CN209306157U - Connection structure of liquid plastic bottle and bottle cap - Google Patents

Abstract

The utility model discloses a connection structure between a liquid plastic bottle and a bottle cap, which comprises a bottle cap and a bottle mouth. The inner surface of the bottle cap is provided with a first sealing thread, and the outer surface of the bottle mouth is provided with a second sealing thread. The bottle cap is set on the bottle mouth through the first sealing thread and the second sealing thread cap that cooperate with each other. The inner top plate of the bottle cap is laid with a gasket. When the bottle cap is screwed on the bottle mouth, the upper edge of the bottle mouth will The gasket is pressed to deform, and the lower part of the bottle mouth is provided with a bottle shoulder. After the first sealing thread and the second sealing thread cooperate to form a sealing structure, the deformed gasket forms a sealing structure with the upper edge of the bottle mouth. The deformed sealing ring forms a sealing structure with the shoulder of the bottle, and the triple sealing structure greatly improves the sealing performance of the plastic bottle, and has higher reliability when containing volatile liquids.

Description

Connection structure of liquid plastic bottle and bottle cap

technical field

The utility model relates to the technical field of plastic bottles, in particular to a connection structure between a liquid plastic bottle and a bottle cap.

Background technique

At present, the sealing technology of bottle caps is various and perfect day by day, which can well meet the needs of people's daily life. At present, the common PE plastic bottles on the market generally adopt single sealing, that is, the inner top of the bottle cap is sealed with the top of the bottle mouth. There are also double-sealed plastic bottles, that is, the inner top of the bottle cap is sealed with the top of the bottle mouth, and the inner ring plug of the bottle cap is sealed with the bottle mouth in a gradient manner. Plastic bottles using these two sealing methods are only suitable for general liquids. Food and beverage packaging, such as liquid medicine or experimental reagent packaging, the sealing performance is not reliable enough.

Utility model content

The technical problem to be solved by the utility model is to overcome the existing defects, provide a connection structure between the liquid plastic bottle and the bottle cap, and adopt a triple sealing structure, which greatly improves the sealing performance of the plastic bottle, and is more reliable when containing volatile liquids. High, can effectively solve the problems in the background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a connection structure between a liquid plastic bottle and a bottle cap, including a bottle cap and a bottle mouth, the inner surface of the bottle cap is provided with a first sealing thread, and the outer surface of the bottle mouth The side is provided with a second sealing thread, and the bottle cap is set on the bottle mouth through the first sealing thread and the second sealing thread cap that cooperate with each other. A gasket is laid on the inner top plate of the bottle cap. At this time, the upper edge of the bottle mouth presses the gasket until it is deformed, and the lower part of the bottle mouth is provided with a bottle shoulder.

As a preferred technical solution of the present invention, the gasket is made of silica gel.

As a preferred technical solution of the utility model, the spacer is a circular sheet whose size is consistent with the inner diameter of the bottle cap, and the spacers are thin and the edges are thick.

As a preferred technical solution of the present invention, the lower edge of the bottle cap is provided with a "convex" shaped groove, and a sealing ring is embedded in the groove. When the bottle cap is screwed tightly on the bottle mouth, the bottle cap will seal The ring presses against the shoulder of the bottle and deforms it.

As a preferred technical solution of the present invention, the sealing ring is made of silica gel.

Compared with the prior art, the utility model has the beneficial effects that: the connection structure between the liquid plastic bottle and the bottle cap adopts a triple sealing structure, which greatly improves the sealing performance of the plastic bottle, and is more reliable when containing volatile liquids. high.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic diagram of the bottle mouth structure of the utility model;

Fig. 3 is a structural schematic diagram of the bottle cap of the present invention.

In the figure: 1 bottle cap, 2 bottle mouth, 3 gasket, 4 sealing ring, 5 first sealing thread, 6 second sealing thread, 7 bottle shoulder.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-3, the utility model provides a technical solution: the connection structure between the liquid plastic bottle and the bottle cap, including the bottle cap 1 and the bottle mouth 2, the inner surface of the bottle cap 1 is provided with a first sealing thread 5, the bottle The outer surface of the mouth 2 is provided with a second sealing thread 6, and the bottle cap 1 is set on the bottle mouth 2 through the first sealing thread 5 and the second sealing thread 6 that cooperate with each other. The first sealing thread 5 and the second sealing thread 6 After matching, it becomes a sealed structure. The inner top plate of the bottle cap 1 is laid with a gasket 3. When the bottle cap 1 is screwed tightly on the bottle mouth 2, the upper edge of the bottle mouth 2 presses the gasket 3 until it is deformed. The last gasket 3 forms a sealing structure with the upper edge of the bottle mouth 2. The gasket 3 is made of silica gel material. The silica gel is soft, easy to deform, and has stable chemical properties. The gasket 3 is a circle whose size is consistent with the inner diameter of the bottle cap 1. Shaped sheet, the thin edge between the gaskets 3 is thick, the edge of the gasket 3 has enough deformation while saving the manufacturing cost, the bottom of the bottle mouth 2 is provided with a bottle shoulder 7, the lower edge of the bottle cap 1 There is a "convex" shaped groove, and a sealing ring 4 is embedded in the groove. When the bottle cap 1 is screwed tightly on the bottle mouth 2, the bottle cap 1 presses the sealing ring 4 on the bottle shoulder 7 and deforms it. The deformed sealing ring 4 forms a sealing structure with the bottle shoulder 7, and the sealing ring 4 is made of silica gel material.

When in use: the first sealing thread 5 and the second sealing thread 6 cooperate to form a sealing structure, the deformed gasket 3 forms a sealing structure with the upper edge of the bottle mouth 2, and the deformed sealing ring 4 and the bottle shoulder 7 Forming a sealed structure, a triple-sealed structure, greatly improves the sealing performance of plastic bottles, and has higher reliability when containing volatile liquids.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (5)

1. The connection structure between the liquid plastic bottle and the bottle cap, including the bottle cap (1) and the bottle mouth (2), characterized in that: the inner surface of the bottle cap (1) is provided with a first sealing thread (5), the bottle The outer surface of the mouth (2) is provided with a second sealing thread (6), and the bottle cap (1) is set on the bottle mouth (2) through the first sealing thread (5) and the second sealing thread (6) that cooperate with each other , the inner top plate of the bottle cap (1) is laid with a gasket (3), when the bottle cap (1) is screwed on the bottle mouth (2), the upper edge of the bottle mouth (2) pushes the gasket (3) ) is pressed to deform, and the lower part of the bottle mouth (2) is provided with a bottle shoulder (7). 2. The connection structure between the liquid plastic bottle and the bottle cap according to claim 1, characterized in that: the gasket (3) is made of silicone material. 3. The connection structure between the liquid plastic bottle and the bottle cap according to claim 1, characterized in that: the gasket (3) is a circular sheet whose size is consistent with the inner diameter of the bottle cap (1), and the gasket (3) Thin between the edges and thick. 4. The connection structure between the liquid plastic bottle and the bottle cap according to claim 1, characterized in that: the lower edge of the bottle cap (1) is provided with a "convex" shaped groove, and a sealing ring is embedded in the groove (4), when the bottle cap (1) is tightened on the bottle mouth (2), the bottle cap (1) presses the sealing ring (4) on the bottle shoulder (7) and deforms it. 5. The connection structure between the liquid plastic bottle and the bottle cap according to claim 4, characterized in that: the sealing ring (4) is made of silicone material.