CN107878914A - Container cover and vacuum fresh-retaining container - Google Patents

Abstract

The invention provides a container cover and a vacuum fresh-keeping container. The container cover includes a cover body, the cover body is provided with an air pumping chamber, the air pumping chamber has an elastic top wall, and the bottom wall of the air pumping chamber is provided with a through first air hole. , the first air hole is provided with a first one-way valve, the gas flow direction of the first one-way valve is from the container body to the air pumping chamber; the side wall or top wall of the air pumping chamber is provided with a through second air hole , the second air hole is provided with a second one-way valve, and the gas flow direction of the second one-way valve is from the inside of the pumping cavity to the outside of the pumping cavity. The vacuum preservation container includes a body and a container cover arranged at the opening end of the body. The container cover of the invention has the advantages of simple structure, small volume, long service life, low manufacturing and assembly costs, convenient disassembly and easy cleaning.

Description

Container Lids and Vacuum Containers

technical field

The invention relates to the field of vacuum equipment, in particular to a vacuum-pumpable container cover with a simple structure and a vacuum fresh-keeping container with the container cover.

Background technique

Containers are common daily necessities. Common containers include storage jars, storage boxes, storage boxes, fresh-keeping cups, fresh-keeping bottles, etc. Containers generally include a container body and a container cover. Put food, medicine, etc. into the container After being placed in the main body, the container lid is put on, which can well isolate the articles placed in the container main body and prevent dust, air, etc. from entering the container main body. Existing containers can be well sealed to prevent air from entering, so they play a certain role in the preservation of items, but there is a certain amount of air in the container itself, so it is impossible to ensure that the items in the container are in a vacuum state. The storage time is short.

The Chinese invention patent with the publication number CN107031976A discloses a vacuum cover for a storage tank, which includes a cover body. There is a sliding sealing fit between the edge of the block and the inner wall of the chamber and the joint is filled with food-grade lubricant. The vacuum pressing block is composed of a fitted outer handle and an inner handle. A positioning groove is formed at the position where the outer handle and the inner handle fit together. A sealing ring is fitted in the positioning groove. The outer edge of the sealing ring meets the inner wall of the chamber. There is a gap between the inner edge of the sealing ring and the bottom of the positioning groove. When the vacuum pressing block is pressed, the sealing ring is located in the positioning groove and close to the upper edge of the positioning groove. At this time, the vacuum chamber The air is discharged from the exhaust port; when the vacuum pressing block is released, the first return spring pushes the vacuum pressing block to move upward, the sealing ring is located in the positioning groove and is close to the lower edge of the positioning groove, and the exhaust channel is closed. At this time The one-way valve is opened, the air in the storage tank is sucked into the vacuum chamber, and when the vacuum block is pressed again, the one-way valve is closed, the exhaust channel is opened, the air in the vacuum chamber is discharged, and the vacuum is pumped circularly The block is pressed, and finally, the inner cavities of the vacuum chamber and the storage tank are in a vacuum state.

The storage tank is evacuated through the vacuum cover to maintain the vacuum environment in the tank and prolong the storage time of the articles. However, the structure of the vacuum pressing block is complicated, and the production and assembly costs are relatively high, which increases the overall cost of the storage tank. It is necessary to cooperate with the return spring to reset the vacuum pressing block. The return spring is prone to fatigue during repeated use, and the reset effect is reduced, which affects the use of the storage tank. It is necessary to add lubricant between the edge of the vacuum pressing block and the inner wall of the chamber, and the lubricant will be lost during use, which will affect the smoothness of the cooperation between the vacuum pressing block and the chamber; when the liquid is stored in the tank The lubricant may also pollute the liquid; the vacuum cover needs to be cleaned after use, and the lubricant in the cover affects the cleaning effect, and even makes the user mistakenly think that the lubricant is the oil in the cover.

Contents of the invention

The main object of the present invention is to provide a container cap which is simple in structure and does not require the use of lubricants.

Another object of the present invention is to provide a vacuum preservation container equipped with the above-mentioned container cover.

In order to achieve the above-mentioned main purpose, the container cover provided by the present invention includes a cover body, the cover body is provided with an air pumping chamber, the air pumping chamber has an elastic top wall, and the bottom wall of the air pumping chamber is provided with a first air hole penetrating the bottom wall , the first air hole is provided with a first one-way valve, and the gas flow direction of the first one-way valve is from the inside of the container body to the pumping chamber; the first side wall or top wall of the pumping chamber is provided with a first The second air hole on the side wall or the top wall is provided with a second one-way valve, and the gas flow direction of the second one-way valve is from the inside of the pumping cavity to the outside of the pumping cavity.

It can be seen from the above technical solution that after the container cover of the present invention is covered on the container body, by pressing the elastic top wall on the air pumping chamber, the volume of the pumping chamber becomes smaller and the pressure increases. The direction of the gas flow is from the inside of the container body outside the pumping chamber to the pumping chamber, and the gas flow direction of the second one-way valve is from the inside of the pumping chamber to the outside of the pumping chamber. At this time, the air in the pumping chamber It cannot enter the container body through the first one-way valve, and can only be discharged into the external environment through the second one-way valve; during the rebound process of the top wall, the volume of the pumping chamber increases and the pressure decreases, and the external environment The air cannot enter the pumping cavity through the second one-way valve, and the air in the container body enters the pumping cavity through the first one-way valve until the pressure in the pumping cavity is equal to the pressure in the container body. Press the top wall repeatedly, and each time you press the top wall of the air pumping chamber, a part of the air can be extracted from the container body, and finally the air in the container body is almost exhausted, keeping the interior in a vacuum environment, and improving the storage period of the articles. The container cover of the present invention has a simple structure, relies on the self-elasticity of the top wall to rebound, does not need to be provided with a return spring, and does not need to add lubricant inside the container cover, and is easy to clean.

A further solution is that the cover body includes a first cover body and a second cover body arranged on the first cover body, the second cover body is made of elastic material, and the first cover body and the second cover body surround an air suction cavity, the second cover has an arched top wall, and the arched top wall constitutes the top wall of the pumping cavity.

A further solution is that the first cover is provided with an annular installation groove, the second cover also has an annular second side wall, the second side wall is snapped into the installation groove, and the second side wall and the installation groove The junction is provided with a first sealing ring.

It can be seen that the cooperation between the first cover and the second cover is simple, only need to install the second cover on the first cover according to the installation groove, and it is easy to disassemble. The first sealing ring improves the second cover. The airtightness between the first cover and the second cover prevents air leakage.

A further solution is that a first recess is provided on the second side wall, and the first air hole is provided on the first recess; a second recess corresponding to the first recess is provided on the installation groove. The first cover is provided with an air inlet on the outside of the second recess, and an air inlet valve is arranged on the air inlet.

It can be seen that setting the first recessed part and the second recessed part fully uses the space on the first cover and the second cover, and the vacuum environment in the container body can be released through the air inlet valve to facilitate opening the container cover.

A further solution is that the first air hole is provided with an air valve installation position, the air valve installation position is provided with an air valve seat, the first one-way valve is arranged on the air valve seat, and the air valve seat is provided with a fixing ring.

It can be seen that the installation stability of the first one-way valve can be improved by arranging the air valve seat and the fixing ring, making its working process more reliable.

A further solution is that a hemispherical protective cover is provided outside the installation position of the air valve, and a through hole is provided on the protective cover, and the through hole communicates with the first air hole.

It can be seen that setting the protective cover can prevent foreign matter from entering the first air hole and preventing blockage.

In order to achieve the above-mentioned another purpose, the vacuum preservation container provided by the present invention includes a main body and a container cover arranged at the opening end of the main body, the first air hole communicates with the inner cavity of the air pumping chamber and the main body, and the gas flow direction of the first one-way valve is from The inner cavity flows into the suction cavity.

A further solution is that an air valve mounting position is provided on the bottom wall of the air extraction chamber, an air valve seat is provided on the air valve installation site, the first air hole is provided on the air valve seat, and a fixing ring is provided on the air valve seat.

A further solution is that a hemispherical protective cover is provided outside the installation position of the air valve, and a through hole is provided on the protective cover, and the through hole communicates with the first air hole.

Description of drawings

Fig. 1 is an exploded view of the structure of the embodiment of the vacuum preservation container of the present invention.

