Aseptically package ready-to-use storage bottle

Abstract

The application discloses a sterile-packaged instant storage bottle, which comprises a bottle body and a bottle cap assembly. The bottle cap assembly comprises an upper bottle cap, a middle bottle cap and a lower bottle cap. The upper bottle cap is screwed on the middle bottle cap. The middle bottle cap is internally provided with a dosing bin. The lower surface of the dosing bin is provided with a breakable first sealing layer. A spike assembly is arranged between the upper bottle cap and the middle bottle cap. The spike assembly and the inner side wall of the middle bottle cap are movably connected through a limiting member. The spike assembly and the upper bottle cap are movably connected through a guide member. The middle bottle cap is crimped on the lower bottle cap and can rotate circumferentially relative to the lower bottle cap. The lower bottle cap is crimped on the bottle mouth of the bottle body. The inner side wall of the lower bottle cap is provided with a second sealing layer which is tightly attached to the lower surface of the first sealing layer. Under the action of the limiting member and the guide member, the spike assembly can move towards the bottle mouth and synchronously break the first sealing layer and the second sealing layer with the rotation of the upper bottle cap. The storage bottle can be sterile assembled, effectively prevents the bottle from being polluted and is convenient to use.

Description

Technical Field

[0001] This invention belongs to the field of material packaging technology, and in particular relates to a ready-to-use storage bottle that can be aseptically sealed. Background Technology

[0002] For some powdered and liquid materials, they need to be sealed during transportation and storage, and then mixed with a corresponding solution before use. These materials involve various fields such as food, beverages, biopharmaceuticals, and chemicals. Taking the beverage industry as an example, there are many different ready-to-drink beverages on the market. These beverages typically have flavorings filled into a container-like cap, which is then mixed with water inside the bottle to create a ready-to-drink beverage. For example, the ready-to-use bottle in Chinese patent number "202321450871.4" includes a cap body and a bottle body. The cap body has a built-in dispensing compartment. There is a gap between the outer wall of the dispensing compartment and the inner wall of the cap, and the surface of the dispensing compartment facing the bottle body is a ruptureable seal. The bottle body includes a bottle neck, and the cap body is connected to the bottle body through the bottle neck. A conical piercing assembly is movably disposed on the inner wall of the bottle neck through a limiting member. The conical piercing assembly is located below the dispensing compartment and is threadedly connected to the cap body. When the cap body is closed on the bottle body, under the limiting action of the limiting member, the conical piercing assembly can move towards the dispensing compartment and pierce the seal as the cap body rotates. The limiting member prevents the conical piercing assembly from moving downwards again as the cap is closed. The conical piercing assembly is one of a conical needle or a conical guide tube.

[0003] However, the above structure has the following problems: during the process of assembling the bottle cap to the bottle body, the bottle mouth is always open, and the liquid inside the bottle is in direct contact with the air. It will still be contaminated by bacteria, dust and other fine pollutants in the environment, making it difficult to guarantee the hygiene of the liquid inside the bottle. Summary of the Invention The purpose of this invention is to overcome the shortcomings of the prior art and provide a ready-to-use storage bottle that can avoid contamination of the liquid inside the bottle during the assembly of the bottle body and the bottle cap, thereby achieving aseptic sealing.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a pre-filled storage bottle that can be aseptically sealed, comprising a bottle body and a bottle cap assembly, characterized in that the bottle cap assembly comprises an upper bottle cap, a middle bottle cap, and a lower bottle cap, the upper bottle cap being screwed onto the middle bottle cap, the middle bottle cap having a built-in dispensing compartment, the lower surface of the dispensing compartment being a breakable first sealing layer, a conical spike assembly being provided between the upper bottle cap and the middle bottle cap, the conical spike assembly being movably connected to the inner sidewall of the middle bottle cap by a limiting member, the conical spike assembly and the middle bottle cap being movably connected by a limiting member. The upper bottle caps are movably connected by a guide member. The middle bottle cap presses against the lower bottle cap and can rotate circumferentially relative to the lower bottle cap. The lower bottle cap presses against the bottle mouth of the bottle body, and a second sealing layer for sealing the bottle mouth and which can be broken is provided on the inner side wall of the lower bottle cap. The second sealing layer is closely attached to the lower surface of the first sealing layer. Under the action of the limiting member and the guide member, the cone-piercing assembly can move towards the bottle mouth as the upper bottle cap rotates and open, and simultaneously pierce the first sealing layer and the second sealing layer.

[0005] During assembly, the bottle seals the ingredients through a first sealing layer and the liquid through a second sealing layer. The final sealing is achieved by pressing the middle cap onto the lower cap, ensuring aseptic sealing of both the ingredients and the liquid. In use, as the upper cap rotates, the cone-shaped piercing assembly moves downwards under the combined action of the limiting and guiding components, simultaneously piercing both sealing layers and releasing the ingredients from the dispensing chamber into the liquid within the bottle, enabling immediate preparation of both ingredients and liquid.

[0006] In the above-mentioned aseptically sealable ready-to-use storage bottle, the limiting member includes a mutually cooperating limiting groove and a limiting protrusion. The limiting groove is formed on the outer side wall of the cone-shaped assembly, and the limiting protrusion is formed on the inner side wall of the bottle cap.

[0007] In the above-mentioned aseptically sealable ready-to-use storage bottle, the limiting groove is a strip-shaped groove formed vertically on the inner sidewall of the cone-shaped component, the lower end of the limiting groove extends to the middle of the bottle cap and forms a downward opening; the limiting protrusion is a protrusion formed in the middle of the inner sidewall of the bottle cap, and the protrusion can be inserted into the limiting groove through the opening.

[0008] In the aforementioned aseptically sealable ready-to-use storage bottle, at least one side of the opening is provided with a first guide surface.

[0009] In the aforementioned aseptically sealable ready-to-use storage bottle, the upper end of the limiting slot is sealed by an annular ring formed on the outer periphery of the cone-shaped component.

[0010] In the above-mentioned aseptically sealable ready-to-use storage bottle, the guiding component includes an arc-shaped guide plate and a guide block. The arc-shaped guide plate is disposed inside the upper bottle cap and forms an annular structure. The arc-shaped guide plate has a second guiding surface from top to bottom along its arc direction. The guide block is disposed on the inner side wall of the cone-shaped component. The upper part of the guide block has a third guiding surface that cooperates with the second guiding surface.

[0011] In the aforementioned aseptically sealable ready-to-use storage bottle, the lower bottle cap has an inverted U-shaped cross-section, including an inner cylinder, an outer cylinder, and a connecting block. The connecting block connects the upper ends of the inner cylinder and the outer cylinder as a whole. The second sealing layer is connected to the bottom end of the inner cylinder. The upper part of the inner wall of the outer cylinder is provided with an internal thread, and the lower part of the inner wall of the outer cylinder is provided with a first positioning ring. The upper part of the outer side wall of the bottle mouth is provided with an external thread that is screwed into the internal thread, and the lower part is provided with a second positioning ring that cooperates with the first positioning ring. When the lower bottle cap is fitted onto the bottle mouth, the second positioning ring is located above the first positioning ring.

[0012] In the aforementioned aseptically sealable ready-to-use storage bottle, the lower part of the middle bottle cap includes an outer shell and an inner shell. The outer wall of the inner shell abuts against the inner wall of the inner cylinder. The inner wall of the outer shell is provided with a third positioning ring, and the outer wall of the outer cylinder is provided with a fourth positioning ring that cooperates with the third positioning ring. When the middle bottle cap is fitted onto the lower bottle cap, the third positioning ring is located below the fourth positioning ring. A sealing ring is provided between the middle bottle cap and the lower bottle cap.

[0013] In the above-mentioned aseptically sealable ready-to-use storage bottle, the lower end of the upper bottle cap is provided with an anti-theft ring, and the anti-theft ring and the upper bottle cap are connected by several connecting bridges.

[0014] In the above-mentioned aseptically sealable ready-to-use storage bottle, the outer periphery of the upper bottle cap is provided with several anti-slip concave surfaces, which are evenly arranged circumferentially along the outer periphery of the upper bottle cap. The outer periphery of the middle bottle cap is provided with several anti-slip strips, which are evenly arranged circumferentially along the outer periphery of the outer shell.

[0015] Compared with existing technologies, the pre-filled storage bottle with aseptic sealing achieves aseptic assembly by sealing both the ingredients and liquid before sealing the cap assembly and bottle body. When in use, simply unscrewing the top cap simultaneously pierces both sealing layers, and then rotating the center cap causes both sealing layers to break open simultaneously into an arc-shaped discharge port, greatly increasing the discharge port area and making the dispensing speed of the ingredient compartment faster and more thorough. While ensuring the hygiene of the contents of the bottle, it also meets the convenience of use. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural diagram of a ready-to-use storage bottle that can be aseptically sealed.

[0017] Figure 2 This is a schematic diagram of the exploded structure of a pre-packaged storage bottle that can be aseptically sealed.

[0018] In the diagram, 1. Bottle body; 1a. Bottle mouth; 1a1. External thread; 1a2. Second positioning ring; 2. Upper bottle cap; 2a. Anti-slip concave surface; 3. Middle bottle cap; 3a. Outer shell; 3a1. Third positioning ring; 3a2. Anti-slip strip; 3b. Inner shell; 4. Lower bottle cap; 4a. Inner cylinder; 4b. Outer cylinder; 4b1. Internal thread; 4b2. First positioning ring; 4b3. Fourth positioning ring; 4c. Connecting block; 5. Ingredient hopper; 6. 7. First sealing layer; 8. Conical spike assembly; 9. Conical spike cylinder; 10. Conical spike unit; 11. Limiting component; 2. Limiting slot; 3. Limiting protrusion; 4. Opening; 5. First guide surface; 6. Annular ring; 7. Guide component; 8. Arc-shaped guide plate; 9. A1. Second guide surface; 9. Guide block; 9. B1. Third guide surface; 10. Second sealing layer; 11. Sealing ring; 12. Anti-theft ring; 12. Connecting bridge. Detailed Implementation

[0019] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0021] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] like Figure 1 and Figure 2 As shown, the present invention provides a pre-packaged storage bottle that can be aseptically sealed. The storage bottle includes two parts: a bottle body 1 and a cap assembly. It should be noted that the bottle body 1 has a bottle opening 1a at the upper end. The bottle body 1 can be made of materials such as glass or rigid plastic, or it can be made of materials that can be deformed by compression or are inherently soft and deformable.

[0024] The bottle cap assembly includes an upper bottle cap 2, a middle bottle cap 3, and a lower bottle cap 4. The upper bottle cap 2 is screwed onto the middle bottle cap 3. The middle bottle cap 3 has a built-in ingredient compartment 5, and the lower surface of the ingredient compartment 5 is a first seal layer 6 that can be broken. A conical piercing assembly 7 is provided between the upper bottle cap 2 and the middle bottle cap 3. The conical piercing assembly 7 and the inner wall of the middle bottle cap 3 are movably connected by a limiting member 8. The conical piercing assembly 7 and the upper bottle cap 2 are movably connected by a guide member 9. The middle bottle cap 3 is pressed onto the lower bottle cap 4 and can rotate circumferentially relative to the lower bottle cap 4. The lower bottle cap 4 is pressed onto the bottle mouth 1a, and the inner wall of the lower bottle cap 4 is provided with a second seal layer 10 for sealing the bottle mouth 1a that can be broken. The second seal layer 10 is in close contact with the lower surface of the first seal layer 6. Under the action of the limiting member 8 and the guide member 9, the conical piercing assembly 7 can move toward the bottle mouth 1a as the upper bottle cap 2 rotates and opens, and simultaneously pierce the first seal layer 6 and the second seal layer 10. The piercing assembly 7 includes a piercing cylinder 7a and a piercing unit 7b, wherein the piercing cylinder 7a is a hollow cylindrical structure, and the piercing unit 7b is located at the bottom of the piercing cylinder 7a. It should be noted that there is some space at the bottom of the piercing cylinder 7a where the piercing unit 7b is not placed. This is to prevent the first sealing layer 6 and the second sealing layer 10 from being completely cut off when the bottle cap 3 is rotated, thus preventing the first sealing layer 6 and the second sealing layer 10 from falling into the bottle body 1.

