Broken fruit conveying device

Abstract

The invention discloses a broken fruit conveying device, and belongs to the field of agricultural and sideline food processing machinery. According to the technical scheme, the conveying device for the crushed fruits comprises a frame body, a juicing mechanism is arranged on the frame body, a feeding end and a discharging end are arranged at the two ends of the juicing mechanism respectively, a juice collecting assembly is arranged at the lower end of the middle of the juicing mechanism, a crushing bin is arranged at the feeding end, and a rotary crushing assembly is arranged in the crushing bin; the device further comprises a gas-liquid mixing mechanism, a regulator storage tank and a nitrogen storage tank; nitrogen or a conditioning agent is introduced into the crushing bin, the juicing mechanism and the juice collecting assembly through the gas-liquid mixing mechanism, uniform gas distribution is achieved in cooperation with an atomization nozzle, oxidation browning and microbial contamination are effectively inhibited in combination with real-time regulation and control of the oxygen concentration and the PH value, and the device has the advantages that the color stability of fruit juice is improved, and the shelf life is prolonged.

Description

Technical Field

[0001] The present invention belongs to the field of agricultural and sideline food processing machinery, and particularly relates to a conveying device for crushing fruits. Background Art

[0002] During the fruit processing, crushing and juicing are the key links affecting the quality of the final product. Although traditional crushing equipment can quickly crush the pulp under the action of high-speed rotating blades, during the crushing process, the fruit tissue is exposed to the air, and cell walls rupture, releasing enzyme substances such as polyphenol oxidase (PPO). After contacting with oxygen, it is extremely easy to trigger enzymatic browning reactions, resulting in dull color of the juice and a large loss of heat-sensitive nutrients such as vitamin C. In addition, the open crushing environment is prone to the growth of aerobic microorganisms (such as molds and yeasts), accelerating the spoilage of the juice and shortening the shelf life. Especially for fruits with high sugar content or low acidity (such as apples, pears, etc.), the problem of oxygen-mediated oxidative deterioration is more significant.

[0003] In the prior art, physical oxygen isolation (such as vacuum crushing) or adding antioxidants (such as ascorbic acid) is often used to alleviate the oxidation problem. However, vacuum equipment is costly and has low processing efficiency, while chemical additives may change the natural flavor of the juice and face the consumers' demand for "clean label". Some equipment attempts to introduce inert gas (such as nitrogen) into the crushing chamber to displace oxygen, but the traditional gas introduction method has problems such as uneven distribution and residual oxygen in dead corners, and lacks continuous oxygen control protection for subsequent processes such as juicing and juice collection after crushing, resulting in the continuous accumulation of oxidation risk in the processing chain.

[0004] Based on this, there is an urgent need to develop a conveying device integrating crushing, juicing and dynamic oxygen control, which forms a low-oxygen microenvironment through an efficient gas-liquid mixing mechanism at the initial stage of crushing and runs through subsequent processing links, and synergistically adjusts the pH value to inhibit enzyme activity and microbial proliferation, so as to systematically improve the quality and safety of the juice. Through the innovative design of the atomizing nozzle structure and the gas-liquid supply system, combined with real-time oxygen concentration and pH monitoring feedback, the present invention realizes precise oxygen control and antibacterial in the whole process of crushing and juicing, providing a reliable solution for high-quality juice processing. In view of the above problems, the prior art needs to be improved. Summary of the Invention

[0005] The present invention provides a conveying device for crushing fruits to solve at least one of the above technical problems.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A conveying device for crushing fruits, comprising a frame body, on which a juice extraction mechanism is provided. At both ends of the juice extraction mechanism, a feeding end and a discharging end are respectively provided. At the lower end of the middle part of the juice extraction mechanism, a juice collection assembly is provided. On the feeding end, a crushing bin is provided, and a rotary crushing assembly is arranged in the crushing bin; it further includes a gas-liquid mixing mechanism, a regulator storage tank, and a nitrogen storage tank. The gas-liquid mixing mechanism is used to extract the regulator in the regulator storage tank and / or the nitrogen in the nitrogen storage tank and introduce them into the crushing bin, the juice extraction mechanism, and the juice collection assembly. A sealing cover is provided on the crushing bin, and two rows of atomizing nozzles are symmetrically arranged in the crushing bin. The output ends of the gas-liquid mixing mechanism are respectively connected to the two groups of atomizing nozzles.

[0008] Further, the present application also proposes that flow control units are respectively provided between the regulator storage tank, the nitrogen storage tank and the gas-liquid mixing mechanism. It also includes a control mechanism, an oxygen concentration monitoring mechanism, and a PH monitoring mechanism. The oxygen concentration monitoring mechanism is used to monitor the oxygen content in the crushing bin, the juice extraction mechanism, and the juice collection assembly. The PH monitoring mechanism is used to monitor the PH value of the environment in the crushing bin, the juice extraction mechanism, and the juice collection assembly. The control mechanism controls the flow control unit to adjust the input amounts of nitrogen and the regulator according to the monitoring data of the oxygen concentration monitoring mechanism and the PH monitoring mechanism.

[0009] Further, the present application also proposes that the atomizing nozzle includes a plurality of liquid spraying ports arranged at intervals in the horizontal direction. The cross-section of the liquid spraying port first contracts and then expands along the flow direction of the medium. A plurality of grooves are provided on the inner wall of the liquid spraying port. The shape of the liquid spraying port is non-circular, and a plurality of flow disturbing sawteeth are circumferentially arranged at intervals at the outer end of the liquid spraying port.

[0010] Further, the present application also proposes that the rotary crushing assembly includes a first rotating shaft rotatably connected in the crushing bin. A rotating roller is provided on the first rotating shaft, and a plurality of blades are arranged at intervals on the outer wall of the rotating roller.

[0011] Further, the present application also proposes that the first rotating shaft has an extension end that penetrates the crushing bin and extends to both ends of the crushing bin. The gas-liquid mixing mechanism includes a cylinder body, in which a piston is slidably connected. The upper end of the piston is hinged with a push rod. A crank is provided on one of the extension ends of the first rotating shaft. The outer side of the crank is hinged with the end of the push rod away from the piston. A first intake pipe and a second intake pipe are respectively connected between the cylinder body and the regulator storage tank and the nitrogen storage tank. One-way valves and flow control valves are provided on both the first intake pipe and the second intake pipe. Exhaust pipes are respectively provided between the cylinder body and the atomizing nozzles, the juice extraction mechanism, and the juice collection assembly. One-way valves are provided on the exhaust pipes.

[0012] Further, the present application also proposes that the juice extraction mechanism includes a juice extraction chamber, in which a second rotating shaft is rotatably connected. The second rotating shaft is connected and driven to the first rotating shaft through a linkage assembly. A filter cylinder is provided in the juice extraction chamber. The circumferential direction of the filter cylinder is densely distributed with mesh holes. The second rotating shaft is located inside the filter cylinder. The first rotating shaft is axially spaced with a first juice extraction roller and a second juice extraction roller. The diameter of the first juice extraction roller is smaller than that of the second juice extraction roller. The axial direction of the second rotating shaft, the first juice extraction roller and the second juice extraction roller is provided with continuous spiral feeding blades. A diversion channel for guiding the juice into the juice collection assembly is provided between the filter cylinder and the inner wall of the juice extraction chamber.

[0013] Further, the present application also proposes that the juice extraction mechanism further includes a pressing head located at the discharge end of the juice extraction chamber. An extrusion channel is provided between the pressing head and the discharge port of the juice extraction chamber. A collection box is provided at the bottom of the frame body. The collection box is located directly below the extrusion channel.

[0014] Further, the present application also proposes that the juice collection assembly includes a collection tank. A drain pipe is provided at the bottom of the collection tank. The exhaust pipe is connected to the inner cavity of the collection tank from the bottom of the collection tank.

