Juicing screw and juicing equipment with same

Abstract

The juicing screw comprises a squeezing portion and a cutting portion, a plurality of spiral ribs are arranged on the outer circumferential face of the squeezing portion, the squeezing portion and the cutting portion are connected through a shearing portion, the shearing portion is in a cone frustum shape with the small upper portion and the large lower portion, and the cutting portion is in a cone frustum shape with the small upper portion and the large lower portion. A plurality of lower shearing blades are evenly distributed on the side face of the cone frustum of the shearing part in the circumferential direction, and the lower shearing blades extend in the radial direction of the shearing part. According to the device, the lower shearing blade can be matched with the upper shearing blade on the filtering assembly, crude fibers in materials such as celery are transversely cut off, and the taste of crude fiber type fruit and vegetable juice is improved.

Description

Technical Field

[0001] The present application relates to the technical field of juice extraction equipment, and in particular to a juice extraction screw and juice extraction equipment having the juice extraction screw. Background Art

[0002] Juicing equipment uses a juicing screw to squeeze fruits, vegetables and other materials to obtain juice.

[0003] Existing juicing screws typically consist of a pressing section and a cutting section. The cutting section chops fruits and vegetables, and the pressing section squeezes them to extract juice. However, in practice, this structure of the juicing screw does not completely crush the coarse fibers when processing celery and other ingredients, resulting in a poor taste for coarse fiber-based fruit and vegetable juices. Summary of the Invention

[0004] In view of this, the present invention provides a juicing screw and a juicing device having the juicing screw to solve the problem of poor taste of fruit and vegetable juice when processing materials such as celery in the prior art.

[0005] The juice extraction screw provided by the present invention includes a pressing part and a cutting part. A plurality of spiral ribs are provided on the outer circumferential surface of the pressing part. The pressing part and the cutting part are connected by a shearing part. The shearing part is in the shape of a frustum of cone with a small top and a large bottom. A plurality of lower shearing blades are evenly distributed along the circumferential direction on the side surface of the frustum of cone of the shearing part. The lower shearing blades are extended radially along the shearing part.

[0006] Based on the above technical solution, the pressing part and the cutting part of the present application are connected through a shearing part. A plurality of lower shearing blades are evenly distributed circumferentially on the frustum side surface of the shearing part. The lower shearing blades are extended radially along the shearing part and cooperate with the upper shearing blades on the filtering component to horizontally cut off the crude fiber in materials such as celery, thereby improving the taste of such crude fiber fruit and vegetable juice.

[0007] In the above technical solution, preferably, the cutting portion is arranged in a spiral shape around the cutting shaft and smoothly transitions to the outer circumference of the shearing portion. The cutting shaft is eccentrically disposed relative to the pressing portion, and the axis of the cutting shaft is inclined relative to the axis of the pressing portion. This allows the cutting shaft to have a downward thrust, thereby improving juice extraction efficiency.

[0008] In the above technical solution, preferably, a connecting shaft is provided on the bottom surface of the pressing section, and a spiral groove is provided on the outer circumference of the connecting shaft for mating with a drive shaft of a driving device. During the juicing process, the downward squeezing force pulls the juicing screw downward and tight against the drive shaft, thereby reducing operating noise.

[0009] In the above technical solution, preferably, the height of the shearing section is 1 / 5 to 1 / 6 of the height of the pressing section. The outer contours of the cutting section, shearing section, and pressing section are connected in a line-like manner, with the outer contour of the cutting section tilting inward from top to bottom, the outer contour of the shearing section tilting outward from top to bottom, and the outer contour of the pressing section tilting outward from top to bottom. The cutting section, shearing section, and pressing section all produce a downward propulsion effect, thereby improving juice extraction efficiency.

[0010] In the above technical solution, the spiral ribs have a spiral propulsion angle of 25 to 35 degrees. Spindle-shaped booster ribs are located between two adjacent spiral ribs. These booster ribs are curved at both ends and are narrower than their central width. They are symmetrically located between the two adjacent spiral ribs along the width of the spiral rib spacing. The booster ribs optimize material conveying, extrusion, and juice extraction efficiency.

