CN210169689U

CN210169689U - Little juice extractor vibrates

Info

Publication number: CN210169689U
Application number: CN201920602847.5U
Authority: CN
Inventors: 王旭宁; 刘咸; 赵国锋; 张玉印
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-03-24
Anticipated expiration: 2029-04-28

Abstract

The utility model discloses a little juice extractor vibrates, including frame, the juice collecting cavity of being connected with the frame, vertically set up the screw rod at juice collecting cavity, the screw rod is from last to including broken section, grinding section down, the screw rod includes the screw rod body and screw rod axle, is equipped with on the surface of the screw rod body by broken section upper end extend to the main spiral that grinds the section lower extreme, by broken section on with grind section junction extend to the grinding spiral that grinds the section lower extreme, still be equipped with from broken section downwardly extending's supplementary spiral on the screw rod body surface, the central angle that corresponds between the initiating terminal of supplementary spiral and the initiating terminal of main spiral is α to 160 does not more than α is not more than 200.

Description

Little juice extractor vibrates

Technical Field

The utility model belongs to the technical field of food preparation machine, especially, relate to a little juice extractor vibrates.

Background

Along with the improvement of living standard, various juicers continuously emerge, become the new pet of health preserving personage. The existing vertical juicer generally comprises a base, a juice collecting cavity, a screw rod, an extruding cylinder and an upper cover, wherein the base is internally provided with a motor, the juice collecting cavity is connected with the base, the screw rod is longitudinally arranged in the juice collecting cavity, the extruding cylinder is arranged between the screw rod and the juice collecting cavity, the upper cover is arranged at an opening at the upper part of the juice collecting cavity, a juice outlet gap is arranged on the extruding cylinder, the screw rod comprises a screw rod body and a screw rod shaft, a spiral is arranged on the surface of the screw rod body, the upper part of the screw rod is a crushing section with a higher spiral height, and therefore a larger accommodating gap; the lower part of the screw is a grinding section with a lower spiral height, so that a smaller accommodating gap is formed between the screw and the juice collecting cavity. When needing to press juice, cut into the cubic with the fruit, the vegetables of needs pressing juice earlier, then put into the recipient with cubic material in, the starter motor to drive the screw rod and rotate, the higher spiral of broken section can be sheared cubic fruit vegetables material into less fragment gradually and get into in the great clearance that holds in upper portion. Under the axial propelling movement effect of the material pushing surface on the lower side of the spiral, the material gradually moves downwards to the grinding section with a smaller accommodating gap, the fruit and vegetable materials at the moment are extruded to form fruit and vegetable juice and corresponding residues, the fruit and vegetable juice flows outwards from a juice outlet at the lower part of the juice collecting cavity after being filtered by a juice outlet gap of the extruding cylinder, and the residues are discharged outwards from a residue outlet at the lower part of the juice collecting cavity.

It will be appreciated that a magazine area without a spiral is formed between the top surface of the screw body and the start of the second turn of the uppermost part of the spiral. Therefore, when the screw rod rotates, the first circle of screw cuts the material and pushes the material downwards, at the moment, the material forms a radial reaction component force on the screw rod, and the material in the material storage area at the other side of the screw rod does not form a radial reaction component force on the screw rod, namely, the upper part of the screw rod is unbalanced in stress, so that the screw rod shakes, vibration is caused, the noise in working is increased, and the service life is not prolonged.

Furthermore, in order to facilitate access to the passage between the two spirals for shear crushing of the material, the spiral of the crushing section usually has a larger pitch and, therefore, the material sheared by the upper spiral has a larger dimension in the axial direction. Thus, when the screw pushes and extrudes a material downwards, the screw can be subjected to larger resistance, which not only causes difficulty in subsequent grinding of the material, but also can obviously increase the load of the screw at the upper part of the screw, thereby shortening the service life of the screw.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a little juice extractor vibrates, can balance the atress on screw rod upper portion effectively, avoid the screw rod because of rocking the production vibrations, be favorable to reducing the load of screw rod, improve the life of screw rod.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a little juice extractor of vibration, includes the frame, the juice collecting cavity of being connected with the frame, vertically sets up the screw rod at the juice collecting cavity, the screw rod is from last to including crushing section, grinding section down, the screw rod includes the screw rod body and screw rod axle, is equipped with on the surface of the screw rod body by the main spiral that the crushing section upper end extends to grinding section lower extreme, by the crushing section on with grinding section junction extend to the grinding spiral that grinds section lower extreme, still be equipped with the supplementary spiral that extends downwards from the crushing section on the screw rod body surface, the central angle that corresponds between the initiating terminal of supplementary spiral and the initiating terminal of main spiral is α to 160 is no less than α and is no less than 200.

