Air return valve and feeding bottle

Abstract

The air return valve comprises a soft rubber mat body, the middle of the soft rubber mat body is sunken downwards to form a valve plate part, the top face of the valve plate part is a cavity sunken downwards, the bottom face of the valve plate part is a boss, a through gap is formed in the middle of the boss, the outer side of the boss extends out of an annular clamping hook, and the front end of the soft rubber mat body extends out of a plugging part. The top face of the plugging part extends upwards to form a cylindrical plug, the outer diameter size of the cylindrical plug is matched with the inner diameter size of the upper portion of the cavity, and the cylindrical plug is plugged into the upper portion of the cavity to seal the cavity in an interference fit mode after the plugging part is turned inwards. The soft rubber mat further comprises a bottle body and a screw cap, a silica gel nipple is arranged on the screw cap, a mounting hole is formed in the bottom surface of the bottle body, and the bottom surface of the valve plate part on the soft rubber mat body penetrates through the mounting hole from bottom to top and is clamped on the upper surface of the bottom of the bottle body through an annular clamping hook for positioning. The feeding bottle can solve the problem that negative pressure is generated due to thermal expansion and cold contraction of the feeding bottle, and meanwhile hot water can be prevented from entering the feeding bottle when the feeding bottle is heated.

Description

Technical Field

[0001] The utility model relates to a daily necessity, in particular to a backflow valve and a feeding bottle. Background Art

[0002] Feeding bottles are common articles in people's daily life, and families with babies will be equipped with feeding bottles. Due to thermal expansion and contraction, negative pressure will be generated inside the existing feeding bottles, making them difficult to open when the lid is removed. To balance the negative pressure problem, a backflow valve is often set at the nipple to allow air to enter when there is negative pressure inside the feeding bottle. Although this can solve the negative pressure problem, when used by infants, it is easy to inhale air bubbles and cause flatulence, and the milk will also be oxidized when the air bubbles pass through the milk, resulting in nutrient loss. Although setting a silicone backflow plug at the bottom of the bottle can solve the above problems, when heating the milk in the bottle, hot water easily enters the inside of the bottle through the backflow valve. Summary of the Utility Model

[0003] In view of the above problems, the utility model aims to provide a backflow valve and a feeding bottle, which can solve the problem of negative pressure caused by thermal expansion and contraction of the feeding bottle, and at the same time can prevent hot water from entering the inside of the bottle when heating the milk in the bottle.

[0004] The technical solution of the utility model is a backflow valve, which is characterized in that: it includes a soft rubber pad body, a valve piece part is formed by downward depression in the middle of the soft rubber pad body, the top surface of the valve piece part is a downwardly concave cavity, the bottom surface of the valve piece part is a convex platform, a through gap is opened in the middle of the convex platform, an annular hook extends out of the outside of the convex platform, a sealing part extends outwards at the front end of the soft rubber pad body, a cylindrical plug extends upwards from the top surface of the sealing part, the outer diameter dimension of the cylindrical plug is adapted to the inner diameter dimension of the upper part of the cavity, and after inverting the sealing part inwards, the cylindrical plug is inserted into the upper part of the cavity and is hermetically sealed with an interference fit.

[0005] Preferably, the side wall of the convex platform is an inclined surface that is larger at the top and smaller at the bottom, the bottom surface of the convex platform is rectangular, and the gap opened on the convex platform is a straight line.

[0006] Preferably, the soft rubber pad body is made of silicone material.

[0007] A feeding bottle includes a bottle body and a screw cap, a silicone nipple is arranged on the screw cap, and also includes the above-mentioned backflow valve, an installation hole is arranged on the bottom surface of the bottle body, and the bottom surface of the valve piece part on the soft rubber pad body of the backflow valve passes through the installation hole from bottom to top and is positioned by being stuck on the upper surface of the bottom of the bottle body through the annular hook.

[0008] Preferably, a groove for accommodating the sealing part is arranged on the lower surface of the bottom of the bottle body near the installation hole.

[0009] Preferably, a dust-proof cap is connected to the top of the bottle body, and the silicone nipple is located inside the dust-proof cap.

[0010] The utility model can solve the problem of negative pressure caused by the thermal expansion and contraction of the feeding bottle, and can avoid hot water from entering the inside of the feeding bottle when heating milk in the feeding bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural view of the air return valve when it is unfolded in the utility model;

[0012] Figure 2 is Figure 1 a schematic structural view from another perspective;

[0013] Figure 3 is a schematic structural view of the air return valve when it is folded in the utility model;

[0014] Figure 4 is Figure 3 a schematic structural view from another perspective;

[0015] Figure 5 is a schematic structural view of the feeding bottle of the utility model;

[0016] Figure 6 is a schematic structural view of the utility model after removing the dust-proof cover;

[0017] Figure 7 is Figure 6 a sectional view;

[0018] Figure 8 is Figure 7 a schematic structural view when the blocking part in is turned over to block the cavity;

[0019] Wherein: 1 - soft rubber pad body; 2 - valve piece part; 21 - cavity; 22 - boss; 23 - annular hook; 3 - blocking part; 31 - cylindrical plug; 4 - bottle body; 41 - mounting hole; 5 - screw cap; 6 - silicone nipple; 7 - dust-proof cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will further describe the present utility model in detail with reference to the drawings.

