CN212338473U - Hydraulic sealing joint - Google Patents
Hydraulic sealing joint Download PDFInfo
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- CN212338473U CN212338473U CN202021501590.3U CN202021501590U CN212338473U CN 212338473 U CN212338473 U CN 212338473U CN 202021501590 U CN202021501590 U CN 202021501590U CN 212338473 U CN212338473 U CN 212338473U
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- ring
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Abstract
The utility model discloses a hydraulic pressure sealing joint, include: a seal core and a lock, wherein: the sealing core comprises a main body part, a guide part and a hard sealing part, the diameter of the main body part is larger than that of the guide part, the main body part and the guide part are connected through the hard sealing part, and the side surface of the hard sealing part extends from the side surface edge of the main body part to the side surface edge of the guide part; the guide part is a cylinder and is matched with a middle counter bore of the joint female part; the side surface of the hard sealing part is matched with an external interface of the joint female piece; the locking piece is sleeved on the sealing core and is used for being fixed with the outer surface of the joint female piece. The hydraulic sealing joint adopting the technical scheme is easy to assemble, good in sealing effect and stable in sealing structure.
Description
Technical Field
The utility model relates to a mechanical device field especially relates to a hydraulic pressure sealing joint.
Background
The 24-degree taper sealing structure of the hydraulic pipe fitting commonly used at the present stage comprises an O-shaped sealing ring taper structure and a clamping sleeve type taper structure, wherein in the 24-degree taper structure, a joint female part and a locking piece can be commonly used, and the blocking and leaning structure of the locking piece can be adjusted according to corresponding specifications.
The O-shaped sealing ring is of a conical structure, and the sealing core is easy to axially deflect relative to the joint female part due to no forward direction of assembly, so that the assembly difficulty is high, and the sealing effect in the actual use process is poor; cutting ferrule taper structure, by the cutting ferrule laminating deformation between joint female member conical surface and the sealed core, form the double containment face (between cutting ferrule and the joint female member, between cutting ferrule and the sealed core), in the in-service use process, easily take place the cutting ferrule and not tight and lead to sealed inefficacy with the sealed core laminating, and the cutting ferrule structure itself is frivolous, and the toper of sealed face is inefficacy very easily, and sealed face inefficacy wantonly can lead to whole seal structure to lose efficacy.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing a hydraulic pressure sealing joint, easy assembly, sealed effect is better, and seal structure is stable.
The technical scheme is as follows: the utility model provides a hydraulic pressure sealing joint, include: a seal core and a lock, wherein:
the sealing core comprises a main body part, a guide part and a hard sealing part, the diameter of the main body part is larger than that of the guide part, the main body part and the guide part are connected through the hard sealing part, and the side surface of the hard sealing part extends from the side surface edge of the main body part to the side surface edge of the guide part;
the guide part is a cylinder and is matched with a middle counter bore of the joint female part;
the side surface of the hard sealing part is matched with an external interface of the joint female piece;
the locking piece is sleeved on the sealing core and is used for being fixed with the outer surface of the joint female piece.
Specifically, the side surface of the hard seal portion is a curved surface.
Specifically, in a portion where the hard seal portion and the joint female member contact each other, the hardness of the material of the hard seal portion is lower than the hardness of the material of the joint female member.
Specifically, the guide part is in clearance fit with a counter bore in the joint female part.
Specifically, still include: the sealing ring is sleeved on the guide part, and the part of the longitudinal section of the ring, which is in contact with the guide part, comprises a straight line.
Specifically, in the longitudinal section of the ring, a compression part for compressing after contacting with the joint female part accounts for 0-40% of the longitudinal section of the ring.
Specifically, in the longitudinal section of the ring, a compression part for compressing after contacting with the joint female part accounts for 15% -30% of the longitudinal section of the ring.
Specifically, the longitudinal section of the ring is quadrilateral.
Specifically, the longitudinal section of the ring is rectangular.
Specifically, the locking member is a nut for threaded engagement with the outer surface of the connector female member.
Has the advantages that: compared with the prior art, the utility model has the advantages of it is as follows showing: the assembly is easy, the sealing effect is better, and the sealing structure is stable.
