A vacuum freeze dryer and freeze-drying process

Abstract

This application relates to the field of vacuum drying technology and provides a vacuum freeze dryer, including a vacuum drying chamber, a first storage unit, a second storage unit, a cold trap, a chamber door, and a spacer. A connecting pipe is provided between the vacuum drying chamber and the cold trap. A regulating valve is installed in the connecting pipe. The chamber door includes a first chamber door and a second chamber door, which are respectively installed at both ends of the vacuum drying chamber. The spacer is provided in the middle section of the vacuum drying chamber, dividing the space of the vacuum drying chamber into a first region and a second region. The first storage unit and the second storage unit are both located in the vacuum drying chamber and are staggered. A sliding member is built into the vacuum drying chamber. This application has the effect of separating freeze-drying. In addition, a freeze-drying process is also provided.

Description

Technical Field

[0001] This application relates to the field of vacuum drying technology, and in particular to a vacuum freeze dryer and freeze drying process. Background Technology

[0002] A freeze dryer is a low-temperature drying device that uses the principle of sublimation to dehydrate materials. The working principle of a freeze dryer is to freeze the water-containing material, then heat it in a low-temperature, high-vacuum environment. As the temperature rises, the ice does not melt into water but directly sublimates into gas, achieving dehydration. After dehydration, the freeze dryer is generally equipped with a cold trap to capture the gaseous water. The cold trap is a trap that captures gas by condensation on a cooled surface; it is placed between the vacuum container and the pump and is used to adsorb gas or capture oil vapor.

[0003] Traditional vacuum drying equipment is usually designed as a single storage area, where the material is in a fixed position during the drying process and cannot be adjusted as needed. This may result in uneven drying or require frequent interruptions of the drying process to rearrange the material, and may also cause the material to become damp, affecting the drying effect. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a vacuum freeze dryer and a freeze-drying process.

[0005] This application provides a vacuum freeze dryer and freeze-drying process, which adopts the following technical solution:

[0006] A vacuum freeze dryer includes a vacuum drying chamber, a first storage unit, a second storage unit, a cold trap, a chamber door, and a spacer. A connecting pipe is provided between the vacuum drying chamber and the cold trap. A regulating valve is installed in the connecting pipe. The chamber door includes a first chamber door and a second chamber door, which are respectively installed at both ends of the vacuum drying chamber. A rotatable spacer is provided in the middle section of the vacuum drying chamber, which divides the space of the vacuum drying chamber into a first region and a second region. The first storage unit and the second storage unit are both located in the vacuum drying chamber and are staggered. A sliding member is built into the vacuum drying chamber, and the first storage unit and the second storage unit are slidably connected to the sliding member. The first storage unit and the second storage unit can move and switch to the first region or the second region through the sliding member passing through the spacer.

[0007] By adopting the above technical solution, the vacuum drying chamber can be divided into a first area and a second area using spacers, and the first and second areas can be rotated and switched to merge. Different products can be freeze-dried separately using the first and second areas. At the same time, the first and second storage components are staggered so that they can be conveniently stored in one area at the same time, and can be moved to the other area by sliding components. One area can be used as a low-temperature discharge area to achieve low-temperature discharge, reduce the occurrence of product re-dampening and bacterial growth, and can also be staggered to ensure that when different products require different freeze-drying times, products that need to continue freeze-drying can continue to dry when they are discharged in a staggered manner.

[0008] Optionally, the connecting pipe is provided with two connecting branches, and each connecting branch is provided with the regulating valve, and the two connecting branches are respectively connected to the first area and the second area.

[0009] By adopting the above technical solution and setting up two connecting branch pipes, the flow rate of the two connecting branch pipes can be adjusted separately using the adjusting device, thereby allowing for separate adjustment of the sublimation rate and efficiency of freeze drying in the first and second regions.

[0010] Optionally, the slider is further provided with a driving member, which drives the first storage member and the second storage member to move along the slider; wherein, the slider includes a first sliding part and a second sliding part; the first sliding part and the second sliding part are offset, the first sliding part is slidably connected to the first storage member, and the second sliding part is slidably connected to the second storage member.

[0011] By adopting the above technical solution, the driving member can drive the first storage member to move along the first sliding part to switch to the first area or the second area. The driving member can also drive the second storage member to move along the second sliding part and switch to the first area or the second area. At the same time, the first storage member and the second storage member, as well as the first sliding part and the second sliding part, are staggered, so that the first storage member and the second storage member can be located in the same area and stacked together under the drive of the first driving member.

