CN108851924B

CN108851924B - Vertical screw extrusion juice extractor

Info

Publication number: CN108851924B
Application number: CN201810961843.6A
Authority: CN
Inventors: 王旭宁; 王丽军; 张玉印
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2015-03-18
Filing date: 2015-03-18
Publication date: 2021-01-08
Anticipated expiration: 2035-03-18
Also published as: CN108836097A; CN106031591B; CN108851924A; CN106031591A

Abstract

The invention discloses a vertical screw extrusion juicer, which comprises a base, a motor arranged in the base, an extrusion screw, a squeezing cavity matched with the extrusion screw for extruding materials, and an upper cover arranged above the squeezing cavity, wherein the squeezing cavity is arranged on the base, the extrusion screw is arranged in the squeezing cavity, the upper cover is provided with a containing part which protrudes upwards and is used for containing the upper part of the extrusion screw, the side wall of the containing part is provided with a feed inlet and a feed channel connected with the feed inlet, the included angle between the connecting line of the geometric centers of two ports of the feed channel and a vertical plane is a, a is more than or equal to 30 degrees and less than or equal to 60 degrees, so that the materials can quickly enter the containing part through the feed channel by means of the gravity of the materials and can be quickly brought into a juicing gap formed by an extrusion grinding part of the extrusion screw and the squeezing cavity for extrusion under the downward guide action of a material, the quick automatic feeding is easily realized.

Description

Vertical screw extrusion juice extractor

The present application is a divisional application filed according to the patent Law implementation rule No. 42, and the original application is the application with the application number CN201510117862.7 and the name "a vertical screw extrusion juicer" filed 3, 18/2015.

Technical Field

The invention relates to the field of food processing machines, in particular to a vertical screw extrusion juicer.

Background

The existing screw extrusion juicers generally comprise a horizontal screw extrusion juicer and a vertical screw extrusion juicer. The vertical screw extrusion juicer generally comprises an upper cover, a squeezing cavity, a screw, a mesh cylinder matched with the screw, a rotary brush and a driving unit, wherein a feeding port is formed in the upper part of the upper cover in one case, the juicer utilizes the characteristic that the gravity of materials flows downwards, the problem of extrusion and crushing of the materials is solved, and meanwhile, the machine base is arranged at the bottom, so that the stability of the juicer is good. However, the pan feeding mouth setting of this scheme is in the screw rod top, and the material gets into the shell after, falls in the spiral top of screw rod, is difficult to the feeding, if the material falls into the position that is close the axle center simultaneously, because axle center position rotational speed is zero, also makes the feeding slower, can cause the material to pile up moreover, influences extrusion on next step and smashes, and this structure is difficult to realize heavy-calibre pan feeding yet. The other kind of condition is with the feed inlet setting on squeezing the chamber, and extrusion screw holds in squeezing the chamber, and the upper cover is used for sealing the top of squeezing the chamber, and this just leads to squeezing intracavity portion too deeply with extrusion screw complex, not only is unfavorable for the dismouting and the washing of juice extractor, and the juice extractor squeezes the chamber and produces radial swing easily at the course of the work moreover, and the accessory loss is great, and is also great to the life-span loss of juice extractor.

Disclosure of Invention

The invention aims to provide a durable vertical screw extrusion juicer which is quick in feeding, easy to disassemble and assemble and easy to clean.

In order to solve the technical problem, the invention provides a vertical screw extrusion juicer which comprises a base, a motor, an extrusion screw, a squeezing cavity and an upper cover, wherein the motor is arranged in the base, the squeezing cavity is matched with the extrusion screw to extrude materials, the upper cover is arranged above the squeezing cavity, the squeezing cavity is arranged on the base, the extrusion screw is arranged in the squeezing cavity and comprises a material pushing part and an extrusion grinding part, the upper cover is provided with a containing part which protrudes upwards and is used for containing the upper part of the extrusion screw, the side wall of the containing part is provided with a feed inlet and a feed channel connected with the feed inlet, the included angle between the central line of the feed channel at the feed inlet and a vertical plane is a, and a is more than or equal to 30 degrees and.

Further, the material propelling part is used for guiding the material downwards, the material propelling part comprises a body and a propelling spiral arranged on the body, and the body is cylindrical or in a circular truncated cone shape with a small upper part and a large lower part.

Further, the material propelling part is in transitional connection with the extrusion grinding part, and the propelling screw extends to the extrusion grinding part from the upper end of the body.

Further, the containing part is in a straight cylinder shape or a tapered cylinder shape with a small upper part and a large lower part, and the ratio of the equivalent diameter of the feed port to the equivalent diameter of the containing part is 2/3-4/3.

Further, the ratio of the height of the containing part to the equivalent diameter of the containing part is 4/5-13/5, and the inner wall of the containing part is provided with pressing ribs.

Furthermore, an upper rotating shaft is arranged at the upper end of the extrusion screw, a rotating shaft hole for accommodating the upper rotating shaft is formed in the center of the top wall of the accommodating part, a top end surface matched with the top wall of the accommodating part is further arranged at the upper end of the extrusion screw, and the upper rotating shaft is arranged on the top end surface; or, the top wall center department of holding portion is equipped with the top rotation axle, the extrusion screw rod upper end is equipped with and is used for holding the rotation axis hole of top rotation axle, the extrusion screw rod upper end still be equipped with holding portion top wall complex top face, rotation axis hole is located on the top face.

Furthermore, the lower end of the upper cover is matched with the upper end of the squeezing cavity, a buckle is arranged on the inner side wall of the upper end of the squeezing cavity, the lower end of the upper cover extends downwards to form an annular surrounding edge, a clamping groove is formed in the side wall of the annular surrounding edge, and the buckle is screwed into the clamping groove to fix the upper cover on the squeezing cavity.

Further, feedstock channel includes port and lower port, and lower port is connected with the feed inlet of portion of holding, it is equipped with rotatory lid to go up the port, rotatory lid articulates in port one side, rotatory lid is equipped with supplementary feed inlet, supplementary feed inlet department is equipped with keeps off the muscle, keep off in the muscle downwardly extending stretches into feedstock channel, when rotatory lid is opened the port, it shelters from to keep off the muscle go up the port.

Furthermore, the feeding channel comprises an upper port and a lower port, the lower port is connected with the feeding hole of the containing part, the upper port is movably provided with a rotatable rotating cover, the rotating center of the rotating cover traverses the upper port, and the rotating cover is used for placing materials and can rotate around the rotating center in any direction so as to enable the materials to enter the feeding channel.

Further, feedstock channel includes port and lower port, and the lower port is connected with the feed inlet of portion of holding, the port is equipped with rotatory lid on going up, rotatory lid articulates in port one side on going up, rotatory lid includes first lid and second lid, when port was opened to first lid, the second lid sheltered from go up the port.

