CN215928696U - Welding-free movable joint - Google Patents
Welding-free movable joint Download PDFInfo
- Publication number
- CN215928696U CN215928696U CN202121573391.8U CN202121573391U CN215928696U CN 215928696 U CN215928696 U CN 215928696U CN 202121573391 U CN202121573391 U CN 202121573391U CN 215928696 U CN215928696 U CN 215928696U
- Authority
- CN
- China
- Prior art keywords
- conical surface
- joint body
- connecting nut
- nut
- working
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model provides a exempt from to weld formula union, belongs to fluid line connecting device field, its characterized in that: comprises a connecting nut and a joint body; an annular groove is formed in the inner wall of the lower end of the connecting nut; the inner wall of the lower part of the annular groove is provided with a working conical surface of a connecting nut; a connecting nut assembling conical surface is arranged below the connecting nut working conical surface; the diameter of the upper end of the joint body is equal to that of the inner through hole; the outer wall of the upper part of the joint body is provided with a working conical surface of the joint body; a joint body assembly conical surface is arranged below the joint body working conical surface; the lower end of the joint body assembly conical surface is provided with an arc-shaped groove; a steel wire retaining ring is sleeved in the arc-shaped groove. The connecting nut and the joint body can be integrally processed and formed by general profiles, so that the use of a welding process is avoided, electroplating can be carried out in a part state, and the consistency of the thickness and the appearance of a part coating is ensured; no special tool is needed in the assembly process, the assembly process is relatively simple, the realization of batch and standardized production is facilitated, and the method is suitable for popularization and application.
Description
Technical Field
The utility model belongs to the field of fluid pipeline connecting devices, and particularly relates to a welding-free movable joint.
Background
In the working conditions of fluid pipeline butt joint and instrument connection, an internal thread nut joint-external thread joint structure or a flange butt joint structure is mostly used for ensuring reliable connection and meeting the required sealing performance, and a movable nut structure or a movable flange structure at one end is generally adopted under the constraints of installation errors, orientation problems after installation and the like; the existing structure mostly adopts assembly welding or extrusion deformation of the front end after assembly to realize the positioning of the connecting section nut; such structural connection has the following problems due to limitations of installation space, material characteristics, and operability: the risk of point leakage exists at the welding seam, different materials are different under the influence of the welding process, and hidden danger exists in the reliability of the welding seam strength; the number of parts is large in the production and manufacturing process, and the assembly process is complex; the extrusion deformation of the front end after assembly directly influences whether the connection strength meets the requirement; when the space of the joint is limited, the processing size of the joint or the flange and the difficulty degree of subsequent welding are directly influenced.
Disclosure of Invention
The utility model aims to solve the problems and provides a welding-free movable joint.
The welding-free movable joint comprises a connecting nut and a joint body; the connecting nut is provided with an inner through hole; the inner wall of the upper end of the inner through hole is provided with threads; an annular groove is formed in the inner wall of the lower end of the connecting nut; the inner wall of the lower part of the annular groove is provided with a working conical surface of a connection nut which is in an inward contraction shape; a connection nut assembly conical surface in an outward expansion shape is arranged below the working conical surface of the connection nut;
the diameter of the upper end of the joint body is equal to that of the inner through hole; the outer wall of the upper part of the joint body is provided with a joint body working conical surface which is in an inward contraction shape; a joint body assembling conical surface which is in an inward contraction shape is arranged below the joint body working conical surface; the lower end of the joint body assembly conical surface is provided with an arc-shaped groove; a steel wire check ring is sleeved in the arc-shaped groove;
a fastening threaded hole is formed in the side wall of the lower end of the connecting nut; and a fastening screw is arranged in the fastening threaded hole and used for ensuring the orientation of the nut after connection.
Furthermore, according to the welding-free movable joint, a connecting nut connecting surface is vertically arranged between the connecting nut working conical surface and the connecting nut assembling conical surface; a joint body connecting surface is vertically arranged between the joint body working conical surface and the joint body assembling conical surface; the steel wire baffle ring is stably supported and contacted by the joint body and the connecting surface of the connecting nut in the working process.
Furthermore, the welding-free movable joint is characterized in that a connecting through hole is axially formed in the middle of the joint body; the connecting through-hole serves as a gas or liquid passage.
Furthermore, according to the welding-free movable joint, an annular sealing groove is formed in the end face of the top end of the joint body; the sealing groove ensures that the sealing fluid does not overflow when the sealing groove is connected with the butt joint piece.
The welding-free movable joint comprises a connecting nut and a joint body; the connecting nut and the joint body can be integrally processed and formed by general profiles, so that the use of a welding process is avoided, electroplating can be carried out in a part state, and the consistency of the thickness and the appearance of a part coating is ensured; no special tool is needed in the assembly process, the assembly process is relatively simple, the realization of batch and standardized production is facilitated, and the method is suitable for popularization and application.