[0025] As an optional implementation, the limiting member 8 includes a mutually cooperating limiting groove 8a and a limiting protrusion 8b. The limiting groove 8a is formed on the outer side wall of the conical piercing assembly 7, and the limiting protrusion 8b is formed on the inner side wall of the bottle cap 3. The limiting groove 8a is a vertically formed strip-shaped groove on the inner side wall of the conical piercing assembly 7. The lower end of the limiting groove 8a extends to the middle of the bottle cap 3 and forms a downward opening 8c. At least one side of the opening 8c is provided with a first guide surface 8d. The upper end of the limiting groove 8a is sealed by an annular ring 8e formed on the outer periphery of the conical piercing assembly 7. The limiting protrusion 8b is a protrusion formed in the middle of the inner side wall of the bottle cap 3. The protrusion can be inserted into the limiting groove 8a through the opening 8c. It should be noted that there are at least two limiting grooves 8a, which are evenly distributed along the outer side wall of the conical piercing assembly 7. The number of limiting protrusions 8b is the same as that of the limiting grooves 8a, and they are arranged in a one-to-one correspondence.

[0026] The guide component 9 includes an arc-shaped guide plate 9a and a guide block 9b. The arc-shaped guide plate 9a is disposed inside the upper bottle cap 2 and forms a ring structure. The arc-shaped guide plate 9a has a second guide surface 9a1 from top to bottom along its arc direction. The guide block 9b is disposed on the inner side wall of the cone-shaped component 7. The upper part of the guide block 9b has a third guide surface 9b1 that cooperates with the second guide surface 9a1.

[0027] As an optional implementation, the lower bottle cap 4 has an inverted U-shaped cross-section, including an inner cylinder 4a, an outer cylinder 4b, and a connecting block 4c. The connecting block 4c connects the upper ends of the inner cylinder 4a and the outer cylinder 4b into one unit. The second sealing layer 10 is connected to the bottom end of the inner cylinder 4a. The upper part of the inner wall of the outer cylinder 4b is provided with an internal thread 4b1, and the lower part of the inner wall of the outer cylinder 4b is provided with a first positioning ring 4b2. The upper part of the outer wall of the bottle mouth 1a is provided with an external thread 1a1 that is screwed into the internal thread 4b1, and the lower part of the outer wall of the bottle mouth 1a is provided with a second positioning ring 1a2 that cooperates with the first positioning ring 4b2. When the lower bottle cap 4 is fitted onto the bottle mouth 1a, the second positioning ring 1a2 is located above the first positioning ring 4b2. The lower part of the bottle cap 3 includes an outer shell 3a and an inner shell 3b. The outer wall of the inner shell 3b abuts against the inner wall of the inner cylinder 4a. The inner wall of the outer shell 3a is provided with a third positioning ring 3a1, and the outer wall of the outer cylinder 4b is provided with a fourth positioning ring 4b3 that cooperates with the third positioning ring 3a1. When the bottle cap 3 is fitted onto the lower bottle cap 4, the third positioning ring 3a1 is located below the fourth positioning ring 4b3. A sealing ring 11 is provided between the bottle cap 3 and the lower bottle cap 4. Several anti-slip strips 3a2 are vertically arranged on the outer periphery of the outer shell 3a of the bottle cap 3. The anti-slip strips 3a2 are evenly arranged circumferentially along the outer periphery of the outer shell 3a.

