A two-in-one quick connector with liquid extraction and air intake functions

Abstract

The invention relates to the technical field of ultra-clean barrel joints, and specifically discloses a two-in-one quick joint with the functions of extracting liquid and introducing air, comprising a main body, a moving assembly is arranged inside the main body, and one side of the main body is respectively connected with a liquid check assembly and a gas check assembly; the main body comprises a joint located outside the moving assembly, one side of the joint is respectively provided with a first joint pipe and a second joint pipe, and the lower part of the joint is provided with an external thread; the moving assembly comprises a pneumatic system located above the joint, one end of a connecting rod is connected with a moving cylinder, and one side of the moving cylinder is respectively provided with a first transposition hole and a second transposition hole; the design of the moving assembly realizes the automatic operation of extracting liquid and introducing air to the ultra-clean barrel, saves manpower and manual operation time, and improves the working efficiency of the joint; the design of the liquid check assembly and the gas check assembly can play a good sealing role in the process of extracting liquid and introducing air, and avoid cross contamination.

Description

Technical Field

[0001] The invention relates to the technical field of ultra-clean barrel joints, in particular to a two-in-one quick joint with liquid extraction and air intake functions. Background Art

[0002] The quick connector with two-in-one functions of liquid extraction and gas intake is usually a connection device that integrates the functions of liquid extraction and gas delivery. It is widely used in systems that require liquid and gas to be delivered or extracted at the same time, such as chemical processing, fluid control systems, mechanical equipment, laboratory instruments, etc. Its main feature is that it integrates two originally independent functions (liquid extraction and gas intake) into one connector, which is easy to operate and connect, and improves the compactness and convenience of the system. The connector connected to the clean barrel is usually designed to ensure sealing and stability, while being able to withstand a certain pressure or flow.

[0003] The functions of the two-in-one quick connector for liquid extraction and air intake are as follows: 1. Liquid extraction function: The quick connector can connect the liquid delivery pipeline to achieve liquid extraction or transmission through the connector. 2. Air intake function: The connector design allows gas (such as nitrogen or other gases) to enter the system through a dedicated channel for gas transmission, pressure regulation or exhaust. The two-in-one design allows these two operations to be completed on one connector, reducing the number of connection points and pipelines in the system.

[0004] The existing two-in-one quick connectors with pumping and air intake functions have the following technical problems: 1. Sealing problem: The sealing design of the multifunctional connector is complex. Since it needs to have both pumping and air intake functions, if the sealing design is not precise enough, it is easy to cause air or liquid leakage, which will affect the efficiency and safety of the system. 2. Corrosion resistance and wear resistance: When it comes to the transmission of different fluids (such as liquids and gases), the material of the connector must have good corrosion resistance, wear resistance and high pressure resistance. Otherwise, as the use time increases, the connector may corrode, wear or age, resulting in performance degradation or failure. 3. Complex operation problem: For connectors that need to have both pumping and air intake functions, if the inlet and outlet of the two fluids are manually replaced, it will affect the working efficiency of the connector. If corrosive fluids pass through, manual replacement will also cause harm to human health. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The problem to be solved by the present invention is to provide a two-in-one quick connector with the functions of pumping liquid and inletting air, so as to overcome the defects in the prior art.

[0007] (II) Technical solution

[0008] In order to solve the technical problem, the present invention provides a two-in-one quick connector with the functions of pumping liquid and inletting air, comprising a body, a moving component is arranged inside the body, and a liquid check component and a gas check component are respectively connected to one side of the body;

[0009] The body includes a joint located outside the moving assembly, a first joint pipe and a second joint pipe are respectively provided on one side of the joint, and an external thread is provided below the joint;

[0010] The moving assembly includes a pneumatic system located above the joint, a piston rod is arranged inside the pneumatic system, one end of the piston rod is connected to a connecting rod, an outer ring of the connecting rod is provided with a first compression spring, one end of the connecting rod is connected to a moving cylinder, and one side of the moving cylinder is respectively provided with a first transposition hole and a second transposition hole;