In the invention, the equivalent diameter of the feed inlet refers to the maximum inscribed circle diameter of the feed inlet; the "equivalent diameter of the receiving portion" means the maximum inscribed circle diameter of the receiving portion.

The invention has the beneficial effects that:

1. the upper cover is provided with the accommodating part which protrudes upwards and is used for accommodating the upper part of the extrusion screw, the accommodating part is arranged, the accommodating space of materials is enlarged, the materials enter the accommodating part under the action of gravity after passing through the feeding channel, and sufficient materials are ensured to be matched with the material pushing part of the extrusion screw in the accommodating part for primary crushing. In addition, the extrusion screw comprises a material pushing part and an extrusion grinding part, one part of the extrusion screw is arranged in the containing part of the upper cover, and the other part of the extrusion screw is arranged in the squeezing cavity, so that the structure of the juicer is more reasonable, and the extrusion screw, the upper cover and the squeezing cavity are convenient to disassemble, assemble and clean. The containing parts of the squeezing cavity and the upper cover are jointly used for containing the squeezing screw, so that the depth of the squeezing cavity and the containing parts cannot be too deep, the upper cover and the squeezing cavity are not easy to generate cleaning dead angles, and the aim of easily cleaning the juicer is fulfilled.

Owing to set up feed inlet and feedstock channel at the lateral wall of portion of holding, the central line of feedstock channel of feed inlet department becomes 30 a with vertical planar contained angle and is less than or equal to 60, make material and extrusion screw center pin become same contained angle, be equivalent to the slant blowing, make the material rely on the gravity of self can be very fast in feedstock channel directly gets into the portion of holding, and be brought into extrusion screw's extrusion grinding portion fast and squeeze in the juice clearance that the chamber formed and extrude under the downward guide effect of the material propulsion portion of feed inlet corresponding position, easily realize quick automatic feed. When a is less than 30 degrees, although rapid blanking can be realized, the distance between the material and the center of the extrusion screw when the material reaches the lower port is short, the rotating speed of the extrusion screw is small, the borne torque is large, and the material cannot be bitten or pre-crushed. When a is greater than 60 degrees, the feeding channel is too gentle, the friction force between the materials and the feeding channel is large, the materials are not favorable for quick feeding, and the juice squeezing efficiency is reduced. Simultaneously, the feedstock channel that the slope set up is elongated for the pipeline of vertical placing, prevents effectively that people's hand from stretching into feedstock channel too deeply for juice extractor's security is higher, and simple structure, and easy machine-shaping.

In addition, because the feed inlet sets up on the lateral wall of the portion of holding of upper cover, then the size and the position of feeding bore needn't receive extrusion screw and the influence of the portion diameter size of holding, can easily realize heavy-calibre pan feeding, when adopting heavy-calibre, because the line of the geometric centre of feedstock channel both ends mouth becomes contained angle a with vertical plane, the impact force of material to extrusion screw is decomposed into axial and horizontal direction, consequently, the extrusion force of material to the spiral direction of extrusion screw diminishes for the motor moment of torsion diminishes, effectively reduced the motor load, not only the feeding is more smooth and easy, and the motor is stable, long-lived.

2. Extrusion screw includes material propulsion portion and extrusion grinding portion, the feed inlet setting that material propulsion portion corresponds the portion of holding for the material relies on self gravity and under the contained angle effect of feedstock channel and vertical face, enters into the portion of holding of upper cover, the material propulsion portion that is located the portion of holding guides the material downwards, and material propulsion portion still includes the body and locates the propulsion spiral on the body, the body is cylindrical or big-end-up's round platform shape, makes the material more easily introduced extrusion screw's material propulsion portion, carries out the precomminution of material and smashes effectually. The material propulsion portion is connected with extrusion grinding portion transitional coupling, it extends to extrusion grinding portion by the body upper end to impel the spiral for the feeding of juice extractor is more smooth and easy, and the material is bitten into absolutely and under its effect by impel the spiral, is brought into extrusion grinding portion fast and squeezes the squeezing juice in the clearance that the chamber formed, realizes quick automatic feed and makes the material extruded juice, has improved the play juice efficiency and the play juice rate of juice extractor.

3. The material propelling part comprises a body and a propelling screw arranged on the body, the body is in a cylindrical shape or a truncated cone shape with a small top and a large bottom, the corresponding containing part is in a straight cylinder shape or a tapered cylinder shape with a small top and a large bottom, so that a certain gap is formed between the material propelling part and the containing part of the extruding screw, the extruding screw cannot rub against the inner wall of the containing part in the rotating process, the inner wall of the containing part is provided with squeezing ribs which play a role in stopping the primary crushing of the material, so that the material is brought into the propelling screw by the rotating extruding screw to be subjected to the primary crushing, cannot be rotated in the containing part, is cut along the propelling screw under the stopping effect of the squeezing ribs, and then the material subjected to the primary crushing is rapidly brought into the gap formed by the extruding grinding part and the squeezing cavity by the downward rotation of the propelling screw to be subjected to secondary crushing and squeezing for squeezing, the ratio of the height of the containing part to the equivalent diameter of the containing, guarantee can hold extrusion screw and propulsive material downwards, realize squeezing out juice fast, improve the juice extractor's play juice efficiency, when the ratio is less than 4/5, do not have sufficient space to hold material propulsion portion under satisfying complete machine outward appearance structure and figurative prerequisite, when the ratio is greater than 13/5, when the material passes through feedstock channel and gets into material propulsion portion, be unfavorable for the material bite into and tentatively smash, it can not be fast effectual with the material bite into absolutely and the extrusion of propelling movement downwards to impel the spiral.

In addition, the containing part is in a straight cylinder shape or a conical cylinder shape with a small upper part and a large lower part, and the ratio of the equivalent diameter of the feeding hole to the equivalent diameter of the containing part is 2/3-4/3, so that the feeding hole is large enough to meet the requirement of a user on whole fruit juicing, and simultaneously, the lower port formed at the joint part of the feeding channel and the containing part just corresponds to the propelling spiral of the extrusion screw. When the equivalent diameter of feed inlet is too little, can not fully satisfy the demand that whole fruit was squeezed juice, when the equivalent diameter of feed inlet was too big, the material blocked easily in the portion of holding after the port down, can't get into and impel the spiral and squeeze juice, and the too big whole appearance molding that influences the juice extractor of equivalent diameter of feed inlet moreover.

Simultaneously, when the equivalent diameter ratio of the equivalent diameter of feed inlet and the portion of holding was in this within range, the material fell into down the port fast and cut into and impel the spiral under self gravity and contained angle a's effect, realized that high efficiency is tentatively smashed, and then brought into the clearance that extrusion grinding portion and squeezing the chamber formed fast and smash and extrude the juice by impel the spiral downward rotation will pass through tentatively smashed material, improved the juice extractor go out juice efficiency and go out the juice rate. The equivalent diameter of feed inlet and the equivalent diameter of portion of holding when this ratio within range, not only make the whole appearance molding of juice extractor reach the optimization, and make the material get into the size after axial and horizontal direction are decomposed to extrusion screw's impact force when material propulsion portion through feedstock channel's lower port and reach the optimum, the loss to the upper cover has been reduced, also make the material diminish to extrusion screw's the extrusion force of screw direction, make the motor moment of torsion diminish, motor load has effectively been reduced, not only the feeding is more smooth and easy, and the motor is more stable, and is long-lived.

4. The upper end of extrusion screw is equipped with and holds portion roof complex top face, be equipped with the top rotation axis on the face, the roof center department of holding portion is equipped with and is used for holding the rotation axis hole of last rotation axis, after assembling the extrusion screw, go up the rotation axis insert in the rotation axis hole with rotation axis hole at the footpath clearance fit of footpath, carry out radial spacing to the extrusion screw of pivoted in juice extractor working process, prevent that the extrusion screw from taking place radial swing at the squeezing in-process.

The top end surface of the extrusion screw is matched with the top wall of the containing part, the rotating extrusion screw is axially limited in the working process of the juicer, the extrusion screw generates downward acting force on materials along the spiral direction of the propelling spiral, and the extrusion screw is axially limited by the cooperation of the top end surface and the top wall of the containing part under the action of upward reaction force of the material on the extrusion screw, so that the extrusion screw is prevented from axially moving due to the upward reaction force of the material, an effective crushing gap is formed between the extrusion grinding part and the extrusion cavity to extrude the material to obtain juice, simultaneously avoids the slag blockage phenomenon when squeezed fruit and vegetable slag enters the bottom of the extrusion screw, also avoids the fruit and vegetable slag from jacking the extrusion screw upwards, and then form the protection to the upper cover, avoid stress concentration and damage the upper cover, prolonged the life of juice extractor. In addition, the contact area between the extrusion screw and the top wall of the containing part is reduced due to the arrangement of the top end face, so that the friction force between the extrusion screw and the containing part is effectively reduced, and the abrasion to the extrusion screw and the upper cover in the juicing process is reduced.

5. The upper cover and the squeezing cavity are matched through the buckles and screwed into the clamping grooves, so that the upper cover and the squeezing cavity are stably and reliably connected, and are easy to disassemble, assemble and clean. The lower extreme downwardly extending of upper cover forms annular surrounding edge, the setting up of annular surrounding edge has increased the upper cover and has squeezed the cooperation area in chamber, prevents to squeeze chamber, upper cover and take place radial swing when carrying out the extrusion crushing material with the extrusion screw cooperation, has also reduced rocking of complete machine in the juice extractor working process simultaneously, makes the upper cover more reliable with the connection of squeezing the chamber, and the life of the part of squeezing the juice is longer.

6. Feed channel's last port is equipped with rotatory lid, press the apple, when the great material of cross sectional area size such as orange or tomato, need not to cut the fruit vegetables into pieces, can directly open rotatory lid, put into feed channel with whole vegetables and fruits, then cover rotatory lid and carry out the fruit juice and squeeze, because the inside moving part of juice extractor is separated with the external world to rotatory lid, the user can't stretch into feed channel inside with the finger at the in-process of juice extractor work, thereby avoided the finger to contact the extrusion screw rod of motion, mechanical danger's emergence has been avoided. Therefore, the safety of using the juicer by a user is ensured, and the whole fruit is juiced. Rotatory lid still is equipped with supplementary feed inlet, and the user need not to open rotatory lid when squeezing the less fruit vegetables of cross sectional area size such as celery, cucumber, carrot, can directly put into feedstock channel through supplementary feed inlet with the fruit vegetables and squeeze juice.

In addition, can also realize continuous feeding through setting up rotatory lid, after starting the juice extractor, put great material on rotatory lid, then upset rotatory lid, make it get into through feedstock channel and squeeze in the chamber and squeeze the juice, and less material is then added through the supplementary feed inlet that sets up on rotatory lid, at reinforced in-process, because rotatory lid is in the position of feedstock channel upper port all the time, the upper port has been sheltered from to the part, make consumer's finger can't touch pivoted extrusion screw, thereby realize continuous feeding under the circumstances of guaranteeing safety, squeeze the juice in succession. And the arrangement of the auxiliary feed inlet is very convenient and practical for making mixed fruit juice of materials with different sizes.

Drawings

Fig. 1 is a schematic structural view of a juicer according to a first embodiment of the present invention.

Fig. 2 is a schematic structural view of an extrusion screw in the first embodiment of the juicer of the present invention.

FIG. 3 is a schematic view of another extrusion screw of the juicer according to the present invention.

Fig. 4 is a schematic structural view of a second embodiment of the juicer of the present invention.

Fig. 5 is a perspective view of a second embodiment of the juicer of the present invention.

Fig. 6 is a schematic structural view of a fourth embodiment of the juicer according to the present invention.

Fig. 7 is a schematic structural view of a juicer according to a sixth embodiment of the present invention.

Fig. 8 is an enlarged view of a rotary cap in a sixth embodiment of the juice extractor of the present invention.

The names of the components marked in the figures are as follows:

1. a machine base; 2. an upper cover; 21. a feed inlet; 22. a feed channel; 221. a connecting section; 222. a feeding section; 23. an accommodating portion; 24. a rotation shaft hole; 3. a pressing chamber; 4. extruding the screw; 41. a material propelling part; 411. a body; 412. propelling the screw; 42. an extrusion grinding section; 43. rotating the shaft upwards; 5. a rotating cover; 51. auxiliary feed inlets.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific examples.

The first embodiment is as follows:

as shown in fig. 1 and 2, the invention discloses a vertical screw extrusion juicer with rapid feeding, which comprises a base 1, a motor arranged in the base, an extrusion screw 4, a squeezing cavity 3 matched with the extrusion screw 4 to extrude materials, and an upper cover 2 arranged above the squeezing cavity 3, wherein the squeezing cavity 3 is arranged on the base 1, the extrusion screw 4 is arranged in the squeezing cavity 3, the extrusion screw 4 comprises a material pushing part 41 and an extrusion grinding part 42, the upper cover 2 is provided with an accommodating part 23 which protrudes upwards and is used for accommodating the upper part of the extrusion screw 4, the accommodating space of the materials is enlarged due to the arrangement of the accommodating part 23, the materials enter the accommodating part 23 under the action of gravity after passing through a feeding channel 22, sufficient materials are ensured to be matched with the material pushing part 41 of the extrusion screw in the accommodating part 22 to be crushed, and the accommodating space of the accommodating part 23 is arranged primarily in the gravity direction, the conveying of materials is facilitated, the feeding is more convenient and smooth, and the resistance is small. Because extrusion screw 4 includes material propulsion portion and extrusion grinding portion, will extrude screw 4 partly arrange the holding part 23 of upper cover in, partly arrange in and squeeze chamber 3 for the structure of juice extractor is more reasonable, makes things convenient for extrusion screw 4, upper cover 2 and squeezes the installation, the dismantlement of chamber 3 and wash. The containing part 23 of the squeezing cavity 3 and the upper cover is used for containing the squeezing screw rod 4, so that the depth of the squeezing cavity 3 and the containing part 23 is not too deep, the cleaning dead angle is not easy to generate, and the purpose of easily cleaning the juicer is achieved.

The lateral wall of portion 23 that holds is equipped with the feed inlet and the feedstock channel 22 of being connected with feed inlet 21, the central line of the feedstock channel of feed inlet department is a with the contained angle on vertical plane, and 30 a is no less than 60, when an is less than 30, though can realize quick blanking, the material arrives when the port down with extrusion screw 4's central distance near, extrusion screw 4's rotational speed is less, the moment of torsion of bearing is great, is unfavorable for the bite and the precomminution of material. When a is more than 60 degrees, the feeding channel 22 is too gentle, the friction force between the materials and the feeding channel 22 is large, the materials are not favorable for quick feeding, and the juice squeezing efficiency is reduced. In this embodiment, a =45 °, the material is most easily and quickly passed through the feeding channel 22 and just cut into the propelling screw 412 for pre-crushing, and the crushing effect is good.

The material and the central axis of the extrusion screw 4 form the same included angle, which is equivalent to oblique discharging, so that the material can quickly enter the containing part 23 through the feeding channel 22 by means of the gravity of the material, and can be quickly brought into the juicing gap formed by the extrusion grinding part 42 of the extrusion screw 4 and the squeezing cavity 3 to be squeezed under the downward guide effect of the material pushing part 41 at the corresponding position of the feeding hole 21, and quick automatic feeding is easily realized. Simultaneously, the feedstock channel 22 that the slope set up is elongated for the pipeline of vertical placing, prevents effectively that people's hand from stretching into feedstock channel too deeply for juice extractor's security is higher, and simple structure, and easy machine-shaping.

The material falls into down the port fast and cuts into in advancing spiral 412 under the effect of self gravity and contained angle a, realizes quick efficient preliminary crushing, and then carries out the regrinding and extrudees the juice by advancing spiral 412 downward rotation and will carry out in the clearance that extrudees grinding part 42 and squeeze chamber 3 and form through preliminary kibbling material fast, improves the juice efficiency and the juice rate of going out of juice extractor. Simultaneously, the whole appearance of the juicer is optimized, the impact force on the extrusion screw rod 4 is reduced after the material enters the material pushing part 41 through the lower port of the feeding channel 22 in the axial direction and the horizontal direction, the loss of the upper cover is reduced, the extrusion force of the material on the spiral direction of the extrusion screw rod is reduced, the torque of the motor is reduced, the load of the motor is effectively reduced, the feeding is smoother, the motor is more stable, and the service life is long.

The material propulsion portion 41 is used for guiding the material downwards, the material propulsion portion 41 corresponds the feed inlet setting of the containing portion 23, so that the material relies on self gravity and enters into the containing portion 23 of the upper cover 2 under the action of an included angle between a feeding channel and a vertical surface, and the material propulsion portion 41 of the extrusion screw rod 4 in the containing portion 23 guides the material downwards.

The material propulsion portion 41 further comprises a body 411 and a propulsion screw 412 arranged on the body 411, the body 411 is cylindrical, so that materials are more easily introduced into the material propulsion portion 41 of the extrusion screw rod 4, the pre-crushing and crushing effects of the materials are good, the materials are snapped by the propulsion screw 412 and are under the action of the materials, the materials are quickly brought into a gap formed by the extrusion grinding portion 42 and the squeezing cavity 3 to be squeezed and juiced, the quick automatic feeding is realized, the materials are squeezed out, and the juice outlet efficiency and the juice outlet rate of the juicer are improved. The feed channel 22 is in a straight cylinder shape, so that the equivalent diameter of the cross section of the corresponding feed inlet is maximized, the feed channel can adapt to materials with different sizes, and meanwhile, the materials can enter the accommodating part 23 along the inner wall of the feed channel 22 to be squeezed more easily. In addition, the body 411 of extrusion screw 4 is cylindrical, the portion 23 that holds that corresponds is straight cylindric, make and form certain clearance between extrusion screw 4's material propulsion portion 41 and the portion 23 that holds, extrusion screw can not take place the friction with the portion 23 inner wall at the pivoted in-process, the portion inner wall is equipped with squeezes the rib, it plays the effect of blockking to squeeze preliminary crushing of rib to the material, make the material bring into by pivoted extrusion screw 4 and impel spiral 412 and can not rotate in the portion 23 when preliminary crushing, but the effect of blockking of squeezing the rib is broken along impel spiral 412 down, and then carry out the secondary crushing and squeeze juice by impel spiral 412 downwards rotatory will pass through preliminary crushing material and bring into the clearance that extrudes grinding portion 42 and squeeze chamber 3 formation fast. The ratio of the height of the containing part 23 to the equivalent diameter of the containing part is 4/5-13/5, when the ratio is less than 4/5, the material propelling part 41 is not contained in enough space on the premise of satisfying the appearance structure and the shape of the whole machine, when the ratio is more than 13/5, when the material enters the material propelling part 41 through the feeding channel, the material cannot be bitten into and crushed preliminarily, and the propelling screw cannot rapidly and effectively bite off the material and push and extrude the material downwards. In this embodiment, the ratio of the height of the accommodating part 23 to the equivalent diameter of the accommodating part is 32/23, the height of the accommodating part is 64mm, the equivalent diameter of the accommodating part is 46mm, the material which can accommodate the extrusion screw rod 4 and can be pushed downwards is guaranteed, the juice can be extruded quickly, and the juice outlet efficiency of the juice extractor is improved.

The ratio of the equivalent diameter of the feed inlet to the equivalent diameter of the containing part is 2/3-4/3, the equivalent diameter range of the feed inlet 21 is 40 mm-45 mm, the equivalent diameter range of the containing part 23 is 41-46 mm, when the equivalent diameter of the feed inlet 21 is smaller than 40mm, the feed inlet is too small although the safety requirement is met, fruits and vegetables need to be cut into small blocks to be juiced through the feed channel, the operation of a user is inconvenient, and the juicing efficiency is also reduced. When the equivalent diameter of the feed inlet 21 is larger than 45mm, the large-caliber feeding can be realized only by adding safety protection measures. In this embodiment, the ratio of the equivalent diameter of the feed opening to the equivalent diameter of the containing part is 45/46. The equivalent diameter of feed inlet is 45mm, and is corresponding, the diameter of last port of feedstock channel also is 45mm, the equivalent diameter of portion 23 that holds is 46mm, not only satisfies the ann rule standard requirement like this, can realize quick feeding moreover. When the user uses the juice extractor, due to the limitation of the feeding caliber, the fingers can not touch the rotating extrusion screw rod 4, thereby avoiding the occurrence of mechanical danger and ensuring the safety of the user in using the juice extractor.