First, the utility model discloses set up one by the main spiral that extends to grinding section lower extreme on the broken section, consequently, main spiral is located broken section part helical height higher on the screw body surface to cut broken material fully, and main spiral is located the helical height who grinds the section part lower, thereby extrudees and grinds the material fully, in order to squeeze out the juice. Furthermore, the utility model discloses increase on grinding the section and set up grinding helix, on the one hand can reduce the distance of grinding the section in the axial between two circles of spirals to be favorable to carrying out abundant extrusion and grinding to the material, and carry out the secondary crushing to the material of great piece, thereby improve the efficiency of squeezing the juice. On the other hand, the load of a single spiral of the grinding section can be reduced, and the service life is further prolonged.

Particularly, the utility model discloses still be equipped with the auxiliary screw who extends downwards from the crushing section at the screw body surface to the central angle α that corresponds between the initiating terminal of auxiliary screw and the initiating terminal of main screw is controlled between 160 to 200, like this, the screw body of crushing section has main screw and the auxiliary screw of roughly evenly distributed in circumference, on the one hand, can form two spirals that are used for cuting the breakage in circumference of screw body, make the upper end atress of the screw body even, avoid its during operation because of rocking the screw rod vibrations that lead to, on the other hand, the auxiliary screw can fill effectively the storage area that does not have the spiral that forms between the initiating terminal of the top surface of the screw body to the uppermost second circle of main screw, thereby can cut the material, break into littleer block form, and then be favorable to the material at the extrusion grinding and the juice of grinding section, reduce the load of grinding section screw rod in the while staying, be favorable to prolonging the life of screw rod.

Preferably, at least two of said grinding spirals are provided on the surface of the screw body, so that a spiral grinding channel is formed between adjacent grinding spirals, the lower end of said auxiliary spiral being located at the inlet of the upper part of the grinding channel.

It is known that when the main screw extends to the grinding section of the screw, the main screw becomes a grinding screw, and the present invention provides at least two grinding screws located in the grinding section on the screw body, thereby significantly reducing the distance between two turns of the screw in the axial direction of the grinding section. That is, the inlet width of the grinding channel may be reduced to facilitate secondary crushing of the material for sufficient crushing, grinding and juicing of the material within the grinding channel. It can be understood that the material is the effect that pushes away the charge level at the spiral during juicing is the downstream, consequently, the utility model discloses an auxiliary spiral lower extreme extends to the entrance that grinds passageway upper portion, like this, can ensure to be cut broken material by auxiliary spiral and get into smoothly and grind the passageway in, avoids appearing the material in the reverse motion that makes progress of auxiliary spiral's lower extreme department, is favorable to improving the efficiency of squeezing the juice.

Preferably, a lower end of the auxiliary screw partially overlaps in a circumferential direction with a starting end of the grinding screw on a front side in a forward rotation direction of the screw.

When the screw rotates in the forward direction for juicing, the front side surface of the screw in the forward rotation direction is a material pushing side surface for pushing materials downwards, and the rear side surface is a material facing side surface facing the materials falling from the top. And the grinding helix at the front side of the lower end of the auxiliary helix and the grinding helix at the rear side can form a spiral grinding channel. The utility model discloses make the lower extreme of auxiliary screw and the initiating terminal that is close to the grinding screw that auxiliary screw pushed away the material side overlap on circumference, therefore, when the screw rod forward rotates and squeezes juice, the broken fritter material of shearing by auxiliary screw can push away the material side along auxiliary screw and move down to auxiliary screw's lower extreme gradually, the material receives the overlap joint with the grinding screw initiating terminal that auxiliary screw overlaps this moment, bear, thereby ensure that the material gets into smoothly around by the auxiliary screw lower extreme in two grinding screw formed's the grinding passageway, avoid the material to fall to next grinding passageway in the lower extreme of auxiliary screw and the grinding screw handing-over department of front side because of producing the vacancy, ensure that the material forms abundant extrusion grinding, be favorable to improving the juice rate.

Preferably, the screw body of the crushing section has a radial dimension which increases from top to bottom, so that a filling zone is formed in the surface of the screw body.

Firstly, through setting up supplementary spiral and filling area, can balance the focus of the screw rod body effectively, make the focus of screw rod can be located the axis of screw rod as far as possible to ensure the stability of screw rod when placing, avoid appearing empting the phenomenon. Secondly, the setting up of filling the district can make the screw rod of broken section and the clearance that holds between the recipient reduce from last to down gradually to carry out preliminary extrusion to the material when shearing the breakage to the material, be favorable to improving juice rate. Particularly, the filling area can form a radial extrusion effect on the materials, so that the spiral load of the screw can be reduced on the premise of ensuring the juice yield, and the service life of the screw can be prolonged.

Preferably, the filling region extends from the start of the auxiliary helix to the termination of the auxiliary helix.

The auxiliary screw arranged opposite to the crushing section of the main screw in the axial direction mainly plays a role in shearing and crushing. Thus, when the filling area is arranged to extend from the initial end of the auxiliary screw to the terminal end of the auxiliary screw, the main screw and the auxiliary screw of the crushing section can be ensured to shear the crushed material and simultaneously form a primary extrusion on the material, and the screw body of the crushing section and the screw body of the grinding section can be ensured to form a smooth transition connection.

Preferably, the auxiliary screw comprises a material facing side and a material pushing side, the distance from the surface of the screw body on the material facing side of the auxiliary screw to the top surface of the main screw is L1, the distance from the surface of the screw body on the material pushing side of the auxiliary screw to the top surface of the main screw is L2, and in the same position in the circumferential direction, the ratio of L2/L1 is 0.2-0.5.

We can push up the ratio between the distance L2, the L1 of the screw body surface of material side and the side of meeting to main spiral's top surface through setting up the supplementary spiral rationally to both be favorable to balanced screw rod's focus, be favorable to again carrying out preliminary extrusion to the material of broken section, with the load that reduces main spiral, the supplementary spiral of broken section. When L2/L1 is less than 0.2, the material is excessively extruded by the screw body of the crushing section, so that the load of the motor for driving the screw to rotate is increased, the vibration of the screw is caused, a larger radial extrusion acting force is formed on the extrusion container, and the extrusion container is easily damaged; when L2/L1 is more than 0.5, the extrusion effect of the screw body on the materials is not obvious, so that the juice yield is reduced, and the main screw and the auxiliary screw of the crushing section are subjected to larger axial load, so that the screw is easy to crack at the root.

Preferably, 15mm L1 is 30 mm.

The distance L1 that meets the screw body surface of material side to the top surface of main spiral with supplementary spiral sets up between 15mm to 30mm, has both been favorable to providing sufficient space that holds for the material of broken section to be favorable to the material of great piece directly to throw into in the recipient to press juice, thereby operation when conveniently pressing juice can ensure the intensity of main spiral again, avoids leading to the fracture because of the load is too big at the root of main spiral. When L1 is less than 15mm, the accommodating gap of the crushing section is too small, so that when a larger material is directly fed into the extrusion barrel, the material is completely sheared and crushed into small pieces, the material stays at the upper part of the screw rod and cannot move downwards to extrude and squeeze juice, and the juice squeezing efficiency is further reduced; when L1 is greater than 30mm, the load on the main screw becomes excessive, and the main screw is liable to crack at the root.

Preferably, the distance between the starting end of the auxiliary spiral and the upper end face of the screw body is A, and A is more than or equal to 0mm and less than or equal to 15 mm.

We know that the screw rod of broken section has the biggest space that holds in one side that the initiating terminal of main spiral carried on the back mutually, the utility model discloses with the initiating terminal of supplementary spiral and the distance A control between the screw rod body up end between 0 to 15mm, be favorable to guaranteeing that the screw rod of broken section has sufficient space that holds to avoid cutting into the fritter fast and move down because of the too big result in of material appearance. It will be appreciated that the auxiliary screw and the main screw have a drop in height from each other, since the start of the main screw is flush with the upper end surface of the screw body. Like this, get into the material that overall dimension is different in the recipient, can cut the breakage by main spiral and supplementary spiral respectively, and then be favorable to improving broken efficiency.

