CN213064967U - Pipeline connection structure with improved structure - Google Patents
Pipeline connection structure with improved structure Download PDFInfo
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- CN213064967U CN213064967U CN202022122405.6U CN202022122405U CN213064967U CN 213064967 U CN213064967 U CN 213064967U CN 202022122405 U CN202022122405 U CN 202022122405U CN 213064967 U CN213064967 U CN 213064967U
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Abstract
The utility model discloses a pipeline connection structure of institutional advancement, it includes first pipe, second pipe, cup joints nut, the annular joint cover of circle and sealing washer, cup joint nut cover and establish and threaded connection in the second pipe, the tip of second pipe is equipped with the internal diameter enlargement portion, the second pipe inserts the internal diameter enlargement portion to the second pipe is through joint cover and sealing washer joint. After the cup joint nut is screwed, the joint cover can firmly push up the sealing washer on the one hand and tightly in the connection terminal surface of first pipe, and on the other hand can firmly block the second pipe in the internal diameter expansion portion again through the cooperation of bellying and draw-in groove, the utility model discloses an each part closely cooperates, and not only simple structure, the leakproofness is good moreover.
Description
Technical Field
The utility model relates to a pipeline structure especially indicates a pipeline connection structure of institutional advancement.
Background
The pipe joint is a connecting tool between pipelines and is also a connecting point which can be disassembled and assembled between the pipelines, and plays an indispensable important role in the connection of pipe fittings.
Pipe joints are of various types, and common pipe joints can be generally divided into hard pipe joints and hose joints. If the hard pipe joint is divided according to the connecting mode of the pipe joint and the pipeline, the hard pipe joint has three types of flaring type, clamping sleeve type and welding type. The welded type can not be disassembled, and although the flared type and the clamping sleeve type can be disassembled, the sealing performance is not ideal.
SUMMERY OF THE UTILITY MODEL
The utility model provides a institutional advancement's pipeline connection structure, its aim at overcome the not good enough problem of sealing performance that prior art exists.
In order to achieve the purpose, the utility model provides a technical scheme as follows:
a pipeline connecting structure with an improved structure comprises a first pipe, a second pipe, a sleeve nut, a circular clamping sleeve and a sealing ring, wherein an external thread section is arranged at the connecting end part of the first pipe, an internal diameter expansion part is arranged on the inner wall of the first pipe corresponding to the external thread section, the internal diameter expansion part comprises a cylindrical internal diameter expansion wall and a circular connecting bottom surface, one end of the internal diameter expansion wall extends to the connecting end surface of the first pipe, and the other end of the internal diameter expansion wall extends to the connecting bottom surface; a circular clamping groove is formed in the outer wall of the second pipe; the inner wall of the sleeve nut comprises an inner thread section, a sealing ring mounting section, a clamping sleeve mounting section and a small inner diameter section which are sequentially connected, the small inner diameter section is sleeved on the second pipe, the connecting end surface of the second pipe abuts against the connecting bottom surface of the inner diameter expansion part, and the inner thread section is in threaded connection with the outer thread section; the clamping sleeve is arranged between the clamping sleeve mounting section and the outer wall of the corresponding second pipe, the clamping sleeve comprises an annular clamping sleeve body and a protruding part, the protruding part surrounds the clamping sleeve body, the clamping sleeve body is sleeved on the second pipe, and the protruding part is clamped in the clamping groove; the sealing ring is arranged between the sealing ring mounting section and the outer wall of the corresponding second pipe in the radial direction, and the sealing ring simultaneously abuts against the connecting end face and the clamping sleeve of the first pipe in the axial direction.
In a recommended embodiment, the cross section of the clamping sleeve mounting section is an inclined plane, the cross section of the clamping sleeve body is triangular, and the inclined edge of the triangle is attached to the inclined plane of the clamping sleeve mounting section. The clamping sleeve is generally made of hard materials, such as stainless steel and the like.