[0012] Optionally, the driving component includes a driving part, a rotating part, and a bearing part; at least two sets of bearing parts are provided and are located on the sliding path of the sliding component; the rotating part passes through all the bearing parts and is pivotally connected to the bearing parts; the rotating part is connected to the driving part, and the driving part provides driving; the rotating part is screwed to the first storage component or the second storage component.

[0013] By adopting the above technical solution, when the rotating part rotates along the bearing part, due to the screw connection, the first or second storage component slides along the sliding component, thereby driving the first or second storage component to move and switch between different areas.

[0014] Optionally, the rotating part is further provided with a sealing part; the sealing part is slidably connected to the sliding member and screwed to the rotating part.

[0015] By adopting the above technical solution, when the rotating part is rotating, the sealing part moves along the sliding part, while blocking the gap left by the spacer, reducing the communication gap between the first region and the second region.

[0016] Optionally, the spacer includes a spacer portion, a spacer frame, a pushing portion, a guide portion, a pivot portion, and a switching portion; the spacer frame is installed on the inner wall of the vacuum drying chamber and divides the vacuum drying chamber into a first region and a second region; two sets of guide portions are provided, respectively installed at both ends of the vacuum drying chamber along the vertical direction, and each set of guide portions is provided with a pushing portion; the switching portion is connected to one of the pushing portions and slidably connected to one set of guide portions; the pivot portion is connected to the other pushing portion and slidably connected to the other set of guide portions; one end of the spacer portion is connected to the switching portion, and the other end is movably connected to the pivot portion, and under the drive of the pushing portion, it fits against the spacer frame and closes the spacer frame.

[0017] By adopting the above technical solution, when it is necessary to separate the first region and the second region, the pushing part uses the pivoting part and the switching part to move the spacing part away from the spacing frame. When it moves to a position close to the pushing part, the switching part drives the spacing part to rotate, so that the spacing part switches to a position where it can be embedded in the frame opening of the spacing frame. Then, the pushing part synchronously drives the pivoting part and the switching part to move towards the spacing frame, and synchronously drives the spacing part to be embedded in the frame opening of the spacing frame, thereby closing the frame opening of the spacing frame, so as to separate the first region and the second region by using the spacing part and the spacing frame.

[0018] Optionally, the opening within the spacer frame is a frustum-shaped opening, and the outer wall of the spacer portion is also frustum-shaped and matches the opening.

[0019] By adopting the above technical solution, the frustum-shaped opening and the frustum-shaped spacer are used to make the spacer more secure when blocking the frustum-shaped frame opening, thereby further improving the sealing performance of the spacer.

[0020] Optionally, the spacer frame is provided with a clearance groove, and the sliding member is located in the clearance groove; the spacer portion is provided with a closing portion, and the closing portion engages with the clearance groove.

[0021] By adopting the above technical solution, the sliding part is avoided by using the clearance groove. When the interval part is in contact with the interval frame, the closing part closes the clearance groove simultaneously, thereby reducing the connection gap between the first region and the second region.

[0022] Optionally, both the first and second storage components are provided with a movable part at their bottoms.

[0023] By adopting the above technical solution, both the first and second storage components can be limited and guided by the sliding component, and then supported by the moving part, thereby ensuring the stable movement of the first and second storage components.

[0024] A freeze-drying process, applied to the above-mentioned freeze-drying equipment, includes the following steps:

[0025] Wool: Prepare raw materials and perform pretreatment;

[0026] Rough selection: The raw materials are roughly selected to remove those that do not meet the requirements;

[0027] Cleaning: Rinse the raw materials thoroughly;

[0028] Cutting: Cut into slices, cubes, or segments according to specifications;

[0029] Ingredients: After blanching or steaming, they are placed in a cooling device to cool to room temperature, and then the surface water is removed using a centrifugal drainer.

[0030] Freezing: The raw materials are pre-loaded into the material tray and placed in a special tunnel that is compatible with the freeze dryer to freeze to the specified temperature;

[0031] Freeze-drying: Open the chamber door and send the raw material into the first or second storage unit in the vacuum drying chamber. Move the first or second storage unit to the first or second area as needed. After closing the chamber door, open the cold trap to perform freeze-drying sublimation.

[0032] Finished product: Open the first or second compartment door, take out the frozen and sublimated product, and weigh and package it as required.

[0033] By adopting the above technical solution and according to the above freeze-drying process, the products to be freeze-dried can be frozen separately or in batches, which can speed up the freezing efficiency and reduce the risk of moisture absorption.

