe coupling in delivery (pipe) line adopts flange to connect, and small-bore pipe coupling need be used filament plate tapping on straight tube, twines flax silk or raw meal belt, connects with pipe fitting again, installs also quite effort, has only the professional workforce to operate.

The purpose of this utility model provide a kind of simple in structure, mounting or dismounting fast, good seal performance, easy-maintaining, can lock the pipe coupling of access tube again.

In order to achieve the above object, pipe coupling of the present utility model is formed by having externally threaded adapter body, gland nut, stuffing box gland, and the adapter body internal surface is a conical surface; Gland nut has internal thread; The stuffing box gland outer surface is a conical surface, matches with the inner conical surface of adapter body.

After adopting such structure, because adapter body has outside thread, gland nut has internal thread, and straight tube does not need tapping during installation, need not carry heavy filament plate, need not twine flax silk or raw meal belt, only need rotatably compress nut, the male cone (strobilus masculinus) of stuffing box gland and the inner conical surface of adapter body cooperatively interact and straight tube are tightly pushed down, and reach the effect of quick connection, positive confinement, thereby alleviated labor intensity, improved working efficiency.Again because the inner conical surface of adapter body and the male cone (strobilus masculinus) of stuffing box gland all are the big conical surfaces, thereby coupling mechanism force and sealing have been increased.

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is the sectional view of the utility model pipe coupling embodiment.

Fig. 2 is the sectional view of the utility model pipe coupling Placement.

Fig. 3 is the three-way pipe schematic representation with the utility model pipe coupling.

Fig. 4 is the bend pipe schematic representation with the utility model pipe coupling.

By pipe coupling shown in Figure 1, to form by adapter body 3, gland nut 1, stuffing box gland 2, adapter body 3 is a tubulose, and interior is through hole, and internal surface is a conical surface, on its outer wall outside thread is arranged; Gland nut 1 has internal thread, is complementary with the outside thread of adapter body 3; Stuffing box gland 2 places in the adapter body 3, and its outer surface is a conical surface, and matches with the inner conical surface of adapter body 3.Gland nut 1 has an end face, and its end face bore equates with the internal diameter of stuffing box gland 2; And for example shown in Figure 2, the internal diameter of stuffing box gland 2 equates with the external diameter of straight tube 4.

As shown in Figure 2, during installation, stuffing box gland 2 is placed in the adapter body 3, cover gland nut 1, again straight tube 4 is inserted, rotatably compress nut 1, up to tightening, the interior table top of gland nut is pressed to the big end surface of stuffing box gland 2, and the male cone (strobilus masculinus) of stuffing box gland 2 and the inner conical surface of adapter body 3 are combined closely, at this moment stuffing box gland by force in tighten tight pinning straight tube 4, thereby finish the connection of pipe coupling.

As shown in Figure 3, Figure 4, pipe coupling of the present utility model can be used on the various pipe fittings such as three-way pipe, bend pipe equally, and this pipe coupling is not only applicable to waterpipe and installs, and also is applicable to the installation of steam pipeline, gas pipe line.

Claims

1, a kind of pipe coupling is characterized in that: it is formed by having externally threaded adapter body (3), gland nut (1), stuffing box gland (2), and adapter body (3) internal surface is a conical surface; Gland nut (1) has internal thread; Stuffing box gland (2) outer surface is a conical surface, matches with the inner conical surface of adapter body (3).

2, pipe coupling according to claim 1 is characterized in that: this gland nut (1) has an end face, and its end face bore equates with the internal diameter of stuffing box gland (2) and the external diameter of straight tube (4).