Air escape valve and breast pump
By employing an opening and closing structure and a flexible connection and gap space design for the sealing component in the vent valve, the noise and vibration problems during operation are solved, resulting in a quieter operating environment.
Patent Information
- Application Number
- CN202520273721.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Existing vent valves are prone to generating noise and vibration during operation, affecting environmental comfort and interfering with operators.
A vent valve was designed that, through the cooperation of the opening and closing structure and the sealing component, utilizes the elastic connection and gap space of the sealing component to control the gas flow, avoid the impact between the opening and closing structure and the inner wall of the air intake channel, and reduce noise and vibration.
It effectively reduces noise and vibration during the venting process, improves environmental comfort, and reduces interference with operators.
Smart Images
Figure CN223682922U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a deflation valve technical field, especially a kind of deflation valve and breast pump. BACKGROUND
[0002] Deflation valve, also known as exhaust valve or safety valve, is a kind of device for controlling pressure, it is installed in closed system to prevent pressure from exceeding safety limit.Deflation valve main function is opened automatically when system pressure exceeds preset value, releases pressure, to protect equipment and personnel safety.
[0003] In related art, deflation valve adopts electromagnetic drive, usually including an electromagnetic coil and an active armature connected with coil, when coil is energized, the magnetic field generated attracts active armature to move, to open or close valve, pass through the on-off of current to control the opening and closing of valve quickly and accurately;But when active armature moves quickly to respond to the change of electromagnetic field, active armature and other components of valve body contact easily produce impact noise and vibration, the comfort of surrounding environment is influenced, and possibly cause disturbance to the operator of equipment. SUMMARY
[0004] The main purpose of the utility model is to propose a kind of deflation valve and breast pump, to reduce the noise when deflation valve operates.
[0005] To achieve the above object, the deflation valve provided by the utility model comprises:
[0006] Valve body, the valve body includes shell and opening and closing structure, the shell is opened with mutually communicating gas inlet channel, gas outlet channel and activity channel, the opening and closing structure is movably arranged in the activity channel, and the communication of the gas inlet channel and the gas outlet channel is blocked;
[0007] Plugging piece, the plugging piece is movably arranged in the gas inlet channel, and the first gap space communicating the gas outlet channel is formed between the inner peripheral wall of the gas inlet channel;The plugging piece is provided with the first air inlet of the gas inlet end of the gas inlet channel, the opening and closing structure blocks the communication of the gas outlet end of the first air inlet and the activity channel, and the plugging piece is elastically connected with the gas outlet end of the gas inlet channel and closes the gas inlet end of the gas inlet channel;
[0008] Among them, the deflation valve has the opening and closing structure moves away from the plugging piece, and the gas inlet channel and the gas outlet channel are communicated;
[0009] In the deflation state, the second gap space communicating the first gap space and the first air inlet is formed between the plugging piece and the gas inlet end of the gas inlet channel, and the first air inlet is communicated with the activity channel.
[0010] In an embodiment, the air outlet end of the air inlet channel is formed with a first connecting section, the sealing member movably sleeved on the first connecting section and elastically connected with the first connecting section, and the first connecting section is provided with a second air inlet opening communicated with the first air inlet opening and the movable channel.
[0011] In an embodiment, the first connecting section is provided with a containing groove, the bottom wall of the containing groove is provided with the second air inlet opening, the valve body comprises a first elastic member, the first elastic member is contained in the containing groove and located between the bottom wall of the containing groove and the sealing member.
[0012] In an embodiment, the sealing member has a second connecting section movably sleeved on the first connecting section and a sealing section arranged close to the air inlet end of the air inlet channel, and the cross-sectional area of the sealing section gradually increases from close to the air inlet end of the air inlet channel to away from the air inlet end of the air inlet channel.
[0013] In an embodiment, the valve body further comprises an end cover connected with the inner peripheral wall of the air inlet channel, the end cover is provided with a third air inlet opening at an end away from the shell, and the sealing member can abut against the end cover to close the third air inlet opening.
