CN112089305A

CN112089305A - Feeding upper cover of juicer and juicing assembly adopting same

Info

Publication number: CN112089305A
Application number: CN202011078905.2A
Authority: CN
Inventors: 万泽安
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2020-12-18

Abstract

The invention discloses a feeding upper cover of a juicer and a juicing assembly adopting the feeding upper cover; belongs to the technical field of juicers; the feeding upper cover comprises a cover body, the upper end of the cover body is provided with a safety through hole, and a feeding channel which is communicated with the safety through hole and penetrates through the lower end of the cover body is axially formed in the cover body; at least one first damping rib which is matched with the stirring cutting head on the screw rod to cut fruits and at least one second damping rib which is matched with the stirring cutting head on the screw rod to cut fruits are respectively arranged on the inner wall of the feeding channel along the feeding direction, the first damping rib is positioned on the upper side of the external stirring cutting head, and the minimum distance between the first damping rib and the central axis of the feeding channel is smaller than the maximum distance between the external stirring cutting head and the central axis of the feeding channel; the second damping ribs are positioned on the side edge of the external stirring cutting head; the invention aims to provide a feeding upper cover of a juicer and a juicing component adopting the feeding upper cover, which have the advantages of compact structure, convenience in use and good effect; for use in a juicer.

Description

Feeding upper cover of juicer and juicing assembly adopting same

Technical Field

The invention relates to a feeding upper cover, in particular to a feeding upper cover for a juicer. The invention also relates to a juicing assembly adopting the feeding upper cover.

Background

The juice extractor is developed on the basis of a conventional juice extractor, and mainly has the function of converting fruits into juice so as to improve the taste and facilitate drinking. Compare the juice extractor, it obtains fruit juice through low-speed screw extrusion, and the extrusion rotational speed is the better, and general stock machine per minute rotational speed 75 turns about, extrudes fruit juice slowly like crowded towel, does not destroy fruit cell structure, and fruit nutrition can be preserved. And the juice is discharged at low speed without generating high heat, thereby avoiding the problem of heating and oxidizing the juice.

At present, small-size juice extractor for because inside juice extraction subassembly size restriction for the input edible material need be cut into very little size and just can accomplish juice, this just requires the user to cut edible material before juice extraction, has awkward shortcoming. However, the large juicer has disadvantages of large volume, heavy weight, and difficulty in moving, although it can extract juice from the whole food material.

Disclosure of Invention

The first objective of the present invention is to provide a feeding upper cover of a juicer with compact structure, convenient use and good effect, which overcomes the disadvantages of the prior art.

The latter purpose of the invention is to provide a juicing assembly adopting the upper cover.

The former technical scheme of the invention is realized as follows: a feeding upper cover of a juicer comprises a cover body, wherein a safety through hole is formed in the upper end of the cover body, and a feeding channel which is communicated with the safety through hole and penetrates through the lower end of the cover body is axially formed in the cover body; at least one first damping rib which is matched with the stirring cutting head on the external screw rod to cut fruits and at least one second damping rib which is matched with the stirring cutting head on the external screw rod to cut fruits are respectively arranged on the inner wall of the feeding channel along the feeding direction, the first damping rib is positioned on the upper side of the external stirring cutting head, and the minimum distance between the first damping rib and the central axis of the feeding channel is smaller than the maximum distance between the external stirring cutting head and the central axis of the feeding channel; the second damping ribs are located on the outer blending cutting head side.

In the feeding upper cover of the juicer, the opening part of the cover body is hinged with the safety cover, and the safety through hole is formed in the safety cover; an elastic lock catch is arranged on the lower end face of the proximal end part of one end of the safety cover far away from the hinge part.

The safety cover is characterized in that an operating handle is arranged on the outer wall of the cover body, a lock catch hole matched with the elastic lock catch is formed in the upper end of the operating handle, when the safety cover covers the opening portion of the cover body, the elastic lock catch is fastened in the lock catch hole under the action of elastic force, and when the safety cover needs to be opened, fingers penetrate through the operating handle and stir the elastic lock catch to enable the elastic lock catch to be separated from the lock catch hole.

In the feeding upper cover of the juicer, the push rod is arranged on the safety cover on the side edge of the elastic lock catch, the operating handle is internally provided with the linkage mechanism matched with the push rod, the lower end of the linkage mechanism is provided with the magnet, the magnet is matched with the magnetic control switch on the upper part of the external base, when the push rod is separated from the linkage mechanism, the motor of the juicer is in a forced power-off state, and when the push rod is contacted with and extrudes the linkage mechanism, the motor of the juicer is in a normally controlled state.