The upper end of extrusion screw 4 still is equipped with and holds 23 roof complex top terminal surface, be equipped with on the top terminal surface and rotate the axle 43, the roof center department of holding 23 is equipped with and is used for holding the rotation axis hole 24 of last rotation axis, after assembling extrusion screw 4, go up rotation axis 43 and insert rotation axis hole 24, with rotation axis hole at the radial clearance fit of footpath, carry out radial spacing to pivoted extrusion screw 4 in the juice extractor working process, prevent that extrusion screw 4 from taking place radial swing at the squeezing in-process.

The top end surface of the extrusion screw rod 4 is matched with the top wall of the accommodating part 23, the rotating extrusion screw rod 4 is axially limited in the working process of the juicer, the extrusion screw rod 4 generates downward acting force on materials along the spiral direction of the propelling spiral 412, meanwhile, the extrusion screw 4 is axially limited by the cooperation of the top end surface of the extrusion screw 4 and the top wall of the containing part 23 under the action of the upward reaction force of the material on the extrusion screw 4, so that the extrusion screw is prevented from axially moving due to the upward action force of the material, an effective crushing gap is formed between the extrusion grinding part 42 and the extrusion cavity to extrude the material to obtain juice, meanwhile, the phenomenon that the squeezed fruit and vegetable residues enter the bottom of the extrusion screw 4 to block the residues is avoided, the fruit and vegetable residues are also prevented from jacking the extrusion screw upwards, and then form the protection to the upper cover, avoid stress concentration and damage the upper cover, prolonged the life of juice extractor. In addition, the contact area between the extrusion screw rod 4 and the top wall of the containing part is reduced due to the arrangement of the top end face, so that the friction force between the extrusion screw rod and the containing part is effectively reduced, and the abrasion to the extrusion screw rod and the upper cover in the juicing process is reduced.

The lower end of the upper cover 2 is matched with the upper end of the squeezing cavity 3, a buckle is arranged on the inner side wall of the upper end of the squeezing cavity 3, the lower end of the upper cover 2 extends downwards to form an annular surrounding edge, a clamping groove is formed in the side wall of the annular surrounding edge, and the buckle is screwed into the clamping groove to fix the upper cover 2 on the squeezing cavity. The upper cover 2 and the squeezing cavity 3 are matched through the buckles screwed into the clamping grooves, so that the upper cover 2 and the squeezing cavity 3 are stably and reliably connected, and are easy to disassemble, assemble and clean. The lower extreme downwardly extending of upper cover 2 forms annular surrounding edge, the setting up of annular surrounding edge has increased upper cover 2 and has squeezed the cooperation area in chamber 3, prevents to squeeze chamber, upper cover and takes place radial swing when carrying out the extrusion crushing material with the extrusion screw cooperation, has also reduced rocking of complete machine in the juice extractor working process simultaneously, makes upper cover 2 and the connection of squeezing chamber 3 more reliable, and the life of the part of squeezing the juice is longer.

It is understood that said angle a = 35 °, 40 °, 50 °, 55 °, 60 °.

It is understood that the equivalent diameters of the feed openings are 40mm, 41mm, 42mm, 43mm, 44mm, and the equivalent diameters of the receiving portions are 41mm, 42mm, 43mm, 44mm, 45 mm.

It will be appreciated that the body is in the form of a truncated cone with a small top and a large bottom, as shown in figure 3.

It will be appreciated that the feed channel is a curved or straight or curved oval tube.

It can be understood that an upper rotating shaft is arranged at the center of the top wall of the accommodating part, and a rotating shaft hole for accommodating the upper rotating shaft is arranged at the upper end of the extrusion screw.

Example two:

as shown in fig. 4 and 5, the difference between the present embodiment and the first embodiment is that the equivalent diameter range of the feed opening 21 is 79mm to 84mm, the equivalent diameter range of the accommodating portion 23 is 80mm to 85mm, when the equivalent diameter of the feed opening 21 is smaller than 79mm, the requirement of whole fruit juicing cannot be fully met, when the equivalent diameter of the feed opening 21 is larger than 84mm, the material is easily clamped in the accommodating portion 23 after passing through the lower port, and cannot enter the propelling screw 412 for juicing, and the excessive equivalent diameter of the feed opening 21 affects the overall appearance of the juicer. In this embodiment, the ratio of the equivalent diameter of feed inlet and the equivalent diameter of portion of holding is 81/82, the equivalent diameter of feed inlet 21 is 81mm, and is corresponding, the diameter of the last port of feedstock channel 22 also is 81mm, the equivalent diameter of portion of holding 23 is 82mm, so not only can make the feed inlet be enough big in order to realize the demand that the whole fruit of user was extracted juice, makes the feed inlet that the junction position of feedstock channel 22 and portion of holding 23 formed just correspond the propulsion spiral 412 of extrusion screw 4 simultaneously, and the material is brought into propulsion spiral 412 by pivoted extrusion screw 4 and is carried out preliminary crushing, and the feeding is smooth and easy and crushing extrusion efficiency is high.

Because feed inlet 21 sets up on the lateral wall of the portion 23 that holds of upper cover 2, the size and the position of feed inlet 21 diameter needn't receive extrusion screw 4 and the influence of 2 diameter sizes of upper cover, can easily realize heavy-calibre pan feeding, when adopting the heavy-calibre, because the central line and the vertical plane of the feedstock channel of feed inlet department become contained angle a, the impact force of material to extrusion screw 4 is decomposed into axial and horizontal direction, consequently, the extrusion force of material to the spiral direction of extrusion screw 4 diminishes, make the motor moment of torsion diminish, effectively reduced the motor load, not only the feeding is more smooth and easy, and the motor is stable, and is long in service life.

