Fruit slice freeze-drying process based on moisture migration optimization

Abstract

The invention discloses a fruit slice freeze-drying process based on moisture migration optimization. The fruit slice freeze-drying process comprises the following steps: step 1, soaking; step 2, slicing; step 3, pre-treating; wherein the freeze-drying frame comprises a frame body and a plurality of bearing assemblies installed in cooperation with the frame body, and a bearing disc and fixing pieces arranged on the two sides of the bearing disc are arranged in each bearing assembly. According to the fruit slice freeze-drying process based on moisture migration optimization, it can be guaranteed that the color, fragrance, taste, shape and nutritional ingredients of fresh fruits can be kept for the fruit slices, the moisture content of the freeze-dried fruit slices is reduced, and the preservation time of products is prolonged. And meanwhile, the freeze-drying frame can help workers to quickly collect freeze-dried fruit slices, the fruit slices in the vertically-arranged bearing discs can be collected from the discharging area only by pulling and pushing the bearing discs to rotate, the bearing discs do not need to be taken out independently, and the fruit slice collecting efficiency of the workers is greatly improved.

Description

Technical Field

[0001] The present invention relates to freeze-drying technology, and in particular to a freeze-drying process for fruit slices based on water migration optimization. Background Art

[0002] Due to their seasonality and short storage life, fresh fruit is often processed into lightly processed products such as preserved fruit, jam, and freeze-dried slices. These preserve the freshness of fruits and vegetables, allowing them to be consumed directly without further processing. Freeze-dried fruit slices, one of these fruit preservation technologies, are typically made from fresh fruit that has been trimmed and processed. They offer advantages such as high nutrient retention, excellent sensory quality, low calorie content, and the absence of additives.

[0003] When using vacuum freeze-drying equipment to process fruit slices, after the freeze-drying process is completed, the processed fruit slices need to be removed. When taking them out, the operator needs to pull out the trays containing fruit slices in the freeze-drying chamber one by one, and then pour the fruit slices on the trays into the collection device, and then fill the trays with fruit slices to be processed one by one, and then put them back into the drying chamber. The whole process is inefficient, which seriously affects the collection efficiency of the fruit slices. Summary of the Invention

[0004] In order to solve the defects of the above-mentioned prior art, the present invention proposes a fruit slice freeze-drying process based on moisture migration optimization.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A freeze-drying process for fruit slices based on moisture migration optimization comprises the following steps:

[0007] Step 1: Soaking: Rinse the fruit to be processed with clean water, then soak it in soaking water for 15-45 minutes. Ultrasonic equipment is used during soaking. The soaking water is a mixture of honey, rice water and clean water in a ratio of 0.3:0.5:0.2.

[0008] Step 2: Slice the fruit. Blow dry the surface moisture of the soaked fruit, then put it into the slicer for slicing. The drying temperature is 20°C and the time is 30 seconds.

[0009] Step 3: Pre-treatment: Place the sliced ​​fruit slices in a refrigerator at 0-10°C for 1-8 hours and then take them out;

[0010] Step 4: freeze-drying. Transfer the refrigerated fruit slices to a freeze-drying rack that matches the freeze-drying equipment, and then start freezing. First, cool the freezing equipment to -10-60°C and keep it for 2-8 hours. Then, evacuate it to a vacuum degree of 2-8 Pa, raise the temperature to 10-50°C, and keep it for 15-20 hours.

[0011] Wherein, the freeze-drying rack includes:

[0012] The frame is composed of symmetrically arranged mounting plates and guard plates arranged on both sides of the mounting plates, and the symmetrically arranged mounting plates are connected by reinforcement rods;

[0013] Multiple bearing components are installed in conjunction with the frame, and the bearing components are evenly arranged on the mounting plate from top to bottom. The bearing components are provided with a bearing plate and fixing parts arranged on both sides of the bearing plate. The bearing plate is hinged to the fixing part through a rotating part. The bearing plate is pulled to keep the bearing plate rotating on the fixing part through the rotating part, and the tilted and retracted bearing plate is changed to a horizontal state.

