CN215635613U

CN215635613U - Safe type quick-operation joint

Info

Publication number: CN215635613U
Application number: CN202121166969.8U
Authority: CN
Inventors: 徐世方
Original assignee: Ningbo Xinbang Technology Co ltd
Current assignee: Ningbo Xinbang Technology Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-01-25
Anticipated expiration: 2031-05-28

Abstract

The utility model discloses a safe quick joint which comprises a joint center, a bolt body, a center outer sleeve and a joint valve core, wherein one end of the joint center is inserted into the bolt body and is in threaded connection with the bolt body; the joint valve core is movably arranged in the joint center, the outer wall of the bolt body is in threaded connection with a safety lock cap, the center outer sleeve comprises a front end face and a rear end face, the safety lock cap is in abutting fit with the rear end face, the side wall of the joint center is provided with a center limiting end face, and the front end face is in limiting fit with the center limiting end face. The utility model has the following advantages and effects: the new mechanical structure of this scheme utilization adopts the mode that sets up the safety lock cap at the bolt body is external, and the safety lock cap has the effect of high security with the spacing cooperation of the bolt body.

Description

Safe type quick-operation joint

Technical Field

The utility model relates to the technical field of quick connectors, in particular to a safe quick connector.

Background

The quick connector is a connector which can realize the connection or disconnection of pipelines without tools. Quick-operation joint can divide into: the quick connector for air, the quick connector for oxygen and fuel gas, the quick connector for gas and liquid sharing, the quick connector for oil pressure, the quick connector for inert gas, the quick connector for cooling water and temperature oil and the quick connector for semiconductors. The speed of pipe connection will be directly influenced by the dismouting of quick-operation joint, consequently, the quick-operation joint that can realize rapid Assembly has gradually appeared on the market.

The prior Chinese patent with publication number CN205173807U discloses a quick joint convenient to assemble, which comprises an internal thread nut, a joint center, a center coat and a joint valve core; an air chamber is arranged in the internal thread nut; one end of the joint center is inserted into the inner screw nut and is in threaded connection with the inner screw nut, and the other end of the joint center is provided with a flange with a step; the central sleeve is movably sleeved on the middle section of the joint central; the inner wall of the central sleeve is provided with a limit ring; a jacket spring is arranged between the inner wall of the central sleeve and the outer wall of the joint central sleeve; two ends of the outer sleeve spring are respectively propped against the end part of the inner screw nut and the side wall of the limiting ring; a central pivot door cover is arranged at one end of the joint central pivot inserted into the internal thread screw cap; the joint valve core is movably inserted in the joint central pivot; the joint valve core is provided with a closed end penetrating through the central pivot door cover and an open end arranged in the joint central pivot; a side plate of the joint center close to one side of the flange is uniformly provided with a plurality of conical holes along the circumferential direction, and each conical hole is internally provided with a steel ball; the part of the steel ball exposed out of the outer wall of the joint center props against the side wall of the limiting ring, and the steel ball props against the outer wall of the open end of the joint valve core along the radial direction of the joint center; a valve core spring is arranged between the outer wall of the middle part of the joint valve core and the inner wall of the joint center; the outer wall of the open end of the joint valve core is provided with a limit convex ring; two ends of the valve core spring are respectively propped against the end part of the central pivot door cover and the side wall of the limiting convex ring; an air inlet chamber extending from the open end to the closed end is arranged in the joint valve core, and an air inlet penetrating through the joint valve core is arranged at the bottom of the air inlet chamber along the radial direction of the joint valve core. When the locking device is used, the inserting core is inserted into the center and can be locked through the steel balls.

However, the above-mentioned quick coupling has the following disadvantages: because the quick connector is not provided with a part matched with the backstop of the central sleeve, and the central sleeve is only propped tightly and limited by the sleeve spring, when the quick connector is used, if the central sleeve axially moves relative to the central sleeve under the action of external force, the phenomenon that the inserting core is popped out is easily caused, and the human body is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a safe quick connector which has the effect of high safety by arranging a safety lock cap outside a bolt body.

The technical purpose of the utility model is realized by the following technical scheme: a safety type quick joint comprises a joint center, a bolt body, a center outer sleeve and a joint valve core, wherein one end of the joint center is inserted into the bolt body and is in threaded connection with the bolt body; the joint valve core is movably arranged in the joint center, the outer wall of the bolt body is in threaded connection with a safety lock cap, the center outer sleeve comprises a front end face and a rear end face, the safety lock cap is in abutting fit with the rear end face, the side wall of the joint center is provided with a center limiting end face, and the front end face is in limiting fit with the center limiting end face;

when the safety lock cap tightly supports the front end face of the central sleeve against the central limiting end face, the side wall of the steel ball is supported against the flat retaining face, and the steel ball is locked; when the safety lock cap unlocks the center sleeve, the center sleeve moves relative to the joint center, the side wall of the steel ball abuts against the inclined blocking surface, and the steel ball is unlocked at the moment.

