A deflation valve, integrated valve vacuum pump and breast pump

Abstract

The application discloses a deflation valve, an integrated valve type vacuum pump and a breast pump, and relates to the technical field of vacuumizing devices, wherein the deflation valve comprises a shell, a driving motor and a valve body assembly, a gas cavity capable of generating negative pressure is formed in the shell; the driving motor comprises a stator and a driving shaft exposed at both ends of the stator, a first airflow channel is formed in the driving shaft, the first airflow channel penetrates through the driving shaft along the axial direction of the driving shaft, and the first airflow channel is communicated with the gas cavity; the valve body assembly comprises a linkage arm and a sealing piece, the linkage arm is connected with the driving shaft, a second airflow channel is formed in the linkage arm and communicated with the first airflow channel and the outside; the sealing piece is movably arranged in the second airflow channel; the driving motor drives the driving shaft to rotate, drives the linkage arm to rotate, and makes the sealing piece block the communication position between the second airflow channel and the outside. The technical scheme provided by the application can solve the problem that the current vacuum air extraction assembly and the deflation valve limit the size of the breast pump.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vacuum pumping devices, in particular to a deflation valve, an integrated valve type vacuum pump and a breast pump. BACKGROUND

[0002] The existing breast pump mainly uses a vacuum air pumping assembly to extract air, create a negative pressure air cavity and guide milk out of the breast pumping channel. Then, by opening the deflation valve, external air enters the air cavity in the original negative pressure state, restores the air pressure in the air cavity to atmospheric pressure, and at the same time, the milk in the breast pumping channel is discharged to the milk storage cavity at atmospheric pressure.

[0003] In the above breast pumping and milk discharging process, the vacuum air pumping assembly and the deflation valve of the breast pump are core structural components. However, the overall size of the two is relatively large, which limits the structural layout inside the breast pump, resulting in a large size of the breast pump. At the same time, the vacuum air pumping assembly and the deflation valve both need to be driven by electricity, and the size of the battery is limited by the size. The deflation valve is concentrated in the shell of the air pumping assembly, which is not convenient for daily maintenance and maintenance. The current vacuum air pumping assembly and deflation valve limit the size of the breast pump, which is not good for the user experience. SUMMARY

[0004] The main purpose of the present application is to provide a deflation valve, an integrated valve type vacuum pump and a breast pump, which aims to solve the problem that the current vacuum air pumping assembly and deflation valve limit the size of the breast pump, and the deflation valve is concentrated in the shell of the air pumping assembly, which is not convenient for daily maintenance and maintenance.

[0005] To achieve the above purpose, the deflation valve provided by the present application comprises a shell, a driving motor and a valve body assembly, the shell forms an air cavity capable of generating negative pressure inside; the driving motor is connected with the shell, the driving motor is located outside the shell, the driving motor comprises a stator and a driving shaft exposed at both ends of the stator, a first airflow channel is opened in the driving shaft, the first airflow channel penetrates the driving shaft along the axial direction of the driving shaft, and the first airflow channel communicates with the air cavity; the valve body assembly comprises a linkage arm and a sealing element, the linkage arm is connected with the driving shaft, a second airflow channel communicating with the first airflow channel and the outside is opened in the linkage arm; the sealing element is movably arranged in the second airflow channel; the driving motor drives the driving shaft to rotate, drives the linkage arm to rotate, so that the sealing element blocks the communication between the second airflow channel and the outside.

[0006] In an embodiment, the valve body assembly further comprises a stopper, the stopper is connected with the linkage arm, the stopper is provided with a deflation hole communicating with the second airflow channel and the outside, and the stopper is located at one end of the linkage arm away from the driving shaft.

[0007] In an embodiment, the stopper is formed with a stop surface near one end of the sealing member, the stop surface is located at the periphery of the air vent, and the sealing member is formed with a sealing surface matched with the stop surface near one end of the stopper.

[0008] In an embodiment, the stop surface is a circular arc surface, the sealing member is a spherical body, the radius of the spherical body is smaller than the radius of the circular arc surface, and the radius of the spherical body is greater than the radius of the air vent.

[0009] In an embodiment, the valve body assembly comprises a plurality of the sealing members and a plurality of the stoppers, and the linkage arm is provided with a plurality of the second air flow channels in communication with each other, each of the sealing members is movably arranged in one of the second air flow channels, and each of the stoppers is connected with the linkage arm and located at one end of one of the second air flow channels away from the drive shaft.