[0014] In an embodiment, the air release valve comprises a sound-absorbing sheet arranged at the air inlet end of the air inlet channel.
[0015] In an embodiment, the opening and closing structure comprises a magnetic sensing coil, a magnetic rod member and a sealing sleeve, the magnetic rod member is contained in the movable channel and elastically connected with the movable channel, the sealing sleeve is arranged at one end of the magnetic rod member close to the sealing member, and the magnetic sensing coil is sleeved on the outer peripheral wall of the movable channel.
[0016] In an embodiment, the air release valve comprises a mounting frame connected with the shell, the mounting frame is provided with a mounting cavity, and the magnetic sensing coil and part of the structure of the shell are contained in the mounting cavity.
[0017] In an embodiment, the bottom wall of the mounting cavity is formed with a convex column, the opening and closing structure comprises a second elastic member, the convex column extends into the movable channel, and the second elastic member is sleeved on the magnetic rod member and located between the magnetic rod member and the convex column.
[0018] The utility model further provides a breast pump, which comprises:
[0019] The suction pump has an air cavity for generating negative pressure.
[0020] The air outlet channel is communicated with the air cavity of the air pump in any of the above embodiments.
[0021] A suction cup communicated with the air cavity; and
[0022] A milk storage container for storing the milk sucked by the suction cup.
[0023] In the technical scheme of the utility model, when air release is needed, the opening and closing structure moves away from the plugging piece, at this time, the gas in the external environment enters the air outlet channel through the first air inlet and the movable channel of the plugging piece in turn, realizing the communication between the air inlet channel and the air outlet channel; at the moment when the gas in the external environment enters the air outlet channel, because the air outlet channel is in a negative pressure state, while the gas in the external environment is standard atmospheric pressure, the standard atmospheric pressure moves to the air outlet channel to overcome the elastic force of the plugging piece and push the plugging piece to move close to the opening and closing structure, at this time, the gas in the external environment enters the air outlet channel through the first gap space, the second gap space and the first air inlet, so as to rapidly supplement the pressure in the air outlet channel and increase the pressure relief area; when the pressure difference between the air pressure in the air outlet channel and the air pressure in the external environment gradually decreases, the plugging piece moves away from the opening and closing structure under the action of the elastic restoring force until the plugging piece closes the air inlet end of the air inlet channel; during the air release process, because the plugging piece is elastically connected with the air outlet end of the air inlet channel, the noise and vibration caused by the opening and closing structure impacting the inner circumferential wall of the air inlet channel when the pressure in the air outlet channel suddenly changes are avoided, the comfort of the environment is improved, and the interference on the operator is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creating labor.
[0025] Figure 1 The structure schematic view of the air release valve in the embodiment of the utility model is provided;
[0026] Figure 2 The sectional view of the air release valve in the non-air release state of the embodiment of the utility model is provided;
[0027] Figure 3 The sectional view of the air release valve in the air release state of the embodiment of the utility model is provided;
[0028] Figure 4 The sectional view of the air release valve in the air release state of the embodiment of the utility model is provided.
[0029] EXPLANATION OF DRAWINGS:
[0030] 100, air release valve; 1, valve body; 11, outer shell; 111, air inlet channel; 112, air outlet channel; 113, movable channel; 114, first connecting section; 115, second air inlet; 116, container groove; 12, opening and closing structure; 121, magnetic induction coil; 122, magnetic rod; 123, sealing sleeve; 124, second elastic member; 13, first elastic member; 14, end cover; 141, third air inlet; 2, blocking member; 21, first air inlet; 22, second connecting section; 23, blocking section; 24, first gap space; 25, second gap space; 3, sound-absorbing piece; 4, mounting frame; 41, mounting cavity; 42, protruding column.
[0031] The realization, functional features and advantages of the utility model will be further described in combination with embodiments with reference to the drawings. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0033] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.
[0034] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. 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 schemes are included, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B simultaneously satisfy the scheme. 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 utility model.
[0035] The utility model provides a kind of air release valve 100.
