Food freeze-drying device and method

Abstract

The present invention belongs to the technical field of food freeze-drying, and specifically relates to a food freeze-drying device and method, including a body, wherein a plurality of partitions are arranged vertically inside the body, and a tray is slidably connected to the partition; a lifting mechanism for separating the food from the bottom of the tray and turning the food; and an adjustment mechanism for adjusting the distance between adjacent partitions. The present invention can separate the bottom of the food from the bottom of the tray by the lifting plate and lifting column of the lifting mechanism, turn the food by pushing the assembly, and improve the freeze-drying efficiency. When taking out the food, the lifting plate and the lifting column can be relatively displaced to separate the food from the lifting plate, thereby reducing the situation where the bottom of the food after freeze-drying is easy to stick to the equipment, making it easy to take out the food, and the distance between two adjacent partitions can be adjusted by the adjustment mechanism, so as to adapt to foods of different sizes and improve applicability.

Description

Technical Field

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

[0002] Freeze-drying technology is an advanced food processing and preservation method that removes moisture and maintains the original structure, flavor and nutrients of food by directly converting the water in food from solid to gas at extremely low temperatures. The food is first frozen quickly so that the water is frozen into ice crystals, and then heat is provided in a high vacuum environment to sublimate the ice crystals directly into water vapor, ultimately achieving a drying effect. The food freeze-drying equipment is mainly composed of a machine body, partitions and trays. When in use, the food is placed in multiple trays, and the multiple trays are placed in multiple partitions located inside the machine body, so that the food is placed in the machine body, and the machine body freeze-dries the food after it is working.

[0003] When using existing food freeze-drying equipment, the food is usually placed directly on the bottom of the tray. Since the bottom of the food is in contact with the bottom of the tray, the sublimation path of the ice crystals at the bottom of the food is easily obstructed during freeze-drying, resulting in a slower or uneven sublimation rate, affecting the freeze-drying efficiency. After freeze-drying, the bottom of the food is easy to stick to the tray, which is inconvenient to take out the food. In addition, the distance between adjacent partitions is generally fixed and cannot be adjusted. When larger food is placed on the tray, it is easy to cause the overall height of the food and the tray to be greater than the distance between the adjacent partitions, making it difficult for the food and the tray to be placed in the machine body, resulting in insufficient applicability. Summary of the invention

[0004] The purpose of the present invention is to provide a food freeze-drying device and method, which can separate the bottom of the food from the bottom of the tray through the lifting plate and lifting column of the lifting mechanism, and drive the lifting column to move up and down to turn the food through the pushing component, thereby reducing the situation that the sublimation path of ice crystals at the bottom of the food is blocked during freeze-drying, resulting in a slow or uneven sublimation speed, thereby improving the freeze-drying efficiency, and can separate the food from the lifting plate by relative displacement between the lifting plate and the lifting column when taking out the food, thereby reducing the situation that the bottom of the food after freeze-drying is easy to stick to the equipment, making it easy to take out the food, and can adjust the distance between two adjacent partitions by cooperating with the limiting grooves at different height positions through the limit plate in the adjustment mechanism, thereby reducing the situation that a tray with larger food is difficult to put into the machine body, making it easy to adapt to foods of different sizes and improving applicability.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A food freeze-drying device, comprising:

[0007] A machine body, wherein a plurality of partitions are arranged in the vertical direction inside the machine body, a tray is slidably connected to the partitions, and a magnetic field freezing mechanism is installed inside the machine body;

[0008] The lifting mechanism is arranged in the tray and is used to separate the food from the bottom of the tray and turn the food over. The lifting mechanism comprises a lifting plate, a lifting column, a lifting assembly and a pushing assembly. The lifting plate is slidably connected in the tray. A plurality of lifting columns are arranged and are all slidably connected in the lifting plate in the vertical direction. The lifting assembly is arranged between the lifting plate and the partition and is used to drive the lifting plate to rise and fall. The pushing assembly is slidably installed on the inner side of the bottom of the tray and is used to push the lifting column to rise and fall. The lifting assembly comprises a top block arranged on the partition, and the lifting plate is slidably matched with the outer side of the top block. The pushing assembly comprises an electric slide rail fixedly connected in the tray, and the output end of the electric slide rail is fixedly connected with the bottom plate, and the bottom plate is provided with an inclined first push plate and a second push plate;

