CN211649411U

CN211649411U - Quick connector

Info

Publication number: CN211649411U
Application number: CN202020121974.6U
Authority: CN
Inventors: 刘广虎; 赵宏宇; 周升华; 刘光林; 谭覃; 王星月; 贾永永; 谢恒�
Original assignee: Beijing Disaster Prevention Science And Technology Co ltd; College Of Disaster Prevention Technology; Yibin Sanjiang Machinery Co Ltd
Current assignee: Beijing Disaster Prevention Science And Technology Co ltd; College Of Disaster Prevention Technology; Yibin Sanjiang Machinery Co Ltd; Institute of Disaster Prevention
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-10-09
Anticipated expiration: 2030-01-19

Abstract

The embodiment of the utility model discloses a quick joint, which comprises a bidirectional pipe body and two threaded sleeves which are spirally connected on the bidirectional pipe body through a threaded section, wherein both ends of the bidirectional pipe body are provided with reducing layer sleeves, the tail end of each reducing layer sleeve is provided with a constant diameter pipe, the constant diameter pipe is provided with an annular groove which is matched with a bulge arranged in the threaded sleeve, the joint of each reducing layer sleeve and the bidirectional pipe body is provided with a self-sealing structure, the self-sealing structure comprises an embedded ring groove arranged on the bidirectional pipe body and an annular pin tongue arranged in the threaded sleeve, an inner sealing ring is arranged in the embedded ring groove, the two ends of the bidirectional pipe body are provided with reducing layer sleeves, the tail ends of the reducing layer sleeves are provided with equal-diameter pipes, when the hose is sleeved with the equal-diameter pipe, no matter how the air pressure in the hose changes, the hose cannot expand and deflate at the joint, the quick sleeving and disassembling mode through the threaded sleeve provides more convenient pipeline connection.

Description

Quick connector

Technical Field

The embodiment of the utility model provides a relate to model test technical field, concretely relates to quick-operation joint.

Background

The quick connector is a connector which can realize the connection or disconnection of pipelines without tools. Quick-operation joint can divide into: the quick connector for air, the quick connector for oxygen and fuel gas, the quick connector for gas and liquid sharing, the quick connector for oil pressure, the quick connector for inert gas, the quick connector for cooling water and warm oil and the quick connector for semiconductor are various in the market, the traditional quick connector is easy to leak because the internal air pressure is in a state of changing between high pressure and low pressure in the process of manufacturing the constant value ternary mixed standard gas, so that the error of gas and liquid quantification occurs in the process of manufacturing the constant value ternary mixed standard gas, when the internal pressure difference is overlarge, the negative pressure causes that the letter connector of the quick connector cannot be separated or can be separated after long-time pressure relief, the traditional leakage-free quick connector is suitable for quick connection of pipelines in experimental environment due to the complex structure and large volume and is applied to the process of the quick connector, there is a certain residual gas inside the quick coupling.

SUMMERY OF THE UTILITY MODEL

For this, the embodiment of the utility model provides a quick-operation joint has solved traditional quick-operation joint and has produced the leakage easily, make the quantitative error of gas-liquid appear in the in-process of the preparation of definite value ternary mixture standard gas, and when inside pressure differential is too big, the negative pressure causes quick-operation joint's letter to connect and can't break away from or need just can break away from after the long-time pressure release, traditional no leakage quick-operation joint is because its complicated volume of structure is great, be applicable to the high-speed joint of the pipeline among the experimental environment, and at its in-process that acts on, there is certain residual gas's problem in quick-operation joint's inside.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

the utility model provides a quick-operation joint, includes two-way body and two threaded sleeve pipes on two-way body through screw thread section screwed connection, the both ends of two-way body are provided with reducing layer sleeve pipe, reducing layer sheathed tube end is provided with the constant diameter pipe, be provided with the protruding matched with annular groove who sets up with threaded sleeve inside on the constant diameter pipe, reducing layer sleeve pipe is provided with self sealss structure with the junction of two-way body, self sealss structure is including setting up embedded annular on two-way body and setting up at the inside ring shaped pin tongue of threaded sleeve, be provided with the inner seal circle in the embedded annular.

As an optimized scheme of the utility model, be provided with the outer seal circle on the two-way body in the outside of embedded annular, the contact surface of embedded annular and annular round pin tongue is the inclined plane, and the inclination on inclined plane is 25 ~ 35, the axial length of annular round pin tongue is 1 ~ 2mm than the axial length of embedded annular.

As a preferred scheme of the utility model, threaded sleeve is inside including straight tube section and round platform section, just round platform section axial extension reaches the root of annular round pin tongue.

As an optimal scheme of the utility model, the pipe diameter of each layer of sleeve pipe of reducing layer sheathed tube increases gradually, until the same with the diameter of constant diameter pipe.

As a preferable aspect of the present invention, the protrusion includes two semicircular protruding rings adjacent to each other.

The utility model discloses an embodiment has following advantage:

the utility model discloses be provided with the reducing layer sleeve pipe at the both ends of two-way body, reducing layer sheathed tube end is provided with the constant diameter pipe, and the effect of constant diameter pipe is the surface of increase and hose inner wall parallel contact, when hose and constant diameter pipe box-joint, no matter how the atmospheric pressure in the hose changes, also can not make the hose inflation lose heart in the junction, cup joint fast through the screw sleeve pipe and provide more convenient tube coupling with the mode of dismantling.

Drawings

In order to more clearly illustrate the embodiments of the present invention 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. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic view of a part of a quick coupling according to an embodiment of the present invention.