[0034] In summary, this application includes at least one of the following beneficial technical effects:

[0035] 1. The vacuum drying chamber can be divided into a first area and a second area by using spacers. The first area and the second area can be rotated and switched to merge. Different products can be freeze-dried separately using the first area and the second area. At the same time, the first storage unit and the second storage unit are staggered so that they can be stored in one area at the same time. They can be moved to the other area by using sliding parts. One area can be used as a low temperature discharge area to achieve low temperature discharge, reduce the occurrence of product re-moistening and bacterial growth. At the same time, the discharge can be staggered to ensure that when different products require different freeze-drying times, products that need to continue freeze-drying can continue to dry when the discharge is staggered.

[0036] 2. The driving member can drive the first storage member to move along the first sliding part to switch to the first area or the second area. The driving member can also drive the second storage member to move along the second sliding part and switch to the first area or the second area. At the same time, the first storage member and the second storage member, as well as the first sliding part and the second sliding part, are staggered, so that the first storage member and the second storage member can be located in the same area and stacked together under the drive of the driving member.

[0037] 3. When the rotating part rotates along the bearing part, due to the screw connection, the first or second storage component slides along the sliding component, thereby driving the first or second storage component to move and switch between different areas.

[0038] 4. When it is necessary to separate the first region and the second region, the pushing part uses the pivoting part and the switching part to move the spacing part away from the spacing frame. When it moves to a position close to the pushing part, the switching part drives the spacing part to rotate, so that the spacing part switches to a position where it can be embedded in the frame opening of the spacing frame. Then the pushing part synchronously drives the pivoting part and the switching part to move towards the spacing frame, and synchronously drives the spacing part to be embedded in the frame opening of the spacing frame, thereby closing the frame opening of the spacing frame, so as to separate the first region and the second region using the spacing part and the spacing frame. Attached Figure Description

[0039] Figure 1 This is a cross-sectional structural schematic diagram of a freeze dryer in one embodiment of this application;

[0040] Figure 2 This is a front view schematic diagram of the vacuum drying chamber in some embodiments of this application;

[0041] Figure 3 This is a cross-sectional structural diagram of the vacuum drying chamber in some embodiments of this application;

[0042] Figure 4 This is a three-dimensional structural schematic diagram of the slider in some embodiments of this application;

[0043] Figure 5This is a schematic diagram of the first cross-sectional structure of the vacuum drying chamber in a side view of some embodiments of this application;

[0044] Figure 6 This is a schematic diagram of a second cross-sectional structure of the vacuum drying chamber in a side view of some embodiments of this application;

[0045] Figure 7 This is a schematic cross-sectional view of the vacuum drying chamber in some embodiments of this application.

[0046] Figure 8 This is a schematic flowchart of the freeze-drying process in some embodiments of this application;

[0047] The labels in the attached diagram are as follows: 1. Vacuum drying chamber; 11. First region; 12. Second region; 13. Sliding member; 131. First sliding part; 132. Second sliding part; 14. Spacer; 141. Spacer; 1411. Closing part; 142. Spacer frame; 1421. Clearance groove; 143. Guide part; 144. Pivoting part; 145. Switching part; 146. Pushing part; 15. Driving member; 151. Driving part; 152. Rotating part; 153. Bearing part; 154. Sealing part; 2. First storage component; 3. Second storage component; 4. Cold trap; 5. Chamber door; 51. First chamber door; 52. Second chamber door; 6. Connecting pipe; 61. Connecting branch pipe; 7. Regulating valve; 8. Moving part. Detailed Implementation

[0048] The following specific examples illustrate the implementation methods of this application. Those skilled in the art can easily understand other advantages and effects of this application from the information disclosed herein. This application can also be implemented or applied through other different specific embodiments, and various details in this application can be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0049] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

[0050] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.

[0051] Furthermore, the terms "first" and "second" are used only to indicate an objective and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0052] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0053] The following is in conjunction with the appendix Figure 1 - Appendix Figure 8 This application will be described in further detail below.

[0054] This application discloses a vacuum freeze dryer and a freeze-drying process.

