Vacuum chamber evacuation and gas filling combination quick connector and method

Abstract

This invention relates to the field of rapid vacuuming and gas filling technology, and discloses a quick-connect coupling and method for vacuum chamber vacuuming and gas filling. The quick-connect coupling used in this method consists of a male and a female connector. One end of the female connector is located inside the vacuum chamber wall and communicates with the vacuum chamber. The other end of the female connector is inserted into one end of the male connector, and the other end of the male connector is connected to a vacuuming device or a special gas pipeline. The female connector is designed as an insert structure, with two sealing grooves and sealing rings and connecting threads on the outer side of the female connector body, which seal with the insertion hole in the vacuum chamber wall and connect to the vacuum chamber body via threads. The male and female connectors are connected using a quick-connect meshing structure, and the external connection uses a threaded and flanged structure. This invention can both evacuate and fill with special gases. It achieves leak-free sealing in the separated state, during insertion, and in the connected state. It overcomes the defect of traditional ball valves having a high vacuum leakage rate under high vacuum conditions. Its structural design is reasonable and easy to use.

Description

Technical Field

[0001] This invention relates to the field of rapid vacuuming and gas filling technology, and in particular to a quick connector and method for vacuuming and filling a vacuum chamber. This quick connector device for vacuuming and filling a special gas is particularly useful because the male connector can be directly pulled out during the vacuuming process or after filling with the special gas without affecting the vacuum level in the vacuum chamber. Background Technology

[0002] Currently, vacuum chambers are typically equipped with ball valves. These valves are fixedly mounted on the vacuum chamber, with one end connected to the chamber and in the closed position to maintain the vacuum level. When evacuating the chamber, the other end of the ball valve is connected to the vacuum generator. The ball valve is opened, and after evacuation, it is closed first, then the connection between the vacuum generator and the ball valve is disconnected. When filling with gas, the other end of the ball valve is connected to a special gas pipeline. The special gas pipeline valve is opened, followed by the ball valve, to fill the vacuum chamber. After filling, the ball valve is closed first, then the special gas pipeline valve is closed, and the connection between the ball valve and the special gas pipeline is disconnected.

[0003] Ball valves are simple to operate, but when used in high vacuum conditions, they have a high leakage rate and require suitable pipe fittings, which increases the number of vacuum leakage points. Ball valves are also large in size and are not aesthetically pleasing when installed on a vacuum chamber, affecting the overall integration of the vacuum chamber. Summary of the Invention

[0004] The purpose of this invention is to provide a quick-connect coupling and method for vacuum chamber evacuation and gas filling. This device combines a vacuum chamber for evacuation and subsequent filling with a special gas. The female connector of the quick-connect coupling is inserted into the inner wall of the vacuum chamber, while the male connector is connected to a vacuum generator or a special gas pipeline. After evacuation or filling with the special gas, the male connector is pulled out, and the female connector provides a leak-free seal in reverse, maintaining the vacuum level of the vacuum chamber and solving the problems existing in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] A quick-connector for vacuum chamber evacuation and inflation comprises a male connector and a female connector. One end of the female connector is disposed inside the wall of the vacuum chamber and communicates with the vacuum chamber. The other end of the female connector is inserted into and corresponds to one end of the male connector. The other end of the male connector is connected to a vacuum evacuation device or a special gas pipeline. The female connector and the male connector have a leak-free vacuum sealing function in the separated state, during the insertion process, and in the connected state.

[0007] The female connector is configured as an insert structure, comprising a female connector body, a spring seat, a retaining ring, an O-ring, a spring, a female connector valve core, a female connector valve core seal, and an O-ring. The outer side of the female connector body has two sealing grooves and connecting threads, and is fitted with two sealing rings to seal the insert hole in the vacuum chamber wall. Its connecting threads mate with the connecting threads of the vacuum chamber body. At one end of the female connector body's inner cavity, a spring seat, a spring, a female connector valve core, and a female connector valve core seal are sequentially arranged. The retaining ring axially limits the spring seat, and the spring is positioned between the spring seat and the female connector valve core. The spring force pushes the female connector valve core and the female connector valve core seal mounted on it into the sealing hole within the female connector body's inner cavity to form a seal. At the other end of the female connector body's inner cavity, an O-ring is provided. When the male connector and female connector are quickly inserted, the O-ring first contacts the male connector body to form a seal.