[0014] In the present invention, the mounting plate is provided with a first mounting hole and a second mounting hole, the first mounting hole is a through hole, and a closing portion is further provided at the lower end of the second mounting hole, and a third mounting hole is formed inside the closing portion.

[0015] In the present invention, the fixing member is composed of a fixing plate and a bearing rod. The fixing plate is installed in conjunction with the mounting plate. The bearing rod is used to support the bearing disc and limit the tilt angle of the bearing disc at the lower end to rotate upward.

[0016] In the present invention, a strip hole is provided on the fixed plate, a retaining member is provided in the strip hole, the rotating member is arranged in the strip hole, the retaining members are connected to each other through a limiting rod, and the rotating member is connected to the carrying plate, and the carrying plate is kept rotating and moving in the strip hole through the rotating member.

[0017] In the present invention, a bearing area is formed in the middle of the bearing plate, and the bearing area is open toward one side of the mounting plate. Symmetrically arranged bearing blocks are provided on both sides of the bearing plate, and the bearing blocks cooperate with the fixing parts to limit the position of the bearing plate. A first positioning pin is provided on the mounting plate, and a second positioning pin cooperating with the first positioning pin is provided on the bearing plate. The first positioning pin and the second positioning pin are connected by a tension spring.

[0018] In the present invention, the fixing plate is provided with symmetrically arranged elastic arms, the elastic arms are provided with positioning rods, and the mounting plate is provided with through holes that cooperate with the positioning rods.

[0019] In the present invention, a symmetrically arranged rotating block is provided on the carrying plate, and a hinge hole is provided on the rotating block to cooperate with the rotating member. The rotating member is composed of a hinge rod, a first rotating rod, a first limiting part, a first connecting part and a second limiting part. The hinge rod is installed in cooperation with the hinge hole, and a first limiting ring groove is formed between the first limiting part and the second limiting part. The outer wall of the rotating block is provided with a first limiting opening and a second limiting opening to cooperate with the limiting rod.

[0020] In the present invention, the retaining member is composed of a second rotating rod, a third limiting part, a second connecting part and a fourth limiting part, a second limiting ring groove is formed between the third limiting part and the fourth limiting part, and the first rotating rod and the second rotating rod are arranged in the strip hole.

[0021] In the present invention, the retaining member and the rotating member are connected by an elastic member, and the elastic member consists of a first arc segment, a second arc segment and a third arc segment. The third arc segment is connected to the first arc segment and the second arc segment by an inclined segment. A first accommodating hole is formed in the middle of the first arc segment, and the first connecting portion is located in the first accommodating hole. A second accommodating hole is formed in the middle of the second arc segment, and the second connecting portion is located in the second accommodating hole. An elastic area is formed between the first arc segment and the second arc segment.

[0022] In the present invention, a first extension portion and a second extension portion are provided on the fixing plate, a first fixing body is provided at the lower end of the first extension portion, a second fixing body is provided at the lower end of the second extension portion, the first extension portion is placed in the first mounting hole, the second extension portion is placed in the second mounting hole, and the second fixing body is placed in the third mounting hole.

[0023] The implementation of the present invention's freeze-drying process for fruit slices based on moisture migration optimization has the following beneficial effects: It ensures that the fruit slices retain the color, aroma, taste, shape, and nutritional content of fresh fruit, reduces the moisture content of the freeze-dried fruit slices, and extends the shelf life of the product. Furthermore, the freeze-drying rack helps workers quickly collect the freeze-dried fruit slices. Simply by pulling and pushing the carrier trays to rotate, the fruit slices within the vertically arranged carrier trays can be collected from the lower area of ​​the row, without having to remove the carrier trays individually. This greatly improves the efficiency of fruit slice collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the freeze-drying equipment of the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the freeze-drying rack structure;

[0026] Figure 3 for Figure 2 A top view of

[0027] Figure 4 for Figure 3 The cross-sectional view at AA in the figure;

[0028] Figure 5 for Figure 4 A local enlarged view of point B in FIG;

[0029] Figure 6 for Figure 2 Exploded diagram;

[0030] Figure 7 for Figure 6 Schematic diagram of the frame structure in ;

[0031] Figure 8 for Figure 7 Schematic diagram of the mounting plate structure;

[0032] Figure 9 for Figure 8 A local enlarged view of point C in FIG;

[0033] Figure 10 for Figure 6 Schematic diagram of the load-bearing component structure;

[0034] Figure 11 for Figure 10 Exploded diagram;

[0035] Figure 12 for Figure 11 Schematic diagram of the structure of the rotating part, the retaining part and the elastic part;

[0036] Figure 13 for Figure 11 Schematic diagram of the carrier plate structure;

[0037] Figure 14 for Figure 11 Schematic diagram of the fixing structure in FIG.

