CN218093605U - Threaded connection structure - Google Patents
Threaded connection structure Download PDFInfo
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- CN218093605U CN218093605U CN202222017917.5U CN202222017917U CN218093605U CN 218093605 U CN218093605 U CN 218093605U CN 202222017917 U CN202222017917 U CN 202222017917U CN 218093605 U CN218093605 U CN 218093605U
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- screw
- sealing ring
- sealing
- counter bore
- counter sink
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Abstract
The utility model discloses a threaded connection structure, include: the compressor end cover, the mouth circle sealing member, the screw, first sealing washer and second sealing washer, the number of mouth circle sealing member, the screw, first sealing washer and second sealing washer is one at least, be provided with a screw hole on the compressor end cover, the screw is the cylinder head screw, mouth circle sealing member is provided with a cylindricality counter sink that runs through, the counter sink end of cylindricality counter sink is located the top of mouth circle sealing member, the middle section of screwhead portion is provided with the second and seals the annular around head circumference, the outer lane diameter of second sealing washer is greater than the counter sink internal diameter of cylindricality counter sink, the counter sink internal diameter of cylindricality counter sink is greater than the diameter of screwhead portion, the counter sink degree of depth of cylindricality counter sink is greater than the height of screwhead portion, the diapire of second sealing ring groove can be hugged closely to the inner circle of second sealing washer, the outer lane of second sealing washer can be hugged closely the lateral wall of the counter sink of cylindricality counter sink. The utility model discloses the leakproofness is good, replaceability is high and it is impaired to reduce the screw thread.
Description
Technical Field
The utility model relates to a connection structure especially relates to a threaded connection structure.
Background
In modern production, centrifugal compressor unit is often used for obtaining the gas of certain pressure, one of the core equipment in modern chemical production field, install the mouth circle seal at the inlet end cover, can form certain seal clearance with the centrifugal impeller of rotatory work, be important spare part, and after the long-term scouring action of high velocity gas stream, the sealed body of mouth circle seal can receive wearing and tearing, lead to seal clearance grow and deviate from the design scope, consequently need regularly change the mouth circle and seal, in the present common structure, inlet end cover and mouth circle are sealed usually with bolt interconnect, be used for connecting the sealed internal thread of mouth circle and the external screw thread of connecting bolt on the inlet end cover, easy in use touches working medium, and washed away, corruption or serious scale deposit leads to damaging, bring very big difficulty for maintenance operations such as dismouting, change of mouth circle seal.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model provides a threaded connection structure, this threaded connection structure have that the leakproofness is good, the replaceability is high and reduce the impaired advantage of screw thread.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: a threaded connection, comprising: the compressor end cover, the mouth ring sealing piece, the screw, a first sealing ring and a second sealing ring, the mouth ring sealing piece, the screw, the first sealing ring and the second sealing ring are at least one in number, the first sealing ring and the second sealing ring are provided with elasticity, a threaded hole is formed in the compressor end cover, the screw is a cylindrical head screw, the screw comprises a root part with external threads and a head part with a diameter larger than the root part, the mouth ring sealing piece is provided with a penetrating cylindrical counter bore, the counter bore of the cylindrical counter bore is located at the top end of the mouth ring sealing piece, a first sealing ring groove is formed in the bottom end of the mouth ring sealing piece, the first sealing ring groove surrounds the cylindrical counter bore, one end of the first sealing ring can be clamped into the first sealing ring groove, the other end of the first sealing ring protrudes out of the first sealing ring groove, a second sealing ring groove is formed in the circumferential direction of the head part around the head part, the inner ring of the second sealing ring can be clamped into the second sealing ring groove, the outer ring diameter of the second sealing ring groove is larger than the counter bore of the screw head part, the screw can be screwed into the screw head part after the screw head part penetrates out of the cylindrical counter bore and tightly attached to the cylindrical counter bore, the screw head hole, the root part of the screw can be tightly attached to the bottom wall of the screw head sealing ring, and the bottom wall of the screw head part of the screw.
Optionally, the first sealing ring and the second sealing ring are both made of rubber.
Optionally, the vertical distance from the counterbore side wall of the cylindrical counterbore to the screw head is 0.15 mm-0.2 mm.