The feed channel 22 is in a straight cylinder shape, so that the cross section of a corresponding feed inlet is maximized, the feed channel can adapt to materials of different sizes, large-caliber feeding is realized, and meanwhile, the materials can enter the accommodating part 23 along the inner wall of the feed channel 22 more easily for squeezing. In addition, the body 411 of the extrusion screw 4 is cylindrical, the corresponding accommodating part 23 is in a straight cylinder shape, a certain gap is formed between the material pushing part 41 of the extrusion screw 4 and the accommodating part 23, the extrusion screw does not rub against the inner wall of the accommodating part 23 in the rotating process, pressing ribs are arranged on the inner wall of the accommodating part, the pressing ribs have a blocking effect on the primary crushing of the material, so that the material is not rotated in the accommodating part 23 when the material is brought into the pushing screw 412 by the rotating extrusion screw 4 for primary crushing, but is snapped off along the pushing screw 412 under the blocking effect of the pressing ribs, and then the pushing screw 412 rotates downwards to quickly bring the primarily crushed material into the gap formed by the extrusion grinding part 42 and the pressing cavity 3 for secondary crushing and juice squeezing, the ratio of the height of the accommodating part 23 to the equivalent diameter of the accommodating part is 4/5 to 13/5, when the ratio is less than 4/5, do not have sufficient space to hold material propulsion portion 41 under the prerequisite that satisfies complete machine appearance structure and molding, when the ratio is greater than 13/5, when the material passes through feedstock channel and gets into material propulsion portion 41, be unfavorable for the bite of material and preliminary crushing, impel the spiral and can not be fast effectual with the material bite break and push down the extrusion. In this embodiment, the ratio of the height of the containing part 23 to the equivalent diameter of the containing part is 113/81, the height of the containing part is 113mm, the equivalent diameter of the containing part is 81mm, the material that can contain the extrusion screw 4 and propel downwards is guaranteed, the juice can be extruded fast, and the juice outlet efficiency of the juice extractor is improved.

The feed channel includes port and lower port, and the lower port is connected with the feed inlet of portion of holding, it is equipped with rotatory lid 5 to go up the port, rotatory lid articulates in port one side, rotatory lid is equipped with supplementary feed inlet 51, supplementary feed inlet 51 department is equipped with and keeps off the muscle, keep off in the muscle downwardly extending stretches into feed channel 22, when the port was opened to the rotatory lid, it shelters from to keep off the muscle go up the port. When squeezing the apple, when the great material of cross-sectional area size such as orange or tomato, need not to cut fruit vegetables into pieces, can directly open rotatory lid 5, because the fender muscle part shelters from the upper port, can put whole vegetables and fruits on keeping off the muscle, then cover rotatory lid 5, the fruit vegetables are automatic to fall into feedstock channel 22 and carry out the fruit juice and squeeze, because rotatory lid 5 and keep off the muscle and separate the inside moving part of juice extractor with the external world, inside the user can't stretch into feedstock channel with the finger at the in-process of juice extractor work, thereby avoided the finger to contact the extrusion screw rod of motion, mechanical danger's emergence has been avoided. Therefore, the safety of using the juicer by a user is ensured, and the whole fruit is juiced.

Rotatory lid 5 is equipped with supplementary feed inlet 51, and the user need not to open rotatory lid 5 when squeezing the less fruit vegetables of cross-sectional area size such as celery, cucumber, carrot, can directly put into feed channel with the fruit vegetables through supplementary feed inlet 51 and squeeze juice, and the diameter size phi of supplementary feed inlet is less than or equal to 45mm, accords with national safety standard requirement, and the finger of user can't touch the extrusion screw rod of motion through supplementary feed inlet, can enough realize squeezing the demand of fruit vegetables juice, has guaranteed the safety that the user used the juice extractor again.

Can also realize feeding in raw material at any time through setting up rotatory lid 5, start the juice extractor after, put great material at rotatory lid, then upset rotatory lid 5, make it squeeze juice in squeezing chamber 3 through feedstock channel 22 entering, and less material then adds through setting up supplementary feed inlet 51 on rotatory lid 5, at reinforced in-process, because rotatory lid 5 is in the position of port on feedstock channel 22 all the time, the partial upper port that has sheltered from, make consumer's finger can't touch pivoted extrusion screw, thereby realize continuous feeding under the circumstances of guaranteeing safety, squeeze juice in succession. The auxiliary feed inlet 22 is also very convenient and practical for making mixed juice of materials with different sizes.

It is understood that the equivalent diameters of the feed openings are 80mm, 81mm, 82mm, 83mm, 84mm, and the equivalent diameters of the receiving portions are 81mm, 82mm, 83mm, 84mm, 85 mm.

Example three:

as shown in fig. 6, the present embodiment is different from the second embodiment in that the feeding channel 22 includes a connecting section 221 and a feeding section 222, and the connecting section 221 and the feeding section 222 are both in a straight cylindrical shape. The included angle between the central line of the connecting section 221 and the vertical plane is a, a is more than or equal to 30 degrees and less than or equal to 60 degrees, one end of the connecting section 221 is connected with the feed inlet 21, and the other end of the connecting section 221 is smoothly connected with the feed section 222. The feeding section 222 is vertically arranged, an upper port of the feeding section is used for feeding materials, and the other end of the feeding section is smoothly connected with the connecting section 221.

The feeding section 222 is vertically arranged, so that the upper port of the feeding section 222 is in a horizontal position, feeding is performed in the vertical direction, operation habits of users can be better adapted, and blanking is rapid and smooth. The feeding section 222 is smoothly connected with the connecting section 221, so that when a user puts in materials, the materials smoothly enter the connecting section after passing through the vertical feeding section, the materials are not easy to block, and the smooth connection of the feeding section 222 and the connecting section 221 enables the appearance of the juicer to be more attractive. The material smoothly passes through the feed inlet 21 along the linkage segment of feedstock channel 22 and gets into material propulsion portion to being carried into the extrusion grinding portion fast downwards by the propulsion spiral and squeezing the juice in the clearance that the chamber formed, improved the efficiency of squeezing the juice.

The included angle between the central line of the connecting section 221 and the vertical plane is a, a is more than or equal to 30 degrees and less than or equal to 60 degrees, when a is less than 30 degrees, although rapid blanking can be realized, the distance between the material and the center of the extrusion screw rod 4 is short when the material reaches the lower port, the rotating speed of the extrusion screw rod 4 is small, the borne torque is large, and the material is not beneficial to biting and pre-crushing. When a is more than 60 degrees, the connecting section 221 of the feeding channel 22 is over gentle, the friction force of the inner wall of the material connecting section is large, materials are easily clamped at the joint of the feeding section 222 and the connecting section 221, rapid feeding is not facilitated, and the juice squeezing efficiency is reduced. In this embodiment, a =45 °, at this time, the material most easily passes through the connecting section and just cuts into the propelling screw 412 for pre-crushing, and the crushing effect is good.

The upper port of the feeding channel 22 is movably provided with a rotatable rotary cover 5, the rotary center of the rotary cover 5 traverses the upper port, and the rotary cover 5 is used for placing materials and can rotate around the rotary center in any direction so as to enable the materials to enter the feeding channel. The rotating center of the rotating cover 5 passes through the center of the upper port, so that the rotating range of the rotating cover 5 is small, the space of the upper port is effectively saved, the upper port can contain materials to the maximum extent, namely, the size of the caliber of the upper port can be increased, the space of the upper port can be effectively utilized, and the space is not wasted; meanwhile, the problem that the attractiveness of the whole machine is affected by enlarging the upper port to enlarge the feeding channel 22 due to the fact that the upper port is enlarged for larger materials is avoided.

The rotating cover 5 is also provided with a material containing cavity which is bowl-shaped. When the opening of the material containing cavity is upward, the material is positioned at the upper port, and when the opening of the material containing cavity is downward, the material falls into the feeding channel 22. The advantage that sets up like this lies in, when the material is circular or similar circular, the placing of the material of being convenient for, and the material can not be followed and is covered the landing from the rotation, and has increased the space of placing of material, can hold bigger material.

5 bottoms of rotatory lid are equipped with supplementary feed inlet, the equivalent internal diameter of supplementary feed inlet is less than or equal to 45mm, supplementary feed inlet is circular. The arrangement has the advantages that when long-strip-shaped fruits and vegetables such as carrots, celery and the like need to be thrown in, the fruits and vegetables can be thrown in from the auxiliary feeding hole, operation of a user is facilitated, and use feeling of the user is improved; the hand of the user can not extend into the feeding channel 22 from the auxiliary feeding hole, so that the purpose of safe operation is achieved, the auxiliary feeding hole is made to be the largest, and the feeding is convenient for the user.

Example four:

this example differs from the first example in that the feed channel comprises a connecting section and a feed section, both of which are straight cylindrical. The included angle between the central line of the connecting section and the vertical plane is a, a is more than or equal to 30 degrees and less than or equal to 60 degrees, one end of the connecting section is connected with the feeding hole, and the other end of the connecting section is smoothly connected with the feeding section. The feeding section is vertically arranged, an upper port of the feeding section is used for feeding materials, and the other end of the feeding section is smoothly connected with the connecting section.

The feeding section is vertically arranged, so that the upper port of the feeding section is in a horizontal position, the feeding is carried out in the vertical direction, the operation habit of a user can be adapted, and the blanking is rapid and smooth. The feeding section is smoothly connected with the connecting section, so that when a user puts in materials, the materials smoothly enter the connecting section after passing through the vertical feeding section, the materials are not easy to block, and the feeding section is smoothly connected with the connecting section to enable the appearance of the juicer to be more attractive. The material gets into material propulsion portion along feedstock channel's linkage segment smoothly through the feed inlet to being carried into the extrusion grinding portion fast downwards by the propulsion spiral and squeezing the juice in the clearance that the chamber formed, improved the efficiency of squeezing the juice.

The included angle between the central line of the connecting section and the vertical plane is a, a is more than or equal to 30 degrees and less than or equal to 60 degrees, when a is less than 30 degrees, although rapid blanking can be realized, the distance between the material and the center of the extrusion screw is short when the material reaches the lower port, the rotating speed of the extrusion screw is small, the borne torque is large, and the material cannot be bitten or pre-crushed easily. When a is greater than 60, feedstock channel's linkage segment is too gentle, and the frictional force of material linkage segment inner wall is great, and the material blocks easily in the junction of feed section and linkage segment, is unfavorable for quick feeding, has reduced the efficiency of squeezing the juice. In the embodiment, a =45 degrees, at the moment, the materials can most easily and quickly pass through the connecting section and just cut into the propelling screw to be pre-crushed, and the crushing effect is good.

The equivalent diameter scope of feed inlet is 40mm ~ 45mm, the portion of holding is straight cylindric, the equivalent diameter scope of the portion of holding is 41~46mm, and when the equivalent diameter of feed inlet was less than 40mm, although satisfying the safety regulation requirement but the feed inlet undersize, need cut into very little cubic with the fruit vegetables and just can squeeze juice through feedstock channel, inconvenient user operation has also reduced the efficiency of squeezing juice. When the equivalent diameter of the feeding hole is larger than 45mm, the large-caliber feeding can be realized only by adding safety protection measures. In this embodiment, the equivalent diameter of feed inlet is 45mm, and is corresponding, the diameter of last port of feedstock channel also is 45mm, the equivalent diameter of holding portion is 46mm, so not only satisfy the requirement of safety standard, can realize quick feeding moreover. When the user uses the juice extractor, due to the limitation of the feeding caliber, the fingers can not touch the rotating extrusion screw, thereby avoiding the occurrence of mechanical danger and ensuring the safety of the user in using the juice extractor.

It will be appreciated that the receiving portion is in the form of a tapered cylinder having a small top and a large bottom.

Example five:

the difference between the present embodiment and the second embodiment is that the accommodating part is in a tapered cylinder shape with a small top and a large bottom, so that a certain gap is formed between the material pushing part of the extrusion screw and the accommodating part, and the extrusion screw does not rub against the inner wall of the accommodating part in the rotating process. Simultaneously, the portion of holding is big end down's awl cylindric, make the material have sufficient accommodation space, and accommodation space sets up in the direction of gravity, more be favorable to holding and the unloading of material, after the material gets into material propulsion portion, the portion of holding inner wall is equipped with presses the rib, it plays the effect of blockking to squeeze preliminary crushing of rib to the material, make the material bring into by pivoted extrusion screw and impel the spiral and can not beat in the portion of holding when tentatively smashing, but the effect of blockking of squeezing the rib is down followed and impeld the spiral and is bitten absolutely, and then will bring into the extrusion grinding portion fast through preliminary kibbling material by impel the spiral downward rotation and squeeze the juice in the clearance that the chamber formed with squeezing.

Example six:

as shown in fig. 7 and 8, the present embodiment is different from the second embodiment in that a rotatable rotary cover 5 is movably disposed at an upper port of the feeding passage 22, a rotation center of the rotary cover 5 traverses the upper port, and the rotary cover 5 is used for placing the material and can rotate around the rotation center in either direction to enable the material to enter the feeding passage 22. The rotating center of the rotating cover 5 passes through the center of the upper port, so that the rotating range of the rotating cover 5 is small, the space of the upper port is effectively saved, the upper port can contain materials to the maximum extent, namely, the size of the caliber of the upper port can be increased, the space of the upper port can be effectively utilized, and the space is not wasted; meanwhile, the problem that the attractiveness of the whole machine is affected by enlarging the upper port to enlarge the feeding channel 22 due to the fact that the upper port is enlarged for larger materials is avoided.

The rotating cover 5 is also provided with a rotating shaft, the side wall of the feeding channel 22 is provided with a rotating hole, and the rotating cover is hinged to the side wall of the feeding channel 22 through the matching of the rotating shaft and the rotating hole; or, the rotating cover 5 is provided with a rotating hole, the side wall of the feeding channel 22 is provided with a rotating shaft, and the rotating cover 5 is hinged to the side wall of the feeding channel through the matching of the rotating hole and the rotating shaft.