[0015] Further, the present application also proposes that the linkage assembly includes a second pulley and a third pulley provided at the end of the first rotating shaft. A fourth pulley is provided at the end of the second rotating shaft. A second transmission belt is connected between the third pulley and the fourth pulley. It further includes a driving motor. A first pulley is provided at the output end of the driving motor. A first transmission belt is connected between the first pulley and the second pulley.

[0016] Further, the present application also proposes that a number of groups of sterilization lamps are provided in the juice extraction chamber. The number of groups of sterilization lamps are arranged at intervals along the circumferential direction of the filter cylinder.

[0017] Due to the adoption of the above technical solutions, the beneficial effects obtained by the present invention are as follows:

[0018] 1. After the fruit raw materials enter the crushing chamber, the sealing cover is closed to form a closed space. The rotary crushing assembly mechanically crushes the materials. At this time, the gas-liquid mixing mechanism is started synchronously. Nitrogen and the regulator are extracted according to the preset ratio. The mixed medium is transported through the pipeline to two rows of atomizing nozzles arranged symmetrically, forming a gas-liquid mist curtain covering the cross-section of the crushing chamber. Nitrogen replaces the oxygen in the chamber to inhibit the enzymatic reaction. The regulator droplets adhere to the surface of the pulp to adjust the local pH value. The sealing structure maintains a positive pressure environment to prevent the infiltration of external air. The symmetrical nozzle layout eliminates the coverage blind area caused by the traditional single-side spraying. The mixed medium extends to the juice extraction mechanism and the collection assembly through the connecting pipeline, forming a continuous oxygen control environment throughout the processing chain.

[0019] This solution adopts a bilateral atomizing nozzle array and coordinates with the mechanical movement of a rotary crushing component to form a circulating flow of gas-liquid medium in the bin. The gas protection system in the prior art is independent of the juice extraction process. This solution realizes the linkage control of oxygen in multiple processes through a unified gas-liquid mixing mechanism. Conventional equipment relies on a single gas protection. This solution uses a composite of a regulator and nitrogen, which can physically isolate oxygen and chemically inhibit enzyme activity.

[0020] Through the above technical solution, this application effectively reduces the residual oxygen content in the crushing bin. The symmetrical nozzle layout ensures that the gas-liquid medium evenly covers the crushed material. The sealing structure and the continuous gas supply system maintain a stable low-oxygen state in the processing environment and inhibit the activity of polyphenol oxidase. The gas-liquid mixing supply mechanism prevents chemical additives from directly contacting the juice and retains the natural flavor of the product. The oxygen control pipeline connecting multiple processes eliminates the risk of secondary oxidation in the processing chain and improves the color stability of the juice and the retention rate of nutrients.

[0021] 2. By real-time collecting the environmental parameters of multiple work sections and regulating the flow rate shunt, the accurate matching of the gas-liquid supply volume and the processing demand is achieved. For example, when the pH value drops suddenly in the juice extraction mechanism, the system can immediately increase the flow rate of the alkaline regulator to inhibit the activity of polyphenol oxidase without interrupting the production process.

[0022] Through the above technical solution, this application can dynamically maintain a low-oxygen environment throughout the process from crushing to juice collection, effectively blocking the occurrence conditions of enzymatic browning reactions; by real-time monitoring the pH value and accurately adding the regulator, it inhibits the proliferation of microorganisms and reduces enzyme activity, thereby reducing the loss of juice nutrients and extending the shelf life. The shunt control mechanism of the gas-liquid supply volume avoids resource waste caused by differences in demand in different work sections. For example, when the crushing bin operates at a high load, nitrogen supply is prioritized, while during the juice collection stage, the focus is on regulating the pH stability to ensure that the oxygen control and antibacterial effects of each process reach the optimal level.

[0023] 3. When the cross-section of the liquid spraying port adopts a contraction-expansion structure, the flow rate of the medium increases when it flows through the contraction section and a negative pressure area is formed in the expansion section, promoting the mutual entrainment and mixing of gas and liquid. The inner wall grooves induce local vortices in the fluid during the flow of the medium, enhancing the shear force between the gas-liquid phases. The non-circular nozzle shape makes the jet form a multi-directional diffusion atomization field in the crushing bin, and the atomization areas of adjacent nozzles overlap and cover each other. The circumferential turbulence serrations divide the continuous jet at the outer edge of the nozzle into discrete small streamlets, and the turbulence generated by the serration gaps further refines the atomization particles. The synergistic effect of the above structures enables the gas-liquid mixed medium to form a uniformly dispersed atomization layer in the crushing bin, effectively eliminating local oxygen enrichment areas.

[0024] Through the optimization of the multi-stage flow channel structure, a turbulent mixing mechanism is formed inside the nozzle. The asymmetric outlet shape combined with the spoiler serration design makes the atomized particle distribution more uniform, overcoming the problems of incomplete medium coverage and insufficient mixing existing in the traditional structure.

[0025] Through the above technical solutions, the present application realizes the rapid mixing and uniform distribution of the gas-liquid medium in the crushing chamber, effectively reducing the residual oxygen concentration. The optimization of the liquid spraying port structure enhances the degree of medium turbulence and increases the contact area between the gas and liquid phases, enabling the inert gas or antioxidant solution to quickly form a protective atomized layer and inhibiting the oxidation reaction during the fruit crushing process. The secondary flow field generated by the circumferential spoiler serrations further refines the atomized particle size, ensuring that the protective medium fully penetrates into the material gaps and forms a continuous low-oxygen protection environment.

[0026] 4. Through the synergistic effect of the spaced blades and the rotating roller, both the uniformity of the crushing particle size is controlled and the rotational kinetic energy is utilized to promote the gas circulation coverage, overcoming the technical contradiction that it is difficult to balance the crushing efficiency and oxidation protection.

[0027] Through the above technical solutions, the present application realizes the synchronous progress of physical cutting and gas protection during the fruit crushing process, effectively reducing the exposed area of the pulp and forming a dynamic gas barrier, inhibiting the activity of polyphenol oxidase, and extending the color stability of the fruit juice and the retention time of nutrients.

[0028] 5. When the first rotating shaft is driven to rotate, the extension end drives the crank to make a circular motion, and the push rod generates a reciprocating linear motion under the drive of the crank, thereby pushing the piston to slide in the cylinder body. When the piston moves downward, a negative pressure is formed in the cylinder body, and the media in the regulator storage tank and the nitrogen storage tank are sucked into the cylinder body through the one-way valve; when the piston moves upward, the media are unidirectionally transported to the atomizing nozzle and the subsequent processing area through the exhaust pipe under the action of pressure. The flow control valve can adjust the suction ratio of the two media to achieve the quantitative supply of the gas-liquid mixture. The entire process does not require an independent power source and directly uses the rotational kinetic energy of the crushing assembly to drive the gas transportation.

[0029] This solution converts the crushing kinetic energy into gas transportation power through mechanical linkage, reducing the equipment complexity while ensuring the strict synchronization of gas supply and crushing operation, and avoiding the oxygen control failure caused by excessive or insufficient gas.

[0030] Through the above technical solutions, the present application realizes the kinetic energy sharing and action synchronization of the crushing operation and gas transportation, and completes the quantitative mixing and transportation of nitrogen and the regulator under the condition of no external power input. Each rotation of the crushing assembly corresponds to a fixed stroke of gas suction and discharge, automatically matching the gas supply volume with the crushing treatment volume and effectively maintaining the stable low-oxygen state of the processing environment.

[0031] 6. The linkage component enables the rotating shafts of the crushing chamber and the juicing chamber to rotate synchronously through mechanical connection, achieving seamless connection between the crushing and juicing processes. After being processed in the crushing chamber, the material is pushed into the juicing chamber by the spiral feeding blade and undergoes progressive extrusion by the first juicing roller and the second juicing roller in sequence. The juice generated during the juicing process enters the diversion channel through the mesh holes of the filter cylinder, while the fruit residue is restricted inside the filter cylinder and continues to be pushed forward. The first juicing roller with a smaller diameter performs preliminary pressing on the loose pulp, and the second juicing roller with a larger diameter applies higher pressure to the dense material, avoiding the splashing of juice caused by sudden changes in instantaneous pressure through staged extrusion. The continuous spiral feeding blade eliminates the stagnant areas during the material transportation process, enabling the pulp to move continuously in a closed space and reducing the chance of contact with oxygen.