[0036] Please refer to Figures 1 to 4 In an embodiment of the utility model, the air release valve 100 includes valve main body 1 and plugging piece 2, the valve main body 1 includes shell 11 and open-close structure 12, the shell 11 is opened with the communication of air inlet channel 111, air outlet channel 112 and movable channel 113, the open-close structure 12 is movably arranged in movable channel 113, and the communication of air inlet channel 111 and air outlet channel 112 is blocked, plugging piece 2 is movably arranged in air inlet channel 111, and the first gap space 24 that communicates air outlet channel 112 is formed between the inner peripheral wall of air inlet channel 111, plugging piece 2 is equipped with the first air inlet 21 that communicates the air inlet end of air inlet channel 111, the open-close structure 12 blocks the communication of the air outlet end of first air inlet 21 and movable channel 113, plugging piece 2 and the air outlet end of air inlet channel 111 are elastically connected, and the air inlet end of air inlet channel 111 is closed, wherein the air release valve 100 has the air release state that the open-close structure 12 moves away from plugging piece 2 and makes air inlet channel 111 and air outlet channel 112 communicate, in the air release state, the second gap space 25 that communicates the first gap space 24 and the first air inlet 21 is formed between plugging piece 2 and the air inlet end of air inlet channel 111, and the first air inlet 21 communicates with movable channel 113.
[0037] In the utility model technical scheme, when needing to release air, open-close structure 12 moves away from plugging piece 2, at this time, the gas in external environment enters air outlet channel 112 through first air inlet 21 and movable channel 113 of plugging piece 2 in turn, realizes the communication of air inlet channel 111 and air outlet channel 112, in the moment that the gas in external environment enters air outlet channel 112, because the inside of air outlet channel 112 is negative pressure state, and the gas in external environment is standard atmospheric pressure, standard atmospheric pressure moves to air outlet channel 112 to overcome the elastic force of plugging piece 2 and push plugging piece 2 to move close to open-close structure 12, at this time, the gas in external environment enters air outlet channel 112 from first gap space 24, second gap space 25 and first air inlet 21, to rapidly supplement the pressure in air outlet channel 112, increase the pressure relief area, when the pressure difference between the air pressure in air outlet channel 112 and the air pressure in external environment gradually reduces, plugging piece 2 moves away from open-close structure 12 under the action of elastic restoring force, until plugging piece 2 closes the air inlet end of air inlet channel 111, in this air release process, because plugging piece 2 and the air outlet end of air inlet channel 111 are elastically connected, avoid the noise and vibration that open-close structure 12 hits the inner peripheral wall of air inlet channel 111 when the internal pressure of air outlet channel 112 suddenly changes, improve the comfort of environment, reduce the interference to operator.
[0038] The opening and closing structure 12 can be a driving member and a plug, the output end of the driving member is connected with the plug, the plug is driven to move reciprocatingly in the movable channel 113, the plug can also be made of elastic material to reduce the impact generated when the plug moves close to or away from the blocking member 2, the opening and closing structure 12 can also be a magnetic sensing coil 121 and a magnetic rod member 122, the magnetic sensing coil 121 is sleeved on the magnetic rod member 122, the magnetic rod member 122 is contained in the movable channel 113, the magnetic rod member 122 is driven to move close to or away from the blocking member 2 by changing the current direction in the magnetic sensing coil 121, and the utility model does not make any limitation on this.
