A freezer for producing a lyophilized powder

Abstract

The utility model relates to quick freezer technical field, and disclose a kind of quick freezer for producing freeze-dried powder, including freeze-drier cabinet, the door of box being installed in the front side of freeze-drier cabinet and four vertical columns with moving wheel being located in the inside of freeze-drier cabinet, the outer wall of four vertical columns lower end is all sleeved and fixedly connected with fixed block, bottom box is fixedly connected with sealing ring simultaneously in four fixed blocks, the outer wall of four vertical columns is also all sleeved and slidingly connected with moving block.The kind of quick freezer for producing freeze-dried powder, sealing ring is arranged on the upper surface of bottom box, sealing groove is also arranged on the bottom of moving box, and sealing is realized by lifting assembly control moving box descending, in material transfer process, bottom box and moving box form closed space, avoid liquid spilling due to inertia, vibration or inclination, reduce precious material waste, reduce pollution to equipment and environment, reduce cleaning workload.

Description

Technical Field

[0001] This utility model relates to the field of quick-freezing technology, specifically a quick-freezing machine for producing freeze-dried powder. Background Technology

[0002] Freeze-dried powder is a powdery substance produced by freeze-drying technology (such as a vacuum freeze dryer, also known as a freeze dryer). The core principle is to rapidly freeze a solution containing active ingredients (such as aqueous solutions, biological agents, etc.) at low temperatures, and then sublimate the ice directly into water vapor in a vacuum environment to remove moisture, ultimately obtaining a dry solid powder.

[0003] Currently, patent CN217876789U discloses a freeze dryer, including a drying chamber with multiple shelves. Material trays for storing materials are placed on the shelves, which are equipped with oil inlet and return pipes. Auxiliary plates are installed at the left and right ends, top, and rear of the shelves. These auxiliary plates are hollow and have oil inlets and outlets. The auxiliary plates circulate synchronously with the silicone oil within the shelves. Based on this operation, the storage area for the material to be dried can be completely surrounded, reducing energy absorption by the drying chamber shell and other parts, thus enhancing the drying effect and reducing drying time. Furthermore, the operation is simple, greatly improving the material drying yield.

[0004] However, the aforementioned freeze dryers still have the following problems in actual use: During the freezing and drying process of freeze-dried powder using a freeze dryer, the liquid material to be processed is usually placed on a shelf inside the equipment (or in an open container on the shelf). Due to the compact structure and limited internal space of the freeze dryer, operators often cannot directly load the material inside the equipment. Therefore, the conventional operation is to first move the shelf to the outside of the dryer, add the liquid sample outside, and then push the entire shelf into the dryer for subsequent processing.

[0005] However, because the shelves themselves or the containers on them are designed to be open, liquids can easily spill due to inertia, vibration, or tilting when the shelves are moved. This not only pollutes the working environment and increases the cleaning burden, but may also lead to the waste of valuable materials. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a quick-freezing machine for producing freeze-dried powder, which can seal the openings of adjacent bottom boxes and moving boxes when the bottom box and moving box are pushed into the freeze dryer housing to prevent spillage.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a quick-freezing machine for producing freeze-dried powder, comprising a freeze-drying machine housing, a door installed on the front side of the freeze-drying machine housing, and four columns located inside the freeze-drying machine housing, each equipped with a caster wheel. A fixing block is fitted and fixedly connected to the outer wall of the lower end of each of the four columns. A base box is fixedly connected between the four fixing blocks. A sealing ring is fixedly connected to the upper surface of the base box. Moving blocks are also fitted and slidably connected to the outer wall of each of the four columns. A moving box is fixedly connected between the four moving blocks. A sealing groove matching and slidably connected to the sealing ring is opened on the bottom surface of the moving box. A lifting assembly is connected to the side of the base box near the door, and the other end of the lifting assembly is connected to the moving box.

[0008] Furthermore, the upper ends of the four columns are simultaneously fixedly connected to frames, and the side of the frames closest to the door is connected to the lifting assembly.

[0009] Furthermore, the lifting assembly includes an upper block, a bottom block, and an adjustment assembly. The side of the frame near the door is fixedly connected to the side of the upper block, the side of the bottom box near the door is fixedly connected to the side of the bottom block, the upper and lower ends of the adjustment assembly are respectively connected to the upper block and the bottom block, and the middle part of the adjustment assembly is connected to the movable box.

[0010] Furthermore, the adjustment assembly includes a lead screw and a threaded block. The upper and lower ends of the lead screw are rotatably connected to the upper block and the bottom block, respectively. The middle part of the lead screw is threadedly connected to the threaded block, and one side of the threaded block is fixedly connected to the side wall of the movable box.

