CN213893361U

CN213893361U - Vacuum preservation box, air exhaust device for vacuum preservation box and handheld stirrer

Info

Publication number: CN213893361U
Application number: CN202022773693.1U
Authority: CN
Inventors: 郭建刚; 李和平; 盛顶训
Original assignee: Guangdong Baishengtu Technology Co Ltd
Current assignee: Guangdong Baishengtu Technology Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-08-06
Anticipated expiration: 2030-11-26

Abstract

The utility model relates to a vacuum preservation box technical field refers in particular to a vacuum preservation box, including the vacuum preservation box, be equipped with the air exhaust mouth on the vacuum preservation box, be equipped with mobilizable piston assembly in the mounting hole on the air exhaust mouth, piston assembly includes activity stopper, sealing nozzle and piston seal, is equipped with on the activity stopper with the trompil of vacuum preservation box inside and outside intercommunication, sealing nozzle movably is spacing in the trompil, piston seal overlaps in activity stopper upper portion, through the sealed setting of piston seal between the inner wall of activity stopper and mounting hole. Adopt such structure setting, realize through the sealing nozzle that the trompil is sealed or open, and then realize sealing or opening to air passage to and realize sealing or opening the mounting hole through piston assembly, realize sealing or opening vacuum preservation box.

Description

Vacuum preservation box, air exhaust device for vacuum preservation box and handheld stirrer

Technical Field

The utility model relates to a mixer technical field refers in particular to a vacuum preservation box, an air exhaust device and hand-held type mixer that are used for vacuum preservation box.

Background

The preservation box in the existing market has no date record, or the date recording device is dispersedly arranged with the vacuumizing exhaust device, the negative pressure display device and the pressure relief device, so that a plurality of places of the product need to prevent air leakage, the sealing effect is not good, the vacuum keeping time is short, the assembly of each functional device is complex, and the product cost is improved. For example, chinese patent document No. CN201899396U discloses a hand mixer, which includes a driving motor disposed in a main machine, the driving motor is electrically connected to a control board on the main machine, a connector is disposed on an output shaft of the driving motor, a vacuum pumping component is disposed on the connector, and the vacuum pumping component and the driving motor are disposed horizontally or vertically and connected to a vacuum cup. This prior art plays the evacuation effect through driving motor drive evacuation part to the vacuum cup, however its vacuum cup does not have the date record, or date recorder and evacuation exhaust apparatus, negative pressure display device, pressure relief device dispersion set up, and the product is many places is leak protection gas, and sealed effect is not good, leads to the vacuum hold time shorter. Accordingly, the prior art is yet to be improved and developed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a vacuum preservation box, an air exhaust device and hand-held type mixer for vacuum preservation box, to the not enough of prior art, effectively overcome the weak point among the prior art.

In order to achieve the above purpose, the utility model discloses the technical scheme who uses as follows:

the utility model provides a vacuum preservation box, includes the vacuum preservation box, is equipped with the air exhaust mouth on the vacuum preservation box, is equipped with mobilizable piston assembly in the mounting hole on the air exhaust mouth, and piston assembly includes activity stopper, sealing nozzle and piston seal circle, is equipped with on the activity stopper with the trompil of vacuum preservation box inside and outside intercommunication, and sealing nozzle is mobilizable spacing in the trompil, and piston seal circle overlaps in activity stopper upper portion, through the sealed setting of piston seal circle between the inner wall of activity stopper and mounting hole. Adopt such structure setting, realize through the sealing nozzle that the trompil is sealed or open, and then realize sealing or opening to air passage to and realize sealing or opening the mounting hole through piston assembly, realize sealing or opening vacuum preservation box.

According to the scheme, the lower portion of the movable plug is sleeved with the spring, one end of the spring abuts against the first limiting step on the support, the other end of the spring abuts against the second limiting step on the movable plug, and the third limiting step matched with the mounting hole of the support for limiting is arranged on the movable plug. By adopting the structure, the movable plug can be movably limited in the mounting hole through the elastic force of the spring and the limiting action of the limiting step III.