Fig. 2 is a structural view of the first cover body of the embodiment of the container cover of the present invention.

Fig. 3 is a partial cross-sectional view of the first cap body of the container cap embodiment of the present invention.

Fig. 4 is a structural view of the second cover body of the embodiment of the container cover of the present invention.

Fig. 5 is a structural view of the second one-way valve of the embodiment of the container cap of the present invention.

Fig. 6 is a cross-sectional view of an embodiment of the vacuum preservation container of the present invention.

Fig. 7 is an enlarged view of part A in Fig. 6 .

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Detailed ways

Referring to Fig. 1, Fig. 1 is an exploded view of the structure of the embodiment of the vacuum preservation container of the present invention. The vacuum preservation container includes a main body 1 and a container cover 2 arranged at the opening end of the main body 1 , and a sealing ring 3 is used to seal between the main body 1 and the container cover 2 . In this embodiment, the body 1 is a cylindrical tank, and the body 1 can be made of materials such as glass, metal or plastic, and the shape of the body 1 can be redesigned according to needs, for example, the body 1 can also be designed as an oval , square, etc. The container cover 2 includes a first cover body 21 and a second cover body 22 arranged on the first cover body 21, the first cover body 21 is provided with a first air hole 210 and an air inlet hole 211, and the first one-way valve 23 passes through The air valve seat 24 and the fixing ring 25 are installed in the first air hole 210 , and the air inlet valve 212 is arranged on the air inlet hole 211 . A second air hole 220 is disposed on a side wall of the second cover 22 , and a second one-way valve 26 is disposed on the second air hole 220 .

Referring to Fig. 2 and Fig. 3, Fig. 2 is a structural view of the first cover body of the container cap embodiment of the present invention, and Fig. 3 is a partial cross-sectional view of the first cover body of the container cap embodiment of the present invention. In this embodiment, the first cover 21 is made of plastic (such as polypropylene), the first cover 21 has a disc-shaped structure, and the surface of the first cover 21 is provided with an annular installation groove 213, the installation groove 213 is used to install the second cover 22, the width of the installation groove 213 is greater than the width of the side wall of the second cover 22, the first air hole 210 is located in the area surrounded by the installation groove 213, and the peripheral wall of the installation groove 213 is formed by inward depression The concave portion 214 and the air inlet 211 are located outside the concave portion 214 . Four locking buckles 215 are evenly arranged on the outer edge of the first cover body 21 , and a locking member 216 is disposed on the locking buckles 215 . An annular groove 217 is disposed on the outside of the bottom of the first cover 21 , and the sealing ring 3 is installed in the groove 217 .

The first air hole 210 is provided with an air valve installation position 2110, the air valve installation position 2110 has an annular convex edge, the air valve seat 24 is arranged on the air valve installation position 2110, and the first one-way valve 23 is arranged on the air valve seat 24 , the fixed ring 25 is installed on the upper end of the air valve seat 24 , and the fixed ring 25 is in interference fit with the first air hole 210 . The bottom of the first air hole 210 is provided with a hemispherical protective cover 2111 outside the air valve installation position 2110 , and the protective cover 2111 is provided with a through hole 2112 , and the through hole 2112 communicates with the first air hole 210 .

Referring to FIG. 4 , FIG. 4 is a structural view of the second cover body of the container cover embodiment of the present invention. The second cover 22 is made of elastic material. In this embodiment, the second cover 22 is integrally formed of polypropylene material. The second cover 22 includes an arched top wall 221 and an annular side wall 222 , the side wall 222 is provided with a recessed portion 223 , the recessed portion 214 of the first cover 21 corresponds to the recessed portion 223 of the second cover 22 . The concave portion 223 has a rectangular parallelepiped bottom surface 224 , and the second air holes 220 penetrate through the bottom surface 224 .

Referring to Fig. 5, Fig. 5 is a structural view of the second one-way valve of the embodiment of the container cap of the present invention. In this embodiment, the second one-way valve 26 is made of silicone material, and the second one-way valve 26 includes a plug body part 260 and a clamping part 261, and a cylindrical The connecting portion 262 of the connecting portion 261 is provided with a tail portion 263 extending in the axial direction at the end of the engaging portion 261, and the tail portion 263 is tapered. The lower end surface of the plug body portion 260 is configured as a tapered fitting surface 2601, and the fitting surface 2601 is a smooth surface. The engaging portion 261 is provided with a communication groove 2610 penetrating through the upper surface and the lower surface of the engaging portion 261 .