Drawings
FIG. 1 is a schematic structural view of a welding-free type movable joint according to the present invention;
the connector comprises a connector body, a steel wire retainer ring, a fastening screw, a connector nut working conical surface, a connector nut assembling conical surface, a connector nut connecting surface, a connector body working conical surface, a connector body assembling conical surface, a connector body connecting surface, a ring-shaped groove, a sealing groove and a connecting through hole, wherein the connector body is 1-the connector nut, the connector body 2-the connector body, the steel wire retainer ring 3-the fastening screw 4-the fastening screw, the connector nut working conical surface, the connector nut assembling conical surface 13-the connector nut connecting surface, the connector body working conical surface 21-the connector body assembling conical surface 22-the connector body assembling conical surface 23-the connector body connecting surface, the ring-shaped groove 5-the sealing groove 6-and the connecting through hole 7-are 11-the connector nut working conical surface.
Detailed Description
The welding-free union of the present invention is described in detail below with reference to the accompanying drawings and examples.
The welding-free movable joint disclosed by the utility model comprises a connecting nut 1 and a joint body 2, as shown in figure 1; the connecting nut 1 is provided with an inner through hole; the inner wall of the upper end of the inner through hole is provided with threads; an annular groove 5 is formed in the inner wall of the lower end of the connecting nut 1; the inner wall of the lower part of the annular groove 5 is provided with a connection nut working conical surface 11 which is in an inward contraction shape; a connection nut rotating conical surface 12 in an outward expansion shape is arranged below the connection nut working conical surface 11;
the diameter of the upper end of the joint body 2 is equal to that of the inner through hole; the outer wall of the upper part of the joint body 2 is provided with a joint body working conical surface 21 which is in a retraction shape; a joint body assembling conical surface 22 which is in a retraction shape is arranged below the joint body working conical surface 21; the lower end of the joint body assembly conical surface 22 is provided with an arc-shaped groove; a steel wire retainer ring 3 is sleeved in the arc-shaped groove;
a fastening threaded hole is formed in the side wall of the lower end of the connecting nut 1; and a set screw 4 is arranged in the set screw hole and used for ensuring the orientation of the nut after connection.
In the embodiment of the present disclosure, a connecting nut connecting surface 13 is vertically disposed between the connecting nut working conical surface 11 and the connecting nut rotating conical surface 12; a joint body connecting surface 23 is vertically arranged between the joint body working conical surface 21 and the joint body assembling conical surface 22; a connecting through hole 7 is axially arranged in the middle of the joint body 2; an annular sealing groove 6 is arranged on the end face of the top end of the joint body 2.
In the embodiment of the disclosure, the connecting nut 1 and the joint body 2 are both integrally formed by hexagonal bar stock; the end of the joint body 2 shown in fig. 1 is provided with a connecting structure and a sealing structure required for connecting with a rear pipeline. The steel wire retainer ring 3 in the embodiment of the disclosure can refer to a standard component described in GB/T895.1-1986; the set screw 4 may refer to the standard described in GB/T78-2007.
During assembly, firstly, the steel wire retainer ring 3 is arranged in an arc-shaped groove at the lower end of an assembly conical surface 22 of the connector body, then the connecting nut 1 is sleeved in from the front end of the connector body 2, certain pressure is applied downwards, after the steel wire retainer ring 3 is contracted by utilizing a connecting nut rotating conical surface 12, the connecting nut 1 slides downwards, and when a connecting nut working conical surface 11 moves to the position of the steel wire retainer ring 3, the steel wire retainer ring 3 is elastically expanded to cling to the connecting nut working conical surface 11 by self; at the moment, the connecting nut 1 is lifted upwards, the steel wire retainer ring 3 moves to the working conical surface 21 of the connector body along with the lifting, and the assembly of the instrument connector is completed.
The clearance between the steel wire retainer ring 3 and the working conical surface 21 of the joint body ensures the realization of the function of the movable nut of the welding-free movable joint; meanwhile, the necessary connection strength required when the instrument connector is connected is provided by the contact area of the working conical surface 11 of the connecting nut and the steel wire retainer ring 3. After the instrument joint is connected, the fastening screw 4 is additionally arranged to ensure the assembled direction and effectively prevent the loosening of the threaded connection.
