Vacuum freeze-drying device for hirudo phenanthroides freeze-dried powder

Abstract

The utility model discloses a vacuum freeze-drying device for hirudinaria manillensis freeze-dried powder, and relates to the technical field of hirudinaria manillensis freeze-drying. The machining device comprises a machining box, the machining box is composed of an upper box body and a lower box body, the upper box body is fixedly installed at the top of the lower box body, an opening is formed in one side of the upper box body, a movable door is hinged to one side of the machining box, and the movable door is used for closing the opening in one side of the upper box body. According to the leech freeze-dried powder vacuum freeze-drying device, through the innovative design of the storage assembly, the rotating assembly and the refrigerating assembly, the problems that in a traditional freeze-drying device, leeches adhere to one another, and freeze-drying is not uniform are effectively solved; the device can quickly place leeches and drive the leeches to continuously rotate, so that the leeches are uniformly cooled, and the freeze-drying efficiency and quality can be improved; meanwhile, the large-scale production requirement is met through the functions of rapid refrigeration and vacuum environment preparation; the device is reasonable in structural design and easy and convenient to operate, and preparation of the hirudo phenanthrenoides freeze-dried powder is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of freeze-drying of leeches, in particular to a vacuum freeze-drying device for freeze-dried leech powder. Background Art

[0002] Leeches (Hirudo philadelphica) are a precious traditional Chinese medicine with extremely high medicinal value. Freeze-drying is a common method used in leech processing. Through vacuum and low-temperature conditions, the water in the leeches is sublimated in the form of ice crystals, resulting in freeze-dried powder. However, traditional freeze-drying equipment still has some problems when processing leeches:

[0003] Existing freeze-drying devices often use fixed racks when placing and rotating leeches. This design is not only not conducive to uniform freeze-drying of leeches, but may also cause some leeches to be incompletely freeze-dried due to lack of access to sufficient cold air. In addition, the racks in existing devices are not convenient for placing and removing leeches, which can easily lead to long equipment downtime and is not conducive to improving production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a vacuum freeze-drying device for freeze-dried powder of leeches. In the utility model, the vacuum freeze-drying device for freeze-dried powder of leeches effectively solves the problems of leech adhesion and uneven freeze-drying in traditional freeze-drying devices through innovative placement, rotation and refrigeration component designs; the device can quickly place leeches and drive them to rotate continuously to ensure their uniform cooling, thereby improving freeze-drying efficiency and quality; at the same time, the rapid refrigeration and vacuum environment preparation functions meet the needs of large-scale production and ensure the quality of freeze-dried powder; the device has a reasonable structural design, is easy to operate, and has strong applicability, bringing significant technological progress and market application prospects to the leech processing industry and solving existing technical problems.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] A vacuum freeze-drying device for leech freeze-dried powder, comprising:

[0007] A processing box, the processing box is composed of an upper box body and a lower box body, the upper box body is fixedly installed on the top of the lower box body, one side of the upper box body is provided with an opening, and one side of the processing box is hinged with a movable door, the movable door is used to complete the closing of the opening on one side of the upper box body;

[0008] It also includes a storage component, which is used to place the Philippine cattle leeches to be processed;

[0009] It also includes a rotating assembly, which is used to complete the slow rotation of the storage assembly;

[0010] It also includes a refrigeration component, which is used to cool the interior of the upper box.

[0011] Optionally, the storage assembly includes a support tube that is sealed and rotated to pass through one side of the upper box body, and a fixed bracket is fixedly installed between the inner walls of both sides of the upper box body, and the fixed bracket is located near the opening of the upper box body. One end of the support tube rotates and passes through the fixed bracket, and the outer wall of the support tube is fixedly sleeved with two annular brackets, and the circumferential inner walls of the two annular brackets are fixedly installed with multiple rotating racks, and the multiple rotating racks located in different annular brackets correspond to each other in pairs, and the same fixed rod is fixedly connected between the two corresponding rotating racks, and the outer walls of the multiple fixed rods are rotatably sleeved with sleeves, and the outer walls of the multiple sleeves are fixedly installed with placement tubes.