[0008] A quick-connector for vacuum chamber evacuation and inflation is provided. The female connector has a square hole at the inner cavity opening, and an inner groove is provided behind the square hole to form a stepped surface with the square hole, which serves as the locking surface of the male connector. Two positioning pin holes are provided on the outer end face of the female connector, which serve as axial positioning holes for the positioning sleeve on the male connector.

[0009] A quick-connector for vacuuming and filling a vacuum chamber, wherein the outer circular surface of the valve core of the female connector is provided with a flow channel groove that mates with the inner cavity of the female connector, so as to ensure that the valve core of the female connector remains in mate with the inner cavity of the female connector after the male connector is pushed and moved, and at the same time form a connecting flow channel after the female connector and the male connector are inserted.

[0010] One end of the female connector valve core is provided with a spring positioning step surface to keep the spring installed in the center. The other end of the female connector valve core is provided with an outer conical structure, which is used to engage with the inner conical hole at the end of the male connector valve core when the female connector and male connector are quickly inserted, so as to keep the positions of the female connector valve core and male connector valve core aligned after the female connector and male connector are engaged.

[0011] A quick-connector for vacuum chamber evacuation and inflation is provided, wherein the spring preload generates a thrust on the valve core of the female connector that is greater than the thrust generated on the valve core of the female connector by atmospheric pressure, thereby achieving a reliable vacuum seal between the female connector and the vacuum chamber.

[0012] A quick-connect coupling for vacuum chamber evacuation and inflation, the male coupling comprising a male coupling body, a locking and positioning pin, a shaft retaining ring, a positioning sleeve, a male coupling valve core seal, a positioning sleeve spring, a male coupling valve core, a male coupling valve core spring, an external connector, and an external connector seal. The male coupling connects to the female coupling using a quick-connect toothed structure, and the external connector uses a threaded or flanged structure. The male coupling is threaded. The male coupling body contains a male coupling valve core, a male coupling valve core seal, a male coupling valve core spring, an external connector, and an external connector seal. The male coupling body and the male coupling valve core seal... The core mating surface uses a tapered hole for positioning, controlling radial and axial degrees of freedom; the male connector valve core seal is set on the tapered surface of the male connector valve core, which is used to press the tapered surface of the male connector valve core into contact with the connector body under the action of the male connector valve core spring force, thus sealing the external connector end at the male connector inlet and the male connector body end at the outlet; when the male connector and female connector are inserted, the female connector valve core pushes the male connector valve core away from the tapered surface of the male connector body under the action of the spring force, opening the communication channel between the male connector and the female connector.

[0013] A quick-connect coupling for vacuum chamber evacuation and inflation is provided. A positioning sleeve is installed on the outer side of the male connector body, and the positioning sleeve and the male connector body are fitted in a segmental configuration. A retaining ring on the outer side restricts the axial position of the positioning sleeve. A positioning sleeve spring is positioned between the male connector body step and the positioning sleeve, and is used to push the positioning sleeve against the retaining ring. When the male and female connectors are inserted, rotating the positioning sleeve causes the male connector body to rotate, engaging with the female connector body. A locking positioning pin falls into the pin hole of the female connector body to achieve locking. External meshing teeth are provided on the outer side of the male connector body for quick insertion and connection between the male and female connectors.

[0014] A quick-connector for vacuuming and filling a vacuum chamber, wherein the spring force of the male connector valve core is less than that of the spring, and is used to move the male connector valve core in the male connector to open the seal.

[0015] A quick-connector for vacuuming and filling a vacuum chamber, wherein the female connector, male connector, O-ring, female connector valve core seal, male connector valve core seal, and external connector seal are made of fluororubber.

