Fresh fruit whole fruit pretreatment system for fruit piece processing

Abstract

This invention relates to a pretreatment system for whole fresh fruit in fruit processing, comprising a controller, an enzymatic hydrolysis tank, an acid treatment mechanism, a neutralization and dilution mechanism, and an alkali treatment mechanism, to complement an enzymatic treatment method for whole fresh fruit in fruit processing. The enzymatic hydrolysis tank includes a tank body and a lid. The acid treatment mechanism includes a transfer box, an acid treatment tank, and a first conveying mechanism; the transfer box has a material outlet. The neutralization and dilution mechanism includes a spraying mechanism, a neutralization and dilution tank, and a second conveying mechanism. The alkali treatment mechanism includes an alkali treatment tank and a third conveying mechanism. This processing system has a reasonable structural design, including enzymatic hydrolysis, post-enzymatic hydrolysis acid treatment, neutralization and dilution treatment, and alkali treatment structures. From the start of enzymatic hydrolysis, feeding and unloading are convenient, and the control of enzymatic hydrolysis process parameters is easy. It allows for large feeding volumes without damaging individual fresh fruits, providing high-quality raw materials for subsequent processing steps, thus balancing product quality and efficiency.

Description

Technical Field

[0001] This invention relates to a pretreatment system for whole fresh fruit for fruit processing, belonging to the technical field of fruit processing equipment. Background Technology

[0002] Existing methods for processing citrus fruit pieces involve peeling and segmenting citrus fruits to obtain segments, which are then processed to obtain fruit pieces. For example, Chinese invention patent CN104366317B, with authorization announcement date June 16, 2017, discloses a method for processing citrus fruit pieces, which proceeds according to the following steps:

[0003] (1) Raw material pretreatment: Place the raw orange slices in the soaking tank and soak them under acidic conditions for 1-12 hours;

[0004] (2) Raw material cleaning: The orange slices pretreated in step (1) are lifted into the aeration cleaning machine by the lifting mechanism. The discharge port of the aeration cleaning machine is equipped with a discharge device, which consists of a box and a rotatable bristle roller inside the box. The cleaned orange slices are further cleaned by the bristle roller to remove filamentous impurities and are ready for use.

[0005] (3) Alkali treatment of raw materials: The orange slices cleaned in step (2) are lifted by the lifting mechanism into the alkali treatment tank system for alkali treatment;

[0006] (4) Thermal separation: After the alkali-treated orange slices are filtered to remove water, they are sent to a jacketed kettle with stirring for thermal separation. After the orange slices are put into the jacketed kettle, hot water at 90-95℃ is injected. The mass ratio of orange slices to water is 1:1. When the water temperature in the jacketed kettle reaches 48-50℃, stirring and heating are started. When the temperature reaches 70-75℃, heating is stopped. The stirring time for each batch is 7-10 minutes. When it is found that the rotation of the material in the jacketed kettle changes from fast to slow or stops, hot water is added. When the cysts turn orange-yellow or the orange slice cysts are completely separated, stirring is stopped and the material is discharged into a buffer tank for later use.

[0007] (5) Screening: The material in the buffer tank is conveyed to the vibrating screen through the chute for screening;

[0008] (6) Impurity removal: The fruit granules obtained by screening in step (5) are first passed through a dissolved air flotation fruit impurity separator to remove impurities, then through a grate hanging mechanism to remove ribs, and finally through a trough water method to remove pits.

[0009] (7) Light inspection, weighing, pre-heating, filling, sterilization, and warehousing.

[0010] The method of this invention has high production efficiency, good product controllability, and produces fruit pieces with uniform quality and extremely low impurity content. However, it still has shortcomings: in order to maintain the integrity of the orange slices and improve the product yield, the peeling of citrus fruits is required to be very high, and it is all done manually, which restricts production efficiency and makes it impossible to balance quality and efficiency.

[0011] To this end, after years of practical research, the applicant has proposed a method for enzymatic treatment of whole fresh fruit for granule processing. This method utilizes bio-enzyme treatment technology to pre-treat whole fresh fruit with enzymatic hydrolysis, replacing the peeling, raw material pretreatment, and raw material washing steps of existing technologies. The enzymatic hydrolysis process offers good controllability, high production efficiency, and ensures both quality and efficiency. This invention aims to provide a pre-treatment system for whole fresh fruit for granule processing, in conjunction with the enzymatic treatment method for whole fresh fruit in granule processing. Summary of the Invention

[0012] This invention aims to provide a more optimized pretreatment system for whole fresh fruit in fruit granule processing, in conjunction with an enzyme treatment method for whole fresh fruit in fruit granule processing. The system has a reasonable structural design, including enzymatic hydrolysis, post-enzymatic hydrolysis acid treatment, neutralization and dilution treatment, and alkali treatment. From the start of enzymatic hydrolysis, feeding and unloading are convenient, and the enzymatic hydrolysis process parameters are easy to control. It can handle a large amount of feed without damaging individual fresh fruits, providing a high-quality raw material guarantee for subsequent processing steps, thus balancing product quality and efficiency.

[0013] The technical solution adopted by this invention to solve its technical problem is:

[0014] A pretreatment system for fresh whole fruit used in fruit processing includes a controller, an enzymatic hydrolysis tank, an acid treatment unit, a neutralization and dilution unit, and an alkali treatment unit.

[0015] The enzymatic hydrolysis tank includes a tank body and a cover. The cover is rotatably connected to the tank body via a first rotation control structure and can be flipped relative to the tank body to open or close the inner cavity of the tank. The cover is provided with a manhole and several electrically controlled valves and / or sensor interfaces. A mesh sleeve is detachably provided inside the tank. The mesh sleeve is provided with several liquid inlet channels in its circumference. The top of the mesh sleeve is provided with a mesh sleeve cover, which is rotatably connected via a second rotation control structure and can be flipped relative to the mesh sleeve to open or close the inner cavity of the mesh sleeve. The bottom of the mesh sleeve is provided with a discharge mechanism. The inner cavity of the mesh sleeve is connected to the inner cavity of the tank through the liquid inlet channels.

[0016] The acid treatment mechanism includes a transfer box, an acid treatment tank, and a first conveying mechanism. The transfer box has a material outlet located at the feed end of the acid treatment tank. The first conveying mechanism is arranged along the length of the acid treatment tank and can rotate cyclically relative to the acid treatment tank. The material outlet of the transfer box is inclined towards the feed end of the acid treatment tank and is also equipped with a first control valve. The angle between the material outlet and the contact surface of the acid treatment tank is obtuse, and the contact part has a rounded transition structure. The first conveying mechanism is inclined at an acute angle upward relative to the acid treatment tank from the feed end to the discharge end. The acid treatment tank is equipped with a matching first pH sensor.

