Novel quick connector under pressure

Abstract

The utility model relates to a connecting device capable of being quickly disassembled and assembled, in particular to a novel quick connector under pressure. A novel quick connector under pressure comprises a male connector body and a female connector body, the male connector body comprises a plug and a plug connector body, the female connector body comprises a shell and a shell connector body, the plug is arranged on the outer wall of the front portion of the plug connector body in a sleeved mode, and plug valve seats are arranged at the front end of the plug connector body and the inner wall of the plug in a clamped mode. A plug valve core sleeve is arranged in the plug valve seat, a plug valve core sleeve valve seat is arranged on the inner wall of the rear part of the plug valve core sleeve, a plug valve core sleeve valve core is arranged in the plug valve core sleeve valve seat and the plug valve core sleeve, a plug valve core rod is arranged on the inner wall of the front part of the plug valve core sleeve, the plug valve core rod is sleeved in the plug valve core, and the plug valve core is arranged in the plug. The pressure relief valve has the advantages that the shell is arranged on the shell connector body in a sleeved mode, the shell and the shell connector body can independently rotate through the circle of steel balls b, the plug valve element rod jacks the plug valve element sleeve valve element, and the partial pressure relief effect is achieved.

Description

Technical Field

[0001] The utility model relates to a quick-disassembly connection device, in particular to a new type of pressure-bearing quick connector. Background Art

[0002] Quick connectors include hydraulic quick connectors and various fluid quick connectors. It is a connection device that can quickly connect or disconnect pipelines to achieve quick disassembly and assembly. Since quick connectors have a two-way check valve function and there is no leakage when the pipeline is disconnected, they are widely used in the fields of petroleum, metallurgy, hydropower, construction machinery, ships, and electromechanical equipment. The connection structure of the quick connector is the most important part, and its connection method and structure directly determine the convenience, reliability, and product quality of the quick connector. The quick connector consists of a female connector and a male connector. When the existing quick connector is installed on the equipment pressure source, it cannot rotate, which is inconvenient in use. And sometimes there is residual pressure inside, and the common structure is difficult to operate, which may affect the use effect and safety of the quick connector. Summary of the Invention

[0003] In order to solve the above technical problems of being unable to rotate and being difficult to operate with internal pressure, the utility model provides a new type of pressure-bearing quick connector.

[0004] The technical solution of the utility model is as follows:

[0005] A new type of pressure - resistant quick - connector, including a male connector and a female connector. The male connector includes a plug and a plug joint body, and the female connector includes a housing and a housing joint body. An outer wall of the front part of the plug joint body is sleeved with a plug. A plug valve seat is clamped on the front end of the plug joint body and the inner wall of the plug. A plug valve core sleeve is arranged in the plug valve seat. A plug valve core sleeve valve seat is arranged on the inner wall of the rear part of the plug valve core sleeve. A plug valve core sleeve valve core is arranged between the plug valve core sleeve valve seat and the plug valve core sleeve. A plug valve core rod is arranged on the inner wall of the front part of the plug valve core sleeve. The plug valve core rod is sleeved in the plug valve core. The plug valve core is arranged in the plug. An anti - withdrawal groove is arranged on the outer wall of the front part of the plug. A plug valve core sleeve spring is arranged between the plug valve core sleeve valve seat and the plug valve core sleeve valve core. An outer wall of the front part of the plug valve core sleeve is sleeved with a plug valve core sleeve retaining ring gasket. A plug valve seat spring is arranged between the plug valve seat and the plug valve core sleeve retaining ring gasket. A plug valve core spring is arranged between the plug valve seat and the plug valve core rod. An outer wall of the front part of the housing joint body is sleeved with a housing. A housing valve sleeve seat is arranged on the inner wall of the front part of the housing joint body. A housing valve seat is clamped between the housing valve sleeve seat and the housing joint body. A housing valve core is arranged in the housing valve seat. A housing valve sleeve is arranged between the housing valve sleeve seat and the housing valve core. A bushing is arranged on the inner wall of the front part of the housing. A housing valve sleeve spring is arranged between the housing valve sleeve and the housing valve sleeve seat. A bushing spring is arranged between the bushing and the housing valve sleeve seat. A circular recessed groove is arranged on the outer wall of the housing joint body. A perforation runs through the rear part of the housing, and the perforation is aligned with the recessed groove. Steel ball b is injected through the perforation, and the perforation is sealed by a plug. An outer sleeve is arranged on the outer wall of the front part of the housing. The outer sleeve is connected to the steel ball. Steel ball a runs through the groove. An outer sleeve spring is arranged between the housing and the outer sleeve.