[0009] An adjustment mechanism, the adjustment mechanism is arranged between the partition and the inner wall of the body, and is used to adjust the distance between adjacent partitions. The adjustment mechanism includes a limit groove, a limit plate, a slide plate and a connecting rod. The limit grooves are provided in a plurality and are symmetrically distributed on the inner walls of both sides of the body. The limit plates are provided with two and are slidably installed on both sides of the partition, respectively. The limit plates are slidably matched with the limit grooves, and are used to limit the partition and the body. The slide plate is slidably connected to the partition, and a connecting rod is rotatably connected between the slide plate and the limit plate, and is used to drive the limit plate to slide along the partition;

[0010] Among them, after the lifting plate slides along the outer side of the top block, the lifting plate moves up and down relative to the tray, and the bottom plate drives the first push plate and the second push plate to move, and then drives the lifting column to move up and down along the lifting plate. After the slide plate moves, it drives the limit plate to insert into the limit groove or pull out from the limit groove.

[0011] As a preferred solution of the food freeze-drying equipment described in the present invention, the lifting assembly also includes two baffles arranged on the top of the partition, the baffles are slidably matched with the outer side of the tray, the top block is installed in the baffles, and slide grooves are provided on both sides of the tray. Slide blocks are fixedly connected on both sides of the lifting plate, the slide blocks are slidably matched with the slide grooves along the vertical direction, and the slide blocks are slidably matched with the outer side of the top block.

[0012] As a preferred solution of the food freeze-drying equipment described in the present invention, the top block is slidably connected to the baffle along an inclined direction, the internal thread of the top block is connected to a screw rod, the screw rod is inclined and the axis is parallel to the inclined sliding direction of the top block, and the lower end of the screw rod is rotatably connected to the partition.

[0013] As a preferred solution of the food freeze-drying equipment described in the present invention, the slider includes a lifting block and a rotating cylinder, the lifting block is fixedly connected to the outer side of the lifting plate, the rotating cylinder is rotatably connected to the outer side of the lifting block, and the rotating cylinder is rollingly matched with the outer side of the top block.

[0014] As a preferred solution of the food freeze-drying equipment described in the present invention, a slide cylinder is arranged on the outer side of the lifting column, the slide cylinder is fixedly connected to the bottom of the lifting plate, the inner side of the bottom of the slide cylinder slides with the lifting column in the vertical direction, a convex ring is fixedly connected to the lifting column, and the outer diameter of the convex ring is larger than the inner diameter of the bottom of the slide cylinder.

[0015] As a preferred solution of the food freeze-drying equipment described in the present invention, the pushing assembly also includes an electric telescopic rod fixedly connected to the bottom plate, the lower end of the first push plate is rotatably connected to the bottom plate, the upper end of the first push plate is rotatably connected to the upper end of the second push plate, and the lower end of the second push plate is rotatably connected to the output end of the electric telescopic rod.

[0016] As a preferred solution of the food freeze-drying equipment described in the present invention, the upper end and the lower end of the lifting column are both designed as arcs, and the lifting column is rotatably connected to the lifting plate.

[0017] As a preferred solution of the food freeze-drying equipment described in the present invention, the adjustment mechanism also includes a plurality of springs arranged between the slide plate and the partition plate, one end of the spring is fixedly connected to the slide plate, and the other end of the spring is fixedly connected to the partition plate.

[0018] As a preferred solution of the food freeze-drying equipment described in the present invention, a protrusion is fixedly connected to the slide plate, a stop column is provided on the side of the protrusion away from the spring, and the stop column is fixedly connected to the bottom of the partition.

[0019] The method of using the food freeze-drying equipment is applicable to the above-mentioned food freeze-drying equipment. The specific method of use is:

[0020] S1: Place the food in the tray and adjust the distance between the partitions through the adjustment mechanism to accommodate food of different sizes;

[0021] S2: Slide the tray onto the partition, and the lifting assembly drives the lifting plate to move up, so that the food is separated from the bottom of the tray. After the pushing assembly works, it drives several lifting columns to slide up and down along the lifting plate in turn to turn the food;

[0022] S3: After freeze-drying the food, slide along the partition to take out the tray, the lifting assembly drives the lifting plate to descend, and the lifting column moves upward relative to the lifting plate, so that the food is separated from the lifting plate, thereby taking out the freeze-dried food.