[0011] The present application also provides a juicing device, including a juicing cylinder and a feeding cylinder detachably arranged at the upper end of the juicing cylinder, a juicing screw is arranged in the juicing cylinder, and a filtering assembly is arranged around the juicing screw in the juicing cylinder, and the juicing screw is the above-mentioned juicing screw.

[0012] In the above technical solution, preferably, a connecting shaft is provided on the bottom surface of the pressing part, which is matched and connected with the driving mechanism in the base of the juice extraction equipment, and a spiral groove is provided on the outer circumferential surface of the connecting shaft. The driving mechanism includes a motor and a reducer matched and connected with the motor, and the driving shaft of the reducer is arranged to pass through the top surface of the base, and a driving sleeve is provided on the driving shaft, and a spiral rib is provided on the outer circumferential surface of the driving sleeve, and the spiral rib is matched and connected with the spiral groove on the connecting shaft. The driving shaft adopts a double flat shaft end structure, and a connecting shaft hole is provided on the bottom surface of the driving sleeve, and two triangular ridges are symmetrically provided on the inner wall surface of the connecting shaft hole, and the spacing between the two triangular ridges is matched with the thickness of the driving shaft.

[0013] In the above technical solution, preferably, the filter assembly includes a cylindrical outer cylinder and an inner cylinder detachably coupled to the outer cylinder, the outer cylinder includes a plurality of outer cylinder slots evenly distributed along the circumference, the inner cylinder includes a plurality of inner cylinder ribs evenly distributed along the circumference, the inner cylinder ribs are adapted to the outer cylinder slots, the upper ends of the inner cylinder ribs are connected and fixed by upper connecting rings, and the lower ends are connected and fixed by lower connecting rings; the inner cylinder ribs are inserted into the outer cylinder slots so that the inner cylinder is coupled to the outer cylinder, and the gap between the inner cylinder ribs and the side walls of the outer cylinder slots forms a filter hole for juice to pass through; the lower surface of the inner wall of the upper connecting ring is a slope, and a plurality of upper shearing blades are evenly distributed along the circumference on the slope, the upper shearing blades extend radially and match the lower shearing blades for cutting crude fiber materials such as celery.

[0014] In the above technical solution, preferably, the lower surface of the inner wall of the upper connecting ring is an inclined surface, and the upper shearing edge is arranged on the inclined surface.

[0015] In the above technical solution, preferably, the inner end of the upper shearing edge protrudes from the inner wall surface of the upper connecting ring and extends upward to form a shear reinforcement rib.

[0016] In the above technical solution, preferably, the outer cylinder is integrally formed at the lower part of the feeding cylinder.

[0017] As can be seen from the above technical solution, the juicing screw and juicing equipment provided by the present invention solve the problem of poor taste of fruit and vegetable juice when processing materials such as celery in the prior art. Compared with the prior art, the present invention has the following beneficial effects:

[0018] The juicing screw includes a pressing part and a cutting part, which are connected by a shearing part. The shearing part is in the shape of a truncated cone with a small upper part and a large lower part, and a plurality of lower shearing blades are evenly distributed along the circumference of the side surface of the truncated cone. The lower shearing blades are extended along the radial direction of the shearing part. The lower shearing blades cooperate with the upper shearing blades on the filter assembly to cut off the crude fiber in materials such as celery horizontally, thereby improving the taste of such crude fiber fruit and vegetable juice. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces and describes the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0020] Figure 1 A schematic diagram of the juice extraction device provided by the present invention;

[0021] Figure 2 for Figure 1 A cross-sectional view of the juice extraction device shown with its base hidden;

[0022] Figure 3 Schematic diagram of the decomposition structure of the filter assembly in the present invention;

[0023] Figure 4 Schematic diagram of the feed barrel in the present invention when viewed from above;

[0024] Figure 5 Schematic diagram of the inner cylinder in the present invention;

[0025] Figure 6 Schematic diagram of the juice extraction screw in the present invention;

[0026] Figure 7 for Figure 5 A side view of the juicing screw is shown;

[0027] Figure 8 A partially cutaway schematic diagram of the juice extraction device provided by the present invention;

[0028] Figure 9 It is a partial cutaway schematic diagram of the inner cylinder in the present invention;

[0029] Figure 10 for Figure 8 A part in the figure is enlarged;

[0030] Figure 11 is a schematic diagram of the base in the present invention;

[0031] Figure 12 for Figure 11 The assembly diagram of the drive sleeve in the base is shown;

[0032] Figure 13 is a schematic diagram of the drive sleeve in the present invention;

[0033] Figure 14 It is a schematic diagram of the cooperation between the drive shaft and the drive sleeve in the present invention.