In the feeding upper cover of the juicer, the number of the first damping ribs is 1-4, the vertical sections of the first damping ribs are right-angled triangles, and the hypotenuse of each right-angled triangle is opposite to the central axis of the feeding channel.

In the feeding upper cover of the juicer, a plurality of second damping ribs matched with the stirring cutting head on the external screw rod for cutting fruits are arranged on the inner wall of the feeding channel along the feeding direction, and the second damping ribs are circumferentially distributed at intervals along the feeding channel; the distance between the second damping ribs and the central axis of the feeding channel is larger than the maximum distance between the external stirring cutting head and the central axis of the feeding channel; the lower ends of the first damping ribs are connected with the upper ends of the second damping ribs in corresponding quantity and are integrally formed.

In the feeding upper cover of the juicer, the inner wall of the feeding channel is provided with a plurality of third damping ribs matched with the stirring cutting head on the external screw rod for cutting fruits along the feeding direction, and the second damping ribs and the third damping ribs are circumferentially distributed at intervals along the feeding channel; the distance between the third damping ribs and the central axis of the feeding channel is larger than the distance between the second damping ribs and the central axis of the feeding channel.

After the structure is adopted, the through feeding channel is arranged, so that the installation of the external stirring cutting head is facilitated, and the food material can conveniently descend; meanwhile, the first damping ribs are arranged and used for preventing the food material from idling and being matched with the stirring cutting head to coarsely crush and cut the whole food material, and the second damping ribs also play a role in preventing the food material from idling and being matched with the stirring cutting head to further crush and cut the food material, so that the food material can smoothly enter an extrusion gap formed by the screw and the filter, and the purpose of extruding juice from the big to the small of the whole food material is achieved.

The latter technical scheme of the invention is realized as follows: a juicing assembly adopting the feeding upper cover comprises a squeezing cup, wherein the opening part of the squeezing cup is detachably connected with the feeding upper cover, a filter is arranged in the squeezing cup, a screw rod is rotatably connected in the filter, and the bottom of the screw rod is connected and linked with an external driving motor; the upper end of the screw is detachably connected with a stirring cutting head.

In the juicing assembly, the outer wall of the lower end of the screw is circumferentially provided with the positioning convex ring, the lower end of the filter is provided with the pressing ring matched with the positioning convex ring, and the screw is rotatably fixed in the extruding cup through the matching of the positioning convex ring and the pressing ring; and wear-resistant pieces are arranged between the lower end face of the screw or the positioning convex ring and the extrusion cup and/or between the upper end face of the positioning convex ring and the compression ring along the circumferential direction.

In the juicing assembly, the shaft sleeve is arranged at the center of the screw rod, the steel shaft penetrates through the shaft sleeve, the annular boss opposite to the shaft sleeve is arranged at the center of the bottom in the extrusion cup, the abdicating hole is formed in the center of the annular boss, and the driving shaft of the external motor penetrates through the abdicating hole to be connected and linked with the steel shaft;

the wear-resistant piece consists of a first silica gel ring sleeved at the abdicating hole and a second silica gel ring arranged at the lower end of the pressure ring and matched with the positioning convex ring; the lower end face of the second silica gel ring is in contact with the bottom in the extrusion cup; when the screw rod idles, the first silica gel ring supports the screw rod to enable the bottom of the screw rod to be separated from the inner bottom of the extrusion cup; when juicing, the second silica gel ring prevents the positioning convex ring from contacting with the pressing ring.

In the above juice extracting assembly, the stirring cutting head comprises a connecting portion connected to the upper end of the screw, and a cutting portion integrally formed with the connecting portion and spirally extending upward.

The cutting part is provided with an inner cutting edge matched with the first damping rib and the second damping rib along the inner side surface of the spiral structure, an outer cutting edge matched with the first damping rib and the second damping rib along the outer side surface of the spiral structure, and an extruding and pushing surface along the lower surface of the spiral structure.

The bottom surface of the cutting part on the side edge of the connecting part is a plane structure which is in contact with the upper end surface of the screw rod and is in a long strip shape, a horizontal cutting edge is formed at the edge of one end, away from the connecting part, of the plane structure, and the horizontal cutting edge is positioned on the outer side of the upper end surface of the screw rod.

In the juicing assembly, the outer side surface of the free end of the cutting part is convexly provided with a first auxiliary extrusion cutting edge matched with the second damping rib, and the outer side surface of the cutting part is convexly provided with at least one second auxiliary extrusion cutting edge matched with the second damping rib along the spiral direction.