[0016] A method for quick coupling of vacuum chamber evacuation and gas filling includes: quick insertion of male connector into female connector and quick removal of male connector from female connector;

[0017] 1) Quick insertion method of male connector into female connector: a. The male connector includes a male connector body; b. The male connector body first contacts the O-ring in the female connector hole to achieve a seal; c. Then, it pushes open the female connector valve core; d. After the female connector valve core is pushed open, it remains stationary in the position under the action of the spring force, and the male connector valve core is pushed away from the sealing surface, realizing the connection between the male and female connectors; e. After the male and female connectors are inserted into place, f. Pull and rotate the positioning sleeve to drive the male connector body; g. Make the external teeth of the male connector mesh with the stepped surface of the female connector body; h. Release the positioning sleeve, so that the locking positioning pin falls into the positioning hole of the female connector body to achieve locking.

[0018] 2) Method for quickly pulling out the female connector from the male connector;

[0019] a. First, pull the positioning sleeve to disengage the positioning pin from the positioning pin hole;

[0020] b. Rotate the positioning sleeve to disengage the male connector body from the female connector body;

[0021] c. The male connector pops outward under the spring force of the female connector;

[0022] e. As the male connector pops outward, the female connector valve core, together with the female connector valve core seal, is pushed into the mating hole of the female connector body under the action of spring force, thus achieving vacuum sealing of the vacuum chamber.

[0023] f. At the same time, the male connector valve core moves with the male connector body and disengages from the female connector body;

[0024] g. Under the spring force of the male connector valve core spring, it resets and contacts the conical surface of the male connector body to form a seal;

[0025] h. The female and male connectors complete their respective sealing under the action of the spring;

[0026] i. As the male connector continues to pop outward;

[0027] j. The male connector body separates from the O-ring inside the female connector body, completing the separation of the male and female connectors;

[0028] Among them, the male and female connectors can achieve leak-free sealing of the vacuum chamber and special gas chamber during insertion, engagement, and withdrawal, meeting the needs of various vacuum application equipment.

[0029] Due to the adoption of the above technical solution, the present invention has the following advantages:

[0030] A quick-connector and method for vacuum chamber evacuation and gas filling are disclosed. This device, consisting of a male and a female connector, allows for both vacuum evacuation and special gas filling. It achieves leak-free sealing in the separated, inserted, and engaged states, overcoming the high leakage rate of traditional ball valves under high vacuum conditions. Its structural design is reasonable and it is easy to use. Attached Figure Description

[0031] Figure 1 A schematic diagram of the male and female connectors of the quick-connect coupling for vacuuming and filling the vacuum chamber in their separated state.

[0032] Figure 2 This is a structural diagram showing the male and female connectors of the quick-connect coupling for vacuuming and inflation in the plugged-in state.

[0033] Figure 3 This is a schematic diagram of the female connector body structure for the quick-connect coupling for vacuuming and gas filling.

[0034] Figure 4 This is a schematic diagram of the valve core structure of the female connector for the quick-connect vacuum and gas filling coupling.

[0035] Figure 5 A schematic diagram of the male connector body structure for quick-connect vacuum and gas filling couplings.

[0036] Figure 6 This is a schematic diagram of the male valve core structure for a quick-connect coupling for vacuuming and inflation.

[0037] In the figure: female connector body (1), spring seat (2), retaining ring for hole (12), O-ring (13), spring (4), female connector valve core (3), female connector valve core seal (14), O-ring (15); male connector body (5), locking positioning pin (6), shaft retaining ring (16), positioning sleeve (7), male connector valve core seal (17), positioning sleeve spring (8), male connector valve core (9), male connector valve core spring (10), external connector (11), external connector seal (18). Detailed Implementation

[0038] The present invention will be further illustrated by the following embodiments and accompanying drawings.

[0039] As attached Figure 1 To be continued Figure 6As shown, a quick-connect coupling for vacuum chamber evacuation and inflation consists of a male connector and a female connector. One end of the female connector is located inside the wall of the vacuum chamber and communicates with the vacuum chamber. The other end of the female connector is inserted into and corresponds to one end of the male connector. The other end of the male connector is connected to a vacuum evacuation device or a special gas pipeline. The female connector and the male connector have a leak-free vacuum sealing function in the separated state, during the insertion process, and in the connected state.