The utility model has the beneficial technical effects that: the threaded connection structure includes: the compressor end cover, the mouth circle sealing member, the screw, first sealing washer and second sealing washer, will mouthful circle sealing member and compressor end cover locking through the screw, because be provided with first sealing washer between mouth circle sealing member and the compressor end cover, be provided with the second sealing washer between screw head and the cylindricality counter bore lateral wall, the screw hole is unable external environment of contacting this moment, isolated with screw hole and external environment through two sealing washers, so isolated the medium and avoided the medium to get into the screw hole, thereby prevented the internal thread of medium destruction screw hole and the external screw thread of screw root, the loss of screw thread has been reduced. The screw thread sealing device has the advantages of good sealing performance, high replaceability and reduced thread damage.
Drawings
FIG. 1 is an overall cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of the compressor head cover of the present invention;
FIG. 3 is a cross-sectional view of the lip seal of the present invention;
fig. 4 is a cross-sectional view of the screw of the present invention;
wherein:
1. a compressor end cover; 11. A threaded hole; 2. A mouth ring seal;
21. a cylindrical counter sink; 22. A first seal ring groove; 3. A screw;
31. a second seal ring groove; 4. A first seal ring; 5. And a second seal ring.
Detailed Description
In order to make the technical means of the present invention clearer and to implement the present invention according to the content of the specification, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples, which are used for illustrating the present invention and are not intended to limit the scope of the present invention.
The present embodiment describes in detail a threaded connection structure according to the present application, and as shown in fig. 1 to 4, the threaded connection structure includes: the sealing structure comprises a compressor end cover 1, a mouth ring sealing element 2, a screw 3, a first sealing ring 4 and a second sealing ring 5, the number of the mouth ring sealing element 2, the screw 3, the first sealing ring 4 and the second sealing ring 5 is at least one, the first sealing ring 4 and the second sealing ring 5 are elastic, a threaded hole 11 is formed in the compressor end cover 1, the screw 3 is a cylindrical head screw, in the embodiment, the head of the cylindrical head screw is cylindrical, and the screw 3 comprises a root part with an external thread and a head part with a diameter larger than that of the root part. The mouth ring sealing member 2 is provided with a through cylindrical counter bore 21, the cylindrical counter bore 21 in this embodiment is a through hole with a cylindrical counter bore, the counter bore end of the cylindrical counter bore 21 is located at the top end of the mouth ring sealing member 2, and the bottom end of the mouth ring sealing member 2 is provided with a first sealing ring groove 22. The first sealing ring groove 22 surrounds the cylindrical counter sink 21, one end of the first sealing ring 4 can be clamped into the first sealing ring groove 22, and the other end of the first sealing ring 4 protrudes out of the first sealing ring groove 22. The middle section of the head of the screw 3 is provided with a second sealing ring groove 31 around the circumference of the head, the inner ring of the second sealing ring 5 can be clamped into the second sealing ring groove 31, the diameter of the outer ring of the second sealing ring 5 is larger than the inner diameter of a counter bore of the cylindrical counter bore 21, the root of the screw 3 can penetrate out of the cylindrical counter bore 21 and then is screwed into the threaded hole 11 on the compressor end cover 1, the inner diameter of the counter bore of the cylindrical counter bore 21 is larger than the diameter of the head of the screw 3, and the depth of the counter bore of the cylindrical counter bore 21 is larger than the height of the head of the screw 3. After the root of the screw 3 is screwed into the threaded hole 11, the bearing surface of the head of the screw 3 can be tightly attached to the bottom surface of the counterbore of the cylindrical counterbore 21, in this embodiment, the bearing surface refers to the surface of the head of the screw which is tightly attached to the fixed part, the two ends of the first sealing ring 4 can be tightly attached to the bottom wall of the first sealing ring groove 22 and the surface of the compressor end cover 1 respectively, the inner ring of the second sealing ring 5 can be tightly attached to the bottom wall of the second sealing ring groove 31, and the outer ring of the second sealing ring 5 can be tightly attached to the side wall of the counterbore of the cylindrical counterbore 21. When the sealing device is used, the mouth ring sealing element 2 and the compressor end cover 1 are locked through the screw 3, the first sealing ring 4 is arranged between the mouth ring sealing element 2 and the compressor end cover 1, and the second sealing ring 5 is arranged between the head of the screw 3 and the side wall of the cylindrical counter bore 21. At this moment, the threaded hole 11 cannot be in contact with the external environment, and the threaded hole 11 and the external environment are isolated by the two sealing rings, so that a medium is isolated to prevent the medium from entering the threaded hole 11. Thereby preventing the medium from damaging the internal thread of the threaded hole 11 and the external thread at the root of the screw 3 and reducing the loss of the thread. The screw thread sealing device has the advantages of good sealing performance, high replaceability and reduced thread damage.
