A SOD solution freeze dryer

Abstract

The utility model relates to the technical field of freeze drier, disclose a kind of SOD solution freeze drier, the air inlet end of vacuum pump is fixedly connected with pipeline, the top of machine body is equipped with drying rack, pre-freezing frame and sealing mechanism, sealing mechanism includes glass cover, support plate, threaded head and sealer, the bottom of glass cover is fixedly connected with support plate, the bottom of support plate is fixedly connected with threaded head, and the bottom edge of support plate is equipped with sealer.Threaded head can form the compact pressing effect to first sealing ring and second sealing ring after screwing, so that first sealing ring and second sealing ring can play the role of double-layer sealing, significantly improve the sealing performance between glass cover and cold trap, prevent external air from entering cold trap during pre-freezing stage and drying stage, resulting in freeze-drying effect not up to standard, the design of clamping block and clamping groove facilitates the disassembly of first sealing ring and second sealing ring by staff, and facilitates the regular maintenance of first sealing ring and second sealing ring.

Description

Technical Field

[0001] This utility model relates to the field of freeze dryer technology, specifically a freeze dryer for SOD solution. Background Technology

[0002] Freeze-drying technology is widely used in fields such as biopharmaceuticals, pharmaceuticals, and food. It involves freezing a solution at low temperatures and then sublimating it in a vacuum environment to remove moisture, thereby preserving the active ingredients and structure of the substance. As an active substance that is sensitive to temperature and environment, the freeze-drying process of superoxide dismutase (SOD) solution has particularly strict requirements for the sealing and stability of the equipment.

[0003] Traditional freeze dryers typically use a design where the glass cover is directly fastened to the top of the cold trap, relying on a simple sealing ring or gravity pressure to achieve a seal. However, this direct fastening method is difficult to completely isolate external air, especially during long-term operation or in a vacuum environment, which can easily lead to air infiltration and affect the freeze-drying effect. Utility Model Content

[0004] The purpose of this invention is to provide an SOD solution freeze dryer in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an SOD solution freeze dryer, comprising a body, a cold trap fixedly embedded in the top of the body, a heating plate fixedly installed on the bottom surface of the cold trap, a drain outlet fixedly embedded in the side wall of the body, and a refrigeration unit fixedly connected to the inner wall of the body, the refrigeration unit and the cold trap being connected in communication, a vacuum pump installed on one side of the body, the air inlet end of the vacuum pump being fixedly connected to a pipe, a drying rack, a pre-freezing rack and a sealing mechanism installed on the top of the body, the sealing mechanism comprising a glass cover, a support plate, a threaded head and a sealer, a support plate fixedly connected to the bottom of the glass cover, a threaded head fixedly connected to the bottom of the support plate, and a sealer installed on the bottom edge of the support plate.

[0006] As a further embodiment of this utility model: the sealer includes a first sealing ring, a second sealing ring, a sealing plate, and a locking block. The second sealing ring is installed inside the first sealing ring. Multiple sets of sealing plates are fixed between the first sealing ring and the second sealing ring. Multiple sets of locking blocks are circumferentially fixed to the top of both the first sealing ring and the second sealing ring.

[0007] As a further improvement of this utility model: the thickness of the first sealing ring, the second sealing ring, and the sealing piece are all equal; the diameter of the second sealing ring is larger than the inner diameter of the cold trap; and the inner diameters of the glass cover, the threaded head, and the cold trap are all equal.

[0008] As a further embodiment of this utility model: the bottom of the support plate is provided with multiple sets of slots in a ring shape, the slots and the blocks are adapted to each other, the first sealing ring and the support plate are fixed by the slots and the blocks, and the second sealing ring and the support plate are fixed by the slots and the blocks.

[0009] As a further improvement of this utility model: the inner wall of the cold trap is provided with a threaded groove that is compatible with the threaded head, the diameters of the drying rack and the pre-freezing rack are equal, and the diameters of the drying rack and the pre-freezing rack are both smaller than the inner diameter of the cold trap.

[0010] As a further improvement of this utility model: the bottom of the cold trap is fixedly connected to a connecting pipe, one end of the connecting pipe is fixedly connected to a drain outlet, and one end of the pipe penetrates the side wall of the machine body and is fixedly connected to the cold trap.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The combined use of the threaded head and threaded groove increases the tightness of the connection between the glass cover and the cold trap, preventing accidental separation of the glass cover from the cold trap by personnel, which would affect the freeze-drying effect. Moreover, after the threaded head is tightened, it can form a tight compression effect on the first and second sealing rings, so that the first and second sealing rings can play a double-layer sealing role, significantly improving the sealing performance between the glass cover and the cold trap. This prevents external air from entering the cold trap during the pre-freezing and drying stages, which would cause the freeze-drying effect to be substandard. Furthermore, the sealing plate can form multiple sealed chambers between the first and second sealing rings, which can firmly lock in moisture and prevent the first and second sealing rings from separating, thus improving the overall sealing effect. The design of the locking block and the locking groove makes it easy for personnel to disassemble and assemble the first and second sealing rings, facilitating regular maintenance of the first and second sealing rings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an SOD solution freeze dryer according to the present invention;

[0014] Figure 2 This is a cross-sectional view of an SOD solution freeze dryer according to the present invention;

[0015] Figure 3 This is a schematic diagram of the sealing mechanism in an SOD solution freeze dryer according to the present invention;

[0016] Figure 4 This is a schematic diagram of the slot structure in an SOD solution freeze dryer according to the present invention;

[0017] Figure 5 This is a schematic diagram of the seal in a freeze dryer for SOD solution according to the present invention.