In the above juice extracting assembly, the filter is composed of an inverted circular table part with a large upper part and a small lower part and a right circular table part which is connected with the lower end of the inverted circular table part and has a small upper part and a large lower part; the included angle between the generatrix of the inverted circular table part and the central axis and the included angle between the generatrix of the right circular table part and the central axis are both 1-10 degrees; a plurality of auxiliary extrusion ribs matched with the upper parts of the main cutting edges on the screw are distributed on the inner wall of the inverted circular table part along the circumferential direction, and the upper end face of the screw is located on the upper side of the upper end face of each auxiliary extrusion rib.

After the structure is adopted, the whole food material is pre-crushed by matching the stirring cutting head with the feeding upper cover, and the crushed food material smoothly enters a gap formed by the screw and the filter so as to extrude juice. Because the stirring cutting head is positioned in the feeding upper cover and the inner diameter of the feeding channel in the feeding upper cover is much larger than the outer diameter of the screw, the juicing assembly can be used for juicing food materials with much larger radius than the screw, so that the whole food materials can be processed under the condition of smaller external dimension.

Drawings

The invention will be further described in detail with reference to examples of embodiments shown in the drawings to which, however, the invention is not restricted.

FIG. 1 is a schematic structural view of a feeding cover according to the present invention;

FIG. 2 is a schematic perspective view of the top of the cover of the present invention;

FIG. 3 is a schematic perspective view of the bottom of the cover of the present invention;

figure 4 is a schematic view of the construction of the juicer assembly of the present invention;

FIG. 5 is an exploded view of FIG. 4;

FIG. 6 is one of the structural schematic views of the stirring cutting head of the present invention;

FIG. 7 is a second schematic view of the structure of the stirring cutting head of the present invention;

FIG. 8 is a third schematic view of the structure of the stirring cutting head of the present invention;

FIG. 9 is a schematic cross-sectional view of a filter according to the present invention;

fig. 10 is a schematic perspective view of the filter of the present invention.

In the figure: 1. a cover body; 1a, a safety through hole; 1b, a feed channel; 1c, first damping ribs; 1d, second damping ribs; 1e, an operating handle; 1f, locking holes; 1g, third damping ribs; 1h, positioning a ring; 1i, connecting lugs; 2. a safety cover; 2a, elastic locking; 2b, a push rod; 2c, a linkage mechanism; 2d, a magnet; 3. extruding the cup; 3a, an annular boss; 3b, positioning a groove; 3c, connecting a bayonet; 4. a filter; 4a, pressing a ring; 4b, rounding the boss part; 4c, a right circular table part; 4d, auxiliary extrusion of ribs; 4e, positioning the lug; 5. a screw; 5a, positioning convex rings; 5b, shaft sleeves; 5c, a steel shaft; 6. a stirring cutting head; 6a, a connecting part; 6b, a cutting part; 6c, an inner cutting edge; 6d, an external cutting edge; 6e, extruding the pushing surface; 6f, horizontal cutting edge; 6g, a first auxiliary extrusion cutting edge; 6h, a second auxiliary extrusion cutting edge; 7. a wear part; 7a, a first silica gel ring; 7b and a second silica gel ring.

Detailed Description

Referring to fig. 1 to 3, the feeding upper cover of the juicer comprises a cover body 1, wherein a safety through hole 1a is formed in the upper end of the cover body 1, the safety through hole is of a national standard size, and the maximum cross-sectional size is not more than about 43 mm. A feed channel 1b which is communicated with the safety through hole 1a and penetrates through the lower end of the cover body 1 is formed in the cover body 1 along the axial direction. The feed channel that link up, do not have the structure that shelters from in the feed channel promptly, both made things convenient for edible material to descend, do not influence again that outside stirring cutting head stretches into in the feed channel and rotates.

At least one first damping rib 1c matched with the stirring cutting head on the external screw rod to cut fruits and at least one second damping rib 1d matched with the stirring cutting head on the external screw rod to cut fruits are arranged on the inner wall of the feeding channel 1b along the feeding direction. The arrangement directions of the first damping ribs and the second damping ribs can be axial or inclined at a certain angle, which are common knowledge of those skilled in the art and are not described herein again.

The first damping ribs 1c are positioned on the upper side of the external stirring cutting head, and the minimum distance between the first damping ribs 1c and the central axis of the feed channel 1b is smaller than the maximum distance between the external stirring cutting head and the central axis of the feed channel 1 b; the second damping ribs 1d are located on the outer blending cutting head side. The effect of first damping rib is that the idle running of large granule or whole edible material along the feedstock channel is stopped to the effect, and its quantity of setting is decided according to the size of feedstock channel, and when the feedstock channel bore is little, then the quantity of first damping rib reduces as far as possible to improve the feeding size.

Preferably, the number of the first damping ribs 1c is 1-4 and the vertical section thereof is a right triangle, the hypotenuse of which is opposite to the central axis of the feed channel 1 b. Of course, the shape of the first damping ribs may be other shapes conventional in the art, such as arc, trapezoid, etc., as long as it can prevent the idle rotation of the large-sized food material.

Preferably, a plurality of second damping ribs 1d matched with the stirring cutting head on the external screw rod for cutting the fruits are arranged on the inner wall of the feeding channel 1b along the feeding direction, and the second damping ribs 1d are circumferentially distributed at intervals along the feeding channel 1 b; the distance between the second damping ribs 1d and the central axis of the feeding channel 1b is larger than the maximum distance between the external stirring cutting head and the central axis of the feeding channel 1 b; the lower ends of the first damping ribs 1c are connected with the upper ends of the second damping ribs 1d in corresponding quantity and are integrally formed. The second damping ribs are matched with the external stirring cutting head to further cut and crush the food materials, so that the food materials can conveniently enter an extrusion gap formed by the screw and the filter to be finally extruded to obtain juice.

Further preferably, the opening part of the cover body 1 is hinged with a safety cover 2, and the safety through hole 1a is arranged on the safety cover 2; an elastic lock catch 2a is arranged on the lower end face of the proximal end part of one end of the safety cover 2 far away from the hinge part. Of course, the cover body and the safety cover may also adopt other connecting modes which are conventional in the art, such as screwing and buckling to be detachably connected.

In addition, when the product size is small, the safety cover can be integrally formed on the feeding upper cover. Of course, when such a structure is adopted, the position and structure of the corresponding safety sensing switch need to be readjusted. But these are readily apparent to those skilled in the art.

An operating handle 1e is arranged on the outer wall of the cover body 1, a lock catch hole 1f matched with the elastic lock catch 2a is arranged at the upper end of the operating handle 1e, when the safety cover 2 covers the opening part of the cover body 1, the elastic lock catch 2a is fastened in the lock catch hole 1f under the action of elasticity, and when the safety cover 2 needs to be opened, fingers penetrate through the operating handle 1e and poke the elastic lock catch 2a to be separated from the lock catch hole 1 f. By adopting the structure, the opening and closing of the safety cover are skillfully realized. The cooperation of elastic lock catch and hasp hole can adopt the conventional technique in this field, for example the structure in this embodiment sets up hook portion on elastic lock catch, sets up the boss with hook portion matched with in hasp hole side, and the setting of boss makes hook portion can keep away from the connecting portion of elastic lock catch and lid as far as possible for it is when the operation, need not take place too big elastic deformation, can realize the separation of hook portion and boss.

In order to improve the use safety of the device, a push rod 2b is arranged on a safety cover 2 on the side edge of an elastic lock catch 2a, a linkage mechanism 2c matched with the push rod 2b is arranged in an operating handle 1e, a magnet 2d is arranged at the lower end of the linkage mechanism 2c, the magnet 2d is matched with a magnetic control switch on the upper portion of an external machine base, when the push rod 2b is separated from the linkage mechanism 2c, the motor of the juicer is in a forced power-off state, and when the push rod 2b contacts and extrudes the linkage mechanism 2c, the motor of the juicer is in a normally controlled state.

Preferably, in order to improve the pre-crushing effect of the food materials, a plurality of third damping ribs 1g matched with the stirring cutting head on the external screw rod to cut fruits are arranged on the inner wall of the feeding channel 1b along the feeding direction, and each second damping rib 1d and each third damping rib 1g are circumferentially distributed at intervals along the feeding channel 1 b; the distance between the third damping ribs 1g and the central axis of the feed channel 1b is larger than the distance between the second damping ribs 1d and the central axis of the feed channel 1 b. The second damping ribs and the third damping ribs can be arranged in a staggered mode or arranged in sequence and are determined according to the number of the ribs and the inner diameter size of the feeding channel.

Referring to fig. 4 to 10, the juice extracting assembly using the feeding upper cover according to the present invention includes a squeezing cup 3, the feeding upper cover is detachably connected to an opening portion of the squeezing cup 3, and a filter 4 is disposed in the squeezing cup 3. Specifically, a plurality of positioning lugs 4e are circumferentially distributed on the outer wall of the upper proximal end part of the filter, and positioning grooves 3b corresponding to the positioning lugs one to one are arranged on the extruding cup. Meanwhile, an L-shaped connecting bayonet 3c connected with the feeding upper cover in a buckling manner is arranged in the extrusion cup at the upper end of the positioning groove, a positioning ring 1h is arranged at the lower end of the feeding upper cover, and connecting lugs 1i corresponding to the connecting bayonets one by one are arranged on the outer wall of the positioning ring 1h along the circumferential direction. When the connecting lug and the connecting buckle are fastened, the lower end face of the positioning ring presses the positioning lug, and the upper end face of the positioning lug and the lower end face of the connecting buckle are located on the same plane when the positioning lug is installed in the positioning groove.

