CN109621043B

CN109621043B - Anti-reflux duckbill valve

Info

Publication number: CN109621043B
Application number: CN201910065649.4A
Authority: CN
Inventors: 邓华; 刘水华; 张毅
Original assignee: Changzheng Medical Suzhou Co ltd
Current assignee: Shanghai NeWin Baby Products Co., Ltd
Priority date: 2019-01-23
Filing date: 2019-01-23
Publication date: 2022-03-11
Anticipated expiration: 2039-01-23
Also published as: CN109621043A

Abstract

The invention discloses an anti-reflux duckbill valve which is arranged at a milk flowing end, the milk flowing end is connected with a milk storage bottle, a first valve and a second valve are arranged on the duckbill valve, the first valve comprises an arc-shaped first deformation wall, the two first deformation walls are gradually closed from top to bottom, a first notch is formed at the tail end, and the first valve is connected with the milk flowing end and the milk storage bottle; the second valve comprises second deformation walls in an arc shape, the two second deformation walls gradually draw close from top to bottom and form a second notch at the tail end, and the second valve is communicated with the external atmospheric pressure and the milk storage bottle. The second valve is normally opened to enable the milk storage bottle to be communicated with the external atmospheric pressure, and the milk storage bottle maintains a ventilation state; the first valve is opened or closed along with the switching between the vacuum negative pressure and the normal pressure, and milk can flow into the milk storage bottle. When the milk storage bottle shakes, milk extrudes the deformation wall from the outer side, so that the cut is closed, and the milk is effectively prevented from leaking and flowing backwards.

Description

Anti-reflux duckbill valve

Technical Field

The invention relates to the field of mother and infant electrical appliances, in particular to an anti-reflux duckbill valve.

Background

An electric breast pump is an instrument used for a nursing mother after delivery, and is a tool for squeezing (sucking) breast milk accumulated in mammary glands. The internal vacuum negative pressure pump changes the internal air pressure change, namely, the circulation suction and discharge are performed to imitate the action of sucking and allowing breast milk by the baby.

According to the existing breast pump, an air hole is reserved in the position where the tee joint is connected with the milk storage bottle, the milk storage bottle is communicated with air, the pressure in the milk storage bottle is kept the same as the atmospheric pressure, and therefore breast milk can naturally flow into the milk storage bottle from the incision of the duckbill valve. The air holes also have obvious defects, and when the nursing bottle is poured carelessly or is laid on one side in a milk sucking posture, breast milk in the nursing bottle flows out of the nursing bottle through the air holes, so that the embarrassing phenomena of waste and leakage on the body are caused.

Disclosure of Invention

The invention aims to provide an anti-backflow duckbill valve which can realize ventilation and has an anti-backflow function.

The technical scheme adopted for solving the technical problems is as follows: a backflow-preventing duckbill valve is arranged at a milk flowing end, the milk flowing end is connected with a milk storage bottle in a sealing mode, a first valve and a second valve are arranged on the duckbill valve, the first valve comprises arc-shaped first deformation walls located at two side portions of the first valve, the two first deformation walls are gradually closed from top to bottom, a long and thin first cut is formed at the tail end of the first deformation wall, and the first valve is connected with the milk flowing end and the milk storage bottle; the second valve comprises arc-shaped second deformation walls located on two sides of the second valve, the two second deformation walls gradually draw close from top to bottom and form a long and thin second cut at the tail end, and the second valve is communicated with the external atmospheric pressure and the milk bottle.

As an improvement of the scheme, the first valve and the second valve are connected to the sealing gasket together, the first cut and the second cut point to the inner cavity of the milk storage bottle, and the periphery of the sealing gasket is in sealing fit with the port of the milk storage bottle.

As an improvement of the scheme, a first air pressure cavity and a second air pressure cavity which are separated from each other are formed in the middle of the sealing gasket, a first connecting part inserted into the first air pressure cavity and a second connecting part inserted into the second air pressure cavity are formed at the milk flowing end respectively, the first valve is arranged at the lower end of the first air pressure cavity, and the second valve is arranged at the lower end of the second air pressure cavity.

As the improvement of above-mentioned scheme, the duckbilled valve is made by the liquid silica gel of food grade material.