When materials with larger cross section sizes, such as apples, oranges or tomatoes, are squeezed, the fruits and vegetables are not required to be cut into pieces, the materials are directly placed in the material containing cavity of the rotary cover 5, and at the moment, the upper port is shielded by the rotary cover 5, so that the hands of people can not extend into the feeding channel 22; then, the rotating cover 5 is rotated along the rotating shaft, the materials fall into the feeding channel, in the rotating process, the rotating cover 5 always shields the upper port, the situation that hands of people cannot stretch into the feeding channel is guaranteed, then the rotating cover is rotated to the original position to place the materials, then the rotating cover 5 is rotated to enable the materials to enter the feeding channel, and the steps are repeated, so that continuous juice squeezing can be achieved, the safety in use is guaranteed, and users are prevented from being accidentally injured; meanwhile, the user does not need to pretreat the fruits and vegetables, so that the whole fruits are continuously juiced, the use by the user is facilitated, and the convenience of the user is improved; in addition, the machine does not need to be started and stopped frequently, so that the loss of the machine is reduced, and the service life of the machine is prolonged.

The holding portion 23 is straight cylindric, make and form certain clearance between extrusion screw's material propulsion portion and the holding portion 23, extrusion screw can not take place the friction with holding portion 23 inner wall at the pivoted in-process, the holding portion inner wall is equipped with presses the rib, it plays the effect of blockking to squeeze the preliminary crushing of rib to the material, make the material bring into by pivoted extrusion screw and impel spiral 412 and can not spin in holding portion 23 when preliminary crushing, but the effect of blockking of squeezing the rib is down along impelling spiral 412 and is bitten into absolutely, and then carry out secondary crushing and extrusion juice in will carrying into the clearance that extrudees grinding portion and squeeze the chamber formation fast by impelling spiral 412 downward rotation through preliminary crushing material.

Example seven:

the difference between this embodiment and the second embodiment is that the rotating cover includes a first cover body and a second cover body, and when the upper port is opened by the first cover body, the upper port is shielded by the second cover body, and at this time, the first cover body is located at a vertical position above the upper port, and an included angle between the second cover body and the first cover body is 90 degrees, and the second cover body horizontally covers the upper port. The first lid is equipped with the rotation axis with the crossing department of second lid, rotatory hole is established to the feedstock channel lateral wall, rotatory lid articulates in feedstock channel's lateral wall through the cooperation of rotatory hole and rotation axis. When the materials with large cross-sectional area sizes such as apples, oranges or tomatoes are squeezed, the fruits and vegetables do not need to be cut into pieces, the first cover body can be directly opened, at the moment, the second cover body covers the upper port, the whole fruits and vegetables can be placed on the second cover body, then the first cover body is turned over, the first cover body is covered on the upper port, the second cover body is located at the vertical position in the feeding channel, and the fruits and vegetables automatically fall into the feeding channel under the action of gravity to squeeze juice. The user is at the in-process that the input material squeezed the juice, and first lid and second lid shelter from in turn all the time go up the port for inside moving part of juice extractor is separated with the external world with first lid and second lid, and inside the user can't stretch into feedstock channel with the finger at the in-process of juice extractor work, thereby avoided the finger to contact the extrusion screw rod of motion, avoided mechanical danger's emergence. Therefore, the safety of using the juicer by a user is ensured, and the whole fruit is juiced.

The containing part is straight cylindric, make and form certain clearance between extrusion screw's material propulsion portion and the containing part, extrusion screw can not take place the friction with the containing part inner wall at the pivoted in-process, the containing part inner wall is equipped with presses the rib, it plays the effect of blockking to the preliminary crushing of material to squeeze the rib, make the material bring into by pivoted extrusion screw and impel the spiral and can not spin in the containing part when tentatively smashing, but the effect of blockking at the rib of squeezing is followed and impeld the spiral and is bitten disconnected down, and then will carry out the regrinding and extrude the juice in the clearance that grinding portion and squeeze the chamber formed with the material of tentatively smashing fast through impel the spiral downward rotation.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, i.e. all equivalent variations and modifications made by the present invention are covered by the scope of the claims of the present invention, which is not limited by the examples herein.

Claims

1. A vertical screw extrusion juice extractor comprises a base, a motor arranged in the base, an extrusion screw, a squeezing cavity matched with the extrusion screw to extrude materials, and an upper cover arranged above the squeezing cavity, wherein the squeezing cavity is arranged on the base, the extrusion screw is arranged in the squeezing cavity, the extrusion screw comprises a material propelling part and an extrusion grinding part, the material propelling part comprises a body and a propelling spiral arranged on the body, the vertical screw extrusion juice extractor is characterized in that the upper cover is provided with a containing part which protrudes upwards and is used for containing the upper part of the extrusion screw, the squeezing cavity and the upper cover containing part jointly contain the extrusion screw, the side wall of the containing part is provided with a feed inlet and a feed channel communicated with the feed inlet, the material propelling part is arranged corresponding to the feed inlet of the containing part, the containing part is matched with the extrusion screw material propelling part to perform preliminary crushing, the feed channel comprises a connecting section and a feed section, one, the other end is smoothly connected with a feeding section, and the ratio of the equivalent diameter of the feeding opening to the equivalent diameter of the containing part is 2/3-4/3.

2. The juice extractor of claim 1, wherein the angle between the center line of the connecting section and a vertical plane is a, and is greater than or equal to 30 degrees and less than or equal to 60 degrees.

3. The juice extractor of claim 2, wherein a is 30 ° ≦ 45 °.

4. The juicer of claim 1 wherein the feed section is in the shape of a straight cylinder.

5. The juicer of claim 1 wherein the feed section is vertically disposed and the upper port of the feed section is in a horizontal position.

6. The juicer of claim 1, wherein a gap is formed between the material pushing part and the containing part, the material is carried into the pushing screw by the rotating extrusion screw to be primarily crushed, and a crushing gap is formed between the extrusion grinding part and the pressing cavity to crush and squeeze the material.

7. The juicer of claim 1 wherein the body is cylindrical or frustoconical with a small top and a large bottom.

8. The juicer of claim 1 wherein the receptacle is in the form of a straight cylinder or a tapered cylinder having a small top and a large bottom.

9. The juicer of claim 1 wherein the upper end of the extrusion screw is further provided with a top surface that engages the top wall of the receptacle, the top surface of the extrusion screw engaging the top wall of the receptacle to axially limit the rotation of the extrusion screw.

10. The juice extractor of claim 9, wherein the top end surface is provided with an upper rotary shaft, a rotary shaft hole for receiving the upper rotary shaft is provided at a center of a top wall of the receiving portion, and the upper rotary shaft is inserted into the rotary shaft hole to be in clearance fit with the rotary shaft hole in a radial direction.