Duckbill valve for breast pump

Abstract

The utility model provides a duckbill valve for a breast pump, which relates to the field of breast pumps and comprises a valve body and a valve clack. A groove is formed in the bottom of the valve body; the groove extends in the vertical direction; an opening is formed in the side wall of the valve body; the opening extends along the horizontal direction; the opening is communicated with the groove; the valve clack is fixed to the side wall of the valve body. The valve clack comprises an upper clack, a lower clack, a first connecting clack and a second connecting clack; a liquid channel is defined by the upper valve, the lower valve, the first connecting valve and the second connecting valve; the liquid channel comprises a liquid inlet and a liquid outlet; and the liquid inlet is connected and communicated with the opening. According to the duckbill valve for the breast pump, the problem that in the prior art, if a milk outlet of a tee joint is horizontally arranged and the duckbill valve is immersed in milk stored in a milk storage space, the milk in the milk storage space presses the duckbill valve, and the milk in the tee joint is difficult to discharge can be solved; the discharge efficiency of the duckbill valve immersed by milk is improved.

Description

Technical Field

[0001] This utility model relates to the field of breast pumps, and more particularly to a duckbill valve for a breast pump. Background Technology

[0002] A duckbill valve is a type of valve whose outlet closes due to elasticity when there is no internal pressure, and gradually widens as the internal pressure increases. Due to these characteristics, duckbill valves are often used in breast pumps. The duckbill valve is usually assembled on a T-joint, with the other two ends of the T-joint connected to a horn cover and a cylinder, respectively. When the cylinder generates suction, breast milk flows from the horn cover through the duckbill valve into the milk storage space. The principle is illustrated in a T-joint assembly for a wearable breast pump and disassembly / removal disclosed in Chinese Patent Application No. 202123391842.9.

[0003] The existing duckbill valve, as disclosed in Chinese Patent Application No. 202421023783.0, includes an outer shell and a base. It further includes: a cavity within the outer shell; a liquid inlet port connected to the cavity on the lower end face of the base; the outer shell constricting inwards from bottom to top and having a liquid outlet channel connected to the cavity at its top; the liquid outlet channel having a length of at least 2 mm and a width of at least 0.1 mm; the cavity within the outer shell consisting of an upper cavity and a lower cavity; the upper cavity, in a cross-sectional view, is conical with a cone-shaped tip angle of 47.64° and connected to the liquid outlet channel; the lower cavity is cylindrical and connected to the liquid inlet port. This existing duckbill valve reduces the probability of leakage by using different base and liquid outlet channel sizes.

[0004] When the duckbill valve provided by the above patent is applied to a breast pump, the lower cavity of the duckbill valve needs to be fitted onto the outside of the three-way opening. If the milk outlet of the three-way is set horizontally and the duckbill valve is submerged in the milk stored in the milk storage space, the pressure of the milk in the milk storage space on the duckbill valve makes it difficult for the milk in the three-way to be discharged. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a duckbill valve for a breast pump, which solves the problem in the prior art where, when the milk outlet of the three-way valve is set horizontally and the duckbill valve is submerged in the milk stored in the milk storage space, the milk in the milk storage space compresses the duckbill valve, making it difficult for the milk in the three-way valve to drain; thus improving the drainage efficiency of the duckbill valve when it is submerged in milk.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a duckbill valve for a breast pump, comprising a valve body and a valve disc; a groove is formed at the bottom of the valve body; the groove extends vertically; an opening is formed on the side wall of the valve body; the opening extends horizontally; the opening communicates with the groove;

[0008] The valve disc includes an upper disc and a lower disc; both the upper disc and the lower disc are planar.

[0009] The valve disc further includes a first connecting disc and a second connecting disc; the first connecting disc and the second connecting disc are arc-shaped; the first connecting disc and the second connecting disc are respectively located on both sides of the upper disc;

[0010] The first connecting lobe and the second connecting lobe connect the upper lobe and the lower lobe, respectively;

[0011] The upper lobe, the lower lobe, the first connecting lobe, and the second connecting lobe surround each other to form a liquid channel; the liquid channel includes an inlet and an outlet.

[0012] The lower plane of the upper lobe and the upper plane of the lower lobe are inclined to each other; the opening on the side with the larger cross-section of the liquid channel is used as the liquid inlet; the opening on the side with the smaller cross-section of the liquid channel is used as the liquid outlet;

[0013] The upper lobe, the lower lobe, the first connecting lobe, and the second connecting lobe are all fixed to the side wall of the valve body; the liquid inlet is connected to and communicates with the opening;

[0014] When the water pressure inside the duckbill valve increases, the outlet opens; when the water pressure inside the duckbill valve decreases, the outlet closes.

[0015] The duckbill valve for a breast pump provided by this utility model preferably has a groove whose cross-section gradually increases from top to bottom.

