Freeze drying device and method for fruits

Abstract

The invention relates to the technical field of fruit freeze-drying, and particularly discloses a freeze-drying device for fruits and a method thereof.The freeze-drying device comprises a drying machine body and further comprises a drying mechanism used for being placed in the drying machine body; the drying disc is arranged on the drying mechanism and is used for placing fruits to be processed; the conveying mechanism is arranged on one side of the drying mechanism and used for conveying the drying trays to the drying mechanism; the drying trays are firstly placed on the conveying belt, then the conveying belt is driven to move the drying trays to the lifting plate, the special-shaped base at the bottom of the lifting plate is driven by the connecting strip to move during conveying, the drying trays on the lifting plate are jacked to the connector above the special-shaped base to be placed in the moving process, and therefore the multiple sets of drying trays can be stacked on the drying frame; and through the arrangement of the lifting plate and the lifting base, the drying disc can be conveniently placed, the drying disc at the high position does not need to be manually placed, the working efficiency is improved, and the safety risk is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fruit freeze-drying, in particular to a fruit freeze-drying device and a method thereof. Background Art

[0002] With the development of the times, there are technical means for the continuous preservation of fruits, which meet the needs of long-term storage while preserving the nutrition of fruits. At present, freeze dryers are mainly used to achieve this technology. A dryer refers to a mechanical equipment that uses heat energy to reduce the moisture content of materials and is used for drying objects.

[0003] Patent number CN221881934U discloses a vacuum freeze-drying device, which relates to the technical field of vacuum freeze-drying machines. The device comprises a freeze-drying machine body, a drying chamber body within the freeze-drying machine body, a sealed door at the front end of the drying chamber body, and a tray mechanism within the drying chamber body. The tray mechanism comprises positioning legs, a lifting rod, a positioning block, a tray body, and a limiting slot. The positioning legs are fixedly mounted on the side walls of the drying chamber body, a lifting rod is movably mounted on the positioning legs, a positioning block is fixedly mounted on the lifting rod, a limiting slot is defined on the positioning block, and the tray body is mounted in the limiting slot. A driving mechanism is provided at the upper end of the drying chamber body. When the turntable rotates, the connecting rod pulls the I-shaped frame up and down. During this movement, the I-shaped frame drives the lifting rod up and down, which in turn drives the tray body up and down. This causes the material to sway up and down within the tray body during the freeze-drying process, preventing the material from adhering to the bottom of the tray body.

[0004] In the prior art, the pallet body is moved up and down by the up and down movement of the lifting rod, so that the material in the pallet is shaken to prevent the material from sticking to the bottom of the pallet. However, in freeze-drying work, the pallets need to be placed into the dryer in groups manually, and in large-scale operations, a large dryer may need to be used. When facing a large dryer, the pallet needs to be placed on the shelf first, and then the shelf is driven to the inside of the dryer for drying operations. At the same time, the large dryer is relatively high, and when it is placed manually, tools such as ladders are required, which increases the labor of the staff and increases the safety risks during the climbing process, while reducing the feeding efficiency in the drying operation. Summary of the Invention

[0005] The object of the present invention is to provide a fruit freeze-drying device and method thereof to solve the following technical problems:

[0006] (1) How to facilitate the placement of trays when facing a large dryer;

[0007] (2) How to improve work efficiency.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] A fruit freeze-drying device comprises a dryer body and further comprises:

[0010] A drying mechanism, configured to be placed inside the dryer body;

[0011] A drying tray, provided on the drying mechanism, for placing fruits to be processed;

[0012] A conveying mechanism, provided on one side of the drying mechanism, for conveying the drying plate to the drying mechanism;

[0013] The drying tray has a square structure; a top column is fixedly connected to the drying tray; four groups of top columns are provided, equidistantly arranged at the four corners of the drying tray; connecting compartments are fixedly connected to both sides of the drying tray; a connecting spring is fixedly connected inside the connecting compartment; a three-sided edge block is fixedly connected to the end of the connecting spring away from the connecting compartment.

