Freeze-drying material forming device and fermented cordyceps sinensis mycelium freeze-drying method
By using interlaced separation components in the freeze-drying material forming device to form material blocks and gaps, the problem of slower sublimation rate of material in the center of the freeze-drying disk is solved, and the quality of freeze-drying products is improved.
Patent Information
- Application Number
- CN202510383521.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2025-06-06
AI Technical Summary
The design of existing freeze-dried trays leads to a slower sublimation rate of material in the center of the freeze-dried tray, resulting in a decrease in the quality of freeze-dried products.
The material forming device for freeze-drying including a pallet assembly and a partition assembly is adopted. The partition assembly forms a meshly arranged material grid through interlaced partition plates. After separation, the material is formed into several material blocks and gaps, thereby increasing the contact area between the material and the outside air flow.
The moisture sublimation rate of materials in the center of the freeze-dried dish is improved, the residual moisture difference between materials in the center of the freeze-dried dish and the edge area is reduced, and the quality of the freeze-dried product is improved.
Smart Images
Figure CN120101459A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of freeze-drying equipment, and in particular to a freeze-drying material forming device and a freeze-drying method for fermented cordyceps mycelium. Background Art
[0002] Freeze drying (lyophilization) technology is a process that removes moisture from materials through the principle of sublimation while retaining the activity of heat-sensitive components in the materials and extending the shelf life of the materials. This process is widely used in the fields of pharmaceuticals, food (cordyceps freeze-dried powder) and biological products. The key to this process is to control the temperature, pressure and moisture migration path of the material to ensure the efficiency and uniformity of moisture sublimation in the material during the ice crystal sublimation stage and the analytical drying stage. Among them, the design of the freeze drying tray and the material loading method have a significant impact on the final drying effect.
[0003] Existing freeze-drying trays usually adopt a flat tray structure, and the materials are spread flat in the tray. This tray structure has obvious defects: when the materials are piled in the freeze-drying tray, the adjacent materials are in close contact with each other, which makes the water sublimation rate between local areas significantly different. Specifically, the materials located in the edge area of the freeze-drying tray have a larger surface area and a faster heat exchange rate because their outer sides are not in contact with other materials. At the same time, the water in this area can escape from the top and sides of the materials, making the water escape path in this area shorter. Therefore, the water sublimation rate of the materials located in the edge area of the freeze-drying tray is relatively low. Fast; while the material located in the center area of the freeze-drying tray is surrounded by other materials on all sides, forming a relatively closed environment, which makes the heat exchange rate in this area slower. At the same time, when the water vapor in this area escapes to the outside, it needs to pass through other materials, making the water escape path in this area longer. Therefore, the water sublimation rate of the material in the center area of the freeze-drying tray is slower; the difference in water sublimation rate in different areas of the freeze-drying tray will affect the residual water content of materials in different areas of the same freeze-drying tray, causing the material at the edge of the freeze-drying tray to be over-dried, while the residual water content of the material in the center of the freeze-drying tray exceeds the standard, thereby causing the quality of the freeze-dried product to decline. Summary of the invention
[0004] In view of this, it is necessary to provide a freeze-drying material forming device and a freeze-drying method for fermented Cordyceps sinensis mycelium, which can increase the water sublimation rate of the material in the central area of the freeze-drying tray, reduce the difference in residual water between the material in the central area of the freeze-drying tray and the material in the edge area of the freeze-drying tray, thereby improving the quality of the freeze-dried product.
[0005] In the first aspect, the present invention provides a freeze-drying material forming device, comprising a tray assembly and a partition assembly, wherein the tray assembly is used to place materials to be processed, and the partition assembly is detachably installed in the tray assembly, and the partition assembly comprises at least two first partition plates with the same structure and at least two second partition plates with the same structure, and each first partition plate and each second partition plate are staggered with each other to form a plurality of material grids arranged in a mesh shape, which are used to form a plurality of material blocks in the material of the tray assembly after the partition assembly is separated from the tray assembly, and gaps are formed between each material block, so as to increase the contact area between the material and the external airflow and improve the water sublimation rate of the material in the central area of the tray assembly.
[0006] Preferably, the sizes of each material grid are different to form material blocks of different sizes in different areas of the tray assembly, so that the moisture sublimation rates of the material blocks in different areas of the tray assembly are similar; each first partition plate and each second partition plate are wavy to increase the contact area between each material block and the external airflow, thereby improving the moisture sublimation rate of the material.