Preferably, the radial height of the top surface of the auxiliary spiral is gradually increased from the starting end to the terminating end at least partially, so that the axial projection of the top surface of the auxiliary spiral is an Archimedes spiral line.

As mentioned above, the screw of the crushing section mainly has the effects of shearing, crushing and primary juice extraction on the materials. And the utility model discloses an auxiliary screw adopts the spiral line of Archimedes end, that is to say, has great distance and space between the initiating terminal of auxiliary screw and the recipient inner wall. Like this, when the material of great piece is thrown into in the recipient, the material can conveniently fall into in the space between supplementary spiral and the recipient under ground to by supplementary spiral or main spiral shear breakage, avoid the material to meet the material side idle running of supplementary spiral initiating terminal effectively. The height of the auxiliary screw which is gradually increased can ensure that the material is effectively sheared and crushed, and is beneficial to the stress balance of the main screw and the auxiliary screw.

Preferably, the radial distance between the auxiliary spiral top surface and the main spiral top surface at the corresponding position is B, and B is more than or equal to 0mm and less than or equal to 25 mm.

The radial distance B between the auxiliary spiral top surface and the main spiral top surface at the corresponding position is controlled to be 0-25 mm, so that not only is the formation of a sufficient accommodating gap for accommodating materials facilitated, but also the load and stress balance of the main spiral and the auxiliary spiral of the screw rod can be ensured, and the screw rod is prevented from shaking during working. When B is less than 0, the height of the auxiliary screw is larger than that of the main screw, so that frictional interference between the auxiliary screw and the extrusion container is easily caused, or a gap between the main screw and the extrusion container is too large, and an object cannot be effectively sheared and crushed; when B is more than 25mm, the height of the auxiliary screw is too low, so that the shearing and crushing efficiency of materials is reduced, and the stress of the main screw and the auxiliary screw is difficult to effectively balance.

Therefore, the utility model discloses following beneficial effect has: the stress on the upper part of the screw can be effectively balanced, the screw is prevented from shaking due to shaking, the load of the screw is favorably reduced, and the service life of the screw is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an axial sectional view of the screw.

Fig. 3 is a plan view of the screw.

Fig. 4 is a partial side view of the screw.

In the figure: 1. the juice extractor comprises a base 11, an upper cover 12, a motor 121, a transmission mechanism 2, a juice collecting cavity 3, a screw 31, a crushing section 32, a grinding section 33, a screw body 331, a filling area 34, a screw shaft 35, a main screw 36, a grinding screw 37, an auxiliary screw 38, a grinding channel 4 and an extrusion barrel.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

As shown in figure 1, the juicer with small vibration comprises a base 1, a juice collecting cavity 2, a screw rod 3 and a squeezing barrel 4, wherein a motor 12 is arranged in the base, the juice collecting cavity 2 is connected to the base, the screw rod 3 is longitudinally arranged in the juice collecting cavity, the squeezing barrel 4 is arranged between the juice collecting cavity and the screw rod, a juice outlet gap is formed in the squeezing barrel, and the screw rod comprises a crushing section 31 and a grinding section 32, wherein the upper portion of the crushing section 31 is used for shearing crushed materials, and the lower portion of the grinding section 32. Specifically, the screw includes a screw body 33, the surface of which is provided with a helix, and an internal metal screw shaft 34. As shown in fig. 2, the helix comprises a main helix 35 extending from the upper end of the crushing section to the lower end of the grinding section, and a grinding helix 36 extending downwardly from the junction of the crushing and grinding sections to the lower end of the grinding section. It should be noted that the height of the helix of the crushing section should be higher than the height of the helix of the grinding section, so that a larger receiving space is formed between the screw of the crushing section and the extrusion container, and a smaller receiving space is formed between the screw of the grinding section and the extrusion container. In addition, an upper cover 11 having a feeding hole is provided at an upper opening of the juice collecting chamber, and a juice outlet hole and a residue outlet hole are provided at a lower portion of the juice collecting chamber, and a motor is connected to a screw shaft through a transmission mechanism 121 so as to drive the screw to rotate.