[0040] The female connector is configured as an insert structure, comprising a female connector body 1, a spring seat 2, a retaining ring 12, an O-ring 13, a spring 4, a female connector valve core 3, a female connector valve core seal 14, and an O-ring 15. The female connector body 1 has two sealing grooves and connecting threads on its outer side, and is fitted with two sealing rings to seal the insert hole in the vacuum chamber wall. Its connecting threads mate with the connecting threads of the vacuum chamber. At one end of the inner cavity of the female connector body 1, the spring seat 2, spring 4, female connector valve core 3, and female connector valve core seal 14 are sequentially arranged. The retaining ring 12 axially limits the spring seat 2. The spring 4 is installed between the spring seat 2 and the female connector valve core 3. The spring force of the spring 4 pushes the female connector valve core 3 and the female connector valve core seal 14 mounted on the female connector valve core 3 into the sealing hole within the inner cavity of the female connector body 1 to form a seal. At the other end of the inner cavity of the female connector body 1, an O-ring 15 is provided. When the male connector and female connector are quickly inserted, the O-ring 15 first contacts the male connector body 5 on the male connector to form a sealing device.

[0041] A quick-connector for vacuum chamber evacuation and gas filling is a combination quick-connector for evacuating a vacuum chamber and filling it with special gas. It consists of two parts: a male connector and a female connector. The female connector is inserted into the wall 19 of the vacuum chamber and connected to the vacuum chamber. The male connector is connected to the vacuum tube 20 and connected to the vacuum device or the special gas pipeline. The female connector and the male connector can achieve a leak-free vacuum seal in the separated state, during the insertion process and the connected state.

[0042] The female connector includes a female connector body, a spring seat, a retaining ring for the bore, an O-ring, a spring, a female connector valve core, a female connector valve core seal, and an O-ring for insertion and sealing with the male connector. When used alone, the spring presses against the female connector valve core, causing the O-ring to enter the mating hole and form a seal. The spring's pre-compression load is much greater than the load applied to the female connector valve core by atmospheric pressure, ensuring the vacuum chamber remains sealed even when the pressure inside the vacuum chamber is absolute zero. The female connector valve core 3 has an outer circle 3.4 that mates with the inner hole of the female connector body 1, ensuring that the female connector valve core remains mated with the inner hole of the female connector body after the male connector pushes and moves, while simultaneously forming a connecting flow channel after insertion of the female and male connectors. The inner cavity opening of the female connector body 1 has an end square hole 1.2 structure, with an inner groove behind the end square hole forming a limiting step surface 1.1, which serves as the locking surface of the male connector body. The outer circle of the female connector body has two seals and an insertion connection thread connecting to the insertion hole.

[0043] The male connector includes a male connector body 5, a locking and locating pin 6, a shaft retaining ring 16, a locating sleeve 7, a male connector valve core seal 17, a locating sleeve spring 8, a male connector valve core 9, a male connector valve core spring 10, an external connector 11, and an external connector seal 18. The male connector valve core is housed within the male connector body and mates with the conical surface of the male connector body. A male connector valve core seal is located on the conical surface of the male connector valve core. After being pushed by the male connector valve core spring, the conical surface of the male connector valve core mates with the conical surface inside the male connector body to form a seal. The pre-compression spring force applied by the male connector valve core spring to the male connector valve core is greater than the load applied by atmospheric pressure to the male connector valve core, ensuring the male connector seal. External meshing teeth are provided on the outer side of the male connector body to achieve meshing engagement between the male connector and the female connector. A locating sleeve and a locating pin are also provided. The locating sleeve is reset by a locating spring, and the locating sleeve and the ball joint of the male connector valve core are positioned in a locating fit. When the locating sleeve is rotated, the male connector body rotates synchronously.

[0044] This is a quick-connect coupling for evacuating and filling a vacuum chamber with special gases. It consists of two parts: a male connector (B) and a female connector (A). The female connector (A) is attached to the inner wall of the vacuum chamber, and the male connector (B) is attached to the evacuation tube. (See attached image.) Figure 1 , 2 As shown.