As an improvement of the scheme, the wall thickness of the first deformation wall and the second deformation wall is 0.4-0.6 mm.

As an improvement of the scheme, the milk flowing end is communicated with a vacuum negative pressure device.

Has the advantages that: in the present invention, the switching of the open and closed states of the first slit and the second slit can be easily achieved by the deformation of the first deforming wall and the second deforming wall. The second valve is in a normally open state, so that the milk storage bottle is communicated with the external atmospheric pressure, the milk storage bottle is in a ventilation state, and milk can continuously flow into the milk storage bottle through the first cut; the first valve is opened or closed along with the switching between the vacuum negative pressure and the normal pressure, and once the first cut is opened, milk flows into the milk storage bottle immediately. When the milk storage bottle shakes, milk extrudes the first deformation wall and the second deformation wall from the outer side, so that the first notch and the second notch are closed, and the milk is effectively prevented from leaking and flowing backwards.

Drawings

The invention is further described with reference to the following figures and examples:

FIG. 1 is an assembled view of a hands-free hidden breast pump;

FIG. 2 is a perspective view of a hands-free concealed breast pump;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a schematic view of the internal structure of a breast pump main unit;

FIG. 5 is a schematic structural view of a milk collecting device;

FIG. 6 is a schematic cross-sectional view of the breast pump with the bladder in a natural state;

FIG. 7 is a schematic cross-sectional view of a breast pump with the bladder in a negative pressure fit;

FIG. 8 is a schematic view of the duckbill valve showing the first valve open during operation of the breast pump;

FIG. 9 is a schematic view of the duckbill valve with the first valve closed during operation of the breast pump;

FIG. 10 is a front view of the bladder;

FIG. 11 is a schematic sectional view taken along line A-A of FIG. 10;

figure 12 is a schematic perspective view of a duckbill valve;

FIG. 13 is a side view of a nursing mother wearing a hands-free hidden breast pump;

fig. 14 is a front view of a nursing mother wearing a hands-free hidden breast pump.

Detailed Description

Referring to fig. 1 to 3, a hand-free hidden breast pump of the present embodiment is provided, which comprises a breast pump main unit 1, a milk collecting device 3, a milk storage bottle 2, and other parts. The breast pump host 1 is internally provided with a vacuum negative pressure device and a main control circuit board 16 connected with the vacuum negative pressure device, and the main control circuit board 16 is connected with a control panel 11 arranged on the outer surface of the breast pump host 1. In fig. 2, the control panel 11 is arranged at the top of the breast pump main unit 1, so that on one hand, the operation of a nursing mother can be facilitated, and on the other hand, the control panel 11 can be prevented from being extruded when being worn inside a bra. The control panel 11 is provided with a startup/shutdown button, a suction force size upshift operation button, a suction force size downshift operation button, a lactation promotion and lactation mode switching button of the breast pump, and is also provided with a suction force gear prompting lamp, a breast pump charging state prompting lamp and the like. The nursing mother operates the control panel 11 according to the actual situation, sends an instruction to the main control circuit board 16, and the main control circuit board 16 controls and adjusts the working state of the vacuum negative pressure device. When the breast pump host 1 is in the charging state, the charging state prompting lamp gives a prompt. Meanwhile, a wireless communication module 18 for receiving the electric signal of the mobile terminal is also arranged in the breast pump host 1. In this embodiment, the mobile terminal is a mobile phone, the wireless communication module 18 is configured to analyze a communication protocol with the mobile phone, receive an electrical signal sent by the mobile phone, and send the electrical signal to the main control circuit board 16, and the wireless communication module 18 adopts a bluetooth or WIFI communication mode. A plurality of control options are displayed in the APP program on the mobile phone, and the control options are basically consistent with the options on the control panel 11 and are used for realizing the adjustment of the working state of the breast pump. Meanwhile, information such as the suction gear state and the residual electric quantity of the breast pump can be displayed in the APP. The working state of the breast pump is controlled through the mobile terminal, the breast pump is greatly convenient for a nursing mother to use the breast pump in a public place, the breast pump is a hand-free hidden type breast pump, the nursing mother can be dressed in advance, and when the breast pump is needed, the breast pump can be opened only through the control of the mobile terminal, and the breast pump is convenient and fast.