In the figure:

1-a bidirectional pipe body; 2-a threaded sleeve; 3-a thread section; 4-reducing layer sleeve; 5-an equal-diameter pipe; 6-an annular groove; 7-bulge; 8-embedding a ring groove; 9-ring-shaped latch tongue; 10-inner sealing ring; 11-an outer sealing ring;

201-a straight tube section; 202-circular table segment.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides a quick coupling, which comprises a bidirectional pipe body 1 and two threaded sleeves 2 which are spirally connected on the bidirectional pipe body 1 through threaded sections 3; wherein the threaded sleeve 2 is movably sleeved on the bidirectional pipe body 1, and is used for sleeving hoses connected with a container tank in the process of manufacturing the constant value ternary mixed standard gas at two ends of the bidirectional pipe body 1, and then the threaded sleeve 2 is rotated, so that the hoses are sleeved between the threaded sleeve 2 and the bidirectional pipe body 1, the hoses are compressed through the threaded sleeve 2, and the hoses are unlocked by reversely rotating the threaded sleeve 2.

Traditional quick-operation joint's joint department all is the antiskid arch that directly sets up the layer cover, the direct suit of hose is on the antiskid arch, carry out the high-speed joint of pipeline, and this kind of side of connection is unable to be suitable for under the especially higher condition of requirement to gas or liquid precision in the laboratory, when intraductal atmospheric pressure or hydraulic pressure are the change, the junction of hose and quick-operation joint produces inflation or shrink easily, and then makes gas leak or inhale the outside air, and then influences the result of experiment.

The utility model discloses in be provided with reducing layer sleeve pipe 4 at two-way body 1's both ends, reducing layer sleeve pipe 4's end is provided with constant diameter pipe 5, and the effect of constant diameter pipe 5 is the surface of increase and hose inner wall parallel contact, when hose and constant diameter pipe 5 cup joint, no matter how the atmospheric pressure in the hose changes, also can not make the hose inflation lose heart in the junction.

The equal-diameter pipe 5 is provided with an annular groove 6 matched with a bulge 7 arranged inside the threaded sleeve 2, the joint of the reducing layer sleeve 4 and the bidirectional pipe body 1 is provided with a self-sealing structure, the self-sealing structure comprises an embedded ring groove 8 arranged on the bidirectional pipe body and an annular pin tongue 9 arranged inside the threaded sleeve 2, and an inner sealing ring 10 is arranged in the embedded ring groove 8.

The utility model discloses still through the combination in threaded sleeve 2 and reducing layer sleeve pipe 4 department, when the hose cup jointed with reducing layer sleeve pipe 4, form the sealed cavity that sealed space formed and had stable pressure, too big or when the hour of pressure in the hose, the stability of the connection of its hose all can be guaranteed, the condition of disappointing can not appear.

An outer sealing ring 11 is arranged on the bidirectional pipe body 1 positioned outside the embedded ring groove 8, the contact surface of the embedded ring groove 8 and the annular pin tongue 9 is an inclined surface, the inclination angle of the inclined surface is 25-35 degrees, and the axial length of the annular pin tongue 9 is 1-2 mm shorter than that of the embedded ring groove 8.

The threaded sleeve 2 internally comprises a straight pipe section 201 and a circular truncated cone section 202, and the circular truncated cone section 202 axially extends to the root of the annular bolt tongue 9.

The diameter of each layer of the reducing layer sleeve 4 is gradually increased until the diameter is the same as that of the equal diameter pipe 5.

The bulge 7 comprises two adjacent semicircular bulge rings, a certain gap exists between the two bulge rings, the height of the bulge ring positioned on the inner side is higher than that of the bulge ring positioned on the outer side, the function of the bulge ring is that in the long-time sleeving process, the hose is clamped in the annular groove 6, the bulge ring on the outer side buckles the hose into the annular groove 6, and the deformed part of the hose is pressed on the surface of the equal-diameter pipe 5 by the bulge ring on the inner side, so that sealing is realized;

and be applicable to the hose that the pipe diameter has 2 ~ 3mm disparity, when cup jointing, the pipe diameter is thinner then presses the pipe wall of hose into annular groove 6 with inboard protruding circle, and the protruding circle in the outside is pressed the part that the hose lies in the annular groove 6 outside and is held on the equal-diameter tube 5 surface.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a quick-operation joint, its characterized in that, includes two-way body (1) and through two threaded sleeve pipe (2) of screw thread section (3) screwed connection on two-way body (1), the both ends of two-way body (1) are provided with reducing layer sleeve pipe (4), the end of reducing layer sleeve pipe (4) is provided with constant diameter pipe (5), be provided with on constant diameter pipe (5) with protruding (7) matched with annular groove (6) of threaded sleeve pipe (2) inside setting, reducing layer sleeve pipe (4) are provided with self sealss structure with the junction of two-way body (1), self sealss structure is including setting up embedded annular (8) on two-way body and setting up at the inside annular round pin tongue (9) of threaded sleeve pipe (2), be provided with interior sealing washer (10) in embedded annular (8).

2. The quick joint according to claim 1, wherein the bidirectional pipe body (1) positioned outside the embedded ring groove (8) is provided with an outer sealing ring (11), the contact surface of the embedded ring groove (8) and the annular pin tongue (9) is a slope, the inclination angle of the slope is 25-35 degrees, and the axial length of the annular pin tongue (9) is 1-2 mm shorter than that of the embedded ring groove (8).

3. A quick coupling according to claim 1, characterized in that the threaded bushing (2) internally comprises a straight section (201) and a truncated cone section (202), and in that the truncated cone section (202) extends axially to the root of the annular tongue (9).

4. A quick coupling according to claim 1, characterized in that the diameter of each of said layers of reducing sleeves (4) is gradually increased until the same diameter as that of the equal diameter pipe (5).

5. A quick coupling according to claim 3, characterized in that the projection (7) comprises two semicircular-shaped projecting rings next to each other.