[0045] The female connector is a plug-in structure. The outer side of the female connector body 1 is provided with a mating outer cylindrical surface and a thread for connecting with the plug-in hole. Two sealing rings 13 are provided on the outer cylindrical surface. During installation, it is assembled into the inner wall of the vacuum chamber.

[0046] The female connector includes a female connector body 1, a spring seat 2, a retaining ring 12, an O-ring 13, a spring 4, a female connector valve core 3, a female connector valve core seal 14, and an O-ring 15. The female connector valve core seal is installed in the sealing groove of the female connector core. The female connector valve core 3 is assembled in the hole of the female connector body 1. The spring is assembled on the stepped surface of the end face of the female connector valve core 3. The spring seat is assembled in the hole of the female connector body and mates with the spring hole. The stepped surface of the spring seat abuts against the end face of the spring. The retaining ring is assembled in the retaining ring groove of the retaining ring inside the hole of the female connector body to restrict the axial movement of the spring seat and compress the spring to form a spring pre-compression force. The O-ring 15 is assembled in the O-ring groove of the hole of the female connector body.

[0047] The spring 4 of the female connector in the embodiment Figure 1 Under the assembly conditions shown, the spring force after pre-compression is much greater than the load exerted by atmospheric pressure on the female connector valve core, and the sum of this load and the resistance to overcoming the resistance of pushing the female connector valve core, along with its seal, into the mating hole of the female connector body. This ensures... Figure 1 The female connector shown can achieve a reliable seal under absolute vacuum conditions.

[0048] The female connector valve core 3 has a flow channel groove on its outer circumference that mates with the female connector body, as in the embodiment. Figure 4As shown, when the female connector and the male connector are mated, the female connector valve core moves under the push of the male connector, and the flow channel groove 3.3 is exposed to form a flow channel through the mating hole; one end of the female connector valve core 3 is provided with a spring positioning step 3.1 to install the spring, and the other end is provided with an end positioning outer cone surface 3.5 that aligns with the male connector valve core when the male and female connectors are inserted.

[0049] The O-ring 15, which is installed in the hole of the female connector body, is positioned at the sealing groove 3.2 position to ensure that when the male and female connectors are inserted, the male connector body first contacts the O-ring to form a seal between the male and female connectors.

[0050] As in the example Figure 3 As shown, the female connector body 1 has a square hole 1.2 at its end, which engages with the square structure at the external teeth 5.2 of the male connector body after being pushed in and rotated. A locating pin hole 1.3 on the end face of the female connector body provides position locking after the male and female connectors are engaged. (See embodiment). Figure 5 As shown,

[0051] The male connector includes a male connector body 5, a locking and positioning pin 6, a shaft retaining ring 16, a positioning sleeve 7, a male connector valve core seal 17, a positioning sleeve spring 8, a male connector valve core 9, a male connector valve core spring 10, an external connector 11, and an external connector seal 18. The male connector valve core seal is disposed on the conical surface of the male connector valve core. The male connector valve core 9 is provided with a spring mounting hole, which communicates with the flow channel. The spring is arranged in the spring mounting hole. The male connector valve core, the male connector valve core seal, and the spring are disposed in the inner hole of the male connector body. The external connector is threaded onto the end face of the male connector body. The external connector compresses the spring to make the conical surface of the male connector valve core engage with the male connector body 5. The male connector seal is pressed onto the conical surface of the male connector body along with the male connector valve core to form a seal. A positioning sleeve is provided on the outside of the male connector body. The positioning sleeve is connected to the spherical cap cylindrical surface of the male connector body. The positioning sleeve is axially positioned by a shaft retaining ring and reset by the positioning sleeve spring. Two positioning pins are provided on the positioning sleeve. After the male connector and the female connector are inserted and engaged, the positioning pins are inserted into the positioning hole of the female connector for positioning and locking.

