CN220549485U - Food container emptying equipment and food fresh-keeping device - Google Patents

Abstract

The utility model discloses food container emptying equipment and a food fresh-keeping device. The food container emptying device comprises an exhaust pipe and a soft rubber sleeve, wherein the soft rubber sleeve comprises an elastic expansion sleeve sleeved on the outer side of the exhaust pipe; the elastic expansion sleeve is connected with the exhaust pipe, the upper part of the soft rubber sleeve is connected with a sealing plug which is used for being matched with the food storage container in a sealing way, and the upper part of the elastic expansion sleeve is provided with a first air inlet. The food fresh-keeping device comprises a food storage container and food container emptying equipment, wherein an exhaust pipe and an elastic expansion sleeve of the food container emptying equipment extend into the food storage container from an opening of the food storage container, and the sealing plug is arranged at the opening of the food storage container. The food container emptying device and the food fresh-keeping device provided by the utility model have good emptying effect, and can ensure that the vacuum state in the container is not required to be destroyed every time food is taken out.

Description

Food container emptying equipment and food fresh-keeping device

Technical Field

The utility model relates to the field of food preservation, in particular to food container emptying equipment and a food preservation device.

Background

After eating the food contained by the container, the storage container for the food is typically resealed in order to avoid premature wetting or spoilage of the food. The current food sealing and fresh-keeping mode generally adopts filling inert gas or vacuumizing. The inert gas is filled to replace air, so that the food deterioration problem can be relieved to the greatest extent, but the price of each bottle of inert gas is high, and the household use is not facilitated. Therefore, the food preservation method by vacuumizing is more cost-effective for users taking families as a unit. However, the current food container vacuumizing device mainly aims at solid foods, has poor vacuumizing effect on liquid (such as red wine and the like) products, and is difficult to completely discharge air in the container. In addition, after the air in the food container is exhausted, the vacuum state in the container still needs to be destroyed firstly when the food container is needed to be eaten again next time by the traditional vacuumizing equipment, new air and oxygen can enter the container, the fresh-keeping effect is poor, and especially for the red wine, which is a product in which chemical substances react rapidly once being exposed to the air, the optimal taste of the red wine cannot be tasted every time by a user.

Disclosure of Invention

The utility model aims to provide a food container emptying device and a food fresh-keeping device, which have good emptying effect and can ensure that the vacuum state in the container is not required to be destroyed every time food is taken out.

In order to achieve the above object, the present utility model provides a food container emptying device, comprising an exhaust pipe and a flexible rubber sleeve, wherein the flexible rubber sleeve comprises an elastic expansion sleeve sleeved outside the exhaust pipe; the elastic expansion sleeve is connected with the exhaust pipe, the upper part of the soft rubber sleeve is connected with a sealing plug which is used for being matched with the food storage container in a sealing way, and the upper part of the elastic expansion sleeve is provided with a first air inlet.

As a further improvement of the utility model, the exhaust pipe is connected with a vacuumizing assembly.

As a further improvement of the utility model, the vacuumizing assembly comprises a pump body and a first liquid outlet pipe which are sequentially communicated; the air outlet end of the exhaust pipe is communicated with the input end of the pump body; the air extracting pump is a manual pump or an electric pump; the exhaust pipe and/or the first liquid outlet pipe is/are connected with a one-way valve, or the pump body is a pump with a non-return function.

As a further improvement of the utility model, the pump body is an electric pump; the vacuumizing assembly further comprises a first connecting pipe, a first shell, a first battery, a first switch and a first circuit board; the air outlet end of the exhaust pipe, the first connecting pipe and the pump body are sequentially communicated; the first connecting pipe, the pump body, the first liquid outlet pipe, the first battery and the first circuit board are all arranged on the first shell, and the first battery, the first switch and the pump body are all electrically connected with the first circuit board.

As a further improvement of the utility model, the soft rubber sleeve further comprises a sealing plug mounting sleeve connected above the elastic expansion sleeve; the sealing plug comprises an interface, a flange plate and a sealing plug main body which are sequentially connected from top to bottom, and the air outlet end of the exhaust pipe penetrates through the sealing plug main body from bottom to top and is communicated with one end of the interface; the other end of the interface is communicated with the input end of the first connecting pipe; the outside of the sealing plug body is provided with a clamping flange; the sealing plug mounting sleeve is sleeved on the outer side of the flange plate; the sealing plug is also provided with a second air inlet which sequentially penetrates through the flange plate and the sealing plug main body, and the second air inlet is communicated with the first air inlet of the elastic expansion sleeve.