[0007] Preferably, at least one connecting rod is provided on the top of each material grid, and at least one breathable column is installed on the connecting rod to form breathable holes on each material block to increase the water sublimation rate of each material block; pull rods are installed on the top surface of both ends of each first partition plate to facilitate lifting the partition assembly.
[0008] Preferably, the tray assembly includes a freeze-drying tray body and two locking groups, and at least one card groove is evenly opened on both sides of the freeze-drying tray body for clamping with the two ends of each first partition plate; the two locking groups are respectively arranged on both sides of the freeze-drying tray body for fixing the two ends of each first partition plate.
[0009] Preferably, locking blocks are provided at both ends of each first partition plate, and locking holes are opened on the locking blocks; each locking group includes a fixing part, a sliding rod and at least one "L"-shaped locking rod, the fixing part is fixedly connected to the freeze-drying disk body, and the sliding rod is slidably installed on the fixing part, the long rod end of each locking rod is fixedly connected to the sliding rod, and the short rod end is used to engage with each locking hole so as to extend into or out of the locking hole as the sliding rod slides.
[0010] Preferably, each locking group also includes a return spring, which is mounted on the sliding rod, one end of which is fixedly connected to the fixing member, and the other end of which is fixedly connected to any locking rod, and satisfies the following conditions: when the locking rod extends from the locking hole, the locking rod compresses the return spring to reset the locking rod through the return spring.
[0011] Preferably, the freeze-drying material forming device also includes a scraper assembly, which includes two scraper rails and a scraper plate with the same structure, the two scraper rails are respectively installed on the top surfaces at both ends of each first partition plate, the two ends of the scraper plate are respectively slidably installed on the two scraper rails, and the bottom surface of the scraper plate is flush with the top surface of the freeze-drying tray body, so that it can reciprocate along the two scraper rails to scrape the material in the freeze-drying tray body flat and remove the material exceeding the top surface of the freeze-drying tray body.
[0012] Preferably, the freeze-dried material forming device also includes a vibration component, which includes a vibration frame, two vibration brackets and a vibration motor, the two vibration brackets are symmetrically installed on both sides of the bottom surface of the vibration frame, the vibration frame is used to place the bottom end of the freeze-drying tray body, and the vibration motor is installed on the vibration frame to drive the vibration frame to vibrate so as to vibrate the material in the freeze-drying tray body evenly.
[0013] Preferably, the vibration assembly also includes at least four vibration connecting parts, and at least four connecting grooves are symmetrically opened on both sides of the top surface of the vibration frame. The bottom end of each vibration connecting part is fixedly connected to the two vibration brackets respectively, and the top end extends into the connecting groove. Two vibration springs are also provided in each connecting groove, and one end of each vibration spring is fixedly connected to the connecting groove, and the other end is fixedly connected to each vibration connecting part to enhance the vibration effect of the vibration frame.
[0014] In a second aspect, the present invention provides a freeze-drying method for fermented Cordyceps sinensis mycelium, comprising the following steps: S1, performing solid-liquid separation on the fermented Cordyceps sinensis mycelium and the fermentation liquid after fermentation culture at a temperature below a first predetermined temperature; S2, spreading the separated viscous fermented Cordyceps sinensis mycelium on the tray assembly of the freeze-drying material forming device; S3, placing the freeze-drying plate body on a vibration frame, and starting the vibration motor to vibrate the fermented Cordyceps sinensis mycelium uniformly; S4, removing the freeze-drying tray body from the vibration frame, pulling the scraper plate to scrape off the fermented Cordyceps sinensis mycelium that exceeds the top surface of the freeze-drying tray body; S5, removing the partition assembly from the tray assembly, so that the fermented Cordyceps sinensis mycelium in the tray assembly forms a plurality of Cordyceps sinensis mycelium blocks, and gaps are formed between the Cordyceps sinensis mycelium blocks, so as to increase the contact area between the Cordyceps sinensis mycelium blocks and the external airflow and improve the water sublimation rate of the Cordyceps sinensis mycelium blocks in the central area of the tray assembly; S6, placing the freeze-drying tray body into a freezing device, and maintaining the freeze-drying tray body at a second predetermined temperature for a first predetermined time to completely freeze the Cordyceps sinensis mycelium block; S7, taking the freeze-drying tray body out of the freezing device, sending it into a vacuum drying device, first evacuating to a predetermined pressure, then heating it to a third predetermined temperature, and maintaining it for a second predetermined time, so as to remove most of the moisture in the Cordyceps sinensis mycelium block; S8, raising the temperature to a fourth predetermined temperature in the vacuum drying device and maintaining the temperature for a third predetermined time to further reduce the moisture content of the Cordyceps sinensis mycelium block; S9, taking out the freeze-drying tray body from the vacuum drying device, and taking out the freeze-dried Cordyceps sinensis mycelium blocks from the freeze-drying tray body; S10, processing the freeze-dried Cordyceps sinensis mycelium blocks into freeze-dried Cordyceps powder through a crushing device.
