A fruit and vegetable juice processing device integrating juicing and separation

Abstract

The application discloses a fruit and vegetable juice processing device integrating juice extraction and separation, and belongs to the technical field of food processing machines, which comprises a rack, a feeding mechanism arranged on the rack, a squeezing mechanism arranged below the feeding mechanism, and a filterless cyclone separation mechanism arranged below the squeezing mechanism. The filterless cyclone centrifugal separation mechanism is adopted to separate juice and fruit residue by high-speed cyclone centrifugal force, so that filter clogging is avoided and cleaning is simplified. The combination of an outer corrugated elastic sleeve and three-section staggered discontinuous spiral blades realizes self-adaptive squeezing, the wave-shaped sleeve wall thickness produces hard-soft alternating deformation, hard materials are broken under high pressure, soft materials are flexibly squeezed, and the juice yield is improved. Periodic scraping vibration is formed between the grooves and protrusions on the outer edge of the spiral blade and the spiral convex edges on the inner wall of the sleeve, fruit residue is automatically stripped, continuous processing of high-fiber materials is realized, and no residue is left. The whole machine is modularly designed and can be quickly disassembled and washed, so that maintenance is convenient. Oxidation browning is inhibited by a closed process and liquid film isolation, and original color and flavor are preserved.

Description

Technical Field

[0001] This invention relates to the field of food processing machinery technology, and in particular to a fruit and vegetable juice processing device that integrates juicing and separation. Background Technology

[0002] Traditional fruit and vegetable juicing equipment is mainly divided into two categories: centrifugal and screw extrusion. In addition, belt juicers and wrap-around juicers are also commonly used in large-scale industrial production.

[0003] Centrifugal juicers use high-speed rotating blades to chop fruits and vegetables and then use centrifugal force to force the juice through a filter. Their disadvantages include high speed, high noise levels, easy oxidation and separation of the juice, and the filter easily becoming clogged by small fruit particles, requiring frequent shutdowns for cleaning.

[0004] Screw juicers (slow juicers) use a low-speed screw shaft in conjunction with a filter cylinder to extract juice through compression. While the juice quality is relatively high, they still have the following drawbacks: 1. Filter clogging problem: Whether it is a metal filter or a plastic filter, when squeezing high-fiber materials (such as celery and sugarcane), the fibers are easy to get tangled or clog the mesh, resulting in a sharp drop in juice yield and even burning out the motor.

[0005] 2. Poor compressibility: The gap between the rigid screw shaft and the rigid stator is fixed, making it unable to adaptively adjust the extrusion pressure for fruits and vegetables of different hardness. Hard materials (such as carrots) may not be crushed, while soft materials (such as oranges) may release too much bitter substances due to overpressure.

[0006] 3. Weak self-cleaning ability: The existing device does not have an online self-cleaning function. After processing, the filter screen must be disassembled and cleaned, which is a cumbersome process and easily leads to dirt accumulation.

[0007] 4. Complex structure: In order to achieve solid-liquid separation, it almost entirely relies on physical filters, resulting in many parts, inconvenient disassembly and assembly, and high sealing requirements.

[0008] Belt juicers use two tensioned filter belts to clamp the material, which is then pressed through a series of extrusion rollers. While suitable for large-scale, continuous production, they are bulky, have high investment costs, and also rely on filter belts as the filtration medium. Cleaning and regenerating the filter belts is difficult, and fine particles from the material easily become embedded in the belt fibers, leading to blockages and bacterial growth. Furthermore, the pressing process is highly open, with a large contact area between the material and air, resulting in significant oxidation.

[0009] Enclosed juicers load materials into filter bags or filter cloths and apply enormous pressure through hydraulic pistons to extract juice. Their disadvantages include intermittent production, low efficiency, and high labor intensity. Filter bags / filter cloths are also consumable parts that need to be frequently replaced and cleaned. Furthermore, the loading and unloading process is cumbersome, making it difficult to achieve fully enclosed automated operation. The materials are exposed to air for a longer period, which exacerbates the problem of oxidative browning.