[0010] In an embodiment, each of the stoppers is connected with the adjacent stopper.

[0011] In an embodiment, each of the sealing members is a magnetic member, and the sealing members are magnetically connected.

[0012] In an embodiment, the valve body assembly further comprises a reset elastic member, the reset elastic member is elastically connected with the sealing member and the linkage arm, and the reset elastic member is located at one end of the linkage arm near the drive shaft.

[0013] In an embodiment, the inner wall of the second air flow channel is provided with a limiting table, and the limiting table is located at one end of the linkage arm near the drive shaft.

[0014] The application further provides an integrated valve type vacuum pump, which comprises an air pumping assembly, a rotating shaft and an air vent valve, the rotating shaft is located in the air cavity, the shell is provided with a connecting channel in communication with a breast pump, the driving motor can drive the rotating shaft to rotate and drive the air pumping assembly through the rotating shaft to form a negative pressure space in the air cavity, the two ends of the drive shaft are connected with the rotating shaft and the linkage arm respectively, and the air cavity is in communication with the second air flow channel, the first air flow channel and the outside in sequence.

[0015] The application further provides a breast pump, which comprises a suction cup in communication with the air cavity and an integrated valve type vacuum pump, and a milk storage container for storing the milk pumped by the suction cup.

[0016] The technical scheme of the present application designs a deflation valve, which comprises a driving motor, a linkage arm and a sealing element, a negative pressure air cavity is formed in the shell, the driving motor is connected with the shell, the driving motor is located outside the shell, and the driving motor comprises a stator and a driving shaft with two ends of the stator exposed. A first airflow channel is formed in the driving shaft, and the first airflow channel penetrates the axial direction of the driving shaft and is connected with the air cavity. The valve body assembly is composed of the linkage arm and the sealing element, the linkage arm is connected with the driving shaft, and a second airflow channel is formed in the linkage arm, the second airflow channel is connected with the first airflow channel and the outside. The sealing element moves in the second airflow channel, when the driving motor drives the driving shaft to rotate, the linkage arm rotates, and the sealing element blocks the connection between the second airflow channel and the outside, so as to realize the closing and opening functions of the deflation valve. By forming the first airflow channel in the driving shaft, the complex pipeline structure is reduced, thereby reducing the size of the whole breast pump, and facilitating carrying and use. Since the valve body assembly is located outside the shell, when maintenance is performed, the whole shell does not need to be disassembled, only the valve body assembly needs to be operated, so that the maintenance process is greatly simplified, and the maintenance cost is reduced. The driving motor directly drives the linkage arm and the sealing element, so that the intermediate transmission link is reduced, the response speed and operation efficiency of the deflation valve are improved. By integrating the valve body assembly, the deflation function and the driving motor are integrated together, so that the structure of the whole breast pump is more compact, and the space utilization rate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0018] Figure 1 The structure schematic diagram of an embodiment of the deflation valve provided by the present application is shown in the figure.

[0019] Figure 2 The structure schematic diagram of an embodiment of the linkage arm provided by the present application is shown in the figure.

[0020] Figure 3 The structure schematic diagram of another embodiment of the linkage arm provided by the present application is shown in the figure.

[0021] Figure 4 The structure schematic diagram of another embodiment of the linkage arm provided by the present application is shown in the figure.

[0022] Figure 5 The structure schematic diagram of an embodiment of the integrated valve type vacuum pump provided by the present application is shown in the figure.

[0023] Figure 6A structural schematic diagram of another embodiment of the integrated valve vacuum pump provided by the present application.

[0024] Explanation of reference numerals:

[0025] 100, air release valve; 1, driving motor; 11, driving shaft; 1a, first air flow passage; 2, linkage arm; 2a, second air flow passage; 3, sealing member; 21, stop member; 21a, air release hole; 211, stop surface; 31, sealing surface; 22, reset elastic member; 23, limiting table; 32, magnetic member; 200, integrated valve vacuum pump; 4, air extraction assembly; 5, shell; 6, rotating shaft; 5a, air cavity; 5b, connecting passage; 6a, third air flow passage.

