阅读说明：本技术 分级泄压盖 (Grading pressure relief cover ) 是由 刘军键 李洋 胡杨海 刘润军 刘恺 朱飞 于 2020-06-08 设计创作，主要内容包括：本发明公开了一种分级泄压盖,包括螺接于容器上端口的盖体,上盖与盖体的侧壁及盖底围成缓冲空腔,在缓冲空腔的中部设有泄压组件,泄压组件包括：泄压阀、排气键和泄压弹簧,泄压阀由弹性材料制成,其下端口的裙边盖设于盖底的排气孔上,其上端面支撑于盖底的中心柱和环绕该中心柱的支撑柱上,排气键上部的环形外沿与出气孔边沿之间设有由弹性材料制成的圆环形密封圈,在圆环形密封圈的上表面设有通槽,上端面与排气键之间设有泄压弹簧,排气键之围骨的下端抵触于中心柱与支撑柱之间的上端面上。本发明的分级泄压盖,既能够确保容器的密封性能,提升杯、壶的加热效率,又可以避免因蒸汽和水夹杂喷涌而出造成的烫伤风险,增加安全性。(The invention discloses a graded pressure relief cover, which comprises a cover body screwed on an upper port of a container, wherein the upper cover, the side wall of the cover body and the cover bottom enclose a buffer cavity, the middle part of the buffer cavity is provided with a pressure relief assembly, and the pressure relief assembly comprises: the pressure release valve is made of elastic materials, a skirt cover of a lower end port of the pressure release valve is arranged on an exhaust hole of the cover bottom, the upper end face of the pressure release valve is supported on a central column of the cover bottom and a support column surrounding the central column, a circular ring-shaped sealing ring made of elastic materials is arranged between an annular outer edge of the upper portion of the exhaust key and the edge of an air outlet hole, a through groove is formed in the upper surface of the circular ring-shaped sealing ring, the pressure release spring is arranged between the upper end face and the exhaust key, and the lower end of a surrounding bone of the exhaust key abuts against the upper end face between the. The grading pressure relief cover can ensure the sealing performance of the container, improve the heating efficiency of the cup and the kettle, avoid the scalding risk caused by the mixed gushing of steam and water and increase the safety.)

1. The utility model provides a hierarchical pressure release lid, includes lid (6) of spiro union in container upper port, its characterized in that, the upper port of lid (6) is equipped with upper cover (1), enclose into buffer cavity (8) that are used for the pressure release at the bottom of lateral wall and the lid (6-4) of upper cover (1) and lid (6) the middle part of buffer cavity (8) is equipped with the pressure release subassembly, the pressure release subassembly includes: the pressure release valve (5), the exhaust key (3) and the pressure release spring (4), the pressure release valve (5) is made of elastic materials, the skirt edge (5-1) of the lower port of the pressure release valve is covered on the exhaust hole (6-3) of the cover bottom (6-4), the upper end surface (5-4) of the pressure release valve is supported on the center post (6-2) of the cover bottom (6-4) and the support post (6-1) surrounding the center post (6-2), a circular ring-shaped sealing ring (2) made of elastic materials is arranged between the annular outer edge (3-1) of the upper part of the exhaust key (3) and the edge of the air outlet hole (1-1), a through groove (2-1) is arranged on the upper surface of the circular ring-shaped sealing ring (2), the pressure release spring (4) is arranged between the upper end surface (5-4) and the exhaust key (3), and the lower end of the surrounding bone (3-2) of the exhaust key (3) is abutted 1) On the upper end face (5-4) between the two.

2. The stepped pressure relief cover according to claim 1, wherein: the annular sealing ring and the pressure release valve (5) are both made of food-grade silicon rubber materials.

3. The stepped pressure relief cover according to claim 2, wherein: and a sealing ring (7) for sealing the upper port of the container is arranged at the lower end of the cover body (6).

4. The stepped pressure relief cover according to claim 3, wherein: the exhaust holes (6-3) are distributed uniformly along the circumference.

5. The stepped pressure relief cover according to claim 4, wherein: a spring positioning column (5-3) for positioning the pressure relief spring (4) is arranged on the upper end surface (5-4); an exhaust key spring positioning column (3-3) used for positioning the pressure relief spring (4) is arranged on the inner side of the upper end face of the exhaust key (3).