[0015] The freeze-dried material forming device is provided with a tray assembly and a partition assembly. Before the material to be processed is placed on the tray assembly, the partition assembly is located on the tray assembly; after the material to be processed is placed on the tray assembly, the partition assembly is removed from the tray assembly. The partition assembly includes at least two first partition plates with the same structure and at least two second partition plates with the same structure. Each first partition plate and each second partition plate are interlaced with each other to form a plurality of material grids arranged in a mesh shape, so that after the tray assembly is removed from the partition assembly, the material on the tray assembly is formed into a plurality of material blocks, and gaps are formed between the material blocks, so that The material blocks located in the central area of the tray assembly are separated from other material blocks on all sides, so that the contact area between the material blocks in the central area of the tray assembly and the external airflow is increased, thereby increasing the heat exchange rate of the material blocks in the central area of the tray assembly; at the same time, the water vapor generated by the sublimation of the material blocks located in the central area of the tray assembly can escape from the gaps between the material blocks, shortening the moisture escape path of the material blocks in the central area of the tray assembly, thereby increasing the moisture sublimation rate of the material blocks in the central area of the tray assembly, reducing the difference in residual moisture between the material blocks in the central area of the tray assembly and the material blocks in the edge areas of the tray assembly, thereby improving the quality of the freeze-dried products. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is an oblique bird's-eye view of the freeze-drying material forming device of the present application.
[0017] Figure 2 It is an oblique top view of the partition assembly of the present application.
[0018] Figure 3 This application Figure 2 A partial enlarged view of area A.
[0019] Figure 4 It is an oblique top view of the tray assembly of the present application.
[0020] Figure 5 This application Figure 4 A partial enlarged view of area B in the middle.
[0021] Figure 6 It is an oblique top view of the scraper assembly of the present application.
[0022] Figure 7 It is an oblique top-down view of the vibration component of the present application.
[0023] Figure 8 This application Figure 7 A partial enlarged view of the middle C area.
[0024] In the figure: a freeze-dried material forming device 10, a tray assembly 20, a freeze-drying tray body 21, a slot 211, a locking group 22, a fixing piece 221, a sliding rod 222, a locking rod 223, a return spring 224, a partition assembly 30, a first partition plate 31, a locking block 311, a locking hole 312, a second partition plate 32, a connecting rod 33, a breathable column 34, a pulling rod 35, a scraper assembly 40, a scraper track 41, a scraper plate 42, a vibration assembly 50, a vibration frame 51, a vibration bracket 52, a vibration motor 53, a vibration connecting piece 54, a connecting slot 55, and a vibration spring 56. DETAILED DESCRIPTION
[0025] The technical solutions and technical effects of the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings of the present invention.
[0026] Please refer to Figure 1 In a first aspect, the present invention provides a freeze-drying material forming device 10, comprising a tray assembly 20 and a partition assembly 30, wherein the tray assembly 20 is used to place materials to be processed, and the partition assembly 30 is detachably installed in the tray assembly 20, wherein the partition assembly 30 comprises at least two first partition plates 31 having the same structure and at least two second partition plates 32 having the same structure, wherein each first partition plate 31 and each second partition plate 32 are interlaced with each other to form a plurality of material grids arranged in a mesh shape, and wherein after the partition assembly 30 is separated from the tray assembly 20, the materials in the tray assembly are formed into a plurality of material blocks, and gaps are formed between the material blocks, so as to increase the contact area between the materials and the external airflow and to enhance the tray assembly 20. The moisture sublimation rate of the material in the central area; in this way, the material blocks located in the central area of the tray assembly 20 are separated from other material blocks on all sides, so that the contact area between the material blocks in the central area of the tray assembly 20 and the external airflow is increased to increase the heat exchange rate of the material blocks in the central area of the tray assembly 20; at the same time, the water vapor generated by the sublimation of the material blocks located in the central area of the tray assembly 20 can escape from the gaps between the material blocks, shortening the moisture escape path of the material blocks in the central area of the tray assembly 20, thereby increasing the moisture sublimation rate of the material blocks in the central area of the tray assembly 20, reducing the difference in residual moisture between the material in the central area of the tray assembly 20 and the material in the edge area of the tray assembly 20, thereby improving the quality of the freeze-dried product.