[0017] The neutralization and dilution treatment mechanism includes a spraying mechanism, a neutralization and dilution treatment tank, and a second conveying mechanism. The second conveying mechanism is arranged along the length of the neutralization and dilution treatment tank and can rotate cyclically relative to the neutralization and dilution treatment tank. The second conveying mechanism is inclined at an acute angle upward relative to the neutralization and dilution treatment tank from the feed end to the discharge end. The neutralization and dilution treatment tank is equipped with a matching second pH sensor and a second temperature sensor. The spraying mechanism is located at the discharge end of the second conveying mechanism and is equipped with several spray heads. The opening of the spraying mechanism is controlled by a second electric control valve. The second pH sensor, the second temperature sensor, the drive motor of the second conveying mechanism, and the second electric control valve of the spraying mechanism are all electrically connected to the controller.

[0018] The alkali treatment mechanism includes an alkali treatment tank and a third conveying mechanism. The third conveying mechanism is arranged along the length of the alkali treatment tank and can slide cyclically relative to the alkali treatment tank.

[0019] The alkali treatment tank is equipped with a suitable third pH sensor and a third temperature sensor. The third pH sensor, the third temperature sensor, and the drive motor of the third conveying mechanism are all electrically connected to the controller. The third conveying mechanism includes a conveying section located inside the alkali treatment tank and a lifting section that slopes upward from the end of the alkali treatment tank. The conveying section slopes upward at an acute angle relative to the alkali treatment tank from the feed end to the discharge end. A storage bin is provided at the tail end of the lifting section.

[0020] This invention relates to a pretreatment system for whole fresh fruit in fruit processing, which is designed to complement an enzyme treatment method for whole fresh fruit in fruit processing. Harvested whole fruit is perforated with 1cm diameter holes and 0.5-1cm depth at both the stem and tail ends. The whole fruit is then placed in a mesh sleeve and then into a tank. Enzymatic hydrolysate is added, and the temperature, pressure, and pH are adjusted for enzymatic hydrolysis. The hydrolysate contacts the fresh fruit through the inlet channel of the mesh sleeve and penetrates into the pulp through the perforation holes, hydrolyzing the internal tissues except for the pulp. This treatment system has a reasonable structural design, is convenient for feeding and unloading, and allows for easy control of enzymatic hydrolysis process parameters. It allows for a large feeding capacity, with the mesh sleeve volume being roughly equivalent to the tank's internal cavity volume, preventing damage to individual fresh fruits. After being placed in the mesh sleeve, the fresh fruits remain static, preventing collisions or other damage.

[0021] After enzymatic hydrolysis, the fruit is poured into a transfer tank and then introduced into an acid treatment tank through the material outlet. The acid treatment solution in the tank has been prepared in advance, and the pH and temperature of the acid treatment have been adjusted. The fresh fruit is carried through the acid treatment tank by the rotation of the conveyor mechanism. The acid treatment time is controlled based on the rotation speed of the conveyor mechanism. At the end of the acid treatment, the fresh fruit is separated from the acid treatment solution by the lifting of the conveyor mechanism to avoid excessive acid treatment affecting the quality. All contact parts have a rounded transition structure to prevent the fresh fruit from being bumped or scratched by the parts and damaged.

[0022] After acid treatment, the fresh fruit is introduced into the neutralization and dilution treatment tank through the material inlet. The tank is pre-prepared with a neutralization and dilution solution, usually water, and the temperature is adjusted. The fresh fruit is carried through the neutralization and dilution treatment tank by the rotation of the conveyor mechanism. The neutralization and dilution treatment time is controlled based on the rotation speed of the conveyor mechanism. At the end of the neutralization and dilution treatment, the fresh fruit is separated from the neutralization and dilution treatment solution by the lifting of the conveyor mechanism. Finally, the fruit is diluted by spraying through the spraying mechanism.

[0023] After neutralization, the fresh fruit is introduced into the alkali treatment tank through the material inlet. The tank contains a pre-prepared alkali treatment solution, typically water, with the temperature regulated. A conveyor mechanism rotates, carrying the fresh fruit through the tank. The alkali treatment time is controlled by the conveyor's rotation speed. At the end of the alkali treatment process, an elevator separates the fresh fruit from the alkali treatment solution. Therefore, the alkali treatment mechanism has a reasonable structural design, matching the enzymatic hydrolysis process of the fresh fruit, ensuring high-quality raw materials and balancing product quality with efficiency.

[0024] Preferably, the shape of the mesh sleeve is adapted to the shape of the inner cavity of the tank, and the gap between the mesh sleeve and the inner cavity of the tank is 10-15cm. The mesh sleeve cover and the unloading mechanism are also provided with liquid inlet channels. On the one hand, this maximizes the volume of the mesh sleeve and increases the feeding amount. On the other hand, the liquid inlet channels are provided around the entire circumference, allowing the enzymatic hydrolysate to permeate circumferentially, improving permeation efficiency and enzymatic hydrolysis efficiency.

[0025] Preferably, the liquid inlet channel is a circular, elliptical, triangular, or polygonal liquid inlet hole, and the liquid inlet cross-sectional area of ​​the liquid inlet hole is ∈ [10cm²]. 2 150cm 2 A larger cross-sectional area inlet hole is designed to improve the efficiency of enzyme hydrolysate exchange.

[0026] Preferably, the top of the mesh sleeve is provided with a fixed beam, and the fixed beam is equipped with a hoisting mechanism. The mesh sleeve cover includes mesh sleeve cover A and mesh sleeve cover B. The second rotation control structure includes a second rotation control structure A and a second rotation control structure B. Mesh sleeve cover A cooperates with the second rotation control structure A and is located on one side of the fixed beam. Mesh sleeve cover B cooperates with the second rotation control structure B and is located on the other side of the fixed beam. When the amount of material fed into the mesh sleeve is large, the transportation and handling of the product is relatively laborious and requires hoisting. Therefore, a fixed beam and a hoisting mechanism are provided to facilitate feeding and unloading operations. The mesh sleeve cover includes mesh sleeve cover A and mesh sleeve cover B, which are rotatably connected to the mesh sleeve, providing versatility and convenience for the mesh sleeve equipment. During operation, one or both can be opened as needed, which is very convenient.

[0027] Preferably, the system also includes locking structures A and B, which are used to lock and secure the net cover A and net cover B after they are closed. By locking and securing them, the fresh fruit inside the net is fixed, preventing it from colliding with each other during floating, thus avoiding damage to the fruit and affecting the quality of subsequent products.

