Rotatable sealing structure

Abstract

The utility model relates to the field of sealing structures, in particular to a rotatable sealing structure which comprises a male head, a female head, a connecting sleeve, an inner side sealing ring, an outer side sealing ring and a compression spring. The butt joint section of the male head is inserted into the butt joint cavity of the female head, the inner side sealing ring is located between the inner wall face of the butt joint section of the male head and the inner wall face of the inner side of the butt joint cavity, and the outer side sealing ring is located between the outer wall face of the butt joint section of the male head and the inner wall face of the outer side of the butt joint cavity. The exposed part of the butt joint section of the male head and the butt joint section of the female head are positioned in the assembly channel of the connecting sleeve; the front end face of the first positioning protrusion of the male head makes contact with the end face of the outer wall of the butt joint cavity, and the front end face of the second positioning protrusion of the connecting sleeve makes contact with the rear end face of the butt joint section of the male head. The connecting sleeve is detachably connected with the connecting section of the female head, and the compression spring is located between the first positioning protrusion and the second positioning protrusion. According to the sealing structure, the sealing effect can be improved, the sealing structure can adapt to multiple times of insertion and extraction, and parts of the sealing structure can rotate.

Description

Technical Field

[0001] This application relates to the field of sealing structures, and more particularly to a rotatable sealing structure. Background Technology

[0002] Sealing can generally be divided into hard seals and soft seals. A hard seal refers to a sealing method achieved through the tight contact of two metal surfaces. Both sides of the sealing pair are made of metal or other hard materials, such as stainless steel or copper, which work together to form a seal. This tight contact is similar to an overlap, thus preventing media leakage. A soft seal mainly utilizes the elastic deformation of soft materials (such as rubber or plastic) to achieve a seal. One side of the sealing pair is metal, and the other side is a soft material.

[0003] However, hard seals work by applying force to cause plastic deformation on both sides of the sealing pair. But if this structure is broken and then reconnected, the two sides of the sealing pair are made of metal or other hard materials. Therefore, the two sides of the sealing pair are easily deformed by the medium and trapped particles, which can easily lead to bite marks on the sealing surface, resulting in poor sealing. The sealing effect will be weakened, and the sealing structure needs to be replaced after multiple uses.

[0004] For soft-seal structures, during the insertion of one sealing member into another, the soft-seal structure (e.g., O-ring) between the two sealing members may fail (e.g., deform or be damaged). However, even if the soft-seal structure fails, it cannot be known whether it has failed because it is inserted into the other sealing member along with the first one. To know whether the soft-seal structure has failed, the sealing member must be pulled out to check the soft-seal structure, and then the sealing member is reinserted. However, the state of the soft-seal structure cannot be known after reinsertion, so the sealing effect of the soft-seal structure cannot be well guaranteed.

[0005] In addition, regardless of whether it is a hard seal or a soft seal, the components of the sealing structure cannot be rotated after the sealing structure is connected, which limits the application scenarios of the sealing structure.

[0006] Therefore, how to improve the sealing effect, make the sealing structure adaptable to multiple insertions and removals for repeated use, and enable the components of the sealing structure to rotate, thereby expanding the application scenarios of the sealing structure, are technical problems that urgently need to be solved by those skilled in the art. Utility Model Content

[0007] This application provides a rotatable sealing structure to improve the sealing effect, and to make the sealing structure adaptable to multiple insertions and removals for repeated use, and to enable rotation between the components of the sealing structure, thereby expanding the application scenarios of the sealing structure.

