CN2101159U

CN2101159U - Quick pipe joint

Info

Publication number: CN2101159U
Application number: CN 91218371
Authority: CN
Inventors: 边璞
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-07-06
Filing date: 1991-07-06
Publication date: 1992-04-08

Abstract

The utility model relates to a pipe joint capable of connecting two connection pipes without tapping the connection pipes. The pipe joint is composed of a short pipe, a pair of sealing rings, an anti-moving ring and a clamping bush. While the pipes are being connected, two being connected pipes are respectively inserted into the short pipe through both ends of the short pipe. In the process of tightening the clamping bush and the short pipe, the cone slope on the clamping bush touches with and presses the cone slope on the diameter variable anti-moving ring with open slots. On one hand, the sealing rings are pressed to prevent liquid leakage; on the other hand, the prominence on the anti-moving ring bites with the external wall of the being connected pipe tightly and quickly, and accordingly large axial tension can be endured.

Description

Quick pipe joint

The utility model belongs to pipe connection device.

Chinese patent literature CN87200335U discloses and a kind ofly need not carry out tapping processing, the just pipe joint that two tubes can be coupled together to connecting tube.This joint is by connecting tube and two attachment caps, and two linings and safety ring, seal ring are formed.During adapter, the attachment cap that directly will be enclosed within on the pipe tightens on connecting tube, utilize to connect the pipe cap tapering part to the pressure that lining and safety ring, seal ring produce, connected pipe is coupled together under the situation of not leaking, have the saving of labor, save time, advantage easily.The distinct disadvantage of this pipe joint is that attachment cap is little to the vertical pressure of lining, and lining and also less by the frictional force of adapter outer wall, and to making pipe joint be difficult to bear larger axis to pulling force, connecting mechanical strength can not guarantee, influences its using scope.

The purpose of this utility model is to provide a kind of larger axis that can bear to pulling force, needn't carry out the pipe joint of tapping processing again to connected tube.

Structure of the present utility model is as follows: at the two ends of a short tube, be symmetrical arranged a pair of seal ring successively, pair of inner wall has a plurality of anti-skidding convex partss, but outer wall has a tapered slope and with the reducing anti-back ring and a pair of can the tightening respectively at the short tube two ends of opening slot, and in tightening process, can also correspondingly be provided with a tapered slope on the clamping sleeve along the axially movable clamping sleeve of short tube.When this quick coupling uses, two velamen connecting tubes are inserted short tube from the two ends of short tube respectively, clamping sleeve and short tube are tightened, in the process that tightens, corresponding tapered slope is touched mutually and is compressed on tapered slope on the clamping sleeve and the anti-back ring, this makes the seal ring compressive deformation on the one hand and prevents leak of liquid effectively, add radial pressure to the anti-back circulating application on the other hand, make on the anti-back ring convex parts firmly with the outer wall interlock of connected tube, thereby this pipe joint can bear big axial tension, has realized the purpose of this utility model.

Compare with prior art, advantage of the present utility model is the linking intensity height, can use in a big way.

Fig. 1 looks part sectioned view for embodiment 1 master.

Fig. 2 looks part sectioned view for the master of anti-back ring among the embodiment 1 and 2.

Fig. 3 is the plan view of anti-back ring in embodiment 1 and 2.

Fig. 4 is the partial enlarged drawing at " I " position among Fig. 2.

Fig. 5 looks part sectioned view for embodiment 2 master.

Embodiment 1: see Fig. 1-4.The outer wall of short tube 4 has the spiral shell mosquito and a bulge loop is arranged in the middle part of the inwall.Seal ring 3 and 6 is made by rubber.But the anti-skidding convex parts on band opening slot reducing

anti-back ring

2 and 7 inwalls is a dentation.Clamping sleeve is that pair of inner wall has screw thread, thus the nut 1 and 5 that can be respectively tightens with short tube 4.Nut inner wall and anti-back ring outer wall are provided with the tapered slope that can work in coordination.

Embodiment 2: see Fig. 5.Inwall has the two ends of the short tube 11 of a bulge loop to be welded with a flange plate 9 respectively.Clamping sleeve is the flange plate 8 of the longer flange sleeve of a pair of band.End at flange sleeve is provided with tapered slope.Seal ring and anti-back ring are with embodiment 1.By nut 10

clamp flange dishes

8 and 9, flange sleeve and short tube 11 are tightened, allow anti-back ring and seal ring work respectively to prevent that pipe fitting from coming off and prevent seepage.The pipe connection device of present embodiment is applicable to bigbore connected tube.

Claims

1, a kind of pipe joint, by a short tube, a pair of seal ring, a pair of anti-back ring, a pair of can tightening respectively at the short tube two ends, and in tightening process, can form along the axially movable clamping sleeve of short tube, it is characterized in that: but the anti-back ring is the reducing ring of band opening slot, and the inwall of anti-back ring has a plurality of anti-skidding convex partss and outer wall that one tapered slope is arranged, the also corresponding tapered slope that is provided with on the clamping sleeve.

2, pipe joint as claimed in claim 1 is characterized in that: the outer wall of short tube 4 has screw thread, and clamping sleeve is the nut 1 and 5 that inwall has the spiral shell mosquito, and nut inner wall and anti-back ring outer wall are provided with the tapered slope that can work in coordination.

3, pipe joint as claimed in claim 1 is characterized in that: the two ends of short tube 11 are welded with a flange plate 9 respectively, and clamping sleeve is the flange plate 8 of the longer flange sleeve of a pair of band, is provided with tapered slope in the end of flange sleeve, by nut 10 clamp flange dishes 8 and 9.

4, as claim 2 and 3 described pipe joints, it is characterized in that the anti-skidding convex parts on the anti-back ring inwall is a dentation, seal ring is made by rubber.