[0034] Figures 1-14 In the figure, the corresponding relationship between the parts is as follows:

[0035] Juicing cylinder 100, feeding cylinder 200, juicing screw 300, filtering assembly 400, base 500;

[0036] Juice outlet 101, residue outlet 102, hollow portion 103, handle 104;

[0037] Cover body 210, feed port 211;

[0038] Outer cylinder 410, inner cylinder 420, frustum connecting portion 430;

[0039] Outer cylinder slot 411, outer cylinder rib 412, fixing ring 413, limiting groove 414, boss 415, arc portion 416;

[0040] Inner cylinder rib 421, upper connecting ring 422, lower connecting ring 423, limiting lug 424, first slope 425, second slope 426, reinforcing rib 427, upper shearing edge 428, cutting edge reinforcing rib 429;

[0041] Buckle 431;

[0042] Pressing section 310, cutting section 320, shearing section 330, connecting shaft 340;

[0043] Spiral ribs 311, booster ribs 312;

[0044] Cutting shaft 321, cutting edge 322;

[0045] Lower shearing edge 331;

[0046] Drive shaft 510 , drive sleeve 520 , spiral ribs 521 , triangular ridges 522 . DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0048] In order to more clearly explain and illustrate the technical solution and implementation of the present invention, several preferred specific embodiments for implementing the technical solution of the present invention are introduced below.

[0049] It should be noted that the directional words such as "inside, outside", "front, back" and "left, right" in this article are expressed based on the product usage status. Obviously, the use of the corresponding directional words does not constitute a limitation on the scope of protection of this scheme.

[0050] like Figure 1 、 Figure 2 As shown, the present invention provides a juice extraction device including a juice extraction barrel 100 and a feed barrel 200 detachably arranged on the upper end of the juice extraction barrel 100, a cover body 210 is provided on the upper end of the feed barrel 200, and a feed port 211 is provided at the center of the cover body 210, through which materials such as fruits and vegetables can be put into the feed barrel 200.

[0051] A juicing screw 300 is disposed within the juicing barrel 100, and a filter assembly 400 is disposed within the juicing barrel 100 and around the juicing screw 300. The juicing barrel 100 is mounted on a base 500. A drive mechanism is disposed within the base 500 and coupled to the juicing screw 300 to drive the juicing screw 300 to rotate and squeeze the material. The filter assembly 400 is used to separate the juice from the residue. The juice flows out of a juice outlet 101 on the juicing barrel 100, and the residue is discharged from a residue outlet 102 on the juicing barrel 100.

[0052] The outer wall of the juice extractor 100 is provided with a hollow portion 103 that penetrates the outer wall to form a hidden handle 104. This design reduces the occupied space and is convenient for placement and storage.

[0053] like Figure 3As shown, the filter assembly 400 includes a cylindrical outer cylinder 410 and an inner cylinder 420, and the inner cylinder 420 is coupled to the outer cylinder 410. The outer cylinder 410 is integrally formed at the lower portion of the feed cylinder 200. Specifically, the diameter of the outer cylinder 410 is smaller than the diameter of the feed cylinder 200, and the upper end of the outer cylinder 410 is connected to the lower end of the outer cylinder 410 via a frustum connecting portion 430. A plurality of clips 431 are further provided on the outer side surface of the upper end of the frustum connecting portion 430. The plurality of clips 431 are evenly distributed along the circumference, and the inner wall of the juicer cylinder 100 is provided with slots adapted to the clips 431. The outer cylinder 410 is rotatably connected to the inner wall of the juicer cylinder 100 via the clips 431 and the slots, forming a detachable connection structure. The rotating clip structure is an existing mature design and will not be described in detail here.