[0028] Preferably, the lifting mechanism is rotatably connected to the fixed beam and can be flipped towards the mesh cover A and / or mesh cover B. The lifting mechanism can be flipped relative to each other, standing upright when in use and flipped down after use, so that it does not occupy a large additional vertical volume in the tank, thus maximizing the storage volume of the enzymatic hydrolysate in the tank.

[0029] Preferably, the unloading mechanism includes an unloading plate, an unloading handle, and a limiting member. The unloading plate is adapted to the cross-section of the bottom end of the mesh sleeve and is rotatably connected to it via a third rotation control structure. The unloading handle is fixed to the side wall of the unloading plate, and the limiting member is located on the side of the bottom end of the mesh sleeve. The unloading plate can be flipped by the unloading handle, and the unloading plate can be locked by the cooperation between the unloading handle and the limiting member. The efficiency and method of unloading fresh fruit after enzymatic hydrolysis are also very important to avoid collision and damage. The design of the unloading mechanism of this invention achieves a balance between efficiency and quality assurance, and is very practical in practice. The mesh sleeve is suspended above the conveyor belt, and the unloading plate is gently opened. The enzymatically hydrolyzed fresh fruit is carried away by the movement of the conveyor belt, resulting in high unloading efficiency and less fresh fruit squeezed under the unloading plate, thus avoiding mutual collision.

[0030] Preferably, the unloading handle is rotatably connected to the unloading plate via a fourth rotation control structure. The limiting member is provided with a sliding groove. After the unloading handle rotates relative to the unloading plate, it slides into the sliding groove to achieve locking and limiting. After the unloading handle slides out of the sliding groove, the unloading plate can be opened. The structure of the present invention makes the unloading operation simple, labor-saving, and reliable.

[0031] Preferably, the tank body, lid body and mesh sleeve are all made of food-grade stainless steel, and the tank body is equipped with a jacket or outer coil.

[0032] Preferably, the sensor interfaces provided with the cover include a temperature sensor interface, a pressure sensor interface, and a pH sensor interface, and the control valves provided include an enzyme preparation addition control valve and a pH adjuster addition control valve.

[0033] Arc transition structure: refers to the connection between two contact surfaces or contact parts through an arc-shaped component or processing method, which reduces the resistance of materials passing through and avoids bumping or scratching the fresh fruit.

[0034] Preferably, the transfer box has at least one buffer ridge along its width, and the surface of the buffer ridge is arc-shaped. In practice, it has been found that the buffer ridge effectively slows down the rolling of fresh fruit, avoids mutual collisions, and also prevents a large accumulation of material at the material outlet.

[0035] Preferably, the radial height of the buffer ridge is 2-4 cm. This design of the buffer ridge size can meet the processing needs of different fresh fruits.

[0036] Preferably, the material outlet of the transfer box is inclined at an angle of 10-20° towards the feed end of the acid treatment tank, ensuring that the fresh fruit material can automatically and slowly flow to the material outlet. The angle between the material outlet and the contact surface of the acid treatment tank is 150-155°. This angle, combined with the rotation speed of the conveying mechanism, can precisely match the acid treatment process, control the acid treatment time, and effectively utilize the length of the acid treatment tank.

[0037] Preferably, the material outlet of the transfer box is inclined at an angle of 15° toward the feed end of the acid treatment tank, and the included angle between the material outlet and the contact surface of the acid treatment tank is 155°.

[0038] Preferably, the control valve uses a double-door design to control the opening and closing of the material outlet. The control valve includes a left rotating shaft and a left control plate, as well as a right rotating shaft and a right control plate, which are rotatably connected to the left and right sides of the material outlet, respectively. Locking elements are provided on the left and right control plates, either individually or between them. This structural design facilitates flexible control of material discharge.

[0039] Preferably, the conveying mechanism is a conveyor belt with several drainage holes. The conveying mechanism's rotation speed is controlled by a servo motor, thereby controlling the acid treatment time of the fresh fruit. The drainage holes, in conjunction with the rotation speed of the conveying mechanism, can precisely match the acid treatment process and control the acid treatment time.

[0040] Preferably, the rotational speed of the conveying mechanism is 0.3-0.5 m / min.

[0041] Preferably, the acid treatment mechanism is equipped with a PLC controller, a temperature sensor, and an acid addition pump. The pH sensor, the servo motor of the conveying mechanism, the temperature sensor, and the acid addition pump are all electrically connected to the controller.

[0042] Preferably, the transfer box includes a box body and a bottom plate disposed within the box body. The bottom plate is circumferentially slidably and sealed to the box body and is provided with a lifting and adjusting mechanism to adjust the tilt angle of the bottom plate. The buffer rib is disposed on the bottom plate. This design of the transfer box and buffer rib can meet the processing needs of different fresh fruits and can freely adjust and control the discharge speed according to the actual situation, ensuring production efficiency.

[0043] Preferably, at least two sets of spraying mechanisms are arranged side by side along the width of the neutralization and dilution treatment tank, namely a first spraying mechanism and a second spraying mechanism, wherein the water spraying volume of the first spraying mechanism is greater than that of the second spraying mechanism.

[0044] Preferably, the neutralization and dilution treatment tank has independent spray water storage chambers corresponding to the first and second spray mechanisms. Each spray water storage chamber is equipped with a level sensor and a pH sensor, which are electrically connected to the controller. This achieves two-stage spraying, improves product quality, and enables graded recycling of the spray water for reuse, resulting in good environmental performance.

[0045] Preferably, the neutralization and dilution treatment tank is equipped with a neutralization water circulation channel, which allows the neutralization and dilution water to circulate. This circulation ensures the water fully contacts the fresh fruit, achieving thorough dilution and preventing stagnant water from affecting the neutralization and dilution effect.

[0046] Preferably, the material inlet of the neutralization and dilution treatment tank is further equipped with a control valve. The control valve controls the opening and closing of the material inlet using a double-door design. The control valve includes a left rotating shaft and a left control plate, as well as a right rotating shaft and a right control plate, which are rotatably connected to the left and right sides of the material inlet, respectively. Locking elements are provided on the left and right control plates, either individually or between them. This enables intermittent neutralization and dilution treatment, facilitating intermittent operation.

[0047] Preferably, the conveying mechanism uses a stainless steel conveyor belt with several drainage holes. The conveying mechanism's rotation speed is controlled by a servo motor, thereby controlling the neutralization and dilution treatment time of the fresh fruit.

[0048] Preferably, the rotational speed of the conveying mechanism is 0.4-0.6 m / min.