6. The stepped pressure relief cover according to claim 5, wherein: and an assembly hole (5-2) for accommodating the central column (6-2) is formed in the upper surface of the upper end surface (5-4).

Technical Field

The invention relates to a cover of a cup and a kettle, in particular to a graded pressure relief cover of the cup and the kettle.

Background

Cup and kettle products in the market, in particular to vacuum cups, thermos kettles, electric heating cups and other products with heat preservation requirements, are generally sealed structures; and some of the containers may have a venting function, that is, when venting is needed, the inner space and the outer space of the container are communicated after the corresponding button is pressed, and the pressure in the container is released. However, the exhaust structure of these products is generally straight-through type, and the exhaust will not be performed in stages, if the exhaust is performed with a large pressure in the container, the steam will be mixed with hot water and gush out from the channel, which is easy to scald the exposed parts of the consumer's hands, face, etc.

Disclosure of Invention

The invention aims to provide a graded pressure relief cover, which can ensure the sealing performance of a container, improve the heating efficiency of a cup and a kettle, avoid the risk of scalding caused by mixed gushing of steam and water and increase the safety.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a hierarchical pressure release lid, includes the lid of spiro union in container upper port, the upper port of lid is equipped with the upper cover, enclose into the buffering cavity that is used for the pressure release at the bottom of the lateral wall of upper cover and lid and the lid the middle part of buffering cavity is equipped with the pressure release subassembly, the pressure release subassembly includes: the pressure release valve is made of elastic materials, a skirt cover of a lower end opening of the pressure release valve is arranged on an exhaust hole of the cover bottom, the upper end face of the pressure release valve is supported on a central column of the cover bottom and a support column surrounding the central column, a circular ring-shaped sealing ring made of elastic materials is arranged between an annular outer edge of the upper portion of the exhaust key and the edge of an air outlet hole, a through groove is formed in the upper surface of the circular ring-shaped sealing ring, the pressure release spring is arranged between the upper end face and the exhaust key, and the lower end of a surrounding bone of the exhaust key abuts against the upper end face between the central.

The annular sealing ring and the pressure release valve are both made of food-grade silicon rubber materials.

And a sealing ring for sealing the upper port of the container is arranged at the lower end of the cover body.

The exhaust hole has a plurality ofly, along circumference equipartition.

A spring positioning column for positioning the pressure relief spring is arranged on the upper surface of the upper end surface; the inside of the upper end surface of the exhaust key is provided with an exhaust key spring positioning column for positioning the pressure relief spring.

And an assembly hole for accommodating the central column is formed in the upper surface of the upper end surface.

Compared with the prior art, the invention has the beneficial effects that: by adopting the technical scheme, the skirt edge of the pressure release valve has elasticity, when the pressure in the container is higher, the pressure can break the blockage of the skirt edge on the vent hole, and the steam pressure in the container is firstly discharged from the vent hole to the buffer cavity so as to reduce the pressure in the container, which is primary pressure release; under the elastic force action of the pressure relief spring, the through groove on the upper surface of the annular sealing ring is extruded to be in a closed state, the annular sealing ring can also play a sealing role, the buffer cavity is not communicated with the atmosphere, and even if water exists in the buffer cavity, the problem of water leakage is avoided; when the exhaust key is lightly pressed or in the initial stage of pressing the exhaust key, the annular sealing ring is free from extrusion, the through groove is in an open channel state, the buffer space is communicated with the atmosphere through the through groove and the air outlet, so that secondary pressure relief is realized, the secondary pressure relief is realized by slowly relieving pressure through the through groove, the scalding risk caused by the mixed gushing of steam and water due to the fact that the opened exhaust channel is too large is avoided, and the safety is improved; then, the exhaust key is pressed downwards continuously, so that the surrounding bone of the exhaust key downwards presses the upper end face between the central column and the supporting column (namely the shoulder of the upper end face downwards), the upper end face is concave under the action of the central column and the supporting column, the skirt edge is turned upwards, the exhaust hole is completely opened, the annular sealing ring is completely separated from the upper cover, the pressure relief passage is completely opened, the pressure relief is three-level pressure relief, the pressure in the container is reduced, the pressure of the buffer cavity is exhausted, and finally the phenomenon of steam and water spraying can be avoided. The three-stage buffer decompression ensures that steam and water cannot gush out from the air outlet hole, thereby avoiding the risk of scalding; the sealing performance of the container can be ensured, the heating efficiency of the cup and the kettle is improved, the hot water leakage can be avoided, and the portability of the structural product can be further ensured.

