A drying apparatus for lyophilized powder preparation

Abstract

The utility model relates to the technical field of freeze drying, and disclose a kind of drying device for freeze-dried powder preparation, including dryer, drying storehouse is equipped in dryer, the bottom of drying storehouse is connected with bottom disc, the top of bottom disc is connected with surrounding block component, the top of surrounding block component is equipped with limit plate, the side of limit plate away from bottom disc is connected with lifting assembly, and the inner wall of drying storehouse is connected with lifting assembly.The kind of drying device for freeze-dried powder preparation, material is positioned on the top of bottom disc by setting surrounding block component, and limit plate is gently contacted with the top of material using lifting assembly, can form effective positioning and support to material in freeze-drying process;With the gradual sublimation of ice crystal inside material, the structure avoids to exert too large pressure on porous fragile structure, to effectively protect the morphological integrity of material, improve the stability of freeze-drying process and final product quality.

Description

Technical Field

[0001] This utility model relates to the field of freeze-drying technology, specifically a drying device for preparing freeze-dried powder. Background Technology

[0002] Freeze-drying is a drying technology based on the principle of sublimation. The process involves rapidly freezing the material to be dried at a low temperature, followed by sublimation of the frozen water from solid ice into water vapor under a suitable vacuum environment, thus removing the water. This process is called freeze-drying, and the resulting product is called freeze-dried material. Materials treated with vacuum freeze-drying retain their physical, chemical, and biological properties largely unchanged, forming a porous and loose internal structure with excellent solubility and rapid rehydration. Therefore, freeze-drying technology is widely used in various fields such as bioengineering, pharmaceuticals, and food processing.

[0003] Patent CN218495632U discloses a freeze dryer, comprising: a body; a drying chamber disposed within the body; a cold trap disposed within the body for freezing materials; and a refrigeration system disposed within the body and connected to the cold trap for cooling items within the cold trap. The space containing the drying chamber is connected to the space containing the refrigeration system, allowing hot air generated by the refrigeration system to flow to the drying chamber for heating. This design fully utilizes the exhaust heat from the refrigeration compressor in the refrigeration system to heat the drying chamber, eliminating the need for an external heating device, thus reducing the cost and energy consumption of the freeze dryer.

[0004] However, the freeze dryer in the above technology still has the following problems: In the existing freeze-dried powder drying equipment, the material is usually supported and fixed by a pressure screen and a chassis. During the drying process, as the ice crystals inside the material gradually evaporate, a porous structure will gradually form, which will reduce the strength of the material. At this time, the pressure screen may collapse the porous material that has not yet been fully shaped due to the pressure applied, thereby affecting the structural integrity and quality of the final product. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a drying device for preparing freeze-dried powder, which improves the stability of materials during the freeze-drying process.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drying device for preparing freeze-dried powder, comprising a dryer, a drying chamber inside the dryer, a chassis connected to the bottom of the drying chamber, a baffle assembly connected above the chassis, a limiting plate on the top of the baffle assembly, a lifting assembly connected to the side of the limiting plate away from the chassis, and the lifting assembly connected to the inner wall of the drying chamber.

[0007] Furthermore, the lifting assembly includes an L-shaped lifting rod and a telescopic component. One end of the L-shaped lifting rod is fixedly connected to the side of the limiting plate away from the chassis. A support plate is fixedly connected to one side of the chassis. The telescopic component is fixedly connected to the support plate. The telescopic end of the telescopic component extends upward and is fixedly connected to the end of the L-shaped lifting rod away from the limiting plate.

[0008] Furthermore, a pressure pad is fixedly connected to the side of the limiting plate near the chassis.

[0009] Furthermore, the enclosure assembly includes four support columns, which are respectively connected to the four corners of the chassis. Several elastic support ropes are connected between each pair of adjacent support columns, and soft pad strips are fixedly connected to the side of each of the four support columns closest to the center of the chassis.

