CN223768332U - A quick-connect sealing structure for sleeves - Google Patents

Abstract

The utility model discloses a sleeve quick-connection sealing structure, which comprises a sleeve which is arranged between a pair of joints to realize bridging, wherein a convex sealing structure which extends towards the joints is arranged on the sleeve, the convex sealing structure is circumferentially distributed on the outer peripheral surface of the sleeve, and the convex sealing structure is tightly attached to the joints to form a seal. The end part of the sleeve is provided with a convex pier head sealing structure, the cold heading process is utilized to deform the steel pipe to form the sealing structure to be fixed by matching with a nut thread structure, and the durability of the joint is improved by replacing the original clamping sleeve part.

Description

Casing quick-connection sealing structure

Technical Field

The utility model relates to the field of pipeline joint sealing structures, in particular to a sleeve quick-connection sealing structure.

Background

The high-pressure gas source usually enters the gas pipeline system after passing through the connector, the connector and the pipeline are two mutually independent parts, and when the connector and the pipeline are connected, gaps exist, so that gas leakage is easy. One common practice is to use a ferrule to assist in sealing and to compress the inner multi-layered sealing clip under the clamping of the nut to form a seal. But the cutting ferrule is easy to wear in the disassembly and assembly process of the pipe fitting, and meanwhile, the inside nonmetallic structure is worn at high temperature and high pressure for a long time, so that the whole durability is poor.

Disclosure of utility model

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The utility model provides a sleeve pipe connects seal structure soon, is including being arranged in the sleeve pipe that realizes bridging between a pair of joint be provided with on the sleeve pipe towards the protruding seal structure that the joint stretches out, protruding seal structure be circumference form distribute in on the sleeve pipe's the outer peripheral face, protruding seal structure with the joint closely laminates and forms sealedly.

In a preferred embodiment of the utility model, the male seal is located at a sleeve end position of the sleeve, the male seal being integral with the sleeve.

In a preferred embodiment of the utility model, a locking member is also provided on the sleeve, which locking member is locked to the coupling to prevent the sleeve from being removed from the coupling.

In a preferred embodiment of the present utility model, the locking member is a nut sleeved on the sleeve, and the nut is axially limited by the protruding sealing structure and cannot be separated from the sleeve.

In a preferred embodiment of the utility model, a thread formation is arranged on the end of the joint, by means of which thread formation the nut is locked with the joint.

In a preferred embodiment of the utility model, the male seal structure has a flange projecting towards the joint, the flange sides meeting the joint to form a stop.

In a preferred embodiment of the utility model, a first and a second bevel are provided on the sides of the flange, respectively, the first bevel matching the inner wall of the interface of the joint so as to carry out the tensioning during the gradual insertion of the sleeve into the joint.

In a preferred embodiment of the present utility model, the slope of the first slope is smaller than the second slope.

The utility model has the beneficial effects that:

According to the sleeve quick-connection sealing structure, the protruding pier head sealing structure is arranged at the end part of the sleeve, the cold heading process is utilized to deform the steel pipe to form the sealing structure to be fixed in cooperation with the nut thread structure, and the durability of the joint is improved by replacing an original clamping sleeve part.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a cross-sectional view of the present utility model.

Detailed Description

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and the above description is for convenience of description of the present utility model to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As used in this specification, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. The use of the terms "comprising," "including," and "containing" in the specification mean that the recited features are present, but that one or more other features are not excluded.

In the description, an element is referred to as being "on," "fixed" to, "connected" to, "engaged" with, etc. another element, which may be directly on, fixed to, connected to, engaged with or contacting the other element, or intervening elements may be present.

Exemplary embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood, however, that the application may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide yet additional embodiments. Throughout the drawings, like reference numbers indicate identical or functionally identical elements.

Fig. 1 shows a sleeve quick-connect seal structure, wherein a sleeve 20 is used for being inserted into at least one pair of connectors 10 to bridge an air path. A protruding sealing structure 23 is arranged on the outer circumference of the sleeve end 21, which is characterized in that the outer diameter of part of the end is increased, so that the sleeve 20 is tightly expanded when being sleeved with the joint 10, thereby realizing sealing. The protruding sealing structure 23 is circumferentially arranged around the outer peripheral surface of the sleeve end 21, and is provided with an upwards extending flange 23, the flange 23 just abuts against the joint of the joint end 11 to limit after the sleeve 20 is connected with the structure 10, and a first inclined surface 24 and a second inclined surface 25 which are in transition with the outer wall of the sleeve 20 are respectively arranged on two sides of the flange 23. The protruding sealing structure 23 is integrally formed with the sleeve 20 by a cold heading process, that is, the protruding sealing structure 23 is formed by deformation of the sleeve 20 itself.

In a preferred embodiment, the first bevel 24 is designed to have a smaller angle of inclination than the second bevel 25, so that the outer diameter of the sleeve end 21 gradually increases gradually as it is inserted into the joint 10, thereby reducing the handling difficulties.

A nut 30 is further sleeved outside the sleeve 20, and the nut 30 is limited by the flange 23 to slide on the sleeve 20 in the axial direction and cannot be separated. A screw structure is disposed on the outer circumferential surface of the joint end 11, and the nut 30 is locked to the joint 10 by the screw structure to prevent the sleeve 20 from being removed from the joint 10.

In another preferred embodiment, the male seal structures 23 may be disposed at both ends of the sleeve 20.

Claims (8)

1. The utility model provides a sleeve pipe connects seal structure soon, is including being arranged in the sleeve pipe that realizes bridging between a pair of joint, its characterized in that be provided with on the sleeve pipe towards the protruding seal structure that the joint stretches out, protruding seal structure be the circumference form distribute in on the outer peripheral face of sleeve pipe, protruding seal structure with the joint closely laminates and forms the seal.

2. A quick connect seal for a bushing as claimed in claim 1 wherein said male seal is located at a bushing end of said bushing, said male seal being integral with said bushing.

3. A quick-connect seal for a bushing as claimed in claim 2 wherein said bushing is further provided with a locking member, said locking member being engageable with said fitting to prevent removal of said bushing from said fitting.

4. A quick-connect seal for a bushing as claimed in claim 3 wherein said locking member is a nut sleeved on said bushing, said nut being axially restrained by said male seal from disengagement with said bushing.

5. A casing quick connect seal arrangement as claimed in claim 4 wherein a threaded formation is provided on the end of the fitting, said nut being secured to said fitting by said threaded formation.

6. A sleeve snap-on seal according to any one of claims 1 to 5, wherein said male seal has a flange projecting towards said joint, said flange sides meeting said joint to form a stop.

7. A casing quick connect seal arrangement as claimed in claim 6 wherein said flange is provided with first and second inclined surfaces on respective sides thereof, said first inclined surfaces matching with the internal interface walls of said connector to effect tensioning during gradual insertion of said casing into said connector.

8. The casing quick connect seal of claim 7 wherein the slope of said first slope is less than the slope of said second slope.