[0011] Furthermore, a swivel is fixedly connected to the outer wall of the lower end of the lead screw, and several insertion holes are opened on the side wall of the swivel.

[0012] Furthermore, there are no fewer than two movable boxes, lead screws, and threaded blocks, and the two lead screws and threaded blocks have different pitches. The lower ends of the two lead screws both penetrate the bottom block and are connected to a transmission assembly.

[0013] Furthermore, the transmission assembly includes a timing belt and two timing pulleys. The two timing pulleys are respectively sleeved and fixedly connected to the outer wall of the lower end of the two lead screws, and the timing belt is sleeved and slidably connected to the outside of the two timing pulleys.

[0014] Furthermore, a storage box is fixedly connected to the bottom surface of the base block, which is fitted onto the outside of the timing belt and the two timing pulleys.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This quick-freezing machine for producing freeze-dried powder achieves sealing by setting a sealing ring on the upper surface of the bottom box and a sealing groove at the bottom of the moving box, and controlling the descent of the moving box through a lifting component. During the material transfer process, the bottom box and the moving box form a closed space, which avoids liquid spillage due to inertia, vibration or tilting, reduces waste of precious materials, and reduces pollution to equipment and the environment, and reduces cleaning workload. 2. This quick-freezing machine for producing freeze-dried powder has multiple moving boxes that slide and stack on columns. Each layer can be sealed independently (the upper moving box can serve as a sealing cover for the lower layer). It can process multiple layers of materials at the same time without the need for an additional sealing plate (only the top layer needs to be sealed), thus improving space utilization and single-batch freeze-drying capacity, making it suitable for large-scale production needs. 3. This quick-freezing machine for producing freeze-dried powder uses a synchronous belt and synchronous pulleys, with multiple synchronous pulleys connected to multiple lead screws with different pitches. A single power source can drive the synchronous lifting and lowering of multiple moving boxes, simplifying the operation steps and avoiding the tedious adjustment of each layer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall appearance of the present utility model; Figure 2 This is a schematic diagram of the internal structure of the freeze dryer housing of this utility model; Figure 3 This is a detailed connection diagram of the components of this utility model, including the base box, the movable box, and the lifting assembly. Figure 4 This is a detailed connection diagram of the lead screw and transmission assembly of this utility model.

[0017] In the diagram: 1. Freeze dryer housing; 2. Door; 3. Frame; 4. Upper block; 5. Column; 6. Bottom box; 7. Moving box; 8. Fixed block; 9. Moving block; 10. Lead screw; 11. Bottom block; 12. Threaded block; 13. Storage box; 14. Rotary ring; 15. Insertion hole; 16. Synchronous pulley; 17. Synchronous belt; 18. Sealing ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Please see Figures 1-4A quick-freezing machine for producing freeze-dried powder includes a freeze-drying machine housing 1, a door 2 installed on the front side of the freeze-drying machine housing 1, and four columns 5, each equipped with a caster wheel, located inside the freeze-drying machine housing 1. A fixing block 8 is fitted and fixedly connected to the outer wall of the lower end of each of the four columns 5. A bottom box 6 is fixedly connected between the four fixing blocks 8. A sealing ring 18 is fixedly connected to the upper surface of the bottom box 6. Moving blocks 9 are also fitted and slidably connected to the outer wall of each of the four columns 5. A moving box 7 is fixedly connected between the four moving blocks 9. A sealing groove matching and slidably connected to the sealing ring 18 is opened on the bottom surface of the moving box 7. A lifting assembly is connected to the side of the bottom box 6 near the door 2, and the other end of the lifting assembly is connected to the moving box 7.

[0020] like Figures 1 to 4 As shown, when using the quick-freezing machine for producing freeze-dried powder in this utility model, you only need to first lay a triangular ramp at the opening of the freeze-drying machine box 1 (some freeze-drying machine boxes 1 will be directly embedded in the ground, and the bottom side of the inner wall of the freeze-drying machine box 1 will be flush with the ground; some columns 5 do not have casters at the bottom and are directly suspended into the freeze-drying machine box 1 by the slide rail above the column 5. These three methods are all existing technologies and are only used as examples here. They do not conflict with the structure of this utility model). Then, the liquid material to be freeze-dried can be poured into the bottom box 6 and the moving box 7. Then, the staff can control the mobile box 7 to descend through the lifting component. As the mobile box 7 descends, the sealing groove on the bottom surface of the mobile box 7 will gradually fit over the sealing ring 18 of the bottom box 6 until the mobile box 7 reaches the bottom. At this time, a seal is formed between the bottom box 6 and the mobile box 7, which can prevent the liquid material inside the bottom box 6 from shaking and overflowing due to any of the above three situations. To prevent liquid material from overflowing inside the movable box 7, a sealing plate can be installed above the movable box 7. This sealing plate also has a sealing groove at the bottom. Then, a sealing ring 18 is installed above the movable box 7 to seal the opening of the movable box 7. In this way, liquid material overflow from the bottom box 6 and the movable box 7 can be avoided, and at least one less sealing plate can be used (if there are multiple movable boxes 7, even more sealing plates can be saved). After the bottom box 6 and the movable box 7 are sealed, simply send the bottom box 6 and the movable box 7 into the freeze dryer housing 1 in the three ways described above (or other methods may also be used). Then, control the movable box 7 to rise and separate from the bottom box 6 in the same way described above, so as to avoid affecting the subsequent freeze drying.