[0026] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0028] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0029] In addition, if the embodiments of the present application involve descriptions of “first”, “second” and the like, the descriptions of “first”, “second” and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, “and / or” or “and / or” appearing throughout the text means that the three parallel solutions are included, for example, “A and / or B” includes A solution, or B solution, or A and B solutions are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0030] The present application provides an air release valve 100.

[0031] Please refer toFigures 1 to 5 In an embodiment of the present application, the air release valve 100 comprises a housing 5, a driving motor 1 and a valve body assembly. The housing 5 is provided with an air cavity 5a capable of generating negative pressure. The driving motor 1 is connected to the housing 5 and located outside the housing 5. The driving motor 1 comprises a stator and a driving shaft 11 exposed at both ends of the stator. The driving shaft 11 is provided with a first air flow channel 1a penetrating the driving shaft 11 along the axial direction of the driving shaft 11, and the first air flow channel 1a is connected to the air cavity 5a. The valve body assembly comprises a linkage arm 2 and a sealing member 3. The linkage arm 2 is connected to the driving shaft 11, and the linkage arm 2 is provided with a second air flow channel 2a connected to the first air flow channel 1a and the outside. The sealing member 3 is movably arranged in the second air flow channel 2a. The driving motor 1 drives the driving shaft 11 to rotate, thereby driving the linkage arm 2 to rotate, so as to block the connection between the second air flow channel 2a and the outside.

[0032] In the embodiment, the air release valve 100 comprises an air cavity 5a capable of generating negative pressure in the housing 5. The air cavity 5a realizes the negative pressure environment through specific structural design, so as to facilitate the operation of the breast pump. The driving motor 1 is connected to the housing 5 and located outside the housing 5, which is conducive to driving the air release valve 100 and the exhaust device by using the driving motor 1. The driving motor 1 comprises a stator and a driving shaft 11 exposed at both ends of the stator. The driving shaft 11 is provided with a first air flow channel 1a penetrating the driving shaft 11 along the axial direction of the driving shaft 11, thereby realizing the connection between the air cavity 5a and the outside. Specifically, the air cavity 5a is provided with a sealed cavity in the housing 5, and an air pump is arranged on one side of the cavity. The negative pressure is generated by the operation of the air pump. Alternatively, the air cavity 5a is provided with a cavity with a breathable membrane in the housing 5. The breathable membrane allows air to flow in one direction. When the air pump is working, the air pressure on one side of the breathable membrane is reduced, thereby forming negative pressure. The first air flow channel 1a makes the connection between the air cavity 5a and the outside more direct, thereby improving the efficiency of negative pressure generation and air release, and thus improving the working performance of the breast pump. Since the driving motor 1 is located outside the housing 5, when the motor needs to be repaired or replaced, the operation is more convenient, and the entire breast pump does not need to be disassembled, thereby saving maintenance time and cost.

[0033] In an embodiment, the valve body assembly design includes a linkage arm 2 and a sealing element 3. The linkage arm 2 is connected to the drive shaft 11 by bolts or injection molding, etc., and has a second air flow channel 2a inside, which communicates the first air flow channel 1a with the outside world and allows air to flow freely. The sealing element 3 moves in the second air flow channel 2a and can block or open the channel as needed. Specifically, the linkage arm 2 is designed as a straight rod, one end of which is fixedly connected to the drive shaft 11, and the other end is provided with a sliding groove, in which the sealing element 3 slides to control the opening and closing of the second air flow channel 2a. Alternatively, the linkage arm 2 is designed as an L-shaped structure, one arm of which is connected to the drive shaft 11, and the other arm extends to the opening of the second air flow channel 2a. The sealing element 3 is a freely rolling spherical structure that controls the opening and closing of the channel by rolling. By driving the rotation of the linkage arm 2 and the sealing element 3 by the drive motor 1, the second air flow channel 2a can be accurately controlled, thereby accurately adjusting the negative pressure and the air release process, improving the efficiency and performance of the breast pump. The design of the linkage arm 2 and the sealing element 3 allows for quick disassembly and replacement, making maintenance and repair more convenient and reducing maintenance costs. The movable design of the sealing element 3 reduces wear and tear, improves the durability and service life of the components, and reduces the failure rate caused by damage to the sealing element 3.