The utility model is further provided with: the inner wall of the central sleeve is provided with a limiting ring, the flat blocking surface is arranged on the inner wall of the limiting ring, the inclined blocking surface is arranged on the end surface of the limiting ring, and the inclined blocking surface and the flat blocking surface are arranged adjacently.

The utility model is further provided with: one end of the outer sleeve spring is abutted against the end face, far away from the inclined blocking face, of the limiting ring, and the other end of the outer sleeve spring is abutted against the end face, close to the joint center, of the bolt body.

The utility model is further provided with: the middle part of the outer wall of the safety lock cap is provided with a convex ridge.

The utility model is further provided with: the end of the joint center inserted into the bolt body is provided with a center door cover, and the joint valve core is provided with a closed end penetrating through the center door cover and an open end arranged in the joint center; one side of the central gate cover facing the bolt body is provided with a conical sealing surface, the closed end of the connector valve core is provided with a first annular groove, and a first sealing ring abutting against the conical sealing surface is clamped in the first annular groove.

The utility model is further provided with: the outer wall of the middle part of the joint valve core is sleeved with a valve core spring, the outer wall of the open end of the joint valve core is provided with a limiting convex ring, one end of the valve core spring supports against the limiting convex ring, and the other end of the valve core spring supports against the central door cover.

The utility model is further provided with: an air inlet chamber extending from the open end to the closed end is arranged in the joint valve core, and an air inlet communicated with the air inlet chamber is formed in the side wall of the air inlet chamber along the radial direction of the joint valve core.

The utility model is further provided with: the inner wall of the open end of the joint valve core is provided with a second annular groove, and a second sealing ring is clamped in the second annular groove.

The utility model is further provided with: the inner wall of the joint center is provided with a limit step which is propped against a limit convex ring on the joint valve core.

The utility model is further provided with: and a third sealing ring is arranged between the inner wall of the bolt body and the outer wall of the central gate cover.

In conclusion, the utility model has the following beneficial effects: when the inserting core is inserted into the joint center, the safety lock cap is screwed to move in a direction far away from the joint center, so that a certain movable space is formed between the center sleeve and the safety lock cap, the center sleeve moves relative to the joint center along the axial direction, the front end face gradually keeps away from the center limiting end face, the sleeve spring is compressed in the process, the inserting core can be inserted into the joint center, the front end of the inserting core is abutted against the joint valve core, and the steel ball can movably enter the inserting groove in the side wall of the inserting core; then the central sleeve is loosened, the central sleeve is reset under the driving of the sleeve spring, the safety lock cap is screwed reversely until the end face of the safety lock cap is tightly propped against the rear end face of the central sleeve, and the front end face of the central sleeve is tightly propped against the central limiting end face, so that the steel ball can be locked. So, in the use, even external force acts on the maincenter overcoat, the maincenter overcoat can not take place the displacement owing to receive the spacing of safety lock cap yet to can avoid causing the damage to the human body, have higher security.

Drawings

Fig. 1 is a schematic diagram of a ferrule structure in the prior art.

FIG. 2 is a cross-sectional view showing the assembled free state of the embodiment.

Fig. 3 is a sectional view showing the structural relationship of the insertion core insert in the embodiment, and the steel ball is in a locking state.

Fig. 4 is a sectional view showing the structural relationship of the insertion core in the embodiment, and the steel ball is in an unlocked state.

In the figure: 1. inserting a core; 11. caulking grooves; 2. a linker hub; 21. a tapered hole; 22. a central pivot limit end face; 23. a limiting step; 3. a bolt body; 31. a third seal ring; 4. a central sleeve; 41. a limiting ring; 411. leveling a blocking surface; 412. an inclined baffle surface; 42. a front end face; 43. a rear end face; 5. a connector spool; 51. a closed end; 52. an open end; 53. a first annular groove; 531. a first seal ring; 54. a limit convex ring; 55. an air intake chamber; 56. an air inlet; 57. a second annular groove; 571. a second seal ring; 6. a spring is sleeved outside; 7. steel balls; 8. a safety lock cap; 81. a raised ridge; 9. a central pivot door cover; 91. a tapered sealing surface; 10. a spool spring.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

A safety quick coupling is shown in figure 1, and is a ferrule 1 inserted in the quick coupling in the prior art, and an annular caulking groove 11 is formed in the side wall of the ferrule 1. As shown in fig. 2-4, the structural relationship section of the present embodiment includes a joint hub 2, a bolt body 3, a hub outer sleeve 4 and a joint valve core 5.