[0014] Furthermore, the drying mechanism includes a drying rack; connecting bridges are fixedly connected on both sides of the drying rack; a connecting head is fixedly connected in the connecting bridge; the connecting heads are provided in multiple groups; the inner diameter of the connecting head is consistent with the size of the three-sided edge block; a sliding column is fixedly connected to the drying rack; the sliding column is provided in multiple groups; the end of the sliding column away from the drying rack is fixedly connected to the lifting plate; the middle of the drying rack is fixedly connected to the lifting base; a sliding warehouse is slidably connected in the lifting base; curved grooves are provided on both sides of the sliding warehouse; a special-shaped base is fixedly connected in the sliding warehouse; the bottom of the lifting plate is fixedly connected to a support cart; the bottom of the support cart is fixedly connected to the support frame; the side wall of the support frame is rotatably connected to an axle; the end of the axle away from the support frame is slidably set in the curved groove; a roller is sleeved on the axle; the roller abuts against the special-shaped base.

[0015] Furthermore, the conveying mechanism includes a conveying frame; the side wall of the conveying frame is rotatably connected to the conveying roller; the conveying roller is sleeved with a conveyor belt; the side wall of the conveying frame is rotatably connected to the driving gear; the input end of the driving gear is fixedly connected to the output end of the conveying roller; a moving warehouse is provided under the conveying frame; the moving warehouse is rotatably connected to a moving screw rod; the moving screw rod is threadedly connected to a connecting bar; the end of the connecting bar away from the moving warehouse is connected to the special-shaped base; the side wall of the conveying frame is rotatably connected to a transmission rod; the two sides of the transmission rod are fixedly connected to gear 1 and gear 2; a driving belt is sleeved on the driving gear; the end of the driving belt away from the driving gear is sleeved with a gear; the side wall of the mobile warehouse is rotatably connected to a connecting gear; the output end of the connecting gear is fixedly connected to the input end of the moving screw rod; the gear 2 is meshed with the connecting gear.

[0016] Furthermore, the side wall of the special-shaped base is fixedly connected to a fixed bin; the top of the fixed bin is fixedly connected to a snap-in box; a slide is slidably connected in the snap-in box; the side wall of the slide is fixedly connected to a telescopic spring; the end of the telescopic spring away from the slide is fixedly connected to a snap-in block; a snap-in groove is provided at the end of the connecting strip; the connecting strip is arranged in the fixed bin and snap-in via the snap-in block; the end of the slide away from the telescopic spring is fixedly connected to a pull rod.

[0017] Furthermore, the side wall of the conveying frame is fixedly connected with a guide plate; and the movable warehouse is fixedly connected below the guide plate.

[0018] Furthermore, the bottom of the drying rack is rotatably provided with universal wheels; the universal wheels are provided in multiple groups.

[0019] Furthermore, the fixed compartments are provided with two groups, corresponding to the connection strips.

[0020] A fruit freeze-drying method comprises the following steps:

[0021] S1, first, the staff will place the fruits to be freeze-dried on the drying tray, and then put the drying trays on the conveyor belt in sequence, and then move the drying rack to the conveyor rack and connect it to the lifting base using the connecting strip at the bottom of the conveyor rack;

[0022] S2, after the connection is completed, the conveyor belt is started to transport the drying plate to the lifting plate on the drying rack. While the conveyor belt rotates, the connecting bar is driven back and forth by the movable screw rod, and the lifting plate is driven up and down during the movement. The drying plates on the lifting plate are sequentially connected to the connecting bridge to realize the placement of the drying plates;

[0023] S3, after the drying rack is filled, the connection between the connecting strip and the drying rack is cancelled, and then the drying rack is pushed into the dryer body to perform drying operation.

[0024] Beneficial effects of the present invention:

[0025] (1) The present invention first places the drying plate on the conveyor belt, and then drives the conveyor belt to move the drying plate to the lifting plate. While conveying, the connecting strip is used to drive the special-shaped base at the bottom of the lifting plate to move. During the movement, the drying plate on the lifting plate is pushed to the upper connecting head for placement. In this way, multiple groups of drying plates can be stacked on the drying rack. The arrangement of the lifting plate and the lifting base can facilitate the placement of the drying plates, and the drying plates at high places do not need to be placed manually, thereby improving work efficiency and reducing safety risks.

