Self-closed quick pipe joint

Abstract

The utility model relates to the technical field of pipe joints, in particular to a self-sealing type quick pipe joint which comprises a first joint and a second joint, the first joint is used for communicating with the second joint, a connecting piece is arranged between the first joint and the second joint, and a first sealing assembly is arranged on the first joint and used for sealing the first joint. A second sealing assembly is arranged on the second connector and used for sealing the second connector. The pipe joint has the effects of self-sealing of the pipe joint and reduction of medium loss.

Description

Technical Field

[0001] The present application relates to the technical field of pipe joints, and in particular to a self-closing quick pipe joint. Background Art

[0002] Pipe fittings are a general term for connectors that can be installed and removed in a fluid passage, and are mainly used in hydraulic systems or water pipe connections. Pipe fittings are an important component in hydraulic systems. They are used to connect pipes or install pipes on hydraulic components. According to different connection methods and application requirements, pipe fittings can be divided into many types, including but not limited to welding, ferrule, crimping and flaring.

[0003] A Chinese patent with announcement number CN210462012U discloses an improved T-type high-pressure quick pipe connector, including a connector body, a second connector is provided at one end of the connector body, a first external thread is provided on the outer surface of the second connector, a second hydraulic pipe is provided at the end of the connector body, a hose is provided on the second hydraulic pipe, a third connector is provided on the second hydraulic pipe, and the third connector is detachably connected to the second connector.

[0004] During the use of the above technology, when the second connector is separated from the third connector, the medium remaining in the connector body and the second hydraulic pipe will flow out from the connecting end of the second connector and the third connector, thereby causing waste of the medium and having shortcomings. Utility Model Content

[0005] In order to improve the problem of medium flowing out of the pipe when the connector is separated, the present application provides a self-closing quick pipe connector.

[0006] The present application provides a self-sealing quick pipe joint adopting the following technical solution:

[0007] A self-closing quick pipe joint includes a first joint and a second joint, wherein the first joint is used to communicate with the second joint, a connecting piece is provided between the first joint and the second joint, a first closing component is provided on the first joint, and the first closing component is used to seal the first joint, and a second closing component is provided on the second joint, and the second closing component is used to seal the second joint.

[0008] By adopting the above technical solution, under the action of the connecting piece, the first joint is connected to the second joint. When the first joint is separated from the second joint, the first closing component blocks the first joint and the second closing component blocks the second joint. This reduces the possibility of residual medium flowing out of the pipe connected to the first joint and the pipe connected to the second joint when the first joint is separated from the second joint, which is beneficial to reducing the waste of medium.

[0009] Optionally, the connecting member includes a sleeve slidably mounted on the first joint, a limiting compression spring is supported between the sleeve and the first joint, a limiting groove is opened between the inner and outer walls of the first joint, a limiting ball is slidably arranged in the limiting groove, a slot for the limiting ball to be engaged is opened on the second joint, a limiting protrusion is arranged on the sleeve, a guide slope is arranged on the side of the limiting protrusion facing the second joint, the limiting protrusion is used to press the limiting ball against the slot, and a limiting sealing ring is arranged between the first joint and the sleeve.

[0010] By adopting the above technical solution, the worker first pushes the sleeve in the opposite direction, and the sleeve compresses the limiting compression spring. The limiting ball goes from a state of abutting against the limiting protrusion to a state of sliding and abutting against the guide inclined surface until it abuts against the inner wall of the sleeve. Then the worker inserts the second joint into the first joint until the limiting groove is connected with the slot. The worker releases the sleeve, and under the action of the limiting compression spring restoring deformation force, the limiting protrusion on the sleeve squeezes the limiting ball through the guide inclined surface, so that a part of the limiting ball is pushed into the slot on the second joint. At this time, the guide inclined surface on the limiting protrusion abuts against the limiting sealing ring, thereby realizing the fixed connection between the first joint and the second joint, and at the same time reducing the possibility of the sleeve detaching from the first joint.

[0011] Optionally, the first closing component includes a sliding cylinder coaxially slidably arranged in the first joint, a first sealing ring is arranged between the first joint and the sliding cylinder, a first valve core is coaxially arranged on the first joint, a first through port for circulating medium is opened on the first valve core, a first cone head is coaxially arranged on the first valve core, a first compression spring is supported between the sliding cylinder and the first valve core, the first compression spring is used to press the sliding cylinder against the first cone head, and an anti-slip component is arranged between the first joint and the sliding cylinder.