[0049] Preferably, the neutralization and dilution treatment tank is equipped with an automatic drainage and water replenishment mechanism in parallel, which is connected to the neutralization and dilution treatment water tank and the water replenishment tank respectively through pipelines with control valves, and the control valves are electrically connected to the controller.

[0050] Preferably, the neutralization and dilution treatment tank includes a tank body and a bottom plate disposed in the tank body. The bottom plate is circumferentially slidably and sealed to the tank body, and is provided with a lifting and adjusting mechanism to adjust the height of the bottom plate, thereby adjusting the liquid level in the tank body.

[0051] Preferably, the conveyor belt of the conveying mechanism is mesh-shaped and has several receiving plates along its width. The receiving plates can flip back and forth relative to the conveying mechanism. The receiving plates slide with the transmission mechanism, causing the fresh fruit material to move within the alkali treatment tank. When in the lifting section, the receiving plates can fix the collected fresh fruit material, preventing the material from flowing back into the alkali treatment tank and causing over-alkali treatment.

[0052] Preferably, the alkali treatment tank has grooves or slide rails on both sides along its length, and the third conveying mechanism has corresponding slide rails or grooves on both sides. Through the cooperation of the grooves and slide rails, the conveying mechanism slides cyclically relative to the alkali treatment tank under the action of the drive motor. This conveying structure allows for gentle and stable operation within the alkali treatment tank, avoiding large collisions between fresh fruits.

[0053] Preferably, the receiving plate has rotating shafts or shaft cavities at both ends, and the third conveying mechanism has corresponding matching shaft cavities or rotating shafts on both sides. The receiving plate also has a rotation adjustment structure, which allows for the tilting adjustment of the receiving plate through the cooperation of the rotating shafts and shaft cavities. The tilting angle of the receiving plate can be adjusted as needed to accommodate different residence times of fresh fruit in the alkali treatment tank. When a shorter alkali treatment time is required, the receiving plate is raised to quickly remove as much of the processed material as possible. When a longer alkali treatment time is required, the receiving plate is lowered, and the material moves slowly to meet the required residence time for alkali treatment.

[0054] Preferably, the alkali treatment tank is equipped with an alkali treatment water circulation channel, which ensures that the alkali treatment water circulates continuously. This circulation ensures the water fully contacts the fresh fruit, achieving thorough alkali treatment and preventing stagnant water from affecting the treatment effect.

[0055] Preferably, the material inlet of the alkali treatment tank is further equipped with a third control valve. The control valve controls the opening and closing of the material inlet using a double-door design. The third control valve includes a left rotating shaft and a left control plate, as well as a right rotating shaft and a right control plate, which are rotatably connected to the left and right sides of the material inlet, respectively. Locking elements are provided on the left and right control plates, either individually or between them. This enables intermittent neutralization and dilution treatment, facilitating intermittent operation.

[0056] Preferably, the third conveying mechanism is a stainless steel mesh conveyor belt, and the drive motor of the third conveying mechanism is a servo motor, thereby controlling its rotation speed and controlling the alkali treatment time of the fresh fruit.

[0057] Preferably, the rotational speed of the third conveying mechanism is 0.4-0.6 m / min.

[0058] Preferably, the alkali treatment tank is equipped with an automatic drainage mechanism and a water replenishment mechanism in parallel, which are connected to the alkali treatment water tank and the water replenishment water tank respectively through pipelines with control valves, and the control valves are electrically connected to the controller.

[0059] Preferably, the controller is a PLC controller and is electrically connected to an alarm device, which is an audible alarm and / or a visual alarm.

[0060] The beneficial effects of this invention are:

[0061] This invention relates to a pretreatment system for whole fresh fruit in fruit processing, which is designed to complement an enzyme treatment method for whole fresh fruit in fruit processing. Harvested whole fruit is perforated with 1cm diameter holes and 0.5-1cm depth at both the stem and tail ends. The whole fruit is then placed in a mesh sleeve and then into a tank. Enzymatic hydrolysate is added, and the temperature, pressure, and pH are adjusted for enzymatic hydrolysis. The hydrolysate contacts the fresh fruit through the inlet channel of the mesh sleeve and penetrates into the pulp through the perforation holes, hydrolyzing the internal tissues except for the pulp. This treatment system has a reasonable structural design, is convenient for feeding and unloading, and allows for easy control of enzymatic hydrolysis process parameters. It allows for a large feeding capacity, with the mesh sleeve volume being roughly equivalent to the tank's internal cavity volume, preventing damage to individual fresh fruits. After being placed in the mesh sleeve, the fresh fruits remain static, preventing collisions or other damage.

[0062] After enzymatic hydrolysis, the fruit is poured into a transfer tank and then introduced into an acid treatment tank through the material outlet. The acid treatment solution in the tank has been prepared in advance, and the pH and temperature of the acid treatment have been adjusted. The fresh fruit is carried through the acid treatment tank by the rotation of the conveyor mechanism. The acid treatment time is controlled based on the rotation speed of the conveyor mechanism. At the end of the acid treatment, the fresh fruit is separated from the acid treatment solution by the lifting of the conveyor mechanism to avoid excessive acid treatment affecting the quality. All contact parts have a rounded transition structure to prevent the fresh fruit from being bumped or scratched by the parts and damaged.

[0063] After acid treatment, the fresh fruit is introduced into the neutralization and dilution treatment tank through the material inlet. The tank is pre-prepared with a neutralization and dilution solution, usually water, and the temperature is adjusted. The fresh fruit is carried through the neutralization and dilution treatment tank by the rotation of the conveyor mechanism. The neutralization and dilution treatment time is controlled based on the rotation speed of the conveyor mechanism. At the end of the neutralization and dilution treatment, the fresh fruit is separated from the neutralization and dilution treatment solution by the lifting of the conveyor mechanism. Finally, the fruit is diluted by spraying through the spraying mechanism.

[0064] After neutralization, the fresh fruit is introduced into the alkali treatment tank through the material inlet. The tank contains a pre-prepared alkali treatment solution, typically water, with the temperature regulated. A conveyor mechanism rotates, carrying the fresh fruit through the tank. The alkali treatment time is controlled by the conveyor's rotation speed. At the end of the alkali treatment process, an elevator separates the fresh fruit from the alkali treatment solution. Therefore, the alkali treatment mechanism has a reasonable structural design, matching the enzymatic hydrolysis process of the fresh fruit, ensuring high-quality raw materials and balancing product quality with efficiency. Attached Figure Description

[0065] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0066] Figure 1 This is a schematic diagram of the structure of the present invention.