[0038] Figure 15 This is a schematic diagram of the mounting plate and fixing member structure in the present invention in an unmounted state;

[0039] Figure 16 for Figure 15 A partial enlarged view of point D in the figure.

[0040] In the figure: freeze drying equipment 1, freeze drying rack 2, sliding plate 3, frame 4, mounting plate 5, shell 6, bearing assembly 7, bearing plate 8, fixing part 9, strip hole 10, limiting rod 11, tension spring 12, rotating part 13, bearing area 14, guard plate 15, reinforcement rod 16, installation area 17, collection area 18, retaining part 19, first limiting opening 20, second limiting opening 21, bearing block 22, lower row area 23, first positioning pin 24, second positioning pin 25, small hole 26, rotating block 27, hinge hole 28, hinge rod 29, first rotating rod 30, first limiting part 31, first connecting part 32, second limiting part 33, first limiting ring groove 34, first Nut 35, second fixing body 36, first mounting hole 37, second mounting hole 38, closing portion 39, third mounting hole 40, fixing plate 41, load-bearing rod 42, elastic arm 43, positioning rod 44, through hole 45, second rotating rod 46, third limiting portion 47, second connecting portion 48, fourth limiting portion 49, second limiting ring groove 50, second nut 51, elastic member 52, first arc segment 53, second arc segment 54, third arc segment 55, inclined section 56, first accommodating hole 57, second accommodating hole 58, elastic area 59, first extension portion 60, second extension portion 61, first fixing body 62, first accommodating area 63, second accommodating area 64. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0042] like Figures 1 to 16 As shown, the freeze-drying process of fruit slices based on moisture migration optimization of the present invention comprises the following steps:

[0043] Step 1, soaking, rinse the fruit to be processed with clean water, and then soak it in soaking water for 15-45 minutes. Ultrasonic equipment is used for treatment during soaking. The soaking water is a mixture of honey, rice washing water and clean water in a ratio of 0.3:0.5:0.2.

[0044] Step 2: Slice. Blow dry the surface moisture of the soaked fruit, and then put it into the slicer for slicing. The drying temperature is 20° C. and the time is 30 seconds.

[0045] Step 3: Pre-treatment: Place the sliced ​​fruit slices in a refrigerator at 0-10° C. for 1-8 hours and then take them out.

[0046] Step 4: Freeze-drying: Transfer the refrigerated fruit slices to the freeze-drying rack 2 that matches the freeze-drying equipment 1. Then, begin freezing. First, cool the freezer to -10-60°C for 2-8 hours. Then, evacuate the freezer to a vacuum of 2-8 Pa, raise the temperature to 10-50°C, and maintain for 15-20 hours. Finally, vacuum-pack the freeze-dried fruit slices.

[0047] A sliding plate 3 is provided in the middle of the freeze-drying apparatus 1. A guide rail can be provided on the sliding plate 3. A slide seat that cooperates with the guide rail is provided at the lower end of the mounting plate 5 on the frame body 4, thereby enabling the freeze-drying rack 2 to be pushed in and pulled out. The freeze-drying apparatus 1 used in this application can be a conventional structure, so it will not be described in detail here.

[0048] At the same time, a T-shaped conveyor rack can be set at the housing 6 of the freeze-drying equipment 1, and the conveyor rack can transfer the freeze-drying rack 2. First, the vertical conveyor rack is set parallel to the axis of the housing 6 and is set in the direction of the opening of the housing 6. Then, the horizontal conveyor rack is set parallel to the axis of the housing 6. This not only makes it convenient to transfer the freeze-drying rack 2 in and out, but also makes it convenient for workers to place and collect fruit slices, which is conducive to improving the processing efficiency of the entire fruit slice.