[0034] The technical scheme of the present application designs a deflation valve 100, which comprises a drive motor 1, a linkage arm 2 and a sealing element 3, and a negative pressure air cavity 5a is formed in the housing 5. The drive motor 1 is connected to the housing 5 and located outside the housing 5, and the drive motor 1 comprises a stator and a drive shaft 11 with both ends of the stator exposed. A first air flow channel 1a is formed in the drive shaft 11, which penetrates the axial direction of the drive shaft 11 and communicates with the air cavity 5a. The valve body assembly is composed of the linkage arm 2 and the sealing element 3. The linkage arm 2 is connected to the drive shaft 11 and has a second air flow channel 2a inside, which communicates the first air flow channel 1a with the outside world. The sealing element 3 moves in the second air flow channel 2a. When the drive motor 1 drives the drive shaft 11 to rotate, the linkage arm 2 rotates with it, driving the sealing element 3 to block the communication between the second air flow channel 2a and the outside world, realizing the functions of closing and opening the deflation valve 100. By forming the first air flow channel 1a in the drive shaft 11, the complex pipeline structure is reduced, thereby reducing the size of the entire breast pump, facilitating carrying and use. Since the valve body assembly is located outside the housing 5, it is not necessary to disassemble the entire housing 5 during maintenance and repair, but only the valve body assembly needs to be operated, greatly simplifying the maintenance process and reducing maintenance costs. The drive motor 1 directly drives the linkage arm 2 and the sealing element 3, reducing the intermediate transmission link and improving the response speed and operation efficiency of the deflation valve 100. By integrating the valve body assembly, the deflation function is integrated with the drive motor 1, making the structure of the entire breast pump more compact and improving the space utilization.

[0035] In one embodiment of the present application, please refer to Figure 1 and Figure 2 , the valve body assembly further comprises a stopper 21 connected with the linkage arm 2, the stopper 21 is provided with a gas release hole 21a communicating the second gas flow channel 2a with the outside, and the stopper 21 is located at the end of the linkage arm 2 away from the drive shaft 11.

[0036] In this embodiment, the stopper 21 is connected with the linkage arm 2 through threads or clamping grooves, and the stopper 21 is provided with a gas release hole 21a communicating the second gas flow channel 2a with the outside. The stopper 21 is located at the end of the linkage arm 2 away from the drive shaft 11. Specifically, the stopper 21 is designed as an independent component, and the gas release hole 21a is circular and directly penetrates the stopper 21 to achieve rapid release of gas flow, optimize the structure of the valve body assembly, and improve the working efficiency of the breast pump. When selecting the material of the stopper 21, the noise reduction performance is considered, and the stopper 21 is generally made of rubber or polyurethane material. Rubber material has good shock absorption and buffering performance, which can effectively absorb impact force and reduce noise. In particular, low-elasticity rubber can reduce the impact sound when the stopper 21 contacts other components, thereby improving the noise reduction effect. Polyurethane material also has good buffering and damping characteristics, which can effectively reduce the noise generated when impacting. In addition, the polyurethane-coated bolts can play a buffering role when the workpiece is impacted, further reducing noise and damage to the workpiece. The stopper 21 makes the air release operation more convenient, without the need for complex operations to control the gas flow, thereby improving the convenience of use. Since the connection mode of the stopper 21 and the linkage arm 2 is simple, it is easy to disassemble and maintain, thereby reducing maintenance cost and time. The design of the gas release hole 21a helps to improve the sealing performance of the entire valve body assembly, preventing air leakage in the non-air release state, and ensuring the milk suction effect of the breast pump.

[0037] In one embodiment of the present application, please refer to Figure 3 , the stopper 21 is formed with a stop surface 211 near the end close to the sealing member 3, the stop surface 211 is located at the periphery of the gas release hole 21a, and the sealing member 3 is formed with a sealing surface 31 matched with the stop surface 211 near the end close to the stopper 21.

