Disinfection methods for bottle caps, drinking bottles and bottle caps

Abstract

The application discloses a bottle cap with a first state and a second state, comprising: a cap base; a suction nozzle arranged on the cap base and comprising an outflow channel; an outer cap comprising a cap body and a protrusion, in the first state, the outer cap surrounds the suction nozzle and the outer cap separates the suction nozzle from the external environment from one side of the suction nozzle, in the second state, the suction nozzle is exposed to the external environment; a valve body comprising an elastic member, the elastic member separates the outflow channel into a first channel and a second channel on both sides of the outflow channel; in the second state, when the pressure difference on both sides of the elastic member is less than a first threshold value, the elastic member separates the outflow channel so that the first channel and the second channel are not communicated, when the pressure difference on both sides of the elastic member is greater than the first threshold value, the elastic member removes the separation of the outflow channel and the elastic force of the elastic member makes the elastic member tend to restore the separation of the outflow channel; in the first state, the protrusion applies force to the elastic member to make the elastic member deform and the elastic member removes the separation of the outflow channel.

Description

Technical Field

[0001] This invention relates to the field of bottle cap disinfection technology, and particularly to a bottle cap, a drinking bottle, and a bottle cap disinfection method. Background Technology

[0002] To prevent external contaminants from entering the bottle during consumption, some bottle caps, such as those for sports drinks, incorporate a resilient structure, such as a silicone valve, placed within the spout's flow channel. This resilient structure deforms to either block or open the flow channel. When drinking, opening the cap and squeezing the bottle forces the beverage onto the resilient structure, causing it to deform and open the channel, allowing the beverage to flow out. When not in use, the resilient structure, under its elastic force, blocks the flow channel, thus preventing external contaminants from entering.

[0003] In some products with high hygiene requirements, bottle caps need to be sterilized before being assembled into the drinking bottle. However, in existing drinking bottles with elastic structures such as silicone valves, these structures are sealed during sterilization. The silicone valves and other elastic structures isolate the beverage flow channel into two disconnected parts. This isolation creates blind spots in the sterilization process inside the cap, preventing the gaseous or liquid media used for sterilization from entering the channel and achieving thorough sterilization. This can lead to microbial residue and other potential health risks, ultimately affecting the hygiene, safety, and shelf life of the beverage. Summary of the Invention

[0004] The purpose of this invention is to provide a bottle cap that can be more thoroughly disinfected during sterilization.

[0005] This invention discloses a bottle cap for a drinking bottle, having a first state and a second state, comprising:

[0006] A cap holder is used to connect the neck of a drinking bottle;

[0007] A spout, disposed on the cap, includes an outlet channel for liquid to flow out of the drinking bottle;

[0008] The outer cover includes a cover body and a protrusion located in the middle of the cover body. In a first state, the outer cover is located in a first position relative to the cover seat, the outer cover surrounds the nozzle and the outer cover isolates the nozzle from the external environment from the side surrounding the nozzle. In a second state, the outer cover is located in a second position relative to the cover seat, which is different from the first position, and the nozzle is exposed to the external environment.

[0009] The valve body includes an elastic element that divides the outflow channel into a first channel and a second channel located on both sides thereon. In a second state, when the pressure difference between the two sides of the elastic element is less than a first threshold, the elastic element blocks the outflow channel so that the first channel and the second channel are not connected; when the pressure difference between the two sides of the elastic element is greater than the first threshold, the elastic element releases the blockage of the outflow channel and the elastic force of the elastic element causes the elastic element to tend to restore the blockage of the outflow channel. In a first state, the protrusion applies force to the elastic element to deform the elastic element, and the elastic element releases the blockage of the outflow channel.

[0010] In some embodiments, the elastic member includes a plurality of elastic portions distributed circumferentially, wherein in a first state, the protrusion passes through the middle portion of the elastic member and the plurality of elastic portions are separated from each other.

[0011] In some embodiments, the cross-sectional dimension of the first end of the protrusion connected to the cover is larger than the cross-sectional dimension of its second end relative to the first end and away from the cover. In a first state, the first end of the protrusion is inserted into the outflow channel and is sealed to the outflow channel, and the second end of the protrusion applies force to the elastic element.

[0012] In some embodiments, in a first state, the cross-sectional dimension of the second end of the protrusion gradually decreases in a direction away from the cover and close to the elastic member.

[0013] In some embodiments, the protrusion includes a cylinder fixedly connected to the cover and one or more plates located inside the cylinder and fixedly connected to the inner wall of the cylinder. The plates extend out of the cylinder in a direction away from the cover. In a first state, the ends of the plates away from the cover apply force to the elastic member.

[0014] In some embodiments, the protrusion comprises three plates evenly distributed circumferentially along the cylinder.

[0015] In some embodiments, the mouthpiece includes a contact portion for contacting the drinker's mouth and a non-contact portion in a first state away from the cover relative to the contact portion. The outer cover includes a first surrounding body that surrounds the mouthpiece radially outward and a second surrounding body that surrounds the first surrounding body radially outward. In the first state, the first surrounding body is sealed to the non-contact portion, and the first surrounding body and the cover isolate the mouthpiece from the external environment from one side of the mouthpiece. The second surrounding body is sealed to the cover seat, and the second surrounding body and the cover isolate the first surrounding body from the external environment from one side of the second surrounding body.

[0016] In some embodiments, in a first state, the bottle cap further includes a weak connection portion connecting the outer cap and the cap seat, and the weak connection portion breaks after the first state is switched to a second state.

[0017] In some embodiments, the weak connection portion includes a plurality of weak connection points that break after switching from a first state to a second state, the plurality of weak connection points being located radially outward of the nozzle and spaced circumferentially along the nozzle.

[0018] A second aspect of the present invention discloses a drinking bottle, comprising a bottle body and any one of the described bottle caps, wherein the cap seat is connected to the bottle mouth of the bottle body.

[0019] The third aspect of the present invention discloses a bottle cap disinfection method using any of the described bottle caps. In a first state, the second channel is away from the cap body relative to the first channel. The bottle cap disinfection method includes: placing the bottle cap in the first state and then delivering disinfection fluid to the second channel.

[0020] In some embodiments, the bottle cap disinfection method further includes: using a clamping device to clamp the bottle cap and delivering disinfection fluid to the outer cap from the side of the outer cap away from the nozzle.

[0021] Based on the bottle cap provided by this invention, when disinfecting the bottle cap, the protrusion in the middle of the cap body in the first state can cause the elastic element to deform, thereby releasing the elastic element from the blockage of the fluid channel and keeping the fluid channel connected. Thus, when disinfecting the bottle cap, the disinfecting fluid can enter the cavity between the cap body and the nozzle through the flow channel for disinfection, and the disinfection of the bottle cap can be more comprehensive and thorough.

[0022] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of a drinking bottle with a cap according to an embodiment of the present invention;

[0025] Figure 2 This is a cross-sectional view of the bottle cap in a first state according to another embodiment of the present invention;

[0026] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the bottle cap in its second state.

[0027] Figure 4 This is a schematic diagram of the bottle cap in a second state according to another embodiment of the present invention;

[0028] Figure 5 for Figure 4 The diagram shown is a top view of the bottle cap in its second state.

[0029] Figure 6 for Figure 5 The diagram shows the bottle cap in its second state, viewed from below.

[0030] Figure 7 This is a schematic diagram of the bottle cap during disinfection according to an embodiment of the present invention. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0033] In the description of this invention, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0036] The bottle cap 100 of this embodiment is used for drinking bottles, which include bottles for holding beverages and bottles for holding drinking water. The bottle cap 100 has a first state and a second state, and the bottle cap 100 includes a cap seat 1, a spout 2, an outer cap 3, and a valve body 4.