[0023] The technical effects achieved by the present invention are:

[0024] The present invention adopts the design of a lifting mechanism, which can separate the bottom of the food from the bottom of the tray through a lifting plate and a lifting column, and the tray with the food is slid into the partition, and the lifting plate slides along the top block and moves upward, so that the lifting plate drives the food to move up and separate it from the bottom of the tray, and after the pushing component works, it drives a plurality of lifting columns to move up and down along the lifting plate in turn, so that the lifting columns drive the food to turn over. Compared with the traditional method in which the food is directly placed on the bottom of the tray, the bottom of the food is separated from the bottom of the tray, and the food is turned over during freeze drying, so as to reduce the situation that the sublimation path of ice crystals at the bottom of the food is blocked during freeze drying, resulting in a slow or uneven sublimation speed, thereby improving the freeze drying efficiency;

[0025] The present invention adopts a lifting mechanism design, which can separate the food from the lifting plate when taking out the food. The tray with the food is slid outward along the partition, and the lifting plate slides along the top block and then moves downward, so that the lifting plate and the lifting column are relatively displaced, and the food placed on the lifting plate is blocked by the lifting column and separated from the lifting plate. Compared with the traditional method in which the food is directly placed on the bottom of the tray, the situation that the bottom of the freeze-dried food is easy to stick to the equipment is reduced, and the food is easy to take out;

[0026] The present invention adopts the design of an adjustment mechanism, which can adjust the distance between two adjacent partitions so that foods of different sizes can be placed on the partition together with the tray. The partition is moved up and down so that the limit plate is aligned with the limit groove at the appropriate height position. After the slide plate slides, the limit plate is driven by the connecting rod to slide and insert into the limit groove, so that the relative position between the partition and the body remains fixed, thereby adjusting the height position of the partition. The height positions of several partitions are adjusted to adjust the distance between two adjacent partitions. Compared with the traditional method in which the distance between adjacent partitions is fixed, the situation in which a tray with larger food is difficult to put into the body is reduced, which is convenient for adapting to foods of different sizes and improves applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is an exploded schematic diagram of the partition and the body of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the partition and the tray in the present invention;

[0030] Figure 4 The present invention Figure 3 The enlarged schematic diagram of point A in the middle;

[0031] Figure 5 is an exploded schematic diagram of the partition and the tray in the present invention;

[0032] Figure 6 is a cross-sectional schematic diagram of the lifting plate and the lifting column in the present invention;

[0033] Figure 7 It is a structural schematic diagram of the driving component in the present invention;

[0034] Figure 8 It is a schematic diagram of the structure of the partition plate and the lifting assembly in the present invention;

[0035] Fig. 9 It is a structural schematic diagram of the partition and the adjustment mechanism in the present invention;

[0036] Fig.10 It is a cross-sectional schematic diagram of the lifting assembly in the present invention.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] 10. Machine body; 11. Partition; 111. Stop column; 12. Tray; 121. Slide; 20. Lifting mechanism; 21. Lifting plate; 211. Sliding block; 212. Lifting block; 213. Rotating cylinder; 214. Sliding cylinder; 22. Lifting column; 221. Convex ring; 23. Lifting assembly; 231. Top block; 232. Stop bar; 233. Screw; 24. Pushing assembly; 241. Electric slide rail; 242. Bottom plate; 243. First push plate; 244. Second push plate; 245. Electric telescopic rod; 30. Adjusting mechanism; 31. Limiting groove; 32. Limiting plate; 33. Slide plate; 331. Protrusion; 34. Connecting rod; 35. Spring. DETAILED DESCRIPTION