As shown in fig. 2-4, one end of the joint center 2 is inserted into the bolt body 3 and is in threaded connection with the bolt body, the center housing 4 is movably sleeved in the middle of the joint center 2 through the housing spring 6, the inner wall of the center housing 4 is provided with the limit ring 41, the inner wall of the limit ring 41 is provided with a flat blocking surface 411, the end surface of the limit ring 41 is provided with an inclined blocking surface 412, and the inclined blocking surface 412 is arranged adjacent to the flat blocking surface 411. One end of the outer spring 6 abuts against the end face of the limit ring 41 far away from the inclined blocking face 412, and the other end of the outer spring 6 abuts against the end face of the bolt body 3 close to the joint center 2.

As shown in fig. 2-4, the outer wall of the joint center 2 is provided with a tapered hole 21, a steel ball 7 is movably arranged in the tapered hole 21, and the steel ball 7 is abutted and matched with the flat blocking surface 411 or the inclined blocking surface 412; the outer wall of the bolt body 3 is in threaded connection with a safety lock cap 8, and the middle of the outer wall of the safety lock cap 8 is provided with a convex ridge 81. The center jacket 4 comprises a front end face 42 and a rear end face 43, the end face of the safety lock cap 8 is matched with the rear end face 43 of the center jacket 4 in an abutting mode, the outer side wall of the joint center 2 is provided with a center limiting end face 22, and the front end face 42 of the center jacket 4 is matched with the center limiting end face 22 in a limiting mode; when the safety lock cap 8 tightly supports the front end face 42 of the central outer sleeve 4 against the central limiting end face 22, the side wall of the steel ball 7 is supported against the flat blocking face 411, and the steel ball 7 is locked at the moment; when the safety lock cap 8 unlocks the central sleeve 4, the central sleeve 4 moves relative to the joint central hub 2, the side wall of the steel ball 7 is abutted against the inclined blocking surface 412, and the steel ball 7 is unlocked.

As shown in fig. 2-4, the end of the joint hub 2 inserted into the bolt body 3 is provided with a hub door cover 9, and the joint valve core 5 is provided with a closed end 51 penetrating through the hub door cover 9 and an open end 52 arranged in the joint hub 2; the side of the central door cover 9 facing the bolt body 3 is provided with a conical sealing surface 91, the closed end 51 of the joint valve core 5 is provided with a first annular groove 53, and a first sealing ring 531 which is abutted against the conical sealing surface 91 is clamped in the first annular groove 53. A third sealing ring 31 is arranged between the inner wall of the bolt body 3 and the outer wall of the central door cover 9, so that the sealing performance between the central door cover 9 and the bolt body 3 can be improved.

As shown in fig. 2-4, the valve core spring 10 is sleeved on the outer wall of the middle portion of the joint valve core 5, the outer wall of the open end 52 of the joint valve core 5 is provided with a limit convex ring 54, one end of the valve core spring 10 abuts against the limit convex ring 54, the other end of the valve core spring 10 abuts against the center door cover 9, and the valve core spring 10 makes the joint valve core 5 always have a tendency of moving towards the joint center 2. An air inlet chamber 55 extending from the open end 52 to the closed end 51 is arranged in the joint valve core 5, and an air inlet 56 communicated with the air inlet chamber 55 is formed in the side wall of the air inlet chamber 55 along the radial direction of the joint valve core 5. The inner wall of the open end 52 of the connector valve core 5 is provided with a second annular groove 57, a second sealing ring 571 is clamped in the second annular groove 57, and when the front end of the ferrule 1 is inserted into the open end 52 of the connector ferrule 1, the first sealing ring 531 is in sealing fit with the ferrule 1. The inner wall of the joint center 2 is provided with a limit step 23 which is abutted against a limit convex ring 54 on the joint valve core 5, and the limit step 23 is matched with the limit convex ring 54 to limit the displacement distance of the joint valve core 5 under the elastic action of the valve core spring 10 so as to prevent the joint valve core 5 from being separated from the joint center 2.

The basic working principle of the utility model is as follows: when the inserting core 1 is inserted into the joint center 2, the safety lock cap 8 is screwed to move towards the direction far away from the joint center 2, a certain movable space is formed between the center sleeve 4 and the safety lock cap 8, the center sleeve 4 moves relative to the joint center 2 along the axial direction, the front end face 42 is gradually far away from the center limiting end face 22, the outer sleeve spring 6 is compressed in the process, the inserting core 1 can be inserted into the joint center 2, the front end of the inserting core 1 is abutted against the joint valve core 5, and the steel ball 7 can movably enter the embedding groove 11 on the side wall of the inserting core 1; then, the center jacket 4 is loosened, the center jacket 4 is reset under the driving of the jacket spring 6, the safety lock cap 8 is screwed reversely until the end face of the safety lock cap 8 is tightly propped against the rear end face 43 of the center jacket 4 and the front end face 42 of the center jacket 4 is tightly propped against the center limit end face 22, and the steel ball 7 can be locked in the caulking groove 11. So, in the use, even external force acts on maincenter overcoat 4, maincenter overcoat 4 can not take place the displacement owing to receive safety lock cap 8 spacing yet to can avoid causing the damage to the human body, have higher security.