[0032] Through the closed juice separation environment formed by the filter cylinder and the diversion channel, this solution physically isolates the juice collection path from the fruit residue propulsion path, effectively shortening the juice exposure time. In existing equipment, there is a power connection gap between the separately driven crushing and juicing mechanisms, resulting in the material being exposed to air during the transfer process. However, the linkage drive design of this solution achieves zero-gap connection between processes, creating a continuous low-oxygen processing environment.

[0033] Through the above technical solutions, this application realizes the fully enclosed transportation of crushed pulp from extrusion to residue discharge, preventing oxygen from infiltrating midway in the processing chain. The continuous pushing function of the spiral feeding blade eliminates the local oxidation areas caused by material accumulation, and the increasing-diameter juicing roller group avoids the splashing of juice from damaging the airtight environment through progressive pressure application. The filter cylinder structure synchronously completes juice residue separation and juice diversion during the dynamic extrusion process, enabling fresh juice to quickly enter the low-oxygen collection system, significantly reducing the activity of polyphenol oxidase and inhibiting the proliferation of microorganisms.

[0034] 7. When the fruit residue after juicing is discharged from the juicing chamber, it first enters the extrusion channel formed by the extrusion head and the discharge port. As the fruit residue moves in the channel, the cross-sectional area of the channel gradually decreases, and the fruit residue is subjected to the dual mechanical pressure of the extrusion head and the chamber wall, and the residual juice inside is further extruded. The squeezed and released juice flows downward along the inner wall of the channel under the action of gravity and directly falls into the closed collection box located directly below the channel, avoiding contact with air during the dripping process of the juice.

[0035] By adding a mechanical extrusion head and a directional collection structure, this solution forms a secondary pressing area at the end of juicing, continuously increasing the pressure intensity by utilizing the space compression effect of the gradually shrinking channel, and shortening the juice collection path to the vertical dropping mode at the same time, achieving a double improvement in pressing efficiency and oxygen control effect.

[0036] Through the above technical solutions, this application solves the problem of the decrease in juice yield caused by insufficient pressing of the residual juice in the residue after juicing, and at the same time eliminates the risks of enzymatic browning and microbial contamination caused by the exposure of the juice to air during the collection process.

[0037] 8. As the juice flows into the collection tank, nitrogen or a regulator gas mixture from the gas-liquid mixing mechanism is continuously injected through the bottom exhaust pipe. This gas creates an upward flow within the liquid, pushing air from the top of the collection tank out through the drain pipe, creating an inert gas blanket. When the gas comes into contact with the juice, tiny bubbles increase the gas-liquid contact area, displacing dissolved oxygen. The drain pipe automatically opens when the juice reaches a preset level, synergizing the dynamic drop in the liquid level with the continuous replenishment of gas to maintain a constant low oxygen level within the collection tank.

[0038] This solution combines bottom aeration with dynamic drainage to allow the gas to be fully retained inside the liquid, achieving simultaneous removal of dissolved oxygen and space oxygen.

[0039] Through the above technical solution, the present application effectively blocks the contact path between juice and oxygen, inhibiting the activity of polyphenol oxidase and preventing deterioration of juice color. Simultaneously, the nitrogen environment inhibits the proliferation of aerobic microorganisms within the collection tank, ensuring the microbiological safety of the juice during temporary storage. The linked control of the drainage pipe and gas injection prevents prolonged juice accumulation and reduces the oxidation reaction time window.

[0040] 9. The sterilization lamp effectively inhibits the growth of mold and yeast during juice processing, preventing residue and juice spoilage. Sterilizing light penetrates the filter mesh, continuously irradiating the conveyed material from multiple angles, eliminating the risk of microbial proliferation. This design ensures juice safety without the need for chemical preservatives, while also preventing the damage of heat-sensitive nutrients caused by high-temperature sterilization, maintaining the juice's natural quality and flavor stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic cross-sectional structure diagram of the front view of the present invention;

[0042] Figure 2 It is a schematic cross-sectional structure diagram of a side view of the present invention;

[0043] Figure 3 For the present invention Figure 1 Enlarged view of part A;

[0044] Figure 4 This is one of the three-dimensional diagrams of a specific embodiment of the present application;

[0045] Figure 5 This is the second stereoscopic diagram of the specific implementation method of this application.

[0046] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0047] In the accompanying drawings:

[0048] 1. Frame body; 11. Driving motor; 111. First pulley; 112. First transmission belt; 12. Collection box; 2. Crushing chamber; 21. Atomizing nozzle; 22. Sealing cover; 3. First rotating shaft; 31. Second pulley; 311. Third pulley; 32. Rotating roller; 321. Blade; 33. Crank; 4. Cylinder block; 41. Piston; 42. Push rod; 43. First intake pipe; 431. Regulator storage tank; 44. Second intake pipe; 441. Nitrogen storage tank; 45. Exhaust pipe; 5. Juice extraction chamber; 51. Second rotating shaft; 52. Fourth pulley; 53. Screw feeding blade; 54. First juice extraction roller; 55. Second juice extraction roller; 56. Extrusion head; 561. Extrusion channel; 57. Filter cartridge; 58. Sterilization lamp; 6. Collection trough; 61. Drain pipe. Detailed implementation mode

[0049] In order to more clearly illustrate the overall concept of the present invention, the following will be described in detail by way of examples in conjunction with the accompanying drawings of the specification.

[0050] In the following description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited by the specific embodiments disclosed below.

[0051] In addition, in the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0052] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the descriptions referring to terms such as "embodiment", "example", "an embodiment", "example" or "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0054] Referring to Figures 1 to 5 , a conveying device for crushing fruits, including a conveying device of a frame body 1, a juice extraction mechanism is arranged on the frame body 1, a feeding end and a discharging end are respectively arranged at both ends of the juice extraction mechanism, a juice collecting assembly is arranged at the lower end of the middle part of the juice extraction mechanism, a crushing bin 2 is arranged on the feeding end, and a rotary crushing assembly is arranged in the crushing bin 2. An air-liquid mixing mechanism, a regulator storage tank 431, and a nitrogen storage tank 441 are provided. The air-liquid mixing mechanism is connected to the regulator storage tank 431 and the nitrogen storage tank 441, and the output ends are respectively connected to two rows of atomizing nozzles 21 symmetrically arranged in the crushing bin 2. The crushing bin 2 is provided with a sealing cover 22 to form a closed space.

[0055] Among them, the air-liquid mixing mechanism refers to a device that can extract liquid regulators and gaseous nitrogen for mixed transportation. Specifically, a piston 41 type mixing pump can be used to generate negative pressure by mechanical movement to suck in the medium. The atomizing nozzle 21 refers to a liquid disperser with a porous spraying structure. Specifically, a Venturi nozzle can be used to enhance the atomization effect through the design of cross-section contraction and expansion. The sealing cover 22 refers to an openable and closable component covering the top of the crushing bin 2. Specifically, a flange type sealing structure can be used to ensure airtightness through bolt fastening. The regulator storage tank 431 refers to a container for storing pH adjustment solution. Specifically, a corrosion-resistant stainless steel tank body can be used and is connected to the air-liquid mixing mechanism through a pipeline.

[0056] Specifically, after the fruit raw materials enter the crushing bin 2, the sealing cover 22 is closed to form a sealed space. The rotary crushing assembly mechanically crushes the materials. At this time, the air-liquid mixing mechanism is started synchronously, and nitrogen and regulators are extracted according to the preset ratio. The mixed medium is transported through the pipeline to two rows of atomizing nozzles 21 arranged symmetrically, forming an air-liquid mist curtain covering the cross-section of the crushing bin 2. Nitrogen replaces the oxygen in the bin to inhibit enzymatic reactions, and the regulator droplets adhere to the surface of the pulp to adjust the local pH value. The sealing structure maintains a positive pressure environment to prevent external air from infiltrating, and the symmetrical nozzle layout eliminates the coverage blind area caused by traditional single-sided spraying. The mixed medium extends to the juice extraction mechanism and the collection assembly through the connecting pipeline, forming a continuous oxygen control environment throughout the processing chain.

[0057] Compared with the prior art, traditional equipment adopts the top single-point gas injection method, and oxygen is likely to accumulate at the bottom of the crushing bin 2 to form dead corners. This solution uses an array of double-sided atomizing nozzles 21, combined with the mechanical movement of the rotating crushing assembly, to form a circulating flow of gas-liquid medium in the bin. The gas protection system of the prior art is independent of the juicing process, and this solution realizes multi-process linkage oxygen control through a unified gas-liquid mixing mechanism. Conventional equipment relies on a single gas protection. This solution uses a composite of a regulator and nitrogen, which can not only physically isolate oxygen but also chemically inhibit enzyme activity.

[0058] Through the above technical solution, this application effectively reduces the residual oxygen content in the crushing bin 2. The symmetrical nozzle layout ensures that the gas-liquid medium evenly covers the crushed material. The sealing structure and the continuous gas supply system maintain a stable low-oxygen state in the processing environment and inhibit the activity of polyphenol oxidase. The gas-liquid mixing supply mechanism prevents chemical additives from directly contacting the juice and retains the natural flavor of the product. The oxygen control pipeline connecting multiple processes eliminates the risk of secondary oxidation in the processing chain and improves the color stability of the juice and the retention rate of nutrients.

[0059] In addition, it is worth mentioning that the gas-liquid mixing mechanism, in cooperation with the atomizing nozzle 21, can achieve the synchronous atomizing injection of nitrogen and the regulator. The use of nitrogen turbulence improves the dispersion uniformity. The airflow disturbances generated during nitrogen injection, such as eddy currents or microbubbles, will form a natural "stirring field", making the atomized droplets of regulators such as ascorbic acid and citric acid more evenly dispersed in the pulp. The regulator coverage rate is increased from 90% of conventional spraying to more than 98%, avoiding the pH fluctuation of the pulp caused by too high or too low local concentration.

[0060] Ascorbic acid Vc is easily oxidized and inactivated in a conventional oxygen-containing environment. While injecting nitrogen, the integrated device sprays Vc, which can reduce the contact time between Vc and oxygen. In a nitrogen environment with an oxygen concentration ≤ 1%, the half-life of Vc is extended by 3-5 times, from 2 hours to 6-10 hours. After the nitrogen environment inhibits microbial activities, the amount of citric acid can be reduced from 0.3% to 0.2%, while maintaining the same pH adjustment effect, achieving cost reduction and efficiency improvement.

[0061] The microbubbles generated by nitrogen injection form an "air cushion effect" in the pulp, reducing the shear force of the conveying pump on the pulp and retaining more intact cell structures. For example, the retention rate of the granularity of mango pulp is increased by 30%, effectively improving the taste.

[0062] The present application further proposes setting a flow control unit between the regulator storage tank 431, the nitrogen storage tank 441 and the gas-liquid mixing mechanism, and configuring a control mechanism, an oxygen concentration monitoring mechanism and a pH monitoring mechanism. The oxygen concentration monitoring mechanism is used to obtain the oxygen content data inside the crushing bin 2, the juice extraction mechanism and the juice collection component, and the pH monitoring mechanism is used to obtain the pH data of the corresponding area. The control mechanism controls the flow control unit to adjust the amount of nitrogen and regulator introduced according to the two types of data.

[0063] Among them, the flow control unit refers to a device that controls the flow of the medium by adjusting the cross-sectional area of the fluid channel or driving pressure. Specifically, it can be implemented by a proportional control valve or mass flow controller. Its function is to dynamically adjust the supply ratio of inert gas and chemical reagents according to environmental parameters. The control mechanism refers to an electronic module with data processing and logical judgment functions. Specifically, it can be implemented by a PLC or embedded microprocessor. It is used to convert sensor signals into control instructions and output them to the execution unit. The oxygen concentration monitoring mechanism refers to a device that detects the volume fraction of oxygen in the gas based on electrochemical or optical principles. Specifically, it can use a zirconium oxide sensor or laser absorption spectrometer to quantify the oxygen concentration level inside the equipment in real time. The pH monitoring mechanism refers to a detection device that measures the pH of liquids or humid environments. Specifically, it can use a glass electrode sensor or ion-sensitive field-effect transistor to capture the changing trend of pH value during juice processing.

[0064] Specifically, when the crushing bin 2 completes fruit crushing, the oxygen concentration monitoring mechanism continuously collects its internal oxygen concentration data. When the detection value is higher than the set threshold, the control mechanism instructs the flow control unit to increase the nitrogen intake to replace the residual air. At the same time, the pH monitoring mechanism tracks the pH of the juice in the juicing mechanism in real time. If it is detected that the pH value deviates from the preset range, the control mechanism will proportionally adjust the output flow of the regulator storage tank 431 to maintain the target pH value. During the juice collection stage, the oxygen concentration monitoring data and the pH data are synchronously transmitted to the control mechanism, and the system adjusts the gas-liquid mixing ratio in conjunction with the environmental parameters in the collection tank 6. The supply paths of nitrogen and regulator adopt a branch independent control mode. For example, when the oxygen concentration in the crushing bin 2 rises abnormally, only the flow compensation of the nitrogen pipeline is triggered, and when the pH value of the juicing mechanism fluctuates, only the regulator injection amount is adjusted to avoid cross interference.

[0065] Compared with the prior art, the gas supply of traditional equipment needs to be manually preset and cannot be dynamically adjusted according to the processing state, resulting in incomplete oxygen replacement or waste of inert gas. In the prior art, the addition of regulators mostly relies on empirical estimation and lacks closed-loop feedback with the pH value, which is likely to cause local excess or insufficient neutralization. This solution realizes the precise matching of gas-liquid supply and processing requirements through real-time collection of environmental parameters in multiple sections and flow shunt control. For example, when the pH value drops suddenly in the juice extraction mechanism, the system can immediately increase the flow rate of the alkaline regulator to inhibit the activity of polyphenol oxidase without interrupting the production process.

[0066] Through the above technical solution, this application can dynamically maintain a low-oxygen environment throughout the whole process from crushing to juice collection, effectively blocking the occurrence conditions of enzymatic browning reaction; through real-time monitoring of the pH value and precise dosing of regulators, it inhibits the proliferation of microorganisms and reduces the enzyme activity, thereby reducing the loss of juice nutrients and extending the shelf life. The shunt control mechanism of the gas-liquid supply avoids resource waste caused by differences in requirements in different sections. For example, when the crushing bin 2 operates at a high load, nitrogen supply is prioritized, while in the juice collection stage, the focus is on pH stability adjustment to ensure that the oxygen control and antibacterial effects of each process reach the optimal level.

[0067] This application further proposes that the atomizing nozzle 21 includes a plurality of liquid spraying ports arranged at intervals in the horizontal direction. The cross-section of the liquid spraying port first contracts and then expands along the medium flow direction. A plurality of grooves are provided on the inner wall of the liquid spraying port. The shape of the liquid spraying port is non-circular, and a plurality of flow disturbance sawteeth are circumferentially arranged at intervals at the outer end of the liquid spraying port.

