Ferrule joint providing additional level leakage protection
The card connector fitting with a ring seal and elastic arc protrusion enhances leak protection and simplifies assembly by creating a double seal, addressing the issues of poor reliability and complexity in existing designs.
Patent Information
- Application Number
- CN202422555087.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The existing sleeve joints have poor seal reliability, complex structure and difficult assembly, and it is impossible to achieve effective sealing and clamping of the annular sealing gasket.
The annular sealing gasket structure is adopted. When the nut is tightened with the thread of the joint, the clamping sleeve applies an oblique elastic force to the clamping gasket, causing its inner ring wall to protrude inward into the annular groove of the clamping sleeve, and combines the clamping connection between the elbow part and the connecting pipe to achieve an additional level of leakage protection.
Improves sealing effect, prevents connection tubes from disengagement and provides an additional level of leakage protection, simplifying the assembly process.
Smart Images
Figure CN223105551U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of ferrule connectors, and particularly relates to a ferrule connector providing an additional level of leak protection. Background Art
[0002] A ferrule connector includes a connecting pipe, a ferrule and a joint. One end of the ferrule for connecting with the joint is the joint end, and one end of the ferrule for inserting the pipeline is the inlet pipe end. The joint end of the ferrule is provided with a conical surface, the joint is provided with a conical hole in sealing fit with the conical surface, an external thread is provided on the outer periphery of the joint, and an internal thread section in fit with the external thread of the joint is provided inside the ferrule. During use, the ferrule is riveted with the pipeline, then the joint is threadedly connected with a connecting nut, and the joint end of the ferrule is pressed into the conical hole of the joint. The conical hole and the conical surface are in sealing fit to form a primary seal. Since this seal pipe joint has only one seal, its seal reliability is poor.
[0003] An existing ferrule connector, such as an elastic seal ferrule disclosed in the application number 2018208220643, specifically includes a high-pressure steel pipe, a ferrule nut, a ferrule and a joint. The ferrule nut and the ferrule are sleeved on the high-pressure steel pipe, the ferrule nut is connected to the joint, the ferrule is installed between the joint and the ferrule nut, and the joint has an inner conical surface; a fixing ring is provided between the ferrule and the joint, the fixing ring is sleeved on the high-pressure steel pipe, an elastic seal body is provided at one end of the fixing ring close to the joint, the elastic seal body is sleeved on the high-pressure steel pipe, and the elastic seal body has an outer conical surface in fit with the inner conical surface of the joint; the inner diameter of the elastic seal body is smaller than the outer diameter of the high-pressure steel pipe, the outer conical surface size of the elastic seal body is larger than the inner conical surface size of the joint, and the elastic seal body is vulcanized on the fixing ring. The existing technical solution has a relatively complex structure, is difficult to assemble, and cannot achieve the technical effect of simultaneously realizing seal positioning through an annular gasket. Summary of the Invention
[0004] In order to solve the above problems, the utility model provides a ferrule connector providing an additional level of leak protection:
[0005] A ferrule connector providing an additional level of leakage protection, comprising a connecting pipe, a nut, a ferrule, a connector and an annular gasket. The nut and the ferrule are sleeved on the connecting pipe. The inner surface of the nut and the outer surface of the connector form a threaded connection. An annular installation cavity for installing the ferrule and the annular gasket is provided between the nut, the connector and the connecting pipe. One end of the ferrule corresponding to the connector is provided with an inner bevel ring portion, and the inner bevel ring portion is adapted to the outer bevel ring portion provided on the connector. When the nut and the connector are screwed into each other, the nut drives the inner bevel ring portion of the ferrule to slide tangentially and close to the outer bevel ring portion of the connector. The annular gasket is arranged between the nut and the ferrule. An elastic arc-shaped protrusion protruding outward is provided on the inclined outer portion of the annular gasket corresponding to the ferrule. The elastic arc-shaped protrusion is engaged with a first arc-shaped groove provided on the ferrule. When the nut and the connector are screwed tightly, the first arc-shaped groove of the ferrule exerts an obliquely downward force on the elastic arc-shaped protrusion of the annular gasket. At this time, the inner surface of the annular gasket close to the ferrule bulges inward to form a snap-fit sealing connection with a first annular groove provided on the cylindrical surface of the connecting pipe.
[0006] Preferably, an elastic arc-shaped groove is provided on the outer side of the annular gasket corresponding to the elastic arc-shaped protrusion. The elastic arc-shaped groove is adapted to a first arc-shaped protrusion provided on the ferrule. The first arc-shaped protrusion is adjacent to the first arc-shaped groove. When the nut and the connector are screwed tightly, the first arc-shaped protrusion exerts a radially inward force on the first arc-shaped groove, so that the inner ring surface of the annular gasket is in a flared structure with one large and one small. The inner ring surface close to the ferrule bulges further inward to improve the corresponding sealing effect.
[0007] Preferably, the contact surface of the nut corresponding to the annular gasket is an annular inclined surface sloping downward. When the nut and the connector are screwed tightly, the annular inclined surface generates an obliquely downward force corresponding to the first annular groove on the annular gasket.
[0008] Preferably, the outer end of the inner bevel ring portion is provided with a bent head portion bent toward the connecting pipe side. The bent head portion forms a snap-fit connection with a second annular card slot provided on the cylindrical surface of the connecting pipe. When the nut and the connector are screwed into each other, the nut drives the inner bevel ring portion of the ferrule to slide tangentially and close to the outer bevel ring portion of the connector, and the bent head portion enters the second annular card slot to form a snap-fit connection with it.
[0009] Preferably, a connection groove adapted to the connecting pipe is provided on the inner side of the connector relative to the outer bevel ring portion. The end surface of the connecting pipe is provided with a bottom wall adapted to the connection groove. An annular groove adapted to the connecting pipe is provided on the bottom wall of the connection groove. An annular sealing ring is adaptively installed in the annular groove.
[0010] Preferably, the cross-section of the annular groove is in a semi-circular structure, and the inner wall of the annular groove is provided with a plurality of strip-shaped clamping grooves extending along the length direction of the annular groove. The strip-shaped clamping grooves and a plurality of sealing ridges provided on the surface of the annular sealing ring form a clamping and sealing fit. The sealing ridges and the strip-shaped clamping grooves are mutually adapted to improve the corresponding sealing effect.
[0011] Beneficial effects: Compared with the prior art, in this application, through the unique annular gasket structure, when the nut and the joint are screwed together, the ferrule can exert an oblique elastic force on the annular gasket. Under the oblique force, one side of the inner ring wall of the annular gasket bulges inward relatively and abuts against the first annular groove. The annular gasket can not only position the connecting pipe through the first annular groove to prevent the disconnection of the connecting pipe, but also provide an additional sealing effect on the connecting pipe, thereby achieving an additional level of leakage protection effect. Description of the Drawings
[0012] Figure 1 It is a schematic cross-sectional view of Embodiment 1.
[0013] Figure 2 It is Figure 1 an enlarged schematic view of part A in
[0014] Figure 3 It is Figure 1 an enlarged schematic view of part B in
[0015] Figure 4 It is Figure 1 an enlarged schematic view of part C in
[0016] Reference numerals: 1, connecting pipe; 2, nut; 3, ferrule; 4, joint; 5, annular gasket; 6, inner inclined surface ring part; 7, outer inclined surface ring part; 8, elastic arc-shaped protrusion; 9, first arc-shaped groove; 10, first annular groove; 11, elastic arc-shaped groove; 12, first arc-shaped protrusion; 13, annular inclined surface; 14, bent head part; 15, second annular clamping groove; 16, connecting groove; 17, annular sealing ring; 18, sealing ridge. Detailed Embodiments
[0017] The following further describes the present invention in conjunction with Figures 1-4 the accompanying drawings and Embodiment 1.
[0018] Embodiment 1: As Figure 1 shown, a ferrule joint providing an additional level of leakage protection includes a connecting pipe 1, a nut 2, a ferrule 3, a joint 4, and an annular gasket 5. The nut 2 and the ferrule 3 are sleeved on the connecting pipe 1. The inner surface of the nut 2 and the outer surface of the joint 4 form a threaded connection. An annular installation cavity for installing the ferrule 3 and the annular gasket 5 is provided between the nut 2, the joint 4, and the connecting pipe 1.
[0019] As Figure 2 shown, an inner bevel ring portion 6 is provided at one end of the ferrule 3 corresponding to the joint 4, and the inner bevel ring portion 6 is adapted to the outer bevel ring portion 7 provided on the joint 4. When the nut 2 and the joint 4 are screwed into each other, the inner bevel ring portion 6 of the ferrule 3 is tangentially slid close to the outer bevel ring portion 7 of the joint 4 driven by the nut 2.
[0020] As Figure 3 shown, the annular gasket 5 is arranged between the nut 2 and the ferrule 3. An elastic arc-shaped protrusion 8 protruding outward is provided on the inclined outer portion of the annular gasket 5 corresponding to the ferrule 3. The elastic arc-shaped protrusion 8 is engaged with the first arc-shaped groove 9 provided on the ferrule 3 in a snap-fit manner. When the nut 2 and the joint 4 are screwed tightly, the first arc-shaped groove 9 of the ferrule 3 exerts an obliquely downward force on the elastic arc-shaped protrusion 8 of the annular gasket 5. At this time, the inner surface of the annular gasket 5 close to the ferrule 3 bulges inward to form a snap-fit sealing connection with the first annular groove 10 provided on the columnar surface of the connecting pipe 1. An elastic arc-shaped groove 11 is provided on the outer side of the annular gasket 5 corresponding to the elastic arc-shaped protrusion 8, and the elastic arc-shaped groove 11 is adapted to the first arc-shaped protrusion 12 provided on the ferrule 3. The first arc-shaped protrusion 12 is adjacent to the first arc-shaped groove 9. When the nut 2 and the joint 4 are screwed tightly, the first arc-shaped protrusion 12 exerts a radially inward force on the first arc-shaped groove 9, so that the inner ring surface of the annular gasket 5 is in a flared structure with one large and one small, and the inner surface of the ring close to the ferrule 3 further bulges inward to improve the corresponding sealing effect. The contact surface of the nut 2 corresponding to the annular gasket 5 is an obliquely downward annular inclined surface 13. When the nut 2 and the joint 4 are screwed tightly, the annular inclined surface 13 exerts an obliquely downward force corresponding to the first annular groove 10 on the annular gasket 5.
[0021] As Figure 3 shown, a bent head portion 14 bent toward the connecting pipe 1 is provided at the outer end of the inner bevel ring portion 6. The bent head portion 14 forms a snap-fit connection with the second annular card slot 15 provided on the columnar surface of the connecting pipe 1. When the nut 2 and the joint 4 are screwed into each other, the inner bevel ring portion 6 of the ferrule 3 is tangentially slid close to the outer bevel ring portion 7 of the joint 4 driven by the nut 2, and the bent head portion 14 enters the second annular card slot 15 to form a snap-fit connection with it.
[0022] As Figure 1 shown, a connection groove 16 adapted to the connecting pipe 1 is provided on the inner side of the joint 4 opposite to the outer bevel ring portion 7. The end surface of the connecting pipe 1 is provided with a bottom wall adapted to the connection groove 16. An annular groove adapted to the connecting pipe 1 is provided on the bottom wall of the connection groove 16, and an annular sealing ring 17 is adapted and installed in the annular groove.
[0023] As Figure 4As shown, the cross-section of the annular groove is in a semi-circular structure. A plurality of strip-shaped clamping grooves extending along the length direction of the annular groove are provided on the inner wall of the annular groove. The strip-shaped clamping grooves and a plurality of sealing ridges 18 provided on the surface of the annular sealing ring 17 form a clamping and sealing fit. The sealing ridges 18 and the strip-shaped clamping grooves are mutually adapted to improve the corresponding sealing effect.
[0024] Operating principle: When the nut 2 and the joint 4 are screwed together, the interaction between the ferrule 3 and the nut 2 on the annular gasket 5 causes the inner ring surface of the annular gasket 5 close to the ferrule 3 to turn outwards relatively and bulge inwards, so as to enter the first annular clamping groove for sealing and clamping. The setting of the bent head 14 plays a further role in clamping and fixing the connecting pipe 1.
[0025] Obviously, the above embodiments of the present invention are merely examples for illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation manners here. And these obvious changes or modifications derived from the essence of the present invention still fall within the protection scope of the present invention.