In the disclosed example, the connecting nut 1 and the joint body 2 are made of brass and require electroplating on the surface of the parts; in the traditional structure, the instrument joint mostly adopts the form of a group welding part (silver brazing) and the whole electroplating process after welding; in the process, due to the limitation of the height and the size, the heat affected zone basically covers the whole part during welding, and great inconvenience is brought to the guarantee of the welding seam strength and the cleaning of the welding seam after welding; meanwhile, in the whole electroplating link, the coating cannot be attached in a narrow gap between the movable nut and the joint, so that the consistency of the whole appearance of the part is influenced. The welding-free movable joint provided by the embodiment provides a new movable nut or movable flange structure, so that on one hand, a process of welding under the traditional structure is abandoned, the defects caused by the welding process are avoided, on the other hand, the structural form is simplified, the processing and the assembly become simple, and the connection can be realized under the working condition of limited space. Simultaneously the structure of this application be not restricted by the material, to the problem that the material is restricted under special operating mode can better solution.
Claims (4)
1. The utility model provides a exempt from to weld formula union which characterized in that: comprises a connecting nut (1) and a joint body (2); the connecting nut (1) is provided with an inner through hole; the inner wall of the upper end of the inner through hole is provided with threads; an annular groove (5) is formed in the inner wall of the lower end of the connecting nut (1); the inner wall of the lower part of the annular groove (5) is provided with a connection nut working conical surface (11) which is in an inward contraction shape; a connection nut assembly conical surface (12) in an outward expansion shape is arranged below the connection nut working conical surface (11);
the diameter of the upper end of the joint body (2) is equal to that of the inner through hole; the outer wall of the upper part of the joint body (2) is provided with a joint body working conical surface (21) which is in a retraction shape; a joint body assembling conical surface (22) which is in a retraction shape is arranged below the joint body working conical surface (21); the lower end of the joint body assembly conical surface (22) is provided with an arc-shaped groove; a steel wire retainer ring (3) is sleeved in the arc-shaped groove;
a fastening threaded hole is formed in the side wall of the lower end of the connecting nut (1); and a set screw (4) is arranged in the set threaded hole.
2. The weld-free union of claim 1, wherein: a connecting nut connecting surface (13) is vertically arranged between the connecting nut working conical surface (11) and the connecting nut assembling conical surface (12); and a joint body connecting surface (23) is vertically arranged between the joint body working conical surface (21) and the joint body assembling conical surface (22).
3. The weld-free union of claim 2, wherein: the middle of the joint body (2) is provided with a connecting through hole (7) along the axial direction.
4. The weld-free union of claim 3, wherein: an annular sealing groove (6) is formed in the end face of the top end of the joint body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121573391.8U CN215928696U (en) | 2021-07-12 | 2021-07-12 | Welding-free movable joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121573391.8U CN215928696U (en) | 2021-07-12 | 2021-07-12 | Welding-free movable joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215928696U true CN215928696U (en) | 2022-03-01 |
Family
ID=80400860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121573391.8U Active CN215928696U (en) | 2021-07-12 | 2021-07-12 | Welding-free movable joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215928696U (en) |
-
2021
- 2021-07-12 CN CN202121573391.8U patent/CN215928696U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20040108719A1 (en) | Threaded tube joint | |
| JP2002527696A (en) | Integrated screw connection of two metal tubes | |
| USRE29376E (en) | Welded sleeve fitting | |
| CN216590386U (en) | Sealing joint structure free of steel pipe welding | |
| CN215928696U (en) | Welding-free movable joint | |
| CN109386674B (en) | Male joint of pipe joint and pipe joint | |
| CN217784266U (en) | Control valve | |
| CN215568809U (en) | Connecting pipe structure for high-temperature and high-pressure equipment | |
| CN211398861U (en) | High-strength stainless steel seamless steel pipe | |
| CN211649393U (en) | Turbulence-proof pipeline | |
| CN213336267U (en) | Venturi tube | |
| CN210218966U (en) | Flaring type pipe joint | |
| CN202812646U (en) | Flaring plug for pipeline | |
| CN210371441U (en) | Internal thread oil cylinder | |
| CN210196715U (en) | High-strength impact-resistant neck-equipped welding neck flange for petroleum pipeline | |
| CN209705282U (en) | Anti-rotating valve rod and spool flexible linking device | |
| CN212273321U (en) | Axial leakage-proof double-sealing pipe fitting | |
| CN111571088A (en) | High-strength welding neck flange and processing method thereof | |
| CN105972327A (en) | Novel membrane separator sealing device | |
| CN210221153U (en) | Throttle type flow measuring device of throat pressure-taking long-neck nozzle | |
| CN218094509U (en) | Two-piece die forging anti-blowout fixed ball valve | |
| CN214579441U (en) | Pre-assembled connector body of pre-assembled joint for groove steel pipe | |
| CN220185659U (en) | Connecting structure of push rod and piston of clutch booster | |
| CN216078774U (en) | Taper sealing right-angle pipe joint | |
| CN213021739U (en) | Special flow nozzle for boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |