A dry powder puncture cap

Abstract

This utility model discloses a dry powder piercing cap, including a lower cap, a base, and an upper cap. The bottom of the upper cap is screwed onto the base, and the bottom of the base is capped onto the lower cap. The base contains a piercing element that can rotate up and down. Multiple cutting blades are arranged circumferentially along the bottom of the piercing element. A first concave groove is formed on the inner side of the top of the lower cap corresponding to the circumference of the piercing element. The sidewall of the base, the top of the lower cap, and the top of the upper cap form a storage chamber for holding dry powder. The piercing element can rotate downwards and pierce the first groove to form a connecting channel for discharging the dry powder contained in the storage chamber into a bottle. The beneficial effects of this utility model are: the first groove structure reduces the difficulty of piercing and cutting the top of the lower cap with the cutting blades; the piercing element pierces and cuts the top of the lower cap, making the operation simple and convenient; by using the top of the lower cap as the bottom of the storage chamber, there is no need to separately manufacture a sealing film, simplifying the manufacturing and sealing process of the sealing film.

Description

Technical Field

[0001] This utility model relates to the field of bottle cap technology, specifically a dry powder puncture cap. Background Technology

[0002] Bottle caps are used to seal bottles, maintaining the airtightness of the product inside and preventing spoilage or leakage. They are a crucial part of food and beverage packaging. In food packaging, solids are often sealed inside the cap for reasons such as improving storage and preservation conditions, better adjusting taste, facilitating mass production, and flexible combination and blending. When needed, the solids are released from the cap to mix with the liquid inside the bottle. Therefore, bottle caps with storage functions have emerged.

[0003] Currently, bottle caps with storage functions have a relatively complex structure. In particular, sealing the bottle body requires an additional sealing film, which involves a separate packaging process, increasing the manufacturing process, time, and cost of bottle caps with storage functions. Utility Model Content

[0004] The purpose of this invention is to provide a dry powder puncture cap to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dry powder puncture cap, comprising a lower cap for connecting to the top opening of a bottle, a base connected above the lower cap, and an upper cap screwed onto the base. Both the lower and upper caps are cylindrical structures with a sealed top and an open bottom. The base is also a cylindrical structure with an open top and an open bottom, and is divided into a first connecting part for connecting to the lower cap, a second connecting part for connecting to the upper cap, and a connecting surface for connecting the first and second connecting parts. The diameter of the first connecting part is larger than the diameter of the second connecting part. The bottom of the upper cap is screwed... The screw cap is mounted on the base, and the bottom of the base is mounted on the lower cover. The base contains a piercing element that can rotate up and down. The piercing element is a cylindrical structure with an open top and an open bottom. Multiple cutting blades are provided around its bottom along its circumference. The multiple cutting blades are distributed in a local area at the bottom of the piercing element. The inner top of the lower cover has a first concave groove around the circumference of the piercing element. The side wall of the base, the top of the lower cover, and the top of the upper cover form a storage chamber for holding dry powder. The piercing element can rotate downward and pierce the first groove to form a connecting channel for discharging the dry powder contained in the storage chamber into the bottle.

[0006] Further preferably, the upper half of the inner wall of the base is provided with several guide ribs along its circumference for the puncture piece to rotate up and down, so as to ensure that the puncture piece can rotate up and down and realize the puncture and cutting functions; both the upper and lower ends of the guide ribs are provided with first limiting blocks for limiting the movement of the puncture piece.

[0007] Further preferably, the outer wall of the puncture member is provided with a plurality of guide protrusions along its circumferential direction to cooperate with the guide ribs and to be used for the vertical rotation of the puncture member; the upper end of the inner wall of the puncture member is provided with a plurality of stops for its rotation and for the downward rotation of the puncture member; the upper end of the inner wall of the puncture member is provided with at least one fourth limiting block for its rotation and for the upward rotation of the puncture member.

[0008] Further preferably, the top inner side of the upper cover is provided with a push block for driving the puncture piece to rotate up and down and cooperating with the stop block. The puncture piece is pushed downward by the push block pushing the stop block. The upper end of the outer wall of the puncture piece is provided with a number of third limit blocks that cooperate with the first limit block. The puncture piece is pushed upward by the push block pushing the third limit blocks.