[0037] like Figure 1 As shown, the cap holder 1 is used to connect to the mouth of the drinking bottle, as in... Figure 1 In the embodiment shown, the cap 1 is installed at the mouth of the bottle body 200 of the drinking bottle by a threaded connection.

[0038] like Figure 2 and Figure 3 As shown, the spout 2 is mounted on the cap 1. The spout 2 includes a flow channel 21 for the liquid to flow out of the drinking bottle. When a consumer drinks the liquid from the drinking bottle, the liquid flows out of the bottle, passes through the flow channel 21, and then flows into the consumer's mouth.

[0039] The outer cap 3 includes a cap body 31 and a protrusion 32 located in the middle of the cap body 31. In a first state, the outer cap 3 is positioned relative to the cap seat 1 in a first position, surrounding the mouthpiece 2 and isolating the mouthpiece 2 from the external environment from the side surrounding it. In a second state, the outer cap 3 is positioned relative to the cap seat 1 in a second position different from the first position, exposing the mouthpiece 2 to the external environment. The first and second states of the cap refer to the state where the cap is not opened and the state where the cap is opened, respectively. After the cap is attached to the bottle body, it is in the first state. When a consumer wants to drink the liquid in the bottle, they need to open the cap, that is, switch the cap from the first state to the second state. Figure 1 and Figure 2 As shown, in the first state, the outer cap 3 isolates the nozzle 2 from the external environment from one side, meaning the outer cap 3 can seal the nozzle 2 from one side. When the cap is attached to the bottle body, the bottle body isolates the nozzle from the external environment from the other side, sealing the nozzle from the other side. Thus, the nozzle is completely isolated from the external environment by the combined action of the outer cap, cap seat, and bottle body, ensuring the nozzle remains in a hygienic environment. Figure 3 As shown, the bottle cap is in the second state. At this time, the outer cap is in another position, the bottle cap is open, and the outer cap does not isolate the mouthpiece from the external environment. The mouthpiece is exposed to the external environment, so the consumer can suck the mouthpiece to drink the liquid in the bottle.

[0040] like Figure 2 , Figure 3 and Figure 5As shown, the valve body 4 includes an elastic element 41, which comprises a silicone valve made of silicone. The elastic element 41 divides the outflow channel 21 into a first channel 211 and a second channel 212 located on both sides thereon. In a second state, when the pressure difference across the elastic element 41 is less than a first threshold, the elastic element 41 blocks the outflow channel 21 so that the first channel 211 and the second channel 212 are not connected. When the pressure difference across the elastic element 41 is greater than the first threshold, the elastic element 41 releases the blockage of the outflow channel 21, and the elastic force of the elastic element 41 causes the elastic element 41 to tend to restore the blockage of the outflow channel 21. In the second state, i.e., when the bottle cap is open, the elastic force of the elastic element will cause it to block the outflow channel. However, when the pressure difference on the elastic element exceeds a first threshold, the elastic force is overcome, the elastic element deforms, and the outflow channel is connected. Specifically, in the case of a drinking bottle, when a consumer drinks the liquid inside, by sucking and / or squeezing the bottle, the liquid flows into the outflow channel and squeezes the elastic element. When the pressure of the liquid is high enough to deform the elastic element, the outflow channel is unblocked. The magnitude of the first threshold is set with reference to the magnitude of the suction force of the consumer when drinking the liquid from the bottle and the magnitude of the force of squeezing the bottle. In the first state, the protrusion 32 applies force to the elastic element 41 to cause the elastic element 41 to deform, and the elastic element 41 releases the blockage of the outflow channel 21. In the first state, when the bottle cap is not open, the protrusion of the bottle cap in this embodiment will squeeze the elastic element 41, causing the elastic element 41 to deform, and the first and second channels of the outflow channel 21 are also connected.