[0039] The blocking member 2 is movably arranged in the air inlet channel 111 and controls the flow of gas from the air inlet channel 111 to the air outlet channel 112 by changing the position, in the air exhaust process, the blocking member 2 helps to balance the pressure in the air outlet channel 112 by the elastic force and the position change, so as to avoid the pressure mutation and the impact of the opening and closing structure 12 on the inner circumferential wall of the air inlet channel 111 to generate noise and vibration, the blocking member 2 can be made of elastic material to reduce the impact generated when the blocking member 2 moves away from the opening and closing structure 12 under the action of the elastic restoring force, the blocking member 2 is elastically connected with the air outlet end of the air inlet channel 111, the air inlet channel 111 can be provided with a connecting member at the air outlet end, the blocking member 2 is sleeved on the connecting member, the connecting member is provided with a second air inlet 115 communicated with the first air inlet 21, a spring is used to connect the blocking member 2 and the connecting member, the air inlet channel 111 can also be provided with a connecting member at the air outlet end, the connecting member is provided with a mounting groove, the blocking member 2 is movably arranged in the mounting groove, the bottom wall of the mounting groove is provided with a second air inlet 115 communicated with the first air inlet 21, a spring is used to connect the bottom wall of the mounting groove and the blocking member 2, and the utility model does not make any limitation on this.
[0040] Specifically, refer to Figure 2In an embodiment of the utility model, the first connecting section 114 is provided with a second air inlet 115, and the second air inlet 115 is in communication with the first air inlet 21 and the movable channel 113. The first connecting section 114 is located between the air inlet channel 111 and the movable channel 113. In the pressure relief state, the opening and closing structure 12 moves away from the blocking piece 2. At this time, the gas in the external environment enters the air outlet channel 112 through the first air inlet 21 of the blocking piece 2, the second air inlet 115 of the first connecting section 114 and the movable channel 113 in sequence, so that the air inlet channel 111 and the air outlet channel 112 are in communication. In the instant when the gas in the external environment enters the air outlet channel 112, the air outlet channel 112 is in a negative pressure state, while the gas in the external environment is standard atmospheric pressure. The standard atmospheric pressure moves to the air outlet channel 112 to overcome the elastic force of the blocking piece 2 and push the blocking piece 2 to move close to the opening and closing structure 12. At this time, the gas in the external environment enters the air outlet channel 112 through the first gap space 24, the second gap space 25 and the first air inlet 21, so as to rapidly supplement the pressure in the air outlet channel 112 and complete the pressure relief. The blocking piece 2 is movably sleeved on the first connecting section 114, so that the blocking piece 2 moves close to or away from the opening and closing structure 12 under the action of the gas pressure or the elastic restoring force. In the initial pressure relief state, the external air can only enter the air outlet channel 112 through the first air inlet 21 and the second air inlet 115, so as to accurately control the flow of the gas.
[0041] For optimizing the installation of the blocking piece 2, please refer to Figure 2 In an embodiment of the utility model, the first connecting section 114 is provided with a second air inlet 115, and the second air inlet 115 is in communication with the first air inlet 21 and the movable channel 113. The first connecting section 114 is located between the air inlet channel 111 and the movable channel 113. In the pressure relief state, the opening and closing structure 12 moves away from the blocking piece 2. At this time, the gas in the external environment enters the air outlet channel 112 through the first air inlet 21 of the blocking piece 2, the second air inlet 115 of the first connecting section 114 and the movable channel 113 in sequence, so that the air inlet channel 111 and the air outlet channel 112 are in communication. In the instant when the gas in the external environment enters the air outlet channel 112, the air outlet channel 112 is in a negative pressure state, while the gas in the external environment is standard atmospheric pressure. The standard atmospheric pressure moves to the air outlet channel 112 to overcome the elastic force of the blocking piece 2 and push the blocking piece 2 to move close to the opening and closing structure 12. At this time, the gas in the external environment enters the air outlet channel 112 through the first gap space 24, the second gap space 25 and the first air inlet 21, so as to rapidly supplement the pressure in the air outlet channel 112 and complete the pressure relief. The blocking piece 2 is movably sleeved on the first connecting section 114, so that the blocking piece 2 moves close to or away from the opening and closing structure 12 under the action of the gas pressure or the elastic restoring force. In the initial pressure relief state, the external air can only enter the air outlet channel 112 through the first air inlet 21 and the second air inlet 115, so as to accurately control the flow of the gas.
