CN-122009665-A - Anti-backflow bottle cap

CN122009665ACN 122009665 ACN122009665 ACN 122009665ACN-122009665-A

Abstract

The invention discloses a reverse flow prevention bottle cap which comprises a reverse flow prevention valve assembly, wherein the reverse flow prevention valve assembly comprises an inner plug, a partition piece, a bottle opening inner piece, a first ball and a second ball, the bottom of the inner plug stretches into a bottle opening, an extensible reverse flow prevention opening is arranged at the bottom of the inner plug, the bottle opening inner piece is arranged at the top of a bottle opening connecting piece, the partition piece is partitioned between the inner plug and the bottle opening inner piece to form an upper cavity and a lower cavity, the upper cavity and the lower cavity are communicated through a lower wine outlet arranged at the bottom of the partition piece, the first ball is movably arranged in the cavity at the upper part, the second ball is movably arranged in the cavity at the lower part, and when the second ball is subjected to downward pressure, the reverse flow prevention opening is stretched and separated downwards from the cavity at the lower part. When the anti-backflow valve assembly is subjected to the action of external excessively strong air pressure or the ball is jacked by an external structure, the lower wine outlet of the partition piece is broken due to the action of external force and cannot be restored after the breakage, so that counterfeiters are structurally stopped from counterfeiters through backflow.

Inventors

YE GENJUN
ZHAO JIZHONG
ZHOU MIN
LEI ZHIWEI
Tang Chuanting
LI XIANGYAO
WANG PEIYI
LIANG SHENGHUA
YANG DUOBING
ZHANG RUI
WANG CHUANLONG
GUO DAO
HU CHANGHONG
LUO YULONG
YANG JIHONG

Assignees

宜宾五粮液股份有限公司
四川省宜宾普拉斯包装材料有限公司
四川省宜宾五粮液集团有限公司

Dates

Publication Date: 20260512
Application Date: 20260408

Claims (8)

1. The anti-backflow bottle cap comprises a bottle mouth connecting piece (200) arranged on a bottle mouth (100), an inner cap (300), a lower tube (400) and an outer cap (500), wherein the bottle mouth connecting piece (200) is of a through structure, the bottle mouth connecting piece (200) is detachably connected with the bottle mouth (100) and communicated, the inner cap (300) is detachably connected with the bottle mouth connecting piece (200) and seals the bottle mouth connecting piece (200), the lower tube (400) is sleeved outside the bottle mouth connecting piece (200), the outer cap (500) is sleeved outside the inner cap (300) and is abutted against the lower tube (400), the anti-backflow bottle cap is characterized by further comprising an anti-backflow valve assembly, the anti-backflow valve assembly comprises an inner plug (610), a partition piece (620), bottle mouth inner pieces (630), first balls (640) and second balls (650), the bottom of the inner plug (610) stretches into the bottle mouth (100), the bottom of the inner plug (610) is provided with an extensible anti-backflow port (611), the inner plug (620) is arranged at the top of the connecting piece (200), the partition piece (620) is sleeved outside the bottle mouth connecting piece (610), the inner plug (610) and the upper balls and the lower balls (640) are arranged at the upper and lower balls (640) and the lower balls (640) are arranged at the upper and lower cavities (650) and the lower cavities (650) and are movably connected, the anti-backflow port (611) is opened and separated downward from the lower cavity when the second ball (650) is pressed downward.
2. The anti-backflow bottle cap according to claim 1, wherein the inner cap (300) is internally provided with an inner cap sealing ring (310), the inner cap sealing ring (310) is inserted into the top opening of the bottle opening connecting piece (200), the inner cap sealing ring (310) is abutted against the inner wall of the top opening of the bottle opening connecting piece (200) to form sealing fit, and the inner cap (300) is in threaded connection with the bottle opening connecting piece (200) and is in snap connection with the outer cap (500).
3. The anti-backflow bottle cap according to claim 2, wherein a truncated cone structure is arranged in the middle of the bottle opening inner part (630), a plurality of upper wine outlet channels (631) are uniformly distributed around the periphery of the truncated cone structure at intervals in a circumferential direction, the outer diameter of the truncated cone structure is gradually increased from top to bottom, an inner cover sealing ring (310) is inserted between the bottle opening connecting part (200) and the truncated cone structure, and the inner cover sealing ring (310) is in sealing fit with the outer peripheral surface of the truncated cone structure and the inner wall surface of the bottle opening connecting part (200) at the same time.
4. The anti-backflow bottle cap according to claim 3, wherein an inner plug sealing ring (612) is arranged at the top of the inner plug (610), a limiting baffle ring (613) extending radially outwards is arranged in the middle of the inner plug (610), a baffle sealing ring (622) is arranged at the bottom of the baffle member (620), the outer diameter of the baffle sealing ring (622) gradually increases from bottom to top, the inner plug (610) forms axial limiting fit with the bottle opening connecting piece (200) inside the bottle opening connecting piece (200) through the limiting baffle ring (613), the inner plug sealing ring (612) is inserted between the baffle sealing ring (622) and the inner wall of the bottle opening connecting piece (200), and the inner plug sealing ring (612) forms sealing fit with the outer peripheral surface of the baffle sealing ring (622) and the inner wall of the bottle opening connecting piece (200) at the same time.
5. The anti-backflow bottle cap as set forth in claim 3, wherein the upper wine outlet channel (631) of the bottle mouth inner member (630) is a curved channel passing through and bending from below the truncated cone structure, and openings at two ends of the upper wine outlet channel (631) are respectively located at the outer side and the inner side of the truncated cone structure.
6. The anti-backflow bottle cap according to claim 1, wherein a lower limiting ring is arranged on the inner wall of the lower tube (400), the top of the lower tube (400) is inwards bent to form an upper limiting ring, the lower limiting ring of the lower tube (400) forms axial limiting fit with the bottom of the bottle opening connecting piece (200) from the lower side of the bottle opening connecting piece (200), and the upper limiting ring of the lower tube (400) forms axial limiting fit with the bottom of the inner cap (300) from the upper side of the inner cap (300).
7. The anti-backflow bottle cap according to claim 1, wherein the anti-backflow port (611) is of an inverted cone structure formed by a plurality of baffle strips which are obliquely arranged and distributed in an annular interval mode, adjacent baffle strips are connected through breakable pieces, and the caliber of the anti-backflow port (611) is smaller than the outer diameter of the second ball (650) when the anti-backflow port is not unfolded.
8. The anti-backflow bottle cap as claimed in claim 1, wherein the second ball (650) is a coloured ball.