[0052] The male connector body 5 is as described in the embodiment. Figure 5 As shown, the male connector body has a sealing cylindrical surface 5.1 that mates with the hole in the female connector body. Behind the sealing cylindrical surface 5.1 is a square segmental cylindrical surface 5.3, which can pass through the square hole of the female connector. An annular groove is provided behind the square segmental cylindrical surface 5.3, and the four corners of the square segmental cylindrical surface 5.3 form a special tooth shape. A spherical segmental cylindrical surface and a spring-mounted cylindrical surface are provided on the outer side of the male connector body. The male connector body internally includes a flow channel, a tapered sealing positioning surface 5.4, and an external connector connection thread.

[0053] The positioning sleeve has a ball notch in its inner hole, which mates with the cylindrical surface of the ball notch on the outer side of the male connector.

[0054] The male connector valve core 9 is as described in the embodiment. Figure 6 As shown, the male connector valve core 9 has an inner conical surface at its end. When the male connector is inserted into the female connector, this inner conical surface aligns with the outer conical surface of the female connector valve core. The middle of the male connector valve core 9 has a conical sealing and positioning surface, and a male valve core sealing groove is provided on the conical surface. A V-groove is provided behind the conical surface, and a flow channel hole is provided on the side of the V-groove, which intersects with the spring mounting hole provided at the other end of the male connector valve core. The male connector valve core 9 also has a spring mounting cavity 9.1, a conical sealing groove 9.2, an outer conical surface 9.3, and a positioning inner conical hole 9.4.

[0055] One end of the male connector 5 is provided with a positioning hole for the male connector valve core, forming a mounting hole for the male connector valve core spring with the male connector valve. The other end is provided with a connection structure for the vacuum generator or external pipeline, such as threads or flanges; this embodiment uses a threaded structure. The external connector and flange use an O-ring sealing type. The materials of the female connector, male connector, O-ring 13, female connector valve core seal 14, O-ring 15, male connector valve core seal 17, and external connector seal 18 are all made of fluororubber. Male connector valve core...

[0056] A method for using a quick-connect coupling for vacuuming and filling a vacuum chamber includes: using the male and female couplings separately, quickly inserting the male coupling into the female coupling, and quickly pulling the male coupling out of the female coupling.

[0057] 1) Male and female connectors used individually;

[0058] a. When the female connector is used alone, the spring 4 presses against the valve core 3 of the female connector, so that the valve core sealing element 14 of the female connector enters the mating hole of the female connector body 1 to achieve sealing;

[0059] b. When the male connector is used alone, the male connector valve core spring 10 presses against the male connector valve core 9, so that the male connector valve core sealing element 17 is pressed against the male connector including the male connector body 5 to achieve a seal;

[0060] 2) Quick insertion of male connector into female connector: a. The male connector includes male connector body 5; b. Male connector body 5 first contacts the O-ring 15 inside the female connector hole to achieve a seal; c. Then, the female connector valve core 3 is pushed open; d. The female connector valve core 3 is pushed open, and under the action of the spring force of spring 4, the position of the female connector valve core 3 remains unchanged, and the male connector valve core 9 is pushed away from the sealing surface, disengaging from contact with the male connector body 5, thus achieving communication between the male and female connectors; e. After the male and female connectors are inserted into place, f. Pull and rotate the positioning sleeve 7 to drive the male connector body 5; g. Make the external teeth of the male connector body 5 mesh with the inner stepped surface of the female connector body 1; h. Release the positioning sleeve 7, so that the locking positioning pin 6 falls into the positioning hole of the female connector body 1 to achieve locking.

[0061] 3) Method for quickly pulling out the female connector from the male connector;

[0062] a. First, pull the positioning sleeve to disengage the positioning pin from the positioning pin hole; b. Rotate the positioning sleeve to disengage the male connector body from the female connector body; c. The male connector pops outward under the force of the female connector spring; e. As the male connector pops outward, the female connector valve core, along with the female connector valve core seal, is pushed into the mating hole of the female connector body under the force of the spring, achieving a vacuum seal in the vacuum chamber; f. Simultaneously, the male connector valve core moves with the male connector body and disengages from the female connector body; g. Under the force of the male connector valve core spring, it resets and contacts the conical surface of the male connector body to form a seal; h. The female and male connectors complete their respective seals under the action of the spring; i. As the male connector continues to pop outward; j. The male connector body disengages from the O-ring in the inner cavity of the female connector body, completing the separation of the male and female connectors;

[0063] Among them, the male and female connectors can achieve leak-free sealing of the vacuum chamber and special gas chamber during insertion, engagement, and withdrawal, meeting the needs of various vacuum application equipment.