[0042] To reduce the noise generated during the pressure relief process, please refer to Figure 2 and Figure 3 In an embodiment of the present application, the sealing member 2 has a second connecting section 22 and a sealing section 23, the second connecting section 22 is movably sleeved on the first connecting section 114, the sealing section 23 is arranged close to the air inlet end of the air inlet passage 111, and the cross-sectional area of the sealing section 23 gradually increases from the air inlet end close to the air inlet passage 111 to the air inlet end away from the air inlet passage 111. The design of gradually increasing cross-sectional area of the sealing section 23 can slow down the gas flow rate. According to the principle of fluid mechanics, the flow rate of fluid will increase when passing through a smaller cross-sectional area, and the flow rate will slow down when passing through a larger cross-sectional area. This design helps to control the gas flow rate near the air inlet end of the sealing member 2, reduce the impact of gas on the sealing member 2, and reduce noise and vibration; the gradually increasing cross-sectional area of the sealing section 23 helps to more evenly distribute pressure, and the larger cross-sectional area can reduce the local high-pressure area when the gas passes through the sealing member 2, thereby reducing the risk of wear and damage caused by uneven pressure; the gradually increasing cross-sectional area of the sealing section 23 can also provide a guiding effect for the air entering the air inlet passage 111, which helps to guide the airflow to smoothly enter the air inlet passage 111 and the air outlet passage 112, and reduce the turbulence and turbulence of the airflow.
[0043] Further, please refer to Figure 1 and Figure 2 In an embodiment of the present application, the valve body 1 further comprises an end cover 14, the end cover 14 is connected with the inner peripheral wall of the air inlet passage 111, a third air inlet 141 is formed in the end away from the housing 11 of the end cover 14, and the sealing member 2 can abut against the end cover 14 to close the third air inlet 141. When the sealing member 2 abuts against the end cover 14, i.e. the air release valve 100 is in a non-air release state, the third air inlet 141 is closed to prevent gas from entering; in the air release state, the sealing member 2 is moved away from the end cover 14 under the push of air pressure, allowing gas to flow into the air outlet passage 112 through the third air inlet 141, the first air inlet 21 and the second air inlet 115, so as to control the air pressure in the air outlet passage 112; by adjusting the distance between the sealing member 2 and the end cover 14, the opening and closing of the third air inlet 141 can be flexibly controlled, thereby accurately controlling the gas flow. The abutting design of the sealing member 2 and the end cover 14 provides good sealing performance, ensuring the reliability when the gas flow needs to be cut off, and the end cover 14 and the sealing member 2 can be relatively easily disassembled and reinstalled, making subsequent maintenance and replacement simpler.
[0044] To further reduce the noise generated when the air release valve 100 releases air, please refer to Figure 1 and Figure 2In an embodiment of the utility model, the air release valve 100 includes the sound absorbing sheet 3, the sound absorbing sheet 3 is located at the air inlet end of the air inlet channel 111. The sound absorbing sheet 3 is of a gas permeable structure, and the sound absorbing sheet 3 is usually filled with sound absorbing materials (such as glass wool, foamed plastic, etc.) inside. These materials can absorb sound wave energy and reduce the propagation of noise. When the gas passes through the sound absorbing sheet 3 and enters the air inlet channel 111, the sound absorbing sheet 3 absorbs the sound wave energy of the airflow to play a role of sound absorption and noise reduction, thereby improving the comfort of the environment.