[0011] The liquid check assembly includes a first sleeve connected to the first joint pipe, a second sleeve is arranged on the inner ring of the first sleeve, a third sleeve is arranged inside the second sleeve, a first end cover is arranged on the outer ring of the second sleeve, a first connecting shaft is arranged inside the second sleeve, a second compression spring is arranged on the outer ring of the first connecting shaft, a first connecting piece is arranged at one end of the first connecting shaft, a rubber piston is arranged at one end of the first connecting piece, a reverse osmosis membrane is arranged on one side of the rubber piston, and a second connecting piece is arranged at the other end of the first connecting shaft;

[0012] The gas check assembly includes a fourth sleeve connected to the second joint pipe, one end of the fourth sleeve is connected to the fifth sleeve, one end of the fifth sleeve is provided with a first sealing ring, one side of the first sealing ring is provided with a second end cover, the interior of the second end cover is provided with a second sealing ring, the interior of the fourth sleeve is provided with a gas selection membrane, the interior of the fifth sleeve is provided with a third compression spring, and one side of the third compression spring is provided with a stop piston.

[0013] Furthermore, the axis of the first joint pipe is parallel to the axis of the second joint pipe.

[0014] Furthermore, the axis of the piston rod of the moving assembly and the axis of the connecting rod are located on the same straight line.

[0015] Furthermore, the axis of the first transposition hole is parallel to the axis of the second transposition hole.

[0016] Furthermore, the axis of the moving cylinder is parallel to the axis of the connecting rod, and the axis of the moving cylinder is perpendicular to the axes of the first transposition hole and the second transposition hole respectively.

[0017] Furthermore, the outer diameter of the first sleeve is greater than the outer diameter of the second sleeve, and the outer diameter of the first end cover is greater than the outer diameter of the second sleeve.

[0018] Furthermore, the axis of the first sleeve and the axis of the second sleeve are located on the same straight line, and the second sleeve and the third sleeve are coaxially arranged.

[0019] Furthermore, the axis of the first connecting shaft and the axis of the first connecting member are located on the same straight line, and the first connecting member and the second connecting member are coaxially arranged.

[0020] Furthermore, the fourth sleeve is coaxially arranged with the fifth sleeve, and the axis of the fifth sleeve and the axis of the second end cover are located on the same straight line.

[0021] Furthermore, the outer diameter of the first sealing ring is greater 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 located on the same straight line.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the two-in-one quick connector with liquid extraction and air intake functions provided by the present invention has the following beneficial effects:

[0024] 1. The present invention provides a two-in-one quick connector with the functions of pumping liquid and inletting air. The two-in-one quick connector with the functions of pumping liquid and inletting air comprises a main body, a moving assembly is arranged inside the main body, a first connector pipe and a second connector pipe are respectively arranged on one side of the connector, one end of the first connector pipe is connected to a liquid check assembly, one end of the second connector pipe is connected to a gas check assembly, and an external thread is arranged below the connector; the overall structural design of the two-in-one quick connector with the functions of pumping liquid and inletting air is simple, and it is easy to install and use, and is convenient for pumping liquid and inletting air in a clean barrel for fluid transportation and other aspects.