Drawings
Fig. 1 is a schematic structural view of a hydraulic seal joint provided by the present invention;
fig. 2 is a schematic structural view of a part of the hydraulic sealing joint provided by the present invention;
fig. 3 is a longitudinal section of a seal ring of the hydraulic seal joint provided by the present invention;
1-sealing the core; 2-sealing ring; 3-a locking element; 4-a joint female; 5-a blocking structure; 6-a main body portion; 7-hard seal; 8-a guide; 9-external interface of the joint female member; 10-a counterbore in the joint female part; 11-the conical surface of the inner cavity of the external interface of the joint female part; 12-a sealed cavity; 13-longitudinal section of the ring; 14-the part of the longitudinal section of the ring that is in contact with the guide; 15-compression section.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 and fig. 2, they are respectively the structural schematic diagram of the hydraulic sealing joint provided by the present invention, and the local structural schematic diagram of the hydraulic sealing joint provided by the present invention.
The embodiment of the utility model provides a hydraulic pressure sealing joint is applied to 24 taper seal structure usually, but is not limited to 24 taper seal structure, through carrying out corresponding adjustment according to connecting female member 4 structure, also can be applied to other seal structure.
The embodiment of the utility model provides an in provide a hydraulic pressure sealing joint, include: a sealing core 1 and a locking piece 3, wherein: the seal core 1 comprises a main body part 6, a guide part 8 and a hard seal part 7, wherein the diameter of the main body part 6 is larger than that of the guide part 8, the main body part 6 and the guide part 8 are connected through the hard seal part 7, and the side surface of the hard seal part 7 extends from the side surface edge of the main body part 6 to the side surface edge of the guide part 8; the guide part 8 is a cylinder and is matched with a middle counter bore 10 of the joint female part 4; the side surface of the hard sealing part 7 is matched with an external interface 9 of the joint female member 4; the locking piece 3 is sleeved on the sealing core 1 and is used for being fixed with the outer surface of the joint female piece 4.
In practical implementation, the main body portion 6, the guide portion 8 and the hard seal portion 7 are generally integrally formed to form the seal core 1, and the seal core 1 is hollow for liquid to pass through.
In a specific implementation, the side surface of the hard seal part 7 extends from the side surface edge of the main body part 6 to the side surface edge of the guide part 8, that is, the side surfaces of the main body part 6, the hard seal part 7 and the guide part 8 are continuous.
In the embodiment of the present invention, the guiding portion 8 is in clearance fit with the middle counter bore 10 of the joint female member 4. The diameter of the cross section of the guide part 8 is smaller than or equal to the diameter of a counter bore 10 in the joint female part 4.
In specific implementation, the central counterbore 10 of the joint female part 4 is generally columnar, the guide part 8 is columnar corresponding to the central counterbore 10, the guide part 8 can be partially inserted into the central counterbore 10 in a manner shown in fig. 1 and 2, clearance fit (which may include a minimum clearance equal to zero) between the guide part 8 and the central counterbore 10 is realized, the axis of the guide part 8 and the axis of the central counterbore 10 can be kept on the same straight line, and the guide part 8 can be used as a forward assembly guide of the seal core 1, so that the condition that the seal core 1 is axially deviated relative to the joint female part 4 can be avoided in the assembly process of the seal core 1 and the joint female part 4, the assembly process steps can be simplified, and the specified requirements of assembly can be reduced.
In specific implementation, the side surface of the hard sealing part 7 is matched with the outer interface 9 of the joint female member 4, a closed ring line or a closed ring surface exists on the side surface of the hard sealing part 7 and is in contact with the inner cavity conical surface 11 of the outer interface 9 of the joint female member 4 (or is in contact with the edge of the outer interface 9 of the joint female member 4) to form a hard sealing structure, and the closed ring line or the closed ring surface can be abutted against the corresponding part of the joint female member 4 under the forward assembling guide of the sealing core 1, so that a gap which can cause leakage does not exist. The hard sealing structure is very stable, the center deflection is not easy to occur, and the sealing effect in actual use is better under the stable sealing structure.
In the concrete implementation, the clearance between the sealing core 1 and the conical surface 11 of the inner cavity of the joint female part 4 after the assembly is finished forms a sealing cavity 12, the longitudinal section of the sealing cavity 12 is approximately triangular, and the triangular structure has natural strong stability, so that the sealing cavity 12 has higher structural strength, the deformation of the sealing cavity 12 is reduced when the sealing cavity is subjected to the hard extrusion deformation of an external force, and the hard sealing structure is very stable.