[0038] In one embodiment, the stopper 21 is designed with a stop surface 211 near one end of the seal 3, which is located at the periphery of the vent hole 21a to ensure the tight fit between the seal 3 and the stopper 21. The seal 3 is formed with a sealing surface 31 at the end near the stopper 21, which cooperates with the stop surface 211. Specifically, the stop surface 211 is designed as a flat surface, which directly contacts the flat sealing surface 31 of the seal 3, suitable for low pressure and not extremely high sealing requirements. Alternatively, the stop surface 211 is designed as a surface with a groove, which cooperates with the corresponding convex sealing surface 31 of the seal 3, suitable for high pressure and stronger sealing performance. Through the precise cooperation of the stop surface 211 and the sealing surface 31, the leakage of gas or liquid can be effectively prevented, and the sealing performance of the entire system can be improved. The cooperation design of the stopper 21 and the seal 3 reduces wear and tear, improves the durability and service life of the components, and reduces the failure rate caused by damage to the seal 3. By designing different shapes of the stop surface 211 and the sealing surface 31, different working pressures and environmental conditions can be adapted, making the application of the stopper 21 and the seal 3 more widely. Due to the simple cooperation design of the stopper 21 and the seal 3, it is easy to disassemble and maintain, which reduces the maintenance cost and time. The design of the stopper 21 helps to maintain the stability of the sealing system under vibration or impact, preventing equipment failure caused by sealing failure.

[0039] In one embodiment of the present application, please refer to Figure 3 and Figure 4 , the stop surface 211 is a circular arc surface, and the seal 3 is a spherical body, the radius of the spherical body is smaller than the radius of the circular arc surface, and the radius of the spherical body is greater than the radius of the vent hole 21a.

[0040] In this embodiment, the stop surface 211 of the stop piece 21 is designed as a circular arc surface, which cooperates with the spherical shape of the sealing piece 3 to form a dynamic sealing structure. The radius of the spherical body is smaller than the radius of the circular arc surface, and the radius of the spherical body is larger than the radius of the air leakage hole 21a, ensuring that the sealing piece 3 can move freely in the channel without jamming, while sealing the air leakage hole 21a. Specifically, the stop surface 211 is a semicircular arc surface, and the sealing piece 3 is a spherical body. This design allows the sealing piece 3 to form stable sealing contact with the stop surface 211 when moving in the second air flow channel 2a, and is suitable for occasions that need to be frequently opened and closed. The stop surface 211 is a quarter circular arc surface, and the sealing piece 3 is a quarter spherical body. This design allows the sealing piece 3 to move within a certain angle range, and is suitable for occasions that require precise control of air flow. The cooperation of the circular arc surface and the spherical body provides a dynamic sealing mechanism that can maintain effective sealing when the sealing piece 3 moves, reducing gas leakage. Since the diameter of the sealing piece 3 is smaller than the diameter of the second air flow channel 2a, the sealing piece 3 can move freely in the channel, providing better flexibility and adaptability for different working pressures and environments. The cooperation of the circular arc surface and the spherical body reduces the friction and wear between the sealing piece 3 and the stop piece 21, prolonging the service life of the components. Since the sealing piece 3 can move freely in the second air flow channel 2a, this design can quickly respond to changes in air flow, improving the response speed and efficiency of the entire system.

[0041] In one embodiment of the present application, please refer to Figure 3 and Figure 4 , the valve body assembly includes a plurality of sealing pieces 3 and a plurality of stop pieces 21, and the linkage arm 2 is provided with a plurality of second air flow channels 2a that are in communication with each other. Each sealing piece 3 is movably arranged in a second air flow channel 2a, and each stop piece 21 is connected to the linkage arm 2 and located at one end of a second air flow channel 2a away from the drive shaft 11.

[0042] In an embodiment, the valve body assembly includes a plurality of sealing members 3 and a plurality of stop members 21, and a plurality of second gas flow channels 2a are provided in the linkage arm 2 and are in communication with each other. Each sealing member 3 is movably arranged in a corresponding second gas flow channel 2a, and each stop member 21 is connected to the linkage arm 2 and located at the end of the second gas flow channel 2a away from the drive shaft 11. Specifically, a plurality of spherical sealing members 3 are used, each sealing member 3 is arranged in a corresponding second gas flow channel 2a, and the stop member 21 is designed as a baffle with an arc surface that cooperates with the arc surface of the spherical sealing member 3 and is located at the distal end of the second gas flow channel 2a. The sealing member 3 can effectively seal the air vent 21a under the action of centrifugal force. By providing independent sealing members 3 and stop members 21 in each second gas flow channel 2a, the sealing performance of each channel can be ensured, gas leakage can be prevented, and the sealing efficiency of the entire system can be improved. The plurality of sealing members 3 and the plurality of stop members 21 are conducive to the stability of the overall structure and improve the efficiency of the sealing and venting process. Independent sealing and stopping design can reduce system failures caused by wear or damage of the sealing member 3, and enhance the stability and reliability of the system.