[0006] An O - ring of the plug is arranged on the outer wall of the front end of the plug joint body. An O - ring a of the plug is arranged between the plug joint body and the plug. A plug plastic king and an O - ring of the plug are recessed on the inner wall of the front part of the plug. A housing rubber ring is arranged on the outer wall of the middle part of the plug.

[0007] The rear part of the plug valve seat is larger than the front part. The outer wall of the rear part of the plug valve seat contacts with the inner wall of the plug. An O - ring of the plug valve seat and a plug valve seat plastic king are recessed on the outer wall of the rear part of the plug valve seat. The number of the plug valve seat plastic kings is two. An O - ring of the plug valve seat is arranged between the plug valve seat plastic kings. An inclined flow port is opened at the rear part of the plug valve seat. The inner wall of the front part of the plug valve seat is stepped. The inner wall of the rear part of the plug valve seat is beveled, and the bevel contacts with the rear sleeve of the plug valve core sleeve. A sealing gasket is recessed on the outer wall of the rear sleeve. A retaining ring a of the plug valve core sleeve is arranged on the inner wall of the rear sleeve. The front part of the rear sleeve is a straight rod body, and the rear sleeve is connected to the straight rod body through a stepped body. Pressure - relief holes are arranged at the rear and middle parts of the straight rod body. A plastic ring of the plug valve core sleeve is arranged on the inner wall of the rear sleeve. The plastic ring of the plug valve core sleeve contacts with the middle connecting body of the plug valve core sleeve valve core. Two smooth walls are arranged on the inner wall of the front part of the plug valve seat, and the two smooth walls are respectively used to accommodate the plug valve core spring and the plug valve seat spring. A flow channel is arranged horizontally on the plug valve core sleeve valve seat. A retaining ring b of the plug valve core sleeve is arranged on the outer wall of the front part of the plug valve core sleeve. The retaining ring b of the plug valve core sleeve contacts with the plug valve core sleeve retaining ring gasket.

[0008] On both inner walls of the plug of the housing, there are recessed housing O-rings, and on the outer wall of the front part, there is an outer retaining ring.

[0009] On the outer wall of the housing valve sleeve seat, there is a plug joint body O-ring, and on the inner wall of the housing valve sleeve seat, there are recessed housing valve sleeve seat O-rings and housing valve sleeve seat PTFE.

[0010] On the outer wall of the housing valve core, there is a recessed housing valve core O-ring.

[0011] The plug valve core sleeve valve core includes an intermediate connecting body. On the left side of the intermediate connecting body is rod a, and on the right side of the intermediate connecting body are rod b and rod c in sequence. The diameter of rod b is smaller than the diameters of rod a and rod c. The outer walls of rod a, rod b, and rod c are smooth. Rod b and rod c are connected by an inclined surface. The intermediate connecting body is a combination of a frustum of a cone and a cylinder, and the number of the combinations is two. On the outer wall of the front combination at the front part, there is an inclined surface, and the inclined surface contacts the plug valve core sleeve PTFE ring. The outer wall of the rear combination is a vertical wall, and the plug valve core sleeve spring is connected to the vertical wall.

[0012] At the front end of the plug valve core rod, there is a fixing body. The fixing body is connected to rod d through a connecting block, and the plug valve core spring is connected to the fixing body.

[0013] On the outer wall at the rear end of the housing joint body, there is a hexagon, and the inner wall of the front part of the housing and the outer wall of the front part of the plug are connected by threads.