[0039] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0040] Example 1

[0041] like Figures 1 to 9As shown, it is the first embodiment of the present invention, which provides a food freeze-drying device and method, including a body 10, a plurality of partitions 11 are arranged inside the body 10 along the vertical direction, a tray 12 is slidably connected to the partition 11, and a magnetic field freezing mechanism is installed inside the body 10; a lifting mechanism 20, the lifting mechanism 20 is arranged in the tray 12, and is used to separate the food from the bottom of the tray 12 and turn the food, the lifting mechanism 20 includes a lifting plate 21, a lifting column 22, a lifting assembly 23 and a pushing assembly 24, the lifting plate 21 is slidably connected to the tray 12, a plurality of lifting columns 22 are arranged and are all slidably connected to the lifting plate 21 along the vertical direction, the lifting assembly 23 is arranged between the lifting plate 21 and the partition 11, and is used to drive the lifting plate 21 to rise and fall, the pushing assembly 24 is slidably installed on the inner side of the bottom of the tray 12, and is used to push the lifting column 22 to rise and fall, the lifting assembly 23 includes a top block 231 arranged on the partition 11, and a lifting column 22 is provided. The plate 21 is slidably matched with the outer side of the top block 231, and the pushing assembly 24 includes an electric slide rail 241 fixedly connected to the tray 12, and the output end of the electric slide rail 241 is fixedly connected to the bottom plate 242, and the bottom plate 242 is provided with an inclined first push plate 243 and a second push plate 244; the adjustment mechanism 30 is arranged between the partition 11 and the inner wall of the body 10, and is used to adjust the distance between adjacent partitions 11, and the adjustment mechanism 30 includes a limit groove 31, a limit groove 32, and a limit groove 33. A positioning plate 32, a slide plate 33 and a connecting rod 34, a plurality of limiting grooves 31 are provided and symmetrically distributed on the inner walls on both sides of the body 10, two limiting plates 32 are provided and are slidably installed on both sides of the partition 11, the limiting plate 32 is slidably matched with the limiting grooves 31, and is used to limit the partition 11 and the body 10, the slide plate 33 is slidably connected to the partition 11, and a connecting rod 34 is rotatably connected between the slide plate 33 and the limiting plate 32, and is used to drive the limiting plate 32 to slide along the partition 11.

[0042] It should be noted that a door (not shown in the figure) is installed on the body 10, which is used to seal the food in the body 10. The door is a prior art and will not be described in detail here. The magnetic field freezing mechanism is a prior art and is used to control the growth rate of ice crystals and the post-crystal growth rate through the action of the magnetic field, thereby slowing down the growth of ice crystals in the food inside the body 10. The magnetic field affects the formation of hydrogen bonds between water molecules in the food, making the matrix more stable, which helps to control the degree of supercooling and the growth rate of crystals after nucleation. The magnetic field cooperates with the electric field generated by the high-voltage plate to further affect the movement and crystallization process of water molecules and slow down the growth of ice crystals. When in use, the installation position of the magnetic field freezing mechanism in the body 10 is adjusted according to actual needs, which will not be described in detail here.

[0043] When the present invention is in use, food is placed in the tray 12, and the tray 12 is slid onto the partition 11. The lifting plate 21 slides along the top block 231 and moves upward relative to the tray 12. The lifting plate 21 drives the food to move upward so that the bottom of the food is separated from the bottom of the tray 12. After the electric slide rail 241 works, the output end drives the bottom plate 242 to reciprocate along the bottom of the tray 12. When the bottom plate 242 moves toward the side close to the first push plate 243, the bottom of the lifting column 22 moves upward when sliding along the first push plate 243 and moves downward when sliding along the second push plate 244. When the bottom plate 24 2 moves toward the side close to the second push plate 244, the bottom of the lifting column 22 moves upward when sliding along the second push plate 244 and moves downward when sliding along the first push plate 243, so that the pushing assembly 24 drives the plurality of lifting columns 22 to move up and down along the lifting plate 21 in sequence, the lifting columns 22 move upward to lift the food and the lifting columns 22 move downward to make the food fall, and the lifting columns 22 at different positions drive different parts of the food to move up and down, thereby turning the food, compared with the traditional method of directly placing the food on the bottom of the tray 12, the ice crystals at the bottom of the food during freeze-drying are reduced. The sublimation path is blocked, resulting in a slow or uneven sublimation speed, so as to improve the freeze-drying efficiency. When the food needs to be taken out, the tray 12 with the food is slid outward along the partition 11, and the lifting plate 21 slides along the top block 231 and then moves downward, so that a relative displacement occurs between the lifting plate 21 and the lifting column 22. The food placed on the lifting plate 21 is blocked by the lifting column 22 and separated from the lifting plate 21, so as to reduce the situation that the bottom of the freeze-dried food is easy to stick to the equipment, and it is convenient to take out the food. When the distance between two adjacent partitions 11 needs to be adjusted, the partition 11 is moved up and down so that The limiting plate 32 is aligned with the limiting groove 31 at a suitable height position. After the slide plate 33 slides, the limiting plate 32 is driven by the connecting rod 34 to slide into the limiting groove 31, so as to limit the body 10 and the partition 11, thereby adjusting the height position of the partition 11. The height positions of several partitions 11 are adjusted to adjust the distance between two adjacent partitions 11. Compared with the traditional method in which the distance between adjacent partitions 11 is fixed, the situation in which the tray 12 with larger food is difficult to put into the body 10 is reduced, which is convenient for adapting to foods of different sizes and improves applicability.

