CN215687170U

CN215687170U - Food preparation machine with stable structure

Info

Publication number: CN215687170U
Application number: CN202121366597.3U
Authority: CN
Inventors: 朱泽春; 赵维松
Original assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Current assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-02-01
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses a food processing machine with a stable structure, which relates to the field of food processing machines and comprises a host machine, a crushing assembly and a liquid drainage assembly, wherein the crushing assembly comprises a crushing cup, a crushing cutter and a crushing motor, the crushing cup comprises a cup body provided with a liquid outlet and a cover assembly, the liquid drainage assembly comprises a liquid drainage valve and a liquid drainage pipe, the liquid drainage valve is connected with the cup body and arranged at the liquid outlet, the liquid drainage valve comprises a valve seat, a valve core, a sealing sleeve and a driving piece, the valve seat is provided with a valve port, the valve core is provided with a core hole and can be rotatably arranged in the valve seat, the driving piece drives the valve core to rotate so that the core hole is communicated with or disconnected from the valve port, the sealing sleeve is arranged between the valve seat and the valve core, and an end face sealing structure and a circumferential sealing structure arranged around the liquid outlet are arranged between the liquid drainage valve and the cup body. The sealing fit stability between the drain valve and the cup body is greatly improved through the two sealing structures, the sealing fit effect between the drain valve and the cup body is favorably ensured, and the situation that liquid leakage occurs due to sealing failure between the cup body and the drain valve is effectively avoided.

Description

Food preparation machine with stable structure

Technical Field

The utility model relates to the field of food processing machines, in particular to a food processing machine with a stable structure.

Background

The existing food processor generally comprises a main machine and a crushing assembly, wherein the crushing assembly comprises a crushing cup, a crushing cutter and a motor, and when the machine body works, the motor drives the crushing cutter to rotate at a high speed to cut and crush food materials in the crushing cup, so that the purpose of processing food is realized. In order to realize the purpose of automatic liquid drainage, a liquid drainage valve is additionally arranged in a main machine of the food processor, a liquid outlet is arranged at the bottom end of the crushing cup, and the liquid drainage valve is connected to the crushing cup and is positioned at the liquid outlet. When liquid needs to be drained, the drain valve rotates to enable the hole of the valve core to be communicated with the liquid outlet, and liquid in the grinding cup can be drained away through the drain valve. In the structure of the existing food processor, an end face sealing matching structure is generally adopted between the drain valve and the crushing cup, and in order to guarantee the sealing matching effect, the requirements on the end face flatness and the roughness of the drain valve and the crushing cup are higher, so that the manufacturing cost is higher. In addition, because the motor can drive the vibration of smashing the cup at the organism during operation, smash the cup and can drive the flowing back valve resonance, can be not hard up because of long-time resonance production between smashing cup and the flowing back valve, the end face seal cooperation effect between the two can reduce, is unfavorable for guaranteeing end face seal complex stability, takes place the liquid seepage easily.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the prior art, the utility model provides the food processor with stable structure, which effectively improves the stability of sealing fit between the drain valve and the grinding cup.

In order to achieve the technical purpose, the food processor with stable structure provided by the utility model comprises a host machine, a crushing assembly and a liquid drainage assembly, wherein the crushing assembly comprises a crushing cup, a crushing knife arranged in the crushing cup and a crushing motor used for driving the crushing knife, the crushing cup comprises a cup body provided with a liquid outlet and a cover part used for covering the cup body, the liquid drainage assembly comprises a liquid drainage valve and a liquid drainage pipe connected with the liquid drainage valve, the liquid drainage valve is connected with the cup body and arranged at the liquid outlet, the liquid discharge valve comprises a valve seat, a valve core, a sealing sleeve and a driving piece, the valve seat is hollow and is provided with a valve port communicated with the liquid outlet, the valve core is provided with a core hole and can be rotatably arranged in the valve seat, the driving piece drives the valve core to rotate so that the core hole is communicated with or disconnected from the valve port, the sealing sleeve is arranged between the valve seat and the valve core, and an end face sealing structure and a circumferential sealing structure arranged around the liquid outlet are arranged between the liquid discharge valve and the cup body.

Preferably, the circumferential sealing structure comprises a boss which is arranged on the cup body and protrudes outwards around the liquid outlet, the boss is inserted into the valve port, and the outer wall of the boss is in sealing fit with the inner wall of the valve port.

Preferably, the circumferential sealing structure comprises a circumferential sealing part arranged on the sealing sleeve, the circumferential sealing part extends into the valve port and is positioned at the periphery of the boss, and the outer wall of the boss is in sealing fit with the inner wall of the valve port through the circumferential sealing part.

Preferably, the end face sealing structure comprises an end face sealing part arranged on the sealing sleeve, and the end face sealing part is positioned between the surface of the valve seat and the surface of the cup body.

Preferably, the circumferential sealing structure comprises a boss which is arranged on the valve seat and protrudes outwards around the valve port, the boss is inserted into the liquid outlet, and the outer wall of the boss is in sealing fit with the inner wall of the liquid outlet.

Preferably, the circumferential sealing structure comprises a circumferential sealing part arranged on the sealing sleeve, the circumferential sealing part is coated outside the boss and positioned in the liquid outlet, and the outer wall of the boss is in sealing fit with the inner wall of the liquid outlet through the circumferential sealing part; and/or the end face sealing structure comprises an end face sealing part arranged on the sealing sleeve and a step surface arranged on the inner wall of the liquid outlet, and the end face sealing part is positioned between the end face of the boss and the step surface to enable the end face of the boss to be in sealing fit with the step surface.

Preferably, the height of the outward protrusion of the boss is h, and h is more than or equal to 3mm and less than or equal to 10 mm; and/or the boss is t, wherein t is more than or equal to 2mm and less than or equal to 5 mm.

Preferably, the liquid outlet is provided with a step surface matched with the liquid discharge valve, the end face sealing structure is arranged between the liquid discharge valve and the step surface, and the circumferential sealing structure is arranged on the periphery of the step surface.

Preferably, the valve seat is provided with a first boss protruding outwards around the valve port, the cup body is provided with a second boss protruding outwards around the liquid outlet, the inner wall of the second boss is provided with a step surface, the first boss is inserted into the second boss, and the sealing sleeve is provided with an end face sealing part between the step surface and the end face of the first boss and a circumferential sealing part between the second boss and the first boss.

Preferably, one of the sealing sleeve and the valve seat is provided with a fool-proof rib, the other is provided with a fool-proof groove matched with the fool-proof rib, and the fool-proof rib is arranged in the fool-proof groove.

After the technical scheme is adopted, the utility model has the following advantages:

1. according to the food processing machine provided by the utility model, the end face sealing structure and the circumferential sealing structure are arranged between the drain valve and the cup body at the same time, when the end face sealing structure fails, the circumferential sealing structure plays a role in sealing and matching, the sealing and matching stability between the drain valve and the cup body is greatly improved through two sealing structures, the sealing and matching effect between the drain valve and the cup body is favorably ensured, and the situation that liquid leaks between the cup body and the drain valve due to sealing failure is effectively avoided. In addition, because two sealing matching structures are arranged between the drain valve and the cup body, the requirements on the flatness and the roughness of the end face in the end face sealing structure can be properly reduced, and the manufacturing cost is favorably reduced.

2. In the first structure, the boss is arranged on the cup body and inserted into the valve port, the liquid discharge valve is effectively positioned by the cooperation of the boss and the valve port, the installation difficulty can be reduced when the liquid discharge valve is installed, and the stability of end face sealing fit and circumferential sealing fit between the liquid discharge valve and the cup body is also improved.

3. The circumferential sealing part of the sealing sleeve extends into the valve port and is positioned on the periphery of the boss, and the outer wall of the boss is in sealing fit with the inner wall of the valve port through the circumferential sealing part of the sealing sleeve. The end face sealing part of the sealing sleeve is positioned between the surface of the valve seat and the surface of the cup body to realize end face sealing fit between the liquid discharge valve and the cup body, or the end face of the boss is abutted against the step surface of the inner wall of the sealing sleeve to realize end face sealing fit between the liquid discharge valve and the cup body. The specific structure for realizing circumferential sealing fit and end face sealing fit between the liquid discharge valve and the cup body is reasonably arranged, and the sealing fit requirement is met. In addition, the circumferential sealing part and the end face sealing part of the sealing sleeve are elastic, so that elastic contact is realized between the drain valve and the cup body through the circumferential sealing part and the end face sealing part, the transmission of vibration between the drain valve and the cup body is favorably reduced, and the vibration amplitude of the drain valve is favorably reduced.

4. In the second structure, set up the boss on the disk seat, the boss is inserted and is located in the liquid outlet, and the cooperation through boss and liquid outlet makes the flowing back valve receive effectual positioning action, can reduce the installation degree of difficulty when installing the flowing back valve, also is favorable to improving between disk seat and the cup end face seal cooperation and the sealed complex stability of circumference.

5. The outer wall of the boss and the inner wall of the liquid outlet are in sealing fit through the circumferential sealing part of the sealing sleeve, the end face sealing part of the sealing sleeve is arranged between the end face of the boss and the step face on the inner wall of the liquid outlet to achieve end face sealing fit between the valve seat and the cup body, a sealing fit structure between the valve seat and the cup body is reasonably arranged, and sealing fit requirements are met.

6. The height and the thickness of the boss are reasonably arranged, so that the boss meets the positioning matching requirement. If h is less than 3mm, the height of the boss is small, the height of the positioning fit between the valve seat and the cup body is small, and the requirement of the positioning fit cannot be met. If t is less than 2mm, the thickness of the boss is small, and the structural strength of the boss cannot meet the requirement of positioning and matching. If h is more than 10mm or t is more than 5mm, the size of the boss is larger, the size of the valve seat is increased, the size of the liquid discharge valve is obviously increased, and the reasonable control of the overall size of the liquid discharge valve is not facilitated.

7. The lateral wall of cup sets up first platform portion, and the lateral wall of disk seat sets up second platform portion, is favorable to reducing the equipment degree of difficulty of flowing back valve and cup through the cooperation of first platform portion with second platform portion. The end face sealing structure and the circumferential sealing structure are arranged between the first platform part and the second platform part, so that the stability of the end face sealing structure and the stability of the circumferential sealing structure are improved, and the sealing matching effect between the valve seat and the cup body is improved.

8. Set up between seal cover and the disk seat and prevent slow-witted muscle and prevent slow-witted groove complex structure, can play the purpose that prevents the seal cover misloading through preventing slow-witted muscle and preventing the cooperation in slow-witted groove, be favorable to improving the packaging efficiency of flowing back valve.

Drawings

FIG. 1 is a schematic view of a food processor according to an embodiment;

FIG. 2 is a partial block diagram of a food processor according to an embodiment;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a partial block diagram of a grinding assembly of a food processor according to one embodiment;

FIG. 5 is an exploded view of a drain assembly of a food processor according to an embodiment;

FIG. 6 is a partial block diagram of a food processor according to a second embodiment;

FIG. 7 is an enlarged view at B of FIG. 6;

FIG. 8 is a schematic view of a cup body of a food processor according to a second embodiment of the present invention, partially separated from a drain valve;

FIG. 9 is a schematic view showing a cup body of a food processor according to the third embodiment of the present invention, partially separated from a drain valve.

In the figure, 100-host computer, 200-crushing component, 210-crushing cup, 211-cup body, 211 a-first platform part, 212-cover part, 213-liquid outlet, 214-convex column, 220-crushing knife, 230-motor, 300-liquid discharge component, 310-liquid discharge valve, 311-valve seat, 3111-seat body, 3112-bottom cover, 3113-second platform part, 3114-mounting hole, 312-valve core, 313-sealing sleeve, 313 a-circumferential sealing part, 313 b-end surface sealing part, 313 c-connecting part, 314-driving part, 315-valve port, 316-core hole, 320-liquid discharge pipe, 331-foolproof rib, 332-foolproof groove, 410-boss, 411-first boss, 412-second boss and 420-step surface.

Detailed Description

The utility model is further described with reference to the following figures and specific examples. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used merely to indicate an orientation or positional relationship relative to one another as illustrated in the drawings, merely to facilitate describing and simplifying the utility model, and are not intended to indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore are not to be considered limiting of the utility model.

Example one

As shown in fig. 1 to 5, a food processor with a stable structure according to an embodiment of the present invention includes a main body 100, a crushing assembly 200 and a drainage assembly 300, wherein the crushing assembly 200 includes a crushing cup 210, a crushing blade 220 disposed in the crushing cup 210, and a crushing motor 230 for driving the crushing blade 220, and the crushing cup 210 includes a cup body 211 having a liquid outlet 213 and a cover assembly 212 for covering the cup body 211. The drain assembly 300 includes a drain valve 310 and a drain pipe 320 connected to the drain valve 310, wherein the drain valve 310 is connected to the cup 211 and disposed at the outlet 213. The drain valve 310 comprises a valve seat 311, a valve core 312, a sealing sleeve 313 and a driving element 314, wherein the valve seat 311 is hollow and is provided with a valve port 315 communicated with the liquid outlet 213, the valve core 312 is provided with a core hole 316 and is rotatably arranged in the valve seat 311, the driving element 314 drives the valve core 312 to rotate so as to enable the core hole 316 to be communicated with or disconnected from the valve port 315, the sealing sleeve 313 is arranged between the valve seat 311 and the valve core 312, and an end face sealing structure and a circumferential sealing structure arranged around the liquid outlet 213 are arranged between the drain valve 310 and the cup body 211.

The end face sealing structure and the circumferential sealing structure are arranged between the liquid discharge valve and the cup body simultaneously, when the end face sealing structure fails, the circumferential sealing structure plays a role in sealing and matching, the sealing and matching stability between the liquid discharge valve and the cup body is greatly improved through two sealing structures, the sealing and matching effect between the liquid discharge valve and the cup body is favorably ensured, and the situation that liquid leakage occurs due to sealing failure between the cup body and the liquid discharge valve is effectively avoided. In addition, because two sealing matching structures are arranged between the drain valve and the cup body, the requirements on the flatness and the roughness of the end face in the end face sealing structure can be properly reduced, and the manufacturing cost is favorably reduced.

In this embodiment, the grinding cup 210 has a structure in which the upper cup body and the lower cup body are engaged, so the cover member 212 also has a cup body type structure, the heating pipe is disposed at the bottom of the cup body 211, and the grinding blade 220 is rotatably disposed on the cup body 211. Valve seat 311 of drain valve 310 includes a seat body 3111 and a bottom cover 3112, bottom cover 3112 is fixed in the bottom of seat body 3111 through the screw, valve core 312 is arranged in the cavity that seat body 3111 and bottom cover 3112 enclose and close, the top of drain pipe 320 is connected in the bottom of seat body 3111 through bottom cover 3112, the terminal of drain pipe 320 stretches out of host computer 100. The driving member 314 is preferably a driving motor, and the valve core 312 is fixedly sleeved on an output shaft of the driving member 314.

In order to improve the stability of the end face sealing structure and the circumferential sealing structure, a first platform portion 211a is provided on the circumferential side wall of the cup body 211, a plane is provided at the first platform portion 211a, and the liquid outlet 213 is provided at the first platform portion 211 a. The valve seat 311 is provided with a second land portion 3113 on a circumferential side wall thereof, which is engaged with the first land portion 211a, a flat surface is provided at the second land portion 3113, the valve port 315 is provided at the second land portion 3113, and an end face seal structure and a circumferential seal structure are provided between the first land portion 211a and the second land portion 3113.