[0014] Using the technical solution of the present utility model, the structure is novel, the design is ingenious and simple. The housing is sleeved on the housing joint body, and the two can rotate independently through a circle of steel balls b. The plug valve core rod pushes the plug valve core sleeve valve core to play a partial pressure relief role. Because of this, the pressure is small and it is easy to operate. Then it pushes the plug valve core sleeve to open the flow channel, which is suitable for operation under pressure. When the housing rubber ring is in place, the calibration groove is aligned with the inner wall of one end of the outer sleeve, which is convenient for inspection. And there are multiple sealing settings, which have a very good effect in resisting the impact of high-speed fluid and relieving the pulse pressure, improving the performance parameters of the quick connector; the processing is simple, the connection is convenient and fast, the strength is high, and the durability is good. Brief Description of the Drawings

[0015] Figure 1 is the structural schematic diagram of the present utility model;

[0016] Figure 2 is the structural schematic diagram of the female joint of the present utility model;

[0017] Figure 3 is the structural schematic diagram of the male joint of the present utility model;

[0018] Figure 4 is the structural schematic diagram of the housing of the present utility model;

[0019] Figure 5 is Figure 4 The structural schematic diagram of the AA-direction cross-section. Specific implementation manners

[0020] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. Embodiment

[0021] A new type of pressure-bearing quick connector as shown in Figures 1, 2, 3, 4, and 5 includes a male connector and a female connector. The male connector includes a plug 2 and a plug joint body 4, and the female connector includes a housing 1 and a housing joint body 14. The front outer wall of the plug joint body 4 is sleeved with the plug 2. A plug valve seat 5 is clamped on the front end of the plug joint body 4 and the inner wall of the plug 2. A plug valve core sleeve 33 is provided in the plug valve seat 5. A plug valve core sleeve valve seat 34 is provided on the inner wall of the rear part of the plug valve core sleeve 33. A plug valve core sleeve valve core 37 is provided in the plug valve core sleeve valve seat 34 and the plug valve core sleeve 33. A plug valve core rod 17 is provided on the inner wall of the front part of the plug valve core sleeve 33. The plug valve core rod 17 is sleeved in the plug valve core 6. The plug valve core 6 is provided in the plug 2. A retaining groove is provided on the front outer wall of the plug 2. A plug valve core sleeve spring 36 is provided between the plug valve core sleeve valve seat 34 and the plug valve core sleeve valve core 37. A plug valve core sleeve retaining ring gasket 28 is sleeved on the front outer wall of the plug valve core sleeve 33. A plug valve seat spring 29 is provided between the plug valve seat 5 and the plug valve core sleeve retaining ring gasket 28. A plug valve core spring 11 is provided between the plug valve seat 5 and the plug valve core rod 17. The front outer wall of the housing joint body 14 is sleeved with the housing 1. A housing valve sleeve seat 25 is provided on the inner wall of the front part of the housing joint body 14. A housing valve seat 16 is clamped between the housing valve sleeve seat 25 and the housing joint body 14. A housing valve core 26 is provided in the housing valve seat 16. A housing valve sleeve 24 is provided between the housing valve sleeve seat 25 and the housing valve core 26. A bushing 20 is provided on the inner wall of the front part of the housing 1. A housing valve sleeve spring 22 is provided between the housing valve sleeve 24 and the housing valve sleeve seat 25. A bushing spring 21 is provided between the bushing 20 and the housing valve sleeve seat 25. A circular recessed groove is provided on the outer wall of the housing joint body 14. A perforation is provided through the rear part of the housing 1, and the perforation is aligned with the recessed groove. Steel balls b15 are injected through the perforation, and the perforation is sealed by a plug 40. An outer sleeve 3 is provided on the front outer wall of the housing 1. The outer sleeve 3 is connected to steel balls a12. The steel balls a12 penetrate through the groove. An outer sleeve spring 38 is provided between the housing 1 and the outer sleeve 3.

[0022] A plug O-ring a7 is provided on the front outer wall of the plug joint body 4. The plug O-ring a7 is provided between the plug joint body 4 and the plug 2. A plug polytetrafluoroethylene 9 and a plug O-ring b19 are recessed on the front inner wall of the plug 2. A housing rubber ring 41 is provided on the outer wall of the middle part of the plug 2.