What adopt in this embodiment is integrated into one piece's filter, forms the microscler filtration pore of crossing of big-end-up in the interior by horizontal annular muscle and vertical rib cooperation, and integrated into one piece has vertical extrusion rib in the filter simultaneously.

A screw rod 5 is rotationally connected in the filter 4, and the bottom of the screw rod 5 is connected and linked with an external driving motor; an agitating cutting head 6 is detachably attached to the upper end of the screw 5. The mixing and cutting head 6 is preferably located in the feeding upper cover, but of course, the upper end of the filter can extend upwards to cover the periphery of the mixing and cutting head under the condition that the shape structure of the mixing and cutting head is kept unchanged, and the effect is the same. And (4) delaying on the filter, and adjusting the corresponding damping ribs in the feeding upper cover to the inner wall of the filter at the periphery of the stirring cutting head according to actual conditions. Meanwhile, the stirring cutting head is preferably arranged coaxially with the screw rod, so that the stirring cutting head and the steel shaft can be conveniently fixed by the same screw in the follow-up process. Of course, the stirring cutting head may also be mounted eccentrically if the ease of coupling is not a concern.

The key technology of the invention is that the feeding upper cover is of a bottomless structure, and the feeding channel is arranged in a penetrating manner, so that the stirring cutting head can conveniently extend into the feeding upper cover to pre-cut and crush food materials, and the juicing assembly can still directly juice food materials with larger sizes under the condition of smaller external dimensions, such as whole apples, whole peeled oranges and the like, so that the products can conveniently and quickly juice the food materials with larger sizes on the premise of smaller size and lighter weight.

In order to facilitate disassembly and assembly and avoid abrasion at the same time, the outer wall of the lower end of the screw rod 5 is circumferentially provided with a positioning convex ring 5a, the lower end of the filter 4 is provided with a pressing ring 4a matched with the positioning convex ring 5a, and the screw rod 5 is rotatably fixed in the extrusion cup 3 through the matching of the positioning convex ring 5a and the pressing ring 4 a; and a wear-resistant part 7 is arranged between the lower end face of the screw rod 5 or the positioning convex ring 5a and the extrusion cup 3 and/or between the upper end face of the positioning convex ring 5a and the compression ring 4a along the circumferential direction. The wear-resistant part is preferably a food-grade silica gel ring, and of course, can also be a non-connected salient point supporting structure, and can also be a combined wear-resistant metal structure.

In this embodiment, a shaft sleeve 5b is arranged at the center of the screw rod 5, a steel shaft 5c penetrates through the shaft sleeve 5b, an annular boss 3a opposite to the shaft sleeve 5b is arranged at the center of the bottom in the extrusion cup 3, a yielding hole is arranged at the center of the annular boss 3a, and an external motor driving shaft penetrates through the yielding hole to be connected and linked with the steel shaft 5 c.

The wear-resistant part 7 consists of a first silica gel ring 7a sleeved at the abdicating hole and a second silica gel ring 7b arranged at the lower end of the pressing ring 4a and matched with the positioning convex ring 5 a; the lower end face of the second silica gel ring 7b is contacted with the bottom in the extrusion cup 3; when the screw 5 idles, the first silica gel ring 7a supports the screw 5 to enable the bottom of the screw to be separated from the bottom in the extrusion cup 3; when juicing, the second silicone ring 7b prevents the positioning convex ring 5a from contacting with the press ring 4 a. The shape of the second silica gel ring and the connection mode of the second silica gel ring and the pressure ring can be diversified. The positioning convex ring and the pressing ring are separated from each other when the juice is squeezed, and the filter is supported and fixed more stably. In this embodiment, the lower end of the pressing ring is integrally formed with a connecting ring, and the second silicone ring is in a U-shaped structure and is fastened to the connecting ring. Meanwhile, the inner end face of the second silica gel ring horizontally extends the isolating ring isolating press ring and the positioning convex ring.

This is of course a preferred embodiment and does not constitute a limitation on the specific structure of the wear part. The wear-resisting part is preferably used for preventing the screw rod from contacting with the bottom in the extruding cup during idling and preventing the positioning convex ring from contacting with the pressing ring during juicing.

And a slag hole is arranged on the side wall of the lower part of the filter and communicated with a slag hole on the extrusion cup. A juice outlet is arranged on the extruding cup at the side of the residue outlet.