Claims

1. A vacuum chamber evacuation and gas fill combination quick connect, characterized by: The female joint is provided at one end in the wall of the vacuum chamber and communicates with the vacuum chamber, and the other end is inserted into the corresponding male joint, and the other end of the male joint is connected with the vacuum device or the special gas pipeline; the female joint and the male joint have the function of vacuum sealing without leakage in the separated state, the insertion process and the combined state; the female joint is provided in the form of insertion structure and includes a female joint body (1), a spring seat (2), a hole stop ring (12), an O-shaped ring (13), a spring (4), a female joint valve core (3), a female joint valve core sealing element (14) and an O-shaped ring (15); two sealing grooves and connecting threads are provided on the outer side of the female joint body (1), and two sealing rings are provided to seal the insertion hole of the wall of the vacuum chamber; the connecting threads are connected with the connecting threads of the vacuum chamber; The female joint body (1) is sequentially provided at one end with the spring seat (2), the spring (4), the female joint valve core (3) and the female joint valve core sealing element (14); the hole stop ring (12) limits the axial position of the spring seat (2), the spring (4) is arranged between the spring seat (2) and the female joint valve core (3), the spring force of the spring (4) pushes the female joint valve core (3) and the female joint valve core sealing element (14) arranged on the female joint valve core (3) into the sealing hole in the inner cavity of the female joint body (1) to form a seal; the other end of the inner cavity of the female joint body (1) is provided with the O-shaped ring (15), which is used to form a sealing device when the male joint is quickly inserted into the female joint, and the O-shaped ring (15) is first contacted with the male joint body (5) on the male joint to form a sealing device; The hole opening of the inner cavity of the female joint body (1) is provided in the form of a square hole, an inner groove is provided behind the square hole to form a stepped surface as the locking surface of the male joint body (5); two positioning pin holes are provided on the outer end surface of the female joint body (1) as the axial positioning holes of the positioning sleeve (7) on the male joint; The male joint comprises a male joint body (5), a locking positioning pin (6), an axial baffle (16), a positioning sleeve (7), a male joint valve core seal (17), a positioning sleeve spring (8), a male joint valve core (9), a male joint valve core spring (10), an external joint (11), and an external joint seal (18). The male joint and the female joint are connected by a fast insertion toothed structure, and the external joint adopts a threaded and flanged structure. The male joint is threaded. The inner hole of the male joint body (5) is provided with the male joint valve core (9), the male joint valve core seal (17), the male joint valve core spring (10), the external joint (11), and the external joint seal (18). The mating surface of the male joint body (5) and the male joint valve core (9) adopts a tapered hole matching positioning to control the radial and axial degrees of freedom. The male joint valve core seal (17) is arranged on the tapered surface of the male joint valve core (9) and is used to make the tapered surface of the male joint valve core (9) contact the joint body (5) under the spring force of the male joint valve core spring (10), so as to press the male joint valve core seal (17) to seal the end of the external joint (11) of the male joint inlet and the end of the male joint body (5) of the outlet. When the male joint is inserted into the female joint, the female joint valve core (3) is pushed away from the tapered surface of the male joint body (5) under the spring force of the spring (4), so that the male joint and the female joint are connected. The positioning sleeve (7) is arranged on the outside of the male joint body (5) and is matched with the male joint body (5) in a circular gap type. The axial baffle (16) arranged on the outside limits the axial position of the positioning sleeve (7). The positioning sleeve spring (8) is arranged between the step of the male joint body (5) and the positioning sleeve (7) and is used to push the positioning sleeve against the axial baffle (16). When the male joint is inserted into the female joint, the positioning sleeve (7) is rotated to drive the male joint body (5) to rotate, so that the male joint body (5) is engaged with the female joint body (1). The locking positioning pin (6) falls into the pin hole of the female joint body (1) to achieve locking. The male joint body (5) is provided with external engagement teeth on the outside and is used to quickly insert the male joint into the female joint.