[0068] Among them, the liquid spraying ports arranged at intervals in the horizontal direction mean that multiple liquid spraying ports are arranged at a fixed interval along the axis direction of the nozzle, and specifically, an equidistant distribution method can be adopted to reduce the spraying blind area by expanding the medium coverage area. The cross-section of the liquid spraying port first contracts and then expands along the medium flow direction means that the internal channel of the liquid spraying port adopts a Venturi tube structure, and specifically, it can be realized through a stepped variable diameter or arc-shaped transition flow channel design to enhance the mixing effect by using the change in flow velocity. The plurality of grooves provided on the inner wall of the liquid spraying port refer to grooves extending along the medium flow direction, and specifically, a spiral or wavy arrangement method can be adopted to disrupt the laminar flow state by increasing the roughness of the inner wall of the flow channel. The shape of the liquid spraying port being non-circular means that the outlet cross-section of the liquid spraying port adopts a polygonal or special-shaped structure, and specifically, it can be designed as a star shape or a serrated ring shape to change the jet diffusion trajectory through an asymmetric outlet shape. The plurality of flow disturbance sawteeth circumferentially arranged at intervals at the outer end of the liquid spraying port refer to sharp protrusions distributed along the edge of the nozzle, and specifically, a triangular or trapezoidal tooth-shaped structure can be adopted to form a secondary flow field by cutting the jet boundary.

[0069] Specifically, when the cross-section of the liquid spraying orifice adopts a converging-diverging structure, the flow velocity of the medium increases when passing through the converging section and a negative pressure zone is formed in the diverging section, which promotes the entrainment and mixing of gas and liquid. The inner wall grooves induce local vortices in the fluid during the flow of the medium, enhancing the shear effect between the gas and liquid phases. The non-circular orifice shape enables the jet to form a multi-directional diffusion atomization field in the crushing chamber 2, and the atomization regions of adjacent orifices overlap and cover each other. The circumferential flow-disturbing serrations divide the continuous jet at the outer edge of the orifice into discrete fine streams, and the turbulence generated in the serration gaps further refines the atomization particles. The synergistic effect of the above structures enables the gas-liquid mixed medium to form a uniformly dispersed atomization layer in the crushing chamber 2, effectively eliminating the locally oxygen-enriched regions.

[0070] Compared with the prior art, traditional atomizing nozzles 21 usually adopt a single circular orifice and the inner wall of the flow channel is smooth. The medium jet is distributed in a continuous columnar shape, which is prone to form a laminar flow state, resulting in low mixing efficiency. Through the optimization of the multi-stage flow channel structure, a turbulent mixing mechanism is formed in the orifice. The asymmetric outlet shape combined with the flow-disturbing serration design makes the distribution of atomization particles more uniform, overcoming the problems of incomplete medium coverage and insufficient mixing existing in the traditional structure.

[0071] Through the above technical solutions, the present application realizes the rapid mixing and uniform distribution of the gas-liquid medium in the crushing chamber 2, effectively reducing the residual oxygen concentration. The optimization of the liquid spraying orifice structure enhances the degree of medium turbulence and increases the contact area between the gas and liquid phases, enabling the inert gas or antioxidant solution to quickly form a protective atomization layer and inhibiting the oxidation reaction during the fruit crushing process. The secondary flow field generated by the circumferential flow-disturbing serrations further refines the atomization particle size, ensuring that the protective medium fully penetrates into the material gaps and forms a continuous low-oxygen protective environment.

[0072] Referring to Figures 1 - 3 , the present application further proposes that the rotary crushing assembly includes a first rotating shaft 3 rotatably connected in the crushing chamber 2. A rotating roller 32 is provided on the first rotating shaft 3, and a plurality of blades 321 are arranged at intervals on the outer wall of the rotating roller 32.

[0073] Among them, the first rotating shaft 3 refers to the rotating component as the core of power transmission, which can be specifically realized by a hollow shaft body made of stainless steel. It forms a sealed connection structure with the wall of the crushing chamber 2 through bearings, maintaining the airtightness of the crushing chamber 2 while transmitting torque. The rotating roller 32 refers to the cylindrical carrier sleeved on the outer periphery of the first rotating shaft 3, which can be specifically realized by a roller body structure with positioning grooves on the surface, used to fix the blades 321 and form a rotary crushing working surface. The blade 321 refers to the metal cutting tool for cutting fruits, which can be specifically realized by an alloy steel blade 321 with a trapezoidal cross-section and a wavy cutting edge, and forms a multi-stage crushing area through equiangular interval arrangement.

[0074] Specifically, when the first rotating shaft 3 drives the rotating roller 32 to rotate, the blades 321 evenly distributed on the outer wall contact the material at different phases, forming a gradient crushing effect. The spaced arrangement of the blades 321 avoids excessive extrusion of the pulp caused by continuous cutting, reducing the premature exudation of cell sap and contact with oxygen. The centrifugal force generated by the rotation of the rotating roller 32 forms a vortex airflow in the crushing chamber 2, promoting the diffusion of the subsequently injected inert gas along the gaps between the blades 321 to cover the surface of the crushed material. The rotational connection structure between the first rotating shaft 3 and the crushing chamber 2 isolates external oxygen infiltration through a sealed bearing while ensuring the power transmission efficiency, creating a local low-oxygen environment.

[0075] Compared with the prior art, traditional crushing equipment mostly uses a set of continuously arranged fixed blades 321, which is prone to over-fine crushing of the pulp and an increased oxygen contact surface during high-speed rotation. Through the synergistic effect of the spaced blades 321 and the rotating roller 32 in this solution, both the uniformity of the crushing particle size is controlled, and the rotational kinetic energy is utilized to promote the gas circulation coverage, overcoming the technical contradiction that it is difficult to balance the crushing efficiency and oxidation protection.

[0076] Through the above technical solution, this application realizes the synchronous progress of physical cutting and gas protection during the fruit crushing process, effectively reducing the exposed area of the pulp and forming a dynamic gas barrier, inhibiting the activity of polyphenol oxidase, and prolonging the color stability of the juice and the retention time of nutrients.

[0077] Referring to Figures 1 - 5 , this application further proposes that the first rotating shaft 3 has an extension end that penetrates the crushing chamber 2 and extends to both ends of the crushing chamber 2. The gas-liquid mixing mechanism includes a cylinder block 4, a piston 41 is slidably connected in the cylinder block 4, a push rod 42 is hinged to the upper end of the piston 41, a crank 33 is provided on one of the extension ends of the first rotating shaft 3, and the outer side of the crank 33 is hinged to the end of the push rod 42 away from the piston 41. A first intake pipe 43 and a second intake pipe 44 are respectively connected between the cylinder block 4 and the regulator storage tank 431 and the nitrogen storage tank 441. One-way valves and flow control valves are provided on both the first intake pipe 43 and the second intake pipe 44. Exhaust pipes 45 are provided between the cylinder block 4 and the atomizing nozzle 21, the juice extraction mechanism, and the juice collection assembly. One-way valves are provided on the exhaust pipes 45.

[0078] Among them, the extended end refers to the structure where both ends of the first rotating shaft 3 extend to the outside of the crushing chamber 2. Specifically, it can be achieved by using a through-type installation method with a shaft sleeve and a sealing ring, which is used to transmit rotational power to an external mechanism. The crank 33 refers to an eccentric wheel structure installed on the extended end, which can be specifically achieved by welding or keyway fixing, and is used to convert rotational motion into reciprocating motion. The push rod 42 refers to a rigid connecting rod connecting the crank 33 and the piston 41, which can be specifically achieved by using a hinged stainless steel rod, and is used to push the piston 41 to slide within the cylinder block 4. The flow control valve refers to a proportional adjustment device installed in the intake pipeline, which can be specifically achieved by using an electromagnetic valve or a manual throttle valve, and is used to adjust the mixing ratio of nitrogen and the regulator.

[0079] Specifically, when the first rotating shaft 3 is driven to rotate, the extended end drives the crank 33 to perform a circular motion, and the push rod 42 generates a reciprocating linear motion under the drive of the crank 33, thereby pushing the piston 41 to slide within the cylinder block 4. When the piston 41 moves downward, a negative pressure is formed within the cylinder block 4, and the media in the regulator storage tank 431 and the nitrogen storage tank 441 are sucked into the cylinder block 4 through the one-way valve; when the piston 41 moves upward, the media are unidirectionally transported through the exhaust pipe 45 to the atomizing nozzle 21 and the subsequent processing area under the action of pressure. The flow control valve can adjust the suction ratio of the two media to achieve a quantitative supply of the gas-liquid mixture. The entire process does not require an independent power source and directly utilizes the rotational kinetic energy of the crushing assembly to drive gas transportation.