[0016] The above technical solution has the following advantages or beneficial effects:

[0017] The duckbill valve for a breast pump provided by this utility model includes a valve body and a valve disc. The bottom of the valve body has a groove that extends vertically, and the side wall of the valve body has an opening that extends horizontally and is connected to the groove. If the valve body is fitted onto the horizontal milk outlet, the milk can be transported from a horizontal direction to a vertical direction because the extension direction of the opening is perpendicular to the extension direction of the groove. When the opening faces downward, the liquid channel formed by the valve disc extends downward. At this time, the milk is compressed in the liquid channel, and the milk exerts a squeezing effect on the upper disc, lower disc, first connecting disc, and second connecting disc. The squeezing force here includes not only the liquid pressure but also the gravity of the liquid itself. The horizontal transport direction only has liquid pressure. When the duckbill valve is immersed in the milk stored in the milk storage space, the vertical transport direction gives the milk a greater squeezing force, making it easier to discharge the milk from the three-way valve.

[0018] In existing technology, if the milk outlet of the three-way valve is set horizontally and the duckbill valve is submerged in the milk stored in the milk storage space, the pressure of the milk in the milk storage space on the duckbill valve makes it difficult for the milk in the three-way valve to be discharged. The duckbill valve for breast pumps provided by this utility model has a groove at the bottom of the valve body and an opening on the side wall of the valve body, so that the opening is connected to the groove, thereby changing the liquid flow direction from horizontal to vertical, increasing the weight of the liquid itself, increasing the squeezing force on the valve disc, and thus improving the discharge efficiency of the duckbill valve when it is submerged in milk. Attached Figure Description

[0019] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.

[0020] Figure 1 This is a schematic diagram of the main structure of the duckbill valve for a breast pump provided in Embodiment 1 of this utility model.

[0021] Figure 2 This is a three-dimensional structural diagram of the duckbill valve for a breast pump provided in Embodiment 1 of this utility model.

[0022] Figure 3 This is a top view of the duckbill valve for a breast pump provided in Embodiment 1 of this utility model.

[0023] Figure 4 This is another three-dimensional structural schematic diagram of the duckbill valve for a breast pump provided in Embodiment 1 of this utility model. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0025] Example 1:

[0026] like Figures 1-4 As shown, Embodiment 1 of this utility model provides a duckbill valve for a breast pump, including a valve body 1 and a valve disc 2; a groove 11 is provided at the bottom of the valve body 1; the groove 11 extends in the vertical direction; an opening 12 is provided on the side wall of the valve body 1; the opening 12 extends in the horizontal direction; the opening 12 is connected to the groove 11.

[0027] Valve disc 2 includes an upper disc 21 and a lower disc 22; both the upper disc 21 and the lower disc 22 are planar.

[0028] The valve disc 2 also includes a first connecting disc 23 and a second connecting disc 24; the first connecting disc 23 and the second connecting disc 24 are arc-shaped; the first connecting disc 23 and the second connecting disc 24 are located on both sides of the upper disc 21 respectively;

[0029] The first connecting lobe 23 and the second connecting lobe 24 connect the upper lobe 21 and the lower lobe 22 respectively;

[0030] Upper lobe 21, lower lobe 22, first connecting lobe 23 and second connecting lobe 24 surround to form liquid channel 20; liquid channel 20 includes liquid inlet 201 and liquid outlet 202;

[0031] The lower plane of the upper lobe 21 and the upper plane of the lower lobe 22 are inclined to each other; the side with the larger cross-section of the liquid channel 20 is used as the inlet 201; the side with the smaller cross-section of the liquid channel 20 is used as the outlet 202.

[0032] The upper lobe 21, lower lobe 22, first connecting lobe 23 and second connecting lobe 24 are all fixed to the side wall of the valve body 1; the liquid inlet 201 is connected to and communicates with the opening 12;

[0033] When the water pressure inside the duckbill valve increases, the outlet 202 opens; when the water pressure inside the duckbill valve decreases, the outlet 202 closes.

[0034] When using the duckbill valve for a breast pump provided in Embodiment 1 of this utility model, the valve body 1 is fitted onto the milk outlet of the three-way valve in the breast pump. At this time, the side wall of the groove 11 is tightly attached to the side wall of the milk outlet of the three-way valve, the milk outlet of the three-way valve is in a horizontal position, and the liquid outlet 202 faces downward. The cylinder in the breast pump generates suction, and the milk enters the three-way valve from the horn cover, and then flows into the groove 11 of the valve body 1 from the milk outlet of the three-way valve. The milk enters the liquid channel 20 from the liquid inlet 201 through the opening 12. The milk in the liquid channel 20 generates pressure, which reduces the tilt angle formed by the upper flap 21 and the lower flap 22, thereby opening the liquid outlet 202 and discharging the milk from the liquid outlet 202. When the milk pressure in the liquid channel 20 is insufficient, the tilt angle formed by the upper flap 21 and the lower flap 22 increases, thereby closing the liquid outlet 202 and blocking the milk in the liquid channel 20.

