CN210014008U - Anti-torsion mechanical sealing structure - Google Patents
Anti-torsion mechanical sealing structure Download PDFInfo
- Publication number
- CN210014008U CN210014008U CN201920639924.4U CN201920639924U CN210014008U CN 210014008 U CN210014008 U CN 210014008U CN 201920639924 U CN201920639924 U CN 201920639924U CN 210014008 U CN210014008 U CN 210014008U
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- China
- Prior art keywords
- pipe fitting
- packing ring
- swivel nut
- connecting hole
- cutting ferrule
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Abstract
The utility model discloses a prevent turning round mechanical type seal structure, its characterized in that: including pipe fitting, locking swivel nut, prevent changeing packing ring, sealed cutting ferrule, set up the connecting hole in the connecting piece, the connecting hole includes screw hole and bell mouth, the pipe fitting passes the connecting hole, and the locking swivel nut, prevent changeing packing ring, sealed cutting ferrule all overlap on the pipe fitting and lie in between connecting hole and pipe fitting, the locking swivel nut, prevent changeing packing ring and pipe fitting all are clearance fit, and can extrude sealed cutting ferrule card income bell mouth through preventing changeing packing ring when locking swivel nut and screw hole revolve the closure to seal up and the chucking pipe fitting with the gap between pipe fitting and bell mouth.
Description
Technical Field
The utility model relates to a heating tube sealing structure, in particular to a torsion-proof mechanical sealing structure, which is used for fluid media (containing normal temperature, low temperature, medium temperature and high temperature) in three states of normal pressure, low pressure and high pressure in a pipeline or a container.
Background
Although the first generation of flange welding-free sealing technology (mechanical sealing) solves the problems of replacement of welding process (as shown in fig. 4) and no leakage of high-pressure fluid, the problem of distortion and deformation of the heating tube caused by rotation and locking of the threaded sleeve in the assembling process cannot be avoided. In order to solve the problem that the distortion and deformation of the pipe fitting (containing an electrothermal element) in the first generation of mechanical sealing technology are difficult to correct, I developed an anti-distortion mechanical sealing technology, which achieves the purpose of locking and sealing but avoiding the distortion and deformation of the pipe fitting (and the springback in use in the future) by adding an anti-rotation gasket between a sealing cutting sleeve and a locking threaded sleeve.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a prevent turning round mechanical type seal structure.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides an anti-twist mechanical type seal structure which characterized in that: including pipe fitting, locking swivel nut, prevent changeing packing ring, sealed cutting ferrule, set up the connecting hole on the connecting piece, the connecting hole includes screw hole and bell mouth, the pipe fitting passes the connecting hole, and locks the swivel nut, prevents changeing packing ring, sealed cutting ferrule and all overlap on the pipe fitting and lie in between connecting hole and pipe fitting, locking swivel nut, prevent changeing packing ring and pipe fitting all are clearance fit, and can extrude sealed cutting ferrule card income bell mouth through preventing changeing packing ring when locking swivel nut and screw hole revolve the closure to seal up and the chucking pipe fitting with the gap between pipe fitting and bell mouth.
The anti-rotation washer is provided with an annular groove, the annular groove is formed by surrounding a bottom surface and a side surface, and the side surface and the bottom surface are intersected to form an obtuse angle.
And an inner chamfer is arranged at the bottom end of the locking screw sleeve.
The inner wall of the sealing cutting sleeve is provided with sawteeth.
The utility model has the advantages that: increase between locking swivel nut and sealed cutting ferrule and prevent changeing the packing ring, avoid the swivel nut directly to extrude sealed cutting ferrule, sealed cutting ferrule has eliminated the rotary motion that produces because of the locking of swivel nut under preventing changeing the effect of packing ring, has avoided the distortion that the heating tube caused because of cutting ferrule locking is rotatory, and the heating tube is not hard up because of the resilience that distortion that causes when having avoided the assembly and use probably to appear in the future, has created the condition for the heating tube not damaged during secondary assembly.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a structural view of the present invention;
FIG. 2 is an enlarged view at A of FIG. 1;
FIG. 3 is an enlarged cross-sectional view of the anti-rotation washer;
fig. 4 is a view of the old structure of the present invention.
