Two-in-one quick coupling having liquid extraction and gas intake functions

Abstract

The present invention relates to the technical field of ultra-clean drum couplings. Specifically disclosed is a two-in-one quick coupling having liquid extraction and gas intake functions, the two-in-one quick coupling comprising a body, wherein a moving assembly is provided inside the body, and a liquid non-return assembly and a gas non-return assembly are separately connected to one side of the body; the body comprises a connector located outside the moving assembly; a first connector pipe and a second connector pipe are separately provided on one side of the connector, and an external thread is provided at the bottom of the connector; the moving assembly comprises a pneumatic system located above the connector; a moving cylinder is connected to one end of a connection rod, and one side of the moving cylinder is separately provided with a first switching hole and a second switching hole. The design of the moving assembly enables automated liquid extraction and gas intake operations for ultra-clean drums, thus reducing labor and manual operation time and improving the working efficiency of the coupling. The design of the liquid non-return assembly and the gas non-return assembly ensures effective sealing during liquid extraction and gas intake, thus avoiding cross-contamination.

Description

A two-in-one quick connector with liquid pumping and air intake functions Technical Field

[0001] This invention relates to the technical field of cleanroom tank connectors, and in particular to a two-in-one quick connector with liquid extraction and air intake functions. Background Technology

[0002] Quick-connect couplings that combine liquid extraction and gas inlet functions are typically integrated connection devices that combine liquid extraction and gas delivery capabilities. They are widely used in systems requiring simultaneous liquid and gas delivery or extraction, such as chemical processing, fluid control systems, mechanical equipment, and laboratory instruments. Their main feature is integrating two previously separate functions (liquid extraction and gas inlet) into a single coupling, facilitating operation and connection, and improving the system's compactness and convenience. Couplings used with laminar flow tanks are typically designed to ensure sealing and stability while also being able to withstand certain pressures or flow rates.

[0003] The quick-connect coupling, which combines liquid extraction and gas intake functions, offers the following main features: 1. Liquid extraction: The quick-connect coupling connects to liquid delivery pipelines, enabling liquid extraction or transfer. 2. Gas intake: The coupling design allows gases (such as nitrogen or other gases) to enter the system through a dedicated channel for gas transfer, pressure regulation, or venting. This dual-function design allows both operations to be performed on a single coupling, reducing the number of connection points and piping in the system.

[0004] Existing quick-connect couplings that combine liquid extraction and air intake functions have the following technical problems: 1. Sealing issues: The sealing design of multi-functional couplings is complex. Since they need to simultaneously perform both liquid extraction and air intake functions, insufficient sealing design can easily lead to air or liquid leakage, thus affecting system efficiency and safety. 2. Corrosion and wear resistance: When handling different fluids (e.g., liquids and gases), the coupling material must possess good corrosion resistance, wear resistance, and high-pressure resistance. Otherwise, with increased use, the coupling may corrode, wear, or age, leading to performance degradation or malfunction.

[0005] 3. Complex operation problem: For connectors that require both liquid extraction and air intake, manually changing the flow of the two fluids will affect the working efficiency of the connector. If corrosive fluids are involved, manual replacement will also pose a health hazard. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] The problem to be solved by the present invention is to provide a two-in-one quick connector with liquid pumping and air intake functions to overcome the defects in the prior art.

[0008] (II) Technical Solution

[0009] To solve the aforementioned technical problem, the present invention provides a two-in-one quick connector with liquid pumping and gas intake functions, including a body, a movable component disposed inside the body, and a liquid check component and a gas check component respectively connected to one side of the body.

[0010] The body includes a connector located outside the movable component, with a first connector tube and a second connector tube respectively provided on one side of the connector, and an external thread provided below the connector.

[0011] The movable component includes a pneumatic system located above the connector. A piston rod is provided inside the pneumatic system. One end of the piston rod is connected to a connecting rod. A first compression spring is provided on the outer ring of the connecting rod. One end of the connecting rod is connected to a movable cylinder. A first displacement hole and a second displacement hole are respectively provided on one side of the movable cylinder.