[0054] The outer cylinder 410 includes a plurality of outer cylinder slots 411 uniformly distributed along the circumference. The outer cylinder slots 411 extend along the axial direction of the outer cylinder 410 . Adjacent outer cylinder slots 411 form outer cylinder ribs 412 . The lower outer side surfaces of the outer cylinder ribs 412 are connected by a fixing ring 413 .

[0055] The inner cylinder 420 includes a plurality of inner cylinder ribs 421 uniformly distributed along the circumferential direction. The inner cylinder ribs 421 extend along the axial direction of the inner cylinder 420. The upper ends of the inner cylinder ribs 421 are connected and fixed by upper connecting rings 422. The lower ends of the inner cylinder ribs 421 are connected and fixed by lower connecting rings 423. The inner cylinder ribs 421 are adapted to the outer cylinder slots 411 on the outer cylinder 410.

[0056] The inner cylinder rib 421 is inserted into the outer cylinder slot 411 from bottom to top, so that the inner cylinder 420 is coupled to the outer cylinder 410. The gap between the inner cylinder rib 421 and the side wall of the outer cylinder slot 411 forms a filtering hole for the juice to pass through.

[0057] like Figure 3 、 Figure 4 、 Figure 5 As shown, at least two limiting grooves 414 are circumferentially defined on the bottom surface of the fixing ring 413 of the outer cylinder 410. Limiting lugs 424 that mate with the limiting grooves 414 are defined on the outer surface of the lower connecting ring 423 of the inner cylinder 420. The limiting lugs 424 are embedded in the limiting grooves 414 and are connected by extrusion and interference fit between the side walls, thereby achieving circumferential limiting of the inner cylinder 420 and the outer cylinder 410.

[0058] The outer side wall of the fixing ring 413 corresponding to the limiting groove 414 protrudes outward to form a boss 415. The outer side surface of the boss 415 has a concave arc portion 416. The concave arc portion 416 can be used to press down and remove the inner cylinder 420, which is easy to operate.

[0059] This application solution changes the traditional design where the filter assembly is independently installed in the juicer barrel. The traditional design requires reaching into the juicer barrel to remove the filter assembly, which is inconvenient and poses a risk of cuts. In this application solution, the outer barrel 410 of the filter assembly 400 is integrally formed at the bottom of the feed barrel 200. The filter assembly 400 can be removed together with the feed barrel 200. That is, when the feed barrel 200 is pulled upward, the filter assembly 400 can be taken out at the same time, eliminating the need to reach into the juicer barrel 100 to remove the filter assembly. This makes disassembly and cleaning convenient and quick.

[0060] In this embodiment, the inner wall of the outer cylinder 410 is shaped like a frustum, narrower at the top and wider at the bottom. The outer wall of the inner cylinder 420 matches the inner wall of the outer cylinder 410. The upper width of the outer cylinder slot 411 is narrower than the lower width, forming an isosceles trapezoidal projection. This ensures a tight fit between the outer cylinder 410 and the inner cylinder 420, improving juice fineness and yield. The outer cylinder ribs 412 gradually increase in thickness from bottom to top, forming a frustum-shaped inner wall structure.

[0061] A first slope 425 is provided at the upper end of the inner cylinder rib 421 , and second slopes 426 are provided on both sides of the outer side surface of the inner cylinder rib 421 , which facilitates the insertion of the inner cylinder rib 421 into the outer cylinder slot 411 and realizes automatic centering.

[0062] Reinforcement ribs 427 are provided on the inner side surface of the inner cylinder rib 421 , which improves the strength of the outer cylinder rib 412 and prolongs its service life.

[0063] like Figure 6 、 Figure 7 As shown, the juicing screw 300 in the present application includes a pressing portion 310 and a cutting portion 320, which are connected by a shearing portion 330. The pressing portion 310 and the shearing portion 330 are both in the shape of a truncated cone with a small top and a large bottom.

[0064] A plurality of spiral ribs 311 are provided on the side surface of the frustum of the pressing part 310 .

[0065] The cutting section 320 is spirally arranged around the cutting axis 321 and smoothly connects to the outer circumference of the shearing section 330. The outer surface of the cutting section 320 is provided with multiple cutting edges 322 at intervals. These cutting edges 322 cut large pieces of food, such as apples, into smaller pieces before they fall into the pressing section 310.