[0043] In an embodiment of the present application, please refer to Figure 4 Each stop member 21 is connected to an adjacent stop member 21.

[0044] In this embodiment, the connection between each stop member 21 and an adjacent stop member 21 can be achieved by bolting or injection molding. By bolting or injection molding to connect the stop members 21, the structural stability of the entire valve body assembly can be improved, and the reliability in high pressure or vibration environment can be ensured. The bolting method is convenient for later maintenance and replacement, because bolting allows quick disassembly and reassembly of the stop members 21, reducing maintenance time and cost. The injection molding connection method is suitable for various working environments, especially in situations where space is limited or bolting cannot be used, injection molding provides a robust connection solution. The close connection between the stop members 21 helps to improve the sealing performance of the entire valve body assembly, prevent gas leakage, and improve the working effect of the breast pump. Whether it is bolting or injection molding connection, the durability of the stop members 21 can be enhanced, the failure caused by unstable connection can be reduced, and the service life of the product can be prolonged.

[0045] In an embodiment of the present application, please refer to Figure 3 Each sealing member 3 is a magnetic member 32, and each sealing member 3 is magnetically connected.

[0046] In an embodiment, each seal 3 is a magnetic member 32, and the magnetic members 32 are magnetically connected. Specifically, each seal 3 is a magnetic sphere, and the magnetic spheres are magnetically attracted to each other and connected to form a magnetic seal barrier. The magnetic spheres can freely roll in the second airflow passage 2a, but always remain sealed due to the magnetic effect. The magnetic seal 3 can achieve the effect of quickly separating the seal 3 from the air leakage hole 21a due to its unique magnetic connection mode, which is particularly important for improving the response speed of the device. Since there is no physical contact between the magnetic seals 3, there is no wear, thereby greatly prolonging the service life of the seal 3. Since the magnetic seal 3 has little physical contact, the friction is very small, which is suitable for high-speed rotating applications and reduces energy loss.

[0047] In an embodiment of the present application, referring to Figure 6 , the valve body assembly further comprises a reset elastic member 22, which is elastically connected to the seal 3 and the linkage arm 2, and is located at one end of the linkage arm 2 close to the drive shaft 11.

[0048] In this embodiment, the reset elastic member 22 in the valve body assembly is elastically connected to the seal 3 and the linkage arm 2, and is located at one end of the linkage arm 2 close to the drive shaft 11. Specifically, the reset elastic member 22 can be designed as a spring, one end of which is connected to the seal 3 and the other end of which is connected to the linkage arm 2. When the linkage arm 2 moves under the action of the drive shaft 11, the spring provides the necessary elastic force to reset the seal 3 and maintain the open state of the air leakage valve 100. This spring type reset elastic member 22 is simple in design, easy to install and maintain. The reset elastic member 22 can also be designed as a rubber elastic element, which uses the elastic deformation characteristics of rubber to achieve the reset function. One end of the rubber elastic element is fixed to the seal 3, and the other end is fixed to the linkage arm 2. When the linkage arm 2 moves, the rubber elastic element deforms, and when the deformation is released, it pushes the seal 3 to reset. This design can provide stable reset force while reducing noise and vibration. The use of the reset elastic member 22 ensures the accurate resetting of the seal 3 during the dynamic process, improving the reliability of the reset of the seal 3. Since the reset elastic member 22 is simple in design and easy to maintain, it can reduce the maintenance cost and replacement frequency during long-term operation. The addition of the reset elastic member 22 enhances the durability of the entire valve body assembly, prolonging the service life, especially in frequently opened and closed applications. The use of elastic materials such as rubber can effectively absorb vibration and reduce noise, improving the working environment.

[0049] In an embodiment of the present application, referring to Figure 3 , the inner wall of the second airflow passage 2a is provided with a limiting table 23, which is located at one end of the linkage arm 2 close to the drive shaft 11.

