A solid-liquid separation bottle cap to improve sealing performance

Abstract

This utility model discloses a solid-liquid separation bottle cap with improved sealing effect, including a storage cap with a storage cavity open at both the top and bottom. A top-opening component is installed inside the storage cavity, with openings at both the top and bottom and a water outlet at the top. The storage cap has a connecting part, and a bottle mouth sealing ring is provided between the connecting part and the storage cavity. The bottle mouth sealing ring consists of a bottle mouth support part, a bottle mouth sealing part, and a bottle mouth guide part. The bottle mouth sealing ring abuts against the bottle mouth, achieving radial compression sealing and completely preventing liquid leakage from the bottle. Simultaneously, the bottle mouth guide part of the sealing ring guides insertion, facilitating quick and precise assembly of the storage cap and the bottle mouth, avoiding jamming or deformation of the sealing ring during assembly. The bottle mouth support part provides axial support for the sealing part, preventing deformation due to excessive assembly force or long-term use, ensuring the durability of the seal.

Description

Technical Field

[0001] This utility model relates to a packaging container, and more particularly to a solid-liquid separation bottle cap. Background Technology

[0002] The applicant of this application previously filed a patent document with publication number CN223059648U, in which a tear groove was cut into the bottom of the bottle cap holder. By twisting the cap, the opening member was pushed to press against the bottom of the bottle cap holder, causing the bottom of the bottle cap holder to break along the tear groove, thereby achieving solid-liquid mixing.

[0003] However, during the subsequent production of bottle caps, it was discovered that processing the tear groove was quite difficult. If the tear groove was cut too deep, the beverage inside the cap holder would leak out; if the tear groove was cut too shallow, the tear would be difficult to break, and the cap would not open. Furthermore, when filling the bottle cap holder with beverage, because the bottle cap holder is a one-piece structure, the top cap can only be unscrewed before the beverage is filled into the storage cavity from the top of the bottle cap holder. After filling, when assembling the bottle cap, the top cap needs to be tightened for sealing. Excessive tightening can easily cause the top cap to push the opening component and puncture the tear groove at the bottom, causing the bottle cap to be punctured during filling, resulting in a low yield rate during production. Based on the aforementioned shortcomings, the applicant submitted patent application number 2025211525505. In this application, a sealing cap is connected to the bottom of the bottle cap, and a fracture rib and a connecting rib are provided between the connecting part of the sealing cap and the sealing part. When the top cap is rotated and the top opening member is pushed down to open the sealing cap, the fracture rib breaks, allowing the contents inside the bottle cap to fall into the bottle. However, this solid-liquid separation bottle cap still has certain shortcomings. At the connection between the bottle cap and the bottle body, the bottle mouth only abuts against the bottle cap, and the sealing at the connection between the bottle cap and the bottle body is not good enough, causing the liquid inside the bottle to leak out from the gaps in the bottle cap. Therefore, targeted improvements are needed to address the problems of the above-mentioned structure. Utility Model Content

[0004] To address the aforementioned problems with solid-liquid separation bottle caps, this invention provides a solid-liquid separation bottle cap that improves sealing performance.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A solid-liquid separation bottle cap for improved sealing includes a storage cap with a storage cavity open at both the top and bottom. A top-opening member is installed within the storage cavity, also open at both the top and bottom, and has a water outlet at its top. A limiting structure is provided between the storage cavity and the top-opening member to restrict the top-opening member to axial movement only, preventing circumferential rotation. A top cover is threaded to the upper end of the storage cap, and a sealing cap is installed at the lower end, the sealing cap having a top-opening portion. A top-opening structure, linked to the top cover, is provided between the top cover and the top-opening member to push the top-opening member axially and pierce the top-opening portion. The storage cap is also provided with a connection... A bottle neck connection portion is provided between the connection portion and the storage cavity, and a bottle neck sealing ring is provided for inserting the bottle neck. The bottle neck sealing ring is composed of a bottle neck support portion connected to the storage cap, a bottle neck sealing portion located below the bottle neck support portion, and a bottle neck guide portion located below the bottle neck sealing portion. The outer wall of the bottle neck sealing portion is an arc shape protruding towards the connection portion, and the outer wall of the bottle neck guide portion is an inclined surface with its upper end inclined towards the connection portion. The outer diameter of the lower end of the bottle neck guide portion is smaller than the inner diameter of the bottle neck, the outer diameter of the bottle neck sealing portion is larger than the inner diameter of the bottle neck, and the outer diameter of the bottle neck support portion is equal to or smaller than the inner diameter of the bottle neck.