The circumferential sealing structure comprises a boss 410 which is arranged on the cup body 211 and protrudes outwards around the liquid outlet 213, the boss 410 is inserted into the valve port 315, and the outer wall of the boss 410 is in sealing fit with the inner wall of the valve port 315. The liquid discharge valve 310 is effectively positioned by the matching of the boss 410 and the valve port 315, so that the mounting difficulty can be reduced when the liquid discharge valve 310 is mounted, and the stability of end face sealing matching and circumferential sealing matching between the liquid discharge valve and the cup body 211 can be improved. In this embodiment, the circumferential sealing structure further includes a circumferential sealing portion 313a disposed on the sealing sleeve 313, the circumferential sealing portion 313a extends into the valve port 315 and is located at the outer periphery of the boss 410, and the outer wall of the boss 410 and the inner wall of the valve port 315 are in sealing fit through the circumferential sealing portion 313 a. The end face seal structure includes an end face seal portion 313b provided on the seal sleeve 313, and the end face seal portion 313b is located between the plane of the first platform portion 211a and the plane of the second platform portion 3113. The circumferential sealing portion 313a and the end face sealing portion 313b are integrally formed with the sealing sleeve 313, and in order to improve the sealing effect, the circumferential sealing portion 313a is provided with a plurality of ribs axially spaced apart on the surface engaging with the boss 410, and the end face sealing portion 313b is provided with a plurality of ribs inwardly and outwardly spaced apart on the surface engaging with the first platform portion 211 a. The shape of the boss 410 is similar to the shape of the valve port 315, and in this embodiment is oblong.

In order to ensure that the boss 410 meets the requirement of positioning and matching, the height h of the outward protrusion of the boss 410 and the thickness t of the boss 410 need to be reasonably set, wherein h is more than or equal to 3mm and less than or equal to 10mm, and t is more than or equal to 2mm and less than or equal to 5 mm. In the present embodiment, the height h of the boss 410 is preferably set to 6mm, and the thickness t of the boss 410 is preferably set to 3 mm.

In order to prevent the sealing sleeve 313 from being assembled by mistake, a fool-proof structure is arranged between the sealing sleeve 313 and the valve seat 311. In this embodiment, the sealing portion 313b on the end surface of the sealing sleeve 313 is provided with a protruding fool-proof rib 331, the second platform portion 3113 of the valve seat 311 is provided with a fool-proof groove 332 cooperating with the fool-proof rib 331, and the purpose of preventing the sealing sleeve 313 from being mistakenly installed is achieved through cooperation of the fool-proof rib 331 and the fool-proof groove 332.

The drain valve 310 is fixedly connected to the cup body 211 by screws, the first platform 211a is provided with a plurality of outwardly protruding hollow protruding columns 214, the seat body 3111 of the valve seat 311 is provided with mounting holes 3114 corresponding to the protruding columns 214 in a stepped hole shape, the protruding columns 214 are inserted into the mounting holes 3114, and the screws are inserted through the mounting holes 3114 and screwed into the protruding columns 214. In this embodiment, the protruding columns 214 are asymmetrically distributed, and there are three protruding columns 214, two of the protruding columns 214 are disposed on the left side of the boss 410, and the other protruding column 214 is disposed on the right side of the boss 410.

When the drainage assembly 300 is connected to the cup body 211 through screws, the boss 410 is inserted into the valve port 315, and the drainage valve 310 is positioned through the cooperation of the boss 410 and the valve port 315, which is beneficial to improving the installation efficiency of the drainage assembly 300. After the assembly is completed, the end face sealing portion 313b of the sealing sleeve 313 is located between the first platform portion 211a and the second platform portion 3113 to realize end face sealing fit between the drain valve 310 and the cup body 211, the circumferential sealing portion 313a of the sealing sleeve 313 is located between the outer wall of the boss 410 and the inner wall of the valve port 315 to realize circumferential sealing fit between the drain valve 310 and the cup body 211, and the sealing fit stability between the drain valve 310 and the cup body 211 is improved through two sealing structures, so that the sealing fit effect between the drain valve 310 and the cup body 211 is ensured.