[0026] (2) The present invention connects the connecting strip with the special-shaped base. After the connection is completed, the drying plate is placed on the conveyor belt, and then the conveyor roller is driven to rotate. During the rotation, the conveyor belt is used to transport the drying plate to the lifting plate. At the same time, when the conveyor roller rotates, the driving gear on the conveyor frame is driven to rotate, and the driving belt is used to drive the gear 1 on the transmission rod to rotate. When the gear 1 rotates, it drives the transmission rod and the gear 2 to rotate. When the gear 2 rotates, it drives the gear connected to the side wall of the movable bin to rotate, thereby driving the moving screw rod to rotate. When the moving screw rod rotates, it drives the connecting strip to move back and forth. When the connecting strip moves back and forth, it drives the special-shaped base to move back and forth on the lifting base, thereby causing the lifting plate to move up and down, thereby the drying plates can be stacked on the drying rack, which is convenient for the placement of the drying plates. Among them, the gear 2 and the connecting gear are bevel gear settings, which can better perform meshing connection.

[0027] (3) In the present invention, when the drying plate reaches the lifting plate on the drying rack, the drying plate will generate inertia when it reaches the lifting plate due to the transportation of the drying plate by the conveying mechanism. Under the inertia, the three-sided edges on both sides of the drying plate will contact with the connecting head in the connecting bridge, and under the action of inertia, the drying plate will continue to move forward while in contact. During the movement, the three-sided edges will be squeezed into the connecting bin by the connecting head. Then, when the connecting head and the connecting bin become parallel, the three-sided edges will lose the squeezing force, thereby releasing the connecting spring in the connecting bin and bouncing the three-sided edges into the connecting head, thereby achieving the fixation of the drying plate on the lifting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 It is a schematic diagram of the overall structure of the dryer body in the present invention;

[0030] Figure 2 It is a schematic diagram of the overall structure of the drying rack of the present invention;

[0031] Figure 3 It is a schematic diagram of the overall structure of the lifting base in the present invention;

[0032] Figure 4 This is a cross-sectional view of the overall structure of the lifting base in the present invention;

[0033] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0034] Figure 6 This is a cross-sectional view of the overall structure of the drying rack of the present invention;

[0035] Figure 7 yes Figure 6 Enlarged view of point B in the middle;

[0036] Figure 8 It is a schematic diagram of the overall structure of the conveyor frame in the present invention;

[0037] Figure 9 This is a cross-sectional view of the overall structure of the mobile warehouse in the present invention;

[0038] Figure 10 This is a cross-sectional view of the overall structure of the fixed bin in the present invention;

[0039] Figure 11 It is a schematic diagram of the overall structure of the three-sided edge block in the present invention;

[0040] Figure 12 It is a schematic diagram of the overall structure of the drying plate in the present invention.

[0041] Description of the drawings: 1. Dryer body; 2. Drying mechanism; 21. Drying rack; 211. Universal wheel; 22. Connecting bridge; 221. Connecting head; 23. Sliding column; 231. Lifting plate; 24. Lifting base; 241. Sliding bin; 242. Curved groove; 25. Special-shaped base; 26. Support vehicle; 261. Axle; 262. Support rack; 263. Roller; 27. Fixed bin; 271. Snap-on box; 272. Slide plate; 273. Telescopic spring; 274. Snap-on Block; 275, pull rod; 3, conveying mechanism; 31, conveying frame; 311, conveying roller; 312, guide plate; 313, driving gear; 314, driving belt; 32, conveyor belt; 33, movable bin; 34, movable screw rod; 35, connecting strip; 351, snap-fit groove; 36, connecting gear; 37, transmission rod; 371, gear 1; 372, gear 2; 4, drying plate; 41, top column; 42, connecting bin; 421, connecting spring; 422, three-sided edge block. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] See also Figures 1-12 As shown, the present application provides a fruit freeze-drying device, comprising a dryer body 1, and further comprising:

[0044] The drying mechanism 2 is configured to be placed inside the dryer body 1;

[0045] A drying tray 4 is provided on the drying mechanism 2 and is used to place the fruits to be processed;

[0046] The conveying mechanism 3 is provided on one side of the drying mechanism 2 and is used to convey the drying plate 4 to the drying mechanism 2;