[0009] Further preferably, the inner wall of the lower cover is provided with a first internal thread that screws onto the bottle body, and the lower end of the lower cover is provided with a first anti-theft ring that connects to the bottle body to achieve an anti-theft effect; the outer wall of the lower cover is evenly provided with a number of first prisms arranged vertically along its circumference, and the inner wall of the first connecting part is provided with a number of second prisms, each of the second prisms being inserted into the gap between two first prisms at a corresponding position, thereby achieving relative rotational limitation between the lower cover and the base, ensuring that the base can drive the lower cover to rotate synchronously.

[0010] In a further preferred embodiment, the top inner side of the lower cover is provided with a first sealing ring and a second sealing ring extending downwards. The first sealing ring is located inside the second sealing ring, and the downward extension length of the first sealing ring is greater than that of the second sealing ring. The first sealing ring and the second sealing ring are respectively engaged on the inner and outer sides of the top opening of the bottle body to ensure the sealing effect of the bottle body.

[0011] In a further preferred embodiment, the top of the lower cover is provided with a third sealing ring extending upward along its edge, the inner side of the connecting surface is provided with a second groove that is recessed upward, the third sealing ring is inserted into the second groove and abuts against the connecting surface, and a fourth sealing ring protruding towards the third sealing ring is provided on one side of the second groove located inside the third sealing ring, so as to ensure the sealing effect of the bottom of the storage chamber.

[0012] Further preferably, the outer wall of the second connecting part is provided with an external thread, and the inner wall of the upper cover is provided with a second internal thread that mates with the external thread. The top inner side of the upper cover is provided with a fifth sealing ring and a sixth sealing ring that extend downwards. The fifth sealing ring is located inside the sixth sealing ring, and the downward extension length of the fifth sealing ring is greater than that of the sixth sealing ring. The fifth sealing ring and the sixth sealing ring are respectively engaged on the inner and outer sides of the top opening of the second connecting part to ensure the sealing effect of the top of the storage chamber. A second anti-theft ring is provided at the bottom of the upper cover to prevent theft.

[0013] Further preferably, the upper inner side of the second connecting part is provided with a first arc-shaped part, and the side of the fifth sealing ring near the second connecting part is provided with a second arc-shaped part that cooperates with the first arc-shaped part. The first arc-shaped part and the second arc-shaped part form a sealing structure, which further improves the sealing effect of the top of the storage chamber.

[0014] Beneficial effects: The dry powder puncture cap of this utility model forms a storage chamber for dry powder by means of the top of the upper cap, the top of the lower cap, and the side wall of the base, which facilitates the storage of dry powder; by setting a first groove on the top of the lower cap corresponding to the position of the puncture piece, the difficulty of the cutting blade puncturing and cutting the top of the lower cap can be reduced; at the same time, by using the top of the lower cap as the bottom of the storage chamber, there is no need to make a separate sealing film, and the production and sealing process of the sealing film can be simplified.

[0015] With the structural design of the inner push block of the upper cover, the upper stop block of the piercing piece, the guide protrusion and the guide rib on the base, it is only necessary to screw the upper cover upward to push the piercing piece downward to pierce and cut the top of the lower cover. The operation is simple and convenient, improving the user experience.

[0016] The lower cap achieves multiple seals to the bottle body through the first sealing ring, the second sealing ring, and the first internal thread; multiple seals to the bottom of the storage chamber are achieved through the third sealing ring, the second groove, and the fourth sealing ring; and multiple seals to the top of the storage chamber are formed through the fifth sealing ring, the sixth sealing ring, the first arc-shaped part, and the second arc-shaped part. This dry powder puncture cap adopts a multi-seal structure for both the bottle body and the dry powder storage chamber, resulting in good sealing performance and effectively ensuring the quality and service life of the dry powder and the liquid inside the bottle.