In the present embodiment, the stirring and cutting head 6 is composed of a coupling portion 6a coupled to the upper end of the screw 5 and a cutting portion 6b formed integrally with the coupling portion 6a and extending spirally upward. And a connecting hole is axially formed in the stirring cutting head along the connecting part, and a screw penetrates through the connecting hole to be connected with the screw rod. Preferably, a steel shaft is arranged in the screw, the steel shaft is connected and linked with an external driving motor, meanwhile, an internal threaded hole is formed in the upper end of the steel shaft, a screw penetrating through the stirring cutting head is in threaded connection with the upper end of the steel shaft, and the stirring cutting head and the steel shaft are fixed simultaneously through the ingenious structure.

The cutting part 6b is provided with an inner cutting edge 6c matched with the first damping rib 1c and the second damping rib 1d along the inner side surface of the spiral structure, an outer cutting edge 6d matched with the first damping rib 1c and the second damping rib 1d along the outer side surface of the spiral structure, and an extrusion material pushing surface 6e along the lower surface of the spiral structure.

The bottom surface of the cutting part 6b at the side of the connecting part 6a is a plane structure contacted with the upper end surface of the screw rod 5, one end edge of the plane structure far away from the connecting part 6a forms a horizontal cutting edge 6f, and the horizontal cutting edge 6f is positioned outside the upper end surface of the screw rod 5.

Preferably, the cross section of the connecting part is quadrilateral, which not only prevents the rotation of the stirring cutting head, but also facilitates the adjustment of the installation angle of the stirring cutting head relative to the screw. The main cutting edge upper end face which is positioned on the same plane with the screw rod upper end face has the function equivalent to a horizontal cutting edge, and can cut and crush food materials with larger particles. Experiments show that when the cutting tool is installed, a reasonable included angle is kept between the horizontal cutting edge and the upper end face of the main cutting edge, and a better cutting effect is achieved. Preferably, when the horizontal cutting edge is 90 degrees or 180 degrees with the upper end surface of the main cutting edge and the free end of the cutting part is far away from the upper end surface of the main cutting edge, the cutting of the large-particle food material has unexpected effect, and the large-particle food material can be cut and crushed from large to small rapidly. Compared with other installation angles, the speed of cutting and crushing is improved by at least 30 percent. Therefore, the cross section of the connecting part is set to be quadrilateral, and the included angle between the upper end surface of the main cutting edge and the horizontal cutting edge can be rapidly and accurately ensured.

Further preferably, a first auxiliary extrusion cutting edge 6g matched with the second damping rib 1d is convexly arranged on the outer side surface of the free end of the cutting part 6b, and at least one second auxiliary extrusion cutting edge 6h matched with the second damping rib 1d is convexly arranged on the outer side surface of the cutting part 6b along the spiral direction. During the experiment, some fruits with smoother surfaces, such as non-peeled apples, can only cut the food material but not easily drive the food material due to the smooth surface of the cutting part in the whole reducing process, so that the food material can slip, and the food material can be further cut and crushed only when the angle of the food material is changed after the screw rod rotates for a plurality of circles. After addding first supplementary extrusion cutting edge and the supplementary extrusion cutting edge of second, the problem of eating the material and skidding obtains stopping, has unexpected effect.

Further preferably, when the food material just enters the main cutting edge at the upper part of the screw, the food material can be prevented from slipping due to the larger distance between the cutting edges, and more food material can be smoothly fed into the extrusion gap formed by the filter and the screw. The filter 4 consists of an inverted circular table part 4b with a large upper part and a small lower part and a positive circular table part 4c which is connected to the lower end of the inverted circular table part 4b and has a small upper part and a large lower part; the included angle between the generatrix of the inverted circular truncated part 4b and the central axis and the included angle between the generatrix of the right circular truncated part 4c and the central axis are both 1-10 degrees. Correspondingly, the whole screw rod is also a right circular table switch with a small upper part and a big lower part. The specific included angle of each part is determined according to the size of the product. The structure of the filter not only facilitates the entering of food materials, but also has the auxiliary effect of avoiding the screw rod from being stringed because the lower round platform of the lower part of the filter is matched with the screw rod. When the screw is disassembled, the filter must be taken down firstly, and the screw can be disassembled.

A plurality of auxiliary extrusion ribs 4d matched with the upper part of the main cutting edge on the screw 5 are distributed on the inner wall of the inverted circular truncated part 4b along the circumferential direction. The auxiliary extrusion ribs are preferably formed by upward extending of the upper ends of a plurality of extrusion ribs, and the inner end faces, facing the axis, of the auxiliary extrusion ribs and the extending face of the right circular table part are located on the same annular arc face.