The further beneficial effects are that: the annular sealing ring and the pressure release valve are both made of food-grade silicon rubber materials, so that the edible safety of water and food contacted with the annular sealing ring and the pressure release valve can be ensured; the elasticity and sealing requirements of the pressure release valve and the annular sealing ring are met; the service life of the pressure release valve and the annular sealing ring can be prolonged.

The grading pressure relief cover has wide applicability, and can be suitable for cup and kettle products such as vacuum cups, thermos kettles, electric heating cups and the like.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the disassembled structure of FIG. 1;

FIG. 3 is a schematic diagram of the relief valve of FIG. 1;

FIG. 4 is a schematic view of the relief gasket of FIG. 1;

FIG. 5 is a schematic view of the stepped pressure relief closure of the present invention mounted to the upper port of a container;

FIG. 6 is a schematic view of a one-stage pressure relief state structure of the staged pressure relief cover;

FIG. 7 is a schematic view of a two-stage pressure relief state structure of the staged pressure relief cover;

fig. 8 is a three-stage pressure relief state structure diagram of the stepped pressure relief cover.

Detailed Description

In order to make the technical solution of the present invention clearer, the present invention will be described in detail below with reference to fig. 1 to 8. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

The invention relates to a graded pressure relief cover, which comprises a cover body 6 screwed on an upper port of a container 9, wherein an upper cover 1 is arranged on the upper port of the cover body 6, a buffer cavity 8 for pressure relief is enclosed by the upper cover 1, the side wall of the cover body 6 and a cover bottom 6-4, a pressure relief assembly is arranged in the middle of the buffer cavity 8, and the pressure relief assembly comprises: a pressure release valve 5, an exhaust key 3 and a pressure release spring 4; the pressure release valve 5 is made of elastic materials, a skirt edge 5-1 at the lower end of the pressure release valve covers an exhaust hole 6-3 of the cover bottom 6-4, and the upper end surface 5-4 of the pressure release valve is supported on a central column 6-2 of the cover bottom 6-4 and a support column 6-1 surrounding the central column 6-2; an annular sealing ring 2 made of elastic materials is arranged between an annular outer edge 3-1 at the upper part of the exhaust key 3 and the edge of an air outlet 1-1, a plurality of through grooves 2-1 are arranged on the upper surface of the annular sealing ring 2, and the through grooves 2-1 are extruded and closed under the action of the elastic force of a pressure relief spring 4; a pressure relief spring 4 is arranged between the upper end face 5-4 and the exhaust key 3, and the lower end of the surrounding bone 3-2 of the exhaust key 3 is abutted against the upper end face 5-4 between the central column 6-2 and the supporting column 6-1.

Preferably, the annular sealing ring and the pressure release valve 5 are both made of food-grade silicon rubber materials. And a sealing ring 7 for sealing the upper end of the container is arranged at the lower end of the cover body 6. The exhaust holes 6-3 are distributed uniformly along the circumference. A spring positioning column 5-3 for positioning the pressure relief spring 4 is arranged on the upper end surface 5-4; an exhaust key spring positioning column 3-3 for positioning the pressure relief spring 4 is arranged on the inner side of the upper end face of the exhaust key 3. And an assembly hole 5-2 for accommodating the central column 6-2 is formed in the upper surface of the upper end surface 5-4. In order to improve the sealing effect, an annular groove 5-4-1 can be arranged at the contact part of the upper end surface 5-4 and the lower end of the surrounding bone 3-2.

The container 9 in the above schemes refers to a cup or a pot product, especially a thermos cup, a thermos bottle, an electric kettle, an electric cup and other products with heat preservation and/or heating requirements.