[0049] Example 1

[0050] The freeze-drying rack 2 includes a frame body 4 and a supporting assembly 7. The supporting assembly 7 is provided in multiple locations and is evenly mounted on the frame body 4. When the supporting assembly 7 is in use, it is necessary to bend it so that the inclined supporting plate 8 changes from an inclined state to a horizontal state and is supported by the fixing member 9. After the freeze-drying is completed, the supporting plate 8 can be pushed so that the supporting plate 8 rotates in the bar-shaped hole 10, and at the same time, the supporting plate 8 is separated from the limiting rod 11, and the supporting plate 8 rotates around the rotating member 13 under the elastic force of the tension spring 12, thereby realizing that the horizontal supporting plate 8 changes to an inclined setting, thereby dumping the fruit slices in the supporting area 14, and facilitating the quick collection of the processed fruit slices.

[0051] like Figure 7 As shown, the frame 4 is composed of symmetrically arranged mounting plates 5 and guard plates 15 arranged on both sides of the mounting plates 5. The symmetrically arranged mounting plates 5 are connected by reinforcing rods 16. A mounting area 17 for the carrier assembly 7 is formed between the symmetrically arranged mounting plates 5, which allows the carrier assembly 7 to change its state, facilitating the placement or collection of fruit slices. At the same time, the tilted carrier tray 8 is also easy to clean, eliminating the need for workers to carry the carrier tray 8, saving time and improving work efficiency.

[0052] There is a distance between the mounting plate 5 and the reinforcing rod 16 used to connect the mounting plate 5. The reinforcing rod 16 here refers to the reinforcing rod 16 below the mounting plate 5. A collection area 18 is formed at the lower end of the freeze-drying rack 2 to facilitate the placement of the collection box.

[0053] The carrying component 7 is installed in conjunction with the frame 4. The carrying component 7 is provided in multiple places. The carrying component 7 is evenly arranged on the mounting plate 5 from top to bottom. The carrying component 7 is provided with a carrying plate 8 and fixing parts 9 arranged on both sides of the carrying plate 8. The carrying plate 8 is hinged to the fixing part 9 through a rotating part 13. Pulling the carrying plate 8 keeps the carrying plate 8 rotating on the fixing part 9 through the rotating part 13, and changes the inclined and retracted carrying plate 8 into a horizontal state. When changing the state of the carrying plate 8, the purpose of pulling the carrying plate 8 is to keep the carrying plate 8 driving the rotating part 13 and the retaining part 19 to move in the strip hole 10, and to stretch the tension spring 12, thereby lengthening the tension spring 12, facilitating the tension spring 12 to generate elastic potential energy and increase the elastic force. After the elastic force of the tension spring 12 is increased, the carrying plate 8 can be rotated. When the limiting rod 11 is disengaged from the first limiting opening 20 or the second limiting opening 21, the carrying plate 8 can be kept rotating around the rotating part 13 under the action of the elastic potential energy stored in the tension spring 12. Finally, the carrying block 22 on the carrying plate 8 cooperates with the fixing part 9 at the previous location, and the fixing part 9 blocks the rotation angle of the carrying plate 8, maintaining a certain gap between the carrying plates 8 and the carrying plates 8, so as to facilitate observation of whether all the fruit slices in the carrying area 14 are discharged. If not all of them are discharged, the fruit slices in the carrying area 14 can be manually pushed down with a tool.

[0054] Since there is a distance between the carrying plate 8 and the mounting plate 5, the distance forms a discharge area 23 for the fruit slices, which makes it convenient for the staff to place the collection box at the lower end of the carrying plate 8 at the lowest end, thereby realizing rapid collection of the fruit slices.