As a further improvement of the utility model, the first air inlet of the elastic expansion sleeve is connected with an air injection assembly.

As a further improvement of the utility model, the gas injection assembly comprises a gas injection pump, and the gas outlet end of the gas injection pump is communicated with the first gas inlet; the gas injection pump is an electric pump or a manual pump; the exhaust pipe is connected with a second liquid outlet pipe, and a one-way valve is arranged on the exhaust pipe and/or the second liquid outlet pipe, or the gas injection pump is a pump with a non-return function.

As a still further improvement of the present utility model, the gas injection assembly further includes a second connection pipe, a second housing, a second battery, a second switch, and a second circuit board; the air outlet end of the air injection pump is communicated with the first air inlet through a second connecting pipe; the second connecting pipe, the gas injection pump, the second battery and the second circuit board are all arranged on the second shell, and the second battery, the second switch and the gas injection pump are all electrically connected with the second circuit board.

As a further improvement of the utility model, the soft rubber sleeve further comprises a sealing plug mounting sleeve connected above the elastic expansion sleeve; the sealing plug comprises an interface, a flange plate and a sealing plug main body which are sequentially connected from top to bottom, and the air outlet end of the exhaust pipe penetrates through the sealing plug main body from bottom to top and is communicated with one end of the interface; the other end of the interface is communicated with a second liquid outlet pipe; the outside of the sealing plug body is provided with a clamping flange; the sealing plug mounting sleeve is sleeved on the outer side of the flange plate; the sealing plug is also provided with a second air inlet which sequentially penetrates through the flange plate and the sealing plug main body, and the second air inlet is connected between the second connecting pipe and the first air inlet.

In order to achieve the above purpose, the utility model also provides a food fresh-keeping device, which comprises a food storage container and a food container emptying device, wherein the exhaust pipe and the elastic expansion sleeve of the food container emptying device extend into the food storage container from the opening of the food storage container, and the sealing plug is arranged at the opening of the food storage container.

Advantageous effects

Compared with the prior art, the food container emptying device and the food fresh-keeping device have the advantages that:

1. when the air in the food storage container is pumped out through the exhaust pipe, the elastic expansion sleeve is driven to expand due to negative pressure generated in the container, and external air sequentially enters the space between the elastic expansion sleeve and the exhaust pipe from the second air inlet on the sealing plug and the first air inlet of the elastic expansion sleeve. The gas in the food storage container can be discharged, the effect of the liquid food is better, the original vacuum sealing state of the food storage container is not required to be destroyed when the food in the container is needed to be continuously taken out next time, the deterioration of the food in the container caused by frequent contact with air is avoided, the long-time storage of the food is facilitated, and the original flavor of the food is kept as much as possible. Similarly, by injecting air into the elastic expansion sleeve to expand the elastic expansion sleeve, the gas in the food storage container can be discharged from the exhaust pipe, and the effect is equivalent.

2. Through setting up the evacuation assembly, not only can utilize the pump body to realize taking out the vacuum to food storage container, but also can utilize the pump body to take out food of storing in the container and eat, convenient operation. Similarly, by arranging the gas injection assembly, the food storage container can be emptied by using the gas injection pump, and food stored in the container can be discharged from the liquid outlet pipe for eating.

3. Through setting up the check valve, perhaps adopting the pump that has the non return function, can avoid outside air and inside food contact after the use, further avoid food deterioration.

The utility model will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of the food container evacuation device of example 1;

fig. 2 is one of the perspective views of the sealing plug of example 1;

fig. 3 is a second perspective view of the sealing plug of example 1;

fig. 4 is a sectional view of the food preservation apparatus of embodiment 1;

FIG. 5 shows one of the evacuated states of the food storage container of example 1;

FIG. 6 is a second vacuumized state of the food-storing container of example 1;

FIG. 7 is a third vacuumized state of the food-storage container of example 1;

FIG. 8 is a cross-sectional view of the food container evacuation device of example 2;

fig. 9 is one of the perspective views of the sealing plug of embodiment 2;

fig. 10 is a second perspective view of the sealing plug of example 2;

FIG. 11 is a sectional view of the food preservation apparatus of example 2;

FIG. 12 is a view showing one of the evacuated states of the food storage container of example 2;

FIG. 13 is a second vacuumized state of the food-storing container of example 2;

FIG. 14 is a third vacuumized food storage container of example 2.