According to the scheme, a plurality of supporting ribs which are arranged in an annular mode are arranged in the mounting hole, inclined planes are arranged at the tops of the supporting ribs, and the supporting ribs and the piston sealing ring are arranged correspondingly. Adopt such structure setting, be in under sealed negative pressure state in the vacuum preservation box, the vacuum preservation box can not be opened, if open the vacuum preservation box this moment, the user can press the gland downwards, make the piston assembly wholly sink, when the piston seal who fills up upper portion on the activity conflicts with the brace rod, the brace rod that is the annular setting can promote piston seal to the center, produce the clearance between the pore wall of the mounting hole of messenger piston seal and support, outside air just can follow the clearance rapidly and gets into in the vacuum preservation box this moment, thereby realize the interior pressure release of vacuum preservation box, this moment alright very light open the vacuum preservation box, take out the food in the vacuum preservation box.

According to the scheme, the air suction nozzle is internally provided with a rotatable date turntable, a rotatable month turntable and a pointer which can be matched with the date turntable and the month turntable.

According to the scheme, the support is arranged in the air exhaust nozzle, the mounting hole is formed in the support, the date turntable and the month turntable are sleeved with the support, and the support sealing ring is arranged between the support and the air exhaust nozzle. In practical application, the date rotary disc and the month rotary disc are in a large-small ring shape, the small ring can be placed into the inner hole of the large ring and pressed to prevent the small ring from falling off, and the small ring can be rotatably sleeved at the upper end of the support and pressed by the support to prevent the small ring from falling off. The date turntable is provided with 1-31 numbers representing dates, and the month turntable is provided with 1-12 numbers representing months. Preferably, the pointer is arranged on a support in the air suction nozzle, a certain number on the date turntable and the month turntable is respectively rotated to the position of the pointer, the current date can be recorded as several months and several days, the date is used for recording the date of starting the vacuum preservation of food in the vacuum preservation box, and the food is prevented from being deteriorated due to the fact that the food is placed for a long time. The sealing effect between the support and the air suction nozzle is achieved through the support sealing ring, and the vacuum preservation box is prevented from being communicated with the outside through the gap between the support and the air suction nozzle.

According to the scheme, the movable plug is provided with the gland, the gland is provided with the plurality of air holes, and the air holes correspond to the openings to form an air channel communicated with the inside and the outside of the vacuum preservation box.

According to the scheme, the vacuum preservation box comprises a box body and a box body cover, the box body cover is covered on the box body, the air exhaust nozzle is arranged on the box body cover, and a box body sealing ring is arranged between the box body cover and the box body. By adopting the structure, the sealing between the box body cover and the box body is realized through the box body sealing ring.

The utility model provides an air exhaust device for vacuum preservation box, includes foretell vacuum preservation box, the subassembly and the drive assembly of bleeding, the subassembly of bleeding corresponds with the drive assembly through the buckle subassembly and is connected, the drive assembly drive subassembly work of bleeding, the subassembly of bleeding includes shell, shell upper cover and aspirator nozzle, shell upper cover and shell fixed connection to the shaping has cavity one, is equipped with the aspiration pump in the cavity one, aspirator nozzle fixed connection is on the shell, the aspirator nozzle corresponds the setting with the aspirator nozzle on the vacuum preservation box. Adopt such structure setting, its during operation corresponds the butt with the suction nozzle on suction nozzle and the vacuum preservation box, and rethread drive assembly drive air exhaust subassembly work makes the aspiration pump carry out evacuation processing in with the vacuum preservation box through the suction nozzle, and then can play the effect that the vacuum is fresh-keeping to the food in the vacuum preservation box.