[0017] The dry powder puncture cap has a clever structural design, and the mixing of dry powder and liquid is simple and easy. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the dry powder puncture cap disclosed in the embodiments of this utility model;

[0019] Figure 2 This is an exploded structural diagram of the dry powder puncture cap disclosed in the embodiment of this utility model.

[0020] Figure 3 This is a schematic diagram of the axial structure of the dry powder puncture cap disclosed in the embodiments of this utility model;

[0021] Figure 4 This is a schematic diagram of the main structure of the dry powder puncture cap disclosed in the embodiment of this utility model;

[0022] Figure 5 This is a cross-sectional view of the lower cover as disclosed in the embodiment of this utility model;

[0023] Figure 6 This is a cross-sectional schematic diagram of the base disclosed in the embodiment of this utility model;

[0024] Figure 7 This is a cross-sectional view of the upper cover disclosed in the embodiment of this utility model;

[0025] Figure 8 This is a schematic diagram of the puncture device disclosed in the embodiment of this utility model.

[0026] Figure Labels

[0027] 1-Lower cover, 11-First sealing ring, 12-Second sealing ring, 13-First internal thread, 14-First anti-theft ring, 15-First groove, 16-Third sealing ring, 17-First prism, 18-First limiting ring, 2-Base, 21-First connecting part, 211-Second prism, 212-Second limiting ring, 213-Second groove, 214-Fourth sealing ring, 22-Second connecting part, 221-External thread, 222-Guide Rib, 223-First arc-shaped part, 224-First limiting block, 225-Third limiting ring, 226-Second limiting block, 23-Connecting surface, 3-Top cover, 31-Second internal thread, 32-Push block, 33-Fifth sealing ring, 331-Second arc-shaped part, 34-Sixth sealing ring, 35-Second anti-theft ring, 4-Piercing part, 41-Cut knife, 42-Stop block, 43-Guide protrusion, 44-Third limiting block, 45-Fourth limiting block. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] like Figure 1-8As shown, a dry powder puncture cap includes a lower cap 1 for connecting to the top opening of a bottle, a base 2 connected above the lower cap 1, and an upper cap 3 screwed onto the base 2. Both the lower cap 1 and the upper cap 3 are cylindrical structures with a sealed top and an open bottom. The base 2 is also a cylindrical structure with an open top and an open bottom, and is divided into a first connecting part 21 for connecting to the lower cap 1, a second connecting part 22 for connecting to the upper cap 3, and a connecting surface 23 for connecting the first connecting part 21 and the second connecting part 22. The diameter of the first connecting part 21 is larger than the diameter of the second connecting part 22. The bottom of the upper cap 3 is screwed onto the base 2. The bottom of the base 2 is placed on the bottom cover 1. The base 2 is provided with a piercing member 4 that can be rotated up and down. The piercing member 4 is a cylindrical structure with an opening at the top and an opening at the bottom. Multiple cutting blades 41 are provided along its circumference at the bottom of the piercing member 4. The multiple cutting blades 41 are distributed in a local area at the bottom of the piercing member 4. The inner side of the top of the bottom cover 1 is provided with a first groove 15 that is concave upwards, corresponding to the circumference of the piercing member 4. The side wall of the base 2, the top of the bottom cover 1, and the top of the top cover 3 form a storage chamber for holding dry powder. The piercing member 4 can rotate downwards and pierce the first groove 15 to form a connecting channel for putting the dry powder in the storage chamber into the bottle.

[0030] In this application, the dry powder puncture cap has a storage chamber for storing and preserving the dry powder, while also extending the shelf life of the liquid inside the bottle. The liquid inside the bottle may contain little or no dry powder to maintain its quality and efficacy. Rotating the upper cap 3 causes the puncture member 4 to rotate downwards, puncturing the first groove 15 on the top of the lower cap 1 and pressing down the punctured portion of the lower cap 1 to form a connecting channel. This allows the dry powder in the storage chamber formed by the side wall of the base 2, the top of the lower cap 1, and the top of the upper cap 3 to be added to the liquid inside the bottle, achieving mixing of the liquid and dry powder. Furthermore, by using the top of the lower cap 1 as the bottom of the storage chamber and simultaneously as a sealing film for the top opening of the bottle, there is no need to separately manufacture a sealing film to seal the top opening of the bottle and the bottom of the storage chamber, simplifying the structure, manufacturing, and sealing process of the sealing film.

