Sealing container

Abstract

A sealing container comprising a base cover and a lower cover arranged one above the other and at a distance from each other, a sealing ring being provided along the outer circumferential edge of the lower cover, further comprising a container body with an open opening at its upper end, the lower cover being positioned inside the container body at its upper end, and the base cover covering the open opening of the container body, characterized in that: the outer edge of the base cover is formed transversely as an outer edge A, a lower edge A is provided on the inside of the outer edge A, extending downwards from the base cover, the lower edge A being located near the inner wall of the container body; the sealing ring is an elastic ring and comprises an inner ring connected to the outer circumferential edge of the lower cover, and an outer ring arranged on the outer side wall of the lower edge A, the outer ring being horizontally higher than the inner ring;further comprising: a movable component, wherein the movable component comprises a movable seat provided on the top of the base cover and a movable column fixedly connected to the bottom cover, the base cover being provided with a through-hole, while a through-cavity is provided in the center of the movable seat, the movable column extending through the through-hole and the through-cavity, enabling the movable component of the movable column, by relative movement, to draw the bottom cover closer to or further away from the base cover; in its natural state, the bottom cover is removed from the base cover, a gap exists between the lower edge A and the inner wall of the container body, allowing outside air to enter the container body, with the sealing container being in an unsealed state;The movement of the movable component causes the movable column to rise and pull the lower lid towards the base lid, the sealing ring to rise synchronously, so that the outer ring moves upwards until the gap between the outer edge A and the inner wall of the container body is closed and the sealing container is thus sealed, the lower lid continues to rise so that the air density in the container body is lower than in the outside world and a negative pressure is created, which seals and fixes the base lid firmly onto the container body;When the movable component moves in the opposite direction, the bottom cover is moved downwards under its own weight and / or under the pressure of the movable column, the sealing ring lowers synchronously, so that the outer ring shifts downwards until it no longer seals the gap between the outer edge A and the inner wall of the container body, outside air then flows into the container body, causing the sealing container to return to its natural, unsealed state.

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