[0010] Furthermore, cross grooves are provided at the four corners of the upper surface of the chassis, and electric push rods are embedded on the adjacent side of the four cross grooves. Cross sliders are slidably connected in the four cross grooves. The four cross sliders are fixedly connected to the bottom of the four support columns, and the telescopic ends of the four electric push rods are fixedly connected to the four cross sliders.

[0011] Furthermore, the top of the support column is provided with an insertion hole, and several symmetrically arranged connecting holes are provided on the side of the support column near the soft pad strip. The connecting holes are located on both sides of the soft pad strip. The end of the elastic support rope is inserted into the insertion hole through the connecting hole, and a plug rod is slidably connected in the insertion hole.

[0012] Furthermore, the side wall of the insertion rod is provided with several symmetrically arranged misaligned holes, which are matched with several connecting holes. The end of the support column away from the cross slider is fixedly connected to an internal threaded ring, and the internal threaded ring is internally threaded to an external threaded block, which is fixedly connected to the end of the insertion rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This drying device for preparing freeze-dried powder uses a baffle assembly to limit the material above the chassis, and a lifting assembly to gently contact the top of the material with the limiting plate. This effectively positions and supports the material during the freeze-drying process. As the ice crystals inside the material gradually evaporate, excessive pressure is avoided on the porous and fragile structure, thus effectively protecting the morphological integrity of the material and improving the stability of the freeze-drying process and the quality of the final product. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall connection structure of this utility model; Figure 2 This is an exploded view of the connection structure between the chassis and the enclosure assembly of this utility model; Figure 3 This is a schematic diagram of the connection structure between the support column and the elastic support rope of this utility model; Figure 4 This is an exploded view of the connection structure between the support column and the insertion rod of this utility model.

[0015] In the diagram: 1. Dryer; 2. Chassis; 3. Enclosure assembly; 4. Limiting plate; 5. Lifting assembly; 21. Support plate; 22. Electric actuator; 23. Cross slider; 31. Support column; 32. Elastic support rope; 33. Soft pad strip; 34. Insert rod; 35. Internal threaded ring; 36. External threaded block; 41. Pressing soft pad; 51. L-shaped lifting rod; 52. Telescopic component; 101. Drying chamber; 201. Cross slide groove; 301. Insertion hole; 302. Connection hole; 303. Misalignment hole. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1 to 4 A drying apparatus for preparing freeze-dried powder includes a dryer 1, a drying chamber 101 inside the dryer 1, a base plate 2 connected to the bottom of the drying chamber 101, a baffle assembly 3 connected to the top of the base plate 2, a limiting plate 4 provided at the top of the baffle assembly 3, and a lifting assembly 5 connected to the side of the limiting plate 4 away from the base plate 2, and the lifting assembly 5 connected to the inner wall of the drying chamber 101.

[0018] like Figures 1 to 4 As shown, the drying device for preparing freeze-dried powder in this utility model is structurally similar to existing drying devices, such as the freeze dryer disclosed in patent publication number CN218495632U. The main improvement of this utility model is that users can save on the amount of lubricating oil added to the drying device for preparing freeze-dried powder. Figures 1 to 4 As shown, in the freeze-drying device for preparing freeze-dried powder of this utility model, the material to be processed is placed inside the enclosure component 3 of the chassis 2. The lifting component 5 drives the limiting plate 4 to gently contact the top of the material. The enclosure component 3 and the limiting plate 4 work together to achieve effective positioning and support of the material during the freeze-drying process. As the ice crystals inside the material gradually sublimate, a porous structure is gradually formed. This support structure can avoid applying excessive pressure and effectively protect the morphological integrity of the material, thereby improving the stability of the freeze-drying process and the quality of the final product.