[0023] The rear part of the plug valve seat 5 is larger than the front part. The outer wall of the rear part of the plug valve seat 5 contacts the inner wall of the plug 2. The outer wall of the rear part of the plug valve seat 5 is recessed with a plug valve seat O-ring 30 and a plug valve seat PTFE 31. The number of the plug valve seat PTFE 31 is two. A plug valve seat O-ring 30 is arranged between the two plug valve seat PTFE 31. A diagonal flow port is opened at the rear part of the plug valve seat 5. The inner wall of the front part of the plug valve seat 5 is stepped. The inner wall of the rear part of the plug valve seat 5 is an inclined surface, and the inclined surface contacts the rear sleeve of the plug valve core sleeve 33. The outer wall of the rear sleeve is recessed with a sealing gasket. A plug valve core sleeve retaining ring a35 is arranged on the inner wall of the rear sleeve. The front part of the rear sleeve is a straight rod body. The rear sleeve is connected to the straight rod body through a stepped body. Pressure relief holes are arranged at the rear part and the middle of the straight rod body. A plug valve core sleeve PTFE 32 is arranged on the inner wall of the rear sleeve. The plug valve core sleeve PTFE 32 contacts the middle connecting body of the plug valve core sleeve valve core 37. Two sections of smooth walls are arranged on the inner wall of the front part of the plug valve seat 5, and the two sections of smooth walls respectively accommodate a plug valve core spring 11 and a plug valve seat spring 29. A flow channel is transversely arranged on the plug valve core sleeve valve seat 34. A plug valve core sleeve retaining ring b27 is arranged on the outer wall of the front part of the plug valve core sleeve 33, and the plug valve core sleeve retaining ring b27 contacts the plug valve core sleeve retaining ring gasket 28.

[0024] On both inner walls of the plug 40 of the housing 1, recesses are provided with housing O-rings 10, and an outer sleeve retaining ring 39 is arranged on the outer wall of the front part.

[0025] An outer plug joint body O-ring 8 is arranged on the outer wall of the housing valve sleeve seat 25, and a housing valve sleeve seat O-ring 13 and a housing valve sleeve seat PTFE 23 are recessed on the inner wall of the housing valve sleeve seat 25.

[0026] A housing valve core O-ring 18 is recessed on the outer wall of the housing valve core 26.

[0027] The plug valve core sleeve valve core 37 includes a middle connecting body. The left side of the middle connecting body is a rod body a. The right side of the middle connecting body is successively a rod body b and a rod body c. The diameter of the rod body b is smaller than the diameters of the rod body a and the rod body c. The outer walls of the rod body a, the rod body b and the rod body c are smooth. The rod body b and the rod body c are connected through an inclined surface. The middle connecting body is a combination of a frustum and a cylinder, and the number of the combinations is two. The front outer wall of the front combination is provided with an inclined surface, and the inclined surface contacts the plug valve core sleeve PTFE 32. The outer wall of the rear combination is a vertical wall, and the plug valve core sleeve spring 36 is connected to the vertical wall.

[0028] A fixing body is arranged at the front end of the plug valve core rod 17. The fixing body is connected to the rod body d through a connecting block, and the plug valve core spring 11 is connected to the fixing body.

[0029] A hexagonal body is arranged on the outer wall of the rear end of the housing joint body 14, and the inner wall of the front part of the housing 1 and the outer wall of the front part of the plug 2 are connected by threads.

[0030] In use, one of the features of this model is that the pressure-bearing structure is inside the plug 2. In normal cases, the pressure-bearing structure is inside the housing, which is convenient for scene use and interchange. The rear part of the housing joint body 14 and the rear part of the plug joint body 4 are connected to the equipment pressure source. The housing 1 can rotate independently through a circle of steel balls b15, enabling the operation to be connected. The left end of the plug 2 pushes the bushing 20 to move leftward and is threadedly connected to the housing 1. The locking of the steel ball a12 and the anti-backlash groove, as well as the threaded fixation of the plug 2 and the housing 1, are double-layer safety settings. The front end of the housing 1 contacts the convex part on the outer wall of the plug 2. Inside the convex part is the plug O-ring c42. The housing valve core 26 pushes the plug valve core 6, causing the rod body d of the plug valve core rod 17 to move rightward. The plug valve core sleeve 33 has a pressure relief hole. Since the pressure in this part is small, the rod body d first drives the rod body c to move rightward to open the first part of the flow channel space. Then, the connecting block pushes the plug valve core sleeve 33 to make the rear sleeve move away from the plug valve seat 5. The housing valve sleeve 24 blocks the front part of the housing valve sleeve seat 25. Inside, there are also the housing valve sleeve seat O-ring 13 and the housing valve sleeve seat polytetrafluoroethylene 23 to improve the sealing effect. The housing valve sleeve 24 also blocks the inner wall of the front part of the housing 1. Inside, there are the plug polytetrafluoroethylene 9 and the plug O-ring b19 to improve the sealing effect. The front part of the plug 2 and the inclined wall of the front part of the housing valve sleeve 24 form a flow channel. There is a gap between the housing valve core 26 and the housing valve sleeve 24. There are also gaps between the outer wall of the plug valve core 6 and the front outer wall of the plug valve seat 5 and the inner wall of the housing 1, which also form a flow channel. The flow channel passes through the inclined flow port and the flow channel is connected. There is a calibration groove in the middle of the housing rubber ring 41. When the inclined wall on the inner wall of the left end of the outer sleeve 3 aligns with the calibration groove, the flow channel is in place completely. Therefore, in actual operation, due to the lack of feedback, there are often problems of incomplete operation. With this setting, it is clear and convenient to operate.