[0012] The liquid check valve assembly includes a first sleeve connected to the first connector pipe, a second sleeve disposed on the inner ring of the first sleeve, a third sleeve disposed inside the second sleeve, a first end cap disposed on the outer ring of the second sleeve, a first connecting shaft disposed inside the second sleeve, a second compression spring disposed on the outer ring of the first connecting shaft, a first connector disposed at one end of the first connecting shaft, a rubber piston disposed at one end of the first connector, a reverse osmosis membrane disposed on one side of the rubber piston, and a second connector disposed at the other end of the first connecting shaft;

[0013] The gas check valve assembly includes a fourth sleeve connected to the second connector pipe, a fifth sleeve connected to one end of the fourth sleeve, a first sealing ring provided at one end of the fifth sleeve, a second end cap provided on one side of the first sealing ring, a second sealing ring provided inside the second end cap, a gas selective membrane provided inside the fourth sleeve, a third compression spring provided inside the fifth sleeve, and a stop piston provided on one side of the third compression spring.

[0014] Furthermore, the axis of the first connector tube is parallel to the axis of the second connector tube.

[0015] Furthermore, the axis of the piston rod of the moving component is on the same straight line as the axis of the connecting rod.

[0016] Furthermore, the axis of the first transposition hole is parallel to the axis of the second transposition hole.

[0017] Furthermore, the axis of the movable cylinder is parallel to the axis of the connecting rod, and the axis of the movable cylinder is perpendicular to the axes of the first shifting hole and the second shifting hole, respectively.

[0018] Furthermore, the outer diameter of the first sleeve is larger than the outer diameter of the second sleeve, and the outer diameter of the first end cap is larger than the outer diameter of the second sleeve.

[0019] Furthermore, the axis of the first sleeve and the axis of the second sleeve are on the same straight line, and the second sleeve and the third sleeve are coaxially arranged.

[0020] Furthermore, the axis of the first connecting shaft and the axis of the first connecting member are on the same straight line, and the first connecting member and the second connecting member are arranged coaxially.

[0021] Furthermore, the fourth sleeve and the fifth sleeve are coaxially arranged, and the axis of the fifth sleeve and the axis of the second end cap are on the same straight line.

[0022] Furthermore, the outer diameter of the first sealing ring is larger than the outer diameter of the second sealing ring, and the axis of the first sealing ring and the axis of the second sealing ring are on the same straight line.

[0023] (III) Beneficial Effects

[0024] Compared with existing technologies, the two-in-one quick connector with liquid extraction and air intake functions provided by this invention has the following advantages:

[0025] 1. The present invention provides a two-in-one quick connector with liquid extraction and air intake functions. The two-in-one quick connector includes a body, a movable component is provided inside the body, a first connector tube and a second connector tube are respectively provided on one side of the connector, one end of the first connector tube is connected to a liquid check component, one end of the second connector tube is connected to a gas check component, and an external thread is provided at the bottom of the connector. The two-in-one quick connector with liquid extraction and air intake functions has a simple overall structure design, is easy to install and use, and is convenient for liquid extraction and air intake work in ultra-clean tanks for fluid transportation, etc.

[0026] 2. This invention provides a two-in-one quick connector with liquid extraction and air intake functions. The movable component of this two-in-one quick connector includes a pneumatic system located above the connector. Inside the pneumatic system is a piston rod, one end of which is connected to a connecting rod. A first compression spring is installed around the outer ring of the connecting rod, and another end of the connecting rod is connected to a movable cylinder. A first shifting hole and a second shifting hole are respectively provided on one side of the movable cylinder. By activating the pneumatic system above the movable component, the pneumatic system drives the internal piston to extend and retract, thereby causing the connecting rod connected to the piston rod to reciprocate vertically. This, in turn, causes the movable cylinder connected to one end of the connecting rod to move vertically. Depending on the usage requirements, when the first shifting hole is coaxial with the first connector tube, the connector performs the liquid extraction function; when the movable cylinder moves to a position where the second shifting hole is coaxial with the second connector tube, gas is introduced into the cleanroom. This movable component design automates the liquid extraction and air intake operation of the cleanroom, saving manpower and manual operation time, and improving the working efficiency of the connector in liquid extraction.