[0031] In this application, the lower cover 1 is used to connect with the bottle body and is screwed onto the opening of the bottle body. The base 2 is used to connect the lower cover 1 and the upper cover 3, and the base 2, the lower cover 1, and the upper cover 3 form a storage chamber for storing dry powder, that is, a sealed space enclosed by the side wall of the base 2, the top of the lower cover 1, and the top of the upper cover 3. The first connecting part 21 of the base 2 is sleeved on the lower cover 1 and forms a limit between it and the lower cover 1, ensuring that the base 2 can drive the lower cover 1 to rotate synchronously, so that the lower cover 1 can be unscrewed from the bottle body when the base 2 is rotated. The second connecting part 22 is used to connect with the upper cover 3. By rotating the upper cover 3 relative to the second connecting part 22, the upper cover 3 can not only be opened, i.e., removed, but also the piercing member 4 can be driven to rotate downward relative to the base 2, so that the piercing member 4 can pierce the first groove 15 on the lower cover 1. The bottom of the piercing member 4 is provided with multiple cutting blades 41 along its circumference. The multiple cutting blades 41 are distributed in a local area at the bottom of the piercing member 4, which can pierce and cut the top of the lower cover 1, so that the cut top of the lower cover 1 is still partially connected to the lower cover 1. During the downward rotating piercing process, the cut part of the top of the lower cover 1 will be pressed down and folded, so that the dry powder in the storage chamber can fall smoothly into the bottle below through the connecting channel formed by the cut, so as to achieve the mixing of the dry powder with the liquid in the bottle.

[0032] In this application, the diameter of the first connecting part 21 is larger than that of the second connecting part 22, thereby ensuring that the diameter of the storage chamber formed by the top of the lower cover 1, the second connecting part 22 and the top of the upper cover 3 is not larger than that of the top of the lower cover 1. This reduces the step between the storage chamber and the top opening of the bottle, minimizes the obstruction of dry powder falling into the bottle, ensures that the dry powder in the storage chamber can fall smoothly into the bottle, and reduces the residual dry powder in the storage chamber.

[0033] In this application, the cutting blade 41 is used to pierce and cut the top of the lower cover 1. Specifically, the cutting blade 41 pierces and cuts the first groove 15, which is located on the top of the lower cover 1 and is relatively thinner than other parts, reducing the difficulty for the cutting blade 41 to pierce the top of the lower cover 1. Multiple cutting blades 41 are distributed in a localized area at the bottom of the piercing member 4, ensuring that when the cutting blade 41 pierces and cuts the lower cover 1, from the initial cutting position to the final cutting position, a partial connection remains on the top of the lower cover 1, thus preventing the lower cover 1 from being completely cut off and falling into the liquid inside the bottle.

[0034] Please refer to Figure 6 As shown, in one embodiment of this application, the upper half of the inner wall of the base 2 is provided with a plurality of guide ribs 222 for the puncture piece 4 to rotate up and down along its circumferential direction, and the upper and lower ends of the guide ribs 222 are provided with first limiting blocks 224 for limiting the movement of the puncture piece 4.

[0035] In this embodiment, the guide rib 222 guides the rotation of the piercing member 4 in the opposite direction to the opening direction of the upper cover 3. That is, when the upper cover 3 is rotated, it rotates upward relative to the base 2. At this time, the upper cover 3 drives the piercing member 4 to rotate downward along the guide rib 222, thereby pushing the piercing member 4 to pierce the top of the lower cover 1, which is fixed relative to the base 2. The upper and lower ends of the guide rib 222 are provided with first limiting blocks 224 to limit the upward or downward rotation position of the piercing member 4, ensuring that the piercing member 4 will not separate from the base 2, and ensuring that the piercing member 4 is always inside the base 2 after the cover is opened, so as not to cause the piercing member 4 to separate alone and cause safety hazards.