Further preferably, the upper end surface of the screw 5 is located on the upper side of the upper end surface of the auxiliary extrusion rib 4 d. At this moment, the interval of supplementary extrusion rib to filter axis is less than the interval of stirring cutting edge outermost end to filter axis, and both form the dislocation, can carry out supplementary extrusion cutting to eating the material, make to eat the material and be changeed by the breakage and enter into in the filter.

Of course, depending on the product size, the upper end face of the screw can also be flush with or on the underside of the auxiliary pressing ribs or the filter upper end face. For example, when the product size is large and the clearance between the upper portion of the screw and the rounded table portion is large. As will be readily appreciated by those skilled in the art.

Through setting up supplementary extrusion rib, reduce the space between the main cutting edge, can make the edible material effectively by the breakage of cutting and the guide effect of main cutting edge and move down.

When the juicer works, the whole or large-particle food materials are placed into the feeding channel, the food materials are gradually extruded, cut and crushed into small-particle food materials under the action of the stirring cutting head and the damping ribs, and finally the small-particle food materials enter an extrusion gap formed by the screw and the filter, so that juice and residue separation is realized, and juice squeezing is completed.

The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art will understand that the technical features of the present invention can be modified or changed by other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A feeding upper cover of a juicer comprises a cover body (1), wherein a safety through hole (1a) is formed in the upper end of the cover body (1), and is characterized in that a feeding channel (1b) which is communicated with the safety through hole (1a) and penetrates through the lower end of the cover body (1) is formed in the cover body (1) along the axial direction; at least one first damping rib (1c) which is matched with a stirring cutting head on an external screw rod to cut fruits and at least one second damping rib (1d) which is matched with the stirring cutting head on the external screw rod to cut fruits are respectively arranged on the inner wall of the feeding channel (1b) along the feeding direction, the first damping rib (1c) is positioned on the upper side of the external stirring cutting head, and the minimum distance between the first damping rib (1c) and the central axis of the feeding channel (1b) is smaller than the maximum distance between the external stirring cutting head and the central axis of the feeding channel (1 b); the second damping ribs (1d) are located on the outer mixing cutting head side.

2. A feeding upper cover of a juice extractor according to claim 1, characterized in that the opening of the cover body (1) is hinged with a safety cover (2), the safety through hole (1a) is arranged on the safety cover (2); an elastic lock catch (2a) is arranged on the lower end face of the proximal end part of one end of the safety cover (2) far away from the hinge part;

be provided with operating handle (1e) on lid (1) outer wall, be provided with in operating handle (1e) upper end with elasticity hasp (2a) matched with hasp hole (1f), when safety lid (2) lid when lid (1) opening, elasticity hasp (2a) are in hasp hole (1f) the straining under the spring action, when needs open safety lid (2), the finger passes operating handle (1e) and stirs elasticity hasp (2a) and makes it break away from with hasp hole (1 f).

3. A feeding upper cover of a juice extractor according to claim 2, characterized in that a push rod (2b) is arranged on the safety cover (2) at the side of the elastic lock catch (2a), a linkage mechanism (2c) matched with the push rod (2b) is arranged in the operating handle (1e), a magnet (2d) is arranged at the lower end of the linkage mechanism (2c), the magnet (2d) is matched with a magnetic control switch at the upper part of the external base, when the push rod (2b) is separated from the linkage mechanism (2c), the motor of the juice extractor is in a forced power-off state, and when the push rod (2b) contacts and extrudes the linkage mechanism (2c), the motor of the juice extractor is in a normally controlled state.

4. A feeding cover according to claim 1, characterized in that said first damping ribs (1c) are 1-4 in number and have a right triangle in vertical section with the hypotenuse opposite the central axis of the feeding channel (1 b).

5. A feeding upper cover of a juice extractor according to claim 4, characterized in that the inner wall of the feeding channel (1b) is provided with a plurality of second damping ribs (1d) which are matched with the stirring cutting head on the external screw rod to cut fruit along the feeding direction, and each second damping rib (1d) is distributed at intervals along the circumferential direction of the feeding channel (1 b); the distance between the second damping ribs (1d) and the central axis of the feeding channel (1b) is larger than the maximum distance between the external stirring cutting head and the central axis of the feeding channel (1 b); the lower ends of the first damping ribs (1c) are connected with the upper ends of the second damping ribs (1d) in corresponding quantity and are integrally formed.