[0055] Example 2

[0056] A carrying area 14 is formed in the middle of the carrying tray 8. The carrying area 14 is open to one side of the mounting plate 5, which facilitates the dumping of fruit slices in the carrying area 14. Symmetrical carrying blocks 22 are provided on both sides of the carrying tray 8. The carrying blocks 22 cooperate with the fixing members 9 to limit the position of the carrying tray 8, so that there is a distance between the carrying trays 8. The rotation angle of the carrying tray 8 is the distance between the upper fixing member 9 and the lower fixing member 9. A fixing member 9 can also be provided on the upper end of the uppermost carrying tray 8, such as Figure 4 As shown, it is not placed in this application. In actual use, a fixing member 9 can be installed so that the rotation angle of the uppermost supporting plate 8 can be limited by the fixing member 9.

[0057] A first locating pin 24 is provided on the mounting plate 5, and a second locating pin 25 is provided on the carrier plate 8 to mate with the first locating pin 24. The first locating pin 24 and the second locating pin 25 are connected by a tension spring 12. A small hole 26 is provided on the mounting plate 5 to accommodate the tension spring 12. The first locating pin 24 is inserted into the small hole 26 to secure one end of the tension spring 12. Furthermore, the first locating pin 24 also secures the guard plates 15 on either side of the mounting plate 5, connecting them to the mounting plate 5. The guard plates 15 prevent the fruit slices from falling out of the sides during collection, hindering collection.

[0058] The carrier plate 8 is provided with a symmetrically arranged rotating block 27, which is provided with a hinge hole 28 that mates with the rotating member 13. The rotating member 13 comprises a hinge rod 29, a first rotating rod 30, a first stopper 31, a first connecting portion 32, and a second stopper 33. The hinge rod 29 is mounted in conjunction with the hinge hole 28, forming a first stopper annular groove 34 between the first stopper 31 and the second stopper 33. The outer wall of the rotating block 27 is provided with a first stopper opening 20 and a second stopper opening 21 that mate with the stopper rod 11. A first nut 35 is provided on the hinge rod 29, and the first nut 36 connects the rotating member 13 to the rotating block 27.

[0059] The mounting plate 5 is provided with a first mounting hole 37 and a second mounting hole 38 . The first mounting hole 37 is a through hole. A closing portion 39 is provided at the lower end of the second mounting hole 38 . A third mounting hole 40 is formed inside the closing portion 39 .

[0060] A first accommodating area 63 is formed between the first fixing body 62 and the fixing plate 41 , and a second accommodating area 64 is formed between the second fixing body 36 and the fixing plate 41 .

[0061] The fixing member 9 is composed of a fixing plate 41 and a bearing rod 42. The fixing plate 41 is installed in conjunction with the mounting plate 5. The bearing rod 42 is used to support the bearing tray 8 and limit the tilt angle of the bearing tray 8 at the lower end to rotate upward.

[0062] A strip hole 10 is provided on the fixed plate 41, a retaining member 19 is provided in the strip hole 10, a rotating member 13 is arranged in the strip hole 10, the retaining members 19 are connected to each other through a limiting rod 11, and the rotating member 13 is connected to the carrying plate 8, keeping the carrying plate 8 rotating and moving in the strip hole 10 through the rotating member 13.

[0063] The fixing plate 41 is provided with symmetrically arranged elastic arms 43, each of which is provided with a positioning rod 44. The mounting plate 5 is provided with a through hole 45 that cooperates with the positioning rod 44. The elastic arms 43 are deformed when subjected to force, thereby allowing the positioning rod 44 to enter the through hole 45, thereby maintaining the stability of the connection between the fixing member 9 and the mounting plate 5.

[0064] The retaining member 19 comprises a second rotation rod 46, a third limiting portion 47, a second connecting portion 48, and a fourth limiting portion 49. A second limiting annular groove 50 is formed between the third limiting portion 47 and the fourth limiting portion 49. The first rotation rod 30 and the second rotation rod 46 are disposed within the strip-shaped hole 10. The limiting rod 11 is inserted into the center of the retaining member 19. Second nuts 51 are then placed at both ends of the limiting rod 11 to constrain it within the strip-shaped hole 10 on the fixing member 9.

[0065] The retaining member 19 and the rotating member 13 are connected by an elastic member 52. The elastic member 52 allows the retaining member 19 to move with the rotating member 13, and at the same time allows the distance between the retaining member 19 and the rotating member 13 to change under the influence of the rotating block 27 and the limiting rod 11.