Detailed Description

Embodiments of the present utility model will now be described with reference to the accompanying drawings.

Examples

The embodiment of the utility model is shown in fig. 1 to 7, a food container emptying device comprises an exhaust pipe 1 and a flexible rubber sleeve 2, wherein the flexible rubber sleeve 2 comprises an elastic expansion sleeve 21 sleeved outside the exhaust pipe 1. The soft rubber sleeve 2 can be made of high-elasticity materials. The bottom of the elastic expansion sleeve 21 is connected with the lower part of the exhaust pipe 1, the upper part of the soft rubber sleeve 2 is connected with the sealing plug 3 which is used for being in sealing fit with the food storage container 6, and the upper part of the elastic expansion sleeve 21 is provided with a first air inlet 23 which is communicated with the inner space of the elastic expansion sleeve.

The exhaust pipe 1 is connected with a vacuumizing assembly 4. In this embodiment, the vacuum pumping assembly 4 includes a pump body 42 and a first liquid outlet pipe 43 that are sequentially connected. The outlet end of the exhaust pipe 1 communicates with the input end of the pump body 42. The pump body 42 is a manual pump or an electric pump. The exhaust pipe 1 and/or the first liquid outlet pipe 43 is connected with a one-way valve 5, or the pump body 42 is a pump with a non-return function, so as to achieve the purpose of preventing air from entering. In this embodiment, the one-way valve 5 is arranged at the first outlet pipe 43 near the output end. In addition, the check valve 5 may be disposed at any other position on the exhaust pipe 1 or the first liquid outlet pipe 43, but the check valve 5 is preferably disposed at the output end of the first liquid outlet pipe 43, so that it is ensured that food in the exhaust pipe 1, the first liquid outlet pipe 43 and the pump body 42 is not deteriorated by contact with the outside air when not in use. The pump body 42 can perform both an air discharge function and a liquid extraction function. The type of pump is not particularly limited.

In this embodiment, the pump body 42 is an electric pump. The evacuation assembly 4 further includes a first connection tube 44, a first housing 41, a first battery 45, a first switch 47, and a first circuit board 46. The air outlet end of the air outlet pipe 1, the first connecting pipe 44 and the pump body 42 are sequentially communicated. The first connecting tube 44, the pump body 42, the first liquid outlet tube 43, the first battery 45 and the first circuit board 46 are all arranged on the first housing 41, and the first battery 45, the first switch 47 and the pump body 42 are all electrically connected with the first circuit board 46. Wherein, the first connection pipe 44, the pump body 42, the first battery 45 and the first circuit board 46 are all disposed in the first housing 41.

The first housing 41 has a first mounting groove 411 at its lower end for engaging with the plug mounting sleeve 22, and is convenient for positioning during assembly and stable in connection. The first housing 41 is provided with ventilation holes, so that external air can pass through the inner cavity of the first housing 41 and the second air inlet 33 of the sealing plug 3 in sequence through the ventilation holes, and enter the elastic expansion sleeve 21 from the first air inlet 23.

The flexible glue cover 2 further comprises a sealing plug mounting sleeve 22 connected above the elastic expansion sleeve 21. The sealing plug 3 comprises an interface 32, a flange plate 34 and a sealing plug main body 31 which are sequentially connected from top to bottom, and the air outlet end of the exhaust pipe 1 penetrates through the sealing plug main body 31 from bottom to top and is communicated with one end of the interface 32. The other end of the interface 32 communicates with an input of a first connection tube 44. The sealing plug body 31 is externally provided with a snap-fit flange 311. The plug mounting sleeve 22 is positioned over the flange plate 34. The sealing plug 3 is further provided with a second air inlet 33 passing through the flange plate 34 and the sealing plug body 31 in sequence, and the second air inlet 33 is communicated with the first air inlet 23 of the elastic expansion sleeve 21.

The vacuum pumping assembly 4 is detachably connected with the interface 32 of the sealing plug 3.

As shown in fig. 4, the food fresh-keeping device comprises a food storage container 6 and a food container emptying device, wherein an exhaust pipe 1 and an elastic expansion sleeve 21 of the food container emptying device extend into the food storage container 6 from the opening of the food storage container 6, and a sealing plug 3 is arranged at the opening of the food storage container 6.