Optionally, in this embodiment, the first sealing ring 4 and the second sealing ring 5 are made of rubber, and in this embodiment, the first sealing ring 4 and the second sealing ring 5 are both O-shaped rubber sealing rings commonly found in the market.
In the embodiment, optionally, the vertical distance from the counterbore side wall of the cylindrical counterbore 21 to the head of the screw 3 is 0.15 mm-0.2 mm.
The threaded connection structure in the embodiment has the advantages of good sealing performance, high replaceability and reduced thread damage.
Claims (3)
1. A threaded connection, comprising: the sealing structure comprises a compressor end cover (1), a mouth ring sealing piece (2), a screw (3), a first sealing ring (4) and a second sealing ring (5), wherein the number of the mouth ring sealing piece (2), the screw (3), the first sealing ring (4) and the second sealing ring (5) is at least one, the first sealing ring (4) and the second sealing ring (5) have elasticity, a threaded hole (11) is formed in the compressor end cover (1), the screw (3) is a cylindrical head screw, the screw (3) comprises a root part with an external thread and a head part with a diameter larger than that of the root part, the mouth ring sealing piece (2) is provided with a through cylindrical counter bore (21), the counter bore end of the cylindrical counter bore (21) is positioned at the top end of the mouth ring sealing piece (2), a first sealing ring groove (22) is formed in the bottom end of the mouth ring sealing piece (2), the first sealing ring groove (22) surrounds the cylindrical counter bore (21), one end of the first sealing ring (4) can be clamped into the first sealing ring groove (22), the other end of the first sealing ring (4) protrudes out of the first sealing ring groove (22), the second sealing ring (31) is clamped into the inner ring groove (31) of the second sealing ring groove (31), the root of the screw (3) can penetrate through the cylindrical counter bore (21) and then be screwed into the threaded hole (11) in the compressor end cover (1), the inner diameter of the counter bore of the cylindrical counter bore (21) is larger than the diameter of the head of the screw (3), the depth of the counter bore of the cylindrical counter bore (21) is larger than the height of the head of the screw (3), the bearing surface of the head of the screw (3) can be tightly attached to the bottom surface of the counter bore of the cylindrical counter bore (21) after the root of the screw (3) is screwed into the threaded hole (11), the two ends of the first sealing ring (4) can be tightly attached to the bottom wall of the first sealing ring groove (22) and the surface of the compressor end cover (1) respectively, the bottom wall of the second sealing ring groove (31) can be tightly attached to the inner ring of the second sealing ring (5), and the side wall of the counter bore of the cylindrical counter bore (21) can be tightly attached to the outer ring of the second sealing ring (5).
2. The threaded connection according to claim 1, characterized in that: the first sealing ring (4) and the second sealing ring (5) are made of rubber materials.
3. The threaded connection according to claim 1, characterized in that: the vertical distance between the side wall of the counter bore of the cylindrical counter bore (21) and the head of the screw (3) is 0.15-0.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222017917.5U CN218093605U (en) | 2022-08-02 | 2022-08-02 | Threaded connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222017917.5U CN218093605U (en) | 2022-08-02 | 2022-08-02 | Threaded connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218093605U true CN218093605U (en) | 2022-12-20 |
Family
ID=84483655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222017917.5U Active CN218093605U (en) | 2022-08-02 | 2022-08-02 | Threaded connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218093605U (en) |
-
2022
- 2022-08-02 CN CN202222017917.5U patent/CN218093605U/en active Active
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