[0012] Optionally, the storage assembly also includes a storage half-tube slidably arranged inside the storage tube, and two partitions are fixedly installed inside the storage half-tube, and an adjustment cavity is formed between the two partitions and the side walls of adjacent storage half-tubes, and two positioning rods are arranged inside one of the adjustment cavities, and the two positioning rods are located on the same straight line, and one end of the two positioning rods slides through the outer wall of the storage half-tube, and the outer walls of the two positioning rods are sleeved with tension springs, one end of the two tension springs are fixedly connected to the inner wall of the storage half-tube, and the other ends of the two tension springs are fixedly connected to the outer wall of the corresponding positioning rods, and the outer wall of the placement tube is provided with two positioning holes, and the two positioning holes are located on the side close to the opening of the upper box body, and the two positioning holes are engaged with the corresponding positioning rods to complete the positioning installation of the storage half-tube.

[0013] Optionally, the rotating assembly includes a reduction motor fixedly mounted on one side of the upper box body, a first synchronous wheel is rotatably mounted on one side of the upper box body, one end of the output shaft of the reduction motor is fixedly connected to the first synchronous wheel through a connecting shaft, a second synchronous wheel is fixedly sleeved on the outer wall of the support tube, the second synchronous wheel is located outside the upper box body, and the second synchronous wheel is connected to the first synchronous wheel through a synchronous belt transmission, and the reduction motor is used to drive the support tube to rotate slowly.

[0014] Optionally, the refrigeration assembly includes a liquid storage tank, a compressor, a condenser and an evaporator fixedly mounted inside the lower box body, the interior of the liquid storage tank is filled with refrigerant, and the liquid storage tank, compressor, condenser and evaporator are connected end to end in sequence through pipes for converting the refrigerant into a high-pressure liquid and vaporizing it for transportation, one side of the evaporator is fixedly connected to an air supply pipe, the other end of the air supply pipe is fixedly passed through one side of the lower box body and is fixedly connected to a rotary joint, one end of the rotating part of the rotary joint is fixedly connected to one end of the support tube, a plurality of exhaust holes are provided on the outer wall of the support tube, and the plurality of exhaust holes are all located in the upper box body for transporting the prepared refrigerant gas into the upper box body.

[0015] Optionally, the outer wall of the placement tube is provided with a plurality of first through holes, and the outer wall of the placement half-tube is provided with a plurality of second through holes, and the plurality of first through holes are matched with corresponding second through holes to ensure that the Philippine cattle leeches to be processed placed in the placement half-tube can be fully cooled and freeze-dried.

[0016] Optionally, a vacuum pump is fixedly installed on the top of the upper box body, and the air inlet end of the vacuum pump is fixedly connected to an exhaust pipe. The other end of the exhaust pipe is divided into two and fixedly passes through the top of the upper box body to prepare a vacuum environment inside the upper box body.

[0017] Optionally, two arc-shaped pieces are fixedly installed on the top of the storage half-tube, and the two arc-shaped pieces are respectively located above the two adjustment chambers. Limiting grooves are provided on the top of the two arc-shaped pieces, and limiting ridges are fixedly installed on the top inner wall of the placement tube. The two limiting grooves are slidably matched with the corresponding limiting ridges to ensure that the storage half-tube can slide into the corresponding placement tube stably and accurately.

[0018] The embodiments of the present invention have the following beneficial effects:

[0019] In the present invention, by providing a placement assembly and utilizing the cooperation of the placement half-tube and the placement tube, leeches can be quickly placed, which is beneficial to reducing the downtime of the device; at the same time, the cooperation of the limiting groove and the limiting convex strip ensures that the placement half-tube can slide stably and accurately into the corresponding placement tube, avoiding the problem of uneven freeze-drying caused by shaking; and by providing corresponding positioning rods and positioning holes, the installation and positioning effect of the placement half-tube can be ensured to be good, the operation is simple and fast, and the work efficiency is high;

[0020] In the present invention, by providing a rotating assembly, the storage assembly can be driven to rotate slowly, so that the leeches can be evenly heated and cooled during the freeze-drying process, further improving the freeze-drying effect. In addition, the storage assembly has a reasonable structural design, so that when it rotates, the opening of the storage half-tube where the leeches are placed can be kept facing upward, ensuring that the leeches are placed more stably during movement.

