CN-224225710-U - Container mouth sealing structure and container

Abstract

The application provides a container mouth sealing structure and a container, the container mouth sealing structure comprises an annular boss, a first sealing gasket, a second sealing gasket and a pressing piece. The annular boss is circumferentially arranged along the inner wall of the container mouth, and the side wall of the container mouth is formed by the outward extension of the outer side surface of the annular boss along the axial direction of the container mouth. The pressing piece comprises a body part and an annular flange positioned at one end of the body part, and is used for being partially inserted into the container mouth and enabling the annular flange to be positioned outside the annular boss. The first sealing gasket is used for being installed between the annular flange and the annular boss, and the second sealing gasket is used for being abutted against the outer side surfaces of the ends of the annular flange and the protruding part. The container mouth sealing structure and the container provided by the application can greatly improve the problem of liquid leakage at the container mouth.

Inventors

• XIN WEIFENG
• LI WENBIAO

Assignees

• 深圳市益思科技有限公司

Dates

Publication Date

20260512

Application Date

20250429

Claims (10)

1. 1. The sealing structure of the container mouth is characterized by comprising an annular boss, a first sealing gasket, a second sealing gasket and a pressing piece; The annular boss is circumferentially arranged along the inner wall of the container opening, and the side wall of the container opening extends outwards from the outer side surface of the annular boss along the axial direction of the container opening to form a protruding part; The pressing piece comprises a body part and an annular flange positioned at one end of the body part, wherein the pressing piece is used for being partially inserted into the container mouth and enabling the annular flange to be positioned at the outer side of the annular boss; the first sealing gasket is used for being installed between the annular flange and the annular boss, and the second sealing gasket is used for being abutted against the outer side surfaces of the ends of the annular flange and the protruding part.
2. 2. The container finish seal of claim 1 wherein said annular flange is formed by an outer sidewall of said body portion extending radially outwardly of said body portion, an outer diameter of said annular flange being less than an inner diameter of said boss, and an outer diameter of said body portion being less than an inner diameter of said annular boss.
3. 3. The container finish seal of claim 2, wherein a circumferential inner wall of the first seal gasket is adapted to abut the body portion, a circumferential outer wall of the first seal gasket is adapted to abut an inner sidewall of the boss, an axial inner wall of the first seal gasket is adapted to abut the annular boss, and an axial outer wall of the first seal gasket is adapted to abut the annular flange.
4. 4. The container finish seal of claim 2 wherein said second sealing bead has an outer diameter that is the same as an outer diameter of said boss and an inner diameter that is less than an inner diameter of said boss.
5. 5. A container, comprising a container body, a container cover, and a container opening sealing structure according to any one of claims 1 to 4, wherein the container body is provided with a container opening, the container cover is used for covering the container opening, and the container opening sealing structure is arranged between the container opening and the container cover and is used for sealing the container opening.
6. 6. The container of claim 5, wherein the container lid is threadably coupled to the container mouth, the axially outer wall of the second sealing gasket abutting the inner wall of the container lid, the axially inner wall of the second sealing gasket abutting the annular flange and the surface of the boss on the side of the container lid.
7. 7. The container of claim 5, wherein the inner surface of the container cover is provided with an annular groove for mounting the second sealing gasket.
8. 8. The container of claim 7, wherein the inner surface of the container cover is provided with an annular depression ledge protruding from the inner surface of the container cover, the depression ledge forming the annular groove between the depression ledge and the inner side wall of the container cover, the depression ledge being adapted to abut the annular flange when the container cover is positioned at the container mouth.
9. 9. The container of claim 5, further comprising a filter plug comprising the pressing member and a filter screen disposed on the body portion.
10. 10. The container of claim 5, further comprising a vent plug, wherein the center of the container cover is provided with a vent hole, the inner surface of the container cover is provided with an annular mounting portion, the inner cavity of the mounting portion is communicated with the vent hole, and the mounting portion is used for mounting the vent plug.

Description

Container mouth sealing structure and container Technical Field The application relates to the technical field of container sealing, in particular to a container mouth sealing structure and a container. Background The opening of a tank or other container for liquids requires a seal to prevent leakage of the liquid after the container is capped. The inventors have found that in carrying out the present application, the prior art has at least the problem of sealing by directly cushioning an annular gasket between the container mouth and the container lid, or in some constructions having a filter plug, cushioning an annular gasket between the annular flange of the filter plug and the container mouth. Although the sealing structure can reduce the seepage amount of the container to a certain extent, the sealing structure still has the seepage problem, the seepage problem still can occur at the gap between the inner wall of the container and the container cover to a certain extent, the seepage problem can possibly cause environmental pollution, and serious potential safety hazard problems can also be brought. Disclosure of Invention Based on the structure, the application provides a container mouth sealing structure and a container, so that the problem that liquid seepage is easy to occur at the container mouth is solved better. In order to achieve the above object, the technical solution of the embodiment of the present application is as follows: in one aspect, an embodiment of the present application provides a container mouth sealing structure, including an annular boss, a first sealing gasket, a second sealing gasket, and a pressing member; The annular boss is circumferentially arranged along the inner wall of the container opening, and the side wall of the container opening extends outwards from the outer side surface of the annular boss along the axial direction of the container opening to form a protruding part; The pressing piece comprises a body part and an annular flange positioned at one end of the body part, wherein the pressing piece is used for being partially inserted into the container mouth and enabling the annular flange to be positioned at the outer side of the annular boss; the first sealing gasket is used for being installed between the annular flange and the annular boss, and the second sealing gasket is used for being abutted against the outer side surfaces of the ends of the annular flange and the protruding part. In one embodiment, the annular flange is formed by an outer sidewall of the body portion extending radially outwardly of the body portion, an outer diameter of the annular flange being less than an inner diameter of the boss, and an outer diameter of the body portion being less than an inner diameter of the annular boss. In one embodiment, the circumferential inner wall of the first sealing gasket is configured to abut the body portion, the circumferential outer wall of the first sealing gasket is configured to abut the inner side wall of the boss, the axial inner wall of the first sealing gasket is configured to abut the annular boss, and the axial outer wall of the first sealing gasket is configured to abut the annular flange. In one embodiment, the second sealing gasket has an outer diameter that is the same as the outer diameter of the boss, and an inner diameter that is smaller than the inner diameter of the boss. In another aspect, an embodiment of the present application provides a container, including a container body, a container cover, and a container opening sealing structure as described above, where the container body is provided with a container opening, the container cover is used for covering the container opening, and the container opening sealing structure is provided between the container opening and the container cover and is used for sealing the container opening. In one embodiment, the container cover is in threaded connection with the container opening, the outer wall of the second sealing gasket in the axial direction is abutted with the inner wall of the container cover, and the inner wall of the second sealing gasket in the axial direction is abutted with the annular flange and the surface of the protruding portion, which is close to one side of the container cover. In one embodiment, the inner surface of the container cover is provided with an annular groove for mounting the second sealing gasket. In one embodiment, the inner surface of the container cover is provided with an annular pressing table, the pressing table protrudes out of the inner surface of the container cover, the annular groove is formed between the pressing table and the inner side wall of the container cover, and the pressing table is used for abutting against the annular flange when the container cover is arranged on the container opening. In one embodiment, the container further comprises a filter plug, and the filter plug comprises the pressing piece and a filter screen arranged on