[0018] In the diagram: 1. Body; 11. Cold trap; 12. Heating plate; 13. Drain outlet; 14. Refrigeration unit; 2. Vacuum pump; 21. Pipeline; 3. Drying rack; 4. Pre-freezing rack; 5. Sealing mechanism; 51. Glass cover; 52. Support plate; 521. Slot; 53. Threaded head; 54. Sealer; 541. First sealing ring; 542. Second sealing ring; 543. Sealing plate; 544. Locking block. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-5 In this embodiment of the present invention, an SOD solution freeze dryer includes a body 1, a cold trap 11 fixedly embedded in the top of the body 1, a heating plate 12 fixedly installed on the inner bottom surface of the cold trap 11, a drain outlet 13 fixedly embedded in the side wall of the body 1, and a refrigerator 14 fixedly connected to the inner wall of the body 1, the refrigerator 14 and the cold trap 11 being connected in communication, a vacuum pump 2 installed on one side of the body 1, the air inlet end of the vacuum pump 2 being fixedly connected to a pipe 21, a drying rack 3, a pre-freezing rack 4 and a sealing mechanism 5 installed on the top of the body 1, the sealing mechanism 5 including a glass cover 51, a support plate 52, a threaded head 53 and a sealer 54, the support plate 52 being fixedly connected to the bottom of the glass cover 51, the threaded head 53 being fixedly connected to the bottom of the support plate 52, and the sealer 54 being installed on the bottom edge of the support plate 52.

[0021] Furthermore, the sealer 54 includes a first sealing ring 541, a second sealing ring 542, a sealing plate 543, and a locking block 544. The second sealing ring 542 is installed inside the first sealing ring 541. Multiple sets of sealing plates 543 are fixed between the first sealing ring 541 and the second sealing ring 542. Multiple sets of locking blocks 544 are circumferentially fixed to the top of both the first sealing ring 541 and the second sealing ring 542. Through the combined design of the first sealing ring 541, the second sealing ring 542, and the sealing plate 543, multiple sealed chambers are formed, which significantly improves the sealing effect, prevents external air from entering the cold trap 11, and ensures the airtightness of the freeze-drying process.

[0022] Furthermore, the thicknesses of the first sealing ring 541, the second sealing ring 542, and the sealing piece 543 are all equal, the diameter of the second sealing ring 542 is larger than the inner diameter of the cold trap 11, and the inner diameters of the glass cover 51, the threaded head 53, and the cold trap 11 are all equal, ensuring that the second sealing ring 542 can fit tightly against the top of the body 1, thereby enhancing the sealing performance.

[0023] Furthermore, the bottom of the support plate 52 is provided with multiple sets of slots 521. The locking block 544 is adapted to the slots 521. The first sealing ring 541 and the support plate 52 are engaged and fixed by the locking block 544 and the slots 521. The second sealing ring 542 and the support plate 52 are engaged and fixed by the locking block 544 and the slots 521. The fixing method of the locking block 544 and the slots 521 allows the first sealing ring 541 and the second sealing ring 542 to be quickly installed or removed, which is convenient for regular maintenance or replacement of corresponding parts. At the same time, it ensures the connection between the first sealing ring 541 and the support plate 52 and the connection between the second sealing ring 542 and the support plate 52.

[0024] Furthermore, the inner wall of the cold trap 11 is provided with a threaded groove that matches the threaded head 53. The threaded connection enhances the tightness between the glass cover 51 and the cold trap 11, preventing accidental contact that could lead to separation and further improving the operational safety of the equipment. The drying rack 3 and the pre-freezing rack 4 have the same diameter, and the diameters of the drying rack 3 and the pre-freezing rack 4 are both smaller than the inner diameter of the cold trap 11, ensuring that the drying rack 3 and the pre-freezing rack 4 can be smoothly placed into the cold trap 11, avoiding operational difficulties or equipment damage due to size mismatch.

[0025] Furthermore, a connecting pipe is fixedly connected to the bottom of the cold trap 11. One end of the connecting pipe is fixedly connected to the drain outlet 13. One end of the pipe 21 penetrates the side wall of the body 1 and is fixedly connected to the cold trap 11. The drain outlet 13 facilitates the discharge of condensate. The pipe 21 ensures that the vacuum pump 2 can effectively extract air from the cold trap 11, maintain the vacuum environment required for drying, and improve the freeze-drying efficiency.