[0055] A vacuum freeze dryer, reference Figure 1 and Figure 2 As shown, it includes a vacuum drying chamber 1, a first storage unit 2, a second storage unit 3, a cold trap 4, and a chamber door 5; a connecting pipe 6 is provided between the vacuum drying chamber 1 and the cold trap 4. The vacuum drying chamber 1 is equipped with heating plates, drain pipes, vacuum pipes, and other equipment, while the cold trap 4 is equipped with refrigeration coils, fans, defrosting systems, and other equipment to form a complete sublimation circuit. The connecting pipe 6 provides a connecting space for the moisture in the product in the vacuum drying chamber 1 to sublimate with the moisture in the cold trap 4.

[0056] A regulating valve 7 is installed inside the connecting pipe 6. The regulating valve 7 can adjust the degree of closure of the connecting pipe 6, thereby determining the size of the connecting space between the vacuum drying chamber and the cold trap 4.

[0057] The door 5 includes a first door 51 and a second door 52. The first door 51 and the second door 52 are respectively installed at both ends of the vacuum drying chamber 1. The first door 51 and the second door 52 can open both ends of the vacuum drying chamber 1, making it convenient to store the products to be freeze-dried from both ends.

[0058] A rotatable partition 14 is provided in the middle section of the vacuum drying chamber 1. The partition 14 divides the space of the vacuum drying chamber 1 into a first area 11 and a second area 12. After the space of the vacuum drying chamber 1 is divided by the partition 14, the drying area of ​​the vacuum drying chamber 1 is divided. The first area 11 and the second area 12 can be used as drying areas for different products, such as freeze-dried fruits and vegetables or freeze-dried meat, which improves the space utilization. After the partition 14 is rotated and switched, the first area and the second area are connected and merged into the same area. Therefore, the space can be rotated and switched according to the needs.

[0059] The vacuum drying chamber 1 is equipped with a balance plate at the bottom, which forms a horizontal surface at the bottom of the cylindrical vacuum drying chamber 1, making it easier to load or unload products.

[0060] The first area 11 and the second area 12 can be further divided into a low-temperature discharge area and a feeding area. After feeding, the feeding area is freeze-dried. After drying, the product is transported to the low-temperature discharge area, thereby reducing the occurrence of the product getting damp again and the growth of bacteria. This can further improve the separation of dry and wet materials and provide more stable protection for the product.

[0061] The first storage unit 2 and the second storage unit 3 are both located inside the vacuum drying chamber 1, and the first storage unit 2 and the second storage unit 3 are staggered so that the first storage unit 2 and the second storage unit 3 can be stacked on each other, so that they can be stored simultaneously in the first area 11 or the second area 12, thereby increasing the number of products that can be stored in that area. The first storage unit 2 and the second storage unit 3 can both be storage racks, and the storage racks are equipped with storage plates for placing or storing products. The storage plates are provided with several ventilation holes to ensure that the moisture is fully sublimated.

[0062] If the first area 11 and the second area 12 are divided into a low-temperature discharge area and a feeding area, the material can be discharged from the feeding area to the low-temperature discharge area according to the first storage component 2 or the second storage component 3. The product in the feeding area can continue to be dried, so that products requiring different drying times can be discharged separately. At the same time, the spacer 14 separates the two areas so that the freeze-drying situation of each area will not be affected during the discharge.

[0063] The vacuum drying chamber 1 has a built-in sliding member 13. The first storage member 2 and the second storage member 3 are slidably connected to the sliding member 13. The sliding member 13 can be a sliding rail. The first storage member 2 and the second storage member 3 can be equipped with sliding blocks. By utilizing the limiting situation between the sliding block and the sliding rail, the first storage member 2 and the second storage member 3 can only move along the sliding rail through the sliding block. The movement trajectory of the first storage member 2 and the second storage member 3 is limited, and the interference between the staggered first storage member 2 and the second storage member 3 is avoided.

[0064] The first storage component 2 and the second storage component 3 can also be moved and switched to the first region 11 or the second region 12 through the sliding component 13 and the spacer 14, so that the first storage component 2 and the second storage component 3 can be put into the vacuum drying chamber 1 from the first chamber door 51 or the second chamber door 52.

[0065] After using the spacer 14, and dividing the first area 11 and the second area 12 into a low-temperature discharge area and a feeding area, the first storage component 2 or the second storage component 3 can also pass through the spacer 14 in the feeding area to enter the low-temperature discharge area, so as to reduce the humid air interference that the product is subjected to during discharge.

[0066] The sliding member 13 is provided on both sides of the vacuum drying chamber 1, and the first storage member 2 and the second storage member 3 are both divided into left and right parts. The left and right parts are respectively connected to the sliding member 13 on both sides, which can facilitate separate storage of materials.