Claims
1. A ferrule fitting that provides an additional level of leakage protection, characterized in that: It includes a connecting pipe (1), a nut (2), a ferrule (3), a joint (4) and an annular gasket (5). The nut (2) and the ferrule (3) are sleeved on the connecting pipe (1). The inner surface of the nut (2) and the outer surface of the joint (4) form a threaded connection. An annular installation cavity for installing the ferrule (3) and the annular gasket (5) is provided between the nut (2), the joint (4) and the connecting pipe (1). One end of the ferrule (3) corresponding to the joint (4) is provided with an inner inclined surface ring portion (6), and the inner inclined surface ring portion (6) is adapted to the outer inclined surface ring portion (7) provided on the joint (4). When the nut (2) and the joint (4) are screwed into each other, the nut (2) drives the inner inclined surface ring portion (6) of the ferrule (3) to slide tangentially and approach the outer inclined surface ring portion (7) of the joint (4). The annular gasket (5) is arranged between the nut (2) and the ferrule (3). An outwardly protruding elastic arc-shaped protrusion (8) is provided on the inclined outer portion on the side of the annular gasket (5) corresponding to the ferrule (3). The elastic arc-shaped protrusion (8) is engaged with the first arc-shaped groove (9) provided on the ferrule (3). When the nut (2) and the joint (4) are screwed tightly, the first arc-shaped groove (9) of the ferrule (3) exerts an obliquely downward force on the elastic arc-shaped protrusion (8) of the annular gasket (5). At this time, the inner surface of the side of the annular gasket (5) close to the ferrule (3) bulges inward to form a snap-fit sealing connection with the first annular groove (10) provided on the columnar surface of the connecting pipe (1).
2. The ferrule fitting for providing additional level of leakage protection according to claim 1, wherein: An elastic arc-shaped groove (11) is provided on the outer side of the annular gasket (5) corresponding to the elastic arc-shaped protrusion (8). The elastic arc-shaped groove (11) is adapted to the first arc-shaped protrusion (12) provided on the ferrule (3). The first arc-shaped protrusion (12) is adjacent to the first arc-shaped groove (9). When the nut (2) and the joint (4) are screwed tightly, the first arc-shaped protrusion (12) exerts a radially inward force on the first arc-shaped groove (9), so that the inner ring surface of the annular gasket (5) is in a flared structure with one large and one small, and the inner surface of the side of the ring inner surface close to the ferrule (3) further bulges inward.
3. The ferrule fitting for providing additional level leakage protection according to claim 1, characterized in that: The contact surface of the nut (2) corresponding to the annular gasket (5) is an obliquely downward annular inclined surface (13). When the nut (2) and the joint (4) are screwed tightly, the annular inclined surface (13) exerts an obliquely downward force corresponding to the first annular groove (10) on the annular gasket (5).
4. A ferrule fitting for providing additional level leakage protection according to claim 1, characterized in that: The outer end of the inner inclined surface ring portion (6) is provided with a bent head portion (14) bent towards the side of the connecting pipe (1). The bent head portion (14) forms a snap-fit connection with the second annular card slot (15) provided on the columnar surface of the connecting pipe (1). When the nut (2) and the joint (4) are screwed into each other, the nut (2) drives the inner inclined surface ring portion (6) of the ferrule (3) to slide tangentially and approach the outer inclined surface ring portion (7) of the joint (4), and the bent head portion (14) enters the second annular card slot (15) to form a snap-fit connection with it.
5. A ferrule fitting for providing additional level leakage protection according to claim 1, characterized in that: The inner side of the joint (4) relative to the outer inclined surface ring portion (7) is provided with a connection groove (16) adapted to the connection pipe (1). The end surface of the connection pipe (1) is provided with a bottom wall adapted to the connection groove (16). The bottom wall of the connection groove (16) is provided with an annular groove adapted to the connection pipe (1), and an annular sealing ring (17) is adaptively installed in the annular groove.
6. A ferrule fitting for providing additional level of leakage protection according to claim 5, characterized in that: The cross-section of the annular groove is in a semi-circular structure. The inner wall of the annular groove is provided with a plurality of strip-shaped clamping grooves extending along the length direction of the annular groove. The strip-shaped clamping grooves and a plurality of sealing ridges (18) provided on the surface of the annular sealing ring (17) form a clamping and sealing fit.