[0047] The drying tray 4 is a square structure; a top post 41 is fixedly connected to the drying tray 4; four groups of top posts 41 are provided, equidistantly arranged at the four corners of the drying tray 4; connecting compartments 42 are fixedly connected to both sides of the drying tray 4; a connecting spring 421 is fixedly connected within the connecting compartment 42; a three-sided edge block 422 is fixedly connected to the end of the connecting spring 421 away from the connecting compartment 42;

[0048] During operation, in the prior art, the tray body is moved up and down by the up and down movement of the lifting rod, so that the material in the tray is shaken to prevent the material from sticking to the bottom of the tray. However, in freeze-drying work, the trays need to be placed into the dryer in groups manually, and in large-scale operations, a large dryer may be required. When facing a large dryer, the trays need to be placed on the shelves first, and then the shelves are driven to the inside of the dryer for drying. At the same time, the large dryer is relatively high, and when placed manually, tools such as ladders are required, which increases the labor of the staff and the climbing process is very difficult. The process also increases safety risks and reduces the feeding efficiency in the drying operation. In order to prevent such incidents from happening, first, the fruits to be freeze-dried are neatly placed on the drying tray 4, and then the conveying mechanism 3 is connected to the drying mechanism 2. After the connection, the drying tray 4 is placed on the conveying mechanism 3, and the drying tray 4 is transported to the drying mechanism 2 through the conveying mechanism 3. Finally, the drying mechanism 2 is pushed into the dryer body 1 to operate. Among them, the four corners of the drying tray 4 are provided with top columns 41, and the drying tray 4 is stacked on the drying mechanism 2. The top columns 41 are used to separate the drying trays 4 connected adjacently.

[0049] like Figure 2-Figure 7As shown, the drying mechanism 2 includes a drying rack 21; connecting bridges 22 are fixedly connected on both sides of the drying rack 21; a connector 221 is fixedly connected inside the connecting bridge 22; the connector 221 is provided in multiple groups; the inner diameter of the connector 221 is consistent with the size of the three-sided edge block 422; a sliding post 23 is fixedly connected to the drying rack 21; the sliding post 23 is provided in multiple groups; the end of the sliding post 23 away from the drying rack 21 is fixedly connected to a lifting plate 231; the middle of the drying rack 21 is fixedly connected to a lifting base 24; the lifting base 24 A sliding compartment 241 is slidably connected thereto; curved grooves 242 are formed on both sides of the sliding compartment 241; a special-shaped base 25 is fixedly connected thereto; a support vehicle 26 is fixedly connected to the bottom of the lifting plate 231; a support frame 262 is fixedly connected to the bottom of the support vehicle 26; an axle 261 is rotatably connected to the side wall of the support frame 262; the end of the axle 261 away from the support frame 262 is slidably disposed in the curved groove 242; a roller 263 is sleeved on the axle 261; the roller 263 abuts against the special-shaped base 25;

[0050] When the drying tray 4 is in operation, after it reaches the lifting plate 231 on the drying rack 21, the drying tray 4 will generate inertia when it reaches the lifting plate 231 due to the transportation of the drying tray 4 by the conveying mechanism 3. Under the action of inertia, the three-sided edges 422 on both sides of the drying tray 4 will contact the connecting head 221 in the connecting bridge 22, and the drying tray 4 will continue to move forward while in contact. During the movement, the three-sided edges 422 will be squeezed into the connecting chamber 42 by the connecting head 221. Then, when the connecting head 221 and the connecting chamber 42 become parallel, the three-sided edges 422 will lose the squeezing force, thereby releasing the connecting spring 421 in the connecting chamber 42, and the three-sided edges 422 will bounce into the connecting head 221, thereby achieving the fixing of the drying tray 4 on the lifting plate 231. After the first group of drying trays 4 reaches the lifting plate 231, it is necessary to continuously input the second group of drying trays 4. While transporting the second group of drying trays 4, the sliding chamber 241 under the lifting plate 231 and the special-shaped base are driven to move. The special shape of the special-shaped base 25 allows the support trolley 26 above to rise when the special-shaped base 25 moves. After the support trolley 26 is raised, it drives the lifting plate 231 and the drying tray 4 to rise, and the rising height is consistent with the gap in the connection of the connecting bridge 22. That is, when the lifting plate 231 is raised, the drying tray 4 can be lifted up and pushed onto the upper connecting head 221, so that the three-sided edge block 422 is disconnected from the current connecting head 221 and reconnected with the upper connecting head 221. The top and both sides of the three-sided edge block 422 are inclined, which facilitates the squeezing of the connecting head 221, while the bottom of the three-sided edge block 422 is flat. After being connected with the connecting head 221, the drying tray 4 will not fall due to the flat surface. Subsequent drying trays 4 are lifted up by the lifting plate 231 in turn until the drying rack 21 is filled. The arrangement of the lifting plate 231 and the lifting base 24 facilitates the placement of the drying tray 4, and the drying tray 4 at a high place does not need to be placed manually, thereby improving work efficiency and reducing safety risks.

[0051] like Figure 8 and Figure 9As shown, the conveying mechanism 3 includes a conveying frame 31; a conveying roller 311 is rotatably connected to the side wall of the conveying frame 31; a conveying belt 32 is sleeved on the conveying roller 311; a driving gear 313 is rotatably connected to the side wall of the conveying frame 31; the input end of the driving gear 313 is fixedly connected to the output end of the conveying roller 311; a mobile bin 33 is provided below the conveying frame 31; a moving screw rod 34 is rotatably connected in the mobile bin 33; a connecting bar 35 is threadedly connected to the moving screw rod 34; the connecting bar 35 is away from the mobile bin 33 One end is connected to the special-shaped base 25; the side wall of the conveyor frame 31 is rotatably connected to the transmission rod 37; the two sides of the transmission rod 37 are fixedly connected to the gear 1 371 and the gear 2 372; the driving gear 313 is sleeved with a driving belt 314; the end of the driving belt 314 away from the driving gear 313 is sleeved with the gear 1 371; the side wall of the mobile warehouse 33 is rotatably connected to the connecting gear 36; the output end of the connecting gear 36 is fixedly connected to the input end of the moving screw rod 34; the gear 2 372 is meshed with the connecting gear 36;

[0052] During operation, first, connect the connecting strip 35 with the special-shaped base 25. After the connection is completed, place the drying plate 4 on the conveyor belt 32, and then drive the conveyor roller 311 to rotate. When rotating, the conveyor belt 32 will be used to transport the drying plate 4 to the lifting plate 231. The conveyor belt 32 is higher than the lifting plate 231, so when the drying plate 4 reaches the lifting plate 231, inertia will be generated due to the falling reason. At the same time, when the conveyor roller 311 rotates, it will drive the driving gear 313 on the conveyor frame 31 to rotate, and use the driving belt 314 to drive the gear 1 371 on the transmission rod 37 to rotate. When the gear 1 371 rotates, it will drive the transmission rod 37 and the gear 2 372 to rotate. When the gear 2 372 rotates, it will drive the moving The gear 36 connecting the side wall of the bin 33 rotates, thereby driving the movable screw rod 34 to rotate. When the movable screw rod 34 rotates, it drives the connecting bar 35 to move back and forth. When the connecting bar 35 moves back and forth, it drives the special-shaped base 25 to move back and forth on the lifting base 24, so that the lifting plate 231 can move up and down. When the lifting plate 231 is at a low position, the drying tray 4 on the conveyor belt 32 will move to it, and then the lifting plate 231 is used to lift the drying tray 4. After lifting, when it is lowered again, the subsequent drying tray 4 reaches the lifting plate 231 again, thereby stacking the drying tray 4 on the drying rack 21, which is convenient for placing the drying tray 4. Among them, the gear 2 372 and the connecting gear 36 are bevel gear settings, which can better engage with each other.