[0067] Figure 2 This is a schematic diagram of the structure of the present invention;

[0068] Figure 3 This is a schematic diagram of the structure of the present invention;

[0069] Figure 4 This is a schematic diagram of the structure of the present invention;

[0070] Figure 5 This is a schematic diagram of the structure of the present invention;

[0071] Figure 6 This is a schematic diagram of the structure of the present invention.

[0072] In the diagram: 1. Tank body, 2. Cover, 3. Mesh sleeve, 4. Liquid inlet channel, 5. Fixed beam, 6. Lifting mechanism, 7. Mesh sleeve cover A, 8. Mesh sleeve cover B, 9. Discharge plate, 10. Discharge handle, 11. Limiting component, 12. Manhole;

[0073] b1, transfer box; b11, material outlet; b12, first control valve; b13, buffer rib; b2, acid treatment tank; b3, first conveying mechanism; b4, first lifting and adjusting mechanism; b5, first pH sensor.

[0074] c1, neutralization and dilution treatment tank; c11, material inlet; c12, second control valve; c, bottom plate; c3, controller; c4, spraying mechanism; c5, second conveying mechanism; c6, liquid level sensor; c7, second pH sensor; c8, second temperature sensor; c9, neutralization circulating water circuit; c10, second lifting and adjusting mechanism.

[0075] d1, Alkali treatment tank; d11, Material inlet; d12, Third control valve; d4, Storage silo; d5, Third conveying mechanism; d51, Conveying section; d52, Lifting section; d53, Receiving plate; d6, Drainage hole; d7, Third pH sensor; d8, Third temperature sensor; d9, Alkali treatment water circulation circuit. Detailed Implementation

[0076] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0077] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0078] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0079] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0080] like Figure 1-6 As shown, the fresh fruit pretreatment system for fruit processing includes a controller (C3), an enzymatic hydrolysis tank, an acid treatment unit, a neutralization and dilution unit, and an alkali treatment unit.

[0081] The enzymatic hydrolysis tank includes a tank body 1 and a cover 2. The cover 2 is rotatably connected to the tank body 1 through a first rotation control structure and can be flipped relative to the tank body 1 to open or close the inner cavity of the tank body 1. The cover 2 is provided with a manhole 12 and several electrically controlled valves and / or sensor interfaces. A mesh sleeve 3 is detachably provided inside the tank body 1. The mesh sleeve 3 is provided with several liquid inlet channels 4 around its circumference. The top of the mesh sleeve 3 is provided with a mesh sleeve cover, which is rotatably connected through a second rotation control structure and can be flipped relative to the mesh sleeve 3 to open or close the inner cavity of the mesh sleeve 3. The bottom of the mesh sleeve 3 is provided with a discharge mechanism. The inner cavity of the mesh sleeve 3 is connected to the inner cavity of the tank body 1 through the liquid inlet channels 4.

[0082] The acid treatment mechanism includes a transfer box b1, an acid treatment tank b2, and a first conveying mechanism b3. The transfer box b1 is provided with a material outlet b11, which is located at the feed end of the acid treatment tank b2. The conveying mechanism is arranged along the length of the acid treatment tank b2 and can rotate cyclically relative to the acid treatment tank b2. The material outlet b11 of the transfer box b1 is inclined towards the feed end of the acid treatment tank b2 and is also provided with a first control valve b12. The angle between the material outlet b11 and the contact surface of the acid treatment tank b2 is an obtuse angle, and the contact part has a rounded transition structure. The first conveying mechanism b3 is inclined at an acute angle upward relative to the acid treatment tank b2 from the feed end to the discharge end. The acid treatment tank b2 is provided with a matching first pH sensor b13.

[0083] The neutralization and dilution treatment mechanism includes a spraying mechanism c4, a neutralization and dilution treatment tank c1, and a second conveying mechanism c5. The second conveying mechanism c5 is arranged along the length of the neutralization and dilution treatment tank c1 and can rotate cyclically relative to the neutralization and dilution treatment tank c1. The second conveying mechanism c5 is inclined at an acute angle upward relative to the neutralization and dilution treatment tank c1 from the feed end to the discharge end. The neutralization and dilution treatment tank c1 is equipped with a matching second pH value sensor c7 and a second temperature sensor c8. The spraying mechanism c4 is located at the discharge end of the second conveying mechanism c5 and is equipped with several spray heads. The opening of the spraying mechanism c4 is controlled by a second solenoid valve d12. The second pH value sensor c7, the second temperature sensor c8, the drive motor of the second conveying mechanism c5, and the second solenoid valve d12 of the spraying mechanism c4 are all electrically connected to the controller c3.

[0084] The alkali treatment mechanism includes an alkali treatment tank d1 and a third conveying mechanism d5. The third conveying mechanism d5 is arranged along the length of the alkali treatment tank d1 and can slide cyclically relative to the alkali treatment tank d1.

[0085] The alkali treatment tank d1 is equipped with a suitable third pH sensor d7 and a third temperature sensor d8. The drive motors of the third pH sensor d7, the third temperature sensor d8, and the third conveying mechanism d5 are all electrically connected to the controller c3. The third conveying mechanism d5 includes a conveying section d51 located inside the alkali treatment tank d1 and a lifting section d52 that slopes upward from the end of the alkali treatment tank d1. The conveying section d51 slopes upward at an acute angle relative to the alkali treatment tank d1 from the feed end to the discharge end. The tail end of the lifting section d52 is equipped with a storage bin.

[0086] Specifically, the shape of the mesh sleeve 3 is adapted to the shape of the inner cavity of the tank body 1, and the gap between the mesh sleeve 3 and the inner cavity of the tank body 1 is 10-15cm. The mesh sleeve cover and the unloading mechanism are also provided with a liquid inlet channel 4. The liquid inlet channel 4 is a circular, elliptical, triangular or polygonal liquid inlet hole, and the liquid inlet cross-sectional area of ​​the liquid inlet hole is ∈ [10cm²]. 2 150cm 2 ].

[0087] Specifically, the top of the net sleeve 3 is provided with a fixed beam 5, the fixed beam 5 is provided with a hoisting mechanism 6, the net sleeve cover includes a net sleeve cover A7 and a net sleeve cover A8, the second rotation control structure includes a second rotation control structure A and a second rotation control structure B, the net sleeve cover A7 cooperates with the second rotation control structure A and is located on one side of the fixed beam 5, the net sleeve cover A8 cooperates with the second rotation control structure B and is located on the other side of the fixed beam 5, and also includes a locking structure A and a locking structure B, which are used to lock and fix the net sleeve cover A7 and the net sleeve cover A8 after they are closed, respectively. The hoisting mechanism 6 is rotatably connected to the fixed beam 5 and can flip the net sleeve cover A7 and / or the net sleeve cover A8.