[0028] As an optional implementation, the outer periphery of the upper bottle cap 2 is provided with a plurality of anti-slip concave surfaces 2a, which are evenly arranged circumferentially along the outer periphery of the upper bottle cap 2. This facilitates the unscrewing of the upper cap and improves the comfort and convenience of use.

[0029] As an optional implementation, an anti-theft ring 12 is provided at the lower end of the upper bottle cap 2, and the anti-theft ring 12 and the upper bottle cap 2 are connected by several connecting bridges 12a. Whether the anti-theft ring 12 and the connecting bridges 12a at the bottom of the upper cap are broken can be used to determine whether the two sealing layers have been broken and whether the ingredient hopper 5 has been filled, thereby ensuring the hygiene and safety of the contents of the bottle.

[0030] During assembly, the contents of this storage bottle are sealed by the first sealing layer 6 and the liquid by the second sealing layer 10. The final sealing is completed by pressing the middle cap 3 onto the lower cap 4, achieving aseptic sealing of the contents and liquid through the first sealing layer 6 and the second sealing layer 10. In use, rotating the upper cap 2 causes the arc-shaped guide plate 9a to press against the guide block 9b, causing it to slide obliquely downwards towards the cone-shaped piercing cylinder 7a. Simultaneously, the limiting groove 8a restricts the circumferential rotation of the cone-shaped piercing cylinder 7a, forcing it to move downwards, allowing the cone-shaped piercing unit 7b to simultaneously pierce the first sealing layer 6 and the second sealing layer 10. Subsequently, by rotating the bottle cap 3, the conical piercing unit 7b rotates circumferentially, thereby simultaneously drawing arc-shaped discharge ports for the first sealing layer 6 and the second sealing layer 10. This significantly increases the area of ​​the discharge ports, allowing the ingredients in the mixing chamber 5 to fall into the bottle body 1 more quickly and mix or dissolve with the liquid ingredients inside the bottle, achieving ready-to-use upon opening. It is understood that the mixing chamber 5 is filled with a certain amount of powdered ingredients (of course, it could also be other forms of ingredients, such as liquids).

[0031] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pre-filled storage bottle that can be aseptically sealed, comprising a bottle body (1) and a cap assembly, characterized in that, The bottle cap assembly includes an upper bottle cap (2), a middle bottle cap (3), and a lower bottle cap (4). The upper bottle cap (2) is screwed onto the middle bottle cap (3). The middle bottle cap (3) has a built-in ingredient compartment (5). The lower surface of the ingredient compartment (5) is a breakable first sealing layer (6). A cone-shaped piercing assembly (7) is provided between the upper bottle cap (2) and the middle bottle cap (3). The cone-shaped piercing assembly (7) and the inner wall of the middle bottle cap (3) are movably connected by a limiting member (8). The cone-shaped piercing assembly (7) and the upper bottle cap (2) are movably connected by a guide member (9). The middle bottle cap (3) is pressed against the upper bottle cap. The lower bottle cap (4) is on the bottle mouth (1a) of the bottle body (1) and can rotate circumferentially relative to the lower bottle cap (4). The lower bottle cap (4) is pressed against the bottle mouth (1a) of the bottle body (1). The inner side wall of the lower bottle cap (4) is provided with a second sealing layer (10) for sealing the bottle mouth (1a) and can be broken. The second sealing layer (10) is in close contact with the lower surface of the first sealing layer (6). Under the action of the limiting member (8) and the guiding member (9), the cone piercing assembly (7) can move toward the bottle mouth (1a) as the upper bottle cap (2) rotates and open, and simultaneously pierce the first sealing layer (6) and the second sealing layer (10).

2. The ready-to-use storage bottle that can be aseptically sealed according to claim 1, characterized in that, The limiting member (8) includes a limiting groove (8a) and a limiting protrusion (8b) that cooperate with each other. The limiting groove (8a) is formed on the outer side wall of the cone-shaped component (7), and the limiting protrusion (8b) is formed on the inner side wall of the bottle cap (3).