[0066] A plurality of lower shearing blades 331 are evenly distributed along the circumferential direction on the outer circumferential surface of the shearing portion 330 , and the lower shearing blades 331 extend along the radial direction of the shearing portion 330 .

[0067] like Figure 8 、 Figure 9 、 Figure 10As shown, the lower surface of the inner wall of the upper connecting ring 422 of the inner cylinder 420 is a slope, and multiple upper shearing blades 428 are evenly distributed circumferentially on the upper surface of the slope. The upper shearing blades 428 extend radially and match the lower shearing blades 331 for cutting coarse fiber materials such as celery.

[0068] The inner end of the upper shearing edge 428 protrudes from the inner wall surface of the upper connecting ring 422 and extends upward to form a cutting edge reinforcement rib 429 to improve the strength of the upper shearing edge 428.

[0069] In this embodiment, the cutting shaft 321 is eccentrically arranged with respect to the pressing section 310, and the axis O2 of the cutting shaft 321 is inclined relative to the axis O1 of the pressing section 310. As a result, the cutting shaft 321 generates downward pressure during rotation, pushing the material into the pressing section 310 and improving the pressing efficiency.

[0070] The height of the shearing section 330 is 1 / 5 to 1 / 6 of the height of the pressing section 310, and the height of the cutting section 320 is 0.8 to 1.2 times that of the pressing section 310. The outer contours of the cutting section 320, the shearing section 330, and the pressing section 310 are connected in a line-like manner. Specifically, the outer contour of the cutting section 320 is inclined inward from top to bottom, the outer contour of the shearing section 330 is inclined outward from top to bottom, and the outer contour of the pressing section 310 is inclined outward from top to bottom. Figure 7 Indicated by the dotted line.

[0071] This solution optimizes the overall outer profile of the juicing screw 300, allowing the cut material to be quickly advanced to the pressing section for gradual pressing, thereby improving juicing efficiency and yield. During the pressing process, the pressing section 310, shearing section 330, and cutting section 320 all generate downward pressure, pressing the juicing screw 300 tightly against the drive shaft of the drive device, reducing noise generated by the upward and downward movement of the juicing screw 300 and the resulting gap.

[0072] In conventional designs, the spiral propulsion angle of the juicing screw 300 is usually 10 to 20 degrees to meet the needs of squeezing. In the present application, the spiral propulsion angle β of the spiral rib 311 is set to 25 to 35 degrees. Due to the increased spiral propulsion angle, the propulsion speed is accelerated and the juicing efficiency is improved.

[0073] To further improve juice yield, the present invention also features spindle-shaped booster ribs 312 between two adjacent spiral ribs 311. These ribs are curved at both ends and narrower in the middle (thicker in the middle, tapered at both ends) to balance propulsion and compression. Each booster rib 312 is symmetrically positioned between two adjacent spiral ribs 311, with the center of each rib 312 positioned at the same height from the bottom of the pressing section 310.

[0074] The boosting ribs 312 can optimize the efficiency of material transportation, squeezing, and juice extraction. Specifically, it has the following advantages:

[0075] First, the boosting ribs exert additional radial force on the material through their gradually changing curved surface profile, forcing the material to move forward and reducing backflow or stagnation.

[0076] Second, the booster ribs form a secondary extrusion area between adjacent spiral ribs, which prolongs the time the material is pressed and allows the juice to be released more fully.

[0077] Third, the tip of the spindle-shaped design contacts the material first, gradually increasing the pressure to avoid blockage caused by sudden squeezing.

[0078] Fourth, the edges of the booster ribs shear and tear the fibers during the rotation process, destroying the cell wall structure, releasing more juice while reducing the moisture content of the residue.

[0079] Fifth, the spindle-shaped booster ribs divide the bulky materials through diversion and guide them evenly into the extrusion area, reducing the risk of blockage.

[0080] In the present application, the height of the booster rib is about 50% to 70% of the height of the spiral rib. If it is too high, the resistance will increase, and if it is too low, the effect will be insufficient.

[0081] like Figure 7 As shown, a connecting shaft 340 is provided on the bottom surface of the pressing part 310 , and a spiral groove is provided on the outer circumferential surface of the connecting shaft 340 , which is matched and connected with the driving shaft of the driving device.