[0027] 3. This invention provides a two-in-one quick connector with liquid extraction and air intake functions. The liquid check assembly of this two-in-one quick connector includes a first sleeve, an inner ring of which is fitted with a second sleeve, an outer ring of which is fitted with a first end cap, an interior of which is fitted with a first connecting shaft, an outer ring of which is fitted with a second compression spring, a rubber piston at one end of the first connector, and a reverse osmosis membrane on one side of the rubber piston. When the connector extracts liquid, the liquid in the tank flows upward under air pressure, passes through the first connector tube, and enters the liquid check assembly. The force pushes the rubber piston, which compresses the second compression spring on one side. The second compression spring compresses to one side, causing the rubber piston to move away from the end that is tightly fitted with the first sleeve. Liquid passes through the liquid check assembly. After the liquid is pumped out, the second compression spring, under its own elastic force, restores its elasticity and pushes the rubber piston on one side back to the end that is fitted with the first sleeve, thereby sealing the liquid check assembly and preventing external liquid from flowing back into the clean tank. In addition, since a reverse osmosis membrane is installed in the first connector tube, gas is prevented from entering the liquid check assembly during the liquid pumping process, which helps to avoid cross-contamination.

[0028] 4. The present invention provides a two-in-one quick connector with liquid extraction and gas intake functions. The gas check assembly of this two-in-one quick connector includes a fourth sleeve connected to a second connector tube, a first sealing ring at one end of the fifth sleeve, a second end cap on one side of the first sealing ring, a second sealing ring inside the second end cap, and a gas selective membrane inside the fourth sleeve. When gas enters the connector, the external gas pressure compresses the stop piston inside the gas check assembly. The stop piston moves, and the third compression spring on the compression side moves to one side, thereby disengaging the stop piston. After the second end cap is closed, external gas enters the cleanroom. After the gas intake is complete, the third compression spring rebounds under its own elastic force and compresses the stop piston to fit tightly against the end of the second end cap, thus limiting the stop piston inside the second end cap. Since the fifth sleeve is equipped with a first sealing ring and a second sealing ring on one side, it can prevent the gas check assembly from leaking gas. In addition, a gas selective membrane is provided inside the fourth sleeve to prevent liquid from entering the gas check assembly during the liquid extraction process, which would cause corrosive fluid to corrode the gas check assembly and affect its performance and service life. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 is a first perspective view of a two-in-one quick connector with liquid pumping and air intake functions according to the present invention.

[0031] Figure 2 is a second perspective view of a two-in-one quick connector with liquid pumping and air intake functions according to the present invention.

[0032] Figure 3 is a third perspective view of a two-in-one quick connector with liquid pumping and air intake functions according to the present invention.

[0033] Figure 4 is a fourth perspective view of a two-in-one quick connector with liquid pumping and air intake functions according to the present invention.

[0034] Figure 5 is a cross-sectional view of a two-in-one quick connector with liquid pumping and air intake functions according to the present invention.

[0035] Figure 6 is a cross-sectional view of the moving component of a two-in-one quick connector with liquid pumping and air intake functions according to the present invention.

[0036] Figure 7 is a cross-sectional view of a liquid check component of a two-in-one quick connector with liquid pumping and air intake functions according to the present invention.

[0037] Figure 8 is a cross-sectional view of a gas check component of a two-in-one quick connector with liquid extraction and gas intake functions according to the present invention.