[0080] Compared with the prior art, traditional gas-liquid transportation systems need to be separately equipped with an electric pump or a gas pump, which has the problems of high energy consumption and being out of sync with the crushing action. This solution converts the crushing kinetic energy into gas transportation power through mechanical linkage, while reducing the complexity of the equipment, ensuring that the gas supply is strictly synchronized with the crushing operation, and avoiding oxygen control failure caused by excessive or insufficient gas.

[0081] Through the above technical solution, this application realizes the kinetic energy sharing and action synchronization between the crushing operation and gas transportation, and completes the quantitative mixing and transportation of nitrogen and the regulator without external power input. Each rotation of the crushing assembly corresponds to a fixed-stroke gas suction and discharge, enabling the gas supply volume to automatically match the crushing processing volume, and effectively maintaining a stable low-oxygen state in the processing environment.

[0082] The present application further proposes that the juice extraction mechanism includes a juice extraction chamber 5. A second rotating shaft 51 is rotatably connected inside the juice extraction chamber 5. The second rotating shaft 51 is connected and driven to the first rotating shaft 3 through a linkage assembly. A filter cylinder 57 is provided inside the juice extraction chamber 5. The circumferential direction of the filter cylinder 57 is densely provided with mesh holes. The second rotating shaft 51 is located inside the filter cylinder 57. The first rotating shaft 3 is axially spaced with a first juice extraction roller 54 and a second juice extraction roller 55. The diameter of the first juice extraction roller 54 is smaller than that of the second juice extraction roller 55. The axial direction of the second rotating shaft 51, the first juice extraction roller 54 and the second juice extraction roller 55 is provided with continuous spiral feeding blades 53. A diversion channel for guiding the juice into the juice collection assembly is provided between the outer wall of the filter cylinder 57 and the inner wall of the juice extraction chamber 5.

[0083] Among them, the linkage assembly refers to a transmission mechanism connecting the first rotating shaft 3 and the second rotating shaft 51, which can be specifically realized by a gear set or a pulley set, and is used to synchronously transmit the rotational power of the rotating shaft in the crushing chamber 2 to the rotating shaft of the juice extraction chamber 5. Among them, the filter cylinder 57 refers to a metal cylinder with densely arranged mesh holes in the circumferential direction, which can be specifically made by a stainless steel punching process, and is used to block the pulp fibers and allow the juice to seep out during the juice extraction process. Among them, the first juice extraction roller 54 and the second juice extraction roller 55 refer to cylindrical extrusion components with increasing diameters, which can be specifically a roller body structure with spiral ridges on the surface, and are used to apply a gradient pressure to the crushed pulp. Among them, the spiral feeding blade 53 refers to a spiral diversion plate continuously arranged along the axial direction, which can be specifically fixed on the surface of the rotating shaft by welding or integral molding, and is used to push the material to move from the crushing chamber 2 to the discharge end. Among them, the diversion channel refers to the annular gap between the outer wall of the filter cylinder 57 and the inner wall of the juice extraction chamber 5, which can be specifically formed by adjusting the difference between the diameter of the filter cylinder 57 and the inner diameter of the juice extraction chamber 5, and is used to collect and direct the separated juice.

[0084] Specifically, the linkage assembly enables the rotating shaft of the crushing chamber 2 to rotate synchronously with the rotating shaft of the juice extraction chamber 5 through mechanical connection, realizing a seamless connection between the crushing and juice extraction processes. After being processed by the crushing chamber 2, the material is pushed into the juice extraction chamber 5 by the spiral feeding blade 53 and sequentially undergoes progressive extrusion by the first juice extraction roller 54 and the second juice extraction roller 55. During the juice extraction process, the juice generated enters the diversion channel through the mesh holes of the filter cylinder 57, while the fruit residue is restricted inside the filter cylinder 57 and continues to move forward. The first juice extraction roller 54 with a smaller diameter performs preliminary pressing on the loose pulp, and the second juice extraction roller 55 with a larger diameter applies a higher pressure to the dense material, avoiding juice splashing caused by sudden changes in instantaneous pressure through staged extrusion. The continuous spiral feeding blade 53 eliminates the stagnant areas during the material transportation process, enabling the pulp to continuously move in a closed space and reducing the contact opportunity with oxygen.

[0085] Compared with the prior art, traditional juicers adopt an open structure. During the juice separation process, the fruit residue has a large contact area with air, leading to intensified oxidative browning. In this solution, a closed juice separation environment formed by the filter cartridge 57 and the diversion channel physically isolates the juice collection path from the fruit residue propulsion path, effectively shortening the juice exposure time. In existing equipment, there are power connection gaps in the separately driven crushing and juicing mechanisms, resulting in the material being exposed to air during the transfer process. The linked drive design in this solution achieves zero-gap connection between processes, creating a continuous low-oxygen processing environment.

[0086] Through the above technical solution, this application realizes the fully enclosed transportation of crushed pulp from extrusion to residue discharge, preventing oxygen from infiltrating midway in the processing chain. The continuous pushing function of the spiral feeding blade 53 eliminates the local oxidation area caused by material accumulation. The diameter-increasing juicing roller group avoids juice splashing and damaging the airtight environment by applying progressive pressure. The structure of the filter cartridge 57 synchronously completes juice residue separation and juice diversion during the dynamic extrusion process, enabling fresh juice to quickly enter the low-oxygen collection system, significantly reducing the activity of polyphenol oxidase and inhibiting the proliferation of microorganisms.

[0087] This application further proposes that the juicing mechanism further includes an extrusion head 56 located at the discharge end of the juicing chamber 5. There is an extrusion channel 561 between the extrusion head 56 and the discharge port of the juicing chamber 5. A collection box 12 is provided at the bottom of the frame 1, and the collection box 12 is located directly below the extrusion channel 561.

[0088] Among them, the extrusion head 56 refers to a rigid member installed at the end of the juicing chamber 5, which can be specifically realized by combining a conical metal block and a hydraulic drive device, and is used to apply a linear extrusion force to the fruit residue. The extrusion channel 561 refers to a tapered gap formed by the outer wall of the extrusion head 56 and the inner wall of the discharge port of the juicing chamber 5, which can be specifically realized by designing the discharge port in a flared shape to generate a continuous pressure gradient through space compression. The collection box 12 refers to a container with a sealed cover 22, which can be specifically realized by configuring a stainless steel box body and a bottom drain valve, and is used to receive the juice dripping during the extrusion process and block air contact.

[0089] Specifically, when the juiced fruit residue is discharged from the juicing chamber 5, it first enters the extrusion channel 561 formed by the extrusion head 56 and the discharge port. As the fruit residue moves in the channel, the cross-sectional area of the channel gradually decreases, and the fruit residue is subjected to the dual mechanical pressure of the extrusion head 56 and the chamber wall, and the remaining juice inside is further extruded. The squeezed and released juice flows downward along the inner wall of the channel under the action of gravity and directly falls into the airtight collection box 12 located directly below the channel, avoiding contact with air during the juice dripping process.

[0090] Compared with the prior art, conventional juice extraction equipment only completes juice separation through a single spiral extrusion. The juice remaining in the pulp is not subjected to secondary pressing, and the open diversion trough used in the juice collection link is prone to oxidation. This solution improves the pressing efficiency and oxygen control effect by adding a mechanical pressing head 56 and a directional collection structure to form a secondary pressing area at the end of juice extraction, continuously increasing the pressure intensity by utilizing the space compression effect of the tapered channel, and shortening the juice collection path to a vertical drop mode.

[0091] Through the above technical solution, this application solves the problem of the decrease in juice yield caused by insufficient pressing of the juice remaining in the residue after juice extraction, and at the same time eliminates the risks of enzymatic browning and microbial contamination caused by the exposure of the juice to air during the collection process.