[0082] Specifically, if Figure 11 、 Figure 12 As shown, the driving mechanism in the base 500 includes a motor and a reducer matched with the motor. The driving shaft 510 of the reducer is arranged to pass through the top surface of the base 500. A driving sleeve 520 is provided on the driving shaft 510. A spiral rib 521 is provided on the outer circumferential surface of the driving sleeve 520. The spiral rib 521 is adapted to be connected with the spiral groove on the connecting shaft 340, thereby driving the juice extraction screw 300 to rotate through the motor.

[0083] In this application, the drive sleeve 520 is connected to the connecting shaft 340 of the juicing screw 300 using a spiral structure. During operation, the spiral structure tightens the connection between the connecting shaft 340 and the drive sleeve 520, reducing operating noise. However, this design also leads to the problem of laborious disassembly between the connecting shaft 340 and the drive sleeve 520 (and between the juicing barrel 100 and the base 500). To this end, in this application, the connection structure between the drive shaft 510 and the drive sleeve 520 is optimized.

[0084] like Figure 12 、 Figure 13 、 Figure 14As shown, the drive shaft 510 adopts a double-flat shaft end structure, i.e., the shaft ends of the drive shaft 510 are symmetrically milled flat on both sides. It consists of a connecting post and an arc-shaped portion formed on two opposing surfaces of the connecting post. A connecting shaft hole is provided on the bottom surface of the drive sleeve 520. Two triangular ridges 522 are symmetrically arranged on the inner wall of the connecting shaft hole. The spacing between the two triangular ridges 522 matches the thickness of the connecting post of the drive shaft 510. When the drive shaft 510 is inserted into the connecting shaft hole, the arc-shaped portion of the drive shaft 510 matches the inner wall of the connecting shaft hole. The triangular ridges 522 are isosceles triangles.

[0085] The connection structure between the drive shaft 510 and the drive sleeve 520 provided in the present application has a W2 free motion angle. During normal operation, the drive shaft 510 is in close contact with the first side wall of the two triangular ridges 52, driving the drive sleeve 520 to rotate. To solve the problem of laborious disassembly of the drive sleeve 520 from the connecting shaft 340 of the juicing screw 300 after operation, the present application scheme first controls the motor to reverse during shutdown. Due to the W2 free motion angle, the drive shaft 510 can disengage from the first side wall of the two triangular ridges 52 in close contact during operation and rotate to the second side wall of the two triangular ridges 52, thereby driving the drive sleeve 520 to reverse, loosening the spiral structure between the drive shaft 510 and the drive sleeve 520, thereby conveniently removing the juicer 100 from the base 500.

[0086] When shutting down, first control the motor to reverse, which can be achieved by using programs or double switches and other technologies.

[0087] Based on the description of the above specific embodiments, the juicing screw and the juicing device having the juicing screw provided by the present invention have the following advantages compared with the prior art:

[0088] First, the juicing screw includes a pressing part and a cutting part, which are connected by a shearing part. A plurality of lower shearing blades are evenly distributed along the circumference on the frustum side of the shearing part. The lower shearing blades extend radially along the shearing part and cooperate with the upper shearing blades on the filter assembly to cut off the crude fiber in materials such as celery horizontally, thereby improving the taste of such crude fiber fruit and vegetable juice.

[0089] Second, the spiral propulsion angle of the spiral ribs is set to 25 to 35 degrees, and a spindle-shaped booster rib is provided between two adjacent spiral ribs. The two ends of the booster rib are curved and the width is smaller than the middle width. The booster rib is symmetrically arranged between the two adjacent spiral ribs in the direction of the spiral rib interval width. The booster rib is used to optimize the material conveying, extrusion and juice extraction efficiency.

[0090] Finally, it should be noted that the terms "comprise," "include," or any other variations thereof, as used herein, are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0091] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the scope of protection of the present invention.