[0036] Please refer to Figure 8 As shown, further, the outer wall of the puncture member 4 is provided with a plurality of guide protrusions 43 along its circumferential direction, which cooperate with the guide rib 222 and are used for the vertical rotation of the puncture member 4. The upper end of the inner wall of the puncture member 4 is provided with a plurality of stops 42 for its rotation. The upper end of the inner wall of the puncture member 4 is provided with at least one fourth limiting block 45 for its rotation restriction.

[0037] The piercing element 4 rotates vertically by means of the guide protrusion 43 cooperating with the guide rib 22. Specifically, each guide protrusion 43 is located within the upper and lower guide ribs 222, thus limiting and guiding the position of the guide protrusion 43. The stop block 42 protrudes from the inside of the piercing element 4 and is used to push the piercing element 4 to rotate synchronously when the upper cover 3 rotates relative to the base 2. There are at least two stop blocks 42, and this application has three, and the thickness increases as they are closer to the inner wall of the piercing element 4, ensuring that the piercing element 4 receives a strong push when it is pushed to pierce the lower cover 1. The fourth limiting block 45 is used for the reverse rotation of the piercing element 4, and there is at least one of them. When the piercing element 4 is pushed to rotate upward, it does not need to be subjected to too much force.

[0038] Please refer to Figure 7 and Figure 8 As shown, further, the top inner side of the upper cover 3 is provided with a push block 32 for driving the puncture member 4 to rotate up and down and cooperating with the stop block 42, and the upper end of the outer wall of the puncture member 4 is provided with a number of third limit blocks 44 that cooperate with the first limit block 224.

[0039] The push block 32 inside the top cover 3 can push the piercing element 4 to rotate. That is, when the top cover 3 rotates, it can drive the push block 32 to rotate synchronously. In turn, the push block 32 can push the stop block 42 to rotate synchronously. That is, when the top cover 3 rotates upward, it pushes the piercing element 4 to rotate downward, thereby pushing the piercing element 4 to pierce and cut the top of the top cover 3.

[0040] Please refer to Figure 5As shown, in another embodiment of this application, the inner wall of the lower cover 1 is provided with a first internal thread 13 that is screwed onto the bottle body, the lower end of the lower cover 1 is provided with a first anti-theft ring 14 that is point-connected to the bottle body, the outer wall of the lower cover 1 is provided with a plurality of first prisms 17 arranged vertically along its circumference, the inner wall of the first connecting part 21 is provided with a plurality of second prisms 211, and each second prism 211 is inserted into the gap between two first prisms 17 at corresponding positions.

[0041] In this embodiment, the first internal thread 13 is used to screw onto the bottle body to seal the top opening of the bottle. The first anti-theft ring 14 is used for the anti-theft connection between the bottle body and the lower cap 1, preventing the dry powder puncture cap from being opened arbitrarily and ensuring the safety and hygiene of the liquid inside the bottle. The first anti-theft ring 14 is integrally formed with the lower cap 1 and connected by a point; the first anti-theft ring 14 is locked to the bottle body by a snap-fit, and the bottle body has a protrusion that restricts the rotation of the first anti-theft ring 14. When the lower cap 1 is unscrewed, the point connection between the first anti-theft ring 14 and the lower cap 1 is torn off and remains on the bottle body, thus determining whether the bottle with the dry powder puncture cap has been opened, thereby ensuring its security. The first prism 17 is disposed on the outer wall of the lower cover 1 and is used to engage with the second prism 211 on the inner wall of the first connecting part 21 of the base 2. Each second prism 211 is engaged between two first prisms 17, thereby achieving relative positioning of the base 2 and the lower cover 1. When the base 2 is rotated, the second prism 211 can push the first prism 17 to rotate synchronously, thereby driving the lower cover 1 to rotate. When it is necessary to remove the lower cover 1 from the bottle body through the opening at the top of the bottle, the lower cover 1 can be unscrewed from the bottle body by rotating the base 2.