[0010] In summary, existing juicing devices generally rely on physical filters or filter cloths for solid-liquid separation, which leads to problems such as clogging, difficulty in cleaning, poor compressibility, and severe oxidative browning caused by prolonged exposure of materials to air. Summary of the Invention

[0011] The purpose of this invention is to provide a fruit and vegetable juice processing device that integrates juicing and separation, solving the problems of existing juicing devices that are prone to clogging due to reliance on filters, have poor extrusion adaptability, are difficult to clean, and are prone to oxidative browning after the fruits and vegetables are crushed due to prolonged contact with oxygen.

[0012] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a fruit and vegetable juice processing device that integrates juicing and separation, including a frame, a feeding mechanism for receiving and pre-crushing fruits and vegetables on the frame, a squeezing mechanism below the feeding mechanism, and a filterless cyclone separation mechanism below the squeezing mechanism. The extrusion mechanism includes an outer corrugated elastic sleeve. The outer wall of the outer corrugated elastic sleeve is wavy along the axial direction, causing the wall thickness to change periodically. The inner wall of the outer corrugated elastic sleeve is provided with a spiral protrusion. A central shaft is provided inside the outer corrugated elastic sleeve. At least two discontinuous spiral blades are provided on the central shaft, which are spaced apart along the axial direction. The spiral blades are staggered from each other in the circumferential direction. The filterless cyclone separator includes a flow guide assembly installed in the outer corrugated elastic sleeve, a cyclone cavity at the outlet of the flow guide assembly, a clear juice outlet pipe at the top center of the cyclone cavity, and a fruit pomace outlet at the bottom of the cyclone cavity.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are as follows: 1. Achieved efficient solid-liquid separation without filters. By incorporating a filterless cyclone centrifugal separation mechanism, the physical filter indispensable in traditional juicers is completely eliminated. Utilizing fluid kinetic energy to generate a high-speed cyclone, the juice and pulp are automatically separated under centrifugal force, fundamentally avoiding filter clogging problems and simplifying the cleaning process.

[0014] 2. Adaptive extrusion was achieved, significantly improving juice yield. It employs a combination of an outer corrugated elastic sleeve and three staggered, discontinuous spiral blades. The sleeve's alternating rigidity and flexibility allows it to automatically adjust radial deformation according to the material's hardness—high-pressure crushing for hard materials and gentle pressing for soft materials. Combined with the "squeeze-release-re-squeeze" kneading action of the three spiral blades, it more thoroughly breaks down the cell walls of different fruits and vegetables.

[0015] 3. It achieves online self-cleaning and can work continuously for extended periods. The grooves and protrusions on the outer edge of the spiral blades form periodic elastic interference with the spiral ridges on the inner wall of the outer corrugated elastic sleeve. The protrusions scrape against the surface of the ridges, generating high-frequency micro-vibrations that automatically peel off the adhering fruit pulp; the grooves create local pressure relief zones as they pass through, assisting in the discharge of debris. This self-cleaning mechanism allows the device to continuously process high-fiber materials without mid-process disassembly and cleaning, with no significant residue accumulation on the inner wall, greatly improving continuous operation capability.

[0016] 4. It achieves modularity, easy disassembly and assembly, and easy cleaning. The whole machine adopts a modular design: the feeding mechanism, extrusion mechanism, and filterless cyclone separation mechanism are connected by flanges and quick-release clamps. All core components can be quickly disassembled, there are no dead corners of the filter, and they can be restored to cleanliness by rinsing with water, which reduces the maintenance burden on users.