[0021] In the present invention, the setting of the refrigeration component enables the device to quickly and effectively cool the interior of the upper box, meeting the needs of large-scale production. At the same time, the cooperation of the refrigeration component with the rotating component and the storage component enables the device to maintain a stable low-temperature environment during the freeze-drying process, ensuring the quality of subsequent freeze-dried powder preparation;

[0022] In the utility model, by arranging a vacuum pump and an exhaust pipe, a vacuum environment is prepared inside the upper box, which provides the necessary conditions for freeze-drying of leeches; in addition, the structural design of the device is reasonable, and the various parts are tightly connected, ensuring the smooth progress of the freeze-drying process.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of a three-dimensional structure from another perspective of an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present utility model;

[0028] Figure 4 This is a schematic cross-sectional view of an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the installation structure of the support tube and the annular bracket according to one embodiment of the present utility model;

[0030] Figure 6 This is a schematic diagram of the placement tube and the storage half-tube structure of one embodiment of the present utility model;

[0031] Figure 7 This is a schematic cross-sectional view of a placement tube and a storage half-tube according to an embodiment of the present invention.

[0032] In the figure: 1. processing box; 2. upper box body; 3. lower box body; 4. movable door; 5. vacuum pump; 6. exhaust pipe; 7. air supply pipe; 8. rotary joint; 9. reduction motor; 10. first synchronous wheel; 11. second synchronous wheel; 12. fixed bracket; 13. support pipe; 14. liquid storage tank; 15. compressor; 16. condenser; 17. evaporator; 18. exhaust hole; 19. annular bracket; 20. rotating frame; 21. fixed rod; 22. sleeve; 23. placement tube; 24. first through hole; 25. storage half pipe; 26. second through hole; 27. partition; 28. adjustment chamber; 29. arc piece; 30. positioning hole; 31. limiting groove; 32. limiting convex strip; 33. positioning rod; 34. tension spring. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inner" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0036] Example 1

[0037] See also Figure 1-7 As shown, in this embodiment, a vacuum freeze-drying device is provided, which includes a processing box 1, a storage component, a rotating component and a refrigeration component.

[0038] The processing box 1 consists of an upper box body 2 and a lower box body 3. The upper box body 2 is fixedly mounted on the top of the lower box body 3. One side of the upper box body 2 is provided with an opening. A movable door 4 is hinged on one side of the processing box 1. The movable door 4 is used to close the opening on one side of the upper box body 2 to ensure good cooling and freeze-drying effect of the Philippine cattle leeches to be processed.

[0039] In this embodiment, a storage assembly is used to position the leeches to be processed. Specifically, the storage assembly includes a support tube 13 that is sealed and rotatable, extending through one side of the upper housing 2. A fixed bracket 12 is fixedly mounted between the inner walls of the upper housing 2, located near the opening of the upper housing 2. One end of the support tube 13 rotates through the fixed bracket 12. Two annular brackets 19 are fixedly mounted on the outer wall of the support tube 13. Multiple rotating brackets 20 are fixedly mounted on the inner circumference of each annular bracket 19. Each of the rotating brackets 20, located in a different annular bracket 19, corresponds to the other two, and a fixed rod 21 is fixedly connected between the corresponding rotating brackets 20. A sleeve 22 is rotatably mounted on the outer wall of each of the multiple fixed rods 21. Each of the multiple sleeves 22 has a placement tube 23 fixedly mounted on its outer wall. The rotation of the sleeve 22 on the fixed rod 21 adjusts the angle of the placement tube 23. Gravity ensures that the bottom of the placement tube 23 remains pointed downward, ensuring stable placement of the leeches to be processed.

[0040] Furthermore, the storage assembly also includes a storage half-tube 25 that is slidably mounted within the storage tube 23. Two partitions 27 are fixedly mounted within the storage half-tube 25, and an adjustment cavity 28 is formed between the two partitions 27 and the side walls of the adjacent storage half-tube 25. Two positioning rods 33 are disposed within one of the adjustment cavities 28. The two positioning rods 33 are located on the same straight line, and one end of each positioning rod 33 slides through the outer wall of the storage half-tube 25. The outer walls of the two positioning rods 33 are each sleeved with a tension spring 34. One end of each tension spring 34 is fixedly connected to the inner wall of the storage half-tube 25, and the other end of each tension spring 34 is fixedly connected to the outer wall of the corresponding positioning rod 33. The outer wall of the storage tube 23 is provided with two positioning holes 30. The two positioning holes 30 are located on the side close to the opening of the upper box body 2. The two positioning holes 30 engage with the corresponding positioning rod 33 to complete the positioning and installation of the storage half-tube 25. When the leech needs to be taken out or put in, the positioning rod 33 can be pressed to disengage it from the positioning hole 30 , and then the placement half-tube 25 can be slid to conveniently take the placement half-tube 25 out of or put into the placement tube 23 .