According to the above scheme, the aspiration pump includes aspiration pump upper cover, transmission shaft and aspiration pump lower cover, aspiration pump upper cover and aspiration pump lower cover fixed connection to the shaping has cavity two, is covered under the aspiration pump to be equipped with a plurality of flexible glue gasbags, and the transmission shaft lower extreme is located in cavity two, and is equipped with on the tip to correspond with the flexible glue gasbag and sets up the extrusion structure, and the output shaft that the aspiration pump upper cover was worn out to the transmission shaft upper end and passed through connector and drive assembly corresponds to be connected, is equipped with shift knob on the drive assembly. Adopt such structure setting, start drive assembly through shift knob, drive assembly's output shaft drive transmission shaft rotates, makes the extrusion structure of transmission shaft lower extreme cover a plurality of flexible glue gasbags one by one the aspiration pump lower cover the cycle compression tensile, when every flexible glue gasbag compression, can be with the air escape in the flexible glue gasbag, takes away the air from the suction nozzle during tensile again, makes the interior gas pressure of suction nozzle reduce, and then realizes the effect to the vacuum preservation box evacuation.

According to the scheme, the buckle assembly comprises a first fixing protrusion arranged on the driving assembly and a second fixing protrusion arranged on the upper cover of the shell, and the first fixing protrusion is connected with the second fixing protrusion in a matched buckle mode. By adopting the structure, the driving component and the air exhaust component can be detachably mounted, and the mounting and the dismounting are very convenient.

The utility model provides a hand-held type mixer with vacuum preservation box, including foretell vacuum preservation box, bleed subassembly and drive assembly, still include the stirring rod subassembly of being connected with drive assembly, the stirring rod subassembly is by the connecting portion that are equipped with fixed protruding three, the sleeve pipe, the stirring cover, the rotation axis, a bearing, the sealing member, stirring blade constitutes, the stirring rod subassembly is through fixed protruding three, fixed protruding one is connected with drive assembly, connecting portion and stirring cover set up respectively at sheathed tube upper and lower both ends, a bearing, the sealing member is installed at the sleeve pipe, the rotation axis stretches into the sleeve pipe from connecting portion, through the bearing, stretch into in the stirring cover behind the sealing member, stirring blade sets up in the stirring cover, and with rotation axis lower extreme fixed connection, the upper end of rotation axis corresponds with drive assembly's output shaft and is connected.

The utility model discloses beneficial effect:

1) the sealing of the open hole is realized through the sealing nozzle, so that the air channel is sealed, the mounting hole is sealed through the piston assembly, the sealing effect of the vacuum preservation box is realized, and the effect of vacuum preservation on food in the vacuum preservation box can be further realized;

2) the vacuum-pumping treatment of the vacuum fresh-keeping box is realized through the air exhaust device, and then the effect of vacuum fresh keeping of food in the vacuum fresh-keeping box can be achieved.

Drawings

FIG. 1 is a sectional view of the vacuum preservation box of the present invention;

FIG. 2 is an enlarged view of the location A in FIG. 1;

FIG. 3 is a schematic view of the structure of the cover of the utility model;

FIG. 4 is an exploded view of the lid structure of the present invention;

FIG. 5 is an exploded view of the structure of the pumping assembly of the present invention;

FIG. 6 is a schematic view of the assembly of the air pumping assembly and the vacuum preservation box of the present invention;

FIG. 7 is a sectional view of the air pumping assembly and the vacuum preservation box;

FIG. 8 is an exploded view of the air extraction assembly and the vacuum preservation box of the present invention;

fig. 9 is an exploded view of the hand-held blender structure of the present invention.

In the figure: 1. a drive assembly; 2. an air extraction assembly; 3. a box body; 4. a box body cover; 5. a suction nozzle; 6. a gland; 7. a date dial; 8. a month carousel; 9. a movable plug; 10. sealing the nozzle; 11. a piston seal ring; 12. a support; 13. a spring; 14. a support sealing ring; 15. a box body sealing ring; 16. a switch button; 17. a connector; 18. a drive shaft; 19. an air pump; 20. a pointer; 21. a suction nozzle; 22. fixing the first projection; 23. a second fixing protrusion; 24. supporting ribs; 25. a housing; 26. an upper cover of the shell; 27. an air pump upper cover; 28. a lower cover of the air pump; 29. a soft rubber air bag; 30. opening a hole; 31. air holes; 32. mounting holes; 33. a first limiting step; 34. a second limiting step; 35. a third limiting step; 40. fixing the third projection; 41. a connecting portion; 42. a sleeve; 43 a stirring cover; 44. a rotating shaft; 45. a bearing; 46. a seal member; 47. a stirring blade;

Detailed Description

The technical solution of the present invention will be described below with reference to the accompanying drawings and examples.

As shown in fig. 1 to 4, a vacuum preservation box, including the vacuum preservation box, be equipped with exhaust nozzle 21 on the vacuum preservation box, be equipped with mobilizable piston assembly in the mounting hole 32 on the exhaust nozzle 21, piston assembly includes movable stopper 9, sealing nozzle 10 and piston seal circle 11, be equipped with on the movable stopper 9 with the trompil 30 of the inside and outside intercommunication of vacuum preservation box, sealing nozzle 10 movably is spacing in trompil 30, piston seal circle 11 overlaps on movable stopper 9 upper portion, through the sealed setting of piston seal circle 11 between the inner wall of movable stopper 9 and mounting hole 32. By adopting the structure, the opening 30 is sealed or opened through the sealing nozzle 10, so that the air channel is sealed or opened, the mounting hole 32 is sealed or opened through the piston assembly, and the vacuum fresh-keeping box is sealed or opened.

In this embodiment, the lower portion of the movable plug 9 is sleeved with a spring 13, one end of the spring 13 abuts against a first limit step 33 on the bracket 12, the other end of the spring 13 abuts against a second limit step 34 on the movable plug 9, and the movable plug 9 is provided with a third limit step 35 which is matched with the mounting hole 32 of the bracket 12 for limiting. With the structure, the movable plug 9 can be movably limited in the mounting hole 32 through the elastic force of the spring 13 and the limiting action of the third limiting step 35.

In this embodiment, a plurality of supporting ribs 24 are annularly disposed in the mounting hole 32, an inclined surface is disposed at the top of the supporting rib 24, and the supporting rib 24 is disposed corresponding to the piston seal ring 11. Adopt such structure setting, be in under the sealed negative pressure state in the vacuum preservation box, the vacuum preservation box can not be opened, if open the vacuum preservation box this moment, the user can push down gland 6, make piston assembly wholly sink, when the piston seal ring 11 on movable stopper 9 upper portion contradicts with brace rod 24, the brace rod 24 that is the annular setting can promote piston seal ring 11 to the center, produce the clearance between the pore wall of the mounting hole 32 that makes piston seal ring 11 and support 12, outside air just can follow the clearance rapidly and get into in the vacuum preservation box this moment, thereby realize the interior pressure release of vacuum preservation box, this moment alright very light open the vacuum preservation box, take out the food in the vacuum preservation box.

In this embodiment, the air suction nozzle 21 is provided with a rotatable date dial 7, a rotatable month dial 8 and a pointer 20 which can be matched with the date dial 7 and the month dial 8.

In this embodiment, the inside of the air suction nozzle 21 is provided with a support 12, the mounting hole 32 is provided in the support 12, the date dial 7 and the month dial 8 are sleeved with the support 12, and a support sealing ring 14 is provided between the support 12 and the air suction nozzle 21. In practical application, the date rotary disc 7 and the month rotary disc 8 are in a large-small ring shape, the small ring can be placed into an inner hole of the large ring and pressed to prevent the small ring from falling off, and the small ring can be rotatably sleeved at the upper end of the support 12 through the inner hole of the small ring and pressed by the support 12 to prevent the small ring from falling off. The date rotary disk 7 is provided with 1-31 numbers representing dates, and the month rotary disk 8 is provided with 1-12 numbers representing months. Preferably, the pointer 20 is arranged on the support 12 in the air suction nozzle 21, and is used for respectively rotating a certain number on the date turntable 7 and the month turntable 8 to the position of the pointer, recording the current date of several months and several days, recording the date of starting the vacuum preservation of food in the vacuum preservation box, and avoiding the food from going bad after being placed for a long time. The sealing effect between the bracket 12 and the air suction nozzle 21 is achieved through the bracket sealing ring 14, and the vacuum preservation box is prevented from being communicated with the outside through a gap between the bracket 12 and the air suction nozzle 21.