When the machine body works, the core hole and the valve port are completely staggered, and the liquid in the grinding cup cannot be discharged. When liquid needs to be drained, the driving piece drives the valve core to rotate so that the core hole is communicated with the valve port, and liquid in the smashing cup can be drained from the smashing cup through the liquid outlet, the valve port, the core hole and the drain pipe.

It can be understood that the grinding cup 210 can also adopt a structure that the cup body, the heating plate and the cup cover are matched, the heating plate is fixed at the bottom of the cup body, the cup cover is used for covering the cup body, and at the moment, the liquid outlet 213 is arranged on the heating plate.

It is understood that discharge pipe 320 may be integrally formed with sealing sleeve 313, or discharge pipe 320 may be integrally formed with housing 3111.

It will be appreciated that the shape of the boss 410 and the shape of the valve port 315 may be configured as a circle, square, oval, or other suitable shape.

It is understood that the specific number and the specific distribution position of the convex pillars 214 are not limited to those described above and shown in the drawings, and may be provided in other reasonable numbers such as two, four, etc., and other arrangements may also be adopted.

It is understood that the height h of the boss 410 may also be set to other reasonable height values of 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.8mm, 6.2mm, 6.6mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, etc.

It is understood that the thickness t of the boss 410 may also be set to other reasonable thickness values of 2mm, 2.5mm, 2.8mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 5mm, etc.

Example two

As shown in fig. 6, 7 and 8, the circumferential sealing structure includes a boss 410 disposed on the valve seat 311 and protruding outward around the valve port 315, the boss 410 is inserted into the liquid outlet 213, an outer wall of the boss 410 is in sealing fit with an inner wall of the liquid outlet 213, the end face sealing structure includes a step surface 420 disposed on an inner wall of the liquid outlet 211, in this embodiment, the circumferential sealing portion 313a of the sealing sleeve 313 is wrapped outside the boss 410 and located in the liquid outlet 213, and the outer wall of the boss 410 is in sealing fit with the inner wall of the liquid outlet 213 through the circumferential sealing portion 313 a. The end face sealing part 313b of the sealing sleeve 313 abuts against the end face of the boss 410 facing the cup body 211, and the end face sealing part 313b is positioned between the end face of the boss 410 and the step face 420 to realize end face sealing fit between the drain valve 310 and the cup body 211. The sealing sleeve 313 is further provided with a connecting part 313C which is abutted against the inner wall of the valve port 315, and the connecting part 313C, the end face sealing part 313b and the circumferential sealing part 313a are sequentially connected to form a structure with a C-shaped one-way section.

The other structures of the second embodiment are the same as those of the first embodiment, and are not described in detail here.

EXAMPLE III

Referring to fig. 9, the valve seat 311 has a first protrusion 411 protruding outward around the valve port 315, the cup 211 has a second protrusion 412 protruding outward around the liquid outlet 213, and a step surface 420 is provided on an inner wall of the second protrusion 412. The first boss 411 is inserted into the second boss 412, and the circumferential sealing portion 313a of the sealing sleeve 313 is arranged between the outer wall of the first boss 411 and the inner wall of the second boss 412, so that the liquid discharge valve 310 and the cup body 211 are in circumferential sealing fit. The end face seal portion 313b of the seal sleeve 313 is provided between the end face of the first boss 411 and the step face 420, and achieves end face seal engagement between the drain valve 310 and the cup body 211. The sealing sleeve 313 is further provided with a connecting part 313C which is positioned on the inner wall of the valve port 315, and the connecting part 313C, the end face sealing part 313b and the circumferential sealing part 313a are sequentially connected to form a structure with a C-shaped one-way section.

Can further improve the stability of being connected between flowing back valve and the crushing cup through two boss structure to can further improve the reliability of sealing fit between flowing back valve and the crushing cup.

The other structures of the third embodiment are the same as those of the first embodiment, and are not described in detail here.