[0041] In this embodiment, when the bottle cap 100 is sterilized before being assembled onto the bottle, the protrusion 32 in the middle of the cap body 31 of the bottle cap 100 in the first state can cause the elastic element 41 to deform, thereby releasing the elastic element 41 from the obstruction of the fluid channel and keeping the fluid channel connected. During sterilization, the sterilizing fluid (such as some disinfecting and sterilizing gases) can flow between the first and second channels to thoroughly sterilize the fluid channel. At the same time, the sterilizing fluid can enter the cavity between the cap body 31 and the nozzle 2 through the flow channel to sterilize the part of the cap body corresponding to the nozzle. The sterilization of the bottle cap 100 can be more comprehensive and thorough, thereby better ensuring that the liquid in the drinking bottle is in a sterile and hygienic environment.

[0042] In some embodiments, such as Figure 2 and Figure 5As shown, the elastic member 41 includes multiple elastic portions 411 distributed circumferentially. In the first state, the protrusion 32 passes through the middle of the elastic member 41, and the multiple elastic portions 411 are separated from each other. In this embodiment, by passing through the middle of the elastic member 41, the protrusion 32 can simultaneously squeeze the multiple elastic portions 411 apart, causing the multiple elastic portions 411 to deform simultaneously and causing the ends of the multiple elastic portions 411 to separate from each other, thereby achieving effective deformation of the elastic member and enabling the fluid channel to quickly and effectively switch between an interrupted state and a connected state. In the embodiment shown in the figure, as Figure 5 As shown, multiple elastic parts 411 are formed by cutting the middle of the silicone sheet using a "+" shaped cutting trajectory.

[0043] In some embodiments, such as Figure 2 As shown, the cross-sectional dimension of the first end of the protrusion 32 connected to the cap 31 is larger than the cross-sectional dimension of its second end, which is farther away from the cap 31 relative to the first end. In the first state, the first end of the protrusion 32 is inserted into the outflow channel 21 and is sealed to the outflow channel 21, while the second end of the protrusion 32 applies force to the elastic member 41. In the first state of this embodiment, the first end of the protrusion is sealed to the outflow channel, which can improve the isolation effect of the outer cap on the mouthpiece and the external environment, thereby helping to further ensure that the liquid in the drinking bottle is in sterile and hygienic conditions. The cross-sectional dimension of the first end of the protrusion is smaller than that of the first end, allowing the protrusion to better perform its sealing connection with the mouthpiece and its application of force to the elastic member, thus performing more functions.

[0044] In some embodiments, such as Figure 2 As shown, in the first state, the cross-sectional dimension of the second end of the protrusion 32 gradually decreases in the direction away from the cover 31 and close to the elastic member 41.

[0045] In some embodiments, such as Figure 2 , Figure 3 and Figure 5 As shown, the protrusion 32 includes a cylinder 321 fixedly connected to the cover 31 and one or more plates 322 located inside the cylinder 321 and fixedly connected to the inner wall of the cylinder 321. The plates 322 extend out of the cylinder 321 in a direction away from the cover 31; that is, a portion of the plates 322 is located within the cylinder 321, and a portion protrudes out of the cylinder along its axial direction. In the first state, the end of the plates 322 away from the cover 31 (i.e., the portion protruding from the cylinder) applies force to the elastic element 41. In this embodiment, the cylinder can be sealed to the suction nozzle, and the plates are used to apply force to the elastic element. The structure is simple and the function is reliable.

[0046] In some embodiments, as shown in the figure, the protrusion 32 includes three plates 322 evenly distributed circumferentially along the cylinder 321. The plate design in this embodiment enables the protrusion to apply force to the elastic element more evenly and reliably in the first state, thereby ensuring effective deformation of the elastic element and effective connectivity of the outflow channel. It also makes the outer cover design more aesthetically pleasing.