In this embodiment, the movable plug 9 is provided with a pressing cover 6, the pressing cover 6 is provided with a plurality of air holes 31, and the air holes 31 and the openings 30 correspond to form an air passage for communicating the inside and the outside of the vacuum preservation box.

In this embodiment, the vacuum preservation box comprises a box body 3 and a box cover 4, the box cover 4 covers the box body 3, the air exhaust nozzle 21 is arranged on the box cover 4, and a box body sealing ring 15 is arranged between the box cover 4 and the box body 3. With the structure, the box body sealing ring 15 is used for sealing the box body cover 4 and the box body 3.

As shown in fig. 5 to 8, an air extractor for vacuum preservation box, including foretell vacuum preservation box, air extraction component 2 and drive assembly 1, air extraction component 2 corresponds with drive assembly 1 through the buckle subassembly and is connected, drive assembly 1 drives air extraction component 2 and works, air extraction component 2 includes shell 25, shell upper cover 26 and suction nozzle 5, shell upper cover 26 and shell 25 fixed connection, and the shaping has cavity one, be equipped with aspiration pump 19 in the cavity one, suction nozzle 5 fixed connection is on shell 25, suction nozzle 5 corresponds the setting with the air extraction mouth 21 on the vacuum preservation box. Adopt such structure setting, its during operation corresponds the butt with suction nozzle 5 and the exhaust mouth 21 on the vacuum preservation box, and rethread drive assembly 1 drive air exhaust assembly 2 work makes aspiration pump 19 carry out evacuation processing in with the vacuum preservation box through suction nozzle 5, and then can play the effect that the vacuum was kept fresh to food in the vacuum preservation box.

In this embodiment, the air pump 19 includes the air pump upper cover 27, transmission shaft 18 and air pump lower cover 28, air pump upper cover 27 and air pump lower cover 28 fixed connection, and the shaping has a cavity two, be equipped with a plurality of flexible glue gasbags 29 on the air pump lower cover 28, the transmission shaft 18 lower extreme is located in the cavity two, and the tip is equipped with the extrusion structure that corresponds the setting with flexible glue gasbag 29, the air pump upper cover 27 is worn out and the output shaft through connector 17 and drive assembly 1 corresponds to be connected to the transmission shaft 18 upper end, be equipped with shift knob 16 on the drive assembly 1. Adopt such structure setting, start drive assembly 1 through shift knob 16, drive assembly 1's output shaft drive transmission shaft 18 rotates, makes the extrusion structure of transmission shaft 18 lower extreme circulate compression one by one to a plurality of flexible glue gasbags 29 on air-extracting pump lower cover 28 tensile, when every flexible glue gasbag 29 compresses, can be with the air discharge in the flexible glue gasbag 29, takes away the air from aspirator 5 again during tensile, makes aspirator 5 internal gas pressure reduce, and then realizes the effect to the vacuum preservation box evacuation.

In this embodiment, the fastening assembly includes a first fixing protrusion 22 disposed on the driving assembly 1 and a second fixing protrusion 23 disposed on the housing upper cover 26, and the first fixing protrusion 22 and the second fixing protrusion 23 are in a fit and fastening connection. By adopting the structure, the driving component 1 and the air exhaust component 2 can be detachably mounted, and the mounting and the dismounting are very convenient.

It should be noted that, when the air in the vacuum preservation box is pumped out to form a negative pressure, the gland 6 sinks to a certain depth from the surface of the vacuum preservation box, so that a user can clearly see the air, and the negative pressure state in the vacuum preservation box is displayed. Preferably, the inner wall of the mounting hole 32 can be provided with a scale line or a special color, so that a user can further conveniently recognize that the vacuum preservation box is in a negative pressure state.