[0012] By adopting the above technical solution, when the first joint is separated from the second joint, the first compression spring pushes the end of the sliding cylinder to press against the first cone head, so that the sliding cylinder is blocked, thereby reducing the possibility of the medium in the first joint flowing out; when the first joint is abutted against the second joint, the first compression spring is compressed, the sliding cylinder is separated from the first cone head, and the medium flows from the first opening on the first valve core to the second joint.

[0013] Optionally, the anti-slip component includes an anti-slip ring coaxially arranged on the sliding cylinder, the outer diameter of the anti-slip ring is larger than the outer diameter of the sliding cylinder, and an anti-slip groove for the anti-slip ring to slide is opened on the inner side wall of the first joint.

[0014] By adopting the above technical solution, when the first joint is separated from the second joint, the first compression spring pushes the sliding cylinder to reset, which is beneficial to reduce the possibility of the sliding cylinder being separated from the first joint under the limiting effect of the anti-slip groove and the anti-slip ring.

[0015] Optionally, the second closing component includes a second valve core coaxially slidably arranged in the second joint, the second valve core is provided with a second port for circulating medium, the second valve core is coaxially provided with a second cone head, the second cone head is used to abut against the first cone head, the second joint is coaxially provided with an outer tube, a second sealing ring is provided between the outer tube and the second joint, a second compression spring is supported between the second valve core and the outer tube, and the second compression spring is used to push the second cone head to seal the second joint.

[0016] By adopting the above technical solution, when the first joint is separated from the second joint, the second compression spring pushes the second cone head to block the second joint, thereby reducing the possibility of the medium in the second joint flowing out; when the first joint is abutted against the second joint, the second compression spring is compressed, and the second valve core drives the second cone head to separate from the first cone head, and the medium flows in from the second opening on the second valve core.

[0017] Optionally, a guide cone ring is coaxially arranged on the second joint, and the diameter of the guide cone ring gradually decreases along the direction from the outer tube to the second valve core, and the second cone head is used to seal the guide cone ring.

[0018] By adopting the above technical solution, when the second compression spring recovers its deformation, the second compression spring pushes the second valve core to be pressed tightly against the guide cone ring, thereby achieving the effect of blocking the second joint. At the same time, the guide cone ring facilitates the insertion of the second joint into the first joint.

[0019] Optionally, the second joint is used to push the sliding cylinder to slide, and a third sealing ring is provided between the second joint and the sliding cylinder.

[0020] By adopting the above technical solution, after the second joint is inserted into the first joint, the third sealing ring helps to reduce the possibility of the medium overflowing from the contact position between the second joint and the sliding cylinder.

[0021] Optionally, the sleeve is provided with anti-slip grooves.

[0022] By adopting the above technical solution, it is convenient for workers to move the sleeve, and the possibility of hand slipping when moving the sleeve is reduced.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Under the action of the connecting piece, the first joint is connected with the second joint. When the first joint is separated from the second joint, the first closing component blocks the first joint, and the second closing component blocks the second joint, thereby reducing the possibility of residual medium flowing out of the pipeline connected with the first joint and the pipeline connected with the second joint when the first joint is separated from the second joint, which is conducive to reducing the waste of the medium;

[0025] 2. When the first joint is separated from the second joint, the first compression spring pushes the end of the sliding cylinder to press against the first cone head, so that the sliding cylinder is blocked, thereby reducing the possibility of the medium in the first joint flowing out; when the first joint is abutted against the second joint, the first compression spring is compressed, the sliding cylinder is separated from the first cone head, and the medium flows from the first opening on the first valve core to the second joint;

[0026] 3. When the first joint is separated from the second joint, the second compression spring pushes the second cone head to block the second joint, thereby reducing the possibility of the medium in the second joint flowing out; when the first joint is abutted against the second joint, the second compression spring is compressed, and the second valve core drives the second cone head to separate from the first cone head, and the medium flows in from the second opening on the second valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view of the first connector and the second connector when they are plugged in in the embodiment of the present application.