[0042] In this embodiment, the outer wall of the lower cover 1 is provided with a first limiting ring 18 along its circumference, located below the first prism 17, and the inner wall of the first connecting part 21 is provided with a second limiting ring 212 for cooperating with the first limiting ring 18. Through the structural arrangement of the second limiting ring 212 and the first limiting ring 18, the upper and lower positions of the lower cover 1 and the base 2 are limited, preventing the base 2 from separating from the lower cover 1.

[0043] Please refer to Figure 5 As shown, in another embodiment of this application, the top inner side of the lower cover 1 is provided with a first sealing ring 11 and a second sealing ring 12 extending downward. The first sealing ring 11 is located inside the second sealing ring 12, and the downward extension length of the first sealing ring 11 is greater than that of the second sealing ring 12. The first sealing ring 11 and the second sealing ring 12 are respectively engaged on the inner and outer sides of the top opening of the bottle body.

[0044] In this embodiment, the first sealing ring 11 and the second sealing ring 12 are used to seal the bottle body. The first sealing ring 11 and the second sealing ring 12 are engaged with the inner and outer sides of the top opening of the bottle body, forming a double-seal structure to improve sealing performance. The downward extension length of the first sealing ring 11 is greater than that of the second sealing ring 12, increasing the sealing area between the inside of the top opening of the bottle body and the lower cap 1, thus improving sealing performance. Furthermore, the first internal thread 13, when screwed into the top opening of the bottle body, forms a third sealing structure, further improving sealing performance.

[0045] Please refer to Figure 6 As shown, further, the top of the lower cover 1 is provided with a third sealing ring 16 extending upward along its edge, the inner side of the connecting surface 23 is provided with a second groove 213 that is recessed upward, the third sealing ring 16 is inserted into the second groove 213 and abuts against the connecting surface 23, and a fourth sealing ring 214 protruding towards the third sealing ring 16 is provided on one side of the second groove 213 located inside the third sealing ring 16.

[0046] The third sealing ring 16 is used for sealing between the lower cover 1 and the base 2. It is inserted into the second groove 213 in the connecting surface 23 to form a sealing structure. The fourth sealing ring 214 is used to abut against the inner side of the third sealing ring 16 to form a second sealing structure. The sealing performance of the dry powder in the sealing chamber is guaranteed by the two sealing structures.

[0047] Please refer to Figure 7 As shown, in another embodiment of this application, the outer wall of the second connecting part 22 is provided with an external thread 221, the inner wall of the upper cover 3 is provided with a second internal thread 31 that mates with the external thread 221, the top inner side of the upper cover 3 is provided with a fifth sealing ring 33 and a sixth sealing ring 34 extending downwards, the fifth sealing ring 33 is located inside the sixth sealing ring 34, the downward extension length of the fifth sealing ring 33 is greater than that of the sixth sealing ring 34, the fifth sealing ring 33 and the sixth sealing ring 34 are respectively engaged on the inner and outer sides of the top opening of the second connecting part 22, and a second anti-theft ring 35 is provided below the upper cover 3.

[0048] In this embodiment, the fifth sealing ring 33 and the sixth sealing ring 34 are engaged on the inner and outer sides of the top opening of the second connecting part 22 of the upper cover 3, realizing a double sealing structure between the base 2 and the upper cover 3, ensuring the sealing effect of the storage chamber. The downward extension length of the fifth sealing ring 33 is greater than that of the sixth sealing ring 34, increasing the sealing area between the top interior of the base 2 and the lower cover 3, and improving the sealing performance. Furthermore, in conjunction with the screw connection of the second internal thread 31 to the second connecting part 22 of the base 2, a third sealing structure is formed, further improving the sealing performance. The external thread 221 is used to engage with the second internal thread 31 to achieve the screw connection between the base 2 and the upper cover 3.

