Full-flow quick-change connector

Abstract

The utility model discloses a full-flow quick-change connector, and relates to the technical field of quick-change connectors, in particular to a full-flow quick-change connector which comprises a core sleeve, an H connector, a valve core, a sealing core and an air inlet nozzle, flow channels are formed in the core sleeve, the valve core is in a spherical shape, the sealing core is made of rubber materials, and a spherical groove is formed in one end of the sealing core. Through the cooperative arrangement of the core sleeve, the valve core, the sealing core and the air inlet nozzle, the full-flow quick-change connector has the effect of full-flow flowing of fluid media, after the core sleeve, the valve core, the sealing core and the air inlet nozzle are installed together, an internal flow channel is in a linear communication state, the fluid media can normally flow in the flow channel in a full-flow mode, the cross section of the flow channel cannot be reduced by the valve core and the like, and the flow channel is not damaged. And the fluid medium cannot be hindered, and full-flow conveying of the fluid medium can be achieved. Compared with the prior art, the fluid medium cannot be blocked due to reduction of the cross section of the flow channel, so that pressure drop cannot be generated, and the efficiency of conveying the fluid medium cannot be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of quick-release joints, in particular to a full-flow quick-release joint. Background Technique

[0002] A quick-release joint, also known as a quick connector, is a sealed connector that can be quickly plugged in, connected, and disconnected. In a traditional quick-release joint (such as the one disclosed in the Chinese patent application with the publication number: CN201661800U and the patent name: Quick-release Joint), an air inlet nozzle is pressed into the quick-release joint, and the sealing core inside the quick-release joint is pushed inward to achieve the effect of air intake from the side. Due to the existence of the valve core, the cross-sectional area of the gas flow-in is greatly reduced (up to 65%), and the air pressure at the using end is also significantly reduced, so that the functions of pneumatic products cannot be fully exerted, and the efficiency is greatly discounted, about 50% of the state.

[0003] In the prior art, after the quick-release joint is ventilated, the ball valve in the middle has a certain obstructive effect on the flow of the fluid medium, thus generating a pressure drop and reducing the use efficiency of the tool. For this reason, we propose a full-flow quick-release joint to solve the above problems. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a full-flow quick-release joint, which solves the problems put forward in the above background technique.

[0006] (II) Technical Solutions

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions: A full-flow quick-release joint, including a core sleeve, an H-joint, a valve core, a sealing core, and an air inlet nozzle, all of which are internally provided with flow channels. The valve core is spherical, the sealing core is made of rubber material, one end of the sealing core is provided with a spherical groove, and the end of the valve core where a flow port is located is seated in the spherical groove of the sealing core; the core sleeve is composed of a first hexagonal part and a sleeve part, the end wall surface of the sleeve part away from the first hexagonal part is curved, and a curved chute is provided on the curved wall surface of the sleeve part; the valve core and the sealing core are inserted into the sleeve part of the core sleeve, and the valve core is respectively rotationally connected to the sealing core and the sleeve part; one end of the air inlet nozzle penetrates through the chute on the sleeve part, and the end of the air inlet nozzle is inserted into the valve core; the air inlet nozzle includes a plug-in part, and a raised ring is fixedly connected to the outer side wall of the plug-in part; after the air inlet nozzle rotates and slides along the chute on the sleeve part, the sleeve part limits and clamps the raised ring of the air inlet nozzle, and at the same time, the air inlet nozzle drives the valve core to rotate, and after rotation, the flow channel of the valve core is opened or closed.

[0008] Optionally, one end of the H-joint is threadedly connected to the first hexagonal part of the core sleeve.

[0009] Optionally, the H joint is composed of a first cylindrical part, a second hexagonal part, and a second threaded cylindrical part. External threads are engraved on the outer side walls of the first cylindrical part and the second threaded cylindrical part; internal threads are engraved on the inner side wall of the first hexagonal part of the core sleeve, and the second threaded cylindrical part is threadedly connected to the first hexagonal part.

[0010] Optionally, a limiting hole is provided on the wall of the sleeve part of the core sleeve, a limiting pin is inserted into the limiting hole of the sleeve part, and the end of the limiting pin is inserted into the core seal.

[0011] Optionally, an annular groove is provided at one end of the core seal away from the valve core, and an O-ring II is sleeved at the annular groove of the core seal.