[0006] The top-opening structure includes a tubular portion disposed within the upper cover. The inner wall of the tubular portion is provided with two guide blocks, and the bottom of the guide blocks is a guide slope. The top-opening component is provided with two guide protrusions that contact the guide slope. When the upper cover is rotated during opening, the guide slope presses against the guide protrusions, causing the top-opening component to move downward as a whole and pierce the top-opening portion.

[0007] A sealing ring is provided between the outer wall of the upper cover and the tubular part, which is inserted into the upper end of the storage cover. The sealing ring consists of an upper cover support part connected to the upper cover, an upper cover sealing part located below the upper cover support part, and an upper cover guide part located below the upper cover sealing part. The outer wall of the upper cover sealing part is an outwardly convex arc shape, and the outer wall of the upper cover guide part is an inclined surface with the upper end sloping outward. The outer diameter of the lower end of the upper cover guide part is smaller than the inner diameter of the upper part of the storage cover, the outer diameter of the upper cover sealing part is larger than the inner diameter of the upper part of the storage cover, and the outer diameter of the upper cover support part is equal to or smaller than the inner diameter of the upper part of the storage cover.

[0008] The limiting structure includes axial protrusions disposed on the inner wall of the storage cavity, a guide groove is formed between the axial protrusions, and the outer wall of the top opening member is provided with limiting protrusions that are inserted into the guide groove.

[0009] The bottom of the axial protrusion is provided with a stop step. Twisting the upper cover pushes the top opening member so that the bottom end of the limiting protrusion abuts against the stop step.

[0010] The lower end face of the top opening member is provided with wavy piercing protrusions.

[0011] The outer periphery of the sealing cap is provided with a connecting ring for connecting to the bottom of the storage cap. The connecting ring and the sealing cap are connected by connecting ribs. The connecting ring is fitted onto the locking protrusion extending from the bottom of the storage cap. A number of fracture ribs are provided between the connecting ring and the sealing cap. When the top opening is punctured, the fracture ribs break, and the connecting ribs keep the connecting ring and the sealing cap connected.

[0012] The sealing cover has a sealing protrusion on its edge, which abuts against the inner wall of the storage cover to seal the bottom of the storage cover.

[0013] The sealing cap has a downward recessed portion at its center, and the edge of the recessed portion has a guide slope that is inclined toward the sealing convex edge.

[0014] The beneficial effects of this utility model are as follows: A bottle mouth sealing ring is provided between the storage cap connection and the storage cavity, which is inserted into the bottle mouth. The bottle mouth sealing ring abuts against the bottle mouth, achieving radial compression and sealing to completely prevent liquid leakage from the bottle. Simultaneously, the bottle mouth guide portion of the sealing ring guides insertion, facilitating quick and precise assembly of the storage cap and bottle mouth, avoiding jamming or deformation of the sealing ring during assembly. The bottle mouth support portion provides axial support for the sealing portion, preventing deformation due to excessive assembly force or long-term use, thus ensuring the durability of the seal. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is an exploded view of the present invention.

[0018] Figure 3 This is an anatomical view of the present invention.

[0019] Figure 4 This is a cross-sectional view of the present invention.

[0020] Figure 5 yes Figure 2 A magnified view of A in the middle.

[0021] Figure 6 yes Figure 2 A magnified view of B in the middle.