[0031] It should be understood that the above are only the preferred embodiments of the present invention and are not sufficient to limit the technical solutions of the present invention. For those of ordinary skill in the art, within the spirit and principles of the present invention, additions, deletions, substitutions, transformations, or improvements can be made according to the above description. All these technical solutions after the above additions, deletions, substitutions, transformations, or improvements shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A new type of pressure - retaining quick - coupling, comprising a male connector and a female connector, characterized in that: The above includes a male connector and a female connector, and is characterized in that: the male connector includes a plug (2) and a plug joint body (4), the female connector includes a housing (1) and a housing joint body (14), the front outer wall of the plug joint body (4) is sleeved with the plug (2), a plug valve seat (5) is clamped on the front end of the plug joint body (4) and the inner wall of the plug (2), a plug valve core sleeve (33) is arranged in the plug valve seat (5), a plug valve core sleeve valve seat (34) is arranged on the inner wall of the rear part of the plug valve core sleeve (33), a plug valve core sleeve valve core (37) is arranged in the plug valve core sleeve valve seat (34) and the plug valve core sleeve (33), a plug valve core rod (17) is arranged on the inner wall of the front part of the plug valve core sleeve (33), the plug valve core rod (17) is sleeved in the plug valve core (6), the plug valve core (6) is arranged in the plug (2), a retaining groove is arranged on the front outer wall of the plug (2), a plug valve core sleeve spring (36) is arranged between the plug valve core sleeve valve seat (34) and the plug valve core sleeve valve core (37), a plug valve core sleeve retaining ring gasket (28) is sleeved on the front outer wall of the plug valve core sleeve (33), a plug valve seat spring (29) is arranged between the plug valve seat (5) and the plug valve core sleeve retaining ring gasket (28), a plug valve core spring (11) is arranged between the plug valve seat (5) and the plug valve core rod (17), the front outer wall of the housing joint body (14) is sleeved with the housing (1), a housing valve sleeve seat (25) is arranged on the inner wall of the front part of the housing joint body (14), a housing valve seat (16) is clamped between the housing valve sleeve seat (25) and the housing joint body (14), a housing valve core (26) is arranged in the housing valve seat (16), a housing valve sleeve (24) is arranged between the housing valve sleeve seat (25) and the housing valve core (26), a bushing (20) is arranged on the inner wall of the front part of the housing (1), a housing valve sleeve spring (22) is arranged between the housing valve sleeve (24) and the housing valve sleeve seat (25), a bushing spring (21) is arranged between the bushing (20) and the housing valve sleeve seat (25), a circular recessed groove is arranged on the outer wall of the housing joint body (14), a perforation is arranged through the rear part of the housing (1), the perforation is aligned with the recessed groove, steel ball b (15) is injected through the perforation, the perforation is sealed by a plug (40), an outer sleeve (3) is arranged on the front outer wall of the housing (1), the outer sleeve (3) is connected with a steel ball (12), the steel ball a (12) penetrates through the groove, and an outer sleeve spring (38) is arranged between the housing (1) and the outer sleeve (3).