[0008] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0009] A rotatable sealing structure includes: a male head, a female head, a connecting sleeve, an inner sealing ring, an outer sealing ring, and a compression spring; wherein, a mating cavity is formed within the wall of the mating section of the female head, and the opening of the mating cavity is located on the mating end face of the female head, and the mating section of the male head is inserted into the mating cavity through the opening of the mating cavity; the inner sealing ring and the outer sealing ring are located in the mating cavity, and the inner sealing ring is located between the inner wall surface of the mating section of the male head and the inner wall surface of the mating cavity of the female head, and the outer sealing ring is located between the outer wall surface of the mating section of the male head and the outer wall surface of the mating cavity of the female head; the connecting sleeve has an assembly channel extending through both ends, and the exposed portion of the mating section of the male head and the mating section of the female head are both located within the mating cavity. Within the assembly channel of the connecting sleeve; the outer wall surface of the mating section of the male connector has a first positioning protrusion extending outward, and the first positioning protrusion is farther away from the mating end face of the male connector than the first mounting groove. The front end face of the first positioning protrusion contacts the end face of the outer wall of the mating cavity of the female connector; the positioning end of the connecting sleeve extends inward with a second positioning protrusion, and the front end face of the second positioning protrusion contacts the rear end face of the mating section of the male connector; the connecting section of the connecting sleeve and the female connector is detachably connected, and a compression spring is located between the first positioning protrusion and the second positioning protrusion. The compression spring presses the front end face of the first positioning protrusion against the end face of the outer wall of the mating cavity of the female connector and presses the front end face of the second positioning protrusion against the rear end face of the mating section of the male connector.

[0010] In the rotatable sealing structure described above, preferably, the inner diameter of the mating section of the male connector is larger than the inner diameter of the other pipe sections of the male connector.

[0011] In the rotatable sealing structure described above, preferably, the outer diameter of the outer wall of the mating cavity of the female head is larger than the outer diameter of the other pipe sections of the female head, and the inner diameter of the inner wall of the mating cavity of the female head is equal to the inner diameter of the other pipe sections of the female head and the inner diameter of the other pipe sections of the male head.

[0012] In the rotatable sealing structure described above, preferably, the outer wall surface of the mating section of the male head has an inwardly recessed first mounting groove, and a portion of the outer sealing ring is located within the first mounting groove.

[0013] In the rotatable sealing structure described above, preferably, the inner wall surface of the mating cavity of the female head has an inwardly recessed second mounting groove, and a portion of the inner sealing ring is located within the second mounting groove.

[0014] In the rotatable sealing structure described above, preferably, the outer wall surface of the male connector's mating section has a plurality of inwardly recessed first mounting grooves, each of which is provided with an outer sealing ring; and / or the inner wall surface of the female connector's mating cavity has a plurality of inwardly recessed second mounting grooves, each of which is provided with an inner sealing ring.

[0015] In the rotatable sealing structure described above, preferably, the connection between the outer wall surface of the male connector's mating section and the male connector's mating end face forms a chamfer, and the connection between the end face of the inner wall of the female connector's mating cavity and the inner wall surface of the female connector's mating cavity forms a chamfer.

[0016] In the rotatable sealing structure described above, preferably, the chamfers of both the male and female heads are rounded / beveled.

[0017] In the rotatable sealing structure described above, preferably, the inner surface of the connecting sleeve has an internal thread, the outer wall surface of the mating cavity of the female head has an external thread, and the internal thread of the connecting sleeve is threadedly connected to the external thread of the female head to achieve a detachable connection between the connecting sleeve and the female head.

[0018] In the rotatable sealing structure described above, preferably, the outer surface of the first positioning protrusion is lower than the outer wall surface of the mating cavity of the female head.

[0019] Compared with the above-mentioned background technology, the rotatable sealing structure of this application can improve the sealing effect, and make the sealing structure adaptable to multiple insertions and removals for repeated use, and enable the components of the sealing structure to rotate, thereby expanding the application scenarios of the sealing structure. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a perspective view of the rotatable sealing structure provided in the embodiments of this application;

[0022] Figure 2 This is a cross-sectional view of the rotatable sealing structure provided in an embodiment of this application;

[0023] Figure 3 This is a perspective view of the female head of the rotatable sealing structure provided in the embodiments of this application;

[0024] Figure 4This is a cross-sectional view of the female head of the rotatable sealing structure provided in the embodiments of this application;

[0025] Figure 5 This is a perspective view of the male end of the rotatable sealing structure provided in the embodiments of this application;

[0026] Figure 6 This is a cross-sectional view of the male end of the rotatable sealing structure provided in the embodiments of this application;

[0027] Figure 7 This is a perspective view of the male end and connecting sleeve of the rotatable sealing structure provided in the embodiments of this application;

[0028] Figure 8 This is a cross-sectional view of the male end and connecting sleeve of the rotatable sealing structure provided in the embodiments of this application. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. Additionally, spatial relationship terms such as "upper," "lower," "left," "right," "front," and "rear" are used for ease of description to explain the positional relationship between two components. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0030] like Figures 1 to 8 As shown, this application provides a rotatable sealing structure, including: a male head 110, a female head 120, a connecting sleeve 130, an inner sealing ring 140, an outer sealing ring 150, and a compression spring 160.