[0044] It should also be noted that when the lifting column 22 moves up and down to turn the food, since different parts of the food are moved up and down by the lifting columns 22 at different positions, the different parts of the food rise and then fall, so that the turning of the food is a small shake rather than a rolling circle. During the turning of the food, the size of the space occupied by the food in the vertical direction does not change significantly, that is, there is no need to additionally adjust the distance between the partitions 11 according to the turning of the food, and since the turning of the food does not produce a large motion state, the behavior of turning the food does not have a significant impact on the difficulty of sealing the body 10.

[0045] Example 2

[0046] Reference Figures 1 to 10 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0047] like Figure 3 , Figure 4 , Figure 8 and Fig.10 As shown, the lifting assembly 23 also includes two baffles 232 arranged on the top of the partition 11, the baffles 232 slide together with the outer side of the tray 12, the top block 231 is installed in the baffles 232, and slide grooves 121 are provided on both sides of the tray 12. Slide blocks 211 are fixedly connected to both sides of the lifting plate 21, the slide blocks 211 slide together with the slide grooves 121 in the vertical direction, and the slide blocks 211 slide together with the outer side of the top block 231.

[0048] According to the above structure, the tray 12 with food is slid along the partition 11, and the tray 12 drives the slider 211 to slide along the outer side of the top block 231, so that the slider 211 drives the lifting plate 21 to move up and down along the slide groove 121, so that the lifting plate 21 drives the food to move up and down in the tray 12, so that the bottom of the food is separated from the bottom of the tray 12 after the food is placed in the body 10, and the lifting plate 21 and the lifting column 22 are relatively displaced when taking out the food, so that the food is separated from the lifting plate 21.

[0049] like Fig.10 As shown, the top block 231 is slidably connected to the baffle 232 along the inclined direction, and the internal thread of the top block 231 is connected to a screw rod 233, which is inclined and has an axis parallel to the inclined sliding direction of the top block 231, and the lower end of the screw rod 233 is rotatably connected to the partition 11.

[0050] It should be noted that the cross-sectional shape of the top block 231 is a parallelogram, and the axis of the screw rod 233 is parallel to the hypotenuse of the parallelogram.

[0051] According to the above structure, when it is necessary to adjust the height position of the lifting plate 21 in the tray 12 after it moves up along the tray 12, the screw 233 is rotated, and the screw 233 drives the top block 231 to slide up and down along the baffle 232, so that the distance between the top of the top block 231 and the partition 11 increases, so that when the lifting plate 21 slides along the top block 231 to the top of the top block 231, the distance between the lifting plate 21 and the partition 11 is also increased, so as to adjust the height position of the lifting plate 21 in the tray 12 after it moves up along the tray 12, so as to facilitate the adjustment of the separation distance after the lifting plate 21 separates the bottom of the food from the bottom of the tray 12, so as to adjust the size of the space around the ice crystals at the bottom of the food when they sublimate, so as to facilitate the sublimation of ice crystals at the bottom of the food.

[0052] like Figure 4 As shown, the slider 211 includes a lifting block 212 and a rotating cylinder 213. The lifting block 212 is fixedly connected to the outer side of the lifting plate 21, and the rotating cylinder 213 is rotatably connected to the outer side of the lifting block 212. The rotating cylinder 213 rolls with the outer side of the top block 231.

[0053] It should be noted that the cross-sectional shape of the lifting block 212 is rectangular, so as to reduce the rotation of the lifting block 212 when the lifting block 212 slides along the sliding groove 121 .

[0054] According to the above structure, when the slider 211 moves along the top block 231, the rotating cylinder 213 rolls along the top block 231, and at the same time, the rotating cylinder 213 also rotates on the lifting block 212. Compared with the fixed connection between the rotating cylinder 213 and the lifting block 212, the rolling cooperation between the rotating cylinder 213 and the top block 231 facilitates the movement of the slider 211 along the top block 231.

[0055] like Figure 6 As shown, a slide 214 is provided on the outer side of the lifting column 22, and the slide 214 is fixedly connected to the bottom of the lifting plate 21. The inner side of the bottom of the slide 214 slides with the lifting column 22 in the vertical direction. A convex ring 221 is fixedly connected to the lifting column 22, and the outer diameter of the convex ring 221 is larger than the inner diameter of the bottom of the slide 214.