In the specific implementation, the joint female member 4 and the locking member 3 can be used commonly, and the blocking structure 5 of the locking member 3 can be adjusted according to the corresponding specification, so that the hydraulic sealing joint can be applied to the joint female members 4 with different specifications.
In the embodiment of the present invention, the locking member 3 is a nut, and is used for the screw-thread fit with the outer surface of the joint female member 4.
In the embodiment of the present invention, the side of the hard sealing portion 7 is a curved surface.
In the specific implementation, compared with a plane, a curved surface is softer in transition, and an inclined plane has higher requirements on the processing technology, if a certain part or a certain point of the circumferential direction of the inclined plane cannot be contacted with the inner cavity conical surface 11 of the outer interface 9 of the joint female part 4, namely, a closed ring line does not exist on the side surface of the hard sealing part 7 or the ring line is not contacted with the inner cavity conical surface 11 of the outer interface 9 of the joint female part 4, so that a hard sealing structure is formed. The side face of the hard seal part 7 is a curved surface, so that the requirement on the processing technology is reduced.
In the embodiment of the present invention, in the portion where the hard sealing portion 7 and the joint female member 4 contact each other, the hardness of the material of the hard sealing portion 7 is lower than the hardness of the material of the joint female member 4.
In the specific implementation, since the hard seal portion 7 is made of the same material and the joint female member 4 is made of the same material, the hardness of the hard seal portion 7 is lower than that of the joint female member 4; on the other hand, if the contact portion is not made of the same material as the other portions of the whole body, the hardness of the material of the hard seal portion 7 is lower than that of the material of the joint female member 4 in the portion where the hard seal portion 7 and the joint female member 4 are in contact with each other.
In the concrete implementation, the material hardness of hard sealing portion 7 is less than the material hardness of female joint member 4, and in the assembling process, after hard sealing portion 7 contacted the extrusion with female joint member 4 inner chamber conical surface 11, the side of hard sealing portion 7 produced deformation more easily, and hard sealing portion 7 and female joint member 4 outer joint 9 inner chamber conical surface 11 laminating are inseparabler from this, promote seal structure stability and sealed effect. Simultaneously, the side surface of the hard sealing part 7 deforms, the sleeved sealing ring 2 cannot be influenced, and the whole sealing structure is very stable.
In particular implementation, through the experiment, the embodiment of the utility model provides a hard seal structure of hydraulic seal joint can realize in being suitable for adaptation structure standard ISO8434, respectively under the bearing pressure of light series operating pressure 30mpa and heavy series operating pressure 50mpa, the seal structure both sides all do not have the leakage, and the sub-assembly is whole to have very strong structural stability. And the sealing joint core can bear the pressure of light series 50MPA and heavy series 80MPA through tests, and has perfect safety redundancy.
The embodiment of the utility model provides an in, hydraulic seal connects still includes: and the sealing ring 2 is sleeved on the guide part 8, and a part 14 (a thickened part in fig. 3) in contact with the guide part 8 in a longitudinal section 13 of the ring comprises a straight line.
In the specific implementation, in the prior art, the longitudinal section 13 of the ring of the seal ring 2 is usually circular or oval, and in the assembling or actual use process, the seal ring 2 rolls and slides easily, so that the seal ring 2 and the conical surface 11 of the inner cavity of the outer interface 9 of the joint female part 4 are not in uniform contact, or the seal ring 2 is damaged, the seal structure is unstable, and the seal effect is poor. Referring to fig. 3, the contact part between the longitudinal section 13 of the ring of the sealing ring 2 and the guide part 8 includes a straight line, and the straight line part can increase the static contact area with the sealing core 1, increase the sealing area after being pressed, increase friction, reduce rolling and sliding, and ensure that the whole sealing structure is very stable.
In the embodiment of the present invention, the compression portion 15 compressed after contacting the female joint part 4 in the longitudinal section 13 of the ring occupies 0% -40% of the longitudinal section 13 of the ring.