As shown in fig. 4, a lithium battery 15 and a charging interface 17 for charging and discharging are provided in the breast pump main unit 1, and the breast pump main unit can be charged conveniently by using an adapter. The vacuum negative pressure device who is located breast pump host computer 1 includes vacuum pump 13 and release valve 14, the lower tip of breast pump host computer 1 is provided with U-shaped cavity 12, 3 settings of collection milk device are in U-shaped cavity 12, 3 one end of collection milk device and vacuum negative pressure device sealing connection, the other end with store up 2 sealing connection of feeding bottle, store up feeding bottle 2 and breast pump host computer 1's lower extreme butt joint, first curved surface is set to the lateral surface of breast pump host computer 1, the lateral surface that stores up feeding bottle 2 sets up the second curved surface, first curved surface links up the arc curved surface that forms and brassiere binding face matching with the second curved surface, the medial surface of breast pump host computer 1 and the medial surface that stores up feeding bottle 2 set to coplane.

The control panel 11 is arranged on the outer surface of the breast pump host 1, so that a nursing mother can conveniently control and adjust the working condition of the breast pump. Meanwhile, the whole machine is highly integrated, the vacuum negative pressure device and the milk collecting device 3 are integrally installed in the breast pump host 1, the structure is compact, and no pipeline constraint exists. In addition, by combining human engineering, the outer side surface of the breast pump host 1 is set to be a first curved surface matched with the bra attaching surface, the outer side surface of the milk storage bottle 2 is set to be a second curved surface matched with the bra attaching surface, the first curved surface and the second curved surface are connected to form an arc-shaped curved surface matched with the bra attaching surface, and a nursing mother can easily and naturally put the breast pump into a nursing bra; the inner side surface of the breast pump main body 1 and the inner side surface of the milk storage bottle 2 are arranged in a plane shape so as to be attached to one side of the breast. The volume of the whole breast pump is minimized while the layout is reasonable. The whole appearance of the breast pump is exquisite and smooth, the breast pump is very suitable for being worn and hidden, and the breast pump can achieve simple and hidden breast pumping in public places with elegant and elegant actions.

As shown in fig. 5 is a milk collecting device 3, this milk collecting device 3 is hidden inside breast pump host 1, specifically include tee bend 32, gasbag 31 and duckbill valve 33, tee bend 32 includes the atmospheric pressure end, the end of suckleing and flow milk end, whole tee bend 32 imbeds in the U-shaped cavity 12 of the tip under breast pump host 1, gasbag 31 sets up in the atmospheric pressure end and with vacuum negative pressure device sealing connection, the end of suckleing is the loudspeaker form and sets up to be directional breast through the medial surface of breast pump host 1, the butt surface of the end of suckleing and the medial surface parallel and level of breast pump host 1, guarantee that the medial surface of breast pump is complete level, increase the comfort level that breast-feeding mother dressed. The duckbill valve 33 is fixedly arranged at the milk flowing end, the milk flowing end is connected with the milk storage bottle 2 in a sealing mode, and milk sucked out by the breast pump flows into the milk storage bottle 2 through the duckbill valve 33. The milk storage bottle 2 is screwed at the milk flowing end through the screw threads on the bottle mouth, and is convenient to disassemble and clean. Meanwhile, an air bag cover is arranged at the inner top of the U-shaped cavity 12, a first air hole and a second air hole are formed in the air bag cover, the first air hole is communicated with the vacuum pump 13 through a hose, the second air hole is communicated with the air release valve 14 through a hose, the air bag 31 is connected to the air bag cover in a sealing mode, and the air bag 31 is communicated with the vacuum pump 13 and the air release valve 14 simultaneously.

The milk collecting device 3 is integrated at the lower end part of the breast pump host 1, so that on one hand, the volume of the whole breast pump is reduced, and the breast pump is convenient for a nursing mother to wear; on the other hand, the problem of pipeline constraint is effectively avoided through integrated installation. Meanwhile, the milk collecting device 3 can connect the breast pump host 1 and the milk storage bottle 2 into a whole, thereby playing the function effect of starting and stopping, and further leading the volume of the breast pump to be thinner and smaller.