[0049] In this embodiment, the second anti-theft ring 35 is used for the anti-theft connection between the upper cover 3 and the base 2, preventing the upper cover 3 from being opened arbitrarily and ensuring the safety and hygiene of the dry powder in the storage chamber. The second anti-theft ring 35 is integrally formed with the upper cover 3 and is connected by a point. When the upper cover 3 is unscrewed, the point connection of the second anti-theft ring 35 is torn off and left on the base 2, which can determine whether the upper cover 3 of the dry powder puncture cap has been opened, thereby ensuring its security. The outer wall of the second connecting part 22 of the base 2 is provided with a third limiting ring 225 that cooperates with the second anti-theft ring 35 and a second limiting block 226 for limiting the rotation of the second anti-theft ring 35. The third limiting ring 225 limits the vertical displacement of the second anti-theft ring 35, preventing the second anti-theft ring 35 from detaching from the base 2 as the upper cover 3 is rotated open.

[0050] Please refer to Figure 1 and Figure 7 As shown, furthermore, the upper inner side of the second connecting portion 22 is provided with a first arc-shaped portion 223, and the side of the fifth sealing ring 33 near the second connecting portion 22 is provided with a second arc-shaped portion 331 that cooperates with the first arc-shaped portion 223. The first arc-shaped portion 223 and the second arc-shaped portion 331 form a sealing structure. Through the cooperation of the first arc-shaped portion 223 and the second arc-shaped portion 331, a fourth sealing structure is formed between the base 2 and the upper cover 3, further improving the sealing performance of the storage chamber used for storing dry powder.

[0051] In this application, when using the dry powder puncture cap, the upper cover 3 is first screwed on, causing it to rotate upward relative to the base 2. As the upper cover 3 rotates upward, the point connection between the second anti-theft ring 35 and the upper cover 3 is first severed. Then, the push block 32 on the upper cover 3 pushes the stop block 42 of the puncture member 4, causing the puncture member 4 to rotate downward along the guide rib 222 of the base 2. The cutting blade 41 of the puncture member 4 then rotates downward accordingly. The cutting blade 41 can puncture and cut the first groove 15 at the top of the lower cover 1, and as the puncture member 4 moves downward, it can press down the cut portion, forming a connecting channel, allowing the dry powder in the storage chamber to fall into the liquid inside the bottle, thus achieving mixing of the dry powder and liquid. The upper cover 3 can be directly unscrewed and separated from the base 2 to open the dry powder puncture cap; the upper cover 3 can also be rotated backward, rotated downward, and tightened to ensure the dry powder puncture cap seals the bottle. Next, the first connecting part 21 of the rotating base 2 can push the first prism 17 of the lower cover 1 through the second prism 211 of the base 2, so that the lower cover 1 and the base 2 rotate synchronously, the lower cover 1 is disconnected from the first anti-theft ring 14, and then the lower cover 1 rotates upward with the rotation of the base 2 and separates from the bottle body, so that the dry powder puncture cap is unscrewed off the bottle body.

[0052] In this application, if it is not necessary to mix the dry powder with the liquid, the first connecting part 21 of the base 2 can be directly screwed on to unscrew the lower cover 1 directly off the bottle. At this time, the upper cover 3 remains stationary relative to the base 2, and the piercing part 4 will not pierce the lower cover 1. Therefore, the dry powder stored in the storage chamber will not fall into the bottle.

[0053] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A dry powder piercing cap comprising a lower cap (1) for connection with the opening of the top of a bottle body, an upper cap (3) provided with a screw cap on the upper side of a base (2) connected on the upper side of the lower cap (1), characterized in that: Both the lower cover (1) and the upper cover (3) are cylindrical structures with a sealed top and an open bottom. The base (2) is a cylindrical structure with an open top and an open bottom, and is divided into a first connecting part (21) for connecting with the lower cover (1), a second connecting part (22) for connecting with the upper cover (3), and a connecting surface (23) for connecting the first connecting part (21) and the second connecting part (22). The diameter of the first connecting part (21) is larger than the diameter of the second connecting part (22). The bottom of the upper cover (3) is screwed onto the base (2), and the bottom of the base (2) is screwed onto the lower cover (1). The base (2) has a flexible... The piercing element (4) rotates up and down. The piercing element (4) is a cylindrical structure with an open top and an open bottom. Multiple cutting blades (41) are provided around its bottom along its circumference. The multiple cutting blades (41) are distributed in a local area at the bottom of the piercing element (4). The inner side of the top of the lower cover (1) is provided with a first groove (15) that is concave upwards, corresponding to the circumference of the piercing element (4). The side wall of the base (2), the top of the lower cover (1), and the top of the upper cover (3) form a storage chamber for holding dry powder. The piercing element (4) can rotate downwards and pierce the first groove (15) to form a connecting channel for putting the dry powder in the storage chamber into the bottle.