The working principle of the air extraction device is as follows: drive assembly 1 drive air extraction assembly 2 work, the sealing nozzle 10 in the trompil 30 of activity stopper 9 receives upward movement under the suction effect of aspiration pump 19, air in the vacuum preservation box is outwards taken out from trompil 30, and enter into suction nozzle 5 through gas pocket 31, the internal gas pressure of vacuum preservation box reduces, after a period of bleeding, the air in the vacuum preservation box is discharged in a large number, be close to the vacuum state, the oxygen content in the vacuum preservation box is very thin this moment, can make the food of placing in the vacuum preservation box be difficult to the oxidation rotten, the bacterium is also dead because of the oxygen deficiency, can prolong food storage time by a wide margin, thereby realize the vacuum fresh-keeping function. Along with the lapse of time, atmospheric pressure in the vacuum preservation box can resume gradually, and the activity stopper 9 can drive gland 6 and rise gradually under the bounce of spring 13 promotes this moment, and when gland 6 sinks the degree of depth less, it is close atmospheric pressure more to show, reminds the consumer to need bleed again. In practical application, when air in the vacuum preservation box is pumped out to form negative pressure, the gland 6 sinks to a certain depth from the surface of the vacuum preservation box, and the movable plug 9 is in a state of compressing the spring 13. Because the vacuum preservation box is in a negative pressure state, the vacuum preservation box cannot be opened, at the moment, if a user presses the pressing cover 6 downwards, the piston assembly can sink integrally, the supporting ribs 24 which are annularly arranged in the mounting hole 32 of the support 12 can push the piston sealing ring 11 towards the center under the action of the inclined plane of the supporting ribs, a gap is generated between the piston sealing ring 11 and the hole wall of the mounting hole 32 of the support 12, at the moment, external air can rapidly enter the vacuum preservation box from the gap, and therefore pressure relief in the vacuum preservation box is achieved. Meanwhile, the sealing nozzle 10 can return to a natural state due to the loss of negative pressure, and the movable plug 9 drives the gland 6 to return to be flush with the surface of the vacuum preservation box under the pushing of the spring 13. The air pressure inside and outside the vacuum preservation box is consistent, so that the vacuum preservation box can be opened easily, and the food in the vacuum preservation box can be taken out.

As shown in fig. 9, a hand-held blender with vacuum preservation box comprises the vacuum preservation box, an air extraction component 2 and a driving component 1, and further comprises a blending rod component connected with the driving component 1, the blending rod component is composed of a connecting part 41 provided with a fixed convex three 40, a sleeve 42, a blending cover 43, a rotating shaft 44, a bearing 45, a sealing element 46 and a blending blade 47, the blending rod component is connected with the driving component 1 through the fixed convex three 40 and the fixed convex one 22, the connecting part 41 and the blending cover 43 are respectively arranged at the upper end and the lower end of the sleeve 42, the bearing 45 and the sealing element 46 are arranged in the sleeve 42, the rotating shaft 44 extends into the sleeve 42 from the connecting part 41, extends into the blending cover 43 through the bearing 45 and the sealing element 46, the blending blade 47 is arranged in the blending cover 43, and is fixedly connected with the lower end of the rotating shaft 44, and the upper end of the rotating shaft 44 is correspondingly connected with the output shaft of the driving assembly 1.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, and these forms are within the scope of the present invention.

Claims

1. The utility model provides a vacuum preservation box, includes vacuum preservation box, its characterized in that:

the vacuum preservation box is provided with an air exhaust nozzle, a movable piston assembly is arranged in a mounting hole on the air exhaust nozzle, the piston assembly comprises a movable plug, a sealing nozzle and a piston sealing ring,

the movable stopper is provided with a hole communicated with the inside and the outside of the vacuum fresh-keeping box, the sealing nozzle is movably limited in the hole, the piston sealing ring is sleeved on the upper part of the movable stopper, and the movable stopper and the inner wall of the mounting hole are hermetically arranged through the piston sealing ring.