Example four

In this embodiment, a step surface is provided at the liquid outlet 213, the end face seal structure is provided between the liquid discharge valve 310 and the step surface, and the circumferential seal structure is provided on the outer periphery of the step surface. Specifically, the sealing sleeve 313 is provided with a convex rib protruding outward, the convex rib extends into the liquid outlet 213, the end face of the convex rib contacts with the step face to realize end face sealing fit, and the circumferential outer wall of the convex rib contacts with the inner wall of the liquid outlet to realize circumferential sealing fit.

The other structures of the fourth embodiment are the same as those of the first embodiment, and are not described in detail here.

Other embodiments of the present invention than the preferred embodiments described above, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, should fall within the scope of the present invention defined in the claims.

Claims

1. The utility model provides a stable in structure's food preparation machine, includes host computer, crushing unit and flowing back subassembly, and crushing unit is including smashing the cup, locating the crushing sword in smashing the cup and being used for driving the crushing motor of crushing sword, smashes the cup including the cup that is equipped with the liquid outlet and be used for the lid to close the lid of cup, and flowing back subassembly includes the flowing back valve and connects in the fluid-discharge tube of flowing back valve, and the fluid-discharge valve is connected in the cup and locates liquid outlet department, its characterized in that, the fluid-discharge valve includes disk seat, case, seal cover and driving piece, and the disk seat cavity just is equipped with the valve port with the liquid outlet intercommunication, and the case is equipped with core hole and rotatable locates in the disk seat, and the driving piece drives the rotation of core hole and makes core hole and valve port intercommunication or disconnection, and the seal cover is located between disk seat and the case, is equipped with terminal surface seal structure and encircles the circumference seal structure that the liquid outlet set up between fluid-discharge valve and the cup.

2. The food processor of claim 1, wherein the circumferential sealing structure includes a boss disposed on the cup body and protruding outward around the liquid outlet, the boss being inserted into the valve port, an outer wall of the boss being in sealing engagement with an inner wall of the valve port.

3. The food processor of claim 2, wherein the circumferential sealing structure comprises a circumferential sealing portion disposed on the sealing sleeve, the circumferential sealing portion extends into the valve port and is disposed at an outer periphery of the boss, and a sealing engagement is achieved between an outer wall of the boss and an inner wall of the valve port through the circumferential sealing portion.

4. The food processor of claim 2, wherein the face seal arrangement includes a face seal disposed on a gland, the face seal being positioned between a surface of the valve seat and a surface of the cup.

5. The food processor of claim 1, wherein the circumferential sealing structure comprises a boss disposed on the valve seat and protruding outward around the valve port, the boss being inserted into the liquid outlet, an outer wall of the boss being in sealing engagement with an inner wall of the liquid outlet.

6. The food processor of claim 5, wherein the circumferential sealing structure comprises a circumferential sealing portion disposed on the sealing sleeve, the circumferential sealing portion is wrapped outside the boss and located in the liquid outlet, and the outer wall of the boss and the inner wall of the liquid outlet are in sealing fit via the circumferential sealing portion; and/or the end face sealing structure comprises an end face sealing part arranged on the sealing sleeve and a step surface arranged on the inner wall of the liquid outlet, and the end face sealing part is positioned between the end face of the boss and the step surface to enable the end face of the boss to be in sealing fit with the step surface.

7. A food processor as claimed in claim 2 or 5, wherein the height of the outward projection of the boss is h, 3mm ≦ h ≦ 10 mm; and/or the boss is t, wherein t is more than or equal to 2mm and less than or equal to 5 mm.

8. The food processor as defined in claim 1, wherein the outlet is provided with a step surface for engaging the drain valve, the end face sealing structure is provided between the drain valve and the step surface, and the circumferential sealing structure is provided on an outer periphery of the step surface.

9. The food processor of claim 1, wherein the cup body has a sidewall with a first land, the spout is disposed at the first land, the valve seat has a sidewall with a second land that mates with the first land, the valve port is disposed at the second land, and the end face seal and the circumferential seal are disposed between the first land and the second land.

10. The food processor of claim 1, wherein one of the sealing sleeve and the valve seat is provided with a fool-proof rib, and the other is provided with a fool-proof groove cooperating with the fool-proof rib, the fool-proof rib being provided in the fool-proof groove.