[0056] It should be noted that the convex ring 221 is slidably matched with the inner wall of the slide cylinder 214 along the vertical direction, and the lifting column 22 is slidably matched with the bottom of the slide cylinder 214 along the vertical direction.

[0057] According to the above structure, when the lifting plate 21 moves upward relative to the tray 12, the lifting column 22 moves downward relative to the lifting plate 21, so that the convex ring 221 moves downward relative to the slide 214. Since the outer diameter of the convex ring 221 is larger than the inner diameter of the bottom of the slide 214, the bottom of the slide 214 hinders the convex ring 221 from continuing to move downward, thereby preventing the lifting column 22 from separating from the lifting plate 21 during the upward movement of the lifting plate 21.

[0058] like Figure 6 and Figure 7 As shown, the pushing assembly 24 also includes an electric telescopic rod 245 fixedly connected to the base plate 242, the lower end of the first push plate 243 is rotatably connected to the base plate 242, the upper end of the first push plate 243 is rotatably connected to the upper end of the second push plate 244, and the lower end of the second push plate 244 is rotatably connected to the output end of the electric telescopic rod 245.

[0059] It should be noted that inclined surfaces are provided on both sides of the bottom plate 242 , and the inclined surfaces facilitate the lower end of the lifting column 22 to slide from the bottom of the tray 12 to the bottom plate 242 .

[0060] According to the above structure, when it is necessary to adjust the height of the food lifted by the lifting column 22, the output end of the electric telescopic rod 245 drives the lower end of the second push plate 244 to move along the bottom plate 242 after operation, so that the second push plate 244 and the first push plate 243 rotate relative to each other, and the first push plate 243 and the bottom plate 242 rotate relative to each other, so that the distance between the upper ends of the first push plate 243 and the second push plate 244 and the bottom plate 242 increases or decreases, thereby adjusting the bottom of the lifting column 22 to slide along the first push plate 243 or the second push plate 244 to the highest height position, so as to adjust the height of the food lifted up by the lifting column 22, so as to facilitate turning over the food.

[0061] like Figure 6 As shown, the upper end and the lower end of the lifting column 22 are both arc-shaped, and the lifting column 22 is rotatably connected to the lifting plate 21 .

[0062] According to the above structure, when the pushing component 24 drives the lifting column 22 to move up and down through the first pushing plate 243 and the second pushing plate 244, the arc-shaped lower end of the lifting column 22 facilitates the lifting column 22 to slide along the first pushing plate 243 and the second pushing plate 244, and the arc-shaped upper end of the lifting column 22 facilitates the lifting column 22 to lift the food, thereby facilitating the turning of the food.

[0063] like Fig. 9 As shown, the adjustment mechanism 30 further includes a plurality of springs 35 disposed between the slide plate 33 and the partition plate 11 , one end of the spring 35 is fixedly connected to the slide plate 33 , and the other end of the spring 35 is fixedly connected to the partition plate 11 .

[0064] It should be noted that, in the initial state, the limiting plate 32 extends to the outside of the partition 11 .

[0065] According to the above structure, when it is necessary to release the limit between the partition 11 and the body 10, the slide plate 33 is slid toward the end close to the spring 35, so that the slide plate 33 drives the limit plate 32 to slide inward through the connecting rod 34, so that the limit plate 32 is pulled out from the inside of the limit groove 31 to release the limit between the partition 11 and the body 10. When it is necessary to reset the limit plate 32, the slide plate 33 is no longer slid. The spring 35 pushes the slide plate 33 to slide toward the end away from the spring 35 under the elastic action. The slide plate 33 drives the limit plate 32 to slide outward through the connecting rod 34, so that the limit plate 32 extends to the outside of the partition 11, thereby facilitating the resetting of the limit plate 32.

[0066] like Fig. 9 As shown, a protrusion 331 is fixedly connected to the slide plate 33 , and a stop column 111 is provided on the side of the protrusion 331 away from the spring 35 , and the stop column 111 is fixedly connected to the bottom of the partition 11 .

[0067] According to the above structure, during the resetting process of the limit plate 32, after the slide plate 33 slides to the end away from the spring 35, the slide plate 33 drives the protrusion 331 to contact the blocking column 111, and the blocking column 111 prevents the protrusion 331 and the slide plate 33 from continuing to slide, so that the limit plate 32 no longer continues to slide outward, thereby preventing the limit plate 32 from sliding outward all the time during the resetting process and separating from the partition 11.