In this embodiment, the food storage container 6 is a red wine bottle. The food container emptying device is used as follows:

after the bottle stopper of the red wine bottle is pulled out, the exhaust pipe 1 and the elastic expansion sleeve 21 of the food container emptying device extend into the red wine bottle from the opening of the red wine bottle, wherein the exhaust opening 11 of the exhaust pipe 1 is close to the bottle bottom of the red wine bottle as much as possible. The upper part of the elastic expansion sleeve 21 is sleeved outside the sealing plug body 31. Because the elastic expansion sleeve 21 is thin, the clamping flange 311 outside the sealing plug main body 31 applies pressure to the inner wall of the bottle mouth of the red wine bottle through the elastic expansion sleeve 21, so that the sealing effect can be achieved.

Then the red wine bottle is inverted, at this time, the air in the bottle and the air extraction opening 11 of the air exhaust pipe 1 are both positioned at the top (bottle bottom), the pump body 42 is started through the first switch 47 to extract the air positioned at the bottle bottom of the red wine bottle at this time, the elastic expansion sleeve 21 expands and compresses the space in the red wine bottle along with the air extraction opening, and the air extraction opening can be judged according to whether air bubbles exist or not until the air is removed from the red wine bottle. The red wine bottle can be stored in the normal position again, and the vacuumizing assembly 4 can be detached from the first connector 32 of the sealing plug 3 or not, but the vacuum state in the red wine bottle is not affected by the detaching of the vacuumizing assembly 4, so that the problem of deterioration of the red wine is basically avoided.

When the next time the user needs to drink the red wine, the user does not need to detach the sealing plug 3, only needs to start the pump body 42 again through the first switch 47, the red wine in the bottle can flow out through the exhaust pipe 1, the pump body 42 and the first liquid outlet pipe 43 in sequence, and the elastic expansion sleeve 21 further expands along with the reduction of the red wine in the bottle. In the process, the external gas still cannot contact the red wine in the red wine bottle, so that the red wine is not easy to deteriorate. When no red wine exists in the red wine bottle, the ventilation switch is turned on, and gas is injected into the bottle body through the exhaust pipe 1, so that the elastic expansion sleeve 21 can be contracted until the elastic expansion sleeve 21 can be pulled out of the red wine bottle along with the exhaust pipe 1 and the sealing plug 3, and the red wine bottle is convenient to reuse.

Example 2

As shown in fig. 8 to 14, the difference from embodiment 1 is that the first air inlet 23 of the elastic expansion sleeve 21 is connected with the air injection assembly 7.

The gas injection assembly 7 includes a gas injection pump 72, and the gas outlet end of the gas injection pump 72 communicates with the first gas inlet 23. The gas injection pump 72 is an electric pump or a manual pump. The exhaust pipe 1 is connected with a second liquid outlet pipe 73, and the exhaust pipe 1 and/or the second liquid outlet pipe 73 are/is provided with a one-way valve 5, or the gas injection pump 72 is a pump with a non-return function. When the manual pump is adopted, components such as a battery, a circuit board, a switch and the like are not required. In this embodiment, the gas injection pump 72 is an electric pump.

The gas injection assembly 7 further includes a second connection tube 74, a second housing 71, a second battery 75, a second switch 77, and a second circuit board 76. The air outlet end of the air injection pump 72 communicates with the first air inlet 23 through a second connection tube 74. The second connection pipe 74, the gas injection pump 72, the second battery 75 and the second circuit board 76 are all disposed on the second housing 71, and the second battery 75, the second switch 77 and the gas injection pump 72 are all electrically connected to the second circuit board 76.

The flexible glue cover 2 further comprises a sealing plug mounting sleeve 22 connected above the elastic expansion sleeve 21. The sealing plug 3 comprises an interface 32, a flange plate 34 and a sealing plug main body 31 which are sequentially connected from top to bottom, and the air outlet end of the exhaust pipe 1 penetrates through the sealing plug main body 31 from bottom to top and is communicated with one end of the interface 32. The other end of the port 32 communicates with a second outlet pipe 73. The sealing plug body 31 is externally provided with a snap-fit flange 311. The plug mounting sleeve 22 is positioned over the flange plate 34. The sealing plug 3 is further provided with a second air inlet 33 passing through the flange plate 34 and the sealing plug body 31 in sequence, the second air inlet 33 being connected between the second connection pipe 74 and the first air inlet 23.