2. The vacuum crisper of claim 1, wherein: the movable stopper lower part cover is equipped with the spring, the one end of spring is contradicted in spacing step one on the support, the other end of spring is contradicted in spacing step two on the movable stopper, be equipped with on the movable stopper with the mounting hole cooperation spacing step three of support.

3. The vacuum crisper of claim 1, wherein: a plurality of supporting ribs which are arranged in an annular mode are arranged in the mounting hole, inclined planes are arranged at the tops of the supporting ribs, and the supporting ribs and the piston sealing ring are arranged correspondingly.

4. The vacuum crisper of claim 1, wherein: the air suction nozzle is internally provided with a rotatable date turntable, a rotatable month turntable and a pointer which can be matched with the date turntable and the month turntable.

5. The vacuum crisper of claim 4, wherein: the air exhaust device is characterized in that a support is arranged in the air exhaust nozzle, the mounting hole is formed in the support, the date rotary table and the month rotary table are sleeved with the support, and a support sealing ring is arranged between the support and the air exhaust nozzle.

6. The vacuum crisper of claim 1, wherein: the movable plug is provided with a gland, the gland is provided with a plurality of air holes, and the air holes correspond to the openings to form an air channel communicated with the inside and the outside of the vacuum preservation box.

7. The vacuum crisper of claim 1, wherein: the vacuum preservation box comprises a box body and a box body cover, the box body cover is covered on the box body, the air exhaust nozzle is arranged on the box body cover, and a box body sealing ring is arranged between the box body cover and the box body.

8. An air extractor for a vacuum crisper comprising the vacuum crisper of any of claims 1 to 7, an air extractor assembly and a drive assembly, wherein: the air pumping assembly is correspondingly connected with the driving assembly through the buckle assembly, the driving assembly drives the air pumping assembly to work, the air pumping assembly comprises a shell, an upper shell cover and a suction nozzle, the upper shell cover is fixedly connected with the shell, a first cavity is formed in the upper shell, an air pumping pump is arranged in the first cavity, the suction nozzle is fixedly connected onto the shell, and the suction nozzle is correspondingly arranged with the air pumping nozzle on the vacuum preservation box.

9. An air extractor for a crisper as claimed in claim 8, wherein: the air pump comprises an upper cover of the air pump, a transmission shaft and a lower cover of the air pump, the upper cover of the air pump is fixedly connected with the lower cover of the air pump, a cavity II is formed in the air pump, a plurality of flexible glue air bags are arranged on the lower cover of the air pump, the lower end of the transmission shaft is arranged in the cavity II, an extrusion structure is arranged on the end of the transmission shaft and corresponds to the flexible glue air bags, the upper end of the transmission shaft penetrates out of the upper cover of the air pump and is connected with an output shaft of the driving assembly through a connector, and a switch button is arranged on the driving assembly.

10. An air extractor for a crisper as claimed in claim 8, wherein: the buckle assembly comprises a first fixing protrusion arranged on the driving assembly and a second fixing protrusion arranged on the upper cover of the shell, and the first fixing protrusion is connected with the second fixing protrusion in a matched buckle mode.

11. The utility model provides a hand-held type mixer with vacuum preservation box which characterized in that: the vacuum fresh-keeping box comprises the vacuum fresh-keeping box according to any one of claims 1 to 7 and the air exhaust assembly and the driving assembly according to claim 8, and further comprises a stirring rod assembly connected with the driving assembly, wherein the stirring rod assembly is composed of a connecting part provided with three fixing protrusions, a sleeve, a stirring cover, a rotating shaft, a bearing, a sealing part and a stirring blade, the stirring rod assembly is connected with the driving assembly through the three fixing protrusions and the first fixing protrusions, the connecting part and the stirring cover are respectively arranged at the upper end and the lower end of the sleeve, the bearing and the sealing part are arranged in the sleeve, the rotating shaft extends into the sleeve from the connecting part and extends into the stirring cover after passing through the bearing and the sealing part, the stirring blade is arranged in the stirring cover and is fixedly connected with the lower end of the rotating shaft, and the upper end of the rotating shaft is correspondingly connected with an output shaft of the driving assembly.