[0041] In this embodiment, the rotating assembly is used to complete the slow rotation of the storage assembly. Specifically, the rotating assembly includes a reduction motor 9 fixedly mounted on one side of the upper box body 2. A first synchronous wheel 10 is rotatably mounted on one side of the upper box body 2, and one end of the output shaft of the reduction motor 9 is fixedly connected to the first synchronous wheel 10 through a connecting shaft. A second synchronous wheel 11 is fixedly sleeved on the outer wall of the support tube 13. The second synchronous wheel 11 is located outside the upper box body 2, and the second synchronous wheel 11 is connected to the first synchronous wheel 10 through a synchronous belt transmission. The reduction motor 9 is used to drive the support tube 13 to rotate slowly, thereby driving the leeches in the placement tube 23 and the storage half tube 25 to rotate slowly, so as to improve the freeze-drying effect.

[0042] In this embodiment, the refrigeration assembly is used to cool the interior of the upper housing 2. Specifically, the refrigeration assembly includes a liquid storage tank 14, a compressor 15, a condenser 16, and an evaporator 17 fixedly mounted inside the lower housing 3. The interior of the liquid storage tank 14 is filled with refrigerant, and the liquid storage tank 14, the compressor 15, the condenser 16, and the evaporator 17 are connected end to end in sequence through pipes for converting the refrigerant into a high-pressure liquid and vaporizing it for transportation. One side of the evaporator 17 is fixedly connected to an air supply pipe 7, and the other end of the air supply pipe 7 is fixedly passed through one side of the lower housing 3 and fixedly connected to a rotary joint 8, and one end of the rotating portion of the rotary joint 8 is fixedly connected to one end of the support tube 13. The outer wall of the support tube 13 is provided with a plurality of exhaust holes 18, all of which are located in the upper box body 2 and are used to transport the prepared refrigerant gas into the upper box body 2 to cool and freeze-dry the Philippine cattle leeches; wherein, the compressor 15, the condenser 16 and the evaporator 17 are the same as those in the patent with the announcement number CN117928190B.

[0043] In this embodiment, a vacuum pump 5 is fixedly installed on the top of the upper box body 2, and the air inlet end of the vacuum pump 5 is fixedly connected to an exhaust pipe 6. The other end of the exhaust pipe 6 is divided into two and fixedly passes through the top of the upper box body 2, which is used to prepare a vacuum environment inside the upper box body 2 to improve the freeze-drying efficiency.

[0044] The present application can be used in the field of freeze-drying technology of Philippine leeches, and can also be used in other fields applicable to the present application.

[0045] Example 2

[0046] refer to Figure 6 、 7 , based on the improvement of Example 1: a vacuum freeze-drying device for freeze-dried powder of Philippine leech, which is applied to the field of freeze-drying technology of Philippine leech;

[0047] In addition, in this embodiment, a plurality of first through holes 24 are opened on the outer wall of the placement tube 23, and a plurality of second through holes 26 are opened on the outer wall of the placement half tube 25. The plurality of first through holes 24 are matched with the corresponding second through holes 26 to ensure that the Philippine cattle leeches to be processed placed in the placement half tube 25 can be fully cooled and freeze-dried.

[0048] In this embodiment, two arc-shaped pieces 29 are fixedly installed on the top of the storage half-tube 25. The two arc-shaped pieces 29 are respectively located above the two adjustment chambers 28. The tops of the two arc-shaped pieces 29 are provided with limiting grooves 31. The top inner wall of the placement tube 23 is fixedly installed with limiting ridges 32. The two limiting grooves 31 are slidably matched with the corresponding limiting ridges 32 to ensure that the storage half-tube 25 can slide into the corresponding placement tube 23 stably and accurately.

[0049] However, as is well known to those skilled in the art, the working principles and wiring methods of the vacuum pump 5 and the reduction motor 9 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0050] The use process and working principle of the technical solution of this utility model are as follows:

[0051] During use, the user can place the leeches to be processed into the multiple storage half-tubes 25, and then the user can open the movable door 4, and then place the multiple storage half-tubes 25 into the placement tube 23 at the top in turn; specifically, when the user is placing the storage half-tube 25, the user needs to face the end of the storage half-tube 25 that is not installed with the positioning rod 33 inward, and at the same time, when installing, the limiting ridge 32 needs to be inserted into the limiting groove 31, and then the storage half-tube 25 is gradually pushed into the placement tube 23; when the two positioning rods 33 at one end of the storage half-tube 25 touch one end of the placement tube 23, the user needs to press the two positioning rods 33 to retract it into the storage half-tube 25, and the storage half-tube 25 can be stored. The locating rod 33 is prevented from affecting the installation of the placing half-tube 25; after that, until the placing half-tube 25 is completely inserted into the placing tube 23, the two locating rods 33 will be aligned with the corresponding locating holes 30. At this time, under the action of the corresponding tension spring 34, the two locating rods 33 will be stuck in the locating holes 30, completing the fixation of the placing tube 23 and the placing half-tube 25. The operation is simple and fast, and it is convenient to complete the rapid placement of the Philippine cattle leeches to be processed, which can reduce the downtime of the equipment and thus improve the processing efficiency; when the placing half-tube 25 is installed, the placing tube 23 will be under the action of gravity, in conjunction with the rotating structure of the sleeve 22 and the fixing rod 21, and can continuously remain perpendicular to the ground. Therefore, when the annular bracket 19 rotates When the refrigeration unit 25 is in motion, the storage half-tube 25 inside the storage tube 23 will not tilt, which can ensure that the leeches to be processed can be stably placed in the storage half-tube 25; then the user can close the movable door 4, and then start the reduction motor 9 and the refrigeration component at the same time. The multiple refrigeration components cooperate with each other to prepare the refrigerant into refrigeration gas, and transport it to the support tube 13, and then discharge it into the upper box body 2 through the multiple exhaust holes 18, completing the heat absorption and cooling of the upper box body 2 to achieve the cold-deficiency freeze-drying of the leeches to be processed, wherein the working principle of the multiple refrigeration components is the same as that in the patent with the announcement number CN117928190B; after starting, the reduction motor 9 can be driven by the first synchronous wheel 1 0 and the second synchronous wheel 11 drive the support tube 13 to rotate slowly, so that the two annular brackets 19 can drive the multiple placement tubes 23 to rotate slowly in the upper box body 2, which can ensure that the leeches to be processed in the multiple placement half-tubes 25 can be evenly cooled; after cooling, the refrigeration component is turned off, and then the vacuum pump 5 is started. At this time, the vacuum pump 5 can form a vacuum low-pressure environment in the upper box body 2, which can promote the evaporation of water from the frozen leeches to be processed, so as to ensure a good freeze-drying effect; after the processing is completed, the user can end the operation of the device, and then reverse the above steps to complete the rapid removal of the multiple placement half-tubes 25 for subsequent processing of the freeze-dried leeches.

[0052] It should be noted that, in the description of this specification, descriptions such as "first", "second", etc. are only used to distinguish various features and have no actual order or directional meaning, and this application is not limited to this.

[0053] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0054] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A vacuum freeze-drying device for freeze-dried powder of Philippine leech, characterized in that: include: A processing box (1), the processing box (1) is composed of an upper box body (2) and a lower box body (3), the upper box body (2) is fixedly mounted on the top of the lower box body (3), one side of the upper box body (2) is provided with an opening, and one side of the processing box (1) is hinged with a movable door (4), the movable door (4) is used to complete the sealing of the opening on one side of the upper box body (2); It also includes a storage component, which is used to place the Philippine cattle leeches to be processed; It also includes a rotating assembly, which is used to complete the slow rotation of the storage assembly; It also includes a refrigeration component, which is used to cool the interior of the upper box (2).

2. The vacuum freeze-drying device for the freeze-dried powder of Hirudo philippinarum according to claim 1, characterized in that: The storage assembly comprises a support tube (13) that is sealed and rotated through one side of the upper box body (2); a fixed bracket (12) is fixedly installed between the inner walls of both sides of the upper box body (2); the fixed bracket (12) is located at a position close to the opening of the upper box body (2); one end of the support tube (13) rotates and passes through the fixed bracket (12); the outer wall of the support tube (13) is fixedly sleeved with two annular brackets (19); the circumferential inner walls of the two annular brackets (19) are fixedly installed with multiple rotating racks (20); the multiple rotating racks (20) located in different annular brackets (19) correspond to each other in pairs, and the same fixed rod (21) is fixedly connected between the two corresponding rotating racks (20); the outer walls of the multiple fixed rods (21) are all rotatably sleeved with sleeves (22), and the outer walls of the multiple sleeves (22) are fixedly installed with placement tubes (23).