The bottom of the second housing 41 is provided with a mounting groove 711 adapted to the sealing plug mounting sleeve 22.

As shown in fig. 11, the food fresh-keeping device comprises a food storage container 6 and a food container emptying device, wherein an exhaust pipe 1 and an elastic expansion sleeve 21 of the food container emptying device extend into the food storage container 6 from an opening of the food storage container 6, and a sealing plug 3 is arranged at the opening of the food storage container 6.

In this embodiment, the food storage container 6 is a red wine bottle. The food container emptying device is used as follows:

after the bottle stopper of the red wine bottle is pulled out, the exhaust pipe 1 and the elastic expansion sleeve 21 of the food container emptying device extend into the red wine bottle from the opening of the red wine bottle, wherein the air inlet 11 of the exhaust pipe 1 is close to the bottle bottom of the red wine bottle as much as possible. The upper part of the elastic expansion sleeve 21 is sleeved outside the sealing plug body 31. Because the elastic expansion sleeve 21 is thin, the clamping flange 311 outside the sealing plug main body 31 applies pressure to the inner wall of the bottle mouth of the red wine bottle through the elastic expansion sleeve 21, so that the sealing effect can be achieved.

The red wine bottle is then inverted, and the air in the bottle and the air inlet 11 of the air outlet pipe 1 are both positioned at the top (bottom), and the air injection pump 72 is started through the second switch 77 to inject the external air into the elastic expansion sleeve 21 from the second air inlet 33 to expand. Because the internal volume of the red wine bottle is compressed by the expanded elastic expansion sleeve 21, the original air mixed with the red wine in the red wine bottle can be discharged out of the bottle from the exhaust pipe 1, thereby achieving the purpose of fresh-keeping of the red wine. Then the red wine bottle can be stored in the normal position again. The gas injection assembly 7 can be selectively detached from the second port 72 and the second gas inlet 33 of the sealing plug 3, but the vacuum state in the red wine bottle is not affected by the detachment of the gas injection assembly 7, so that the problem of deterioration of the red wine is basically not worry.

When the next time the user needs to drink the red wine, the sealing plug 3 is not required to be detached, the air injection pump 72 is started through the second switch 77 again to further expand the elastic expansion sleeve 21, the red wine in the red wine bottle can be sequentially extruded through the exhaust pipe 1 and the second liquid outlet pipe 73, the original vacuum sealing state of the red wine bottle is not required to be destroyed, deterioration of the red wine in the red wine bottle caused by frequent contact with air is avoided, long-time storage of the red wine is facilitated, and meanwhile the original flavor of the red wine is kept as much as possible. In the process, the external gas still cannot contact the red wine in the red wine bottle, so that the red wine is not easy to deteriorate. When no red wine exists in the red wine bottle, the gas is pumped from the elastic expansion sleeve 21 through the second gas inlet 33, so that the elastic expansion sleeve 21 can be contracted until the elastic expansion sleeve 21 can be pulled out of the red wine bottle along with the gas exhaust pipe 1 and the sealing plug 3, and the red wine bottle is convenient to reuse.

The proposal can be used for preserving the freshness of the red wine, and can also be used for jelly food or solid food with partial small particles.

The utility model has been described in connection with the preferred embodiments, but the utility model is not limited to the embodiments disclosed above, but it is intended to cover various modifications, equivalent combinations according to the essence of the utility model.

Claims (10)

1. The food container emptying device is characterized by comprising an exhaust pipe (1) and a flexible rubber sleeve (2), wherein the flexible rubber sleeve (2) comprises an elastic expansion sleeve (21) sleeved outside the exhaust pipe (1); the elastic expansion sleeve (21) is connected with the exhaust pipe (1), the upper part of the soft rubber sleeve (2) is connected with the sealing plug (3) which is used for being in sealing fit with the food storage container (6), and the upper part of the elastic expansion sleeve (21) is provided with the first air inlet (23).

2. A food container emptying device according to claim 1, characterized in that the exhaust pipe (1) is connected with a vacuum-pumping assembly (4).