[0031] The male connector 110 has a flow channel that runs through both ends, and the female connector 120 has a flow channel that runs through both ends. After the docking section of the male connector 110 and the docking section of the female connector 120 are connected, the medium flows through the flow channels of the male connector 110 and the female connector 120.

[0032] A mating cavity is formed inside the pipe wall of the mating section of the female head 120, and the opening of the mating cavity is located on the mating end face of the female head 120; the mating section of the male head 110 is inserted into the mating cavity of the female head 120 from the opening of the mating cavity; the inner sealing ring 140 and the outer sealing ring 150 are located in the mating cavity of the female head 120, and the inner sealing ring 140 is located between the inner wall surface of the mating section of the male head 110 and the inner inner wall surface of the mating cavity of the female head 120, and the outer sealing ring 150 is located between the outer wall surface of the mating section of the male head 110 and the outer inner wall surface of the mating cavity of the female head 120.

[0033] Optionally, the wall of the mating section of the male connector 110 is flared outwards, meaning the inner diameter of the mating section of the male connector 110 is larger than the inner diameter of the other sections of the male connector 110. This ensures that after the mating section of the male connector 110 is inserted into the mating cavity of the female connector 120, the inner diameter of the other sections of the male connector 110 is equal to the inner diameter of the mating section of the female connector 120, thus ensuring a smooth and flat inner wall of the flow channel. Alternatively, the outer wall of the mating section of the male connector 110 has an inwardly recessed first mounting groove, with a portion of the outer sealing ring 150 located within this groove. This provides a certain degree of restraint for the outer sealing ring 150, preventing displacement or deformation of the outer sealing ring 150 when the mating section of the male connector 110 is inserted into the mating cavity of the female connector 120. Alternatively, the outer wall surface of the mating section of the male connector 110 has multiple inwardly recessed first mounting grooves, each of which is provided with an outer sealing ring 150, thereby achieving sealing through multiple outer sealing rings 150 and improving sealing performance.

[0034] Optionally, the outer wall of the mating cavity of the female connector 120 expands outward, meaning the outer diameter of the outer wall of the mating cavity of the female connector 120 is larger than the outer diameter of the other pipe sections of the female connector 120. Meanwhile, the inner wall of the mating cavity of the female connector 120 remains flush with the other pipe sections of the female connector 120, meaning the inner diameter of the inner wall of the mating cavity of the female connector 120 is equal to the inner diameter of the other pipe sections of the female connector. Thus, after the mating section of the male connector 110 is inserted into the mating cavity of the female connector 120, it can be ensured that the inner diameter of the mating section of the female connector 120 and other pipe sections are equal to the inner diameter of the other pipe sections of the male connector 110, thereby ensuring that the inner wall of the flow channel is flat and smooth. Optionally, the inner wall surface of the mating cavity of the female head 120 has an inwardly recessed second mounting groove, and a portion of the inner sealing ring 140 is located within the second mounting groove, thereby providing a certain limiting effect on the inner sealing ring 140 and preventing displacement or deformation of the inner sealing ring 140 when the mating section of the male head 110 is inserted into the mating cavity of the female head 120. Alternatively, the inner wall surface of the mating cavity of the female head 120 has multiple inwardly recessed second mounting grooves, each containing an inner sealing ring 140, thus enabling sealing through multiple inner sealing rings 140 and improving sealing performance.

[0035] Furthermore, a chamfer is formed at the connection between the outer wall surface of the mating section of the male connector 110 and the mating end face of the male connector 110, and a chamfer is formed at the connection between the end face of the inner wall of the mating cavity of the female connector 120 and the inner wall surface of the mating cavity of the female connector 120. Optionally, the chamfers of the male connector 110 and the female connector 120 can be either rounded or beveled.