The air bag 31 is made of liquid silica gel made of food-grade materials, has excellent elasticity and fatigue resistance, and is mainly used for isolating air pressure from breast milk. As shown in fig. 10 and 11, the air bag 31 has a flat U shape, and the air pressure end is provided in a flat U shape conforming to the air bag 31. The wide surface of the air bag 31 is arranged right opposite to the breast pumping end, the thickness between the two wide surfaces is small, the thinness of the whole breast pump is favorably reduced, and a breast-feeding mother can conveniently wear the breast pump and the breast shield. Meanwhile, the distance between the two narrow surfaces of the air bag 31 is larger, which is beneficial to increasing the volume of the whole air bag 31, and further increasing the increasing range of the air pressure difference in the whole tee joint 32, so as to provide sufficient pressure for sucking milk. The air bag cover is provided with deformation guide surfaces which are arranged corresponding to the two narrow surfaces of the air bag 31, and the deformation guide surfaces guide the air bag 31 to deviate from the breast to be attached to the breast under the vacuum negative pressure to form a flat shape. As shown in fig. 7, when the air bag 31 is flattened by negative pressure, the whole air bag 31 deviates from the breast, and further the gap between the breast and the air bag 31 is increased, so that the milk can smoothly flow into the milk flowing end from the tee 32. The deformation guide surface can be specifically set as a folded surface attached to the surface of the airbag 31, and the folded part of the folded surface is vertically deviated from the airbag 31, so that the deviation guide of the whole airbag 31 is realized.

Fig. 6 and 7 show two states of the air bag 31 when the breast pump is in operation, respectively. In fig. 6, the air bag 31 is in a natural state, at this time, the release valve 14 is in an open state, the air bag 31 is communicated with the atmospheric pressure, no negative pressure is formed in the tee joint 32, and the whole breast pump is in a release state, which is mainly for facilitating the milk to smoothly flow into the milk storage bottle 2; in fig. 7, the air bag 31 is in a negative pressure attaching state, at this time, the air release valve 14 is in a closed state, the air bag 31 is only communicated with the vacuum pump 13 and is completely vacuumized, negative pressure is formed in the tee joint 32 due to the reduction of the volume of the air bag 31, and the whole breast pump is in a suction state, so that the milk in the breast is sucked out.

The duckbill valve 33 is arranged at the milk flowing end and has the function of preventing backflow. As shown in fig. 12, the duckbill valve 33 is provided with a first valve 331 and a second valve 332, the first valve 331 includes arc-shaped first deformable walls 3311 at two sides thereof, the two first deformable walls 3311 gradually get close from top to bottom and form a long first cut 3312 at the end, and the first valve 331 is connected to the milk end and the milk bottle 2; the second valve 332 comprises arc-shaped second deformable walls 3321 at two sides of the second valve, the two second deformable walls 3321 gradually get close from top to bottom and form a long second notch 3322 at the tail end, and the second valve 332 is communicated with the outside atmosphere and the milk bottle 2. The duckbill valve 33 is made of liquid silica gel made of food grade materials, and has the characteristics of excellent sealing property, tear strength, rebound resilience, yellowing resistance, thermal stability, thermal aging resistance and compression deformation resistance. The wall thickness of the first deforming wall 3311 and the second deforming wall 3321 is 0.4-0.6 mm, the area of the deforming wall is large and thin, and the deformation is easy to rebound and deform under stress.

Switching of the opened and closed states of the first and second cutouts 3312 and 3322 is easily achieved by the deformation of the first and second deforming walls 3311 and 3321. The second valve 332 is connected to the outside atmosphere, and the second deformable wall 3321 is not pressed by the negative pressure, so that it is normally open, and the milk bottle 2 is kept in a ventilation state, and the milk can continuously flow into the milk bottle 2 through the first cut 3312; and the first valve 331 is opened or closed following the switching between the vacuum negative pressure and the normal pressure. When the tee 32 is relieved of negative pressure, the first notch 3312 is opened and milk flows into the milk bottle 2 immediately. When the milk bottle 2 shakes, the milk presses the first deforming wall 3311 and the second deforming wall 3321 from the outside, so that the first notch 3312 and the second notch 3322 are closed, the milk cannot flow out of the milk bottle 2, and the milk is effectively prevented from leaking and flowing backwards.