In the embodiment of the present invention, the compression portion 15 for compressing after contacting with the joint female part 4 in the longitudinal section 13 of the ring occupies 15% -30%, preferably 20% -25% of the longitudinal section 13 of the ring.
In specific implementation, the area of the compressed part 15, which is compressed after being in contact with the inner cavity conical surface 11 of the joint female part 4, in the longitudinal section 13 accounts for the area of the longitudinal section 13 of the ring, so that the sealing area of the sealing ring 2, which is compressed after being in contact with the inner cavity conical surface 11 of the outer joint 9 of the joint female part 4, can be increased, and friction is increased. If the area percentage of 20% -25% is adopted, on the one hand, the sealing ring 2 cannot be damaged due to excessive compression, on the other hand, effective sealing area and sealing strength can be formed, the overall sealing effect is excellent, and the stability and the sealing effect of the overall sealing structure are improved.
In the embodiment of the present invention, the longitudinal section 13 of the ring is a quadrilateral.
In the embodiment of the present invention, the longitudinal section 13 of the ring is rectangular.
In specific implementation, compared with other longitudinal section shapes, the rectangle has lower requirements on processing technology and assembly, and meanwhile, the actual assembly and use effects are better, so that the optimal balance among the processing, assembly and use effects is achieved.
In specific implementation, the embodiment of the utility model provides a two-layer mutually independent seal structure of soft seal structure with hard seal structure and sealing washer 2, and two-layer seal structure all have very excellent sealed effect and extremely stable seal structure.
In specific implementation, because there is hard seal structure, the embodiment of the utility model provides a hydraulic seal connects when sealing washer 2 became invalid (damaged, ageing, condition such as ablation), can borrow by hard seal structure to continue to realize sealedly, when the emergent maintenance that finishes, changes sealing washer 2, can realize the double containment guarantee again.
Claims (10)
1. A hydraulic sealing joint, comprising: a seal core and a lock, wherein:
the sealing core comprises a main body part, a guide part and a hard sealing part, the diameter of the main body part is larger than that of the guide part, the main body part and the guide part are connected through the hard sealing part, and the side surface of the hard sealing part extends from the side surface edge of the main body part to the side surface edge of the guide part;
the guide part is a cylinder and is matched with a middle counter bore of the joint female part;
the side surface of the hard sealing part is matched with an external interface of the joint female piece;
the locking piece is sleeved on the sealing core and is used for being fixed with the outer surface of the joint female piece.
2. The hydraulic sealing joint of claim 1, wherein the sides of the hard seal are curved.
3. The hydraulic sealing joint of claim 2, wherein the hard seal portion and the joint female member contact each other at a portion where the hard seal portion is made of a material having a hardness lower than that of the joint female member.
4. The hydraulic sealing joint of claim 1, wherein the pilot is a clearance fit with a counterbore in the joint female member.
5. The hydraulic sealing joint of claim 1, further comprising: the sealing ring is sleeved on the guide part, and the part of the longitudinal section of the ring, which is in contact with the guide part, comprises a straight line.
6. The hydraulic sealing joint of claim 5, wherein a compression portion of a longitudinal section of the ring for compression after contact with a joint female member is 0% to 40% of the longitudinal section of the ring.
7. The hydraulic sealing joint of claim 6, wherein the compression portion of the longitudinal section of the ring for compression after contact with the joint female member is 15% to 30% of the longitudinal section of the ring.
8. The hydraulic sealing joint of claim 5, wherein the longitudinal cross-section of the collar is quadrilateral.
9. The hydraulic sealing joint of claim 8, wherein the longitudinal cross-section of the collar is rectangular.
10. The hydraulic sealing joint of any one of claims 1 to 9, wherein the locking member is a nut adapted to engage with a thread on an outer surface of the joint female member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021501590.3U CN212338473U (en) | 2020-07-27 | 2020-07-27 | Hydraulic sealing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021501590.3U CN212338473U (en) | 2020-07-27 | 2020-07-27 | Hydraulic sealing joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212338473U true CN212338473U (en) | 2021-01-12 |
Family
ID=74081034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021501590.3U Active CN212338473U (en) | 2020-07-27 | 2020-07-27 | Hydraulic sealing joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212338473U (en) |
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2020
- 2020-07-27 CN CN202021501590.3U patent/CN212338473U/en active Active
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