[0036] The connecting sleeve 130 has an assembly channel extending through both ends. The exposed portion of the mating section of the male head 110 and the mating section of the female head 120 are both located within the assembly channel of the connecting sleeve 130. The outer wall surface of the mating section of the male head 110 has a first positioning protrusion extending outward, and the first positioning protrusion is farther away from the mating end face of the male head 110 relative to the first mounting groove. After the mating section of the male head 110 is inserted into the mating cavity of the female head 120, the front end face of the first positioning protrusion contacts the end face of the outer wall of the mating cavity of the female head 120. The positioning end of the connecting sleeve 130 extends inward with a second positioning protrusion, and the front end face of the second positioning protrusion contacts the rear end face of the mating section of the male head 110. The connecting sleeve 130 and the female head 120 are detachably connected, and a compression spring is used. Spring 160 is located between the first positioning protrusion and the second positioning protrusion. Under the elastic force of spring 160, the front end face of the first positioning protrusion can be pressed against the end face of the outer wall of the mating cavity of the female head 120, and the front end face of the second positioning protrusion can be pressed against the rear end face of the mating section of the male head 110. After the connecting sleeve 130 is connected and engaged with the female head 120, the male head 110 cannot be dislodged under the pressure of spring 160. The male head 110 and the female head 120 can rotate relative to each other. During the rotation, the inner sealing ring 140 and the outer sealing ring 150 are used for sealing. Therefore, while ensuring that the male head 110 and the female head 120 are firmly connected and tightly sealed, the male head 110 can rotate relative to the female head 120.

[0037] Optionally, the inner surface of the connecting sleeve 130 has an internal thread, and the outer wall surface of the mating cavity of the female head 120 has an external thread. The internal thread of the connecting sleeve 130 is threadedly connected to the external thread of the female head 120, thereby realizing a detachable connection between the connecting sleeve 130 and the female head 120. Alternatively, the outer surface of the first positioning protrusion is lower than the outer wall surface of the mating cavity of the female head 120 to avoid the first positioning protrusion obstructing the connection between the connecting sleeve 130 and the female head 120, and also to facilitate the rotation of the male head 110 relative to the female head 120.

[0038] When using the rotatable sealing structure of this application, first place the inner sealing ring 140 in the second mounting groove, place the outer sealing ring 150 in the first mounting groove, then insert the mating section of the male head 110 into the mating cavity of the female head 120, then place the compression spring 160 behind the rear end face of the first positioning protrusion, so that the front end of the compression spring 160 contacts the rear end face of the first positioning protrusion, then insert the connected male head 110 and female head 120 into the assembly channel of the connecting sleeve 130, so that the front end face of the second positioning protrusion of the connecting sleeve 130 contacts the rear end of the compression spring 160, and so that the connecting sleeve 130 and the female head 120 are detachably connected, thereby completing the assembly of the rotatable sealing structure of this application.

[0039] The assembled rotatable sealing structure has undergone multiple bends at the connection between the male head 110 and the female head 120, which improves the sealing effect. Furthermore, since the compression spring 160 is located between the first positioning protrusion and the second positioning protrusion, the male head 110 can rotate relative to the female head 120 while ensuring a firm connection and tight seal between the male head 110 and the female head 120. This expands the application scenarios of the sealing structure, such as its use on faucets, and ensures that there is no leakage.

[0040] In addition, since the sealing rings are located on different bending surfaces, compared to the sealing rings being on the same surface, the possibility of all sealing rings failing after insertion can be reduced, resulting in a better sealing effect. Furthermore, even if the inner ring seal fails, the medium needs to bypass the first bend and then pass through the outer sealing ring, which can again prevent gas and liquid from leaking out. Because the sealing structure of this application has a better sealing effect, the sealing structure of this application can be applied to the sealing of high-pressure gas and liquid pipeline connections.

[0041] Furthermore, since the sealing structure in this application uses a soft sealing structure such as a sealing ring, compared to the hard sealing structure which requires cutting off the head, then welding, acid washing, and the entire pipeline to be removed, the sealing structure in this application can be adapted to multiple insertions and removals. After insertion and removal, only the sealing ring needs to be replaced, thus the sealing structure can be reused. Moreover, insertion and removal are convenient and do not require the removal of the entire pipeline.