[0027] Furthermore, the sizes of the material grids are different, so as to form material blocks of different sizes in different areas of the tray assembly 20, so that the water sublimation rates of the material blocks in different areas of the tray assembly 20 are similar; specifically, after the material spread in the tray assembly 20 is divided into a plurality of material blocks by the partition assembly 30, the material blocks located in the central area of the tray assembly 20 are not in contact with other materials and the outer edge of the tray assembly 20 on all sides, while the material blocks located in the edge area of the tray assembly 20 have at least one side in contact with the outer edge of the tray assembly 20. Since the heat exchange efficiency and water escape rate of the part of the material block in contact with the tray assembly 20 are lower than those of the part of the material block directly exposed to the outside, the material blocks located in the central area of the tray assembly 20 have a faster water sublimation rate than the material blocks located in the edge area of the tray assembly. In order to ensure that the water sublimation rates of the freeze-dried blocks in different areas of the tray assembly 20 are similar, it is necessary to divide the materials into material blocks of different sizes according to different areas. For example, the size of the material blocks in the central area of the tray assembly 20 is larger than the size of the material blocks in the edge area, and the size of the material blocks in contact with the tray assembly 20 on one side is larger than the size of the material blocks in contact with the tray assembly 20 on both sides.
[0028] Please refer to Figure 2 Furthermore, each first partition plate 31 and each second partition plate 32 are wavy in shape to increase the contact area between each material block and the external airflow and improve the moisture sublimation rate of the material; at least one connecting rod 33 is provided on the top of each material grid, and at least one breathable column 34 is installed on the connecting rod 33, so that after the partition assembly 30 and the tray assembly 20 are separated, air holes are formed at the positions where each material block contacts the breathable column 34, further increasing the contact area between each material block and the air and improving the moisture sublimation rate of each material block.
[0029] Please refer to Figure 2 Furthermore, pull rods 35 are installed on the top surfaces of both ends of each first partition plate 31 to facilitate lifting the partition assembly 30, so that it is convenient for the staff to install or disassemble the partition assembly 30.
[0030] Please refer to Figures 4 to 5 Furthermore, the tray assembly 20 includes a freeze-drying tray body 21 and two locking groups 22. At least one slot 211 is evenly opened on both sides of the freeze-drying tray body 21 for clamping with the two ends of each first partition plate 31; the two locking groups 22 are respectively arranged on both sides of the freeze-drying tray body 21, for fixing the two ends of each first partition plate 31. In this way, when installing the partition assembly 30, the two ends of each first partition plate 31 are first clamped with the slot 211 respectively, and then the two ends of the first partition plate 31 are fixed by the locking group 22, so that the partition assembly 30 is stably installed on the tray assembly 20.
[0031] Please refer to Figures 3 to 5The cam 222 is provided with a locking block 311 at both ends of each first partition plate 31, and a locking hole 312 is formed on the locking block 311; each locking group 22 includes a fixing piece 221, a sliding rod 222 and at least one "L"-shaped locking rod 223, the fixing piece 221 is fixedly connected to the freeze-drying tray body 21, and the sliding rod 222 is slidably mounted on the fixing piece 221, the long rod end of each locking rod 223 is fixedly connected to the sliding rod 222, and the short rod end is used to engage with each locking hole 312, so as to extend into or extend out of the locking hole 312 as the sliding rod 222 slides. In this way, when the sliding rod 222 is slid, the locking rod 223 extends into the locking hole 312 as the sliding rod 222 moves and is fixedly connected to the locking block 311, so as to fix the partition assembly 30 with the tray assembly 20; or the locking rod 223 extends out of the locking hole 312 as the sliding rod 222 moves and is separated from the locking block 311, so that the partition assembly 30 can be separated from the tray assembly 20.