[0017] 5. It inhibits oxidative browning during processing, thus improving the quality of fruit and vegetable juices. This invention employs a multi-faceted synergistic mechanism of closed-loop process, rapid continuous processing, natural liquid film isolation, and cyclone gas-liquid separation. The material remains in a relatively closed environment throughout the entire process, from feeding and pre-crushing to extrusion and separation, with extremely short contact time with air after crushing. The juice extracted during extrusion quickly coats the material surface, forming an isolation film that effectively blocks oxygen contact. During high-speed cyclone separation, air is automatically discharged, reducing the dissolved oxygen content of the juice. Optional trace amounts of inert gas can further replace the air within the device, eliminating enzymatic browning reactions at the source. As a result, the produced fruit and vegetable juices are bright in color, pure in flavor, and retain a high level of nutrients, completely solving the oxidative browning problem caused by long material exposure time and intense gas-liquid mixing in traditional juicing devices. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a front view of the fruit and vegetable juice processing device that integrates juicing and separation according to the present invention; Figure 2 This is a cross-sectional view of the fruit and vegetable juice processing device of the present invention, which integrates juicing and separation. Figure 3 This is a schematic diagram of the structure of the feeding hopper, top cover, first drive motor, rotating shaft, and rotating frame of the present invention; Figure 4This is a schematic diagram of the structure of the first cutter roller, the second cutter roller, and the differential transmission assembly of the present invention; Figure 5 for Figure 2 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the structure of the guide vane of the present invention.

[0020] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Feed hopper; 3. Top cover; 4. First drive motor; 5. Rotating shaft; 6. Pre-crushing box; 7. First cutter roller; 8. Second cutter roller; 9. First gear; 10. Second gear; 11. Third gear; 12. Fourth gear; 13. Second drive motor; 14. Outer corrugated elastic sleeve; 15. Central shaft; 16. Spiral blade; 1601. Groove; 1602. Protrusion; 17. Spiral ridge; 18. Guide box; 19. Guide blade; 20. Swirl cavity; 2001. Cylindrical section; 2002. Conical section; 21. Clear juice outlet pipe; 22. Fruit pomace outlet; 23. First bevel gear; 24. Second bevel gear; 25. Connecting shaft; 26. Third drive motor; 27. Rotating frame. Detailed Implementation

[0021] like Figure 1-6 As shown, a fruit and vegetable juice processing device integrating juicing and separation includes a frame 1, which serves as the supporting foundation for the entire device. The frame 1 is made of stainless steel square tubing and has vibration damping pads installed at the bottom. The frame 1 is equipped with a feeding mechanism for receiving and pre-crushing fruits and vegetables. Below the feeding mechanism is a pressing mechanism, and below the pressing mechanism is a filterless cyclone separation mechanism.

[0022] The feeding mechanism includes a feeding hopper 2, which is a cone shape with a larger top and a smaller bottom, and has vertical guide ribs on its inner wall; a top cover 3 is hinged to the top of the feeding hopper 2, and a rotating frame 27 is installed on the top cover 3; a first drive motor 4 is installed on the rear side of the feeding hopper 2, and a rotating shaft 5 is connected to the output shaft of the first drive motor 4 through a coupling. The rotating shaft 5 is connected to the rotating frame 27 and is used to drive the top cover 3 to open and close automatically.

[0023] A pre-crushing box 6 is connected to the bottom of the feed hopper 2, and the pre-crushing box 6 is sealed and connected to the bottom opening of the feed hopper 2. The first cutter roller 7 and the second cutter roller 8 are installed in parallel inside the pre-crushing box 6 through bearings. The second drive motor 13 and the differential transmission assembly are installed outside the pre-crushing box 6. The output shaft of the second drive motor 13 is directly connected to the shaft end of the first cutter roller 7 through a coupling.

[0024] The differential transmission assembly includes a first gear 9, a second gear 10, a third gear 11, and a fourth gear 12. The first gear 9 is mounted on the shaft end of the first cutter roller 7, and the second gear 10 is mounted on the shaft end of the second cutter roller 8. The third gear 11 and the fourth gear 12 are mounted on the outer wall of the pre-crushing box 6 through bearing seats. The third gear 11 and the fourth gear 12 mesh with each other. The third gear 11 meshes with the first gear 9, and the fourth gear 12 meshes with the second gear 10. Through the above gear meshing relationship, the first gear 9 and the second gear 10 rotate in opposite directions. Since the gear ratio of the first gear 9 and the second gear 10 is not equal to 1, the first cutter roller 7 and the second cutter roller 8 rotate inward at different speeds.