[0050] In an embodiment, the inner wall of the second airflow channel 2a is provided with a limiting platform 23, which is located at one end of the linkage arm 2 close to the driving shaft 11. Specifically, the limiting platform 23 can be designed as a protruding cylindrical or hemispherical structure, which is directly formed on the inner wall of the second airflow channel 2a. This design is simple and easy to process, and is suitable for occasions where it is necessary to fix the position to limit the movement of the linkage arm 2. The limiting platform 23 can also be designed as a groove on the inner wall, which matches the protruding part on the linkage arm 2 to realize the positioning of the linkage arm 2 in the airflow channel. This design is suitable for complex structures that need to limit the movement of the linkage arm 2 in a specific path. The design of the limiting platform 23 can ensure the accurate positioning of the linkage arm 2 in the second airflow channel 2a, preventing the sealing effect of the sealing member 3 from being affected by the improper movement of the linkage arm 2. The use of the limiting platform 23 improves the stability of the linkage arm 2 in the airflow channel, reducing the displacement of the linkage arm 2 caused by vibration or impact, thereby improving the working stability of the entire valve body assembly. The design of the limiting platform 23 reduces the direct friction between the linkage arm 2 and the inner wall of the airflow channel, thereby prolonging the service life of the linkage arm 2 and the airflow channel.

[0051] The present application also provides an integrated valve vacuum pump 200, please refer to Figure 5 and Figure 6 The integrated valve vacuum pump 200 includes a suction assembly 4, a housing 5, a rotating shaft 6, and a gas leakage valve 100. The specific structure of the gas leakage valve 100 is described in the above embodiments. Since the integrated valve vacuum pump 200 adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the rotating shaft 6 is located in the air cavity 5a, the housing 5 is provided with a connecting channel 5b communicating with the breast pump, the driving motor 1 can drive the rotating shaft 6 to rotate and drive the suction assembly 4 through the rotating shaft 6 to form a negative pressure space in the air cavity 5a, the two ends of the driving shaft 11 are connected with the rotating shaft 6 and the linkage arm 2 respectively, and the air cavity 5a is sequentially communicated with the second airflow channel 2a, the first airflow channel 1a and the outside.

[0052] In the embodiment, the integrated valve vacuum pump 200 combines all the technical solutions in the above embodiments, and specifically includes the air extraction assembly 4, the shell 5, the rotating shaft 6, and the air release valve 100. The shell 5 is formed with an air cavity 5a, the rotating shaft 6 is located in the air cavity 5a, and the shell 5 is provided with a connecting channel 5b in communication with the breast pump. The driving motor 1 can drive the rotating shaft 6 to rotate and drive the air extraction assembly 4 to form a negative pressure space in the air cavity 5a through the rotating shaft 6. The driving shaft 11 is connected with the rotating shaft 6 and the linkage arm 2 at two ends, respectively, and the air cavity 5a is in communication with the second air flow channel 2a, the first air flow channel 1a and the outside in sequence. Specifically, the shell 5 is made of aluminum alloy or plastic material, the air cavity 5a is formed by precision machining, the rotating shaft 6 is made of stainless steel and the surface is specially treated to reduce friction and improve corrosion resistance. The driving motor 1 is a brushless motor to improve efficiency and service life. The linkage arm 2 and the sealing element 3 of the air release valve 100 are made of high-strength plastic to ensure durability and cost-effectiveness. The design of the integrated valve vacuum pump 200 integrates the air extraction assembly 4, the air release valve 100 and other key components in one shell 5, improves the overall integration, reduces the number of external connections and components, and simplifies the system design. Due to the integrated design, the space occupation is reduced, the volume of the vacuum pump is smaller, the weight is lighter, and the vacuum pump is convenient to carry and use. The driving motor 1 directly drives the rotating shaft 6 and the linkage arm 2, reduces the transmission link, improves the response speed and control accuracy. The integrated design makes it more convenient to maintain and replace parts, especially the air release valve 100 part, which can be quickly disassembled and replaced, reducing maintenance costs.

[0053] The application further provides a breast pump, which comprises a suction cup in communication with the integrated valve vacuum pump 200 and the air cavity 5a, and a milk storage container for storing milk sucked by the suction cup.

[0054] In an embodiment, the breast pump core components include an integrated valve vacuum pump 200, a suction cup in communication with the air cavity 5a, and a milk storage container for storing the milk extracted by the suction cup. The integrated valve vacuum pump 200 is designed according to the previous embodiments, with a suction assembly 4, a housing 5, a rotating shaft 6, a vent valve 100, and the like. The suction cup is designed to fit closely with the breast to achieve effective milk extraction. The milk storage container is designed to collect and store the milk extracted from the breast. The design of the integrated valve vacuum pump 200 provides stable and adjustable negative pressure, enabling the breast pump to effectively extract milk from the breast. The soft material and adjustable design of the suction cup improve the user's comfort and reduce discomfort during use. The leak-proof design and easy-to-clean features of the milk storage container make milk storage and subsequent processing more convenient. The food-grade plastic milk storage container ensures the safety of the milk, which is suitable for infants to eat. The detachable design of the milk storage container allows users to easily replace the container, reducing the maintenance cost over a long period of use. The direct communication design of the integrated valve vacuum pump 200 and the suction cup simplifies the structure of the breast pump, reduces the number of components, and improves the overall stability and reliability.