[0053] like Figure 1As shown, the side wall of the special-shaped base 25 is fixedly connected to the fixed compartment 27; the top of the fixed compartment 27 is fixedly connected to the clamping box 271; the slide 272 is slidably connected to the clamping box 271; the side wall of the slide 272 is fixedly connected to the telescopic spring 273; the end of the telescopic spring 273 away from the slide 272 is fixedly connected to the clamping block 274; the end of the connecting bar 35 is provided with a clamping groove 351; the connecting bar 35 is set in the fixed compartment 27 and clamped by the clamping block 274; the end of the slide 272 away from the telescopic spring 273 is fixedly connected to the pull rod 275;

[0054] During operation, when the connecting strip 35 is connected to the special-shaped base 25, the conveying rack 31 is first moved close to the drying rack 21, and then the connecting strip 35 is inserted into the fixed compartment 27. During insertion, the clamping groove 351 on the connecting strip 35 will contact the clamping block 274, and the clamping block 274 will be used to clamp and fix it, thereby realizing the connection. When the connection needs to be released, it is necessary to pull the top pull rod 275 to pull the clamping block 274 out of the clamping groove 351.

[0055] like Figure 9 As shown, the side wall of the conveying frame 31 is fixedly connected to a guide plate 312; the movable bin 33 is fixedly connected below the guide plate 312;

[0056] During operation, during transportation, the drying plate 4 can be moved forward onto the lifting plate 231 under the guidance of the guide plate 312 , so as to facilitate the connection between the three-sided edge block 422 and the connector 221 .

[0057] like Figure 2 As shown, the bottom of the drying rack 21 is rotatably provided with universal wheels 211; the universal wheels 211 are provided in multiple groups;

[0058] During operation, the loaded drying rack 21 can be moved into the dryer body 1 via the universal wheels 211 .

[0059] like Figure 10 As shown, the fixed compartment 27 is provided with two groups, corresponding to the connection strips 35;

[0060] During operation, the two groups of fixing chambers 27 can be better connected with the connecting strip 35 .

[0061] See also Figures 1-12 As shown, the present application provides a method for freeze-drying fruits, comprising the following steps:

[0062] S1, first, the staff places the fruits to be freeze-dried on the drying tray 4, and then puts the drying tray 4 on the conveyor belt 32 in sequence, and then moves the drying rack 21 to the conveyor rack 31, and uses the connecting bar 35 at the bottom of the conveyor rack 31 to connect it to the lifting base 24;

[0063] S2: After the connection is completed, the conveyor belt 32 is started to transport the drying tray 4 to the lifting plate 231 on the drying rack 21. While the conveyor belt 32 rotates, the movable screw 34 drives the connecting bar 35 to move back and forth, and during the movement, the lifting plate 231 is moved up and down, and the drying tray 4 on the lifting plate 231 is sequentially connected to the connecting bridge 22, so that the drying tray 4 is placed.

[0064] S3, after the drying rack 21 is filled, the connection between the connecting strip 35 and the drying rack 21 is cancelled, and then the drying rack 21 is pushed into the dryer body 1 to perform the drying operation;

[0065] During operation, first, the staff will place the fruits to be freeze-dried on the drying tray 4, and then put the drying tray 4 on the conveyor belt 32 in turn, then move the drying rack 21 to the side of the conveyor rack 31, and use the connecting bar 35 at the bottom of the conveyor rack 31 to connect it with the lifting base 24. After the connection is completed, start the conveyor belt 32 to transport the drying tray 4 to the lifting plate 231 on the drying rack 21. While the conveyor belt 32 rotates, the connecting bar 35 is driven back and forth by the moving screw rod 34. During the movement, the lifting plate 231 is driven up and down, and the drying tray 4 on the lifting plate 231 is snapped onto the connecting bridge 22 in turn to realize the placement of the drying tray 4. After the drying rack 21 is filled, the connection between the connecting bar 35 and the drying rack 21 is cancelled, and then the drying rack 21 is pushed into the dryer body 1 for drying.