[0025] A compression mechanism is fixedly connected to the bottom of the pre-crushing box 6. The compression mechanism includes an outer corrugated elastic sleeve 14. The upper end of the outer corrugated elastic sleeve 14 is sealed to the outlet of the pre-crushing box 6 through an upper flange, and the lower end is connected to subsequent components through a lower flange. A food-grade silicone O-ring is provided at the flange connection. The outer wall of the outer corrugated elastic sleeve 14 is wavy along the axial direction to make the wall thickness change periodically. The inner wall of the outer corrugated elastic sleeve 14 has a spiral protrusion 17 integrally formed. A central shaft 15 is coaxially installed inside the outer corrugated elastic sleeve 14. At least two discontinuous spiral blades 16 are connected to the central shaft 15 and are arranged at intervals along the axial direction. Each spiral blade 16 is staggered in the circumferential direction. Specifically, the spiral blades 16 are three staggered discontinuous spiral structures. The axial length of each spiral blade 16 is equal, and there is an axial gap between the segments. The starting phase angle of two adjacent spiral blades 16 differs by 120°. The outer edge surface of the spiral blade 16 is alternately provided with grooves 1601 and protrusions 1602 along the spiral direction, wherein the grooves 1601 are semi-circular grooves and the protrusions 1602 are radial micro-serrations.

[0026] A drive assembly is provided at the top of the central shaft 15. The drive assembly includes a first bevel gear 23 mounted on the central shaft 15. A third drive motor 26 is mounted on the outside of the outer corrugated elastic sleeve 14. The output end of the third drive motor 26 is connected to a connecting shaft 25 via a coupling. A second bevel gear 24 that meshes with the first bevel gear 23 is mounted on the connecting shaft 25. Through the aforementioned bevel gear transmission, the third drive motor 26 drives the central shaft 15 to rotate.

[0027] When the third drive motor 26 drives the central shaft 15 to rotate through the first bevel gear 23 and the second bevel gear 24, the three staggered discontinuous spiral blades 16 on the central shaft 15 rotate accordingly. Because the outer wall of the outer corrugated elastic sleeve 14 is wavy and its wall thickness changes alternately along the axial direction, the sleeve has uneven stiffness in the radial direction: the stiffness is high at the crest (thick wall) and the flexibility is high at the trough (thin wall). When the material is pushed by the spiral blades 16, in the flexible section, the material pressure will cause the sleeve to expand outward, forming a local expansion zone. In the rigid section, the sleeve maintains its shape and generates high-pressure extrusion. This "alternating stiffness and flexibility" structure realizes adaptive extrusion - generating high pressure for hard materials and flexible pressing for soft materials. Meanwhile, the grooves 1601 and protrusions 1602 on the outer edge of the spiral blade 16 form periodic interference with the spiral ridges 17 on the inner wall of the outer corrugated elastic sleeve 14: the protrusions 1602 scrape the spiral ridges 17 with a large amount of interference, generating high-frequency micro-vibrations and peeling off the adhering fruit residue; when the grooves 1601 pass by, they release pressure, forming a "squeeze-release-inhale" cycle, promoting the flow of juice.

[0028] A filterless cyclone separation mechanism is fixedly connected to the lower end of the outer corrugated elastic sleeve 14. The filterless cyclone separation mechanism includes a flow guiding component disposed on the outer corrugated elastic sleeve 14, a cyclone cavity 20 disposed at the outlet of the flow guiding component, a clear juice outlet pipe 21 disposed at the top center of the cyclone cavity 20, and a fruit pulp outlet 22 disposed at the bottom of the cyclone cavity 20.

[0029] The flow guiding assembly includes a flow guiding box 18, which is configured as an inverted frustum shape. Its upper end is sealed to the lower flange of the outer corrugated elastic sleeve 14. The interior of the flow guiding box 18 is provided with spiral flow guiding blades 19. The spiral direction of the flow guiding blades 19 matches the rotation direction of the central shaft 15, which is used to smoothly change the direction of the incoming flow. The lower part of the side wall of the flow guiding box 18 is provided with a discharge port. The discharge port is rectangular and communicates with the vortex cavity 20.