[0022] Figure 7 yes Figure 4 A magnified view of C.

[0023] Figure 8 yes Figure 4 A magnified view of D.

[0024] Figure 9 This is a cross-sectional view of another embodiment.

[0025] Figure 10 This is a cross-sectional view of the upper cover 3 in another embodiment. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0027] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0028] Reference Figures 1 to 10A solid-liquid separation bottle cap for improving sealing performance includes a storage cap 1. The storage cap 1 has a storage cavity with openings at both the top and bottom. A top-opening member 2 is installed inside the storage cavity. The top-opening member 2 has openings at both the top and bottom and a water outlet 20 at the top. A limiting structure is provided between the storage cavity and the top-opening member 2 to restrict the top-opening member 2 to axial movement only and not circumferential rotation. An upper cover 3 is threaded to the upper end of the storage cap 1, and a sealing cap 4 is installed at the lower end. The sealing cap 4 is provided with... The storage cover 1 has a top opening portion 40; a top opening structure is provided between the upper cover 3 and the top opening member 2, which is linked with the upper cover 3 to push the top opening member 2 to move axially and pierce the top opening portion 40; the storage cover 1 is provided with a connecting portion 10 for connecting the bottle mouth, and a bottle mouth sealing ring 11 for inserting the bottle mouth is provided between the connecting portion 10 and the storage cavity, the bottle mouth sealing ring 11 consists of a bottle mouth support portion 110 connected to the storage cover 1 and a bottle mouth sealing portion 11 located below the bottle mouth support portion 110. The bottle mouth sealing part 110 and the bottle mouth guide part 112 located below the bottle mouth sealing part 111 are combined. The outer wall of the bottle mouth sealing part 111 is an arc shape protruding towards the connecting part 10. The outer wall of the bottle mouth guide part 112 is an inclined surface with its upper end inclined towards the connecting part 10. The outer diameter of the lower end of the bottle mouth guide part 112 is smaller than the inner diameter of the bottle mouth. The outer diameter of the bottle mouth sealing part 111 is larger than the inner diameter of the bottle mouth. The outer diameter of the bottle mouth support part 110 is equal to or smaller than the inner diameter of the bottle mouth. A bottle mouth sealing ring is installed between the cap connection and the storage cavity, which is inserted into the bottle mouth. The bottle mouth sealing ring abuts against the bottle mouth, and radial compression sealing is achieved through the bottle mouth sealing ring to completely prevent liquid leakage from the bottle. At the same time, the bottle mouth guide part of the bottle mouth sealing ring guides the insertion, which facilitates quick and accurate assembly of the storage cap and the bottle mouth, and avoids jamming or deformation of the sealing ring during assembly. The bottle mouth support part provides axial support for the sealing part, which prevents the bottle mouth sealing part from deforming due to excessive assembly force or long-term use, and ensures the durability of the seal.

[0029] In this embodiment, the storage lid, top cover, top opening component, and sealing cover are four separately manufactured components, all of which are injection molded from plastic with a certain degree of hardness and elasticity.

[0030] The top-opening structure includes a tubular portion 30 disposed within the upper cover 3. The inner wall of the tubular portion 30 is provided with two guide blocks 300, and the bottom of the guide blocks 300 is a guide slope 301. The top-opening member 2 is provided with two guide protrusions 21 that contact the guide slope 301. When the upper cover 3 is rotated, the guide slope 301 presses against the guide protrusions 21, causing the top-opening member 2 to move downward as a whole and pierce the top-opening portion 40.

[0031] A sealing ring 31 is provided between the outer wall of the upper cover 3 and the tubular part 30, and is inserted into the upper end of the storage cover 1. The sealing ring 31 is composed of an upper cover support part 310 connected to the upper cover 3, an upper cover sealing part 311 located below the upper cover support part 310, and an upper cover guide part 312 located below the upper cover sealing part 311. The outer wall of the upper cover sealing part 311 is an outwardly protruding arc shape, and the outer wall of the upper cover guide part 312 is an inclined surface with the upper end sloping outward. The outer diameter of the lower end of the upper cover guide part 312 is smaller than the inner diameter of the upper part of the storage cover 1, the outer diameter of the upper cover sealing part 311 is larger than the inner diameter of the upper part of the storage cover 1, and the outer diameter of the upper cover support part 310 is equal to or smaller than the inner diameter of the upper part of the storage cover 1.