Detailed Description
Referring to fig. 1 to 3, the utility model discloses an anti-twisting mechanical sealing structure, which comprises a pipe fitting 1, a locking screw sleeve 2, an anti-rotating gasket 3, a sealing cutting sleeve 4 and a connecting hole arranged in a connecting piece 5, wherein the pipe fitting 1 is an electric heating pipe, the connecting piece 5 is a flange, the connecting hole comprises a threaded hole and a tapered hole 6, the pipe fitting 1 penetrates through the connecting hole, a gap is formed between the pipe fitting 1 and the inner wall of the connecting hole, therefore, the locking threaded sleeve 2, the anti-rotation washer 3 and the sealing cutting sleeve 4 are sequentially sleeved on the pipe fitting 1 and positioned between the connecting hole and the pipe fitting 1, the locking threaded sleeve 2, the anti-rotation washer 3 and the pipe fitting 1 are in clearance fit, therefore, the locking screw sleeve 2 and the anti-rotation gasket 3 cannot drive the pipe fitting 1 to rotate when rotating, and the locking screw sleeve 2 and the threaded hole can be clamped into the tapered hole 6 by extruding the sealing clamping sleeve 4 through the anti-rotation gasket 3 when rotating, so that a gap between the pipe fitting 1 and the tapered hole 6 is sealed and the pipe fitting 1 is clamped.
In the structure, the anti-rotation gasket 3 is additionally arranged between the sealing sleeve 4 and the locking screw sleeve 2, because the anti-rotation gasket 3 is smooth and flat in surface and high in hardness, when the locking screw sleeve 2 is locked, relative sliding can be generated between the sealing sleeve 4 and the anti-rotation gasket 3, even if the sealing sleeve 4 is under the pressure action of the anti-rotation gasket 3, the sealing sleeve cannot rotate along with the anti-rotation gasket and only can move axially downwards, the distortion and deformation of the heating tube caused by locking rotation of the sealing sleeve 4 are avoided, the purpose of locking sealing is achieved by the sealing sleeve 4, the damage in the secondary assembly process is effectively reduced, and the correction difficulty is reduced.
As shown in the figure, the bottom end of the locking screw sleeve 2 is provided with an inner chamfer 7, so that the locking screw sleeve 2 is convenient to be sleeved on the pipe fitting 1, and the inner diameter of the locking screw sleeve 2 cannot be too large due to space limitation, so that the inner chamfer 7 is convenient to assemble; meanwhile, the anti-rotation washer 3 is provided with an annular groove 8, the annular groove 8 is formed by enclosing a bottom surface 9 and a side surface 10, the side surface 10 and the bottom surface 9 are intersected to form an obtuse angle, the bottom end surface of the locking screw sleeve 2 is in contact extrusion with the bottom surface 9 of the annular groove 8, the inner chamfer 7 surface is in contact extrusion with the side surface 10 of the annular groove 8, the anti-rotation washer 3 is ensured to be coaxial with the locking screw sleeve 2 through the contact of the inner chamfer 7 surface and the side surface 10 of the annular groove 8, and therefore the anti-rotation washer 3 is ensured not to move radially to abrade a threaded hole or the surface of the pipe fitting 1 in the rotation.
As shown in the figure, be equipped with the sawtooth on the inner wall of sealed cutting ferrule 4, can make sealed cutting ferrule 4 and pipe fitting 1 card more tightly through the sawtooth to joint strength has been improved.
The anti-twisting mechanical sealing structure provided by the embodiment of the present invention is introduced in detail, and the principle and the implementation of the present invention are explained by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (4)
1. The utility model provides an anti-twist mechanical type seal structure which characterized in that: including pipe fitting, locking swivel nut, prevent changeing packing ring, sealed cutting ferrule, set up the connecting hole on the connecting piece, the connecting hole includes screw hole and bell mouth, the pipe fitting passes the connecting hole, and locks the swivel nut, prevents changeing packing ring, sealed cutting ferrule and all overlap on the pipe fitting and lie in between connecting hole and pipe fitting, locking swivel nut, prevent changeing packing ring and pipe fitting all are clearance fit, and can extrude sealed cutting ferrule card income bell mouth through preventing changeing packing ring when locking swivel nut and screw hole revolve the closure to seal up and the chucking pipe fitting with the gap between pipe fitting and bell mouth.
2. An anti-twist mechanical seal according to claim 1, characterized in that: the anti-rotation washer is provided with an annular groove, the annular groove is formed by surrounding a bottom surface and a side surface, and the side surface and the bottom surface are intersected to form an obtuse angle.
3. An anti-twist mechanical seal according to claim 1, characterized in that: and an inner chamfer is arranged at the bottom end of the locking screw sleeve.
4. An anti-twist mechanical seal according to claim 1, characterized in that: the inner wall of the sealing cutting sleeve is provided with sawteeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920639924.4U CN210014008U (en) | 2019-05-07 | 2019-05-07 | Anti-torsion mechanical sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920639924.4U CN210014008U (en) | 2019-05-07 | 2019-05-07 | Anti-torsion mechanical sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210014008U true CN210014008U (en) | 2020-02-04 |
Family
ID=69316419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920639924.4U Active CN210014008U (en) | 2019-05-07 | 2019-05-07 | Anti-torsion mechanical sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210014008U (en) |
-
2019
- 2019-05-07 CN CN201920639924.4U patent/CN210014008U/en active Active
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