[0030] The swirl chamber 20 includes a cylindrical section 2001 and a conical section 2002 connected in sequence. The top of the cylindrical section 2001 is provided with a tangential inlet, which is sealed and connected to the outlet. The tangential inlet is located at the upper part of the cylindrical section 2001. The inlet channel is rectangular and the cross-sectional area gradually decreases along the flow direction to form a tapered nozzle. A clear juice outlet pipe 21 is connected to the center of the top of the cylindrical section 2001. The lower end of the clear juice outlet pipe 21 extends into the cylindrical section 2001, and a foam-blocking cap is fixedly connected to its lower end. The foam-blocking cap is umbrella-shaped. The bottom of the conical section 2002 is connected to a fruit pomace outlet 22, and a discharge valve is installed on the fruit pomace outlet 22.

[0031] The squeezed mixture (juice + fine fruit pomace) enters the guide box 18 from the lower end of the outer corrugated elastic sleeve 14. After being smoothly turned by the spiral guide vanes 19, it is injected at high speed into the cylindrical section 2001 of the vortex chamber 20 through the tangential inlet. Since the inlet is a tapered nozzle, the mixture enters at a tangential velocity, forming a high-speed rotating forced vortex within the cylindrical section 2001. Under the action of centrifugal force, the denser fruit pomace particles are thrown towards the inner wall of the chamber and move downwards along the spiral guide grooves on the inner wall. After being concentrated by the conical section 2002, they are discharged from the fruit pomace outlet 22 at the bottom. The less dense clear juice moves towards the central low-pressure zone, flows upwards, and after being rectified by the foam deflector, enters the clear juice outlet pipe 21 and is finally collected. The entire separation process does not require any filter screen or sieve cylinder and relies entirely on the principle of fluid dynamics to achieve solid-liquid separation.

[0032] In addition, the first drive motor 4, the second drive motor 13 and the third drive motor 26 are all independently controlled speed-regulating motors, which are electrically connected to the controller and can adjust the speed of each motor according to different types of fruits and vegetables.

[0033] The working process of this invention is as follows: Phase 1: Feeding and Pre-crushing Start the first drive motor 4, and the top cover 3 will automatically open under the drive of the rotating frame 27; put the fruits and vegetables to be processed (such as apples, carrots, celery, etc.) into the feed hopper 2, close the top cover 3, and start the second drive motor 13; the second drive motor 13 drives the first cutter roller 7 to rotate, and the first cutter roller 7 drives the second cutter roller 8 to rotate in opposite directions and at different speeds through the differential transmission component; the fruits and vegetables fall into the feed hopper 2 by gravity and enter the pre-crushing box 6, where they are cut into small pieces by the two differentially rotating cutter rollers.

[0034] Phase Two: Dynamic Extrusion and Self-Cleaning The pre-crushed material enters the outer corrugated elastic sleeve 14. The third drive motor 26 drives the central shaft 15 to rotate. The three staggered discontinuous spiral blades 16 push the material downward. The material is squeezed between the spiral blades 16 and the outer corrugated elastic sleeve 14: the rigid section generates high pressure to break the cell wall, and the flexible section adapts to deformation to achieve flexible pressing; the protrusions 1602 on the outer edge of the spiral blades 16 and the spiral ridges 17 on the inner wall of the sleeve generate scraping vibration, automatically peeling off the adhering fruit residue; when the grooves 1601 pass through, the pressure is released, forming a "sucking" effect to promote the flow of juice; because the spiral blades 16 are discontinuous, the material rolls and rubs in the gaps between the sections, further damaging the fiber cell walls; the squeezed mixture (juice + fine fruit residue) is discharged from the lower end of the sleeve.