[0032] This embodiment features a sealing ring on the top cover to prevent external air, moisture, or impurities from entering the storage cavity through the upper connection gap between the top cover and the storage cover, thus avoiding contamination of the solids inside the cavity. Furthermore, the structure of the lower outer diameter of the top cover guide portion being smaller than the inner diameter of the storage cover facilitates threaded assembly between the top cover and the storage cover. The outer diameter of the top cover sealing portion is larger than the inner diameter of the storage cover, and the top cover sealing portion and the storage cover are interference-fitted, enhancing the radial sealing pressure between the top cover and the storage cover. Even with long-term storage or vibration during transportation, the seal cannot loosen. The top cover support portion prevents excessive compression and deformation of the sealing portion, extending the seal's lifespan.

[0033] The limiting structure includes axial protrusions 12 disposed on the inner wall of the storage cavity, and guide grooves formed between the axial protrusions 12. The outer wall of the top opening member 2 is provided with limiting protrusions 22 that are inserted into the guide grooves. In this embodiment, multiple vertical axial protrusions 12 are provided, and the guide grooves formed between the axial protrusions 12 ensure high guiding accuracy, strictly limit the circumferential freedom of the top opening member, ensure that the axial movement is along the direction of the guide grooves, and improve the reliability of the top opening action. The bottom of the axial protrusions 12 is provided with a stop step 13. Twisting the top cover 3 pushes the top opening member 2, so that the bottom end of the limiting protrusions 22 abuts against the stop step 13; preventing the top opening member from moving down too much and avoiding the top opening member from falling into the bottle axially.

[0034] The lower end face of the top opening member 2 is provided with a wave-shaped piercing protrusion 23; the wave-shaped piercing protrusion 23 forms multiple sharp tips, which makes the contact area between the top opening member and the sealing cap small and the pressure strong, which can easily pierce the top opening, making opening easier and the rupture more thorough, reducing the difficulty of opening the bottle cap; the wave-shaped piercing protrusion 23 is more evenly stressed, and compared with a single piercing protrusion 23, the wave-shaped piercing protrusion 23 is less likely to break or deform due to excessive force.

[0035] The outer periphery of the sealing cap 4 is provided with a connecting ring 41 for connecting to the bottom of the storage cap 1. The connecting ring 41 and the sealing cap 4 are connected by a connecting rib 42. The connecting ring 41 is fitted onto the locking protrusion 14 extending from the bottom of the storage cap 1. Several fracture ribs 43 are provided between the connecting ring 41 and the sealing cap 4. When the top opening part 40 is punctured, the fracture rib 43 breaks, and the connecting rib 42 keeps the connecting ring 41 and the sealing cap 4 connected. In this embodiment, one connecting rib and several fracture ribs are provided. The connection strength of the fracture rib is lower than that of the connecting rib. When the bottle cap is closed, the connecting rib and the fracture rib keep the sealing cap and the connecting ring fixedly connected. When the cap is screwed on, the top opening part moves axially, and the puncture protrusion of the top opening part presses against the top opening part of the sealing cap, and the fracture rib is pulled off. Because the connection strength of the connecting rib is stronger, even if the fracture rib breaks, the connecting rib still keeps the sealing cap and the connecting ring connected, so that the sealing cap flips down and opens with the connecting rib as the connection point, allowing the contents of the storage cap to fall into the bottle.