[0038] The component names corresponding to the various reference numerals in the figure are as follows: 1. Body; 101. Connector; 102. First connector tube; 103. Second connector tube; 104. External thread; 2. Moving assembly; 201. Pneumatic system; 202. Piston rod; 203. Connecting rod; 204. First compression spring; 205. Moving cylinder; 206. First shifting hole; 207. Second shifting hole; 3. Liquid check valve assembly; 301. First sleeve; 302. Second sleeve; 303. 304. Second compression spring; 305. First end cap; 306. First connecting shaft; 307. Rubber piston; 308. First connecting piece; 309. Third sleeve; 310. Reverse osmosis membrane; 400. Second connecting piece; 410. Gas check assembly; 401. Fourth sleeve; 402. Fifth sleeve; 403. First sealing ring; 404. Second sealing ring; 405. Second end cap; 406. Third compression spring; 407. Stop piston; 408. Gas selective membrane. Detailed Implementation

[0039] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0040] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0042] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0043] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0044] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0045] Referring to Figures 1 to 8, the present invention provides a two-in-one quick connector with liquid pumping and gas intake functions, including a body 1, a movable component 2 disposed inside the body 1, and a liquid check component 3 and a gas check component 4 respectively connected to one side of the body 1.

[0046] The main body 1 includes a connector 101 located outside the movable component 2. A first connector tube 102 and a second connector tube 103 are respectively provided on one side of the connector 101, and an external thread 104 is provided below the connector 101.

[0047] The moving component 2 includes a pneumatic system 201 located above the connector 101. A piston rod 202 is provided inside the pneumatic system 201. One end of the piston rod 202 is connected to a connecting rod 203. A first compression spring 204 is provided on the outer ring of the connecting rod 203. One end of the connecting rod 203 is connected to a moving cylinder 205. A first shifting hole 206 and a second shifting hole 207 are respectively provided on one side of the moving cylinder 205.

[0048] The liquid check assembly 3 includes a first sleeve 301 connected to the first connector pipe 102, a second sleeve 302 disposed on the inner ring of the first sleeve 301, a third sleeve 308 disposed inside the second sleeve 302, a first end cap 304 disposed on the outer ring of the second sleeve 302, a first connecting shaft 305 disposed inside the second sleeve 302, a second compression spring 303 disposed on the outer ring of the first connecting shaft 305, a first connector 307 disposed at one end of the first connecting shaft 305, a rubber piston 306 disposed at one end of the first connector 307, a reverse osmosis membrane 309 disposed on one side of the rubber piston 306, and a second connector 310 disposed at the other end of the first connecting shaft 305.

[0049] The gas check assembly 4 includes a fourth sleeve 401 connected to the second connector pipe 103, a fifth sleeve 402 connected to one end of the fourth sleeve 401, a first sealing ring 403 provided at one end of the fifth sleeve 402, a second end cap 405 provided on one side of the first sealing ring 403, a second sealing ring 404 provided inside the second end cap 405, a gas selective membrane 408 provided inside the fourth sleeve 401, a third compression spring 406 provided inside the fifth sleeve 402, and a stop piston 407 provided on one side of the third compression spring 406.

[0050] Referring to Figures 1 to 6, the axis of the first connector tube 102 is parallel to the axis of the second connector tube 103, the axis of the piston rod 202 of the moving assembly 2 is on the same straight line as the axis of the connecting rod 203, the axis of the first shifting hole 206 is parallel to the axis of the second shifting hole 207, the axis of the moving cylinder 205 is parallel to the axis of the connecting rod 203, and the axis of the moving cylinder 205 is perpendicular to the axes of the first shifting hole 206 and the second shifting hole 207 respectively.

[0051] Referring to Figures 1 to 7, the outer diameter of the first sleeve 301 is larger than the outer diameter of the second sleeve 302, the outer diameter of the first end cap 304 is larger than the outer diameter of the second sleeve 302, the axis of the first sleeve 301 and the axis of the second sleeve 302 are on the same straight line, the second sleeve 302 and the third sleeve 308 are coaxially arranged, the axis of the first connecting shaft 305 and the axis of the first connecting member 307 are on the same straight line, and the first connecting member 307 and the second connecting member 310 are coaxially arranged.