[0055] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A vent valve, characterized in that, include: The housing (5) has an air chamber (5a) formed inside it, which is capable of generating negative pressure; A drive motor (1) is connected to the housing (5) and is located outside the housing (5). The drive motor (1) includes a stator and a drive shaft (11) exposed at both ends of the stator. A first airflow channel (1a) is provided inside the drive shaft (11). The first airflow channel (1a) passes through the drive shaft (11) along its axial direction and communicates with the air chamber. The valve body assembly includes a linkage arm (2) and a seal (3). The linkage arm (2) is connected to the drive shaft (11) and is located on the side of the drive shaft (11) away from the air chamber. A second airflow channel (2a) is provided in the linkage arm (2) to connect the first airflow channel (1a) with the outside. The seal (3) is movably disposed in the second airflow channel (2a). The drive motor (1) drives the drive shaft (11) to rotate, which in turn drives the linkage arm (2) to rotate, so that the seal (3) blocks the connection between the second airflow channel (2a) and the outside world; The valve body assembly also includes a stop (21), which is connected to the linkage arm (2). The stop (21) has a vent (21a) that connects the second airflow channel (2a) to the outside. The stop (21) is located at the end of the linkage arm (2) away from the drive shaft (11). The valve body assembly includes a plurality of the seals (3) and a plurality of the stops (21). The linkage arm (2) is provided with a plurality of interconnected second airflow channels (2a). Each seal (3) is movably disposed in a second airflow channel (2a). Each stop (21) is connected to the linkage arm (2) and is located at one end of a second airflow channel (2a) away from the drive shaft (11).

2. The vent valve as described in claim 1, characterized in that, The stop member (21) has a stop surface (211) at one end near the seal member (3), the stop surface (211) is located at the periphery of the vent hole (21a), and the seal member (3) has a sealing surface (31) at one end near the stop member (21) that mates with the stop surface (211).

3. The vent valve as described in claim 2, characterized in that, The stop surface (211) is an arc surface, the seal (3) is a sphere, the radius of the sphere is smaller than the radius of the arc surface, and the radius of the sphere is larger than the radius of the vent hole.

4. The vent valve as described in claim 1, characterized in that, Each of the stops (21) is connected to the adjacent stop (21).

5. The vent valve as described in claim 1, characterized in that, Each of the seals (3) is a magnetic element (32), and the seals (3) are magnetically connected.

6. The vent valve as described in any one of claims 1 to 3, characterized in that, The valve body assembly also includes a reset elastic element (22), which is elastically connected to the seal (3) and the linkage arm (2). The reset elastic element (22) is located at one end of the linkage arm (2) near the drive shaft (11).

7. The vent valve as described in any one of claims 1 to 3, characterized in that, The inner wall of the second airflow channel (2a) is provided with a limiting platform (23), which is located at one end of the linkage arm (2) near the drive shaft (11).

8. An integrated valve-type vacuum pump, characterized in that, The integrated valve vacuum pump includes a suction assembly (4), a rotating shaft (6), and a vent valve as described in any one of claims 1 to 5; the rotating shaft (6) is located in the air chamber (5a), the housing (5) has a connecting channel (5b) communicating with the breast pump, the drive motor (1) can drive the rotating shaft (6) to rotate and drive the suction assembly (4) through the rotating shaft (6) to form a negative pressure space in the air chamber (5a), the two ends of the drive shaft (11) are respectively connected to the rotating shaft (6) and the linkage arm (2), and the air chamber (5a) is sequentially connected to the first airflow channel (1a), the second airflow channel (2a), and the outside.

9. A breast pump, characterized in that, Including the integrated valve vacuum pump as described in claim 8; A suction cup communicating with the air cavity (5a); and A milk storage container for storing milk sucked out by the suction cup.

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