[0066] The working principle of the present invention is as follows: after the drying tray 4 reaches the lifting plate 231 on the drying rack 21, the drying tray 4 will generate inertia when it reaches the lifting plate 231 due to the transportation of the drying tray 4 by the conveying mechanism 3. Under the action of inertia, the three-sided edge blocks 422 on both sides of the drying tray 4 will contact the connecting head 221 in the connecting bridge 22, and the drying tray 4 will continue to move forward while in contact. During the movement, the three-sided edge blocks 422 will be squeezed into the connecting chamber 42 by the connecting head 221. Then, when the connecting head 221 and the connecting chamber 42 become parallel, the three-sided edge blocks 422 will lose the squeezing force, thereby releasing the connecting spring 421 in the connecting chamber 42, and the three-sided edge blocks 422 will bounce into the connecting head 221, thereby achieving the fixing of the drying tray 4 on the lifting plate 231. After the first group of drying trays 4 reaches the lifting plate 231, it is necessary to continuously input the second group of drying trays 4. While the second group of drying trays 4 is being transported, the sliding chamber 241 under the lifting plate 231 and the special-shaped base are driven to move. The lifting platform 231 and the lifting base 24 are arranged so that the drying tray 4 can be lifted and pushed against the upper connecting head 221, so that the three-sided edge block 422 is disconnected from the current connecting head 221 and reconnected with the upper connecting head 221. The upper and both sides of the three-sided edge block 422 are inclined, which is convenient for squeezing the connecting head 221. The bottom of the three-sided edge block 422 is flat. After being connected with the connecting head 221, the drying tray 4 will not fall due to the flat surface. The subsequent drying trays 4 are lifted up by the lifting platform 231 in turn until the drying rack 21 is filled. The arrangement of the lifting platform 231 and the lifting base 24 facilitates the placement of the drying tray 4, and the drying tray 4 at a high position does not need to be placed manually, thereby improving work efficiency and reducing safety risks.

[0067] Among them, the connecting strip 35 is connected to the special-shaped base 25. After the connection is completed, the drying plate 4 is placed on the conveyor belt 32, and then the conveyor roller 311 is driven to rotate. When rotating, the conveyor belt 32 is used to transport the drying plate 4 to the lifting plate 231. The conveyor belt 32 is higher than the lifting plate 231, so when the drying plate 4 reaches the lifting plate 231, inertia is generated due to the falling reason. At the same time, when the conveyor roller 311 rotates, it drives the driving gear 313 on the conveyor frame 31 to rotate, and uses the driving belt 314 to drive the gear 1 371 on the transmission rod 37 to rotate. When the gear 1 371 rotates, it drives the transmission rod 37 and the gear 2 372 to rotate. When the gear 2 372 rotates, it drives the mobile bin 3 The side wall connecting gear 36 rotates, thereby driving the movable screw rod 34 to rotate. When the movable screw rod 34 rotates, it drives the connecting bar 35 to move back and forth. When the connecting bar 35 moves back and forth, it drives the special-shaped base 25 to move back and forth on the lifting base 24, thereby causing the lifting plate 231 to move up and down. When the lifting plate 231 is at a low position, the drying tray 4 on the conveyor belt 32 will move to it, and then the lifting plate 231 will be used to lift the drying tray 4. After lifting, when it is lowered again, the subsequent drying tray 4 will reach the lifting plate 231 again, thereby stacking the drying tray 4 on the drying rack 21, which is convenient for placing the drying tray 4. Among them, the gear 2 372 and the connecting gear 36 are configured as bevel gears, which can better mesh with each other.

[0068] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A freeze-drying device for fruits, comprising a dryer body (1), characterized in that: Also includes: A drying mechanism (2) is arranged inside the dryer body (1); A drying tray (4), arranged on the drying mechanism (2), for placing fruits to be processed; A conveying mechanism (3) is provided on one side of the drying mechanism (2) and is used to convey the drying plate (4) to the drying mechanism (2); The drying plate (4) has a square structure; a top column (41) is fixedly connected to the drying plate (4); four groups of the top columns (41) are provided and are equidistantly arranged at the four corners of the drying plate (4); connecting chambers (42) are fixedly connected to both sides of the drying plate (4); a connecting spring (421) is fixedly connected inside the connecting chamber (42); and a three-sided edge block (422) is fixedly connected to one end of the connecting spring (421) away from the connecting chamber (42).