[0067] Specifically, the vacuum drying chamber 1 can be divided into a first area 11 and a second area 12 by the spacer 14. Different products can be freeze-dried separately by the first area 11 and the second area 12. At the same time, the first storage unit 2 and the second storage unit 3 are staggered so that they can be stored in one area at the same time and moved to another area by the sliding member 13. One area can be used as a low temperature discharge area to achieve low temperature discharge, reduce the occurrence of product re-dampening and bacterial growth. At the same time, the discharge can be staggered to ensure that when different products require different freeze-drying times, the products that need to continue freeze-drying can continue to dry.

[0068] Further reference Figure 1 As shown, the connecting pipe 6 is provided with two connecting branch pipes 61, and each connecting branch pipe 61 is provided with a regulating valve 7. The two connecting branch pipes 61 are respectively connected to the first region 11 and the second region 12. After the two connecting branch pipes 61 are provided, the flow of the two connecting branch pipes 61 can be adjusted by the regulating component, thereby separately adjusting the sublimation rate and efficiency of the freeze drying in the first region 11 and the second region 12.

[0069] In some embodiments, reference Figure 2As shown, the sliding member 13 includes a first sliding part 131 and a second sliding part 132; the first sliding part 131 and the second sliding part 132 are staggered, the first sliding part 131 is slidably connected to the first storage member 2, and the second sliding part 132 is slidably connected to the second storage member 3. The first sliding part 131 can be a first sliding rail, and the second sliding part 132 can be a second sliding rail. The first sliding part 131 and the second sliding part 132 are used to guide and limit the first storage member 2 and the second storage member 3 respectively, and the two are staggered synchronously, so that the first storage member 2 and the second storage member 3 can move stably and staggered, so that the first storage member 2 and the second storage member 3 do not interfere with each other when moving.

[0070] refer to Figure 3 As shown, both the first sliding part 131 and the second sliding part 132 are provided with a driving member 15. The driving member 15 drives the first storage member 2 and the second storage member 3 to move along the sliding member 13. The driving member 15 can drive the first storage member 2 and the second storage member 3 to move along the sliding member 13, so that the first compartment door 51 and the second compartment door 52 can also drive the first storage member 2 and the second storage member 3 to move even when they are not opened.

[0071] Specifically, the driving member 15 can drive the first storage member 2 to move along the first sliding part 131 to switch to the first region 11 or the second region 12. The driving member 15 can also drive the second storage member 3 to move along the second sliding part 132 and switch to the first region 11 or the second region 12. At the same time, the first storage member 2 and the second storage member 3, as well as the first sliding part 131 and the second sliding part 132 are staggered, so that the first storage member 2 and the second storage member 3 can be located in the same region and stacked together under the drive of the driving member 15.

[0072] Furthermore, refer to Figure 3 As shown, the drive member 15 includes a drive part 151, a rotating part 152 and a bearing part 153; at least two sets of bearing parts 153 are provided and are located on the sliding path of the slider 13. The bearing parts 153 may be fixed bearings to provide support for the rotating part 152.

[0073] The rotating part 152 passes through all the bearing parts 153 and is pivotally connected to the bearing parts 153. The rotating part 152 may be a rotating screw, which can pivot along the bearing parts 153.

[0074] The rotating part 152 is connected to the driving part 151, which provides drive. The driving part 151 may be a drive motor, which can drive the rotating part 152 to rotate, so that the rotating part 152 rotates along the bearing part 153.

[0075] The rotating part 152 is screwed to the first storage component 2 or the second storage component 3. The first storage component 2 and the second storage component 3 are provided with sliding blocks. The sliding blocks are slidably connected to the first sliding part 131 or the second sliding part 132. The sliding blocks are provided with threaded holes. When the rotating part 152 rotates along the bearing part 153, the sliding blocks slide along the first sliding part 131 or the second sliding part 132 through the threaded holes, thereby driving the first storage component 2 or the second storage component 3 to slide, so that the first storage component 2 or the second storage component 3 moves to switch between different areas.

[0076] Furthermore, refer to Figure 4 As shown, the rotating part 152 is also provided with a sealing part 154. The sealing part 154 is slidably connected to the sliding member 13 and screwed to the rotating part 152. The sealing part 154 can be a sealing block. The sealing block also has a threaded hole and is slidably connected to the sliding member 13, so that when the rotating part 152 rotates, the sealing part 154 moves along the sliding member 13, while blocking the gap left by the spacer 14, reducing the communication between the first region 11 and the second region 12.