When needing to squeeze juice, throw into the recipient through the material hole of throwing of upper cover with cutting into massive material earlier, at this moment, the main spiral of the broken section of motor drive's screw rod shears the breakage to the material, thereby form less cubic, then main spiral pushes the material downwards, make the material get into and grind the section, main spiral and grinding spiral extrude the grinding together to the material this moment, thereby squeeze out the juice, the juice of squeezing out is outwards flowed through going out the juice hole after the filtration through recipient play juice gap, the pomace is then outwards discharged through the hole of slagging tap.

It should be noted that the rotation direction of the material to be cut, crushed and extruded when the screw is in operation is referred to as the forward direction, the side of the screw located on the forward side in the rotation direction when the screw is in forward rotation is referred to as the pushing side, the side located on the backward side in the rotation direction is referred to as the receiving side, and correspondingly, the side of the screw pushing side is referred to as the pushing side, and the side of the screw receiving side is referred to as the receiving side. When the screw rod rotates forwards, the pushing side face forms an inclined downward acting force on the material, so that the material rotates and moves downwards, and the material entering the extrusion container falls onto the spiral material facing side face at first.

In order to make the screw uniformly bear the force, as shown in fig. 2 and fig. 3, an auxiliary screw 37 extending downwards from the crushing section is arranged on the surface of the screw body, the upper end of the auxiliary screw is called as the starting end, the lower end is called as the terminating end, and the central angle α corresponding to the starting end of the auxiliary screw and the starting end of the main screw is controlled within the range of 160 degrees to α degrees to 200 degrees, preferably 180 degrees, so that the screw body of the crushing section is provided with the main screw and the auxiliary screw which are approximately uniformly distributed in the circumferential direction, thereby fully filling the screw blank area of the screw body on the opposite side of the starting end of the main screw, making the upper end of the screw body uniformly bear the force, avoiding the screw vibration caused by shaking during the operation, reducing the load of the main screw, and further facilitating the improvement of the service life.

It will be appreciated that the main helix of the grinding section acts the same as the grinding helix, and therefore a helical grinding channel may be formed between the main helix of the grinding section and the grinding helix. Preferably, as shown in fig. 4, at least two grinding screws, in this embodiment two, are provided on the surface of the screw body, and a spiral grinding channel 38 is formed between two adjacent grinding screws, so as to reduce the distance between two circles of screws in the axial direction of the grinding section, reduce the inlet width of the grinding channel, facilitate the secondary crushing of the material into smaller blocks, and enable the material to be sufficiently extruded, ground and juiced in the grinding channel. In addition, the lower end of the auxiliary spiral is positioned at the inlet of the upper part of the grinding channel formed by the two grinding spirals. After the material is cut and broken into small pieces by the auxiliary screw, the material moves downwards to the termination end of the auxiliary screw along the pushing side face of the auxiliary screw and then smoothly enters the grinding channel connected with the termination end of the auxiliary screw, so that the material is prevented from reversely returning upwards at the termination end of the auxiliary screw.

It will be understood that when the lower end of the auxiliary helix is located at the inlet of the upper part of the grinding channel formed by the two grinding helices, the two grinding helices are arranged circumferentially with respect to the auxiliary helix: one of the grinding spirals is located on the front side of the auxiliary spiral in the forward rotation direction of the screw, and the other grinding spiral is located on the rear side of the auxiliary spiral in the forward rotation direction of the screw; the two grinding screws are arranged in the axial direction relative to the auxiliary screw: wherein the front grinding helix is located axially below the auxiliary helix and the rear grinding helix is located axially above the auxiliary helix.