3. A pre-filled storage bottle that can be aseptically sealed according to claim 2, characterized in that, The limiting groove (8a) is a strip-shaped groove formed vertically on the inner sidewall of the cone-shaped component (7). The lower end of the limiting groove (8a) extends to the middle of the bottle cap (3) and forms a downward opening (8c). The limiting protrusion (8b) is a protrusion formed in the middle of the inner sidewall of the bottle cap (3). The protrusion can be inserted into the limiting groove (8a) through the opening (8c).

4. A pre-filled storage bottle that can be aseptically sealed according to claim 3, characterized in that, At least one side of the opening (8c) is provided with a first guide surface (8d).

5. A pre-filled storage bottle that can be aseptically sealed according to claim 2, 3, or 4, characterized in that, The upper end of the limiting slot (8a) is sealed by an annular ring (8e) formed on the outer periphery of the cone-shaped component (7).

6. A pre-filled storage bottle capable of aseptic sealing according to any one of claims 1-4, characterized in that, The guide member (9) includes an arc-shaped guide plate (9a) and a guide block (9b). The arc-shaped guide plate (9a) is disposed inside the upper bottle cap (2) and forms an annular structure. The arc-shaped guide plate (9a) has a second guide surface (9a1) from top to bottom along its arc direction. The guide block (9b) is disposed on the inner side wall of the cone-shaped component (7). The upper part of the guide block (9b) has a third guide surface (9b1) that cooperates with the second guide surface (9a1).

7. A pre-filled storage bottle that can be aseptically sealed according to any one of claims 1-4, characterized in that, The lower bottle cap (4) has an inverted U-shaped cross section, including an inner cylinder (4a), an outer cylinder (4b), and a connecting block (4c). The connecting block (4c) connects the upper ends of the inner cylinder (4a) and the outer cylinder (4b) into one piece. The second sealing layer (10) is connected to the bottom end of the inner cylinder (4a). The upper part of the inner wall of the outer cylinder (4b) is provided with an internal thread (4b1), and the lower part of the inner wall of the outer cylinder (4b) is provided with a first positioning ring (4b2). The upper part of the outer wall of the bottle mouth (1a) is provided with an external thread (1a1) that is screwed into the internal thread (4b1). The lower part of the outer wall of the bottle mouth (1a) is provided with a second positioning ring (1a2) that cooperates with the first positioning ring (4b2). When the lower bottle cap (4) is fitted onto the bottle mouth (1a), the second positioning ring (1a2) is located above the first positioning ring (4b2).

8. A pre-filled storage bottle that can be aseptically sealed according to claim 7, characterized in that, The lower part of the middle bottle cap (3) includes an outer shell (3a) and an inner shell (3b). The outer wall of the inner shell (3b) abuts against the inner wall of the inner cylinder (4a). The inner wall of the outer shell (3a) is provided with a third positioning ring (3a1). The outer wall of the outer cylinder (4b) is provided with a fourth positioning ring (4b3) that cooperates with the third positioning ring (3a1). When the middle bottle cap (3) is fitted onto the lower bottle cap (4), the third positioning ring (3a1) is located below the fourth positioning ring (4b3). A sealing ring (11) is provided between the middle bottle cap (3) and the lower bottle cap (4).

9. A pre-filled storage bottle that can be aseptically sealed according to any one of claims 1-4, characterized in that, The lower end of the upper bottle cap (2) is provided with an anti-theft ring (12), and the anti-theft ring (12) and the upper bottle cap (2) are connected by several connecting bridges (12a).

10. A pre-filled storage bottle that can be aseptically sealed according to any one of claims 1-4, characterized in that, The outer periphery of the upper bottle cap (2) is provided with several anti-slip concave surfaces (2a), which are evenly arranged circumferentially along the outer periphery of the upper bottle cap (2). The outer periphery of the outer shell (3a) of the middle bottle cap (3) is provided with several anti-slip strips (3a2), which are evenly arranged circumferentially along the outer periphery of the outer shell (3a).

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