In a preferred embodiment, the cross section of the slot is rectangular, the cross section of the protrusion is also rectangular, and the protrusion is adapted to the slot.
In a preferred embodiment, the sealing ring is in a compressed state. The material of the sealing ring is typically an elastic material, such as rubber or the like.
In a recommended embodiment, a circular second groove is formed in the connecting end surface of the second pipe; a circular first groove is arranged on the connecting bottom surface of the inner diameter expansion part; the first groove and the second groove correspond to each other and form a communicating cavity together, the pipeline connecting structure further comprises an auxiliary sealing ring, and the auxiliary sealing ring is installed and filled in the communicating cavity. The auxiliary sealing ring is usually made of rubber material, and the arrangement of the auxiliary sealing ring can further enhance the sealing effect.
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect: after the cup joint nut is screwed, the joint cover can firmly push up the sealing washer on the one hand and tightly in the connection terminal surface of first pipe, and on the other hand can firmly block the second pipe in the internal diameter expansion portion again through the cooperation of bellying and draw-in groove, the utility model discloses an each part closely cooperates, and not only simple structure, the leakproofness is good moreover.
Drawings
Fig. 1 is a schematic view of the connection structure of the present invention.
Fig. 2 is a schematic structural view of the first pipe.
Fig. 3 is a schematic structural view of a union nut.
Fig. 4 is a schematic structural view of the second tube.
Fig. 5 is a schematic structural view of the clamping sleeve.
Detailed Description
For further understanding of the present invention, the present invention will be described in detail with reference to the following examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.
Referring to fig. 1, 2, 3, 4 and 5, a pipeline connecting structure with improved structure includes a first pipe 1, a second pipe 2, a socket nut 3, a ring-shaped clamping sleeve 4 and a sealing ring 5.
Referring to fig. 2, the connection end portion of the first pipe 1 is provided with an external thread section 11, the inner wall of the first pipe 1 corresponding to the external thread section 11 is provided with an inner diameter expansion portion 12, the inner diameter expansion portion 12 includes a cylindrical inner diameter expansion wall 13 and a circular connection bottom surface 14, one end of the inner diameter expansion wall 13 extends to a connection end surface 15 of the first pipe 1, and the other end extends to the connection bottom surface 14. The connection bottom surface 14 of the inner diameter expansion part 12 is provided with a circular first groove 16.
Referring to fig. 4, an annular clamping groove 21 is formed in the outer wall of the second pipe 2, and the cross section of the clamping groove 21 is rectangular. The second tube 2 has a wall thickness that is the same as the radial length of the inner diameter-enlarged portion 12, i.e., the radial length of the connecting bottom surface 14. The connecting end surface 22 of the second pipe 2 is provided with a circular second groove 23, and the first groove 16 connected with the bottom surface 14 and the second groove 23 correspond to each other and form a communicating cavity together. Referring to fig. 1, the pipe connecting structure further includes an auxiliary sealing ring 6, and the auxiliary sealing ring 6 is installed and filled in the communicating cavity. The auxiliary sealing ring 6 is usually made of rubber material, and its arrangement can further enhance the sealing effect.
Referring to fig. 3, from right to left, the inner wall of the socket nut 3 includes an internal thread section 31, a horizontal seal ring installation section 32, a clamping sleeve installation section 33 and a horizontal small inner diameter section 34, which are connected in sequence, and the cross section of the clamping sleeve installation section 33 is an inclined plane.
Referring to fig. 5, the clamping sleeve 4 includes a circular clamping sleeve body 41 and a protruding portion 42, the protruding portion 42 surrounds the inner side surface of the clamping sleeve body 41, the cross section of the protruding portion 42 is rectangular, the cross section of the clamping sleeve body 41 is triangular, and the oblique side of the triangle is attached to the oblique side of the clamping sleeve mounting section 33. The clamping sleeve 4 is generally made of a hard material such as stainless steel.