[0032] Please refer to Figure 5 Furthermore, each locking group 22 also includes a return spring 224, which is installed on the slide bar 222, one end of the return spring 224 is fixedly connected to the fixing piece 221, and the other end is fixedly connected to any locking rod 223, and satisfies: when the locking rod 223 extends out of the locking hole 312, the locking rod 223 compresses the return spring 224 to reset the locking rod 223 through the return spring 224. In this way, when placing the partition assembly 30, first pull the slide bar 222, adjust the position of the locking rod 223, and then place the partition assembly 30 on the tray assembly 20, then release the slide rail, and the slide bar 222 moves under the elastic force of the return spring 224, sending each locking rod 223 into each locking hole 312, thereby locking the partition assembly 30 and the tray assembly 20 to prevent the partition assembly 30 from shifting when adding materials.
[0033] Please refer to Figure 6 Furthermore, the freeze-drying material forming device 10 also includes a scraper assembly 40, which includes two scraper rails 41 and a scraper plate 42 of the same structure. The two scraper rails 41 are respectively installed on the top surfaces of the two ends of each first partition plate 31, and the two ends of the scraper plate 42 are respectively slidably installed on the two scraper rails 41. The bottom surface of the scraper plate 42 is flush with the top surface of the freeze-drying tray body 21, so that it can reciprocate along the two scraper rails 41 to scrape the material in the freeze-drying tray flat and remove the material exceeding the top surface of the freeze-drying tray body 21. In this way, it can be ensured that the amount of material in each material grid is the same as the preset capacity, thereby ensuring that the water sublimation rate of each material block is the same as the predetermined rate.
[0034] Please refer to Figure 7Furthermore, the freeze-drying material forming device 10 also includes a vibration component 50, which includes a vibration frame 51, two vibration brackets 52 and a vibration motor 53. The two vibration brackets 52 are symmetrically installed on both sides of the bottom surface of the vibration frame 51. The vibration frame 51 is used to place the bottom end of the freeze-drying tray body 21. The vibration motor 53 is installed on the vibration frame 51 to drive the vibration frame 51 to vibrate, so as to vibrate the material in the freeze-drying tray body 21 evenly, thereby making the material in each material grid uniform.
[0035] Please refer to Figures 7 and 8 Furthermore, the vibration assembly 50 also includes at least four vibration connecting parts 54. At least four connecting grooves 55 are symmetrically opened on both sides of the top surface of the vibration frame 51. The bottom end of each vibration connecting part 54 is fixedly connected to the two vibration brackets 52 respectively, and the top end extends into the connecting groove 55. Two vibration springs 56 are also provided in each connecting groove 55. One end of each vibration spring 56 is fixedly connected to the connecting groove 55, and the other end is fixedly connected to each vibration connecting part 54 to enhance the vibration effect of the vibration frame 51.
[0036] Example 1, use of freeze-dried material forming device 10 1. Pull the slide bar 222, adjust the position of the locking bar 223, and hold it; 2. Place the partition assembly 30 into the freeze-drying tray body 21, and place both ends of each first partition plate 31 into the slots 211; 3. Release the slide bar 222, and the locking bars 223 extend into the locking holes 312 to lock the partition assembly 30; 4. Add materials to each material grid; 5. Place the freeze-drying tray body 21 on the vibration frame 51 and start the vibration motor 53; 6. After the material is vibrated evenly, remove the freeze-drying tray body 21 from the vibration frame 51; 7. Slide the scraper plate 42 back and forth to level the materials in each material grid and scrape off the materials that exceed the top surface of the freeze-drying tray body 21; 8. Pull the slide bar 222 to separate the locking bar 223 from each locking hole 312, and remove the partition assembly 30 from the freeze-drying tray body 21; 9. Place the freeze-drying tray body 21 into a freeze dryer for freeze drying.