[0047] In some embodiments, such as Figure 2 As shown, the mouthpiece 2 includes a contact portion 221 for contacting the drinker's mouth and a non-contact portion 222 that is away from the cover 31 relative to the contact portion 221 in a first state. The outer cover 3 includes a first surrounding body 331 that surrounds the mouthpiece 2 radially outward and a second surrounding body 332 that surrounds the first surrounding body 331 radially outward. In the first state, the first surrounding body 331 is sealed to the non-contact portion 222, and the first surrounding body 331 and the cover 31 isolate the mouthpiece 2 from the external environment from one side. The second surrounding body 332 is sealed to the cover 1, and the second surrounding body 332... Body 332 and cap 31 isolate the first surrounding body 331 from the external environment from one side of the second surrounding body 332. In this embodiment, the sealing connection between the first surrounding body 331 and the non-contact part 222 is achieved through a pressing fit between the first surrounding body 331 and the non-contact part 222. In the embodiment shown in the figure, the outer surface of the non-contact part 222 is a cylindrical surface, and the inner surface of the first surrounding body is a cylindrical surface. In the first state, the first surrounding body and the non-contact part are press-fitted to achieve a sealing connection. Similarly, the sealing connection between the second surrounding body 332 and the cap seat 1 is achieved through a pressing fit between the second surrounding body 332 and the cap seat 1. In the first state of this embodiment, the sealing connection between the first surrounding body 331 and the non-contact part 222 isolates and protects the nozzle from the external environment, and the sealing connection between the second surrounding body 332 and the cap seat 1 further isolates and protects the nozzle, thereby further ensuring that the nozzle is not contaminated by the external environment.

[0048] In some embodiments, such as Figure 2 and Figure 3 As shown, in the first state, the bottle cap 100 also includes a weak connection portion connecting the outer cap 3 and the cap base 1. After switching from the first state to the second state, the weak connection portion breaks. The weak connection portion cannot be restored; that is, after the weak connection portion is damaged when switching from the first state to the second state, it cannot be restored. Therefore, the state of the weak connection portion can be used to determine whether the bottle cap has been used. When applied to a drinking bottle, it can be used to determine whether the drinking bottle is brand new and unopened.

[0049] In some embodiments, as shown in the figure, the weak connection portion includes multiple weak connection points that break after switching from the first state to the second state. These multiple weak connection points are located radially outward of the nozzle 2 and spaced circumferentially along the nozzle 2. By providing multiple weak connection points, this embodiment allows the state of the weak connection portion to be displayed from multiple angles, facilitating consumer observation. It also reduces the amount of destructive force required to break the weak connection portion, making it easier to open.

[0050] In some embodiments, a drinking bottle is also disclosed, including a bottle body 200 and any of the aforementioned bottle caps 100, wherein the cap seat 1 of the bottle cap 100 is connected to the bottle mouth of the bottle body 200.

[0051] In some implementations, a bottle cap disinfection method using any of the above-mentioned bottle caps 100 is also disclosed. In a first state, the second channel 212 is away from the cap body 31 relative to the first channel 211. The bottle cap disinfection method includes: placing the bottle cap 100 in the first state and then delivering disinfection fluid to the second channel 212.

[0052] In some embodiments, the bottle cap disinfection method further includes: clamping the bottle cap 100 using a clamping device 61, and conveying disinfectant fluid from the side of the outer cap 3 away from the nozzle 2 to the outer cap 3. For example... Figure 7 As shown, the clamping device 61 clamps the bottle cap, and then the disinfection device 62 releases disinfection fluid (in the embodiment shown in the figure, disinfection gas) to disinfect the bottle cap.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A bottle cap for use on a drinking bottle, characterized in that, It has a first state and a second state, including: Cap holder (1), used to connect the bottle mouth of a drinking bottle; A spout (2) is provided on the cap (1) and includes an outlet channel for liquid to flow out of the drinking bottle; The outer cover (3) includes a cover body (31) and a protrusion (32) located in the middle of the cover body (31). In a first state, the outer cover (3) is located in a first position relative to the cover seat (1), the outer cover (3) surrounds the mouthpiece (2) and the outer cover (3) isolates the mouthpiece (2) from the external environment from the side surrounding the mouthpiece (2). In a second state, the outer cover (3) is located in a second position relative to the cover seat (1) that is different from the first position, and the mouthpiece (2) is exposed to the external environment. The valve body (4) includes an elastic element (41) that divides the outflow channel into a first channel and a second channel located on both sides thereon. In a second state, when the pressure difference between the two sides of the elastic element (41) is less than a first threshold, the elastic element (41) disconnects the outflow channel so that the first channel and the second channel are not connected. When the pressure difference between the two sides of the elastic element (41) is greater than the first threshold, the elastic element (41) releases the disconnection of the outflow channel and the elastic force of the elastic element (41) causes the elastic element (41) to tend to restore the disconnection of the outflow channel. In a first state, the protrusion (32) applies force to the elastic element (41) to deform the elastic element (41) and the elastic element (41) releases the disconnection of the outflow channel.