[0021] As Figures 1 to 4 shown, the present utility model provides an air return valve, which is characterized in that: it includes a soft rubber pad body 1, a valve piece part 2 is formed by downward depression in the middle of the soft rubber pad body 1, the top surface of the valve piece part 2 is a downward depression cavity 21, the bottom surface of the valve piece part 2 is a boss 22, a through gap is opened in the middle of the boss 22, an annular hook 23 extends out of the outside of the boss 22, a blocking part 3 extends outwards from the front end of the soft rubber pad body 1, a cylindrical plug 31 extends upwards from the top surface of the blocking part 3, the outer diameter size of the cylindrical plug 31 is adapted to the inner diameter size of the upper part of the cavity 21, and after the blocking part 3 is turned inwards, the cylindrical plug 31 is inserted into the upper part of the cavity 21 and is in interference fit to seal the cavity 21.

[0022] On the basis of the above solution, the side wall of the boss 22 is an inclined surface that is larger at the top and smaller at the bottom, the bottom surface of the boss 22 is strip-shaped, and the gap formed on the boss 22 is in the shape of a straight line.

[0023] In addition, the soft rubber pad body 1 is made of silica gel.

[0024] As Figures 5 to 8 shown, the present utility model provides a milk bottle, which includes a bottle body 4 and a screw cap 5. A silica gel nipple 6 is provided on the screw cap 5. An installation hole 41 is provided on the bottom surface of the bottle body 4. The above-mentioned air return valve is also included. The air return valve includes a soft rubber pad body 1. A valve piece portion 2 is formed by the middle part of the soft rubber pad body 1 sinking downward. The top surface of the valve piece portion 2 is a cavity 21 that sinks downward. The bottom surface of the valve piece portion 2 is a boss 22. A through gap is provided in the middle of the boss 22. An annular hook 23 extends out of the outside of the boss 22. A sealing portion 3 extends outward from the front end of the soft rubber pad body 1. A cylindrical plug 31 extends upward from the top surface of the sealing portion 3. The outer diameter dimension of the cylindrical plug 31 is adapted to the inner diameter dimension of the upper part of the cavity 21. After the sealing portion 3 is turned inward, the cylindrical plug 31 is inserted into the upper part of the cavity 21 and is in interference fit to seal the cavity 21; the bottom surface of the valve piece portion 2 on the above-mentioned soft rubber pad body 1 passes through the installation hole 41 from bottom to top and is positioned by being stuck on the upper surface of the bottom of the bottle body 4 through the annular hook 23.

[0025] In addition, a groove for accommodating the sealing portion 3 is provided on the lower surface of the bottom of the bottle body 4 near the installation hole 41.

[0026] In addition, a dust-proof cover 7 is connected to the top of the bottle body 4, and the silica gel nipple 6 is located inside the dust-proof cover 7.

[0027] During normal use, as Figure 7 shown, when the gap in the middle of the boss 22 generates negative pressure in the bottle, air can enter to balance the internal and external pressures. When it is necessary to heat the milk, after the sealing portion 3 is turned inward, the cylindrical plug 31 is inserted into the upper part of the cavity 21 and is in interference fit to seal the cavity 21, and then the whole milk bottle is put into hot water to heat the milk, which can effectively prevent hot water from entering the milk bottle.

[0028] The above is only a preferred embodiment of the present utility model, and does not impose any form of limitation on the utility model. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the present utility model still belongs to the scope of the technical solution of the present utility model.

Claims

1. A gas return valve, characterized in that: It includes a soft rubber pad body (1). A valve piece part (2) is formed by downward depression in the middle of the soft rubber pad body (1). The top surface of the valve piece part (2) is a downwardly depressed cavity (21), and the bottom surface of the valve piece part (2) is a boss (22). A through slit is provided in the middle of the boss (22), and an annular hook (23) extends outward from the outside of the boss (22). A sealing part (3) extends outward from the front end of the soft rubber pad body (1). A cylindrical plug (31) extends upward from the top surface of the sealing part (3). The outer diameter size of the cylindrical plug (31) is adapted to the inner diameter size of the upper part of the cavity (21). After the sealing part (3) is turned inward, the cylindrical plug (31) is inserted into the upper part of the cavity (21) and sealed with the cavity (21) by interference fit.

2. The gas return valve according to claim 1, wherein: The side wall of the boss (22) is an inclined surface that is larger at the top and smaller at the bottom. The bottom surface of the boss (22) is strip-shaped, and the slit provided on the boss (22) is in a shape of a straight line.

3. The gas return valve according to claim 1, characterized in that: The soft rubber pad body (1) is made of silica gel material.

4. A feeding bottle, comprising a bottle body (4) and a screw cap (5), wherein a silicone nipple (6) is provided on the screw cap (5), and is characterized in that: It also includes a backflow valve as described in any one of claims 1 - 3. An installation hole (41) is provided on the bottom surface of the bottle body (4). The bottom surface of the valve piece part (2) on the soft rubber pad body (1) passes through the installation hole (41) from bottom to top and is positioned by being stuck on the upper surface of the bottom of the bottle body (4) through the annular hook (23).

5. A feeding bottle according to claim 4, characterized in that: A groove for accommodating the sealing part (3) is provided on the lower surface of the bottom of the bottle body (4) near the installation hole (41).

6. The feeding bottle according to claim 4, wherein: The top of the bottle body (4) is connected to a dust-proof cap (7), and the silica gel nipple (6) is located inside the dust-proof cap (7).

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