2. A fruit freeze-drying device according to claim 1, characterized in that: The drying mechanism (2) comprises a drying rack (21); connecting bridges (22) are fixedly connected to both sides of the drying rack (21); a connecting head (221) is fixedly connected inside the connecting bridge (22); a plurality of connecting heads (221) are provided; the inner diameter of the connecting head (221) is consistent with the size of the three-sided prism (422); a sliding column (23) is fixedly connected to the drying rack (21); a plurality of sliding columns (23) are provided; a lifting plate (231) is fixedly connected to one end of the sliding column (23) away from the drying rack (21); a lifting base (24) is fixedly connected to the middle of the drying rack (21); a lifting base (24) is provided inside the lifting base (24). A sliding bin (241) is slidably connected; curved grooves (242) are provided on both sides of the sliding bin (241); a special-shaped base (25) is fixedly connected inside the sliding bin (241); a support vehicle (26) is fixedly connected to the bottom of the lifting plate (231); a support frame (262) is fixedly connected to the bottom of the support vehicle (26); an axle (261) is rotatably connected to the side wall of the support frame (262); an end of the axle (261) away from the support frame (262) is slidably arranged in the curved groove (242); a roller (263) is sleeved on the axle (261); and the roller (263) abuts against the special-shaped base (25).

3. A fruit freeze-drying device according to claim 2, characterized in that: The conveying mechanism (3) comprises a conveying frame (31); a conveying roller (311) is rotatably connected to the side wall of the conveying frame (31); a conveying belt (32) is sleeved on the conveying roller (311); a driving gear (313) is rotatably connected to the side wall of the conveying frame (31); an input end of the driving gear (313) is fixedly connected to an output end of the conveying roller (311); a moving bin (33) is provided below the conveying frame (31); a moving screw rod (34) is rotatably connected in the moving bin (33); a connecting bar (35) is threadedly connected to the moving screw rod (34); the connecting bar (35) is away from the moving bin (33) One end is connected to the special-shaped base (25); the side wall of the conveying frame (31) is rotatably connected to a transmission rod (37); the two sides of the transmission rod (37) are fixedly connected to gear 1 (371) and gear 2 (372); a driving belt (314) is sleeved on the driving gear (313); the end of the driving belt (314) away from the driving gear (313) is sleeved on gear 1 (371); the side wall of the mobile warehouse (33) is rotatably connected to a connecting gear (36); the output end of the connecting gear (36) is fixedly connected to the input end of the moving screw rod (34); the gear 2 (372) is meshed and connected with the connecting gear (36).

4. A fruit freeze-drying device according to claim 3, characterized in that: The side wall of the special-shaped base (25) is fixedly connected to a fixed bin (27); the top of the fixed bin (27) is fixedly connected to a clamping box (271); a slide plate (272) is slidably connected in the clamping box (271); the side wall of the slide plate (272) is fixedly connected to a telescopic spring (273); the end of the telescopic spring (273) away from the slide plate (272) is fixedly connected to a clamping block (274); a clamping groove (351) is provided at the end of the connecting strip (35); the connecting strip (35) is arranged in the fixed bin (27) and clamped by the clamping block (274); the end of the slide plate (272) away from the telescopic spring (273) is fixedly connected to a pull rod (275).

5. A fruit freeze-drying device according to claim 4, characterized in that: The side wall of the conveying frame (31) is fixedly connected with a guide plate (312); and the movable bin (33) is fixedly connected below the guide plate (312).

6. The fruit freeze-drying device according to claim 5, characterized in that: The bottom of the drying rack (21) is rotatably provided with universal wheels (211); the universal wheels (211) are provided in multiple groups.

7. A fruit freeze-drying device according to claim 6, characterized in that: The fixed bins (27) are provided with two groups, corresponding to the connection bars (35).

8. A method for freeze-drying fruits, characterized in that: The following steps are involved: S1, first, the staff puts the fruits to be freeze-dried on the drying plate (4), and then puts the drying plate (4) on the conveyor belt (32) in sequence, and then moves the drying rack (21) to the side of the conveyor rack (31), and connects the connecting strip (35) at the bottom of the conveyor rack (31) to the lifting base (24); S2, after the connection is completed, the conveyor belt (32) is started to transport the drying plate (4) to the lifting plate (231) on the drying rack (21), and the connecting bar (35) is driven to move back and forth by the movable screw rod (34) while the conveyor belt (32) rotates, and the lifting plate (231) is driven to move up and down during the movement, and the drying plate (4) on the lifting plate (231) is sequentially connected to the connecting bridge (22), so that the drying plate (4) is placed; S3, after the drying rack (21) is filled, the connection between the connecting strip (35) and the drying rack (21) is cancelled, and then the drying rack (21) is pushed into the dryer body (1) to perform drying operation.

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