[0045] Please refer to Figure 1 and Figure 2 In an embodiment of the utility model, the opening and closing structure 12 includes the magnetic sensing coil 121, the magnetic rod 122 and the sealing sleeve 123. The magnetic rod 122 is contained in the movable channel 113 and is elastically connected with the movable channel 113. The sealing sleeve 123 is located at one end of the magnetic rod 122 close to the blocking piece 2. The magnetic sensing coil 121 is sleeved on the outer circumferential wall of the movable channel 113. The magnetic sensing coil 121 is the power source of the opening and closing structure 12. By adjusting the current size and direction in the magnetic sensing coil 121, the moving distance and direction of the magnetic rod 122 can be accurately controlled to realize the opening and closing of the opening and closing structure 12. When the magnetic sensing coil 121 is powered, the generated magnetic field attracts the magnetic rod 122 to move away from the blocking piece 2. At this time, the air release valve 100 is in the air release state. When the current in the magnetic sensing coil 121 is reduced or cut off, the magnetic field is weakened or disappears, and the magnetic rod 122 returns to the original position under the action of the elastic restoring force. The blocking piece 2 also moves back to the closed position under the action of the elastic restoring force. At this time, the air release valve 100 is in the non-air release state. The sealing sleeve 123 ensures that the magnetic rod 122 closes the air outlet end of the first air inlet 21 during the movement process to avoid gas leakage and maintain the sealing performance of the air release valve 100. The magnetic sensing coil 121 can quickly respond to the current change to realize the rapid movement of the magnetic rod 122 and improve the response speed of the air release valve 100. The opening and closing structure 12 is simple and reliable in design, reduces mechanical wear and tear, and improves the service life and reliability of the air release valve 100.
[0046] Please refer to Figure 1 and Figure 2In an embodiment of the present application, the air release valve 100 comprises a mounting frame 4, the mounting frame 4 is connected with the shell 11, the mounting frame 4 is provided with a mounting cavity 41, the magnetic induction coil 121 and part of the structure of the shell 11 are contained in the mounting cavity 41. The mounting frame 4 is connected with the shell 11, which provides fixing and supporting effect for the overall structure of the air release valve 100. It can ensure that each component of the air release valve 100 maintains the correct position and alignment during operation; the mounting frame 4 is provided with the mounting cavity 41 for containing the magnetic induction coil 121 and part of the structure of the shell 11, which helps to protect these components and integrate them in a compact space, saves space, and facilitates installation and integration into a larger system.
[0047] More specifically, please refer to Figure 1 and Figure 2 In an embodiment of the present application, the bottom wall of the mounting cavity 41 is formed with a convex column 42, the opening and closing structure 12 comprises a second elastic member 124, the convex column 42 extends into the movable channel 113, and the second elastic member 124 is sleeved on the magnetic rod member 122 and located between the magnetic rod member 122 and the convex column 42. When the magnetic induction coil 121 is energized, the generated magnetic field attracts the magnetic rod member 122 to move away from the plugging member 2, at this time the air release valve 100 is in the air release state, when the current in the magnetic induction coil 121 is reduced or cut off, the magnetic field is weakened or disappears, the magnetic rod member 122 returns to the original position under the action of the elastic restoring force of the second elastic member 124, and the plugging member 2 also moves back to the closed position under the action of the elastic restoring force; the second elastic member 124 can absorb the impact force when the magnetic rod member 122 moves, reduce the noise and vibration generated when the magnetic rod member 122 moves, and provide restoring force; the convex column 42 provides limiting and supporting for the magnetic rod member 122 in the movable channel 113, ensures that the magnetic rod member 122 moves on the correct path, and prevents it from moving excessively or derailing, thereby improving the safety of the air release valve 100.
[0048] The utility model also proposes a breast pump, the breast pump includes air release valve 100, air pump, sucking disc and storage milk container, the specific structure of air release valve 100 refers to the above embodiment, because the breast pump adopts all technical schemes of all above embodiments, therefore at least has all beneficial effects brought by the technical scheme of above embodiment, does not repeat here one by one. Among them, the air pump has the air cavity for generating negative pressure, the air outlet channel 112 is connected with the air cavity of air pump, the sucking disc is connected with the air cavity, the storage milk container is used for storing the milk of sucking disc sucking. The air pump works to generate negative pressure in the air cavity, the communication between the sucking disc and the air cavity makes the sucking disc generate negative pressure for sucking, and the sucking disc is designed to be attached to the breast of the user. The storage milk container is used for collecting and storing the breast milk sucked by the sucking disc; when the air pump works to generate negative pressure in the air cavity, the air release valve 100 works to control the external air to enter the air cavity to supplement the pressure in the air cavity, prevent the discomfort caused by excessive negative pressure, and ensure the effective operation of the breast pump; through the cooperation of the air pump and the air release valve 100, the negative pressure is accurately controlled, and the breast pump can more effectively suck the milk, improving the breast pumping efficiency.