[0035] The duckbill valve for a breast pump provided in Embodiment 1 of this utility model includes a valve body 1 and a valve disc 2. A groove 11 is provided at the bottom of the valve body 1, which extends vertically. An opening 12 is provided on the side wall of the valve body 1, which extends horizontally and is connected to the groove 11. If the valve body 1 is fitted onto the horizontal milk outlet, the milk can be transported from a horizontal direction to a vertical direction because the extension direction of the opening 12 is perpendicular to the extension direction of the groove 11. When the opening 12 faces downward, the extension direction of the liquid channel 20 formed by the valve disc 2 is downward. At this time, the milk is compressed in the liquid channel 20, and the milk exerts a squeezing effect on the upper disc 21, lower disc 22, first connecting disc 23 and second connecting disc 24. The squeezing force here includes not only the liquid pressure but also the gravity of the liquid itself. The horizontal transport direction only has liquid pressure. When the duckbill valve is immersed in the milk stored in the milk storage space, the vertical transport direction gives the milk a greater squeezing force, which makes it easier to discharge the milk in the three-way valve.

[0036] In the prior art, if the milk outlet of the three-way valve is set horizontally and the duckbill valve is submerged in the milk stored in the milk storage space, the milk in the milk storage space compresses the duckbill valve, making it difficult for the milk in the three-way valve to be discharged. The duckbill valve for a breast pump provided in Embodiment 1 of this utility model has a groove 11 at the bottom of the valve body 1 and an opening 12 on the side wall of the valve body 1, so that the opening 12 is connected to the groove 11, thereby changing the liquid flow direction from horizontal to vertical, increasing the weight of the liquid itself, increasing the squeezing force on the valve disc 2, and thus improving the discharge efficiency of the duckbill valve when it is submerged in milk.

[0037] like Figures 1-2As shown, the duckbill valve for a breast pump provided in Embodiment 1 of this utility model preferably has a groove 11 whose cross-section gradually increases from top to bottom. Milk is discharged from the milk outlet of the three-way valve, first passing through the end with a larger cross-section of the groove 11, and then the cross-section of the groove 11 gradually decreases. As the cross-section of the groove 11 decreases, the flow rate of the milk gradually increases, thereby improving the milk storage speed.

[0038] In summary, the duckbill valve for a breast pump provided by this utility model can solve the problem in the prior art where, when the milk outlet of the three-way valve is set horizontally and the duckbill valve is submerged in the milk stored in the milk storage space, the milk in the milk storage space compresses the duckbill valve, making it difficult for the milk in the three-way valve to be discharged; thus improving the discharge efficiency of the duckbill valve when it is submerged in milk.

[0039] Those skilled in the art should understand that variations can be implemented by combining existing technology and the above embodiments, and will not be elaborated here. Such variations do not affect the substantive content of this utility model, and will not be elaborated here.

[0040] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art; any possible variations and modifications made by those skilled in the art without departing from the technical solution of this utility model, or equivalent embodiments with equivalent changes, do not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A duckbill valve for a breast pump, characterized in that, The valve includes a valve body and a valve disc; a groove is formed at the bottom of the valve body; the groove extends vertically; an opening is formed on the side wall of the valve body; the opening extends horizontally; the opening communicates with the groove. The valve disc includes an upper disc and a lower disc; both the upper disc and the lower disc are planar. The valve disc further includes a first connecting disc and a second connecting disc; the first connecting disc and the second connecting disc are arc-shaped; the first connecting disc and the second connecting disc are respectively located on both sides of the upper disc; The first connecting lobe and the second connecting lobe connect the upper lobe and the lower lobe, respectively; The upper lobe, the lower lobe, the first connecting lobe, and the second connecting lobe surround each other to form a liquid channel; the liquid channel includes an inlet and an outlet. The lower plane of the upper lobe and the upper plane of the lower lobe are inclined to each other; the opening on the side with the larger cross-section of the liquid channel is used as the liquid inlet; the opening on the side with the smaller cross-section of the liquid channel is used as the liquid outlet; The upper lobe, the lower lobe, the first connecting lobe, and the second connecting lobe are all fixed to the side wall of the valve body; the liquid inlet is connected to and communicates with the opening; When the water pressure inside the duckbill valve increases, the outlet opens; when the water pressure inside the duckbill valve decreases, the outlet closes.

2. The duckbill valve for a breast pump as described in claim 1, characterized in that, The cross-section of the groove gradually increases from top to bottom.

Images