[0021] It should be noted that: both the freeze dryer body 1 and the door 2 utilize mature technologies found in existing freeze dryers, and current freeze dryers also incorporate, but are not limited to: A condenser (water trap) that captures water vapor generated by the sublimation of materials and prevents it from returning to the drying chamber and contaminating the materials. A refrigeration system that provides a low-temperature environment for the drying oven and condenser, maintaining the temperature difference required for sublimation; A vacuum system that removes gas from the drying chamber and condenser, maintains low pressure (≤1kPa), and promotes the direct sublimation of ice crystals; A heating system that provides heat to the shelves, accelerates ice crystal sublimation, and controls the drying rate; A control system that coordinates the operation of various systems to achieve freeze-drying curve setting, parameter monitoring, and automated operation. In this utility model, only partial improvements are made to the disclosed structure. Structures not mentioned, such as the refrigeration system and the heating system, are not modified in any way and retain their original functions and effects.

[0022] As a preferred embodiment of this utility model, the upper ends of the four columns 5 are simultaneously fixedly connected to the frame 3, and the side of the frame 3 near the door 2 is connected to the lifting assembly.

[0023] More specifically, by setting up frame 3, the connection stability of the upper ends of the four pillars 5 can be improved, ensuring the positional consistency of the base box 6 and the movable box 7 located between the four pillars 5.

[0024] As a preferred embodiment of this utility model, the lifting assembly includes an upper block 4, a bottom block 11, and an adjustment assembly. The side of the frame 3 near the door 2 is fixedly connected to the side of the upper block 4, the side of the bottom box 6 near the door 2 is fixedly connected to the side of the bottom block 11, the upper and lower ends of the adjustment assembly are respectively connected to the upper block 4 and the bottom block 11, and the middle part of the adjustment assembly is connected to the movable box 7.

[0025] The adjustment assembly includes a lead screw 10 and a threaded block 12. The upper and lower ends of the lead screw 10 are rotatably connected to the upper block 4 and the bottom block 11, respectively. The middle part of the lead screw 10 is threadedly connected to the threaded block 12. One side of the threaded block 12 is fixedly connected to the side wall of the movable box 7.

[0026] More specifically, when it is necessary to control the lifting and lowering of the movable box 7, the operator only needs to turn the lead screw 10. The rotation of the lead screw 10 can forcibly push the threaded block 12 to lift and lower. While the threaded block 12 is lifting and lowering, the movable box 7 can slide on the surface of the four columns 5 with the four movable blocks 9, thereby stabilizing the lifting and lowering of the movable box 7.

[0027] As a preferred embodiment of this utility model, a rotating ring 14 is fixedly connected to the outer wall of the lower end of the lead screw 10, and a plurality of insertion holes 15 are provided on the side wall of the rotating ring 14.

[0028] More specifically, by setting a rotating ring 14 and providing an insertion hole 15 on the surface of the rotating ring 14, a tool connection point can be provided for the operator. When in use, the operator can insert a long metal rod into the insertion hole 15 to rotate the rotating ring 14. This can avoid situations where the moving box 7 or the liquid material is too heavy to be rotated manually and cannot exert force when a tool is needed.

[0029] As a preferred embodiment of this utility model, the number of movable box 7, lead screw 10 and threaded block 12 is not less than two, and the two lead screws 10 and threaded blocks 12 have different pitches. The lower ends of the two lead screws 10 pass through the bottom block 11 and are connected to the transmission component together.

[0030] More specifically, by setting multiple (such as) movable box 7, lead screw 10 and threaded block 12. Figure 2 and Figure 3 As shown), multiple layers of material can be freeze-dried at once, and the adjacent two layers of movable boxes 7 can use the same sealing ring 18 and sealing groove structure. Only the top of the uppermost movable box 7 needs to have a position for installing the sealing plate. Furthermore, by setting a transmission assembly, all lead screws 10 can be rotated at once without individual rotation, resulting in higher efficiency. By setting different pitches for several lead screws 10, multiple moving boxes 7 can be controlled to move at different lifting speeds when rotating the rotating ring 14.

