CN2208150Y

CN2208150Y - Brake sealing non-screwed pipe joint

Info

Publication number: CN2208150Y
Application number: CN 94223264
Authority: CN
Inventors: 俞伯兴; 陈联芝
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-29
Filing date: 1994-09-29
Publication date: 1995-09-20
Anticipated expiration: 2004-09-29

Abstract

The utility model relates to a brake sealing non-screwed pipe joint, comprising upper and lower semicircle pipes, and a radical sealing ring and an axial sealing gasket which are pressed tightly by the upper and the lower semicircle pipes. The brake sealing non-screwed pipe joint is characterized in that the brake sealing non-screwed pipe joint also comprises an outer press ring which is pressed tightly on a peripheral wall on the corresponding end of two connected pipes by a fastening connector; pin holes are matched and drilled on the outer press ring and the pipe wall of a connection pipe which are pressed tightly; two positioning pins are respectively fixedly matched in the pin holes. As the positioning pins can effectively prevent the connection pipe to rotate and axially float corresponding to the sealing ring, the long-term reliable seal of the connection pipe can be realized.

Description

Brake sealing non-screwed pipe joint

The utility model relates to a kind of pipe joint, particularly relates to a kind of screw-thread-free pipe joint.

The claimant discloses a kind of screw-thread-free pipe joint in Chinese patent ZL93226737.8, it be use, lower semicircle pipe connects the structure compress radial direction seal ring and axial gasket and replaces traditional screw thread straight connector and union used in pipeline is connected, though have easy for installation, be convenient to adjust the advantage that pipe range size and elimination are expanded with heat and contract with cold and influenced.But connecting tube wherein still can circumferentially rotate and axial float relative to seal ring and the generation of upper and lower semicircle pipe, thereby also can have influence on the reliability of sealing.

The purpose of this utility model provides a kind of connecting tube that prevents relative to seal ring circumferential rotated and thereby axial float has good sealing reliability screw-thread-free pipe joint.

Above-mentioned purpose of the present utility model realizes by following proposal.Thereby thisly realize braking the screw-thread-free pipe joint that reaches reliable sealing, comprise the upper and lower semicircle pipe that removably is fastenedly connected relatively, respectively radial direction seal ring and the axial gasket that compresses by two end boss of described upper and lower semicircle pipe and relative separating surface; Be characterized in, comprise that also one is pressed on outer trim ring on the two connected tube opposite end periphery walls with fastening connection piece.

The internal diameter of described outer trim ring is slightly larger than the connecting tube external diameter, forms an opening on its perisporium, and the opposite end of opening is extended two abreast along the horizontal diameter direction respectively and connected lug, is respectively equipped with the relative through hole of coaxial line on each relative lug; Described fastening connection piece comprises the bolt that is plugged in the described relative through hole and joins the nut of tightening with the bolt spiral shell; Join dividually with a determining deviation on trim ring and the two connecting tube opposite end perisporiums that compressed by it outside and be drilled with two pin-and-holes, two locating studs are provided in respectively in the described pin-and-hole.

Adopt said structure of the present utility model, because outer trim ring is pressed on the two connecting tube periphery walls and by locating stud and locatees, therefore can prevent the circumferential rotation and the axial float of connecting tube effectively, keep the fixed position between connecting tube and radial direction seal ring and last lower semicircle pipe to concern thus to guarantee the reliable sealing of connecting tube.

Now also specify characteristics of the present utility model in conjunction with the accompanying drawings by a preferred embodiment of the present utility model.

But Fig. 1 is screw-thread-free pipe joint one embodiment's of a braking sealing of the present utility model main sectional view;

Fig. 2 is the sectional elevation of being got along A-A cutting line among Fig. 1;

Fig. 3 is the plan view of Fig. 1;

Fig. 4 is the plan view that the footpath office of the outer trim ring in embodiment illustrated in fig. 1 is cutd open;

Fig. 5 is the sectional view of being got along B-B cutting line among Fig. 4.

As illustrated in fig. 1 and 2, screw-thread-free pipe joint of the present utility model comprises: by fixed connecting piece such as bolt 12 and the relative upper and

lower semicircle pipe

4,7 that nut 13 removably is fastenedly connected, be formed with a relative radial flange 3 respectively on the two ends separately of upper and lower semicircle pipe; Two radial direction seal rings 2 seal respectively and are embedded between the periphery wall and corresponding flange 3 of connected

tube

1,6; A pair of axial gasket 17 is oppositely arranged between two groups of relative interfaces of upper and

lower semicircle pipe

4,7 compactedly; One outer trim ring 11(sees Fig. 4,5) its internal diameter is slightly larger than connected tube (1,6) external diameter, thereby the direction that is parallel to its diameter in its perisporium upper edge parallel interval is respectively turned up the soil and is stretched out two and axially connect lugs 14 and form an opening 18, be respectively equipped with the through hole of a coaxial line on two relative lugs, two bolts plug by relative through hole and tighten outer trim ring 11 is pressed on the periphery wall that is connected the opposite end of connecting tube with nut 9 '; Described be connected the opposite end and outside separately be equipped with two pin-and-holes, 16, two locating studs 10 respectively with suitable spacing on the perisporium of trim ring and be provided in respectively in the described pin-and-hole 16.

Claims

But 1, a kind of screw-thread-free pipe joint of braking sealing, comprise the upper and lower semicircle pipe that removably is fastenedly connected relatively, radial direction seal ring and the axial gasket that compresses by two end boss of described upper and lower semicircle pipe and relative separating surface respectively, it is characterized in that it comprises that also one is pressed on outer trim ring on the two connected tube opposite end periphery walls with fastening connection piece.
But 2, the screw-thread-free pipe joint of braking sealing as claimed in claim 1, it is characterized in that, the internal diameter of described outer trim ring is slightly larger than the connecting tube external diameter, thereby the direction that is parallel to its diameter in its perisporium upper edge parallel interval is respectively turned up the soil and is stretched out two and axially connect lugs and form an opening, is provided with the through hole of a coaxial line on two relative lugs; Described fastening connection piece comprises the bolt that is plugged in the described relative through hole and joins the nut of tightening with the bolt spiral shell.
But 3, the screw-thread-free pipe joint of braking sealing as claimed in claim 1 or 2, it is characterized in that, join dividually with a determining deviation on trim ring and the two connecting tube opposite end perisporiums that compressed by it outside described and be drilled with two pin-and-holes, two locating studs fixedly are provided in the described pin-and-hole respectively.