[0012] Optionally, a sealing gasket is provided at one end of the core seal away from the valve core.

[0013] Optionally, the air inlet nozzle further includes a third hexagonal part and an installation cylinder part, and the installation cylinder part and the insertion part are respectively located on both sides of the third hexagonal part.

[0014] Optionally, a plurality of annular protrusions with a certain spacing are engraved on the outer side wall of the installation cylinder part.

[0015] Optionally, an external thread is engraved on the outer side wall of the installation cylinder part.

[0016] Optionally, an O-ring I is provided inside the valve core.

[0017] (III) Beneficial effects

[0018] The present utility model provides a full-flow quick-change joint, which has the following beneficial effects:

[0019] 1. For this full-flow quick-change joint, through the coordinated setting of the core sleeve, valve core, core seal, and air inlet nozzle, the full-flow quick-change joint has the effect of flowing fluid medium in full flow. After the core sleeve, valve core, core seal, and air inlet nozzle are installed together, the internal flow channel is in a straight-through connection state, and the fluid medium can flow normally in the flow channel in full flow. The valve core and the like will not reduce the cross-section of the flow channel and will not impede the fluid medium, and the full-flow transportation of the fluid medium can be realized. Compared with the prior art, the fluid medium will not be blocked due to the reduction of the flow channel cross-section, so no pressure drop will be generated, and the efficiency of transporting the fluid medium will not be reduced.

[0020] 2. The full-flow quick-change connector, through the cooperative setting of the core sleeve, valve core, sealing core, and air inlet nozzle, enables the full-flow quick-change connector to have the effects of convenient plugging and unplugging and convenient control of the opening and closing of the valve core. When it is necessary to close the valve core to stop the transmission of the fluid medium, rotate the air inlet nozzle around the valve core along the curved chute on the sleeve part of the core sleeve so that the air inlet nozzle is perpendicular to the core sleeve. The air inlet nozzle drives the valve core to rotate 90 degrees inside the core sleeve. The flow channel of the valve core is perpendicular to the flow channel of the sealing core. At the same time, the flow port of the valve core is blocked by the sealing core, thereby closing the flow channel of the valve core and realizing the closing of the flow channel of the full-flow quick-change connector (note: the rotation angle range of the air inlet nozzle driving the valve core inside the core sleeve is 0 to 90 degrees. After the air inlet nozzle drives the valve core inside the core sleeve from the linear state and the rotation angle is greater than 70 degrees, the flow port of the valve core is blocked by the sealing core, thereby closing the flow channel of the valve core and realizing the closing of the flow channel of the full-flow quick-change connector); when the air inlet nozzle is perpendicular to the core sleeve, the sleeve part of the core sleeve cannot limit and fix the raised ring of the air inlet nozzle, so that the air inlet nozzle can be pulled out from the sleeve part of the core sleeve and the valve core, and the air inlet nozzle can be completely separated from the core sleeve, enabling the full-flow quick-change connector to have the effects of convenient plugging and unplugging and convenient control of the opening and closing of the valve core.

[0021] 3. In this solution, the sleeve part of the core sleeve is designed as a curved wall surface, and a curved chute is opened on this wall surface, which can hold the air inlet nozzle in the ventilation state, avoid sudden detachment during use, prevent accidental injury, and also ensure that the air inlet nozzle can be pulled out only when it rotates to the air-off state together with the valve core when replacing the tool.

[0022] 4. In this solution, when the valve core rotates to a certain position, the ventilation hole at the bottom of the valve core is released to form a passage. This passage has no diameter change, which can enable the compressed air to flow unobstructed, ensuring that there is no pressure drop at the tool use end. Compared with traditional quick-change connectors, the tool efficiency is increased by more than 60%, and it is a product that saves emissions and improves efficiency.