[0025] 2. The present invention provides a two-in-one quick connector with the functions of pumping liquid and inletting air. The mobile component designed for the two-in-one quick connector with the functions of pumping liquid and inletting air includes a pneumatic system located above the connector. A piston rod is arranged inside the pneumatic system. One end of the piston rod is connected to a connecting rod. The outer ring of the connecting rod is provided with a first compression spring. One end of the connecting rod is connected to a moving cylinder. One side of the moving cylinder is respectively provided with a first transposition hole and a second transposition hole. By starting the pneumatic system above the moving component, the pneumatic system drives the internal piston to perform telescopic movement, thereby driving the connecting rod connected to the piston rod to reciprocate in the vertical direction, thereby causing the moving cylinder connected to one end of the connecting rod to move in the vertical direction. Therefore, according to the use needs, when the first transposition hole moves to be coaxial with the first connector pipe, the connector performs the function of pumping liquid. When the moving cylinder moves to the point where the second transposition hole is coaxial with the second connector pipe, gas is introduced into the clean barrel. The design of the mobile component realizes the automatic operation of pumping liquid and inletting air to the clean barrel, saves manpower and manual operation time, and improves the working efficiency of the connector in pumping liquid.

[0026] 3. The present invention provides a two-in-one quick connector with the functions of pumping liquid and inletting air. The liquid check assembly designed for the two-in-one quick connector with the functions of pumping liquid and inletting air comprises a first sleeve, a second sleeve is arranged on the inner ring of the first sleeve, a first end cover is arranged on the outer ring of the second sleeve, a first connecting shaft is arranged inside the second sleeve, a second compression spring is arranged on the outer ring of the first connecting shaft, a rubber piston is arranged at one end of the first connecting piece, and a reverse osmosis membrane is arranged on one side of the rubber piston; when the connector is pumping liquid, the liquid in the barrel flows upward under the action of air pressure, passes through the first connector pipe and enters the liquid check assembly, and the liquid The body pressure pushes the rubber piston, and the rubber piston compresses the second compression spring on one side. The second compression spring is compressed to one side, so that the rubber piston moves away from the end tightly fitted with the first sleeve, and the liquid passes through the liquid check assembly. After the liquid extraction is completed, the second compression spring restores the elastic force and expands and contracts under the action of its own elastic force, and pushes the rubber piston on one side to the end fitted with the first sleeve, thereby sealing the liquid check assembly to prevent external liquid from flowing back into the ultra-clean barrel. In addition, since a reverse osmosis membrane is arranged in the first joint pipe, during the liquid extraction process, gas is prevented from entering the liquid check assembly, which helps to avoid cross contamination.

[0027] 4. The present invention provides a two-in-one quick connector with the functions of pumping liquid and inletting air. The gas check assembly designed for the two-in-one quick connector with the functions of pumping liquid and inletting air includes a fourth sleeve connected to the second connector pipe, a first sealing ring is arranged at one end of the fifth sleeve, a second end cover is arranged at one side of the first sealing ring, a second sealing ring is arranged inside the second end cover, and a gas selection membrane is arranged inside the fourth sleeve; when the connector is inletting air, the air pressure of the external gas compresses the stop piston in the gas check assembly, the stop piston moves, and the third compression spring on one side is compressed to move to one side, thereby causing the stop piston to The stop piston is compressed and released from the air filter, and the air is then forced to flow in through the air filter, which in turn releases the air from the air filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a first stereoscopic diagram of a two-in-one quick connector with liquid extraction and air intake functions of the present invention;

[0030] Figure 2 A second stereoscopic view of a two-in-one quick connector with liquid extraction and air intake functions according to the present invention;

[0031] Figure 3 A third stereoscopic view of a two-in-one quick connector with liquid extraction and air intake functions according to the present invention;

[0032] Figure 4 A fourth stereoscopic view of a two-in-one quick connector with liquid extraction and air intake functions according to the present invention;

[0033] Figure 5 A cross-sectional view of a two-in-one quick connector with liquid extraction and air intake functions according to the present invention;

[0034] Figure 6 It is a cross-sectional view of a moving component of a two-in-one quick connector with liquid extraction and air intake functions of the present invention;

[0035] Figure 7 It is a cross-sectional view of a liquid check assembly of a two-in-one quick connector with liquid extraction and air intake functions of the present invention;

[0036] Figure 8 The present invention is a cross-sectional view of a gas check assembly of a two-in-one quick connector with liquid extraction and gas intake functions.