Referring to Fig. 6, Fig. 6 is a cross-sectional view of an embodiment of the vacuum preservation container of the present invention. Install the assembled container cover 2 on the main body 1, turn the lock 215 on the first cover 21, and lock the locking member 216 on the hooking part 10 of the main body 1, the main body 1 and the first cover The sealing ring 3 is used to seal between the bodies 21 . Between the first cover body 21 and the second cover body 22, a sealed air pumping chamber 100 is formed, the first air hole 210 is located at the bottom of the air pumping chamber 100, the second air hole 220 is located on the side wall of the air pumping chamber 100, and the second The top wall 221 of the cover 22 constitutes the top wall of the pumping chamber 100 .

When pressing the top wall 221 along the direction of the force F in Fig. 6, because the top wall 221 has a certain elasticity, the top wall 221 is deformed and the air pumping chamber 100 is compressed, the volume of the air pumping chamber 100 becomes smaller, and the air pressure Increase, the pressure in the air extraction cavity 100 is higher than the pressure in the inner cavity 11 of the body 1, and the air in the air extraction cavity 100 exerts downward pressure on the first one-way valve 23, so that the pressure on the first one-way valve 23 The plug body portion 230 is closely attached to the upper end of the air valve seat 24, and closes the through hole on the air valve seat 24, so that the first air hole 210 is in a closed state. The pressure in the air extraction chamber 100 is also greater than the external pressure, and the air in the air extraction chamber 100 exerts a thrust to the left on the second one-way valve 26, so that the plug body portion 260 on the second one-way valve 26 is released from the second air hole. The surface of 220 is separated, and the air in the suction chamber 100 is discharged to the outside through the communication groove 2610 on the clamping part 261 (see FIG. 5 ), the gap between the second air hole 220 and the plug body 260 in sequence.

When the top wall 221 is deformed to a certain extent, the force F is removed, and the top wall 221 rebounds under its own elastic force, the volume of the air pumping chamber 100 becomes larger, and the air pressure becomes smaller. At this time, the external pressure is stronger than that of the air pumping chamber 100, the outside air exerts a rightward thrust on the second one-way valve 26, so that the plug body part 260 on the second one-way valve 26 is close to the surface of the second air hole 220, so that the second air hole 220 is in the Disabled. At the same time, the pressure in the inner cavity 11 of the main body 1 is also greater than the pressure in the suction cavity 100, and the air in the inner cavity 11 exerts an upward thrust on the first one-way valve 23, so that the plug of the first one-way valve 23 The body part 230 is separated from the surface of the air valve seat 24, so that the second air hole 211 is in an open state, and the air in the inner chamber 11 enters the air extraction chamber 100 through the second air hole 211 until the pressure in the air extraction chamber 100 is equal to that of the inner chamber. The pressure inside 11 is equal, and when the top wall 221 returns to its original state, part of the air in the inner cavity 11 is drawn into the air extraction cavity 100 . Then force F is applied again. After repeated pressing for many times, the air in the inner cavity 11 is almost exhausted, and the inside of the main body 1 is almost in a vacuum environment, which is conducive to the fresh-keeping storage of the articles placed in the main body 1 and has a long storage time. When the container cover needs to be opened, the air intake valve 212 is opened to a certain gap on the air intake hole 211, the air enters the inner cavity 11 through the air intake hole 211, and the vacuum environment in the main body 1 is released, so that the container cover 2 is easy to open. Open from body 1.

It can be seen that the gas flow direction of the first one-way valve 23 is to flow from the inner chamber 11 to the pumping cavity 100 (that is, flow from the outside of the pumping cavity to the pumping cavity), and the gas flow direction of the second one-way valve 26 is It is the flow from the inside of the pumping cavity 100 to the outside of the pumping cavity 100 (that is, the flow from the inside of the pumping cavity to the outside of the pumping cavity). The flow direction of the air at the first one-way valve 23 place is one-way, can only enter in the suction chamber 100 from the inner chamber 11, can't enter in the inner chamber 11 from the suction chamber 100; The flow direction of the air is also unidirectional, and it can only enter the external environment from the air extraction cavity 100 , but cannot enter the air extraction cavity 100 from the external environment.