Further, we may make the lower end of the auxiliary screw partially overlap in the circumferential direction with the starting end of the grinding screw on the front side in the forward rotational direction of the screw. That is, the lower end of the auxiliary helix projects downward along the axis, with the projection partially overlapping the beginning of the lower grinding helix. That is, the lower end of the auxiliary spiral forms a partial overlapping region c with the lower grinding spiral in the circumferential direction. When the screw rod rotates forwards to squeeze juice, small materials sheared and broken by the auxiliary spiral gradually move downwards along the pushing side face of the auxiliary spiral to the lower end of the auxiliary spiral, and at the moment, the materials are overlapped and loaded by the starting end of the grinding spiral partially overlapped with the auxiliary spiral, so that the materials smoothly enter a grinding channel formed by the front and the rear grinding spirals at the lower end of the auxiliary spiral, the materials are prevented from falling into the next grinding channel due to the fact that a gap is generated at the joint of the lower end of the auxiliary spiral and the grinding spiral at the front side, the materials are ensured to be fully extruded and ground, and the juice yield is improved.

Preferably, the radial dimension of the screw body of the crushing section is gradually increased from top to bottom, so that a filling area 331 is formed on the surface of the screw body, and on the one hand, the center of gravity of the screw body can be effectively balanced, so that the center of gravity of the screw is located on the axis of the screw. When the screw rod rotates, the screw rod cannot shake or vibrate due to eccentricity, and when the screw rod is disassembled, the screw rod can be stably and vertically placed on a table top; on the other hand, the clearance that holds between the screw rod that makes broken section and the recipient reduces from last to down gradually to carry out preliminary extrusion to the material when shearing the breakage to the material, be favorable to improving juice rate. That is, the filling zone may smoothly transition the accommodating void of the crushing section with the accommodating void of the grinding section. In particular, the filling zone provides a progressively increasing radial squeezing action on the material as it moves progressively downwardly in the crushing section, thereby facilitating an increase in juice extraction efficiency. It can be understood that the torque of the screw has a labor-saving effect when being converted into the radial extrusion effect on the material, so that the load of the motor and the screw is favorably reduced on the premise of ensuring the juice yield, and the service life of the screw is further favorably prolonged.

Preferably, the filling area extends to the termination end of auxiliary screw from the initiating terminal of auxiliary screw to make the smooth transitional coupling in screw body surface of filling area and grinding section, when guaranteeing that the main screw of crushing section and auxiliary screw cut the breakage to the material, the filling area of the screw body still can form a radial extrusion to the material, in order to improve juice efficiency.

As mentioned above, the auxiliary screw includes the material receiving side and the material pushing side, and it can be understood that when the screw body is provided with the filling area, the distances from the surfaces of the screw body on the material receiving side and the material pushing side of the auxiliary screw to the top surface of the main screw are different.

Further, the distance from the surface of the screw body on the material facing side of the auxiliary screw to the top surface of the main screw is L1, the distance from the surface of the screw body on the material pushing side of the auxiliary screw to the top surface of the main screw is L2, and the ratio of the distances from the surface of the screw bodies on the material facing side and the material pushing side on the auxiliary screw at the same position in the circumferential direction to the top surface of the main screw can be controlled within the following range: L2/L1 is not less than 0.2 and not more than 0.5, so that the gravity center of the screw rod is effectively balanced, the screw rod is prevented from shaking during rotation, and meanwhile, the material in the crushing section can be subjected to preliminary extrusion, the load of the main screw and the auxiliary screw in the crushing section is further reduced, and the root cracking caused by overlarge load of the auxiliary screw and the main screw is avoided.

Furthermore, the distance L1 from the surface of the screw body on the material facing side of the auxiliary screw to the top surface of the main screw can be controlled in the following range: l1 is not less than 15mm and not more than 30mm to be favorable to providing sufficient clearance of holding for the material of broken section, thereby be favorable to the material of great piece directly to throw into in the recipient and squeeze juice, can carry out abundant shearing breakage to the material simultaneously, so that make the material conveniently get into subsequent grinding passageway and extrude and grind, and ensure that main spiral has sufficient intensity, avoid leading to the fracture because of the load is too big at main spiral's root.

As we know, the starting end of the main screw is flush with the upper end surface of the screw body, and in order to make the screw of the crushing section have enough accommodating clearance, we can control the distance A between the starting end of the auxiliary screw and the upper end surface of the screw body in the following range: a is more than or equal to 0mm and less than or equal to 15mm, and the optimal value is 8mm, so that the starting end of the auxiliary screw and the starting end of the main screw have a height difference, when the material falls to the starting end of the auxiliary screw, the material is slightly lower than the starting end of the main screw, and at the moment, the rotating main screw can well shear and crush the material.