6. A feeding upper cover of a juice extractor according to claim 5, characterized in that the inner wall of the feeding channel (1b) is provided with a plurality of third damping ribs (1g) which are matched with the stirring cutting head on the external screw rod to cut fruit along the feeding direction, and each second damping rib (1d) and each third damping rib (1g) are distributed at intervals along the circumferential direction of the feeding channel (1 b); the distance between the third damping ribs (1g) and the central axis of the feeding channel (1b) is larger than the distance between the second damping ribs (1d) and the central axis of the feeding channel (1 b).

7. A juicing assembly adopting the feeding upper cover of any one of the preceding claims, comprising a squeezing cup (3), wherein the feeding upper cover is detachably connected to the opening part of the squeezing cup (3), a filter (4) is arranged in the squeezing cup (3), a screw (5) is rotatably connected in the filter (4), and the bottom of the screw (5) is connected and linked with an external driving motor; the upper end of the screw (5) is detachably connected with a stirring cutting head (6).

8. The juicing assembly according to claim 7, wherein the outer wall of the lower end of the screw rod (5) is circumferentially provided with a positioning convex ring (5a), the lower end of the filter (4) is provided with a pressing ring (4a) matched with the positioning convex ring (5a), and the screw rod (5) is rotatably fixed in the squeezing cup (3) through the matching of the positioning convex ring (5a) and the pressing ring (4 a);

and a wear-resistant part (7) is arranged between the lower end face of the screw rod (5) or the positioning convex ring (5a) and the extrusion cup (3) and/or between the upper end face of the positioning convex ring (5a) and the compression ring (4a) along the circumferential direction.

9. The juicing assembly according to claim 8, wherein a shaft sleeve (5b) is arranged at the center of the screw (5), a steel shaft (5c) penetrates through the shaft sleeve (5b), an annular boss (3a) opposite to the shaft sleeve (5b) is arranged at the center of the bottom in the extrusion cup (3), a relief hole is formed in the center of the annular boss (3a), and an external motor driving shaft passes through the relief hole to be connected and linked with the steel shaft (5 c);

the wear-resistant piece (7) consists of a first silica gel ring (7a) sleeved at the yielding hole and a second silica gel ring (7b) arranged at the lower end of the pressing ring (4a) and matched with the positioning convex ring (5 a); the lower end face of the second silica gel ring (7b) is in contact with the bottom in the extrusion cup (3); when the screw (5) idles, the first silica gel ring (7a) supports the screw (5) to enable the bottom of the screw to be separated from the inner bottom of the extrusion cup (3); when juicing, the second silica gel ring (7b) prevents the positioning convex ring (5a) from contacting with the pressing ring (4 a).

10. A juicing assembly as claimed in claim 7, characterized in that the stirring cutting head (6) consists of a coupling portion (6a) coupled to the upper end of the screw (5) and a cutting portion (6b) integrally formed with the coupling portion (6a) and extending spirally upwards;

an inner cutting edge (6c) matched with the first damping rib (1c) and the second damping rib (1d) is formed on the cutting part (6b) along the inner side face of the spiral structure, an outer cutting edge (6d) matched with the first damping rib (1c) and the second damping rib (1d) is formed along the outer side face of the spiral structure, and an extrusion pushing face (6e) is formed along the lower surface of the spiral structure;

the bottom surface of the cutting part (6b) at the side of the connecting part (6a) is a plane structure which is contacted with the upper end surface of the screw rod (5), one end edge of the plane structure, which is far away from the connecting part (6a), forms a horizontal cutting edge (6f), and the horizontal cutting edge (6f) is positioned outside the upper end surface of the screw rod (5).

11. A juicing assembly as claimed in claim 10, characterized in that a first auxiliary squeezing cutting edge (6g) matched with the second damping rib (1d) is convexly arranged on the outer side of the free end of the cutting part (6b), and at least one second auxiliary squeezing cutting edge (6h) matched with the second damping rib (1d) is convexly arranged on the outer side of the cutting part (6b) along the spiral direction.

12. A juicing assembly as claimed in claim 7, characterized in that the filter (4) consists of an inverted circular truncated portion (4b) with a large upper part and a small lower part and a right circular truncated portion (4c) with a small upper part and a large lower part, which is connected to the lower end of the inverted circular truncated portion (4 b); the included angle between the generatrix of the reverse circular truncated part (4b) and the central axis is 1-10 degrees, and the included angle between the generatrix of the positive circular truncated part (4c) and the central axis is 1-10 degrees;

a plurality of auxiliary extrusion ribs (4d) matched with the upper part of the main cutting edge on the screw rod (5) are distributed on the inner wall of the inverted circular truncated part (4b) along the circumferential direction, and the upper end face of the screw rod (5) is positioned on the upper side of the upper end face of the auxiliary extrusion ribs (4 d).