2. The novel pressure - retaining quick connector according to claim 1, characterized in that: A plug O-ring (7) is arranged on the front outer wall of the plug joint body (4), a plug a O-ring (7) is arranged between the plug joint body (4) and the plug (2), a plug plastic king (9) and a plug O-ring (19) are recessed on the inner wall of the front part of the plug (2), and a housing rubber ring (41) is arranged on the outer wall of the middle part of the plug (2).

3. The novel pressure - retaining quick - connector according to claim 1, wherein: The rear part of the plug valve seat (5) is larger than the front part. The outer wall of the rear part of the plug valve seat (5) contacts the inner wall of the plug (2). The outer wall of the rear part of the plug valve seat (5) is recessed with a plug valve seat O-ring (30) and a plug valve seat polytetrafluoroethylene (31). The number of the plug valve seat polytetrafluoroethylene (31) is two. A plug valve seat O-ring (30) is arranged between the plug valve seat polytetrafluoroethylene (31). An inclined flow port is formed in the rear part of the plug valve seat (5). The inner wall of the front part of the plug valve seat (5) is stepped. The inner wall of the rear part of the plug valve seat (5) is an inclined surface, and the inclined surface contacts the rear sleeve of the plug valve core sleeve (33). The outer wall of the rear sleeve is recessed with a sealing gasket. The inner wall of the rear sleeve is provided with a plug valve core sleeve retaining ring a (35). The front part of the rear sleeve is a straight rod body. The rear sleeve is connected to the straight rod body through a stepped body. Pressure relief holes are arranged in the rear part and the middle of the straight rod body. The inner wall of the rear sleeve is provided with a plug valve core sleeve plastic ring (32). The plug valve core sleeve plastic ring (32) contacts the middle connecting body of the plug valve core sleeve valve core (37). The inner wall of the front part of the plug valve seat (5) is provided with two smooth walls, and the two smooth walls respectively accommodate a plug valve core spring (11) and a plug valve seat spring (29). A flow channel is transversely arranged on the plug valve core sleeve valve seat (34). The outer wall of the front part of the plug valve core sleeve (33) is provided with a plug valve core sleeve retaining ring b (27), and the plug valve core sleeve retaining ring b (27) contacts a plug valve core sleeve retaining ring gasket (28).

4. A novel pressure - resistant quick - coupling according to claim 1, characterized in that: On both inner walls of the plug (40) of the housing (1), shell O-rings (10) are recessed, and an outer sleeve retaining ring (39) is arranged on the outer wall of the front part.

5. A novel pressure - resistant quick - coupling according to claim 1, characterized in that: An outer wall of the housing valve sleeve seat (25) is provided with a plug joint body O-ring (8), and on an inner wall of the housing valve sleeve seat (25), a housing valve sleeve seat O-ring (13) and a housing valve sleeve seat polytetrafluoroethylene (23) are recessed.

6. The novel pressure - resistant quick - connector according to claim 1, wherein: An outer wall of the housing valve core (26) is recessed with a housing valve core O-ring (18).

7. A novel pressure - resistant quick - coupling according to claim 3, characterized in that: The plug valve core sleeve valve core (37) includes a middle connecting body. On the left side of the middle connecting body is a rod body a. On the right side of the middle connecting body are a rod body b and a rod body c in sequence. The diameter of the rod body b is smaller than the diameters of the rod body a and the rod body c. The outer walls of the rod body a, the rod body b, and the rod body c are smooth. The rod body b and the rod body c are connected through an inclined surface. The middle connecting body is a combination of a frustum and a cylinder, and the number of the combination is two. The front outer wall of the front combination is provided with an inclined surface, and the inclined surface contacts the plug valve core sleeve plastic ring (32). The outer wall of the rear combination is a vertical wall, and a plug valve core sleeve spring (36) is connected to the vertical wall.

8. A novel pressure - resistant quick - coupling according to claim 1, characterized in that: A fixing body is arranged at the front end of the plug valve core rod (17). The fixing body is connected to a rod body d through a connecting block, and a plug valve core spring (11) is connected to the fixing body.

9. The novel pressure - retaining quick connector according to claim 1, wherein: A hexagon body is arranged on the rear outer wall of the housing joint body (14). The front inner wall of the housing (1) and the front outer wall of the plug (2) are connected by threads.

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