CN215215315U

CN215215315U - Wall-protecting type half joint

Info

Publication number: CN215215315U
Application number: CN202121491514.3U
Authority: CN
Inventors: 焦祥静; 刘洁
Original assignee: ANHUI TONGFA EQUIPMENT CO LTD
Current assignee: ANHUI TONGFA EQUIPMENT CO LTD
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2021-12-17
Anticipated expiration: 2031-07-02

Abstract

The utility model provides a dado type ha fujie, two ha fujie halfbodies enclose to close and constitute ha fujie formula tube coupling, and the straight recess, the arc recess that axial side and tip circumference of hafujie halfbody were arranged are used for imbedding the sealing member halfbody, and the arc recess outside of hafujie halfbody is provided with curved terminal surface dado. When the half joint expands outwards to generate arch deformation in the scheme, the end face protection walls 17 at two ends can effectively abut against the pipeline to form a fulcrum, the pipeline further bears pressure instead of the sealing gasket, and the sealing gasket is prevented from being extruded and deformed due to the fact that the sealing gasket is further deformed and extruded by the half joint.

Description

Wall-protecting type half joint

Technical Field

The utility model relates to a pipeline is salvageed equipment technical field, especially is used for carrying out the dado type hafu festival of salvageing fast to leaking or damaged pipeline.

Background

The town water supply and drainage pipe network system usually adopts cement, cast iron or galvanized steel pipe, because geological conditions changes or body self defect, the pipeline rupture accident happens occasionally, for in time recovering the pipeline unobstructed, often adopt the quick connector of half a pipe-shaped section among the prior art to connect, adopt two half tubular half formula quick connectors when salvageing promptly, contain the damaged portion C of pipeline A, B in the pipe cavity is enclosed into to half a pipe-shaped section, utilize the bolt to tighten up the semicircle composition surface of half a pipe-shaped section 1, rubber seal 2 folds and seals damaged portion C.

After the repair of a common half joint is finished, the axial sealing gasket between the upper shell and the lower shell is compressed, but a certain gap is reserved between flanges of the upper shell and the lower shell, so that the side face of the axial sealing gasket is exposed outwards from the gap, the axial sealing gasket is easy to accelerate aging, and the risk of failure exists after the axial sealing gasket is used for a long time. In addition, in order to ensure the sealing performance of the joint of the upper shell and the lower shell, the fastening bolt can apply larger pressure to the sealing gasket, and the sealing gasket in the axial groove can be extruded out of the sealing groove or burst due to overlarge pressure.

To solve the above technical problem, chinese patent CN106439374A discloses a pipeline repairing device, which has the following scheme as shown in fig. 1: a raised protective wall is arranged on the outer side of the axial sealing groove of the upper shell or the lower shell of the half joint, and the protective wall seals a gap between flanges of the upper shell and the lower shell from the outer side in a mutually butted state. When the internal pressure of the half joint is too high, the half joint is deformed to a certain extent, as shown in fig. 2 and 3, which are a comparison between the deformation of the reference documents, it can be seen that once the half joint is deformed by swelling, the upper protection wall is attached to the side edge of the lower protection wall and serves as a supporting point for preventing further deformation, however, the supporting area is too small, and the deformation of the supporting area can also extrude the sealing gasket to deform easily. And it does not set up the dado structure of circumference sealing washer, and the same risk that has the extrusion fracture of circumference sealing washer.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a retaining wall type huff section can effectively prevent to extrude the fracture because of the tip sealing washer that the huff section warp and cause.

A retaining wall type half joint is characterized in that two half joint bodies are enclosed to form a half pipe joint, straight grooves and arc-shaped grooves are circumferentially arranged on the axial side edges and the end portions of the half joint bodies and used for embedding sealing part bodies, and an arc-shaped end face retaining wall is arranged on the outer side of each arc-shaped groove of the half joint body.

When the half joint expands outwards to generate arch deformation in the scheme, the end face protection walls 17 at two ends can effectively abut against the pipeline to form a fulcrum, the pipeline further bears pressure instead of the sealing gasket, and the sealing gasket is prevented from being extruded and deformed due to the fact that the sealing gasket is further deformed and extruded by the half joint.