[0077] In some embodiments, reference Figure 5 and Figure 6 As shown, the spacer 14 includes a spacer portion 141, a spacer frame 142, a pushing portion 146, a guiding portion 143, a pivoting portion 144, and a switching portion 145; the spacer frame 142 is installed on the inner wall of the vacuum drying chamber 1 and divides the vacuum drying chamber 1 into a first region 11 and a second region 12. The opening of the spacer frame 142 is a connecting point, and the first storage member 2 and the second storage member 3 can switch between any region from the opening of the spacer frame 142.

[0078] Two sets of guide sections 143 are provided, which are respectively installed at both ends of the vacuum drying chamber 1 in the vertical direction. Each set of guide sections 143 is provided with a pushing part 146. The guide section 143 can be a guide rail. The guide rail is divided into two sets, which are located at the top and bottom of the vacuum drying chamber 1, respectively, and are both located in the first area 11. The pushing part 146 can be a cylinder or a telescopic cylinder. The pushing part is located at the end of the guide section 143 away from the spacer frame 142.

[0079] The switching part 145 is connected to a pushing part 146 and is slidably connected to a set of guide parts 143. The pivoting part 144 is connected to another pushing part 146 and is slidably connected to another set of guide parts 143. The switching part 145 can be a switching motor, and the pivoting part 144 can be a pivoting shaft and a pivoting bearing. The pivoting bearing is slidably connected to a guide part 143, and the pivoting shaft can pivot along the pivoting bearing. The switching part 145 is provided with a switching frame, which is slidably connected to another guide part 143. At the same time, the pushing ends of the two pushing parts 146 are respectively connected to the pivoting part 144 and the switching part 145, so that the pushing part 146 can push the pivoting part 144 and the switching part 145 along the guide part 143.

[0080] One end of the partition 141 is connected to the switching part 145, and the other end is movably connected to the pivot part 144. Under the drive of the pushing part 146, it fits against the partition frame 142 and closes the partition frame 142. The partition 141 can be a partition cover, and the partition cover fits the frame opening of the partition frame 142. That is, the inner diameter, size, and style of the frame opening are consistent with the outer diameter, size, and style of the partition cover, so that the partition cover can be embedded in the frame opening, thereby separating the first region 11 and the second region 12.

[0081] Specifically, when it is necessary to separate the first region 11 and the second region 12, the pushing part 146 uses the pivoting part 144 and the switching part 145 to move the spacing part 141 away from the spacing frame 142. When it moves to a position close to the pushing part 146, the switching part 145 drives the spacing part 141 to rotate, so that the spacing part 141 switches to a position that can be embedded in the frame opening of the spacing frame 142. Then, the two pushing parts 146 synchronously drive the pivoting part 144 and the switching part 145 to move towards the spacing frame 142, and synchronously drive the spacing part 141 to be embedded in the frame opening of the spacing frame 142, thereby closing the frame opening of the spacing frame 142, so as to separate the first region 11 and the second region 12 using the spacing part 141 and the spacing frame 142.

[0082] When it is necessary to open the partition frame 142 to allow the first storage member 2 and the second storage member 3 to enter any area, the pushing part 146 uses the pivoting part 144 and the switching part 145 to move the partition part 141 away from the partition frame 142, so that the partition part 141 is separated from the partition frame 142. When it moves to a position close to the pushing part 146, the switching part 145 drives the partition part 141 to rotate, so that the partition part 141 rotates to form a 90-degree angle with the partition frame 142. The first storage member 2 and the second storage member 3 can then pass through the frame opening of the partition frame 142 along the sliding member 13, so that the first storage member 2 and the second storage member 3 can stably switch their respective areas.

[0083] Further reference Figure 5 As shown, the opening inside the spacer frame 142 is a frustum-shaped opening, and the outer wall of the spacer portion 141 is also frustum-shaped and matches the opening. By using the frustum-shaped opening and the frustum-shaped spacer portion 141, the spacer portion 141 can be more secure when blocking the frustum-shaped opening, thereby further improving the sealing performance of the spacer.

[0084] The inner diameter of the frustum-shaped opening of the spacer 142 is smaller than the outer diameter of the frustum-shaped spacer 141, which makes the spacer 141 achieve a tighter blocking effect.

[0085] Furthermore, refer to Figure 7As shown, a clearance groove 1421 is provided on the spacer frame 142, and the slider 13 is located in the clearance groove 1421. The clearance groove 1421 is used to make the spacer frame 142 avoid the slider 13. It includes a first sliding part 131 and a second sliding part 132. That is, when the first sliding part 131 and the second sliding part 132 are staggered, the clearance groove 1421 is provided in two sets, which respectively fit the first sliding part 131 and the second sliding part 132.