[0052] Referring to Figures 1 to 8, the fourth sleeve 401 and the fifth sleeve 402 are coaxially arranged. The axis of the fifth sleeve 402 and the axis of the second end cover 405 are on the same straight line. The outer diameter of the first sealing ring 403 is larger than the outer diameter of the second sealing ring 404. The axis of the first sealing ring 403 and the axis of the second sealing ring 404 are on the same straight line.

[0053] The working principle and specific workflow of a two-in-one quick connector with liquid extraction and air intake functions are as follows:

[0054] Connect the connector 101 of the two-in-one quick connector with liquid extraction and air intake functions to the clean tank, install the moving component 2 inside the connector 101, connect the first sleeve 301 of the liquid check component 3 to the first connector tube 102, and connect the fourth sleeve 401 of the gas check component 4 to the second connector tube 103. After installation.

[0055] The pneumatic system 201 above the moving assembly 2 is activated. The pneumatic system 201 drives the internal piston rod 202 to extend and retract, thereby causing the connecting rod 203 connected to the piston rod 202 to reciprocate in the vertical direction. This, in turn, causes the moving cylinder 205 connected to one end of the connecting rod 203 to move in the vertical direction. Thus, according to the usage requirements, when the first switching hole 206 moves to be coaxial with the first connector tube 102, the connector 101 performs the liquid extraction function. When the moving cylinder 205 moves to the point where the second switching hole 207 is coaxial with the second connector tube 103, gas is introduced into the clean container. The design of this moving assembly 2 realizes the automated operation of liquid extraction and air intake of the clean container, saving manpower and manual operation time, and improving the working efficiency of the liquid extraction of the connector 101.

[0056] When the connector 101 is pumping liquid, the liquid in the tank flows upward under the action of air pressure, passes through the first connector pipe 102 and enters the liquid check assembly 3. The liquid pressure pushes the rubber piston 306, which compresses the second compression spring 303 on one side. The second compression spring 303 compresses to one side, causing the rubber piston 306 to move away from the end that is tightly attached to the first sleeve 301. The liquid passes through the liquid check assembly 3. After the pumping is completed, the second compression spring 303 returns to its elasticity under its own elastic force and pushes the rubber piston 306 on one side back to the end that is attached to the first sleeve 301, thereby sealing the liquid check assembly 3 and preventing external liquid from flowing back into the clean tank. In addition, since a reverse osmosis membrane 309 is provided in the first connector pipe 102, gas is prevented from entering the liquid check assembly 3 during the pumping process, which helps to avoid cross-contamination.

[0057] When air enters through connector 101, the external gas pressure compresses the stop piston 407 inside the gas check assembly 4. The stop piston 407 moves, and the third compression spring 406 on the compression side moves to one side, thereby causing the stop piston 407 to disengage from the limit of the second end cover 405. External gas enters the clean chamber. After the air intake is completed, the third compression spring 406 rebounds under its own elastic force and compresses the stop piston 407 to fit tightly against the end of the second end cover 405, thereby limiting the stop piston 407 inside the second end cover 405. Since the fifth sleeve 402 is provided with a first sealing ring 403 and a second sealing ring 404 on one side, it can prevent the gas check assembly 4 from leaking gas. In addition, a gas selective membrane 408 is provided inside the fourth sleeve 401, which can prevent liquid from entering the gas check assembly 4 during the liquid extraction process, causing corrosive fluid to corrode the gas check assembly 4 and affecting the performance and service life of the gas check assembly 4.

[0058] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.