2. The bottle cap as described in claim 1, characterized in that, The elastic element (41) includes a plurality of elastic portions (411) distributed circumferentially. In a first state, the protrusion (32) passes through the middle of the elastic element (41), and the plurality of elastic portions (411) are separated from each other.

3. The bottle cap as described in claim 1, characterized in that, The cross-sectional dimension of the first end of the protrusion (32) connected to the cover (31) is larger than the cross-sectional dimension of its second end away from the cover (31) relative to the first end. In the first state, the first end of the protrusion (32) is inserted into the outflow channel and is sealed to the outflow channel, and the second end of the protrusion (32) applies force to the elastic element (41).

4. The bottle cap as described in claim 3, characterized in that, In the first state, the cross-sectional dimension of the second end of the protrusion (32) gradually decreases in the direction away from the cover (31) and close to the elastic member (41).

5. The bottle cap as described in claim 3 or 4, characterized in that, The protrusion (32) includes a cylinder fixedly connected to the cover (31) and one or more plates located inside the cylinder and fixedly connected to the inner wall of the cylinder. The plates extend out of the cylinder in a direction away from the cover (31). In a first state, the end of the plate away from the cover (31) applies force to the elastic member (41).

6. The bottle cap as described in claim 5, characterized in that, The protrusion (32) comprises three plates evenly distributed circumferentially along the cylinder.

7. The bottle cap as described in claim 1, characterized in that, The mouthpiece (2) includes a contact portion for contacting the drinker's mouth and a non-contact portion in a first state that is away from the cover (31) relative to the contact portion. The outer cover (3) includes a first surrounding body that surrounds the mouthpiece (2) radially outward and a second surrounding body that surrounds the first surrounding body radially outward. In the first state, the first surrounding body is sealed to the non-contact portion, and the first surrounding body and the cover (31) isolate the mouthpiece (2) from the external environment from one side of the mouthpiece (2). The second surrounding body is sealed to the cover seat (1), and the second surrounding body and the cover (31) isolate the first surrounding body from the external environment from one side of the second surrounding body.

8. The bottle cap as described in claim 1, characterized in that, In the first state, the bottle cap also includes a weak connection portion connecting the outer cap (3) and the cap seat (1). After switching from the first state to the second state, the weak connection portion breaks.

9. The bottle cap as described in claim 8, characterized in that, The weak connection portion includes multiple weak connection points that break after switching from the first state to the second state. The multiple weak connection points are located on the radially outer side of the nozzle (2) and are spaced apart along the circumferential direction of the nozzle (2).

10. A drinking bottle, characterized in that, It includes a bottle body and a bottle cap as described in any one of claims 1-9, wherein the cap seat (1) of the bottle cap is connected to the bottle mouth of the bottle body.

11. A method for disinfecting bottle caps using the bottle cap as described in any one of claims 1 to 9, characterized in that, In the first state, the second channel is away from the cap (31) relative to the first channel. The cap disinfection method includes: putting the cap in the first state and then delivering disinfection fluid to the second channel.

12. The bottle cap disinfection method as described in claim 11, characterized in that, Also includes: The bottle cap is held by a clamping device, and disinfectant fluid is delivered from the side of the outer cap (3) away from the nozzle (2) to the outer cap (3).

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