[0037] The names of the components corresponding to the reference numerals in the figure are: 1. body; 101. joint; 102. first joint pipe; 103. second joint pipe; 104. external thread; 2. moving assembly; 201. pneumatic system; 202. piston rod; 203. connecting rod; 204. first compression spring; 205. moving cylinder; 206. first transposition hole; 207. second transposition hole; 3. liquid check assembly; 301. first sleeve; 302. second sleeve; 303 , second compression spring; 304, first end cover; 305, first connecting shaft; 306, rubber piston; 307, first connecting piece; 308, third sleeve; 309, reverse osmosis membrane; 310, second connecting piece; 4, gas check assembly; 401, fourth sleeve; 402, fifth sleeve; 403, first sealing ring; 404, second sealing ring; 405, second end cover; 406, third compression spring; 407, stop piston; 408, gas selection membrane. DETAILED DESCRIPTION

[0038] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0040] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an 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 aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0041] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0042] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0043] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0044] See also Figures 1 to 8 The present invention provides a two-in-one quick connector with the functions of pumping liquid and inletting air, comprising a body 1, a moving component 2 is arranged inside the body 1, and a liquid check component 3 and a gas check component 4 are respectively connected to one side of the body 1;

[0045] The body 1 includes a joint 101 located outside the moving assembly 2, a first joint pipe 102 and a second joint pipe 103 are respectively provided on one side of the joint 101, and an external thread 104 is provided below the joint 101;

[0046] The moving assembly 2 includes a pneumatic system 201 located above the joint 101, a piston rod 202 is arranged inside the pneumatic system 201, one end of the piston rod 202 is connected to a connecting rod 203, an outer ring of the connecting rod 203 is provided with a first compression spring 204, one end of the connecting rod 203 is connected to a moving cylinder 205, and one side of the moving cylinder 205 is respectively provided with a first transposition hole 206 and a second transposition hole 207;

[0047] The liquid check assembly 3 includes a first sleeve 301 connected to the first joint pipe 102, a second sleeve 302 is arranged on the inner ring of the first sleeve 301, a third sleeve 308 is arranged inside the second sleeve 302, a first end cover 304 is arranged on the outer ring of the second sleeve 302, a first connecting shaft 305 is arranged inside the second sleeve 302, a second compression spring 303 is arranged on the outer ring of the first connecting shaft 305, a first connecting member 307 is arranged at one end of the first connecting member 305, a rubber piston 306 is arranged at one end of the first connecting member 307, a reverse osmosis membrane 309 is arranged on one side of the rubber piston 306, and a second connecting member 310 is arranged at the other end of the first connecting shaft 305;

[0048] The gas check assembly 4 includes a fourth sleeve 401 connected to the second joint pipe 103, one end of the fourth sleeve 401 is connected to the fifth sleeve 402, one end of the fifth sleeve 402 is provided with a first sealing ring 403, one side of the first sealing ring 403 is provided with a second end cover 405, the interior of the second end cover 405 is provided with a second sealing ring 404, the interior of the fourth sleeve 401 is provided with a gas selection membrane 408, the interior of the fifth sleeve 402 is provided with a third compression spring 406, and one side of the third compression spring 406 is provided with a stop piston 407.

[0049] See also Figures 1 to 6 The axis of the first joint tube 102 is parallel to the axis of the second joint tube 103, 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, the axis of the first transposition hole 206 is parallel to the axis of the second transposition 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 transposition hole 206 and the second transposition hole 207 respectively.

[0050] See also 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 cover 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 located 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 located on the same straight line, and the first connecting member 307 and the second connecting member 310 are coaxially arranged.

[0051] See also Figures 1 to 8 The fourth sleeve 401 is coaxially arranged with the fifth sleeve 402, the axis of the fifth sleeve 402 and the axis of the second end cover 405 are located on the same straight line, the outer diameter of the first sealing ring 403 is greater 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 located on the same straight line.