[0035] Third stage: Cyclone separation The mixture enters the guide box 18 and is smoothly redirected by the spiral guide vanes 19. The mixture is then injected at high speed from the tangentially converging nozzle into the cylindrical section 2001 of the vortex chamber 20, forming a high-speed rotating vortex. The fruit pomace, under centrifugal force, adheres to the wall and moves downwards along the inner spiral guide groove. After being concentrated by the conical section 2002, it is discharged from the fruit pomace outlet 22 and falls into the fruit pomace collection box. The clarified juice converges towards the center, flows upwards, passes through the foam deflector cap, and enters the clarified juice outlet pipe 21 for collection. The entire separation process is continuous, with no risk of filter clogging.

[0036] Phase 4: Continuous Operation and Cleaning The device can continuously feed materials, enabling uninterrupted juicing and separation. After processing, the outer corrugated elastic sleeve 14, central shaft 15, and guide box 18 can be disassembled and rinsed with water; no filter screen is required for separate cleaning.

[0037] As an important improvement of this invention, the overall structure and process design of this device fully consider the need to inhibit the oxidative browning of fruit and vegetable juices.

[0038] First, the process is designed as a closed system. From the top cover 3 of the feed hopper 2, to the pre-crushing box 6, then to the outer corrugated elastic sleeve 14 and the subsequent guide box 18 and cyclone chamber 20, the entire juicing and separation process takes place in a relatively closed environment. The automatic opening and closing design of the top cover 3 reduces air exchange during material input, while the continuous spiral extrusion conveyor avoids material exposure between different components. Compared with the open pressing of traditional belt or wrap-around juicing systems, this device greatly shortens the contact time and contact area between the crushed material and the outside air.

[0039] Secondly, it enables rapid and continuous processing. This device achieves rapid conversion from blocky fruits and vegetables to a solid-liquid mixture through differential pre-crushing by the first cutter roller 7 and the second cutter roller 8, and continuous spiral extrusion driven by the central shaft 15. The material has an extremely short residence time in the pre-crushing chamber 6, and then immediately enters the extrusion section filled with juice. In the extrusion section, the surface of the material is quickly coated with the squeezed juice, forming a natural "liquid film" that effectively isolates oxygen.

[0040] Furthermore, gas-liquid interface control is implemented. In the final filterless cyclone separation stage, the mixture enters the cyclone chamber 20 at high speed tangentially, forming a stable forced vortex. During this process, air is automatically driven towards the low-pressure zone at the center of the cyclone chamber 20 and separated by the foam-blocking cap structure above the clarified juice outlet pipe 21. Most of the air, along with a small amount of foam, is discharged from the upper part of the clarified juice outlet pipe 21, while the main juice flows out smoothly under the guidance of the umbrella-shaped foam-blocking cap, avoiding splashing and violent mixing with air. This design reduces the dissolved oxygen content in the juice.

[0041] As a further optimization, a miniature air inlet can be installed on the side wall of the top cover 3 or the pre-crushing chamber 6, connected to a nitrogen or carbon dioxide gas source. After the device is started and before the fruits and vegetables are added, a small amount of inert gas is introduced to quickly replace the air inside the device, creating a near-oxygen-free processing environment, thereby completely eliminating the occurrence of enzymatic browning reactions at the source. This gas source can be provided by a miniature gas cylinder or a small gas generator, with a controllable flow rate.

[0042] This invention effectively solves the oxidative browning problem commonly found in traditional juicing devices through a multi-synergistic mechanism of "closed environment, rapid processing, liquid membrane isolation, and gas-liquid separation," resulting in fruit and vegetable juices with bright color, pure flavor, and high nutrient retention.

[0043] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A fruit and vegetable juice processing device integrating juicing and separation, characterized in that: Includes a frame (1), on which a feeding mechanism for receiving and pre-crushing fruits and vegetables is provided, and a pressing mechanism is provided below the feeding mechanism, and a filterless cyclone separation mechanism is provided below the pressing mechanism. The extrusion mechanism includes an outer corrugated elastic sleeve (14), the outer wall of which is wavy along the axial direction to make the wall thickness change periodically, and the inner wall of which is provided with a spiral protrusion (17); a central shaft (15) is provided inside the outer corrugated elastic sleeve (14), and at least two discontinuous spiral blades (16) are provided on the central shaft (15) at intervals along the axial direction, and the spiral blades (16) are staggered from each other in the circumferential direction. The filterless cyclone separator includes a flow guide assembly disposed on the outer corrugated elastic sleeve (14), a cyclone cavity (20) is disposed at the outlet of the flow guide assembly, a clear juice outlet pipe (21) is disposed at the top center of the cyclone cavity (20), and a fruit residue outlet (22) is disposed at the bottom of the cyclone cavity (20).