Description of the drawings:

FIG. 1 is a schematic view of a prior art structure;

FIGS. 2 and 3 are schematic diagrams of the prior art before and after deformation;

fig. 4 is a schematic perspective view of the present invention;

FIG. 5 is a schematic view of half of a half-bridge;

fig. 6 is a cross-sectional view of the present invention;

fig. 7 is a schematic end view of the present invention.

The specific implementation mode is as follows:

a wall protection type half-half joint is characterized in that two half-half joint bodies 10 are enclosed to form a half joint, straight grooves 11 and arc-shaped grooves 12 are circumferentially arranged on the axial side edges and the end portions of the half joint bodies 10 and are used for embedding sealing part half bodies, inner protective walls 13 and outer protective walls 14 which are mutually meshed are arranged on the outer sides of the straight grooves 11 of the two half joint bodies 10, the wall surfaces of the inner protective walls 13 and the outer protective walls 14 are perpendicular to the connecting surface and the end surface of the half joint bodies 10, and first supporting point steps 15 serving as top supporting points of the outer protective walls 14 are arranged on the outer sides of the root portions of the inner protective walls 13.

In the above scheme, the first supporting point step 15 has two functions, one is to increase the rigidity of the straight groove 11, and the other is to limit the enclosing degree of the two half-huf-joint bodies 10 or limit the deformation of the two half-huf-joint bodies 10, when the half-huf-joint is subjected to outward expansion deformation, the top end of the outer protective wall 14 is abutted against the outer wall surfaces of the first supporting point step 15 and the inner protective wall 13, and the two functions simultaneously prevent the half-huf-joint from further deforming to extrude the sealing gasket to cause extrusion deformation of the sealing gasket.

An arc-shaped end face protection wall 17 is arranged on the outer side of the arc-shaped groove 12 of the half 10 half 12 half full. The end face protection walls 17 are arranged so that when the half joint expands outwards to generate arch deformation, the end face protection walls 17 at two ends can effectively abut against a pipeline to form a fulcrum, the pipeline further bears pressure instead of a sealing gasket, and the sealing gasket is prevented from being extruded and deformed due to the fact that the sealing gasket is further deformed and extruded by the half joint.

A second fulcrum step 16 serving as a fulcrum of the tip of the inner retaining wall 13 is provided inside the root of the outer retaining wall 14. When the Haff joint is expanded and deformed, the top end of the inner protecting wall 13 is abutted against the second fulcrum step 16, so that the situation that the Haff joint is further deformed to extrude the sealing gasket to cause the extrusion deformation of the sealing gasket is prevented.

The inner retaining wall 13 is arranged continuously along the outer groove wall of the straight groove 11. The inner protective wall 13 in the above solution is essentially the outer groove wall of the straight groove 11.

The outer retaining wall 14 is spaced from the connecting bolts along the axial direction of the half joint. Avoid interfering with the installation position of connecting bolt.

The retaining walls on the same side of the half-half-half 10 are staggered in the axial direction in the manner of outer retaining wall 14-outer retaining wall 14 on the other half-half. Thus, the two half-half-sections 10 can be uniformly pressed against each other when deformed.

An even number of outer protecting walls 14 on the same side of the half body 10 are arranged. Thus, the two half-half-halves 10 can be manufactured by using the same die, and the half-halves 10 can be fastened only by changing the directions of the half-halves 10.

Two outer retaining walls 14 in the same axial position are respectively placed on the two half-half huff-sections 10.

Claims

1. The utility model provides a dado half-body, two half-bodies of half-body (10) enclose to close and constitute half-body pipe coupling, and the axial side of half-body (10) and straight recess (11), arc recess (12) that tip circumference was arranged are used for imbedding sealing member halfbody, its characterized in that: an arc-shaped end face protection wall (17) is arranged on the outer side of the arc-shaped groove (12) of the half body (10).

2. A bulkhead half-joint according to claim 1, wherein: and two ends of the end face protection wall (17) are smooth sections which are reduced towards the end parts.

3. A bulkhead half-joint according to claim 2, wherein: an equal-height arc section is arranged between the two low-narrowing smooth sections.