[0068] In order to enable those skilled in the art to have a further understanding of the food freeze-drying device of the present invention, the present invention also provides a method for using the food freeze-drying device, which is applicable to the above-mentioned food freeze-drying device, and the specific method of use is:

[0069] S1: placing food in the tray 12, and adjusting the distance between the partitions 11 by the adjustment mechanism 30 to accommodate food of different sizes;

[0070] S2: The tray 12 is slidably placed on the partition 11, and the lifting assembly 23 drives the lifting plate 21 to move upward, so that the food is separated from the bottom of the tray 12. After the pushing assembly 24 works, it drives a plurality of lifting columns 22 to slide up and down along the lifting plate 21 in sequence to turn over the food;

[0071] S3: After freeze-dried food, slide the tray 12 along the partition 11 to take out, the lifting assembly 23 drives the lifting plate 21 to descend, and the lifting column 22 moves upward relative to the lifting plate 21, so that the food is separated from the lifting plate 21, thereby taking out the freeze-dried food.

[0072] The working principle of the present invention is as follows: when the tray 12 is slid onto the partition 11, the lifting plate 21 slides along the top block 231 and then moves upward, so that the lifting plate 21 drives the food to be separated from the bottom of the tray 12, and after the pushing assembly 24 works, it drives a plurality of lifting columns 22 to move up and down in sequence, so that the lifting columns 22 drive the food to flip, thereby reducing the situation that the sublimation path of ice crystals at the bottom of the food is blocked during freeze-drying, resulting in a slow or uneven sublimation speed, thereby improving the freeze-drying efficiency, and when taking out the food, the lifting plate 21 slides along the top block 231 and then moves downward, so that the lifting columns 22 move upward relative to the lifting plate 21 and lift the food, thereby separating the bottom of the food from the lifting plate 21, reducing the situation that the bottom of the food is easy to stick to the equipment after freeze-drying, and facilitating the removal of the food, and by inserting the limiting plate 32 into the limiting groove 31 at different height positions to adjust the height position between two adjacent partitions 11, reducing the situation that the tray 12 with larger food is difficult to put into the machine body 10, facilitating the adaptation of foods of different sizes, and improving the applicability.

[0073] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A food freeze-drying device, characterized in that: include: A machine body (10), wherein a plurality of partitions (11) are arranged in a vertical direction inside the machine body (10), a tray (12) is slidably connected to the partitions (11), and a magnetic field freezing mechanism is installed inside the machine body (10); A lifting mechanism (20), the lifting mechanism (20) being arranged in a tray (12) and being used to separate food from the bottom of the tray (12) and to flip the food, the lifting mechanism (20) comprising a lifting plate (21), a lifting column (22), a lifting assembly (23) and a pushing assembly (24), the lifting plate (21) being slidably connected in the tray (12), a plurality of lifting columns (22) being arranged and all being slidably connected in the lifting plate (21) in a vertical direction, the lifting assembly (23) being arranged between the lifting plate (21) and the partition plate (11) and being used to drive the lifting plate (21) to move upward and downward. ) is lifted and lowered, the pushing component (24) is slidably mounted on the inner side of the bottom of the tray (12) and is used to push the lifting column (22) to lift and lower, the lifting component (23) includes a top block (231) arranged on the partition (11), the lifting plate (21) is slidably matched with the outer side of the top block (231), the pushing component (24) includes an electric slide rail (241) fixedly connected to the tray (12), the output end of the electric slide rail (241) is fixedly connected to the bottom plate (242), and the bottom plate (242) is provided with an inclined first push plate (243) and a second push plate (244); an adjusting mechanism (30), the adjusting mechanism (30) being arranged between the partition (11) and the inner wall of the body (10) and being used for adjusting the distance between adjacent partitions (11); the adjusting mechanism (30) comprising a limiting groove (31), a limiting plate (32), a sliding plate (33) and a connecting rod (34); a plurality of limiting grooves (31) being arranged and symmetrically distributed on the inner walls of both sides of the body (10); two limiting plates (32) being arranged and slidably mounted on both sides of the partition (11); the limiting plates (32) being slidably matched with the limiting grooves (31) and being used for limiting the partition (11) and the body (10); the sliding plate (33) being slidably connected to the partition (11); a connecting rod (34) being rotatably connected between the sliding plate (33) and the limiting plate (32) and being used for driving the limiting plate (32) to slide along the partition (11); The lifting plate (21) slides along the outer side of the top block (231), so that the lifting plate (21) moves up and down relative to the tray (12); the bottom plate (242) drives the first push plate (243) and the second push plate (244) to move, and then drives the lifting column (22) to move up and down along the lifting plate (21); and the sliding plate (33) moves, and then drives the limiting plate (32) to be inserted into the limiting groove (31) or to be pulled out from the limiting groove (31).