[0052] The working principle and specific working process of a two-in-one quick connector with liquid extraction and air intake functions are as follows:

[0053] The joint 101 of the two-in-one quick joint with the function of pumping liquid and inletting gas is connected to the clean barrel, the moving assembly 2 is installed inside the joint 101, the first sleeve 301 of the liquid check assembly 3 is connected to the first joint pipe 102, and the fourth sleeve 401 of the gas check assembly 4 is connected to the second joint pipe 103. After the installation is completed;

[0054] Start the pneumatic system 201 above the moving component 2, and the pneumatic system 201 drives the internal piston rod 202 to perform telescopic movement, thereby driving the connecting rod 203 connected to the piston rod 202 to reciprocate in the vertical direction, and then the moving cylinder 205 connected to one end of the connecting rod 203 moves in the vertical direction. Therefore, according to the needs of use, when the first transposition hole 206 moves to be coaxial with the first joint tube 102, the joint 101 performs the liquid extraction function, and when the moving cylinder 205 moves to the second transposition hole 207 is coaxial with the second joint tube 103, gas is introduced into the clean barrel at this time. The design of the moving component 2 realizes the automated operation of extracting liquid and intake air to the clean barrel, saves manpower and manual operation time, and improves the working efficiency of the joint 101 in extracting liquid.

[0055] When the joint 101 is pumping liquid, the liquid in the barrel flows upward under the action of air pressure, passes through the first joint pipe 102 and enters the liquid check assembly 3, and the liquid pressure pushes the rubber piston 306, and the rubber piston 306 compresses the second compression spring 303 on one side. The second compression spring 303 is compressed to one side, so that the rubber piston 306 moves away from the end that is tightly fitted with the first sleeve 301, and the liquid passes through the liquid check assembly 3. After the liquid is pumped, the second compression spring 303 restores its elastic expansion and contraction under the action of its own elastic force, and pushes the rubber piston 306 on one side to the end that is fitted with the first sleeve 301, thereby sealing the liquid check assembly 3 to prevent external liquid from flowing back into the clean barrel. In addition, since a reverse osmosis membrane 309 is provided in the first joint pipe 102, during the liquid pumping process, gas is prevented from entering the liquid check assembly 3, which helps to avoid cross contamination.

[0056] When air is taken in by the joint 101, the air pressure of the external gas compresses the stop piston 407 in the gas check assembly 4, and the stop piston 407 moves, compressing the third compression spring 406 on one side to move to one side, thereby disengaging the stop piston 407 from being limited by the second end cover 405, and the external gas enters the clean barrel. After the air intake is completed, the third compression spring 406 rebounds under the action of its own elastic force, and compresses the stop piston 407 to fit tightly with the end of the second end cover 405, thereby limiting the stop piston 407 in the second end cover 405. Since the first sealing ring 403 and the second sealing ring 404 are provided on one side of the fifth sleeve 402, the gas check assembly 4 can be prevented from leaking gas to the outside. In addition, a gas selection 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, thereby affecting the performance and service life of the gas check assembly 4.

[0057] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

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

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

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

4. A two-in-one quick connector with liquid extraction 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 extraction and air intake functions according to claim 1, characterized in that: 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 transposition hole (206) and the second transposition hole (207).

6. A two-in-one quick connector with liquid extraction 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 cover (304) is greater than the outer diameter of the second sleeve (302).

7. A two-in-one quick connector with liquid extraction 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 located 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 extraction 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 located on the same straight line, and the first connecting member (307) and the second connecting member (310) are coaxially arranged.

9. A two-in-one quick connector with liquid extraction 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 cover (405) are located on the same straight line.

10. A two-in-one quick connector with liquid extraction and air intake functions according to claim 1, characterized in that: The outer diameter of the first sealing ring (403) is greater 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 located on the same straight line.

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