[0037] In a second aspect, the present invention provides a freeze-drying method for fermented Cordyceps sinensis mycelium, comprising the following steps: S1, performing solid-liquid separation on the fermented Cordyceps sinensis mycelium and the fermentation liquid after fermentation culture at a temperature below a first predetermined temperature, wherein the first predetermined temperature is 40° C.; S2, spreading the separated viscous fermented Cordyceps sinensis mycelium in the tray assembly 20 of the freeze-drying material forming device 10; S3, placing the freeze-drying tray body 21 on the vibration frame 51, and starting the vibration motor 53 to vibrate the fermented Cordyceps sinensis mycelium; S4, removing the freeze-drying tray body 21 from the vibration frame 51, pulling the scraper plate 42, and scraping off the fermented Cordyceps sinensis mycelium beyond the top surface of the freeze-drying tray body 21; S5, removing the partition assembly 30 from the tray assembly 20, so that the fermented Cordyceps sinensis mycelium in the tray assembly 20 forms a plurality of Cordyceps sinensis mycelium blocks, and gaps are formed between the Cordyceps sinensis mycelium blocks, so as to increase the contact area between the Cordyceps sinensis mycelium blocks and the external airflow and improve the water sublimation rate of the Cordyceps sinensis mycelium blocks in the central area of the tray assembly 20; S6, sending the freeze-drying tray body 21 into a freezing device, and maintaining it at a second predetermined temperature for a first predetermined time to completely freeze the Cordyceps sinensis mycelium block, wherein the second predetermined temperature is -30°C to -50°C, and the first predetermined time is 4 to 8 hours; S7, taking the freeze-drying tray body 21 out of the freezing device, sending it into a vacuum drying device, first evacuating to a predetermined pressure, then heating to a third predetermined temperature, and maintaining it for a second predetermined time, so as to remove most of the moisture in the Cordyceps sinensis mycelium block, wherein the predetermined pressure is 10-100 Pa, the third predetermined temperature is 10° C.-45° C., and the second predetermined time is 24-80 hours, so as to remove 90% of the moisture in the Cordyceps sinensis mycelium block; S8, raising the temperature to a fourth predetermined temperature in the vacuum drying device and maintaining the temperature for a third predetermined time to further reduce the moisture content of the Cordyceps sinensis mycelium block, wherein the fourth predetermined temperature is 45° C. to 55° C., the third predetermined time is 3 to 5 hours, and the moisture content of the Cordyceps sinensis mycelium block should be less than 3%; S9, taking out the freeze-drying tray body 21 from the vacuum drying device, and taking out the freeze-dried Cordyceps sinensis mycelium blocks from the freeze-drying tray body 21; S10, processing the freeze-dried Cordyceps sinensis mycelium blocks into freeze-dried Cordyceps powder through a crushing device.
[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A freeze-drying material forming device, characterized in that: It includes a tray assembly and a partition assembly, including a tray assembly and a partition assembly, the tray assembly is used to place materials to be processed, the partition assembly can be detachably installed in the tray assembly, the partition assembly includes at least two first partition plates with the same structure and at least two second partition plates with the same structure, each first partition plate and each second partition plate are staggered with each other to form a plurality of material grids arranged in a mesh shape, which are used to form a plurality of material blocks in the material of the tray assembly after the partition assembly is separated from the tray assembly, and gaps are formed between the material blocks to increase the contact area between the material and the external airflow and improve the moisture sublimation rate of the material in the central area of the tray assembly.
2. The freeze-drying material forming device according to claim 1, characterized in that: The sizes of the material grids are different to form material blocks of different sizes in different areas of the tray assembly, so that the moisture sublimation rates of the material blocks in different areas of the tray assembly are similar; each first partition plate and each second partition plate are wavy to increase the contact area between each material block and the external airflow and improve the moisture sublimation rate of the material.
3. The freeze-dried material forming device according to claim 1, characterized in that: At least one connecting rod is provided on the top of each material grid, and at least one ventilation column is installed on the connecting rod to form ventilation holes on each material block to increase the water sublimation rate of each material block; pull rods are installed on the top surfaces of both ends of each first partition plate to facilitate lifting the partition assembly.
4. The freeze-drying material forming device according to claim 1, characterized in that: The tray assembly includes a freeze-drying tray body and two locking groups. Both sides of the freeze-drying tray body are evenly provided with at least one slot for clamping with the two ends of each first partition plate; the two locking groups are respectively arranged on both sides of the freeze-drying tray body for fixing the two ends of each first partition plate.