[0066] The elastic member 52 comprises a first arcuate segment 53, a second arcuate segment 54, and a third arcuate segment 55. The third arcuate segment 55 is connected to the first and second arcuate segments 53, 54 via an inclined segment 56. A first receiving hole 57 is formed in the center of the first arcuate segment 53, within which the first connecting portion 32 is located. A second receiving hole 58 is formed in the center of the second arcuate segment 54, within which the second connecting portion 48 is located. An elastic region 59 is formed between the first and second arcuate segments 53, 54. When the rotating block 27 rotates and the limiting rod 11 is within the first limiting opening 20 or the second limiting opening 21, the distance between the rotating member 13 and the retaining member 19 is H1. When the limiting rod 11 is released from the first limiting opening 20 or the second limiting opening 21 and reaches the outer wall of the rotating block 27, the distance between the rotating member 13 and the retaining member 19 is H2, where H1 < H2. That is, when the distance between the rotating member 13 and the retaining member 19 is H1, the elastic member 52 is in a natural state, and when the distance between the rotating member 13 and the retaining member 19 is H2, the elastic member 52 is in a tensile deformation state, and the distance between the first arc segment 53 and the second arc segment 54 increases.

[0067] When the carrier plate 8 is in a horizontal state and is not pushed by a worker, the tension spring 12 cannot pull the carrier plate 8 to rotate to an inclined state, that is, the tension of the tension spring 12 is smaller than the elastic force of the elastic member 52 .

[0068] A first extension portion 60 and a second extension portion 61 are provided on the fixing plate 41. A first fixing body 62 is provided at the lower end of the first extension portion 60, and a second fixing body 36 is provided at the lower end of the second extension portion 61. The first extension portion 60 is placed in the first mounting hole 37, the second extension portion 61 is placed in the second mounting hole 38, and the second fixing body 36 is placed in the third mounting hole 40.

[0069] During installation, first place the first fixing body 62 on the fixing member 9 in the first mounting hole 37, and the second extension portion 61 in the second mounting hole 38. At this time, the positioning rod 44 contacts the outer wall of the mounting plate 5, and then push the fixing member 9 so that the fixing member 9 squeezes the elastic arm 43 and keeps the elastic arm 43 deformed under force. Then push the fixing member 9 downward, driving the positioning rod 44 to enter the through hole 45 to limit the position, and the first fixing body 62 reaches the other side of the mounting plate 5 to limit the position, and the second fixing body 36 enters the third mounting hole 40 to limit the position of the fixing plate 41.

[0070] During disassembly, the unlocking rods are symmetrically inserted into the through holes 45 , the positioning rods 44 are pushed out of the through holes 45 , and then the fixing member 9 is pushed upwards.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A freeze-drying process for fruit slices based on water migration optimization, characterized in that: The following steps are involved: Step 1: Soaking: Rinse the fruit to be processed with clean water, then soak it in soaking water for 15-45 minutes. Ultrasonic equipment is used during soaking. The soaking water is a mixture of honey, rice water and clean water in a ratio of 0.3:0.5:0.

2. Step 2: Slice the fruit. Blow dry the surface moisture of the soaked fruit, then put it into the slicer for slicing. The drying temperature is 20°C and the time is 30 seconds. Step 3: Pre-treatment: Place the sliced ​​fruit slices in a refrigerator at 0-10°C for 1-8 hours and then take them out; Step 4: freeze-drying. Transfer the refrigerated fruit slices to a freeze-drying rack that matches the freeze-drying equipment, and then start freezing. First, cool the freezing equipment to -10-60°C and keep it for 2-8 hours. Then, evacuate it to a vacuum degree of 2-8 Pa, raise the temperature to 10-50°C, and keep it for 15-20 hours. Wherein, the freeze-drying rack includes: The frame is composed of symmetrically arranged mounting plates and guard plates arranged on both sides of the mounting plates, and the symmetrically arranged mounting plates are connected by reinforcement rods; Multiple bearing components are installed in conjunction with the frame, and the bearing components are evenly arranged on the mounting plate from top to bottom. The bearing components are provided with a bearing plate and fixing parts arranged on both sides of the bearing plate. The bearing plate is hinged to the fixing part through a rotating part. The bearing plate is pulled to keep the bearing plate rotating on the fixing part through the rotating part, and the tilted and retracted bearing plate is changed to a horizontal state.