[0088] Specifically, the unloading mechanism includes an unloading plate, an unloading handle 10, and a limiting member 11. The unloading plate is adapted to the bottom cross-section of the mesh sleeve 3 and is rotatably connected through a third rotation control structure. The unloading handle 10 is fixed to the side wall of the unloading plate. The limiting member 11 is provided on the bottom side of the mesh sleeve 3. The unloading plate can be flipped by the unloading handle 10. The unloading plate can be locked by the cooperation between the unloading handle 10 and the limiting member 11. The unloading handle 10 is rotatably connected to the unloading plate through a fourth rotation control structure. The limiting member 11 is provided with a sliding groove. After the unloading handle 10 rotates relative to the unloading plate, it slides into the sliding groove to achieve locking and limiting. After the unloading handle 10 slides out of the sliding groove, it can open the unloading plate.

[0089] Specifically, the tank body 1, the cover body 2, and the mesh sleeve 3 are all made of food-grade stainless steel. The tank body 1 is equipped with a jacket or an outer coil. The sensor interfaces provided on the cover body 2 include a temperature sensor interface, a pressure sensor interface, and a pH sensor interface. The electrically controlled valves provided include an enzyme preparation addition control valve and a pH adjuster addition control valve.

[0090] Specifically, the transfer box b1 is provided with at least one buffer ridge b13 along its width direction. The surface of the buffer ridge b13 is arc-shaped, and the radial height of the buffer ridge b13 is 2-4 cm. The material outlet b11 of the transfer box b1 is inclined at an angle of 10-20° towards the feed end of the acid treatment tank b2, and the included angle between the material outlet b11 and the contact surface of the acid treatment tank b2 is 150-155°.

[0091] Specifically, the material outlet b11 of the transfer box b1 is inclined at an angle of 15° towards the feed end of the acid treatment tank b2, and the included angle between the material outlet b11 and the contact surface of the acid treatment tank b2 is 155°. The first control valve b12 controls the opening and closing of the material outlet b11 using a double-door design. The first control valve b12 includes a left rotating shaft, a left control plate, a right rotating shaft, and a right control plate, which are rotatably connected to the left and right sides of the material outlet b11, respectively. Locking elements are provided on the left and right control plates, either individually or between them. The first conveying mechanism b3 uses a conveyor belt with several drainage holes d6. The first conveying mechanism b3 controls its rotation speed through a servo motor, thereby controlling the acid treatment time of the fresh fruit. The rotation speed of the first conveying mechanism b3 is 0.3-0.5 m / min. The transfer box b1 includes a box body and a bottom plate c inside the box body. The bottom plate c is circumferentially slidably and sealed to the box body, and is provided with a first lifting adjustment mechanism b4 to adjust the tilt angle of the bottom plate c. The buffer rib b13 is provided on the bottom plate c.

[0092] Specifically, at least two sets of spraying mechanisms c4 are arranged side-by-side along the width of the neutralization and dilution treatment tank c1, namely a first spraying mechanism c4 and a second spraying mechanism c4. The spraying volume of the first spraying mechanism c4 is greater than that of the second spraying mechanism c4. Within the neutralization and dilution treatment tank c1, there are independent spray water storage chambers corresponding to the first and second spraying mechanisms c4. Each spray water storage chamber is equipped with a level sensor c6 and a second pH sensor c7, which are electrically connected to a controller c3. A neutralization water circulation path c9 is provided within the neutralization and dilution treatment tank c1, allowing the neutralization and dilution water to circulate. The material inlet c11 of the neutralization and dilution treatment tank c1 is also equipped with a second control valve c12. The second control valve c12 uses a double-door design to control the opening and closing of the material inlet. The second control valve c12 includes a left... The rotating shaft, left control plate, right rotating shaft, and right control plate are rotatably connected to the left and right sides of the material inlet, respectively. Locking devices are provided on the left and right control plates, respectively or between them. The second conveying mechanism c5 adopts a stainless steel conveyor belt, which has several drainage holes d6. The rotation speed of the second conveying mechanism c5 is controlled by a servo motor, thereby controlling the neutralization and dilution treatment time of the fresh fruit. The rotation speed of the conveying mechanism is 0.4-0.6 m / min. The neutralization and dilution treatment tank c1 is equipped with an automatic drainage and water replenishment mechanism in parallel, which is connected to the neutralization and dilution treatment water tank and the water replenishment water tank through pipelines with control valves, respectively. The control valves are electrically connected to the controller c3. The neutralization and dilution treatment tank c1 includes a tank body and a bottom plate c located in the tank body. The bottom plate c is circumferentially slidably sealed to the tank body and is provided with a lifting adjustment mechanism to adjust the height of the bottom plate c, thereby adjusting the liquid level in the tank.

[0093] Specifically, the conveyor belt of the third conveying mechanism d5 is grid-shaped and has several receiving plates d53 along its width. The receiving plates d53 can flip back and forth relative to the third conveying mechanism d5. The alkali treatment tank d1 has grooves or rails along its length on both sides. The third conveying mechanism d5 has corresponding matching rails or grooves on both sides. Through the cooperation of the grooves and rails, the receiving plates slide cyclically relative to the alkali treatment tank d1 under the action of the drive motor. The receiving plates d53 have rotating shafts or shaft cavities at both ends. The third conveying mechanism d5 has corresponding matching shaft cavities or rotating shafts on both sides. The receiving plates d53 also have a rotation adjustment structure. Through the cooperation of the rotating shafts and shaft cavities, the flipping adjustment of the receiving plates d53 is achieved. The alkali treatment tank d1 is equipped with an alkali treatment water circulation channel d9, which allows the alkali treatment water to circulate. The alkali treatment tank d1 is equipped with a control valve at its material inlet c11. The third control valve d12 controls the opening and closing of the material inlet using a double-door design. The third control valve includes a left rotating shaft, a left control plate, a right rotating shaft, and a right control plate, which are rotatably connected to the left and right sides of the material inlet, respectively. Locking elements are provided on the left and right control plates, either individually or between them. The third conveying mechanism d5 uses a stainless steel mesh belt conveyor. The drive motor of the third conveying mechanism d5 is a servo motor, which controls its rotation speed and the alkali treatment time of the fresh fruit. The rotation speed of the third conveying mechanism d5 is 0.4-0.6 m / min. The alkali treatment tank d1 is equipped with an automatic drainage mechanism and a water replenishment mechanism in parallel, which are connected to the alkali treatment water tank and the water replenishment water tank through pipelines with electrically controlled valves. The electrically controlled valves are electrically connected to the controller c3.

[0094] Specifically, the controller c3 is a PLC controller c3 and is electrically connected to an alarm device, which is a sound alarm and / or a light alarm.

[0095] In this embodiment, the first rotation control structure, the second rotation control structure, the third rotation control structure, and the fourth rotation control structure adopt common rotating shaft or hinge structures in the mechanical field, which are conventional technical means and will not be described in detail. The above-described embodiments are only a preferred solution of the present invention and are not intended to limit the present invention in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A pretreatment system for whole fresh fruit for fruit processing, comprising a controller (C3), an enzymatic hydrolysis tank, an acid treatment unit, a neutralization and dilution unit, and an alkali treatment unit, characterized in that, The enzymatic hydrolysis tank includes a tank body (1) and a cover (2). The cover (2) is rotatably connected to the tank body (1) through a first rotation control structure and can be flipped relative to the tank body (1) to open or close the inner cavity of the tank body (1). The cover (2) is provided with a manhole (12) and several electronically controlled valves and / or sensor interfaces. The tank body (1) is detachably provided with a mesh sleeve (3). The mesh sleeve (3) is provided with several liquid inlet channels (4) in the circumferential direction. The top of the mesh sleeve (3) is provided with a mesh sleeve cover, which is rotatably connected through a second rotation control structure and can be flipped relative to the mesh sleeve (3) to open or close the inner cavity of the mesh sleeve (3). The bottom of the mesh sleeve (3) is provided with a discharge mechanism. The inner cavity of the mesh sleeve (3) is connected to the inner cavity of the tank body (1) through the liquid inlet channels (4). The acid treatment mechanism includes a transfer box (b1), an acid treatment tank (b2), and a first conveying mechanism (b3). The transfer box (b1) has a material outlet (b11) located at the feed end of the acid treatment tank (b2). The conveying mechanism is arranged along the length of the acid treatment tank (b2) and can rotate cyclically relative to the acid treatment tank (b2). The material outlet (b11) of the transfer box (b1) is inclined toward the feed end of the acid treatment tank (b2) and is also provided with a first control valve (b12). The angle between the material outlet (b11) and the contact surface of the acid treatment tank (b2) is obtuse, and the contact part has a rounded transition structure. The first conveying mechanism (b3) is inclined at an acute angle upward relative to the acid treatment tank (b2) from the feed end to the discharge end. The acid treatment tank (b2) is provided with a suitable first pH sensor (b13). The neutralization and dilution treatment mechanism includes a spraying mechanism (c4), a neutralization and dilution treatment tank (c1), and a second conveying mechanism (c5). The second conveying mechanism (c5) is arranged along the length of the neutralization and dilution treatment tank (c1) and can rotate cyclically relative to the neutralization and dilution treatment tank (c1). The second conveying mechanism (c5) is inclined at an acute angle upward relative to the neutralization and dilution treatment tank (c1) from the feed end to the discharge end. The neutralization and dilution treatment tank (c1) is equipped with a matching second pH sensor (c7) and a second temperature sensor (c8). The spraying mechanism (c4) is located at the discharge end of the second conveying mechanism (c5) and is equipped with several spray heads. The opening of the spraying mechanism (c4) is controlled by a second electric control valve (d12). The drive motors of the second pH sensor (c7), the second temperature sensor (c8), the second conveying mechanism (c5), and the second electric control valve (d12) of the spraying mechanism (c4) are all electrically connected to the controller (c3). The alkali treatment mechanism includes an alkali treatment tank (d1) and a third conveying mechanism (d5). The third conveying mechanism (d5) is arranged along the length of the alkali treatment tank (d1) and can slide cyclically relative to the alkali treatment tank (d1). The alkali treatment tank (d1) is equipped with a suitable third pH sensor (d7) and a third temperature sensor (d8). The drive motors of the third pH sensor (d7), the third temperature sensor (d8), and the third conveying mechanism (d5) are all electrically connected to the controller (c3). The third conveying mechanism (d5) includes a conveying section (d51) located in the alkali treatment tank (d1) and a lifting section (d52) that slopes upward from the end of the alkali treatment tank (d1). The conveying section (d51) slopes upward at an acute angle relative to the alkali treatment tank (d1) from the feed end to the discharge end. The tail end of the lifting section (d52) is equipped with a storage bin.

2. The fresh fruit pretreatment system for fruit granule processing according to claim 1, characterized in that: The shape of the mesh sleeve (3) is adapted to the shape of the inner cavity of the tank body (1), and the gap between the mesh sleeve cover and the inner cavity of the tank body (1) is 10-15cm. The mesh sleeve cover and the unloading mechanism are also provided with liquid inlet channels (4). The liquid inlet channels (4) are circular, elliptical, triangular or polygonal liquid inlet holes, and the liquid inlet cross-sectional area of ​​the liquid inlet hole is ∈ [10cm²]. 2 150cm 2 ].

3. The fresh fruit whole fruit pretreatment system for fruit granule processing according to claim 1 or 2, characterized in that: The top of the net cover (3) is provided with a fixed beam (5), and the fixed beam (5) is provided with a hoisting mechanism (6). The net cover includes a net cover A (7) and a net cover A (8). The second rotation control structure includes a second rotation control structure A and a second rotation control structure B. The net cover A (7) cooperates with the second rotation control structure A and is located on one side of the fixed beam (5). The net cover A (8) cooperates with the second rotation control structure B and is located on the other side of the fixed beam (5). It also includes a locking structure A and a locking structure B, which are used to lock and fix the net cover A (7) and the net cover A (8) after they are closed. The hoisting mechanism (6) is rotatably connected to the fixed beam (5) and can flip the net cover A (7) and / or the net cover A (8).

4. The fresh fruit whole fruit pretreatment system for fruit granule processing according to claim 1 or 2, characterized in that: The unloading mechanism includes an unloading plate, an unloading handle (10), and a limiting member (11). The unloading plate is adapted to the bottom cross-section of the mesh sleeve (3) and is rotatably connected through a third rotation control structure. The unloading handle (10) is fixed to the side wall of the unloading plate. The limiting member (11) is provided with the bottom side of the mesh sleeve (3). The unloading plate can be flipped through the unloading handle (10). The unloading plate can be locked through the cooperation between the unloading handle (10) and the limiting member (11). The unloading handle (10) is rotatably connected to the unloading plate through a fourth rotation control structure. The limiting member (11) is provided with a sliding groove. After the unloading handle (10) rotates relative to the unloading plate, it slides into the sliding groove to achieve locking and limiting. After the unloading handle (10) slides out of the sliding groove, it can open the unloading plate.