[0086] refer to Figure 6 and Figure 7 As shown, a closing part 1411 is provided on the spacer 141, and the closing part 1411 is engaged with the relief groove 1421. The closing part 1411 can be a closing cover, and the shape of the closing cover is consistent with the shape of the relief groove 1421. At the same time, when the sliding member 13 is provided with a rotating part 152, the closing part 1411 is also provided with an anti-interference port to avoid the rotating part 152, so that when the closing part 1411 rotates to the relief groove 1421, it will not affect the rotation of the rotating part 152.

[0087] The anti-interference opening and the rotating part 152 can be covered by a sealing part 154. The sealing part 154 is located at both ends of the rotating part 152. When the first storage member 2 or the second storage member 3 moves to another area, the sealing part 154 moves accordingly, simultaneously blocking the anti-interference opening between the closing part 1411 and the rotating part 152, thereby reducing the connection gap between the first area 11 and the second area 12. The sealing part 154 is referenced... Figure 4 As shown.

[0088] In some embodiments, reference Figure 2 As shown, both the first storage component 2 and the second storage component 3 are provided with a moving part 8 at their bottom. The moving part 8 can be a moving wheel. Both the first storage component 2 and the second storage component 3 can be limited and guided by the sliding part 13 and supported by the moving wheel, thereby ensuring the stable movement of the first storage component 2 and the second storage component 3.

[0089] When a movable part 8 is provided, the spacer 141 needs to be provided with a clearance groove 1421 through which the movable part 8 passes, and a closing part 1411 corresponding to closing the clearance groove 1421 is provided.

[0090] This application also provides a freeze-drying process, as described in the reference. Figure 8 As shown, it includes the following steps:

[0091] Wool - Prepare raw materials and perform pretreatment;

[0092] Rough selection - The raw materials are roughly selected to remove those that do not meet the requirements. The requirements can be in terms of size, shelf life, etc.

[0093] Cleaning - Rinse the raw materials thoroughly;

[0094] Cutting - Cut into slices, cubes, or segments according to specifications;

[0095] Ingredients (or cooking) - are blanched or cooked, and then placed in a cooling device to cool to about 15°C, and then the surface water is removed using a centrifugal drainer.

[0096] Freezing - Raw materials are pre-loaded into material trays and placed in a special tunnel that is compatible with the freeze dryer to freeze to the specified temperature. Alternatively, if the production season or the production capacity of the freeze dryer is unbalanced, the pre-mixed raw materials can be directly sent to the cold storage for storage and then enter the next processing step in batches.

[0097] Freeze-drying - Open the first door 51 or the second door 52, send the frozen raw material into the first storage unit or the second storage unit in the vacuum drying chamber 1, and move the first storage unit or the second storage unit to the first area 11 or the second area 12 as needed. After closing the first door 51 or the second door 52, freeze-drying is carried out in conjunction with the cold trap 4.

[0098] Finished product - Open the first compartment door 51 or the second compartment door 52, take out the frozen sublimation completed product, and weigh and package it as required.

[0099] If batch removal and low-temperature discharge are required, the product to be removed is moved to the first area 11 or the second area 12 by the drive component 15 and the sliding component 13, then the spacer 14 is closed, and the temperature of the area is reduced by the cold trap 4 to form a low-temperature discharge area. The door 5 of the area can then be opened for low-temperature discharge. The product in the other area can continue to undergo freeze-sublimation treatment due to the spacer 14.

[0100] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vacuum freeze dryer, characterized in that, The system includes a vacuum drying chamber (1), a first storage unit (2), a second storage unit (3), a cold trap (4), a chamber door (5), and a spacer (14); a connecting pipe (6) is provided between the vacuum drying chamber (1) and the cold trap (4); a regulating valve (7) is provided in the connecting pipe (6); the chamber door (5) includes a first chamber door (51) and a second chamber door (52), which are respectively installed at both ends of the vacuum drying chamber (1); a rotatable spacer (14) is provided in the middle section of the vacuum drying chamber (1), which divides the space of the vacuum drying chamber (1) into a first region (11) and a second region (12); the first storage unit (2) and the second storage unit (3) are both located in the vacuum drying chamber (1), and the first storage unit (2) and the second storage unit (3) are located in the vacuum drying chamber (1). The material components (3) are staggered so that the first material storage component (2) and the second material storage component (3) can be stacked on top of each other in the vertical direction; the vacuum drying chamber (1) is equipped with a sliding component (13), and the first material storage component (2) and the second material storage component (3) are slidably connected to the sliding component (13); wherein, the sliding component (13) includes a first sliding part (131) and a second sliding part (132); the first sliding part (131) and the second sliding part (132) are staggered, the first sliding part (131) is slidably connected to the first material storage component (2), and the second sliding part (132) is slidably connected to the second material storage component (3); the first material storage component (2) and the second material storage component (3) are both moved and switched to the first area (11) or the second area (12) through the sliding component (13) and the spacer (14).