[0029] Figure 3 It is a cross-sectional view of the first joint and the second joint when they are separated in the embodiment of the present application.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. first joint; 2. second joint; 3. connecting piece; 31. sleeve; 32. limiting compression spring; 33. limiting notch; 34. limiting ball; 35. slot; 36. limiting protrusion; 37. guide slope; 38. limiting sealing ring; 4. first closing component; 41. sliding cylinder; 42. first sealing ring; 43. first valve core; 44. first through port; 45. first cone head; 46. first compression spring; 47. anti-slip member; 471. anti-slip ring; 472. anti-slip groove; 5. second closing component; 51. second valve core; 52. second through port; 53. second cone head; 54. outer tube; 55. second sealing ring; 56. second compression spring; 6. guide cone ring; 7. third sealing ring; 8. anti-slip pattern; 9. limiting accommodating groove; 10. first accommodating groove; 11. valve core plate; 12. external connecting cylinder. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The embodiment of the present application discloses a self-closing quick pipe joint.

[0033] Reference Figure 1A self-closing quick pipe connector includes a first connector 1 and a second connector 2, the second connector 2 is inserted into the second connector 2 tube and is connected to the second connector 2, a connecting piece 3 is arranged between the first connector 1 and the second connector 2, a first closing component 4 is arranged on the first connector 1, and the first closing component 4 is used to seal the first connector 1, and a second closing component 5 is arranged on the second connector 2, and the second closing component 5 is used to seal the second connector 2.

[0034] Reference Figure 1 , Figure 2 and Figure 3 The connecting member 3 includes a sleeve 31 slidably mounted on the first joint 1, and an anti-slip pattern 8 is arranged on the outside of the sleeve 31. A limiting groove 33 is opened between the inner and outer walls of the first joint 1, and a limiting ball 34 is slidably arranged in the limiting groove 33. A slot 35 for the limiting ball 34 to be engaged is opened on the second joint 2. A limiting protrusion 36 is integrally formed on the sleeve 31, and a limiting compression spring 32 is supported between the limiting protrusion 36 and the first joint 1.

[0035] Reference Figure 1 , Figure 2 and Figure 3 A guiding slope 37 is provided on the side of the limiting protrusion 36 facing the second joint 2. The guiding slope 37 is used to abut and slide with the limiting ball 34. The limiting protrusion 36 is used to press the limiting ball 34 against the card groove 35. The card groove 35 can be an annular groove, which is convenient for pipeline installation and adjustment, or a single groove to reduce the relative rotation between the second joint 2 and the first joint 1, or a plurality of grooves can be arranged circumferentially, which is convenient for installation and reduces relative rotation.

[0036] Reference Figure 1 , Figure 2 and Figure 3 A limiting sealing ring 38 is arranged between the first joint 1 and the sleeve 31. A limiting accommodating groove 9 for placing the limiting sealing ring 38 is opened on the first joint 1. The limiting sealing ring 38 is used to limit the separation of the sleeve 31 and the first joint 1. The limiting sealing ring 38 is located on the side of the limiting ball 34 facing away from the limiting compression spring 32.

[0037] The worker pushes the sleeve 31 in the reverse direction, and the sleeve 31 compresses the limit spring 32. As the worker continues to push the sleeve 31, the limit ball 34 abuts and slides against the guide slope 37 until the limit ball 34 abuts against the inner wall of the sleeve 31. Then the worker inserts the second joint 2 into the first joint 1 until the limit groove 33 is connected with the slot 35. The worker releases the sleeve 31, and the limit spring 32 restores its deformation and pushes the sleeve 31 to reset. The sleeve 31 drives the limit protrusion 36 to reset. The guide slope 37 on the limit protrusion 36 squeezes the limit ball 34, so that a part of the limit ball 34 is pushed into the slot 35 on the second joint 2.

[0038] Reference Figure 1 , Figure 2 and Figure 3 The first closing component 4 includes a sliding cylinder 41 coaxially slidably arranged in the first joint 1, the circumferential outer wall of the sliding cylinder 41 contacts the circumferential inner wall of the first joint 1, a first sealing ring 42 is arranged between the first joint 1 and the sliding cylinder 41, a first accommodating groove 10 for placing the first sealing ring 42 is opened on the first joint 1, and a valve core plate 11 is coaxially arranged on the first joint 1.

[0039] Reference Figure 1 , Figure 2 and Figure 3 A first valve core 43 is coaxially welded on the valve core plate 11. The valve core plate 11 is provided with a first opening 44 for circulating medium. A first cone head 45 is coaxially welded on the first valve core 43. The diameter of the first cone head 45 is larger than the diameter of the first valve core 43. A first compression spring 46 is supported between the sliding cylinder 41 and the valve core plate 11. The first compression spring 46 is used to press the sliding cylinder 41 against the first cone head 45.