2. A dry powder piercing closure according to claim 1, wherein: The upper half of the inner wall of the base (2) is provided with a number of guide ribs (222) for the piercing piece (4) to rotate up and down along its circumference. The upper and lower ends of the guide ribs (222) are provided with first limiting blocks (224) for limiting the movement of the piercing piece (4).

3. A dry powder piercing closure according to claim 2, wherein: The outer wall of the puncture member (4) is provided with a plurality of guide protrusions (43) that cooperate with the guide rib (222) and are used for the vertical rotation of the puncture member (4). The upper end of the inner wall of the puncture member (4) is provided with a plurality of stops (42) for its rotation. The upper end of the inner wall of the puncture member (4) is provided with at least one fourth limiting block (45) for limiting its rotation.

4. A dry powder piercing closure according to claim 3, wherein: The top inner side of the cover (3) is provided with a push block (32) for driving the piercing member (4) to rotate up and down and cooperating with the stop block (42). The upper end of the outer wall of the piercing member (4) is provided with a number of third limit blocks (44) that cooperate with the first limit block (224).

5. A dry powder piercing closure according to claim 1, wherein: The inner wall of the lower cover (1) is provided with a first internal thread (13) that is screwed onto the bottle body. The lower end of the lower cover (1) is provided with a first anti-theft ring (14) that is connected to the bottle body. The outer wall of the lower cover (1) is evenly provided with several first prisms (17) arranged vertically along its circumference. The inner wall of the first connecting part (21) is provided with several second prisms (211). Each second prism (211) is inserted into the gap between two first prisms (17) at the corresponding position.

6. A dry powder piercing closure according to claim 1, characterized in that: The top inner side of the lower cover (1) is provided with a first sealing ring (11) and a second sealing ring (12) extending downward. The first sealing ring (11) is located inside the second sealing ring (12). The length of the first sealing ring (11) extending downward is greater than that of the second sealing ring (12). The first sealing ring (11) and the second sealing ring (12) are respectively engaged on the inner and outer sides of the top opening of the bottle.

7. A dry powder piercing closure according to claim 6, wherein: The top of the lower cover (1) is provided with a third sealing ring (16) extending upward along its edge. The inner side of the connecting surface (23) is provided with a second groove (213) that is recessed upward. The third sealing ring (16) is inserted into the second groove (213) and abuts against the connecting surface (23). The side of the second groove (213) located inside the third sealing ring (16) is provided with a fourth sealing ring (214) that protrudes toward the third sealing ring (16).

8. A dry powder piercing closure according to claim 1, characterized in that: The outer wall of the second connecting part (22) is provided with an external thread (221), and the inner wall of the upper cover (3) is provided with a second internal thread (31) that mates with the external thread (221). The top inner side of the upper cover (3) is provided with a fifth sealing ring (33) and a sixth sealing ring (34) extending downward. The fifth sealing ring (33) is located inside the sixth sealing ring (34), and the downward extension length of the fifth sealing ring (33) is greater than that of the sixth sealing ring (34). The fifth sealing ring (33) and the sixth sealing ring (34) are respectively engaged on the inner and outer sides of the top opening of the second connecting part (22). The lower part of the upper cover (3) is provided with a second anti-theft ring (35).

9. A dry powder piercing closure according to claim 8, wherein: The upper inner side of the second connecting part (22) is provided with a first arc-shaped part (223), and the side of the fifth sealing ring (33) near the second connecting part (22) is provided with a second arc-shaped part (331) that cooperates with the first arc-shaped part (223). The first arc-shaped part (223) and the second arc-shaped part (331) form a sealing structure.

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