[0023] 5. The utility model can enable the compressed air to flow unobstructed during use, provide a larger air flow rate, improve work efficiency, and has a simple structure and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the full-flow quick-change connector of the present invention (in the state where the air inlet nozzle and the core sleeve are on the same axis);

[0026] Figure 2Schematic three-dimensional structure diagram of the full-flow quick-change joint of the present utility model (when the air inlet nozzle and the core sleeve are in a vertical state);

[0027] Figure 3 Schematic cross-sectional structure diagram of the full-flow quick-change joint of the present utility model (when the air inlet nozzle and the core sleeve are on the same axis);

[0028] Figure 4 Exploded view of the full-flow quick-change joint of the present utility model;

[0029] Figure 5 Schematic partial cross-sectional structure diagram of the full-flow quick-change joint of the present utility model;

[0030] Figure 6 Schematic cross-sectional structure diagram of the full-flow quick-change joint of the present utility model (when the air inlet nozzle and the core sleeve are in a vertical state);

[0031] Figure 7 Schematic three-dimensional structure diagram of the air inlet nozzle in the full-flow quick-change joint of the present utility model;

[0032] Figure 8 Schematic three-dimensional structure diagram of the H-joint in the full-flow quick-change joint of the present utility model.

[0033] In the figure: 1. Core sleeve; 101. First hexagonal part; 102. Sleeve part; 103. Limit hole; 104. Chute; 2. H-joint; 201. First cylinder part; 202. Second hexagonal part; 203. Second threaded cylinder part; 3. Spool; 4. Air inlet nozzle; 401. Third hexagonal part; 402. Installation cylinder part; 403. Raised ring; 5. O-ring I; 6. Core seal; 601. Annular groove; 7. O-ring II; 8. Sealing gasket. Detailed implementation manners

[0034] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. In the description of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying.

[0035] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0036] See also Figures 1 to 7 The utility model provides a technical solution: a full-flow quick-change joint, including a core sleeve 1 with flow channels opened inside, an H joint 2, a valve core 3, a sealing core 6, and an air inlet nozzle 4. The valve core 3 is spherical, and the sealing core 6 is made of rubber material. A spherical groove is opened at one end of the sealing core 6, and the end seat of the valve core 3 where the flow channel is located is in the spherical groove of the sealing core 6.

[0037] The core sleeve 1 is composed of a first hexagonal portion 101 and a sleeve portion 102. The end wall of the sleeve portion 102 away from the first hexagonal portion 101 is curved, and a curved sliding groove 104 is provided on the curved wall of the sleeve portion 102. The valve core 3 and the sealing core 6 are inserted into the sleeve portion 102 of the core sleeve 1, and the valve core 3 is rotatably connected to the sealing core 6 and the sleeve portion 102 respectively. One end of the air inlet nozzle 4 is in the sliding groove 104 on the sleeve portion 102, and the end of the air inlet nozzle 4 is plugged into the valve core 3.

[0038] The air inlet nozzle 4 includes a plug-in portion, and a raised ring 403 is fixedly connected to the outer wall of the plug-in portion. After the air inlet nozzle 4 rotates and slides along the slide groove 104 on the sleeve portion 102, the sleeve portion 102 limits and fixes the raised ring 403 of the air inlet nozzle 4. At the same time, the air inlet nozzle 4 drives the valve core 3 to rotate, and the flow channel of the valve core 3 is opened or closed after the rotation.

[0039] Among them, the functions of the sealing core 6 are: first, to support the valve core 3 so that the valve core 3 can rotate a certain angle in its spherical groove; second, to seal the inlet port of the valve core 3. The sealing core 6 is made of rubber material. After the valve core 3 rotates a certain angle, the inlet port of the valve core 3 abuts against the side wall of the sealing core 6 or the outflow port is located on the vertical side of the sealing core 6. When the inlet port of the valve core 3 abuts against the side wall of the sealing core 6 or the outflow port is located on the vertical side of the sealing core 6, the inlet port of the valve core 3 is disconnected from the flow channel of the sealing core 6, that is, the valve core 3 is disconnected from the flow channel of the sealing core 6, thereby closing the flow channel of the valve core 3 and stopping the delivery of the fluid medium (the fluid medium refers to gas, liquid, etc., and further specifically refers to natural gas, water, etc.).