Claims

1. A juice extraction screw, comprising a pressing portion and a cutting portion, wherein the outer circumferential surface of the pressing portion is provided with a plurality of spiral ribs, characterized in that: The pressing section and the cutting section are connected by a shearing section, which is in the shape of a truncated cone with a small upper portion and a large lower portion. A plurality of lower shearing blades are evenly distributed along the circumferential direction on the side surface of the truncated cone of the shearing section, and the lower shearing blades are extended radially along the shearing section.

2. The juice extraction screw according to claim 1, characterized in that: The cutting part is arranged in a sheet-like spiral around the cutting shaft and is smoothly transitioned to the outer circumference of the shearing part. The cutting shaft is eccentrically arranged with respect to the pressing part, and the axis of the cutting shaft is inclined with respect to the axis of the pressing part.

3. The juice extraction screw according to claim 1, characterized in that: A connecting shaft is provided on the bottom surface of the pressing part, and a spiral groove for matching a driving shaft of a connecting driving device is provided on the outer circumferential surface of the connecting shaft.

4. The juice extraction screw according to claim 1, characterized in that: The height of the shearing section is 1 / 5 to 1 / 6 of the height of the pressing section. The outer contour line of the cutting section, the shearing section and the pressing section is in a line-breaking shape, and the outer contour line of the cutting section is inclined inward from top to bottom, the outer contour line of the shearing section is inclined outward from top to bottom, and the outer contour of the pressing section is inclined outward from top to bottom.

5. The juice extraction screw according to claim 1, characterized in that: The spiral propulsion angle of the spiral rib is set to 25 to 35 degrees, and a spindle-shaped booster rib is provided between two adjacent spiral ribs. The two ends of the booster rib are arc-shaped and the width is smaller than the middle width. The booster rib is symmetrically arranged between the two adjacent spiral ribs in the direction of the spiral rib interval width.

6. A juice extraction device, comprising a juice extraction cylinder and a feed cylinder detachably arranged at the upper end of the juice extraction cylinder, wherein a juice extraction screw is arranged in the juice extraction cylinder, and a filter assembly is arranged in the juice extraction cylinder around the juice extraction screw, characterized in that: The juicing screw is the juicing screw according to any one of claims 1 to 5.

7. The juice extraction device according to claim 6, characterized in that: A connecting shaft is provided on the bottom surface of the pressing part, which is matched and connected with the driving mechanism in the base of the juice extraction equipment. A spiral groove is provided on the outer circumferential surface of the connecting shaft. The driving mechanism includes a motor and a reducer matched and connected with the motor. The driving shaft of the reducer is arranged through the top surface of the base. A driving sleeve is provided on the driving shaft. A spiral rib is provided on the outer circumferential surface of the driving sleeve. The spiral rib is matched and connected with the spiral groove on the connecting shaft. The driving shaft adopts a double flat shaft end structure. A connecting shaft hole is provided on the bottom surface of the driving sleeve. Two triangular ridges are symmetrically provided on the inner wall surface of the connecting shaft hole. The spacing between the two triangular ridges is matched with the thickness of the driving shaft.

8. The juice extraction device according to claim 6, characterized in that: The filter assembly includes a cylindrical outer cylinder and an inner cylinder detachably coupled to the outer cylinder, the outer cylinder including a plurality of outer cylinder slots evenly distributed along the circumference, the inner cylinder including a plurality of inner cylinder ribs evenly distributed along the circumference, the inner cylinder ribs being adapted to the outer cylinder slots, the upper ends of the inner cylinder ribs being connected and fixed by upper connecting rings, and the lower ends being connected and fixed by lower connecting rings; the inner cylinder ribs being inserted into the outer cylinder slots so that the inner cylinder is coupled to the outer cylinder, and the gap between the inner cylinder ribs and the side walls of the outer cylinder slots forms a filter hole for the juice to pass through; the lower surface of the inner wall of the upper connecting ring is an inclined surface, and a plurality of upper shearing blades are evenly distributed along the circumference on the inclined surface, the upper shearing blades being extended radially and matched with the lower shearing blades for cutting off coarse fiber materials.

9. The juice extraction device according to claim 8, characterized in that: The lower surface of the inner wall of the upper connecting ring is an inclined surface, and the upper shearing edge is arranged on the inclined surface.

10. The juice extraction device according to claim 6, characterized in that: The outer cylinder is integrally formed at the lower part of the feeding cylinder.

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