3. The vacuum freeze-drying device for the freeze-dried powder of Hirudo philippinarum according to claim 2, characterized in that: The storage assembly further comprises a storage half-tube (25) slidably arranged inside the storage tube (23), two partitions (27) are fixedly installed inside the storage half-tube (25), and an adjustment cavity (28) is formed between the two partitions (27) and the side walls of the adjacent storage half-tubes (25), and two positioning rods (33) are arranged inside one of the adjustment cavities (28), and the two positioning rods (33) are located on the same straight line, and one end of the two positioning rods (33) slides through the outer wall of the storage half-tube (25), and the two The outer wall of the positioning rod (33) is sleeved with a tension spring (34), one end of each of the two tension springs (34) is fixedly connected to the inner wall of the storage half-tube (25), and the other end of each of the two tension springs (34) is fixedly connected to the outer wall of the corresponding positioning rod (33). The outer wall of the placement tube (23) is provided with two positioning holes (30), and the two positioning holes (30) are located on the side close to the opening of the upper box body (2). The two positioning holes (30) are engaged with the corresponding positioning rod (33) to complete the positioning installation of the storage half-tube (25).

4. The vacuum freeze-drying device for the freeze-dried powder of Hirudo philadelphicae according to claim 2, characterized in that: The rotating assembly comprises a reduction motor (9) fixedly mounted on one side of the upper box body (2); a first synchronous wheel (10) is rotatably mounted on one side of the upper box body (2); one end of the output shaft of the reduction motor (9) is fixedly connected to the first synchronous wheel (10) via a connecting shaft; a second synchronous wheel (11) is fixedly sleeved on the outer wall of the support tube (13); the second synchronous wheel (11) is located outside the upper box body (2), and the second synchronous wheel (11) is connected to the first synchronous wheel (10) via a synchronous belt transmission; the reduction motor (9) is used to drive the support tube (13) to rotate slowly.

5. The vacuum freeze-drying device for the freeze-dried powder of Hirudo philadelphicae according to claim 4, characterized in that: The refrigeration assembly comprises a liquid storage tank (14), a compressor (15), a condenser (16) and an evaporator (17) fixedly mounted inside the lower box (3); the liquid storage tank (14) is filled with refrigerant; the liquid storage tank (14), the compressor (15), the condenser (16) and the evaporator (17) are connected end to end in sequence through pipelines for converting the refrigerant into a high-pressure liquid and vaporizing and transporting it; one side of the evaporator (17) is fixedly connected to an air delivery pipe (7); the other end of the air delivery pipe (7) is fixedly passed through one side of the lower box (3) and is fixedly connected to a rotary joint (8); one end of the rotating part of the rotary joint (8) is fixedly connected to one end of the support pipe (13); the outer wall of the support pipe (13) is provided with a plurality of exhaust holes (18); the plurality of exhaust holes (18) are all located in the upper box (2) and are used to transport the prepared refrigeration gas into the upper box (2).

6. The vacuum freeze-drying device for the freeze-dried powder of Hirudo philadelphicae according to claim 3, characterized in that: The outer wall of the placement tube (23) is provided with a plurality of first through holes (24), and the outer wall of the placement half tube (25) is provided with a plurality of second through holes (26). The plurality of first through holes (24) are matched with corresponding second through holes (26) to ensure that the leeches to be processed placed in the placement half tube (25) can be fully cooled and freeze-dried.

7. The vacuum freeze-drying device for the freeze-dried powder of Hirudo philadelphicae according to claim 1, characterized in that: A vacuum pump (5) is fixedly installed on the top of the upper box body (2), and an air inlet end of the vacuum pump (5) is fixedly connected to an air extraction pipe (6). The other end of the air extraction pipe (6) is divided into two and fixedly passes through the top of the upper box body (2), so as to achieve the preparation of a vacuum environment inside the upper box body (2).

8. The vacuum freeze-drying device for the freeze-dried powder of Hirudo philadelphicae according to claim 3, characterized in that: Two arc-shaped pieces (29) are fixedly installed on the top of the storage half-tube (25), and the two arc-shaped pieces (29) are respectively located above the two adjustment chambers (28). The tops of the two arc-shaped pieces (29) are each provided with a limiting groove (31). The top inner wall of the placement tube (23) is fixedly installed with a limiting convex strip (32). The two limiting grooves (31) are slidably matched with the corresponding limiting convex strip (32) to ensure that the storage half-tube (25) can slide into the corresponding placement tube (23) stably and accurately.

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