Other working principles of the present invention are consistent with those of the prior art, and are not described herein again.

The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.

Claims

1. A safety quick joint comprises a joint center (2), a bolt body (3), a center outer sleeve (4) and a joint valve core (5), wherein one end of the joint center (2) is inserted into the bolt body (3) and is in threaded connection with the bolt body, the center outer sleeve (4) is movably sleeved in the middle of the joint center (2) through an outer sleeve spring (6), a tapered hole (21) is formed in the outer wall of the joint center (2), a steel ball (7) is movably arranged in the tapered hole (21), and the center outer sleeve (4) is provided with an inclined blocking surface (412) and a plane (411); the joint valve core (5) is movably arranged in the joint center (2), and is characterized in that: the bolt body (3) is in threaded connection with a safety lock cap (8) on the outer wall, the center sleeve (4) comprises a front end face (42) and a rear end face (43), the safety lock cap (8) is in abutting fit with the rear end face (43), a center limiting end face (22) is arranged on the side wall of the joint center (2), and the front end face (42) is in limiting fit with the center limiting end face (22);

when the safety lock cap (8) tightly supports the front end face (42) of the central sleeve (4) against the central limiting end face (22), the side wall of the steel ball (7) is supported against the flat blocking face (411), and the steel ball (7) is locked at the moment; when the safety lock cap (8) unlocks the center sleeve (4), the center sleeve (4) moves relative to the joint center (2), the side wall of the steel ball (7) is abutted to the inclined blocking surface (412), and the steel ball (7) is unlocked at the moment.

2. The safety quick connector according to claim 1, wherein: the inner wall of the central sleeve (4) is provided with a limiting ring (41), the flat blocking surface (411) is arranged on the inner wall of the limiting ring (41), the inclined blocking surface (412) is arranged on the end surface of the limiting ring (41), and the inclined blocking surface (412) and the flat blocking surface (411) are arranged adjacently.

3. The safety quick connector of claim 2, wherein: one end of the outer sleeve spring (6) abuts against the end face, far away from the inclined blocking face (412), of the limiting ring (41), and the other end of the outer sleeve spring (6) abuts against the end face, close to the joint center (2), of the bolt body (3).

4. The safety quick connector according to claim 1, wherein: the middle part of the outer wall of the safety lock cap (8) is provided with a convex ridge (81).

5. The safety quick connector according to claim 1, wherein: a central pivot door cover (9) is installed at one end of the joint central pivot (2) inserted into the bolt body (3), and the joint valve core (5) is provided with a closed end (51) penetrating through the central pivot door cover (9) and an open end (52) arranged in the joint central pivot (2); one side of the central gate cover (9) facing the bolt body (3) is provided with a conical sealing surface (91), the closed end (51) of the connector valve core (5) is provided with a first annular groove (53), and a first sealing ring (531) abutting against the conical sealing surface (91) is clamped in the first annular groove (53).

6. The safety quick connector according to claim 5, wherein: the valve core spring (10) is sleeved on the outer wall of the middle of the joint valve core (5), a limiting convex ring (54) is arranged on the outer wall of an open end (52) of the joint valve core (5), one end of the valve core spring (10) abuts against the limiting convex ring (54), and the other end of the valve core spring (10) abuts against the center door cover (9).

7. The safety quick connector according to claim 1, wherein: an air inlet chamber (55) extending from the open end (52) to the closed end (51) is arranged in the joint valve core (5), and an air inlet (56) communicated with the air inlet chamber (55) is formed in the side wall of the air inlet chamber (55) along the radial direction of the joint valve core (5).

8. The safety quick connector according to claim 1, wherein: the inner wall of the open end (52) of the joint valve core (5) is provided with a second annular groove (57), and a second sealing ring (571) is clamped in the second annular groove (57).

9. The safety quick connector of claim 6, wherein: and a limiting step (23) which is abutted against a limiting convex ring (54) on the joint valve core (5) is arranged on the inner wall of the joint center (2).

10. The safety quick connector according to claim 5, wherein: and a third sealing ring (31) is arranged between the inner wall of the bolt body (3) and the outer wall of the central door cover (9).