[0019] like Figure 1 and Figure 2As shown, the lifting assembly 5 includes an L-shaped lifting rod 51 and a telescopic member 52. One end of the L-shaped lifting rod 51 is fixedly connected to the side of the limiting plate 4 away from the chassis 2. A support plate 21 is fixedly connected to one side of the chassis 2. The telescopic member 52 is fixedly connected to the support plate 21. The telescopic end of the telescopic member 52 extends upward and is fixedly connected to the end of the L-shaped lifting rod 51 away from the limiting plate 4. The support plate 21 is used to support and fix the telescopic member 52. The telescopic member 52 controls the L-shaped lifting rod 51 to move up and down, thereby driving the limiting plate 4 to move up and down inside and at the top of the enclosure assembly 3, thus adapting to material positioning support at different heights. The telescopic member 52 can be an electric telescopic rod, a cylinder, or a hydraulic cylinder. Since the temperature inside the drying chamber 101 is low, an electric telescopic rod can be selected to improve the stability of the lifting operation at low temperatures.

[0020] like Figure 1 As shown, a pressure pad 41 is fixedly connected to the side of the limiting plate 4 near the chassis 2. The bottom of the limiting plate 4 contacts the top of the material through the pressure pad 41, which can further reduce the squeezing and wear on the top of the freeze-dried material and further reduce the damage force on the positioning support of the top of the material.

[0021] like Figures 1 to 4 As shown, the enclosure assembly 3 includes four support columns 31, which are connected to the four corners of the chassis 2. Several elastic support ropes 32 are connected between adjacent support columns 31. A soft pad strip 33 is fixedly connected to the side of each support column 31 closest to the center of the chassis 2. The four support columns 31, together with the elastic support ropes 32, form an enclosure on the chassis 2. The elastic support ropes 32 contact the edge of the freeze-dried material, providing a gentler contact and improving the support effect. Simultaneously, the soft pad strip 33 on the side of the four support columns 31 closest to the material reduces stress and wear on the material surface.

[0022] like Figures 1 to 4As shown, each of the four corners of the upper surface of the chassis 2 has a cross-shaped sliding groove 201. An electric actuator 22 is embedded in each adjacent side of the four cross-shaped sliding grooves 201. A cross-shaped slider 23 is slidably connected within each of the four cross-shaped sliding grooves 201. The four cross-shaped sliders 23 are fixedly connected to the bottom of each of the four support columns 31. The telescopic ends of the four electric actuators 22 are fixedly connected to the four cross-shaped sliders 23. The four electric actuators 22 move synchronously, pushing the cross-shaped sliders 23 to slide within the cross-shaped sliding grooves 201. This allows the four support columns 31 to move synchronously closer to or further away from the center of the chassis 2, changing the enclosure area of ​​the enclosure component 3 and adapting to the limiting operation of freeze-dried materials of different widths or diameters. The elastic support rope 32 is made of a low-temperature resistant elastic shrinkage material. When the four support columns 31 approach each other, the elastic support rope 32 gradually contracts, preventing it from becoming loose and improving its support effect on the material. The elastic support rope 32 can be made of thermoplastic polyurethane elastomer (TPU), silicone rubber, polyolefin elastomer (such as POE), or cross-linked polyolefin (such as POF shrink film).

[0023] like Figures 1 to 4 As shown, the top of the support column 31 has an insertion hole 301, and the side of the support column 31 near the soft pad strip 33 has several symmetrically arranged connecting holes 302, which are located on both sides of the soft pad strip 33. The end of the elastic support rope 32 is inserted into the insertion hole 301 through the connecting hole 302, and the insertion rod 34 is slidably connected in the insertion hole 301. The end of the elastic support rope 32 is inserted into the connecting hole 302 on one side of the support column 31, and then the insertion rod 34 is inserted into the insertion hole 301 at the top of the support column 31. The insertion rod 34 is used to press the end of the elastic support rope 32 into the inside of the insertion hole 301, thus completing the installation and fixation between the elastic support rope 32 and the support column 31. The other end of the elastic support rope 32 is connected and installed to the corresponding connection hole 302 of another support column 31 in the same way.