Description

Anti-backflow bottle cap Technical Field The invention relates to the technical field of liquid containers, in particular to a backflow-preventing bottle cap. Background At present, a means for counterfeiting by backflow liquid appears in the white spirit industry, namely, a mineral water bottle is matched with a backflow connecting device to be connected with a white spirit bottle, and wine bodies in the white spirit bottle are transferred in an extrusion mode, so that the counterfeiting method brings serious adverse effects to market order in the white spirit industry. The bottle cap anti-counterfeiting technology is an important bottled product anti-counterfeiting means, and in order to cope with the reverse flow counterfeiting means, manufacturers in various wine industries commonly adopt a method for adding a reverse flow prevention structure to the bottle cap to realize the anti-counterfeiting function of the product. For example, chinese patent application publication No. CN108861042a discloses an anti-backflow anti-counterfeiting bottle cap, which comprises a top cap, a middle cap and an inner cap, wherein the top cap is in threaded connection with the middle cap, a circular buffer device is arranged in the middle cap, the buffer device is connected in the middle cap through a connecting sheet, the buffer device is further connected with an inner plug, the outer diameter of the inner plug is larger than that of the buffer device and smaller than that of the middle cap, the middle cap is in threaded connection with the inner cap, bosses are arranged on the outer circumferential direction of the bottom of the middle cap and the threaded closing-in position of the inner cap, the lower end of the inner cap is conical, a liquid outflow channel is arranged in the inner cap, glass beads are larger than the opening of the bottom of the inner cap, the middle cap and the inner cap are hollow structures, a metal ring is arranged at the boss of the middle cap, and the connecting end of the metal ring and the middle cap is closed inwards. For example, chinese patent application publication No. CN115231124a discloses a sealing bottle cap for preventing backflow, which comprises an upper cover, a lower cover, an inner cover and a ball, wherein the upper cover and the lower cover are connected in a point-like manner, the inner cover is in an integrally formed structure, the upper part of the inner cover is connected with the upper cover, the middle part of the inner cover is connected with the lower cover, the lower part of the inner cover is connected with a bottle opening, the inner cover is hollow, a cavity is arranged inside the inner cover, the cavity is connected with the inner wall of the inner cover by a spacer, the upper part of the cavity is sealed, the side surface of the cavity is hollowed, the ball is placed inside the cavity, a limiting block is arranged below the cavity, the limiting block is in a conical surface, and the diameter of the conical surface is smaller than the diameter of the ball, so that the ball can be supported without falling. The technical proposal of the invention is to block the liquid reserving channel through the ball structure to limit the outflow speed of the liquid, so that the existing reverse flow fake-making means can only slow down the speed of the wine body moving out from the bottle during fake making, but can not achieve the complete anti-fake effect, and a consumer can not directly judge whether the product is counterfeited from the bottle package. Disclosure of Invention The invention aims to solve the technical problem of providing the anti-backflow bottle cap capable of effectively improving the anti-counterfeiting effect on backflow counterfeiting. The anti-backflow bottle cap comprises a bottle opening connecting piece, an inner cap, a lower tube and an outer cap, wherein the bottle opening connecting piece, the inner cap, the lower tube and the outer cap are arranged on a bottle opening, the bottle opening connecting piece is of a through structure, the bottle opening connecting piece is detachably connected and communicated with the bottle opening, the inner cap is detachably connected with the bottle opening connecting piece and seals the bottle opening connecting piece, the lower tube is sleeved outside the bottle opening connecting piece, the outer cap is sleeved outside the inner cap and abuts against the lower tube, the anti-backflow bottle cap further comprises an anti-backflow valve assembly, the anti-backflow valve assembly comprises an inner plug, a partition piece, a bottle opening inner piece, a first ball and a second ball, the bottom of the inner plug stretches into the bottle opening, an extensible anti-backflow opening is formed in the bottom of the inner plug, the partition piece is arranged at the top of the bottle opening connecting piece, an upper cavity and a lower cavity are formed by partition between the inner plug and the bottle opening