[0040] The chute 104 is composed of a first C-shaped opening and a second C-shaped opening that are interconnected. The first C-shaped opening corresponds to the flow channel of the full-flow quick-change joint, that is, the first C-shaped opening and the flow channel are on the same axis; the second C-shaped opening is perpendicular to the flow channel of the full-flow quick-change joint. The aperture of the second C-shaped opening is larger than that of the first C-shaped opening. The insertion part of the air inlet nozzle 4 passes through the sleeve part 102 of the core sleeve 1 through the second C-shaped opening. And after the end of the insertion part of the air inlet nozzle 4 is completely inserted into the valve core 3 (refer to Figure 2 , at this time the valve core 3 is in the closed state), the raised ring 403 on the air inlet nozzle 4 is located inside the sleeve part 102. Rotate the air inlet nozzle 4 so that the air inlet nozzle 4 rotates 90 degrees with the valve core 3 as the center and the chute 104 as the path. Then the air inlet nozzle 4 is located at the first C-shaped opening (refer to Figure 1 ), and the raised ring 403 on the air inlet nozzle 4 is limited and fixed by the sleeve part (102) of the core sleeve 1, so as to install the air inlet nozzle 4 on the core sleeve 1. When the air inlet nozzle 4 rotates, it drives the valve core 3 to rotate, and the flow channel of the valve core 3 and the flow channel of the sealing core 6 change from a perpendicular closed state to a linear communication state.

[0041] When it is necessary to close the valve core 3 to stop transporting the fluid medium, rotate the air inlet nozzle 4 90 degrees along the curved chute 104 of the sleeve part 102 with the valve core 3 as the center, so that the air inlet nozzle 4 is perpendicular to the core sleeve 1. The air inlet nozzle 4 drives the valve core 3 to rotate 90 degrees inside the core sleeve 1. The flow channel of the valve core 3 is perpendicular to the flow channel of the sealing core 6. At the same time, the flow port of the valve core 3 is blocked by the sealing core 6, so as to close the flow channel of the valve core 3 and realize closing the flow channel of the full-flow quick-change joint. When the air inlet nozzle 4 is perpendicular to the core sleeve 1, the sleeve part 102 of the core sleeve 1 cannot limit and fix the raised ring 403 of the air inlet nozzle 4, so that the air inlet nozzle 4 can be withdrawn from the sleeve part 102 of the core sleeve 1 and the valve core 3, so that the air inlet nozzle 4 can be completely separated from the core sleeve 1, making the full-flow quick-change joint have the effects of convenient plugging and unplugging and convenient control of the opening and closing of the valve core 3.

[0042] Specifically, one end of the H-joint 2 is threadedly connected to the first hexagonal part 101 of the core sleeve 1.

[0043] Among them, the H-joint 2 is used to limit the sealing core 6, so that the sealing core 6 is limited and blocked inside the sleeve part 102 of the core sleeve 1.

[0044] More specifically, the H-joint 2 is composed of a first cylinder part 201, a second hexagonal part 202, and a second threaded cylinder part 203. External threads are engraved on the outer side walls of the first cylinder part 201 and the second threaded cylinder part 203. Internal threads are engraved on the inner side wall of the first hexagonal part 101 of the core sleeve 1, and the second threaded cylinder part 203 is threadedly connected to the first hexagonal part 101.

[0045] Among them, the shape of the H-joint 2 refers to Figure 4。The first cylindrical part 201 of the H-connector 2 is used to connect the fluid medium conveying pipe. The first hexagonal part 101 of the core sleeve 1 is used to facilitate the screwing by the staff and is convenient for installation.

[0046] The first cylindrical part 201 of the H-connector 2 has two states. State one: Threads are engraved on the outer side wall of the first cylindrical part 201. In this state, the first cylindrical part 201 of the H-connector 2 can be fixedly installed with the fluid medium conveying pipe (specifically a rigid pipe). State two: A plurality of annular protrusions are engraved on the outer side wall of the first cylindrical part 201. In this state, the first cylindrical part 201 of the H-connector 2 can be fixedly installed with the fluid medium conveying pipe (specifically a flexible pipe).

[0047] More specifically, threads are engraved on the outer side wall of the first cylindrical part 201, and the first cylindrical part 201 of the H-connector 2 is threadedly connected to the fluid medium conveying pipe. Refer to Figure 4 。

[0048] More specifically, a plurality of annular protrusions are engraved on the outer side wall of the first cylindrical body 201, and the annular protrusions are arranged in sequence. The first cylindrical body 201 is inserted into the fluid medium conveying pipe. That is, after the first cylindrical part 201 of the H-connector 2 is inserted into the end of the fluid medium conveying pipe, a metal hoop is used to tighten the end of the fluid medium conveying pipe, so that the fluid medium conveying pipe is fastened to the first cylindrical part 20. Refer to Figure 8 。

[0049] Specifically, a limiting hole 103 is opened on the wall of the sleeve part 102 of the core sleeve 1, a limiting pin is inserted into the limiting hole 103 of the sleeve part 102, and the end of the limiting pin is inserted into the sealing core 6.