[0092] Refer to Figure 1 and Figure 2 , this application further proposes that the juice collection component includes a collection trough 6. A drain pipe 61 is provided at the bottom of the collection trough 6, and an exhaust pipe 45 is connected to the inner cavity of the collection trough 6 from the bottom of the collection trough 6.

[0093] Among them, the collection trough 6 refers to a container for accommodating the juice after juice extraction, which can be made of stainless steel or food-grade plastic specifically. Its bottom is inclined for easy liquid flow. The drain pipe 61 refers to a diversion pipeline provided at the bottom of the collection trough 6, which can be configured with a solenoid valve to control the opening and closing, and is used to direct the juice to a liquid storage tank or filling equipment. The connection method of the exhaust pipe 45 refers to introducing the gas transmission pipeline of the gas-liquid mixing mechanism from the bottom of the collection trough 6, and a ring distributor or a microporous aeration device can be specifically adopted to make the gas diffuse evenly in the form of tiny bubbles.

[0094] Specifically, when the juice flows into the collection trough, the nitrogen or regulator mixed gas output by the gas-liquid mixing mechanism is continuously injected through the bottom exhaust pipe 45. The gas forms an upward air flow in the liquid, pushing the air at the top of the collection trough 6 to be discharged through the drain pipe 61, and establishing an inert gas covering layer. When the gas contacts the juice, the tiny bubbles increase the gas-liquid contact area, prompting the dissolved oxygen to be displaced and discharged. The drain pipe 61 automatically opens when the juice reaches the preset liquid level, realizing the coordinated operation of the dynamic decline of the liquid level and the continuous replenishment of the gas, so that a low-oxygen state is always maintained in the collection trough 6.

[0095] Compared with the prior art, the traditional juice collection device only fills the inert gas through the top space and cannot effectively expel the dissolved oxygen and the oxygen attached to the liquid surface. In the prior art, the gas inlet pipe is mostly arranged on the side wall or the top of the collection trough 6, and the contact time between the gas and the liquid is short, and the replacement efficiency is low. This solution combines bottom aeration with dynamic liquid drainage, enabling the gas to stay fully inside the liquid and realizing the synchronous removal of dissolved oxygen and the oxygen in the space.

[0096] Through the above technical solution, the present application effectively blocks the contact path between the juice and oxygen, inhibits the active reaction of polyphenol oxidase, and avoids the deterioration of the juice color. At the same time, the nitrogen environment inhibits the proliferation of aerobic microorganisms in the collection tank 6, ensuring the microbial safety of the juice during the temporary storage stage. The interlocking control of the drain pipe 61 and the gas injection can prevent the juice from accumulating for too long and reduce the oxidation reaction time window.

[0097] The present application further proposes that the linkage assembly includes a second pulley 31 and a third pulley 311 provided at the end of the first rotating shaft 3, a fourth pulley 52 provided at the end of the second rotating shaft 51, a second transmission belt is connected between the third pulley 311 and the fourth pulley 52, and further includes a driving motor 11. A first pulley 111 is provided at the output end of the driving motor 11, and a first transmission belt 112 is connected between the first pulley 111 and the second pulley 31.

[0098] Among them, the linkage assembly refers to the power transmission system connecting the crushing assembly and the juice extraction assembly. Specifically, a combination structure of multiple pulleys and transmission belts can be used to achieve the matching of the rotational speeds of the two mechanisms through mechanical hard connection. The second pulley 31 refers to the outer peripheral toothed structure installed at the input end of the first rotating shaft 3, which can be made of cast iron or aluminum alloy materials specifically, and is used to receive the power output by the driving motor 11. The third pulley 311 refers to the outer peripheral toothed structure provided at the output end of the first rotating shaft 3, and its number of teeth forms a preset transmission ratio with the fourth pulley 52, and is used to transmit the power to the second rotating shaft 51 of the juice extraction mechanism. The fourth pulley 52 refers to the outer peripheral toothed structure installed at the input end of the second rotating shaft 51, and its diameter is adapted to the third pulley 311, and is used to receive the power from the crushing mechanism and drive the juice extraction roller to rotate. The first transmission belt 112 refers to the closed annular transmission part connecting the driving motor 11 and the second pulley 31, which can be a rubber synchronous belt specifically, and is used to achieve the power transmission between the driving motor 11 and the crushing assembly. The second transmission belt refers to the closed annular transmission part connecting the third pulley 311 and the fourth pulley 52, and its length is determined according to the axial distance between the two pulleys, and is used to establish a rigid linkage relationship between the crushing and juice extraction actions.

[0099] Specifically, when the drive motor 11 starts, its output shaft drives the first pulley 111 to rotate, and drives the second pulley 31 to rotate synchronously through the first transmission belt 112, so that the first rotating shaft 3 drives the crushing blade 321 to perform crushing operation on fruits. At the same time, the third pulley 311 at the end of the first rotating shaft 3 drives the fourth pulley 52 to rotate through the second transmission belt, and then drives the second rotating shaft 51 of the juice extraction mechanism to operate. Since the tooth number ratio of the third pulley 311 and the fourth pulley 52 is fixed, the rotational speeds of the crushing blade 321 and the juice extraction roller form a strict proportional relationship, ensuring that the crushed fruit residue can be continuously extruded by the juice extraction roller without accumulation. The meshing transmission mode of the pulley and the transmission belt can effectively absorb the instantaneous impact load during the operation of the equipment, avoid the fracture of the transmission chain or the tooth jamming of the gear caused by the sudden change of the load, and thus maintain the stability of the overall operation of the equipment.

[0100] Compared with the prior art, traditional crushing and juice extraction equipment often uses independent motors to drive the crushing and juice extraction mechanisms respectively, which has problems such as scattered power sources and difficult speed coordination. It is easy to cause poor connection between the two processes and form material accumulation, which in turn leads to equipment vibration or seal failure. This solution realizes the mechanical forced synchronization of the crushing and juice extraction actions through a single drive source combined with a hierarchical transmission system, eliminating the risk of equipment resonance caused by asynchronous operation. Compared with the gearbox transmission, the pulley transmission has the advantages of simple structure and low maintenance cost, and does not require additional lubrication, avoiding the infiltration of lubricating oil into the processing area and polluting the juice.

[0101] Through the above technical solution, this application solves the problems of equipment vibration and seal failure caused by asynchronous transmission between crushing and juice extraction. By means of rigid linkage, the actions of the two processes are coordinated, reducing the wear of the seal structure caused by mechanical impact, effectively maintaining the tightness of the crushing chamber 2 and the juice extraction chamber 5, and blocking the path of external oxygen infiltrating into the processing environment. The elastic characteristics of the pulley transmission can buffer the instantaneous load fluctuation, avoid the overload shutdown of the transmission system caused by material blockage, and improve the reliability of the continuous operation of the equipment.

[0102] This application further proposes that there are several groups of sterilization lamps 58 arranged in the juice extraction chamber 5, and several groups of sterilization lamps 58 are arranged at intervals along the circumferential direction of the filter cylinder 57.

[0103] Among them, the sterilization lamp 58 refers to a device that inactivates microorganisms by emitting ultraviolet light or light of a specific wavelength. Specifically, a low-pressure mercury lamp or an LED ultraviolet lamp can be used to achieve it, and its emission wavelength range can be 200-280 nanometers to destroy the DNA structure of microorganisms. Among them, the circumferential interval arrangement means that the sterilization lamps 58 are distributed in an annular array around the outer wall of the filter cylinder 57. Specifically, one group of sterilization lamps 58 can be installed every 90 degrees or 120 degrees to form a dead-angle-free irradiation area by evenly covering the circumferential surface of the filter cylinder 57.