[0031] As a preferred embodiment of the present invention, the transmission assembly includes a synchronous belt 17 and two synchronous pulleys 16. The two synchronous pulleys 16 are respectively sleeved and fixedly connected to the outer wall of the lower end of the two lead screws 10, and the synchronous belt 17 is sleeved and slidably connected to the outside of the two synchronous pulleys 16.

[0032] More specifically, when the rotating ring 14 is rotated, the rotating ring 14 causes the connected first lead screw 10 to rotate, and then the synchronous pulley 16 connected to the lower end of the first lead screw 10 drives the synchronous pulley 16 at the lower end of the other lead screw 10 to rotate through the synchronous belt 17, thereby ensuring that the two lead screws 10 rotate together.

[0033] As a preferred embodiment of this utility model, a storage box 13 is fixedly connected to the bottom surface of the bottom block 11, which is sleeved on the outside of the synchronous belt 17 and the two synchronous pulleys 16.

[0034] More specifically, by setting up the storage box 13, the timing belt 17 and the two timing pulleys 16 can be concealed within it, reducing the probability of damage and also making it more aesthetically pleasing.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-freezing machine for producing freeze-dried powder, comprising a freeze-drying machine housing (1), a door (2) installed on the front side of the freeze-drying machine housing (1), and four uprights (5) located inside the freeze-drying machine housing (1), each equipped with a caster wheel, characterized in that: The outer walls of the lower ends of the four columns (5) are fitted with and fixedly connected to a fixing block (8). The four fixing blocks (8) are simultaneously fixedly connected to a bottom box (6). The upper surface of the bottom box (6) is fixedly connected to a sealing ring (18). The outer walls of the four columns (5) are also fitted with and slidably connected to a moving block (9). The four moving blocks (9) are simultaneously fixedly connected to a moving box (7). The bottom surface of the moving box (7) is provided with a sealing groove that matches and slidably connects to the sealing ring (18). The side of the bottom box (6) near the door (2) is connected to a lifting assembly. The other end of the lifting assembly is connected to the moving box (7).

2. A quick-freezing machine for producing freeze-dried powder according to claim 1, characterized in that: The upper ends of the four columns (5) are simultaneously fixedly connected to a frame (3), and the side of the frame (3) near the door (2) is connected to the lifting assembly.

3. A quick-freezing machine for producing freeze-dried powder according to claim 2, characterized in that: The lifting assembly includes an upper block (4), a bottom block (11), and an adjustment assembly. The side of the frame (3) near the door (2) is fixedly connected to the side of the upper block (4). The side of the bottom box (6) near the door (2) is fixedly connected to the side of the bottom block (11). The upper and lower ends of the adjustment assembly are connected to the upper block (4) and the bottom block (11) respectively. The middle part of the adjustment assembly is connected to the moving box (7).

4. A quick-freezing machine for producing freeze-dried powder according to claim 3, characterized in that: The adjustment assembly includes a lead screw (10) and a threaded block (12). The upper and lower ends of the lead screw (10) are rotatably connected to the upper block (4) and the lower block (11) respectively. The middle part of the lead screw (10) is threadedly connected to the threaded block (12). One side of the threaded block (12) is fixedly connected to the side wall of the movable box (7).

5. A quick-freezing machine for producing freeze-dried powder according to claim 4, characterized in that: A rotating ring (14) is fixedly connected to the outer wall of the lower end of the lead screw (10), and the side wall of the rotating ring (14) is provided with several insertion holes (15).

6. A quick-freezing machine for producing freeze-dried powder according to claim 5, characterized in that: The number of the movable box (7), lead screw (10) and threaded block (12) is not less than two, and the two lead screws (10) and threaded blocks (12) have different pitches. The lower ends of the two lead screws (10) pass through the bottom block (11) and are connected to the transmission assembly.

7. A quick-freezing machine for producing freeze-dried powder according to claim 6, characterized in that: The transmission assembly includes a timing belt (17) and two timing pulleys (16). The two timing pulleys (16) are respectively sleeved and fixedly connected to the outer wall of the lower end of the two lead screws (10). The timing belt (17) is sleeved and slidably connected to the outside of the two timing pulleys (16).

8. A quick-freezing machine for producing freeze-dried powder according to claim 7, characterized in that: The bottom surface of the base block (11) is fixedly connected to a storage box (13) that is sleeved on the outside of the timing belt (17) and two timing pulleys (16).

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