CN218063778U

CN218063778U - Cutting ferrule formula external thread joint

Info

Publication number: CN218063778U
Application number: CN202221799758.2U
Authority: CN
Inventors: 姬宏伟; 马红卫; 孙勇
Original assignee: Sandmivir Shanghai Fluid System Co ltd
Current assignee: Sandmivir Shanghai Fluid System Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-12-16
Anticipated expiration: 2032-07-12

Abstract

The utility model discloses a belong to the technical field of connect, specifically be a cutting ferrule formula external thread joint, including the joint body, preceding cutting ferrule, back cutting ferrule, cutting ferrule nut and pipeline, the body both ends symmetry of joint is provided with the toper back of the body face body, toper back of the body face body inner wall is kept away from connect body middle part one end to enlarge gradually, pipeline one end inserts connect internal portion. The utility model discloses a, during the assembly joint subassembly, only need to connect the pipeline plug-in, reach the bottommost when the pipeline, contact the sealing layer that connects the body can. When the ferrule nut is rotated clockwise, the resulting mechanical thrust pushes the front ferrule and the rear ferrule of the connector assembly forward between the ferrule nut and the connector body. The mechanical thrust pushes the rear ferrule against the tapered back body of the front ferrule, while the thrust pushes the front ferrule into the tapered mouth of the connector body. The rear ferrule is pressed onto the tubing by an inward radial force to form a full face seal on the conically tapered surface of the fitting body.

Description

Cutting ferrule formula external thread joint

Technical Field

The utility model relates to a connect technical field, specifically be a cutting ferrule formula external thread joint.

Background

The prior art in the connector market includes single ferrule or quick-plug connectors. Such a joint has the following two disadvantages: firstly, the air tightness is poor, and the pressure resistance is poor; air-tightness may be ensured at low pressures, but most joints leak when the pressure reaches above 5 kg. Secondly, the external thread part of the plastic joint adopts the raw material tape winding mode to ensure the sealing performance, and the raw material tape winding quantity can ensure the leakage, and no standard exists, so that a ferrule type external thread joint needs to be developed.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.

For solving the technical problem, according to the utility model discloses an aspect, the utility model provides a following technical scheme:

a ferrule-type pin joint, comprising: the connector comprises a connector body, a front clamping sleeve, a rear clamping sleeve, a clamping sleeve nut and a pipeline, wherein conical back surface bodies are symmetrically arranged at two ends of the connector body, the inner walls of the conical back surface bodies are far away from one end of the middle of the connector body and are gradually enlarged, one end of the pipeline is inserted into the connector body, external threads are arranged on the outer side wall of the conical back surface body, one end of the conical back surface body, far away from the connector body, is screwed and sleeved with the clamping sleeve nut, and the inner ring of the rear clamping sleeve is provided with internal threads matched with the external threads.

As a ferrule type external thread joint's an optimal selection scheme, wherein: after the pipeline is inserted into the connector body, the inner wall of the conical back surface body and the outer wall of the pipeline are provided with conical tapered mouths which are gradually reduced.

As a ferrule type external thread joint's an preferred scheme, wherein: the front clamping sleeve is positioned inside the conical tapered opening, the outer side wall of the front clamping sleeve is tightly attached to the inner side wall of the conical back body, and the inner side wall of the front clamping sleeve is tightly attached to the outer side wall of the pipeline.

As a ferrule type external thread joint's an preferred scheme, wherein: the front clamping sleeve is provided with a rear clamping sleeve on one side away from the conical tapered opening, and the rear clamping sleeve is tightly attached to the inner side wall of the clamping sleeve nut and the outer side wall of the pipeline.

As a ferrule type external thread joint's an preferred scheme, wherein: and a sealing layer is arranged at the insertion contact position of the joint body inner ring and one end of the pipeline.

Compared with the prior art, the beneficial effects of the utility model are that: when the joint assembly is assembled, the pipeline is inserted into the joint body, and when the pipeline reaches the bottommost part, the pipeline contacts the sealing layer of the joint body. When the ferrule nut is rotated clockwise, the resulting mechanical thrust pushes the front ferrule and the rear ferrule of the connector assembly forward between the ferrule nut and the connector body. The mechanical thrust pushes the rear ferrule against the tapered back body of the front ferrule, while the thrust pushes the front ferrule into the tapered mouth of the connector body. The rear ferrule is pressed onto the tubing by an inward radial force to form a full face seal on the conically tapered surface of the fitting body. When the manual rotation senses that the ferrule has been tightened, the ferrule nut is rotated 1/4 of a turn from the manual tightening position to ensure that the seal is subjected to a uniform thrust. This ensures that an effective sealing effect can be obtained in high-pressure and ultra-high vacuum environments.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor. Wherein:

FIG. 1 is a schematic view of the overall three-dimensional structure of the present invention;