[0059] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A two-in-one quick connector with liquid pumping and air intake functions, characterized in that: Includes a body (1), inside which a moving component (2) is provided, and a liquid check component (3) and a gas check component (4) are respectively connected to one side of the body (1). The body (1) includes a connector (101) located outside the movable component (2), one side of the connector (101) The joint is provided with a first connector tube (102) and a second connector tube (103), and an external thread (104) is provided below the connector (101). The moving component (2) includes a pneumatic system (201) located above the connector (101). The pneumatic system (201) is provided with a piston rod (202). One end of the piston rod (202) is connected to a connecting rod (203). A first compression spring (204) is provided around the connecting rod (203). One end of the connecting rod (203) is connected to a moving cylinder (205). A first shift hole (206) and a second shift hole (207) are respectively provided on one side of the moving cylinder (205). The liquid check assembly (3) includes a first sleeve (301) connected to the first connector pipe (102), a second sleeve (302) is provided on the inner ring of the first sleeve (301), a third sleeve (308) is provided inside the second sleeve (302), a first end cap (304) is provided on the outer ring of the second sleeve (302), a first connecting shaft (305) is provided inside the second sleeve (302), a second compression spring (303) is provided on the outer ring of the first connecting shaft (305), a first connector (307) is provided at one end of the first connecting shaft (305), a rubber piston (306) is provided at one end of the first connector (307), a reverse osmosis membrane (309) is provided on one side of the rubber piston (306), and a second connector (310) is provided at the other end of the first connecting shaft (305). The gas check assembly (4) includes a fourth sleeve (401) connected to the second connector pipe (103), a fifth sleeve (402) connected to one end of the fourth sleeve (401), a first sealing ring (403) provided at one end of the fifth sleeve (402), a second end cap (405) provided on one side of the first sealing ring (403), a second sealing ring (404) provided inside the second end cap (405), a gas selective membrane (408) provided inside the fourth sleeve (401), a third compression spring (406) provided inside the fifth sleeve (402), and a stop piston (407) provided on one side of the third compression spring (406).

2. The two-in-one quick connector with liquid pumping and air intake functions according to claim 1, characterized in that: The axis of the first connector tube (102) is parallel to the axis of the second connector tube (103).

3. The two-in-one quick connector with liquid pumping and air intake functions according to claim 1, characterized in that: The axis of the piston rod (202) of the moving component (2) is on the same straight line as the axis of the connecting rod (203).

4. The two-in-one quick connector with liquid pumping and air intake functions according to claim 1, characterized in that: The axis of the first transposition hole (206) is parallel to the axis of the second transposition hole (207).

5. A two-in-one quick connector with liquid pumping and air intake functions according to claim 1, characterized in that: The axis of the movable cylinder (205) is parallel to the axis of the connecting rod (203), and the axis of the movable cylinder (205) is perpendicular to the axes of the first shift hole (206) and the second shift hole (207), respectively.

6. A two-in-one quick connector with liquid pumping and air intake functions according to claim 1, characterized in that: The outer diameter of the first sleeve (301) is greater than the outer diameter of the second sleeve (302), and the outer diameter of the first end cap (304) is greater than the outer diameter of the second sleeve (302).

7. A two-in-one quick connector with liquid pumping and air intake functions according to claim 1, characterized in that: The axis of the first sleeve (301) and the axis of the second sleeve (302) are on the same straight line, and the second sleeve (302) and the third sleeve (308) are coaxially arranged.

8. A two-in-one quick connector with liquid pumping and air intake functions according to claim 1, characterized in that: The axis of the first connecting shaft (305) and the axis of the first connecting member (307) are on the same straight line. The connector (307) is arranged coaxially with the second connector (310).

9. A two-in-one quick connector with liquid pumping and air intake functions according to claim 1, characterized in that: The fourth sleeve (401) and the fifth sleeve (402) are coaxially arranged, and the axis of the fifth sleeve (402) and the axis of the second end cap (405) are on the same straight line.

10. A two-in-one quick connector with liquid pumping and air intake functions according to claim 1, characterized in that: The outer diameter of the first sealing ring (403) is larger than the outer diameter of the second sealing ring (404), and the axis of the first sealing ring (403) and the axis of the second sealing ring (404) are on the same straight line.

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