5. The fresh fruit whole fruit pretreatment system for fruit granule processing according to claim 1 or 2, characterized in that: The tank (1), cover (2) and mesh sleeve (3) are all made of food-grade stainless steel. The tank (1) is equipped with a jacket or outer coil. The sensor interfaces provided on the cover (2) include a temperature sensor interface, a pressure sensor interface, and a pH sensor interface. The electrically controlled valves provided include an enzyme preparation addition control valve and a pH adjuster addition control valve.

6. The fresh fruit whole fruit pretreatment system for fruit granule processing according to claim 1 or 2, characterized in that: The transfer box (b1) is provided with at least one buffer ridge (b13) along its width direction. The surface of the buffer ridge (b13) is arc-shaped, and the radial height of the buffer ridge (b13) is 2-4 cm. The material outlet (b11) of the transfer box (b1) is inclined at an angle of 10-20° towards the feed end of the acid treatment tank (b2), and the included angle between the material outlet (b11) and the contact surface of the acid treatment tank (b2) is 150-155°.

7. The fresh whole fruit pretreatment system for fruit granule processing according to claim 6, characterized in that: The material outlet (b11) of the transfer box (b1) is inclined at an angle of 15° towards the feed end of the acid treatment tank (b2), and the included angle between the contact surface of the material outlet (b11) and the acid treatment tank (b2) is 155°. The first control valve (b12) controls the opening and closing of the material outlet (b11) in a double-door manner. The first control valve (b12) includes a left rotating shaft, a left control plate, a right rotating shaft, and a right control plate, which are rotatably connected to the left and right sides of the material outlet (b11), respectively. Locking elements are provided on the left and right control plates, respectively or between them. The first conveyor... The structure (b3) adopts a conveyor belt, which is provided with several drainage holes (d6). The first conveying mechanism (b3) controls its rotation speed through a servo motor, thereby controlling the acid treatment time of the fresh fruit. The rotation speed of the first conveying mechanism (b3) is 0.3-0.5 m / min. The transfer box (b1) includes a box body and a bottom plate (c) provided in the box body. The bottom plate (c) is circumferentially slidably sealed to the box body and is provided with a first lifting adjustment mechanism (b4) to adjust the tilt angle of the bottom plate (c). The buffer rib (b13) is provided on the bottom plate (c).

8. The fresh fruit whole fruit pretreatment system for fruit granule processing according to claim 1 or 2, characterized in that: At least two sets of spraying mechanisms (c4) are arranged side-by-side along the width of the neutralization and dilution treatment tank (c1), namely a first spraying mechanism (c4) and a second spraying mechanism (c4). The spraying volume of the first spraying mechanism (c4) is greater than that of the second spraying mechanism (c4). Within the neutralization and dilution treatment tank (c1), there are independent spray water storage chambers corresponding to the first and second spraying mechanisms (c4). Each spray water storage chamber is equipped with a level sensor (c6) and a second pH sensor (c7), which are electrically connected to a controller (c3). A neutralization water circulation path (c9) is provided within the neutralization and dilution treatment tank (c1) to circulate the neutralization and dilution water. A second control valve (c12) is also provided at the material inlet (c11) of the neutralization and dilution treatment tank (c1). The second control valve (c12) controls the opening and closing of the material inlet using a double-door design. (c12) includes a left rotating shaft, a left control plate, a right rotating shaft, and a right control plate, which are rotatably connected to the left and right sides of the material inlet, respectively. Locking devices are provided on the left and right control plates, respectively or between them. The second conveying mechanism (c5) adopts a stainless steel conveyor belt, which is provided with several drainage holes (d6). The second conveying mechanism (c5) controls its rotation speed through a servo motor, thereby controlling the neutralization and dilution treatment time of the fresh fruit. The rotation speed of the conveying mechanism is 0.4-0.6 m / min. The neutralization and dilution treatment tank (c1) is provided with an automatic drainage and water replenishment mechanism in parallel, which are connected to the neutralization and dilution treatment water tank and the water replenishment water tank through pipelines with control valves, respectively. The control valves are electrically connected to the controller (c3). The neutralization and dilution treatment tank (c1) includes a tank body and a bottom plate (c) located in the tank body. The bottom plate (c) is circumferentially slidably sealed to the tank body and is provided with a lifting adjustment mechanism to adjust the height of the bottom plate (c), thereby adjusting the liquid level in the tank body.

9. The fresh fruit whole fruit pretreatment system for fruit granule processing according to claim 1 or 2, characterized in that: The conveyor belt of the third conveying mechanism (d5) is grid-shaped and has several receiving plates (d53) along its width. The receiving plates (d53) can flip back and forth relative to the third conveying mechanism (d5). The alkali treatment tank (d1) has grooves or slide rails on both sides along its length. The third conveying mechanism (d5) has corresponding slide rails or grooves on both sides. Through the cooperation of the grooves and slide rails, the receiving plates slide cyclically relative to the alkali treatment tank (d1) under the action of the drive motor. The receiving plates (d53) have rotating shafts or shaft cavities at both ends. The third conveying mechanism (d5) has corresponding shaft cavities or rotating shafts on both sides. The receiving plates (d53) also have a rotation adjustment structure. Through the cooperation of the rotating shafts and shaft cavities, the flipping adjustment of the receiving plates (d53) is realized. The alkali treatment tank (d1) is provided with an alkali treatment water circulation channel (d9). The alkali treatment water circulation channel (d9) allows the alkali to be circulated through the alkali treatment water. The treatment water is circulated. The material inlet (c11) of the alkali treatment tank (d1) is also equipped with a control valve. The third control valve (d12) uses a double-door design to control the opening and closing of the material inlet. The third control valve includes a left rotating shaft, a left control plate, a right rotating shaft, and a right control plate, which are rotatably connected to the left and right sides of the material inlet, respectively. Locking elements are provided on the left and right control plates, respectively or between them. The third conveying mechanism (d5) uses a stainless steel mesh belt conveyor. The drive motor of the third conveying mechanism (d5) is a servo motor, which controls its rotation speed and the alkali treatment time of the fresh fruit. The rotation speed of the third conveying mechanism (d5) is 0.4-0.6 m / min. The alkali treatment tank (d1) is equipped with an automatic drainage mechanism and a water replenishment mechanism in parallel. They are connected to the alkali treatment water tank and the water replenishment water tank through pipelines with electrically controlled valves, respectively. The electrically controlled valves are electrically connected to the controller (c3).

10. The fresh fruit whole fruit pretreatment system for fruit granule processing according to claim 1 or 2, characterized in that: The controller (c3) is a PLC controller (c3) and is electrically connected to an alarm device, which is a sound alarm and / or a light alarm.

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