FIG. 2 is a schematic cross-sectional front view of the present invention;

in the figure: the coupling comprises a coupling body 100, a conical back face body 110, a sealing layer 120, external threads 130, a front ferrule 200, a rear ferrule 300, a ferrule nut 400, internal threads 410, and a pipe 500.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways than those specifically described herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of explanation, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Fig. 1-2 show a schematic structural diagram of a ferrule-type male connection end of the present invention, which includes:

the connector comprises a connector body 100, a front ferrule 200, a rear ferrule 300, a ferrule nut 400 and a pipeline 500, wherein conical back surface bodies 110 are symmetrically arranged at two ends of the connector body 100, one end, far away from the middle part of the connector body 100, of the inner wall of each conical back surface body 110 is gradually enlarged, one end of the pipeline 500 is inserted into the connector body 100, a sealing layer 120 is arranged at the insertion contact position of the inner ring of the connector body 100 and one end of the pipeline 500, external threads 130 are arranged on the outer side wall of each conical back surface body 110, one end, far away from the connector body 100, of each conical back surface body 110 is screwed and sleeved with the ferrule nut 400, and internal threads 410 matched with the external threads 130 are arranged on the inner ring of the rear ferrule 300. After the pipe 500 is inserted into the connector body 100, tapered mouths are formed on the inner wall of the tapered back surface body 110 and the outer wall of the pipe 500. The front clamping sleeve 200 is positioned inside the conical tapered opening, the outer side wall of the front clamping sleeve 200 is tightly attached to the inner side wall of the conical back surface body 110, and the inner side wall of the front clamping sleeve 200 is tightly attached to the outer side wall of the pipeline 500. The front ferrule 200 is provided with a rear ferrule 300 on the side away from the tapered mouth, and the rear ferrule 300 is tightly attached to the inner side wall of the ferrule nut 400 and the outer side wall of the pipeline 500.

In a particular use, when assembling the fitting assembly, the conduit 500 is simply inserted into the fitting body 100, with the conduit 500 reaching the bottom-most portion and contacting the sealing layer 120 of the fitting body 100. When the ferrule nut 400 is rotated in a clockwise direction, the resulting mechanical thrust forces push the front ferrule 200 and the rear ferrule 300 of the fitting assembly forward between the ferrule nut 400 and the fitting body 100. This mechanical pushing force pushes the rear ferrule 300 against the tapered back body 110 of the front ferrule 200 while the pushing force pushes the front ferrule 200 into the tapered mouth of the fitting body 100. The rear ferrule 300 is forced radially inward against the tubing 500 to form a full face seal on the conically tapered surface of the fitting body 100. When manual rotation senses that the seal has been tightened, ferrule nut 400 is rotated another 1/4 of a turn from the manual tightening position to ensure that the seal is evenly stressed. This ensures that an effective sealing effect can still be achieved in high-pressure and ultra-high vacuum environments.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A ferrule type male fitting, comprising: the novel pipe joint comprises a joint body (100), a front clamping sleeve (200), a rear clamping sleeve (300), a clamping sleeve nut (400) and a pipeline (500), wherein conical back surface bodies (110) are symmetrically arranged at two ends of the joint body (100), one ends, far away from the joint body (100), of the inner walls of the conical back surface bodies (110) are gradually enlarged, one ends, far away from the middle of the joint body (100), of the pipeline (500) are inserted into the joint body (100), external threads (130) are arranged on the outer side walls of the conical back surface bodies (110), one ends, far away from the joint body (100), of the conical back surface bodies (110) are in screwed connection with the clamping sleeve nut (400), and internal threads (410) matched with the external threads (130) are arranged on the inner ring of the rear clamping sleeve (300).

2. The ferrule-type pin joint as recited in claim 1, wherein: after the pipeline (500) is inserted into the connector body (100), the inner wall of the conical back surface body (110) and the outer wall of the pipeline (500) are formed with tapered and gradually reduced conical reducing mouths.

3. The ferrule-type pin joint as recited in claim 1, wherein: the front clamping sleeve (200) is located inside the conical tapered opening, the outer side wall of the front clamping sleeve (200) is tightly attached to the inner side wall of the conical back surface body (110), and the inner side wall of the front clamping sleeve (200) is tightly attached to the outer side wall of the pipeline (500).

4. The ferrule-type male fitting according to claim 1, wherein: and a rear clamping sleeve (300) is arranged on one side, away from the conical tapered opening, of the front clamping sleeve (200), and the rear clamping sleeve (300) is tightly attached to the inner side wall of the clamping sleeve nut (400) and the outer side wall of the pipeline (500).

5. The ferrule-type pin joint as recited in claim 1, wherein: and a sealing layer (120) is arranged at the insertion contact position of the inner ring of the joint body (100) and one end of the pipeline (500).