2. The freeze-drying process for fruit slices based on moisture migration optimization according to claim 1, characterized in that: The mounting plate is provided with a first mounting hole and a second mounting hole, wherein the first mounting hole is a through hole, and a closing portion is further provided at the lower end of the second mounting hole, wherein a third mounting hole is formed inside the closing portion.

3. The freeze-drying process for fruit slices based on moisture migration optimization according to claim 2, characterized in that: The fixing member is composed of a fixing plate and a bearing rod. The fixing plate is installed in conjunction with the mounting plate. The bearing rod is used to support the bearing disc and limit the tilt angle of the bearing disc at the lower end to rotate upward.

4. The freeze-drying process for fruit slices based on moisture migration optimization according to claim 3, characterized in that: A strip hole is provided on the fixed plate, a retaining member is provided in the strip hole, the rotating member is arranged in the strip hole, the retaining members are connected to each other through a limiting rod, and the rotating member is connected to the carrying plate, and the carrying plate is kept rotating and moving in the strip hole through the rotating member.

5. The freeze-drying process for fruit slices based on moisture migration optimization according to claim 4, characterized in that: A bearing area is formed in the middle of the bearing plate, and the bearing area is open toward one side of the mounting plate. Symmetrically arranged bearing blocks are provided on both sides of the bearing plate, and the bearing blocks cooperate with the fixing parts to limit the position of the bearing plate. A first positioning pin is provided on the mounting plate, and a second positioning pin that cooperates with the first positioning pin is provided on the bearing plate. The first positioning pin and the second positioning pin are connected by a tension spring.

6. The freeze-drying process for fruit slices based on moisture migration optimization according to claim 5, characterized in that: The fixing plate is provided with symmetrically arranged elastic arms, the elastic arms are provided with positioning rods, and the mounting plate is provided with through holes that cooperate with the positioning rods.

7. The freeze-drying process for fruit slices based on moisture migration optimization according to claim 6, characterized in that: The carrying plate is provided with a symmetrically arranged rotating block, and the rotating block is provided with a hinge hole that cooperates with the rotating member. The rotating member is composed of a hinge rod, a first rotating rod, a first limiting part, a first connecting part and a second limiting part. The hinge rod is installed in cooperation with the hinge hole, and a first limiting ring groove is formed between the first limiting part and the second limiting part. The outer wall of the rotating block is provided with a first limiting opening and a second limiting opening that cooperate with the limiting rod.

8. The freeze-drying process for fruit slices based on moisture migration optimization according to claim 7, characterized in that: The retaining member is composed of a second rotating rod, a third limiting portion, a second connecting portion and a fourth limiting portion. A second limiting ring groove is formed between the third limiting portion and the fourth limiting portion. The first rotating rod and the second rotating rod are arranged in the strip hole.

9. The freeze-drying process for fruit slices based on moisture migration optimization according to claim 8, characterized in that: The retaining member and the rotating member are connected by an elastic member, and the elastic member consists of a first arc segment, a second arc segment and a third arc segment. The third arc segment is connected to the first arc segment and the second arc segment by an inclined segment. A first accommodating hole is formed in the middle of the first arc segment, and the first connecting portion is located in the first accommodating hole. A second accommodating hole is formed in the middle of the second arc segment, and the second connecting portion is located in the second accommodating hole. An elastic area is formed between the first arc segment and the second arc segment.

10. The freeze-drying process for fruit slices based on moisture migration optimization according to claim 9, characterized in that: The fixing plate is provided with a first extension portion and a second extension portion, the lower end of the first extension portion is provided with a first fixing body, the lower end of the second extension portion is provided with a second fixing body, the first extension portion is placed in the first mounting hole, the second extension portion is placed in the second mounting hole, and the second fixing body is placed in the third mounting hole.

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