[0049] The above-mentioned is only the exemplary implementation of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by the utility model specification and the attached drawings, or direct / indirect application in other related technical fields under the technical concept of the utility model is included in the patent protection range of the utility model.
Claims
1. A deflation valve characterized by, The valve body comprises a shell and an opening and closing structure, the shell is internally provided with an air inlet channel, an air outlet channel and a movable channel which are in communication with each other, and the opening and closing structure is movably arranged in the movable channel and blocks the communication between the air inlet channel and the air outlet channel. A blocking piece is movably arranged in the air inlet channel and forms a first gap space in communication with the air outlet channel between the inner wall of the air inlet channel and the blocking piece; the blocking piece is provided with a first air inlet in communication with the air inlet end of the air inlet channel, the opening and closing structure blocks the communication between the air outlet end of the first air inlet and the movable channel, and the blocking piece is elastically connected with the air outlet end of the air inlet channel and closes the air inlet end of the air inlet channel. The air release valve has an air release state in which the opening and closing structure moves away from the blocking piece and makes the air inlet channel communicate with the air outlet channel. In the air release state, the blocking piece and the air inlet end of the air inlet channel form a second gap space in communication with the first gap space and the first air inlet, and the first air inlet communicates with the movable channel. The air outlet end of the air inlet channel forms a first connecting section, the blocking piece is movably arranged in the first connecting section and is elastically connected with the first connecting section, the first connecting section is provided with a second air inlet, and the second air inlet is arranged in communication with the first air inlet and the movable channel.
2. The air release valve of claim 1, wherein, The first connecting section is provided with a containing groove, the bottom wall of the containing groove is provided with the second air inlet, the valve body comprises a first elastic piece, the first elastic piece is contained in the containing groove and located between the bottom wall of the containing groove and the blocking piece.
3. The air release valve of claim 2, wherein, The blocking piece has a second connecting section and a blocking section, the second connecting section is movably arranged in the first connecting section, the blocking section is arranged close to the air inlet end of the air inlet channel, and the cross-sectional area of the blocking section gradually increases from close to the air inlet end of the air inlet channel to away from the air inlet end of the air inlet channel.
4. The air release valve of claim 3, wherein, The valve body further comprises an end cover, the end cover is connected with the inner wall of the air inlet channel, one end of the end cover away from the shell is provided with a third air inlet, and the blocking piece can abut against the end cover to close the third air inlet.
5. A deflation valve as claimed in any one of claims 1 to 4, wherein, The air release valve comprises a sound-absorbing piece arranged at the air inlet end of the air inlet channel.
6. A deflation valve as claimed in any one of claims 1 to 4, wherein, The opening and closing structure comprises a magnetic sensing coil, a magnetic rod piece and a sealing sleeve, the magnetic rod piece is contained in the movable channel and is elastically connected with the movable channel, the sealing sleeve is arranged at one end of the magnetic rod piece close to the blocking piece, and the magnetic sensing coil is arranged on the outer wall of the movable channel.
7. The air release valve of any one of claims 1 to 4, wherein, The air release valve comprises a mounting frame connected with the shell, the mounting frame is provided with a mounting cavity, and the magnetic sensing coil and part of the structure of the shell are contained in the mounting cavity.
8. The air release valve of claim 7, wherein, The bottom wall of the mounting cavity is provided with a convex column, the opening and closing structure comprises a second elastic piece, the convex column extends into the movable channel, the second elastic piece is arranged on the magnetic rod piece and located between the magnetic rod piece and the convex column.
9. The air release valve of claim 8, wherein, The air pump has an air cavity for generating negative pressure.
10. A breast pump, characterized in that The air release valve of any one of claims 1 to 9, wherein the air outlet passage is in communication with an air cavity of the air pump; a suction cup in communication with the air cavity; and a milk storage container for storing milk sucked by the suction cup.