[0040] Reference Figure 1 , Figure 2 and Figure 3 An anti-slip component 47 is arranged between the first joint 1 and the sliding cylinder 41. The anti-slip component 47 includes an anti-slip ring 471 coaxially welded to the sliding cylinder 41. The outer diameter of the anti-slip ring 471 is larger than the outer diameter of the sliding cylinder 41. An anti-slip groove 472 for the anti-slip ring 471 to slide is opened on the inner side wall of the first joint 1. An external connecting tube 12 is bolted to the first joint 1, and the external connecting tube 12 is used to press the valve core plate 11 onto the first joint 1.

[0041] Reference Figure 1 , Figure 2 and Figure 3 The second closing component 5 includes a second valve core 51 coaxially slidably arranged in the second joint 2, the second valve core 51 is provided with a second opening 52 for circulating the medium, the second valve core 51 is coaxially welded with a second cone head 53, the second cone head 53 is used to abut against the first cone head 45, an outer tube 54 is coaxially bolted to the second joint 2, and a second sealing ring 55 is arranged between the outer tube 54 and the second joint 2.

[0042] Reference Figure 1 , Figure 2 and Figure 3 A guide cone ring 6 is coaxially welded on the second joint 2, and the diameter of the guide cone ring 6 gradually decreases along the direction from the outer tube 54 to the second valve core 51. A second compression spring 56 is supported between the second valve core 51 and the outer tube 54. The second compression spring 56 is used to push the second cone head 53 to block the guide cone ring 6. The second joint 2 is used to push the sliding tube 41 to slide, and a third sealing ring 7 is arranged between the second joint 2 and the sliding tube 41.

[0043] When the second joint 2 is inserted into the first joint 1, the first cone head 45 abuts against the second cone head 53, and the guide cone ring 6 abuts against the sliding cylinder 41, the first compression spring 46 and the second compression spring 56 are both compressed, the sliding cylinder 41 is separated from the first cone head 45, and the second cone head 53 is separated from the guide cone ring 6 until the limiting ball 34 is stuck in the groove 35. At this time, the medium flows in the order of the first opening 44 on the valve core plate 11, the gap between the first cone head 45 and the sliding cylinder 41, the gap between the second cone head 53 and the guide cone ring 6, and the second opening 52 on the second valve core 51.

[0044] When the second joint 2 is separated from the first joint 1, the first compression spring 46 in the first joint 1 restores its deformation, and the first compression spring 46 pushes the sliding cylinder 41 close to the first cone head 45. Under the limiting action of the anti-slip ring 471 and the anti-slip groove 472, the sliding cylinder 41 is sleeved on the first cone head 45, thereby realizing the blocking effect on the first joint 1; the second compression spring 56 in the second joint 2 restores its deformation, and the second compression spring 56 pushes the second valve core 51 to reset, and the second valve core 51 is pressed tightly against the guide cone ring 6, thereby realizing the blocking effect on the second joint 2.

[0045] The implementation principle of a self-closing quick pipe joint in an embodiment of the present application is as follows: a worker pushes the sleeve 31 in the reverse direction, and the sleeve 31 compresses the limiting compression spring 32. As the worker continues to push the sleeve 31, the limiting ball 34 abuts and slides against the guiding slope 37 until the limiting ball 34 abuts against the inner wall of the sleeve 31. Then the worker inserts the second joint 2 into the first joint 1 until the limiting groove 33 is connected with the slot 35. The worker releases the sleeve 31, and the limiting compression spring 32 restores its deformation and pushes the sleeve 31 to reset. The sleeve 31 drives the limiting protrusion 36 to reset. The guiding slope 37 on the limiting protrusion 36 squeezes the limiting ball 34, so that a part of the limiting ball 34 is pushed into the slot 35 on the second joint 2.

[0046] When the second joint 2 is inserted into the first joint 1, the first cone head 45 abuts against the second cone head 53, and the guide cone ring 6 abuts against the sliding cylinder 41, the first compression spring 46 and the second compression spring 56 are both compressed, the sliding cylinder 41 is separated from the first cone head 45, and the second cone head 53 is separated from the guide cone ring 6 until the limiting ball 34 is stuck in the groove 35. At this time, the medium flows in the order of the first opening 44 on the valve core plate 11, the gap between the first cone head 45 and the sliding cylinder 41, the gap between the second cone head 53 and the guide cone ring 6, and the second opening 52 on the second valve core 51.