[0050] Among them, the limiting hole 103 is used for installing the limiting pin. The limiting pin is used to fixedly install the sealing core 6 inside the sleeve part 102 of the core sleeve 1. After the limiting pin penetrates the side wall of the sleeve part 102, its end is inserted into the sealing core 6.

[0051] Specifically, an annular groove 601 is opened at one end of the sealing core 6 away from the valve core 3, and an O-ring II 7 is sleeved at the annular groove 601 of the sealing core 6.

[0052] Among them, the O-ring II 7 is used to play the roles of elastic support and sealing.

[0053] Specifically, a sealing gasket 8 is arranged at one end of the sealing core 6 away from the valve core 3.

[0054] Among them, the sealing gasket 8 is used to play a sealing role to prevent the fluid medium from leaking out at the connection between the H-connector 2 and the core sleeve 1.

[0055] Specifically, the air inlet nozzle 4 further includes a third hexagonal part 401 and an installation cylindrical part 402, and the installation cylindrical part 402 and the insertion part are respectively located on both sides of the third hexagonal part 401.

[0056] Among them, the insertion part of the air inlet nozzle 4 is used to be inserted into the valve core 3. The installation cylinder part 402 of the air inlet nozzle 4 is used to connect the fluid medium conveying pipe. There are two implementation manners for the air inlet nozzle 4. Implementation manner one: A plurality of annular protrusions with a certain spacing are engraved on the outer side wall of the installation cylinder part 402; Implementation manner two: External threads are engraved on the outer side wall of the installation cylinder part 402.

[0057] Among them, the installation cylinder part 402 of the air inlet nozzle 4 shown in implementation manner one is used for fixed installation with the fluid medium conveying pipe. The fluid medium conveying pipe can be an air conveying hose. The end of the air conveying hose is sleeved on the outer side wall of the installation cylinder part 402, and a metal hoop is sleeved outside the air conveying hose. The metal hoop hoop-straps the air conveying hose, so that the air conveying hose is fixedly installed with the installation cylinder part 402 of the air inlet nozzle 4, and the air conveying hose is closely attached to the installation cylinder part 402. The inner diameter of the middle part (referring to the middle area far from the connection end) of the air conveying hose is the same as or close to the inner diameter of the installation cylinder part 402 of the air inlet nozzle 4. After the air conveying hose is fixedly installed with the installation cylinder part 402, there is no reduction in the flow channel when the fluid medium flows in their inner flow channels, that is, there is no flow resistance when the fluid medium flows from the air conveying hose to the installation cylinder part 402 of the air inlet nozzle 4, and full-flow flow can be achieved. The air conveying hose is the fluid medium conveying pipe, and the air conveying hose can specifically be a plastic hose.

[0058] The installation cylinder part 402 of the air inlet nozzle 4 shown in implementation manner two is used for fixed installation with the fluid medium conveying pipe. The fluid medium conveying pipe can adopt an air conveying hard pipe, and the air conveying hard pipe specifically adopts one of a plastic hard pipe or a metal hard pipe. The inner diameter of the middle part of the air conveying hard pipe is the same as or close to the inner diameter of the installation cylinder part 402 of the air inlet nozzle 4. After the air conveying hard pipe is fixedly installed with the installation cylinder part 402, there is no reduction in the flow channel when the fluid medium flows in their inner flow channels, that is, there is no flow resistance when the fluid medium flows from the air conveying hard pipe to the installation cylinder part 402 of the air inlet nozzle 4, and full-flow flow can be achieved.

[0059] Further specifically, a plurality of annular protrusions with a certain spacing are engraved on the outer side wall of the installation cylinder part 402. Refer to Figure 1 Figure 3 .

[0060] Among them, when the fluid medium conveying pipe that the installation cylinder part 402 needs to connect is a plastic hose, the outer side wall of the installation cylinder part 402 can be engraved with a plurality of annular protrusions with a certain spacing. The installation cylinder part 402 is inserted into the plastic hose, and the annular protrusions strengthen the fastening degree between the two.

[0061] Further specifically, external threads are engraved on the outer side wall of the installation cylinder part 402. Refer to Figure 7 .