[0042] Because the sealing structure of this application has a good sealing effect, it is suitable for sealing the connection of high-pressure gas and liquid pipelines and can be reused. Therefore, the sealing structure of this application can be applied to relevant pipelines in reusable rockets that require multiple insertions and removals. It not only does not reduce the sealing performance (only the sealing ring needs to be replaced), but also reduces the cost of the rocket.

[0043] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rotatable sealing structure, characterized in that, include: Male connector, female connector, connecting sleeve, inner sealing ring, outer sealing ring, and compression spring; The female head has a mating cavity formed inside the tube wall of the mating section, and the opening of the mating cavity is located on the mating end face of the female head. The male head's mating section is inserted into the mating cavity from the opening of the mating cavity. The inner sealing ring and the outer sealing ring are located in the mating cavity. The inner sealing ring is located between the inner wall surface of the mating section of the male head and the inner wall surface of the mating cavity of the female head, and the outer sealing ring is located between the outer wall surface of the mating section of the male head and the outer wall surface of the mating cavity of the female head. The connecting sleeve has an assembly channel that runs through both ends. The exposed part of the male head's mating section and the mating section of the female head are both located within the assembly channel of the connecting sleeve. The outer wall surface of the male connector's mating section has an outwardly extending first positioning protrusion, and the first positioning protrusion is farther away from the male connector's mating end face than the first mounting groove. The front end face of the first positioning protrusion contacts the end face of the outer wall of the female connector's mating cavity. The positioning end of the connecting sleeve extends inward with a second positioning protrusion, and the front end face of the second positioning protrusion contacts the rear end face of the mating section of the male connector. The connecting sleeve and the connecting section of the female head are detachably connected. The compression spring is located between the first positioning protrusion and the second positioning protrusion. The compression spring presses the front end face of the first positioning protrusion against the end face of the outer wall of the mating cavity of the female head, and presses the front end face of the second positioning protrusion against the rear end face of the mating section of the male head.

2. The rotatable sealing structure according to claim 1, characterized in that, The inner diameter of the male connector's mating section is larger than the inner diameter of the other pipe sections of the male connector.

3. The rotatable sealing structure according to claim 2, characterized in that, The outer diameter of the mating cavity of the female connector is larger than the outer diameter of the other pipe sections of the female connector, and the inner diameter of the inner wall of the mating cavity of the female connector is equal to the inner diameter of the other pipe sections of the female connector and the inner diameter of the other pipe sections of the male connector.

4. The rotatable sealing structure according to any one of claims 1 to 3, characterized in that, The outer wall of the male connector has an inwardly recessed first mounting groove, and the outer sealing ring is located within the first mounting groove.

5. The rotatable sealing structure according to claim 4, characterized in that, The inner wall of the mating cavity of the female head has a recessed second mounting groove, and part of the inner sealing ring is located in the second mounting groove.

6. The rotatable sealing structure according to claim 5, characterized in that, The outer wall surface of the male connector has multiple inwardly recessed first mounting grooves, and each first mounting groove is provided with an outer sealing ring. The inner wall surface of the mating cavity of the male and / or female head has multiple inwardly recessed second mounting grooves, and each second mounting groove is provided with an inner sealing ring.

7. The rotatable sealing structure according to any one of claims 1 to 3, characterized in that, The outer wall of the male connector's mating section forms a chamfer at the connection point with the male connector's mating end face, and the inner wall of the female connector's mating cavity forms a chamfer at the connection point with the inner wall of the female connector's mating cavity.

8. The rotatable sealing structure according to claim 7, characterized in that, Both the male and female connectors have rounded / beveled chamfers.

9. The rotatable sealing structure according to any one of claims 1 to 3, characterized in that, The inner surface of the connecting sleeve has an internal thread, and the outer wall of the mating cavity of the female head has an external thread. The internal thread of the connecting sleeve is threadedly connected to the external thread of the female head to achieve a detachable connection between the connecting sleeve and the female head.

10. The rotatable sealing structure according to any one of claims 1 to 3, characterized in that, The outer surface of the first positioning protrusion is lower than the outer wall surface of the mating cavity of the female head.

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