2. A vacuum chamber evacuation and gas filling combination quick connector according to claim 1, characterized in that: The outer circular surface of the female joint valve core (3) and the inner cavity hole of the female joint body (1) are matched with a flow channel groove, which is used to keep the female joint valve core (3) matched with the inner hole of the female joint body (1) after being pushed by the male joint body (5) and to form a connected flow channel after the male joint is inserted into the female joint. One end of the female joint valve core (3) is provided with a spring positioning step surface to keep the spring (4) centered. The other end of the female joint valve core (3) is provided with an outer circular taper structure, which is combined with an inner circular taper hole arranged at the end of the male joint valve core (9) when the male joint is quickly inserted into the female joint, so that the female joint valve core (3) and the male joint valve core (9) are centered after the male joint is combined with the female joint.

3. The vacuum chamber evacuation and gas filling combination quick connector of claim 1, wherein: The spring (4) is preloaded to generate a pushing force on the female joint valve core (3) that is greater than the pushing force of atmospheric pressure on the female joint valve core (3), so as to reliably seal the vacuum chamber of the female joint.

4. The vacuum chamber evacuation and gas charge combination quick connector of claim 1, wherein: The male joint valve core spring (10) spring force is less than the spring (4) spring force, for the male joint in the male joint valve core (9) movement, seal open.

5. The vacuum chamber evacuation and gas filling combination quick connector of claim 1, wherein: The female joint, male joint, O-ring (13), female joint valve core seal (14), O-ring (15), male joint valve core seal (17), outer joint seal (18) material using fluorine rubber material.

6. A method for quick plugging of a vacuum chamber evacuation and gas filling combination quick connector according to claim 1, characterized in that it comprises: Male and female joint alone using state, male joint fast inserted into female joint method and male joint fast pulled out of female joint method; 1), male and female joint alone using state; a. female joint alone using state, spring (4) tight female joint valve core (3), so that the female joint valve core seal (14) into the female joint body (1) fit hole to realize sealing; b. male joint alone using state, male joint valve core spring (10) tight male joint valve core (9), so that the male joint valve core seal (17) close to the male joint containing male joint body (5), realize sealing; 2) male joint fast inserted into female joint method, a. male joint containing male joint body (5), b. male joint body (5) first contact with female joint hole O-ring (15) to realize sealing, c. then open female joint valve core (3), d. female joint valve core (3) is open, under the action of spring (4) spring force, female joint valve core (3) position remains unchanged, male joint valve core (9) is open from the sealing surface, away from the male joint body (5) contact, realize male and female joint communication; e. male and female joint inserted into place, f. pull and rotate the positioning sleeve (7) driven male joint body (5), g. make male joint body (5) outer teeth and female joint body (1) inner step surface meshing, h. loosen the positioning sleeve (7), so that the locking positioning pin (6) fall into the female joint body (1) positioning hole, realize locking; 3) male joint fast pulled out of female joint method; a. first pull the positioning sleeve, so that the positioning pin is out of the positioning pin hole; b. rotate the positioning sleeve, so that the male joint body and the female joint body are disengaged; c. male joint is outwards under the action of female joint spring force; d. with the male joint outwards, the female joint valve core together with the female joint valve core seal is pushed into the female joint body fit hole under the action of spring force, realize vacuum cavity vacuum sealing; e. at the same time, the male joint valve core moves with the male joint body, and the female joint body is out of contact; f. under the action of male joint valve core spring spring force, reset, contact with the male joint body taper surface to form a seal; g. female joint and male joint complete their sealing under the action of spring; h. with the male joint continue to pop out; i. male joint body and female joint body inner cavity O-ring are out of contact, complete the separation of male joint and female joint; Among them, male and female joint in the process of insertion, combination and pull out can realize the vacuum cavity and special gas cavity without leakage sealing, meet the needs of various vacuum application equipment.

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