5. The freeze-dried material forming device according to claim 4, characterized in that: Both ends of each first partition plate are provided with locking blocks, and locking holes are opened on the locking blocks; each locking group includes a fixing piece, a sliding rod and at least one "L"-shaped locking rod, the fixing piece is fixedly connected to the freeze-drying tray body, and the sliding rod is slidably installed on the fixing piece, the long rod end of each locking rod is fixedly connected to the sliding rod, and the short rod end is used to engage with each locking hole so as to extend into or out of the locking hole as the sliding rod slides.
6. The freeze-dried material forming device according to claim 5, characterized in that: Each locking group also includes a return spring, which is installed on the sliding rod. One end of the return spring is fixedly connected to the fixing member, and the other end is fixedly connected to any locking rod, and satisfies: when the locking rod extends from the locking hole, the locking rod compresses the return spring to reset the locking rod through the return spring.
7. The freeze-dried material forming device according to claim 6, characterized in that: The freeze-drying material forming device also includes a scraper assembly, which includes two scraper rails and a scraper plate of the same structure. The two scraper rails are respectively installed on the top surfaces at both ends of each first partition plate, and the two ends of the scraper plate are respectively slidably installed on the two scraper rails. The bottom surface of the scraper plate is flush with the top surface of the freeze-drying tray body, so that it can reciprocate along the two scraper rails to scrape the material in the freeze-drying tray body flat and remove the material exceeding the top surface of the freeze-drying tray body.
8. The freeze-dried material forming device according to claim 7, characterized in that: The freeze-dried material forming device also includes a vibration component, which includes a vibration frame, two vibration brackets and a vibration motor. The two vibration brackets are symmetrically installed on both sides of the bottom surface of the vibration frame. The vibration frame is used to place the bottom end of the freeze-drying tray body. The vibration motor is installed on the vibration frame to drive the vibration frame to vibrate so as to vibrate the material in the freeze-drying tray body evenly.
9. The freeze-dried material forming device according to claim 8, characterized in that: The vibration assembly also includes at least four vibration connecting parts. At least four connecting grooves are symmetrically opened on both sides of the top surface of the vibration frame. The bottom end of each vibration connecting part is fixedly connected to two vibration brackets respectively, and the top end extends into the connecting groove. Two vibration springs are also provided in each connecting groove. One end of each vibration spring is fixedly connected to the connecting groove, and the other end is fixedly connected to each vibration connecting part to enhance the vibration effect of the vibration frame.
10. A Cordyceps freeze-drying method, characterized in that: The following steps are involved: S1, performing solid-liquid separation on the fermented Cordyceps sinensis mycelium and the fermentation liquid after fermentation culture at a temperature below a first predetermined temperature; S2, spreading the separated viscous fermented Cordyceps sinensis mycelium on a tray assembly of the freeze-drying material forming device according to any one of claims 1 to 9; S3, placing the freeze-drying plate body on a vibration frame, and starting the vibration motor to vibrate the fermented Cordyceps sinensis mycelium uniformly; S4, removing the freeze-drying tray body from the vibration frame, pulling the scraper plate to scrape off the fermented Cordyceps sinensis mycelium that exceeds the top surface of the freeze-drying tray body; S5, removing the partition assembly from the tray assembly, so that the fermented Cordyceps sinensis mycelium in the tray assembly forms a plurality of Cordyceps sinensis mycelium blocks, and gaps are formed between the Cordyceps sinensis mycelium blocks, so as to increase the contact area between the Cordyceps sinensis mycelium blocks and the external airflow and improve the water sublimation rate of the Cordyceps sinensis mycelium blocks in the central area of the tray assembly; S6, placing the freeze-drying tray body into a freezing device, and maintaining the freeze-drying tray body at a second predetermined temperature for a first predetermined time to completely freeze the Cordyceps sinensis mycelium block; S7, taking the freeze-drying tray body out of the freezing device, sending it into a vacuum drying device, first evacuating to a predetermined pressure, then heating it to a third predetermined temperature, and maintaining it for a second predetermined time, so as to remove most of the moisture in the Cordyceps sinensis mycelium block; S8, raising the temperature to a fourth predetermined temperature in the vacuum drying device and maintaining the temperature for a third predetermined time to further reduce the moisture content of the Cordyceps sinensis mycelium block; S9, taking out the freeze-drying tray body from the vacuum drying device, and taking out the freeze-dried Cordyceps sinensis mycelium blocks from the freeze-drying tray body; S10, processing the freeze-dried Cordyceps sinensis mycelium blocks into freeze-dried Cordyceps powder through a crushing device.