2. The food freeze-drying equipment according to claim 1, characterized in that: The lifting assembly (23) further comprises two baffles (232) arranged on the top of the partition (11), the baffles (232) slidingly cooperate with the outer side of the tray (12), the top block (231) is installed in the baffles (232), both sides of the tray (12) are provided with slide grooves (121), both sides of the lifting plate (21) are fixedly connected with sliders (211), the sliders (211) slidingly cooperate with the slide grooves (121) in a vertical direction, and the sliders (211) slidingly cooperate with the outer side of the top block (231).

3. The food freeze-drying equipment according to claim 2, characterized in that: The top block (231) is slidably connected to the stop bar (232) along an inclined direction. The top block (231) is internally threadedly connected to a screw rod (233). The screw rod (233) is inclined and its axis is parallel to the inclined sliding direction of the top block (231). The lower end of the screw rod (233) is rotatably connected to the partition plate (11).

4. The food freeze-drying equipment according to claim 3, characterized in that: The slider (211) comprises a lifting block (212) and a rotating cylinder (213); the lifting block (212) is fixedly connected to the outside of the lifting plate (21); the rotating cylinder (213) is rotatably connected to the outside of the lifting block (212); and the rotating cylinder (213) is in rolling cooperation with the outside of the top block (231).

5. The food freeze-drying equipment according to claim 3, characterized in that: A slide cylinder (214) is arranged on the outside of the lifting column (22); the slide cylinder (214) is fixedly connected to the bottom of the lifting plate (21); the inner side of the bottom of the slide cylinder (214) is slidably matched with the lifting column (22) along the vertical direction; a convex ring (221) is fixedly connected to the lifting column (22); the outer diameter of the convex ring (221) is larger than the inner diameter of the bottom of the slide cylinder (214).

6. The food freeze-drying equipment according to claim 1, characterized in that: The pushing assembly (24) further comprises an electric telescopic rod (245) fixedly connected to the bottom plate (242); the lower end of the first push plate (243) is rotatably connected to the bottom plate (242); the upper end of the first push plate (243) is rotatably connected to the upper end of the second push plate (244); and the lower end of the second push plate (244) is rotatably connected to the output end of the electric telescopic rod (245).

7. The food freeze-drying equipment according to claim 1, characterized in that: The upper end and the lower end of the lifting column (22) are both designed as arcs, and the lifting column (22) is rotatably connected to the lifting plate (21).

8. The food freeze-drying equipment according to claim 1, characterized in that: The regulating mechanism (30) further comprises a plurality of springs (35) arranged between the slide plate (33) and the partition plate (11), one end of the spring (35) being fixedly connected to the slide plate (33), and the other end of the spring (35) being fixedly connected to the partition plate (11).

9. The food freeze-drying equipment according to claim 8, characterized in that: A protrusion (331) is fixedly connected to the slide plate (33), a stop column (111) is provided on a side of the protrusion (331) away from the spring (35), and the stop column (111) is fixedly connected to the bottom of the partition plate (11).

10. A method for using a food freeze-drying device, characterized in that: Using the food freeze-drying equipment according to any one of claims 1 to 9, the specific method of use is: S1: placing food in the tray (12), and adjusting the distance between the partitions (11) by means of the adjustment mechanism (30) to accommodate food of different sizes; S2: The tray (12) is slidably placed on the partition (11), and the lifting component (23) drives the lifting plate (21) to move upward, so that the food is separated from the bottom of the tray (12), and the pushing component (24) drives a plurality of lifting columns (22) to slide up and down along the lifting plate (21) in sequence to turn the food; S3: After the food is freeze-dried, the tray (12) is taken out by sliding along the partition (11), the lifting assembly (23) drives the lifting plate (21) to descend, and the lifting column (22) moves upward relative to the lifting plate (21), so that the food is separated from the lifting plate (21), thereby taking out the freeze-dried food.

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