Preferably, the first valve 331 and the second valve 332 are connected together to a sealing gasket 333, the first cut-out 3312 and the second cut-out 3322 are both directed to the inner cavity of the milk storage bottle 2, and the periphery of the sealing gasket 333 is in sealing engagement with the port of the milk storage bottle 2. When the milk storage bottle 2 is in threaded connection with the milk flowing end, the port of the milk storage bottle 2 is tightly abutted to the lower side face of the sealing gasket 333, meanwhile, the threaded connection mode can provide pressure to enable the upper side face of the sealing gasket 333 to be tightly attached to the milk flowing end, and the sealing connection between the milk flowing end and the milk storage bottle 2 is effectively guaranteed. Meanwhile, a first air pressure chamber and a second air pressure chamber which are separated from each other are formed in the middle of the sealing gasket 333, a first connection portion inserted into the first air pressure chamber and a second connection portion inserted into the second air pressure chamber are respectively formed at the milk flowing end, the first valve 331 is disposed at the lower end of the first air pressure chamber, the second valve 332 is disposed at the lower end of the second air pressure chamber, the first air pressure chamber is communicated with the milk flowing end, and the second air pressure chamber is communicated with the external atmospheric pressure. The first air pressure cavity is connected with the first connecting part in an interference fit manner, the second air pressure cavity is connected with the second connecting part in an interference fit manner, and valve failure caused by overlarge deformation of the upper end parts of the first valve 331 and the second valve 332 can be avoided.

Figures 8 and 9 show a schematic view of the state of the first valve 331 in the duckbill valve 33 when the breast pump is in operation. In fig. 8, the air bag 31 is in a natural state, the inside of the tee 32 is at a normal pressure, the first cut 3312 is naturally in an open state, and milk collected at the milk end flows into the milk storage bottle 2 through the first valve 331; in fig. 9, the air bag 31 is in a negative pressure fit state, the tee 32 is in a negative pressure state, the first notch 3312 is in a closed state under the extrusion of the negative pressure, and the sucked milk is converged to the milk flowing end and stays at the front end of the first valve 331.

Fig. 13 and 14 are schematic diagrams showing the effect of the hands-free hidden type breast pump worn by the nursing mother, and the hands-free hidden type breast pump can be hidden in the bra well, so that the nursing mother can conveniently and freely suck milk in a public place.

While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The utility model provides a prevent duckbilled valve against current, sets up in flowing the milk end, flows milk end sealing connection and has the storage feeding bottle, its characterized in that: the duckbill valve is provided with a first valve and a second valve, the first valve comprises arc-shaped first deformation walls positioned at two side parts of the duckbill valve, the two first deformation walls are gradually closed from top to bottom and form a long and thin first cut at the tail end, and the first valve is connected with the milk end and the milk storage bottle; the second valve is including the second that is the arc form that is located its both sides portion and warp the wall, and two second warp the wall from top to bottom draw close gradually and form the second incision of long and thin form at the end, and the inner chamber of first incision and second incision all point to storing up the feeding bottle, and the second valve is in normally open state and makes storage feeding bottle and external atmospheric pressure intercommunication, and when storage feeding bottle took place to rock, the milk extrudees first deformation wall and second from the outside and warp the wall, and then makes first incision and second incision close.

2. The anti-reflux duckbill valve of claim 1 wherein: the first valve and the second valve are connected on the sealing gasket together, and the periphery of the sealing gasket is in sealing fit with the port of the milk storage bottle.

3. The anti-reflux duckbill valve of claim 2 wherein: the middle part of the sealing gasket forms a first air pressure cavity and a second air pressure cavity which are separated from each other, the milk flowing end is respectively provided with a first connecting part inserted into the first air pressure cavity and a second connecting part inserted into the second air pressure cavity, the first valve is arranged at the lower end of the first air pressure cavity, and the second valve is arranged at the lower end of the second air pressure cavity.

4. An anti-reflux duckbill valve according to any one of claims 1 to 3, wherein: the duckbill valve is made of liquid silica gel made of food-grade materials.

5. The anti-reflux duckbill valve according to claim 4 wherein: the wall thickness of the first deformation wall and the second deformation wall is 0.4-0.6 mm.

6. The anti-reflux duckbill valve of claim 1 wherein: the milk flowing end is communicated with a vacuum negative pressure device.