[0026] Working principle: When using this device, first place the SOD solution on the pre-freezing rack 4, then place the pre-freezing rack 4 into the cold trap 11, and tighten the threaded head 53 into the cold trap 11. Start the refrigerator 14 to cool the inside of the cold trap 11, so that the solution freezes rapidly in a low-temperature environment. After freezing, transfer the solid raw material on the pre-freezing rack 4 to the drying rack 3, and place the pre-freezing rack 4 into the cold trap 11. Then place the drying rack 3 on top of the pre-freezing rack 4, and tighten the threaded head 53 into the cold trap 11. At this time, the drying stage begins. The glass cover 51 is tightened and fixed to the top of the cold trap 11 by the threaded groove of the threaded head 53 and the inner wall of the cold trap 11. During this process, the seal 54 at the bottom of the support plate 52 is tightly fitted to the top of the body 1. The first sealing ring 541 and the second sealing ring 542 are connected to the support plate 52 by the locking block 544. The groove 521 is engaged and fixed to form a double-layer sealing structure. The sealing piece 543 forms multiple sealing chambers between the first sealing ring 541 and the second sealing ring 542, further enhancing the sealing effect and preventing external air from seeping in. Then, the vacuum pump 2 is started to extract the air from the cold trap 11 through the pipe 21 to form a vacuum environment. Under vacuum, the heating plate 12 heats the frozen SOD solution, causing the ice crystals to sublimate directly into water vapor. The water vapor condenses into ice on the inner wall of the cold trap 11 and is then discharged through the connecting pipe and the drain port 13. Throughout the process, the tight fit between the threaded head 53 and the threaded groove ensures the stability of the glass cover 51, while the multiple sealing design of the sealer 54 effectively isolates external air and ensures the freeze-drying effect. After drying, the vacuum pump 2 and the heating plate 12 are turned off, the glass cover 51 is unscrewed, and the dried SOD product is taken out.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A freeze dryer for SOD solution, comprising a body (1), characterized in that, A cold trap (11) is fixedly embedded in the top of the body (1). A heating plate (12) is fixedly installed on the bottom surface of the cold trap (11). A drain outlet (13) is fixedly embedded in the side wall of the body (1). A refrigerator (14) is fixedly connected to the inner wall of the body (1). The refrigerator (14) and the cold trap (11) are connected. A vacuum pump (2) is installed on one side of the body (1). A pipe (21) is fixedly connected to the air inlet end of the vacuum pump (2). A drying rack (3), a pre-freezing rack (4) and a sealing mechanism (5) are installed on the top of the body (1). The sealing mechanism (5) includes a glass cover (51), a support plate (52), a threaded head (53) and a sealer (54). A support plate (52) is fixedly connected to the bottom of the glass cover (51). A threaded head (53) is fixedly connected to the bottom of the support plate (52). A sealer (54) is installed on the bottom edge of the support plate (52).

2. The SOD solution freeze dryer according to claim 1, characterized in that, The sealer (54) includes a first sealing ring (541), a second sealing ring (542), a sealing plate (543), and a locking block (544). The second sealing ring (542) is installed on the inner side of the first sealing ring (541). Multiple sets of sealing plates (543) are fixed between the first sealing ring (541) and the second sealing ring (542). Multiple sets of locking blocks (544) are fixed in a ring at the top of both the first sealing ring (541) and the second sealing ring (542).

3. The SOD solution freeze dryer according to claim 2, characterized in that, The thicknesses of the first sealing ring (541), the second sealing ring (542), and the sealing piece (543) are all equal. The diameter of the second sealing ring (542) is greater than the inner diameter of the cold trap (11). The inner diameters of the glass cover (51), the threaded head (53), and the cold trap (11) are all equal.

4. The SOD solution freeze dryer according to claim 3, characterized in that, The bottom of the support plate (52) has multiple sets of slots (521) arranged in a ring. The slots (521) are matched with the locking block (544). The first sealing ring (541) and the support plate (52) are engaged and fixed by the locking block (544) and the slot (521). The second sealing ring (542) and the support plate (52) are engaged and fixed by the locking block (544) and the slot (521).

5. The SOD solution freeze dryer according to claim 4, characterized in that, The inner wall of the cold trap (11) is provided with a threaded groove that is compatible with the threaded head (53). The diameters of the drying rack (3) and the pre-freezing rack (4) are equal, and the diameters of the drying rack (3) and the pre-freezing rack (4) are both smaller than the inner diameter of the cold trap (11).

6. The SOD solution freeze dryer according to claim 5, characterized in that, The bottom of the cold trap (11) is fixedly connected to a connecting pipe, one end of which is fixedly connected to the drain outlet (13), and one end of the pipe (21) penetrates the side wall of the body (1) and is fixedly connected to the cold trap (11).

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