2. The vacuum freeze dryer according to claim 1, characterized in that, The connecting pipe (6) is provided with two connecting branch pipes (61), and each connecting branch pipe (61) is provided with the regulating valve (7). The two connecting branch pipes (61) are respectively connected to the first region (11) and the second region (12).

3. The vacuum freeze dryer according to claim 1, characterized in that, The sliding member (13) is also provided with a driving member (15), which drives the first storage member (2) and the second storage member (3) to move along the sliding member (13).

4. A vacuum freeze dryer according to claim 3, characterized in that, The drive component (15) includes a drive part (151), a rotating part (152), and a bearing part (153); at least two sets of bearing parts (153) are provided and are located on the sliding path of the sliding member (13); the rotating part (152) passes through all the bearing parts (153) and is pivotally connected to the bearing parts (153); the rotating part (152) is connected to the drive part (151), and the drive part (151) provides drive; the rotating part (152) is screwed to the first storage member (2) or the second storage member (3).

5. A vacuum freeze dryer according to claim 4, characterized in that, The rotating part (152) is also provided with a sealing part (154); the sealing part (154) is slidably connected to the sliding member (13) and screwed to the rotating part (152).

6. A vacuum freeze dryer according to claim 1 or 5, characterized in that, The spacer (14) includes a spacer portion (141), a spacer frame (142), a pushing portion (146), a guide portion (143), a pivot portion (144), and a switching portion (145); the spacer frame (142) is installed on the inner wall of the vacuum drying chamber (1) and divides the vacuum drying chamber (1) into the first region (11) and the second region (12); two sets of guide portions (143) are provided, respectively installed at both ends of the vacuum drying chamber (1) along the vertical direction, and each set of guide portions (143) is provided with a [missing information]. The push part (146) is connected to one of the push parts (146) and is slidably connected to a group of guide parts (143); the pivot part (144) is connected to another push part (146) and is slidably connected to another group of guide parts (143); one end of the interval part (141) is connected to the switch part (145), and the other end is movably connected to the pivot part (144), and under the drive of the push part (146), it fits against the interval frame (142) and closes the interval frame (142).

7. A vacuum freeze dryer according to claim 6, characterized in that, The opening inside the spacer frame (142) is a frustum-shaped opening, and the outer wall of the spacer part (141) is frustum-shaped and matches the opening.

8. A vacuum freeze dryer according to claim 6, characterized in that, The spacer frame (142) has a clearance groove (1421) and the sliding member (13) is located in the clearance groove (1421); the spacer part (141) has a closing part (1411) and the closing part (1411) is engaged with the clearance groove (1421).

9. A vacuum freeze dryer according to claim 6, characterized in that, Both the first storage component (2) and the second storage component (3) are provided with a movable part (8) at the bottom.

10. A freeze-drying process, characterized in that, The vacuum freeze dryer according to any one of claims 1-9 comprises the following steps: Wool: Prepare raw materials and perform pretreatment; Rough selection: The raw materials are roughly selected to remove those that do not meet the requirements; Cleaning: Rinse the raw materials thoroughly; Cutting: Cut into slices, cubes, or segments according to specifications; Ingredients: After blanching or steaming, they are placed in a cooling device to cool to room temperature, and then the surface water is removed using a centrifugal drainer. Freezing: The raw materials are pre-loaded into the material tray and placed in a special tunnel that is compatible with the freeze dryer to freeze to the specified temperature; Freeze-drying: Open the door (5), send the raw material into the first or second storage piece in the vacuum drying chamber (1), move the first or second storage piece to the first area (11) or the second area (12) as needed, close the door (5), and open the cold trap (4) for freeze-drying. Finished product: Open the first compartment door (51) or the second compartment door (52), take out the frozen sublimation product, and weigh and package it as required.

Images