[0036] The connecting ring 41 and the sealing cap 4 are connected by a connecting rib 42. In this utility model, the sealing cap is fastened to the bottom of the storage cap as a separate component. When filling the beverage, the filling is carried out from the bottom of the storage cap. After filling, the sealing cap is fastened to the storage cap, and the top cap always remains sealed. The bottle cap will not be punctured during filling. After the bottle cap is opened, the fracture rib breaks, and the sealing cap remains connected to the storage cap and will not fall into the bottle, thus avoiding contamination of the liquid inside the bottle by the sealing cap and making the finished product more aesthetically pleasing. When the top cap is screwed on, the fracture rib will break, causing one side of the sealing cap to fall off. The sealing cap can then function as an anti-theft ring, eliminating the need for an additional anti-theft ring between the top cap and the storage cap, thereby reducing the production cost of the bottle cap.

[0037] The sealing cover 4 has a sealing protrusion 44 on its edge, which abuts against the inner wall of the storage cover 1 to seal the bottom of the storage cover 1; the center of the sealing cover 4 has a downward recessed portion 45, and the edge of the recessed portion 45 has a guide slope 46 that is inclined toward the sealing protrusion 44.

[0038] This embodiment features a sealing protrusion 44, which increases the radial seal between the sealing cap and the inner wall of the storage cap, forming a sealing barrier to prevent air and moisture from entering the bottle cap. The sealing protrusion fits tightly against the inner wall of the storage cap, preventing seal failure caused by cap displacement even during transportation. Furthermore, it eliminates the need for complex sealing components, achieving sealing through an injection-molded sealing protrusion, thus reducing costs and simplifying assembly.

[0039] As another embodiment of this utility model, such as Figure 9 and Figure 10As shown in the figure, in this embodiment, a folding part 32 and a connecting part 33 are provided at the bottom of the upper cover 3. A baffle 320 is integrally formed on the edge of the folding part 32. The baffles 320 are equidistantly arranged on the edge of the folding part 32. A stop protrusion 15 corresponding to the position of the folding part 32 is provided on the storage cover 1. As shown in the figure in the specification, when the bottle cap is installed on the bottle body, the baffle 320 will fold inward against the bottle cap. At this time, the baffle 320 acts as a stop and can abut against the stop protrusion 15 of the storage cover 1 to prevent the upper cover 3 from falling off the storage cover 1. After the upper cover 3 is opened, the folding part 32 of the upper cover 3 folds along the connecting part 33, and the baffle 320 is folded out. Since the folding part 32 cannot be restored to its original state after being opened, the folding part 32 can play an anti-theft role. When the upper cover is opened, the folding part 32 is exposed, indicating that the upper cover 3 has been opened.

[0040] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be 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 according to the specific circumstances.

[0041] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0042] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A solid-liquid separation bottle cap for improving sealing effect, comprising a storage cap (1), wherein the storage cap (1) is provided with a storage cavity with openings at both the top and bottom, and a top opening member (2) is installed in the storage cavity, wherein the top opening member (2) is open at both the top and bottom, and a water outlet (20) is provided at the top; characterized in that A limiting structure is provided between the storage cavity and the top opening member (2) to restrict the top opening member (2) to only move axially and not rotate circumferentially. The upper end of the storage cover (1) is threaded with an upper cover (3), and the lower end is fitted with a sealing cover (4). The sealing cover (4) is provided with a top opening part (40). A top opening structure is provided between the upper cover (3) and the top opening member (2) and is linked with the upper cover (3) to push the top opening member (2) to move axially and pierce the top opening part (40). The storage cover (1) is provided with a connecting part (10) for connecting the bottle mouth. A bottle mouth sealing ring (11) for inserting into the bottle mouth is provided between the connecting part (10) and the storage cavity. (11) It is composed of a bottle mouth support (110) connected to the storage cover (1), a bottle mouth sealing part (111) located on the lower side of the bottle mouth support (110) and a bottle mouth guide part (112) located on the lower side of the bottle mouth sealing part (111). The outer wall of the bottle mouth sealing part (111) is an arc shape protruding towards the connecting part (10). The outer wall of the bottle mouth guide part (112) is an inclined surface with the upper end inclined towards the connecting part (10). The outer diameter of the lower end of the bottle mouth guide part (112) is smaller than the inner diameter of the bottle mouth. The outer diameter of the bottle mouth sealing part (111) is larger than the inner diameter of the bottle mouth. The outer diameter of the bottle mouth support part (110) is equal to or smaller than the inner diameter of the bottle mouth.