[0047] When the second joint 2 is separated from the first joint 1, the first compression spring 46 in the first joint 1 restores its deformation, and the first compression spring 46 pushes the sliding cylinder 41 close to the first cone head 45. Under the limiting action of the anti-slip ring 471 and the anti-slip groove 472, the sliding cylinder 41 is sleeved on the first cone head 45, thereby realizing the blocking effect on the first joint 1; the second compression spring 56 in the second joint 2 restores its deformation, and the second compression spring 56 pushes the second valve core 51 to reset, and the second valve core 51 is pressed tightly against the guide cone ring 6, thereby realizing the blocking effect on the second joint 2.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A self-closing quick pipe joint, characterized in that: The invention comprises a first joint (1) and a second joint (2), wherein the first joint (1) is used to communicate with the second joint (2), a connecting piece (3) is provided between the first joint (1) and the second joint (2), a first closing component (4) is provided on the first joint (1), and the first closing component (4) is used to seal the first joint (1), and a second closing component (5) is provided on the second joint (2), and the second closing component (5) is used to seal the second joint (2).

2. A self-sealing quick pipe joint according to claim 1, characterized in that: The connecting member (3) comprises a sleeve (31) slidably sleeved on the first joint (1), a limit compression spring (32) is supported between the sleeve (31) and the first joint (1), a limit slot (33) is opened between the inner and outer walls of the first joint (1), a limit ball (34) is slidably arranged in the limit slot (33), the second joint (2) is provided with a clamping groove (35) for clamping the limit ball (34), a limit protrusion (36) is arranged on the sleeve (31), a guide inclined surface (37) is arranged on the side of the limit protrusion (36) facing the second joint (2), the limit protrusion (36) is used to press the limit ball (34) against the clamping groove (35), and a limit sealing ring (38) is arranged between the first joint (1) and the sleeve (31).

3. A self-sealing quick pipe joint according to claim 2, characterized in that: The first sealing component (4) comprises a sliding cylinder (41) coaxially slidably arranged in the first joint (1), a first sealing ring (42) is arranged between the first joint (1) and the sliding cylinder (41), a first valve core (43) is coaxially arranged on the first joint (1), a first opening (44) for circulating medium is opened on the first valve core (43), a first cone head (45) is coaxially arranged on the first valve core (43), a first compression spring (46) is supported between the sliding cylinder (41) and the first valve core (43), the first compression spring (46) is used to press the sliding cylinder (41) against the first cone head (45), and an anti-slip component (47) is arranged between the first joint (1) and the sliding cylinder (41).

4. A self-sealing quick pipe joint according to claim 3, characterized in that: The anti-slip component (47) comprises an anti-slip ring (471) coaxially arranged on the sliding cylinder (41); the outer diameter of the anti-slip ring (471) is larger than the outer diameter of the sliding cylinder (41); and an anti-slip groove (472) for the anti-slip ring (471) to slide is provided on the inner side wall of the first joint (1).

5. A self-sealing quick pipe joint according to claim 3, characterized in that: The second sealing component (5) comprises a second valve core (51) coaxially slidably arranged in the second joint (2); the second valve core (51) is provided with a second opening (52) for circulating medium; the second valve core (51) is coaxially provided with a second cone head (53); the second cone head (53) is used to abut against the first cone head (45); the second joint (2) is coaxially provided with an outer tube (54); a second sealing ring (55) is provided between the outer tube (54) and the second joint (2); a second compression spring (56) is supported between the second valve core (51) and the outer tube (54); the second compression spring (56) is used to push the second cone head (53) to seal the second joint (2).

6. A self-sealing quick pipe joint according to claim 5, characterized in that: A guide cone ring (6) is coaxially arranged on the second joint (2), and the diameter of the guide cone ring (6) gradually decreases along the direction from the outer tube (54) to the second valve core (51), and the second cone head (53) is used to seal the guide cone ring (6).

7. A self-sealing quick pipe joint according to claim 5, characterized in that: The second joint (2) is used to push the sliding cylinder (41) to slide, and a third sealing ring (7) is provided between the second joint (2) and the sliding cylinder (41).

8. A self-sealing quick pipe joint according to claim 2, characterized in that: The sleeve (31) is provided with anti-slip grooves (8).

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