[0062] Among them, when the fluid medium conveying pipe to which the installation cylinder part 402 needs to be connected is a plastic hard pipe or a metal pipe, the outer side wall of the installation cylinder part 402 can be engraved with external threads, and the installation cylinder part 402 of the air inlet nozzle 4 is threadedly connected to the plastic hard pipe or the metal pipe, and the installation can be carried out by a threaded connection method.

[0063] Specifically, an O-ring one 5 is arranged inside the valve core 3.

[0064] Among them, the O-ring one 5 is used for sealing, and the O-ring one 5 seals the connection between the end of the insertion part of the air inlet nozzle 4 and the valve core 3 to prevent the fluid medium from leaking out through the connection between the end of the insertion part and the valve core 3.

[0065] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. Full flow quick-change connector, characterized by: The invention comprises a core sleeve (1) with flow channels formed inside, an H-joint (2), a valve core (3), a sealing core (6), and an air inlet nozzle (4); the valve core (3) is spherical, the sealing core (6) is made of rubber material, one end of the sealing core (6) is provided with a spherical groove, and the end of the valve core (3) where a flow channel is located is seated in the spherical groove of the sealing core (6); The core sleeve (1) is composed of a first hexagonal portion (101) and a sleeve portion (102); the wall surface of one end of the sleeve portion (102) away from the first hexagonal portion (101) is curved, and a curved sliding groove (104) is provided on the curved wall surface of the sleeve portion (102); the valve core (3) and the sealing core (6) are inserted into the sleeve portion (102) of the core sleeve (1), and the valve core (3) is rotatably connected to the sealing core (6) and the sleeve portion (102) respectively; one end of the air inlet nozzle (4) is in the sliding groove (104) on the sleeve portion (102), and the end of the air inlet nozzle (4) is plugged into the valve core (3); The air inlet nozzle (4) comprises a plug-in portion, and a raised ring (403) is fixedly connected to the outer wall of the plug-in portion; after the air inlet nozzle (4) rotates and slides along the slide groove (104) on the sleeve portion (102), the sleeve portion (102) limits and fixes the raised ring (403) of the air inlet nozzle (4), and at the same time, the air inlet nozzle (4) drives the valve core (3) to rotate, and the flow channel of the valve core (3) is opened or closed after the rotation.

2. The full-flow quick-change connector according to claim 1, characterized in that: One end of the H joint (2) is threadedly connected to the first hexagonal portion (101) of the core sleeve (1).

3. The full-flow quick-change connector according to claim 2, characterized in that: The H-joint (2) is composed of a first barrel portion (201), a second hexagonal portion (202), and a second threaded barrel portion (203); the outer walls of the first barrel portion (201) and the second threaded barrel portion (203) are both engraved with external threads; the inner wall of the first hexagonal portion (101) of the core sleeve (1) is engraved with internal threads, and the second threaded barrel portion (203) is threadedly connected to the first hexagonal portion (101).

4. The full-flow quick-change connector according to claim 1, characterized in that: A limiting hole (103) is provided on the wall of the sleeve portion (102) of the core sleeve (1), a limiting pin is inserted into the limiting hole (103) of the sleeve portion (102), and the end of the limiting pin is inserted into the sealing core (6).

5. The full-flow quick-change connector according to claim 1, characterized in that: An annular groove (601) is formed at one end of the sealing core (6) away from the valve core (3), and an O-ring 2 (7) is mounted on the annular groove (601) of the sealing core (6).

6. The full-flow quick-change connector according to claim 1, characterized in that: A sealing gasket (8) is provided at one end of the sealing core (6) away from the valve core (3).

7. The full-flow quick-change connector according to claim 1, characterized in that: The air inlet nozzle (4) further comprises a third hexagonal portion (401) and a mounting tube portion (402), wherein the mounting tube portion (402) and the plug-in portion are respectively located on two sides of the third hexagonal portion (401).

8. The full-flow quick-change connector according to claim 7, characterized in that: A plurality of annular protrusions with a certain spacing are engraved on the outer side wall of the installation cylinder (402).

9. The full-flow quick-change connector according to claim 7, characterized in that: An external thread is engraved on the outer side wall of the installation cylinder (402).

10. The full-flow quick-change connector according to claim 1, characterized in that: An O-ring (5) is arranged inside the valve core (3).

Images