2. The solid-liquid separation bottle cap for improving sealing effect according to claim 1, characterized in that... The top-opening structure includes a tubular part (30) disposed inside the upper cover (3). The inner wall of the tubular part (30) is provided with two guide blocks (300), and the bottom of the guide block (300) is a guide slope (301). The top-opening member (2) is provided with two guide protrusions (21) that contact the guide slope (301). When the upper cover (3) is rotated, the guide slope (301) squeezes the guide protrusions (21), causing the top-opening member (2) to move downward as a whole and pierce the top-opening part (40).

3. The solid-liquid separation bottle cap for improving sealing effect according to claim 2, characterized in that... A sealing ring (31) is provided between the outer wall of the upper cover (3) and the tubular part (30) and inserted into the upper end of the storage cover (1). The sealing ring (31) is composed of an upper cover support part (310) connected to the upper cover (3), an upper cover sealing part (311) located below the upper cover support part (310), and an upper cover guide part (312) located below the upper cover sealing part (311). The outer wall of the upper cover sealing part (311) is an outwardly protruding arc shape, and the outer wall of the upper cover guide part (312) is an inclined surface with the upper end sloping outward. The outer diameter of the lower end of the upper cover guide part (312) is smaller than the inner diameter of the upper part of the storage cover (1), the outer diameter of the upper cover sealing part (311) is larger than the inner diameter of the upper part of the storage cover (1), and the outer diameter of the upper cover support part (310) is equal to or smaller than the inner diameter of the upper part of the storage cover (1).

4. The solid-liquid separation bottle cap for improving sealing effect according to claim 1, characterized in that... The limiting structure includes an axial protrusion (12) disposed on the inner wall of the storage cavity, a guide groove is formed between the axial protrusions (12), and the outer wall of the top opening member (2) is provided with a limiting protrusion (22) inserted into the guide groove.

5. The solid-liquid separation bottle cap for improving sealing effect according to claim 4, characterized in that... The bottom of the axial protrusion (12) is provided with a stop step (13). Twisting the upper cover (3) pushes the top opening member (2) so that the bottom end of the limiting protrusion (22) abuts against the stop step (13).

6. The solid-liquid separation bottle cap for improving sealing effect according to claim 1, characterized in that... The lower end face of the top opening member (2) is provided with a wavy piercing protrusion (23).

7. The solid-liquid separation bottle cap for improving sealing effect according to claim 1, characterized in that... The outer periphery of the sealing cover (4) is provided with a connecting ring (41) for connecting to the bottom of the storage cover (1). The connecting ring (41) and the sealing cover (4) are connected by a connecting rib (42). The connecting ring (41) is fitted onto the locking protrusion (14) extending from the bottom of the storage cover (1). A plurality of fracture ribs (43) are provided between the connecting ring (41) and the sealing cover (4). When the top opening (40) is punctured, the fracture ribs (43) break, and the connecting ribs (42) keep the connecting ring (41) and the sealing cover (4) connected.

8. The solid-liquid separation bottle cap for improving sealing effect according to claim 1, characterized in that... The sealing cover (4) has a sealing protrusion (44) on its edge, which abuts against the inner wall of the storage cover (1) to seal the bottom of the storage cover (1).

9. The solid-liquid separation bottle cap for improving sealing effect according to claim 8, characterized in that... The center of the sealing cap (4) is provided with a downward recessed portion (45), and the edge of the recessed portion (45) is provided with a guide slope (46) that is inclined toward the sealing protrusion (44).

Images