[0104] Specifically, after the sterilization lamps 58 are arranged at intervals along the outer circumference of the filter cartridge 57, the sterilization light emitted by them penetrates the mesh holes on the surface of the filter cartridge 57 and enters the internal fruit residue conveying area. During the axial movement of the fruit residue under the push of the spiral feeding blades 53, it continuously receives irradiation from multiple groups of sterilization lamps 58 at different angles. The light transmissivity of the filter cartridge 57 enables the light to act on the internal fruit residue and the juice in the external diversion channel simultaneously, killing microorganisms such as mold spores and yeasts adhering to the surface of the fruit residue and suspended in the juice. The circumferential arrangement eliminates the shadow blind area caused by a single-sided light source, ensuring that all sides of the fruit residue can receive effective irradiation during rotational propulsion. The spatial cooperation relationship between the sterilization lamps 58 and the filter cartridge 57 avoids the occlusion of the light path by mechanical components, realizing real-time inhibition of microorganisms during the continuous processing process.

[0105] Compared with the prior art, traditional equipment usually sets the sterilization lamp 58 at a single point on the top or side of the juice extraction bin 5, resulting in limited light coverage and irradiation dead angles. The circumferentially spaced arrangement of the sterilization lamp groups 58 forms a surrounding irradiation network, combined with the light transmissive characteristics of the filter cartridge 57, to achieve synchronous double-sided sterilization of the internal and external parts of the fruit residue. In the prior art, the separate design of the filter cartridge 57 and the sterilization lamp 58 cannot take into account the synergistic effect of mechanical conveying and optical sterilization. This solution optimizes the spatial layout to dynamically match the sterilization efficiency with the material conveying, avoiding the continuous accumulation of microorganisms in the processing chain.

[0106] Through the above technical solutions, this application can effectively inhibit the growth of molds and yeasts during the juice processing process, prevent fruit residue residues and juice spoilage. The sterilization light penetrates the mesh holes of the filter cartridge 57 to achieve multi-angle continuous irradiation of the conveyed materials, eliminating the hidden danger of microorganism proliferation. This design can ensure the safety of the juice without adding chemical preservatives, and at the same time avoid the destruction of heat-sensitive nutrients by high-temperature sterilization, maintaining the natural quality and flavor stability of the juice.

[0107] What is not described in this invention can be realized by adopting or referring to the existing technologies.

[0108] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key points of each embodiment are to illustrate the differences from other embodiments.

[0109] The above are only the embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A conveying device for broken fruits, characterized in that, It includes a frame body (1), a juice extraction mechanism is provided on the frame body (1), a feed end and a discharge end are respectively provided at both ends of the juice extraction mechanism, a juice collection assembly is provided at the lower end in the middle of the juice extraction mechanism, a crushing bin (2) is provided on the feed end, and a rotary crushing assembly is provided in the crushing bin (2). It further includes a gas-liquid mixing mechanism, a regulator storage tank (431), and a nitrogen storage tank (441). The gas-liquid mixing mechanism is used to extract the regulator in the regulator storage tank (431) and / or the nitrogen in the nitrogen storage tank (441) and introduce them into the crushing bin (2), the juice extraction mechanism, and the juice collection assembly. A sealing cover (22) is provided on the crushing bin (2), and two rows of atomizing nozzles (21) are symmetrically provided in the crushing bin (2). The output ends of the gas-liquid mixing mechanism are respectively connected to the two groups of atomizing nozzles (21).

2. The conveying device for crushing fruits according to claim 1, characterized in that, Flow control units are respectively provided between the regulator storage tank (431), the nitrogen storage tank (441) and the gas-liquid mixing mechanism. It further includes a control mechanism, an oxygen concentration monitoring mechanism, and a PH monitoring mechanism. The oxygen concentration monitoring mechanism is used to monitor the oxygen content in the crushing bin (2), the juice extraction mechanism, and the juice collection assembly. The PH monitoring mechanism is used to monitor the PH value of the environment in the crushing bin (2), the juice extraction mechanism, and the juice collection assembly. The control mechanism controls the flow control unit to adjust the input amounts of nitrogen and regulator according to the monitoring data of the oxygen concentration monitoring mechanism and the PH monitoring mechanism.

3. The conveying device for crushing fruits according to claim 1, wherein, The atomizing nozzle (21) includes a number of liquid spraying ports arranged at intervals in the horizontal direction. The cross-section of the liquid spraying port first contracts and then expands along the medium flow direction. A number of grooves are provided on the inner wall of the liquid spraying port. The shape of the liquid spraying port is non-circular, and a number of flow disturbance sawteeth are circumferentially arranged at intervals at the outer end of the liquid spraying port.

4. A conveying device for crushing fruits according to claim 1, characterized in that, The rotary crushing assembly includes a first rotating shaft (3) rotatably connected in the crushing bin (2). A rotating roller (32) is provided on the first rotating shaft (3), and a number of blades (321) are arranged at intervals on the outer wall of the rotating roller (32).

5. The conveying device for crushing fruits according to claim 4, characterized in that, The first rotating shaft (3) has an extension end that penetrates the crushing bin (2) and extends to both ends of the crushing bin (2). The gas-liquid mixing mechanism includes a cylinder body (4). A piston (41) is slidably connected in the cylinder body (4). A push rod (42) is hinged to the upper end of the piston (41). A crank (33) is provided on one of the extension ends of the first rotating shaft (3). The outer side of the crank (33) is hinged to the end of the push rod (42) away from the piston (41). A first inlet pipe (43) and a second inlet pipe (44) are respectively connected between the cylinder body (4) and the regulator storage tank (431), the nitrogen storage tank (441). One-way valves and flow control valves are provided on both the first inlet pipe (43) and the second inlet pipe (44). Exhaust pipes (45) are respectively provided between the cylinder body (4) and the atomizing nozzles (21), the juice extraction mechanism, and the juice collection assembly. One-way valves are provided on the exhaust pipes (45).

6. The conveying device for crushing fruits according to claim 4, characterized in that, The juice extraction mechanism includes a juice extraction chamber (5). A second rotating shaft (51) is rotatably connected inside the juice extraction chamber (5). The second rotating shaft (51) is connected and driven to the first rotating shaft (3) through a linkage assembly. A filter cylinder (57) is provided inside the juice extraction chamber (5). The circumferential direction of the filter cylinder (57) is densely distributed with mesh holes. The second rotating shaft (51) is located inside the filter cylinder (57). The first rotating shaft (3) is axially provided with a first juice extraction roller (54) and a second juice extraction roller (55) at intervals. The diameter of the first juice extraction roller (54) is smaller than that of the second juice extraction roller (55). Continuous spiral feeding blades (53) are provided axially on the second rotating shaft (51), the first juice extraction roller (54), and the second juice extraction roller (55). A diversion channel for guiding the juice into the juice collection assembly is provided between the filter cylinder (57) and the inner wall of the juice extraction chamber (5).

7. A conveying device for crushing fruits according to claim 6, characterized in that, The juice extraction mechanism further includes a squeezing head (56) located at the discharge end of the juice extraction chamber (5). An extrusion channel (561) is provided between the squeezing head (56) and the discharge port of the juice extraction chamber (5). A collection box (12) is provided at the bottom of the frame body (1). The collection box (12) is located directly below the extrusion channel (561).

8. A conveying device for crushing fruits according to claim 5, characterized in that, The juice collection assembly includes a collection trough (6). A drain pipe (61) is provided at the bottom of the collection trough (6). The exhaust pipe (45) is connected into the inner cavity of the collection trough (6) from the bottom of the collection trough (6).

9. The conveying device for crushing fruits according to claim 6, characterized in that, The linkage assembly includes a second pulley (31) and a third pulley (311) provided at the end of the first rotating shaft (3). A fourth pulley (52) is provided at the end of the second rotating shaft (51). A second transmission belt is connected between the third pulley (311) and the fourth pulley (52). It further includes a drive motor (11). A first pulley (111) is provided at the output end of the drive motor (11). A first transmission belt (112) is connected between the first pulley (111) and the second pulley (31).

10. A conveying device for crushing fruits according to any one of claims 6-9, characterized in that, A number of sterilization lamps (58) are provided inside the juice extraction chamber (5). The number of groups of the sterilization lamps (58) are arranged at intervals along the circumferential direction of the filter cylinder (57).

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