3. A food container emptying device according to claim 2, characterized in that the evacuation assembly (4) comprises a pump body (42) and a first outlet pipe (43) which are in turn connected; the air outlet end of the exhaust pipe (1) is communicated with the input end of the pump body (42); the pump body (42) is a manual pump or an electric pump; the exhaust pipe (1) and/or the first liquid outlet pipe (43) are/is connected with a one-way valve (5), or the pump body (42) is a pump with a non-return function.

4. A food container emptying device according to claim 3, characterized in that the pump body (42) is an electric pump; the vacuumizing assembly (4) further comprises a first connecting pipe (44), a first shell (41), a first battery (45), a first switch (47) and a first circuit board (46); the air outlet end of the exhaust pipe (1), the first connecting pipe (44) and the pump body (42) are sequentially communicated; the first connecting pipe (44), the pump body (42), the first liquid outlet pipe (43), the first battery (45) and the first circuit board (46) are all arranged on the first shell (41), and the first battery (45), the first switch (47) and the pump body (42) are all electrically connected with the first circuit board (46).

5. A food container emptying device according to claim 4, characterized in that the flexible glue sleeve (2) further comprises a sealing plug mounting sleeve (22) connected above the elastic expansion sleeve (21); the sealing plug (3) comprises an interface (32), a flange plate (34) and a sealing plug main body (31) which are sequentially connected from top to bottom, and the air outlet end of the exhaust pipe (1) penetrates through the sealing plug main body (31) from bottom to top and is communicated with one end of the interface (32); the other end of the interface (32) is communicated with the input end of the first connecting pipe (44); a clamping flange (311) is arranged outside the sealing plug main body (31); the sealing plug mounting sleeve (22) is sleeved outside the flange plate (34); the sealing plug (3) is also provided with a second air inlet (33) which sequentially penetrates through the flange plate (34) and the sealing plug main body (31), and the second air inlet (33) is communicated with the first air inlet (23) of the elastic expansion sleeve (21).

6. A food container emptying device according to claim 1, characterized in that the first air inlet (23) of the elastic expansion sleeve (21) is connected with an air injection assembly (7).

7. A food container emptying apparatus as claimed in claim 6, wherein the gas injection assembly (7) comprises a gas injection pump (72), the gas outlet end of the gas injection pump (72) being in communication with the first gas inlet (23); the gas injection pump (72) is an electric pump or a manual pump; the exhaust pipe (1) is connected with a second liquid outlet pipe (73), and the exhaust pipe (1) and/or the second liquid outlet pipe (73) are/is provided with a one-way valve (5), or the gas injection pump (72) is a pump with a non-return function.

8. A food container emptying device according to claim 7, characterized in that the gas injection pump (72) is an electric pump, the gas injection assembly (7) further comprising a second connection tube (74), a second housing (71), a second battery (75), a second switch (77) and a second circuit board (76); the air outlet end of the air injection pump (72) is communicated with the first air inlet (23) through a second connecting pipe (74); the second connecting pipe (74), the gas injection pump (72), the second battery (75) and the second circuit board (76) are all arranged on the second housing (71), and the second battery (75), the second switch (77) and the gas injection pump (72) are all electrically connected with the second circuit board (76).

9. A food container emptying device according to claim 8, characterized in that the flexible glue sleeve (2) further comprises a sealing plug mounting sleeve (22) connected above the elastic expansion sleeve (21); the sealing plug (3) comprises an interface (32), a flange plate (34) and a sealing plug main body (31) which are sequentially connected from top to bottom, and the air outlet end of the exhaust pipe (1) penetrates through the sealing plug main body (31) from bottom to top and is communicated with one end of the interface (32); the other end of the interface (32) is communicated with a second liquid outlet pipe (73); a clamping flange (311) is arranged outside the sealing plug main body (31); the sealing plug mounting sleeve (22) is sleeved outside the flange plate (34); the sealing plug (3) is further provided with a second air inlet (33) which sequentially penetrates through the flange plate (34) and the sealing plug main body (31), and the second air inlet (33) is connected between the second connecting pipe (74) and the first air inlet (23).

10. A food fresh-keeping device characterized by comprising a food storage container (6) and a food container emptying device according to any one of claims 1 to 9, wherein the exhaust pipe (1) and the elastic expansion sleeve (21) of the food container emptying device extend into the food storage container (6) from the opening of the food storage container (6), and the sealing plug (3) is arranged at the opening of the food storage container (6).