Referring to fig. 1, the small inner diameter section 34 is sleeved on the second pipe 2, the connection end surface 22 of the second pipe 2 abuts against the connection bottom surface 14 of the inner diameter expansion part 12, and the inner thread section 31 is in threaded connection with the outer thread section 11; the joint sleeve 4 is arranged between the joint sleeve mounting section 33 and the outer wall of the corresponding second pipe 2, the second pipe is sleeved with the joint sleeve body 41, the protruding portion 42 is clamped into the clamping groove 21, and the protruding portion 42 is matched with the clamping groove 21 in size. The cross section of the sealing ring 5 is rectangular, the sealing ring 5 is radially arranged between the sealing ring mounting section 32 and the outer wall of the corresponding second pipe 2, and the sealing ring 5 is axially abutted against the connecting end surface 15 of the first pipe 1 and the clamping sleeve 4.
The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (5)
1. A pipeline connection structure with improved structure is characterized by comprising: the connecting end part of the first pipe is provided with an external thread section, the inner wall of the first pipe corresponding to the external thread section is provided with an inner diameter expansion part, the inner diameter expansion part comprises a cylindrical inner diameter expansion wall and a circular connecting bottom surface, one end of the inner diameter expansion wall extends to the connecting end surface of the first pipe, and the other end of the inner diameter expansion wall extends to the connecting bottom surface; a circular clamping groove is formed in the outer wall of the second pipe; the inner wall of the sleeve nut comprises an inner thread section, a sealing ring mounting section, a clamping sleeve mounting section and a small inner diameter section which are sequentially connected, the small inner diameter section is sleeved on the second pipe, the connecting end surface of the second pipe abuts against the connecting bottom surface of the inner diameter expansion part, and the inner thread section is in threaded connection with the outer thread section; the clamping sleeve is arranged between the clamping sleeve mounting section and the outer wall of the corresponding second pipe, the clamping sleeve comprises an annular clamping sleeve body and a protruding part, the protruding part surrounds the clamping sleeve body, the clamping sleeve body is sleeved on the second pipe, and the protruding part is clamped in the clamping groove; the sealing ring is arranged between the sealing ring mounting section and the outer wall of the corresponding second pipe in the radial direction, and the sealing ring simultaneously abuts against the connecting end face and the clamping sleeve of the first pipe in the axial direction.
2. A pipe connecting structure according to claim 1, wherein: the cross section of joint sleeve installation section is the inclined plane, the cross section of joint sleeve body is triangle-shaped, and the hypotenuse of triangle-shaped laminates in the inclined plane of joint sleeve installation section.
3. A structurally improved pipe connecting structure as set forth in claim 2, wherein: the cross section of draw-in groove is the rectangle, the cross section of bellying also is the rectangle to the bellying is with draw-in groove looks adaptation.
4. A structurally improved pipe connecting structure as set forth in claim 1, wherein: the seal ring is in a compressed state.
5. A structurally improved pipe connecting structure as set forth in claim 1, wherein: a circular second groove is formed in the connecting end face of the second pipe; a circular first groove is arranged on the connecting bottom surface of the inner diameter expansion part; the first groove and the second groove correspond to each other and form a communicating cavity together, the pipeline connecting structure further comprises an auxiliary sealing ring, and the auxiliary sealing ring is installed and filled in the communicating cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022122405.6U CN213064967U (en) | 2020-09-24 | 2020-09-24 | Pipeline connection structure with improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022122405.6U CN213064967U (en) | 2020-09-24 | 2020-09-24 | Pipeline connection structure with improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213064967U true CN213064967U (en) | 2021-04-27 |
Family
ID=75560613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022122405.6U Active CN213064967U (en) | 2020-09-24 | 2020-09-24 | Pipeline connection structure with improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213064967U (en) |
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2020
- 2020-09-24 CN CN202022122405.6U patent/CN213064967U/en active Active
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