Because the container cover of the present invention utilizes the self-resilient performance of the top wall of the second cover body, it is not necessary to arrange back-moving springs in the air pumping cavity, nor does it need to add lubricant in the container cover. The structure of the container cover of the present invention Very simple, low assembly and production costs, easy to clean.

Referring to Fig. 7, Fig. 7 is an enlarged view of part A in Fig. 6 . After the second cover body 22 is formed, it is subjected to secondary rubber encapsulation, and a ring sealing ring 225 is formed at the bottom of the side wall 222 of the second cover body 22, and the sealing ring 225 seals against the junction of the side wall 222 and the installation groove 213. Sealing, the sealing ring 225 is interference fit with the installation groove 213, the cooperation between the second cover 22 and the first cover 21 is simple, the loading and unloading of the first cover 21 and the second cover 22 is simple, and it is convenient to carry out the inside of the container cover. cleaning.

Certainly, above-mentioned embodiment is only preferred embodiment of the present invention, also can have more changes during actual application, for example, the simple change of the size and shape of vacuum preservation container; Or the change of the material of container cover; Two one-way valves are arranged on the top wall of the second cover, and so on. These changes can also achieve the purpose of the present invention, and within the spirit and principles of the present invention, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the claims of the present invention.

Claims (10)

1. container cover, including lid, it is characterised in that：

It is provided with pumping chamber on the lid, the flexible roof of pumping chamber, is provided with the bottom wall of the pumping chamber Through the first stomata of the bottom wall, the first check valve, the gas stream of first check valve are provided with first stomata Dynamic direction is to be flowed from the export-oriented pumping chamber of the pumping chamber；It is provided with and passes through on the first side wall or roof of the pumping chamber The second stomata of the first side wall or the roof is worn, the second check valve is provided with second stomata, described second is single It is to be flowed from the pumping chamber to outside the pumping chamber to the gas flow direction of valve.

2. container cover according to claim 1, it is characterised in that：

The lid includes the first lid and the second lid being arranged on first lid, and second lid is by elasticity Material is made, and first lid and second lid surround the pumping chamber, and second lid has the roof of arch, The roof of the arch forms the roof of the pumping chamber.

3. container cover according to claim 2, it is characterised in that：

It is provided with the mounting groove of annular on first lid, second lid also has a second sidewall of annular, and described the Two side walls are connected in the mounting groove, and the second sidewall and the joint of the mounting groove are provided with the first sealing ring.

4. container cover according to claim 3, it is characterised in that：

The first depressed part is provided with the second sidewall, first stomata is arranged on first depressed part；

Corresponding with first depressed part the second depressed part is provided with the mounting groove.

5. container cover according to claim 4, it is characterised in that：

First lid is provided with air admission hole on the outside of second depressed part, and intake valve is provided with the air admission hole.

6. according to the container cover described in any one of claim 1 to 5, it is characterised in that：

Air valve installation position is provided with first stomata, air valve seat is provided with the air valve installation position, described first is unidirectional Valve is arranged in the air valve seat, and retainer ring is provided with the air valve seat.

7. container cover according to claim 6, it is characterised in that：

Hemispheric protective cover is provided with the outside of the air valve installation position, through hole, the through hole are provided with the protective cover Connected with first stomata.

8. vacuum fresh-retaining container, including body and be arranged on the body openend container cover, it is characterised in that：

The container cover using the container cover described in any one of claim 1 to 5, first stomata connect the pumping chamber and The inner chamber of the body, the gas flow direction of first check valve are to be flowed from the inner chamber into the pumping chamber.

9. vacuum fresh-retaining container according to claim 8, it is characterised in that：

Air valve installation position is provided with the bottom wall of the pumping chamber, is provided with air valve seat on the air valve installation position, described first Stomata is arranged in the air valve seat, and retainer ring is provided with the air valve seat.

10. vacuum fresh-retaining container according to claim 9, it is characterised in that：

Hemispheric protective cover is provided with the outside of the air valve installation position, through hole, the through hole are provided with the protective cover Connected with first stomata.