2. The fruit and vegetable juice processing device integrating juicing and separation according to claim 1, characterized in that: The feeding mechanism includes a feeding hopper (2), and a pre-crushing box (6) is provided below the feeding hopper (2). A first cutter roller (7) and a second cutter roller (8) are arranged in parallel inside the pre-crushing box (6). A second drive motor (13) and a differential transmission assembly are provided outside the pre-crushing box (6). The second drive motor (13) is connected to the first cutter roller (7).

3. The fruit and vegetable juice processing device integrating juicing and separation according to claim 2, characterized in that: The differential transmission assembly includes a first gear (9), a second gear (10), a third gear (11), and a fourth gear (12). The first gear (9) is disposed on the shaft end of the first cutter roller (7), the second gear (10) is disposed on the shaft end of the second cutter roller (8), the third gear (11) and the fourth gear (12) are disposed on the outer wall of the pre-crushing box (6), the third gear (11) and the fourth gear (12) mesh with each other, the third gear (11) meshes with the first gear (9), and the fourth gear (12) meshes with the second gear (10), so that the first gear (9) and the second gear (10) rotate in opposite directions and the gear ratio is not equal to 1.

4. The fruit and vegetable juice processing device integrating juicing and separation according to claim 2, characterized in that: The top of the feed hopper (2) is provided with a top cover (3), and a rotating frame (27) is provided on the top cover (3). A first drive motor (4) is provided on the rear side of the feed hopper (2), and a rotating shaft (5) is provided on the output shaft of the first drive motor (4). The rotating shaft (5) is connected to the rotating frame (27).

5. The fruit and vegetable juice processing device integrating juicing and separation according to claim 1, characterized in that: The helical blade (16) consists of three segments, each segment of which has the same axial length and the starting phase angle of two adjacent segments of the helical blade (16) differs by 120°.

6. The fruit and vegetable juice processing device integrating juicing and separation according to claim 1, characterized in that: The outer edge surface of the spiral blade (16) is alternately provided with grooves (1601) and protrusions (1602) along the spiral direction.

7. The fruit and vegetable juice processing device integrating juicing and separation according to claim 1, characterized in that: A drive assembly is provided at the top of the central shaft (15). The drive assembly includes a first bevel gear (23) disposed on the central shaft (15). A third drive motor (26) is disposed on the outer side of the outer corrugated elastic sleeve (14). A connecting shaft (25) is provided at the output end of the third drive motor (26). A second bevel gear (24) that meshes with the first bevel gear (23) is disposed on the connecting shaft (25).

8. The fruit and vegetable juice processing device integrating juicing and separation according to claim 1, characterized in that: The flow guiding assembly includes a flow guiding box (18), which is configured as an inverted frustum shape. The interior of the flow guiding box (18) is provided with spiral flow guiding blades (19). The lower part of the side wall of the flow guiding box (18) is provided with a discharge port, which is connected to the vortex cavity (20).

9. The fruit and vegetable juice processing device integrating juicing and separation according to claim 8, characterized in that: The swirling cavity (20) includes a cylindrical section (2001) and a conical section (2002) connected in sequence. The top of the cylindrical section (2001) is provided with a tangential inlet, which is connected to the discharge port. The clear juice outlet pipe (21) is provided at the center of the top of the cylindrical section (2001), and the bottom of the conical section (2002) is provided with the fruit residue outlet (22).

10. The fruit and vegetable juice processing device integrating juicing and separation according to claim 9, characterized in that: The tangential inlet is located at the upper part of the cylindrical section (2001), and the inlet channel is rectangular with a cross-sectional area that gradually decreases along the flow direction, forming a converging nozzle.

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