As another preferred scheme, as shown in fig. 3, the axial projection of the auxiliary spiral top surface of the present invention adopts an archimedean spiral line, so that the radial height of the auxiliary spiral top surface is gradually increased from the start end to the end, and a larger distance and a larger gap are provided between the start end of the auxiliary spiral and the inner wall of the extrusion container. When the material of great piece is thrown into in the recipient, the material can conveniently fall into in the space between auxiliary screw and the recipient to be the fritter material by auxiliary screw or main spiral shearing breakage, avoid the material of great piece to face material side idle running at auxiliary screw initiating end effectively. The height of the auxiliary screw which is gradually increased can ensure that the material is effectively sheared and crushed, and is beneficial to the stress balance of the main screw and the auxiliary screw.

Preferably, the radial distance between the top surface of the auxiliary screw and the top surface of the main screw at the corresponding position is B, and B is more than or equal to 0mm and less than or equal to 25mm, and particularly, when the axial projection of the top surface of the auxiliary screw adopts an Archimedes spiral line, the radial distance between the top surface of the starting end of the auxiliary screw and the top surface of the main screw at the corresponding position can be 25mm, and the radial distance between the top surface of the ending end of the auxiliary screw and the top surface of the main screw at the corresponding position is 0 mm. The screw rod has the advantages that the screw rod is favorable for forming enough accommodating gaps for accommodating materials, the load and stress balance of the main screw and the auxiliary screw of the screw rod can be ensured, and the screw rod is prevented from shaking during working.

In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.

Claims

1. The utility model provides a little juice extractor of vibration, includes the frame, the juice collecting cavity of being connected with the frame, vertically sets up the screw rod at the juice collecting cavity, the screw rod is from last to including crushing section, grinding section down, the screw rod includes the screw rod body and screw shaft, is equipped with on the surface of the screw rod body by the main spiral that the crushing section upper end extends to grinding section lower extreme, by the crushing section on with grinding section junction extend to the grinding spiral that grinds the section lower extreme, characterized by still is equipped with the supplementary spiral that extends downwards from the crushing section on the screw rod body surface, the central angle that corresponds between the initiating terminal of supplementary spiral and the initiating terminal of main spiral is α to 160 is no less than α and is no less than 200.

2. A juicer with low vibration as claimed in claim 1, wherein at least two of said grinding screws are provided on the surface of the screw body, so that a spiral grinding passage is formed between adjacent grinding screws, and the lower end of said auxiliary screw is located at the inlet of the upper part of the grinding passage.

3. A juicer having little vibration according to claim 1, wherein a lower end of said auxiliary screw is partially overlapped in a circumferential direction with a starting end of the grinding screw at a front side in a forward rotational direction of the screw.

4. A juicer having less vibration as claimed in claim 1, wherein the screw body of the crushing section increases in radial dimension from top to bottom to form a packed region on the surface of the screw body.

5. A juicer according to claim 4 wherein the filling zone extends from the start of the auxiliary screw to the termination of the auxiliary screw.

6. The juicer of claim 1, wherein the auxiliary screw comprises a material facing side surface and a material pushing side surface, the distance from the screw body surface of the auxiliary screw on the material facing side surface to the top surface of the main screw is L1, the distance from the screw body surface of the auxiliary screw on the material pushing side surface to the top surface of the main screw is L2, and at the same position in the circumferential direction, the distance is 0.2-L2/L1-0.5.

7. A juicer with low vibration as claimed in claim 6, wherein said L1 is 15mm or more and 30mm or less.

8. The juicer of claim 1, wherein the distance between the starting end of the auxiliary screw and the upper end surface of the screw body is A, and 0mm is less than or equal to A and less than or equal to 15 mm.

9. The juicer of claim 1, wherein the radial height of the top surface of the auxiliary screw is at least partially increased from the initial end to the terminal end, so that the axial projection of the top surface of the auxiliary screw is an Archimedes spiral line.

10. The juicer of claim 1, wherein the radial distance between the top surface of the auxiliary screw and the top surface of the main screw at the corresponding position is B, and B is greater than or equal to 0mm and less than or equal to 25 mm.