[0024] like Figures 1 to 4As shown, the side wall of the insertion rod 34 has several symmetrically arranged misaligned holes 303, which are matched with several connecting holes 302. The end of the support column 31 away from the cross slider 23 is fixedly connected to an internal threaded ring 35. The internal threaded ring 35 is internally threaded to an external threaded block 36, which is fixedly connected to the end of the insertion rod 34. When installing the elastic support rope 32, the insertion rod 34 can be inserted into the insertion hole 301 first, and the end of the elastic support rope 32 can be inserted from the connecting hole 302 into the misaligned hole 303 at the corresponding position of the insertion rod 34. Then, the top external threaded block 36 is rotated and gradually screwed into the internal threaded ring 35. This misaligns and squeezes the end of the elastic support rope 32 into the inside of the insertion hole 301, while ensuring that the insertion rod 34 does not easily move out of or inward from the insertion hole 301, thus improving the fixing effect on the end of the elastic support rope 32.

[0025] It should be noted that, for example Figure 3 As shown, during installation, the two rows of multiple elastic support ropes 32 on a single support column 31 are all inserted into the corresponding connecting holes 302 and the misaligned holes 303 of the insert rod 34. Then, the external thread block 36 is rotated to simultaneously squeeze and fix the ends of the multiple elastic support ropes 32 into the insert holes 301, thus completing the installation and fixation of the support column 31 and the multiple elastic support ropes 32.

[0026] 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.

Claims

1. A drying apparatus for preparing freeze-dried powder, comprising a dryer (1), characterized in that: The dryer (1) is provided with a drying chamber (101), the bottom of the drying chamber (101) is connected to a chassis (2), the top of the chassis (2) is connected to a baffle assembly (3), the top of the baffle assembly (3) is provided with a limiting plate (4), the side of the limiting plate (4) away from the chassis (2) is connected to a lifting assembly (5), and the lifting assembly (5) is connected to the inner wall of the drying chamber (101).

2. The drying apparatus for preparing freeze-dried powder according to claim 1, characterized in that: The lifting assembly (5) includes an L-shaped lifting rod (51) and a telescopic component (52). One end of the L-shaped lifting rod (51) is fixedly connected to the side of the limiting plate (4) away from the chassis (2). A support plate (21) is fixedly connected to one side of the chassis (2). The telescopic component (52) is fixedly connected to the support plate (21). The telescopic end of the telescopic component (52) extends upward and is fixedly connected to the end of the L-shaped lifting rod (51) away from the limiting plate (4).

3. The drying apparatus for preparing freeze-dried powder according to claim 1, characterized in that: The limiting plate (4) is fixedly connected to a pressure pad (41) on the side near the chassis (2).

4. The drying apparatus for preparing freeze-dried powder according to claim 1, characterized in that: The enclosure assembly (3) includes four support columns (31), which are connected to the four corners of the chassis (2) respectively. Several elastic support ropes (32) are connected between adjacent support columns (31), and soft pad strips (33) are fixedly connected to the side of the four support columns (31) near the center of the chassis (2).

5. The drying apparatus for preparing freeze-dried powder according to claim 4, characterized in that: The four corners of the upper surface of the chassis (2) are provided with cross grooves (201). Electric push rods (22) are embedded on the adjacent side of the four cross grooves (201). Cross sliders (23) are slidably connected in the four cross grooves (201). The four cross sliders (23) are fixedly connected to the bottom of the four support columns (31) respectively. The telescopic ends of the four electric push rods (22) are fixedly connected to the four cross sliders (23) respectively.

6. The drying apparatus for preparing freeze-dried powder according to claim 4, characterized in that: The top of the support column (31) is provided with an insertion hole (301). The support column (31) is provided with a number of symmetrically arranged connecting holes (302) on the side near the soft pad strip (33). The connecting holes (302) are located on both sides of the soft pad strip (33). The end of the elastic support rope (32) is inserted into the insertion hole (301) through the connecting hole (302). The insertion rod (34) is slidably connected in the insertion hole (301).

7. The drying apparatus for preparing freeze-dried powder according to claim 6, characterized in that: The side wall of the insertion rod (34) is provided with a number of symmetrically arranged misaligned holes (303), and the number of misaligned holes (303) are matched with a number of connecting holes (302). The end of the support column (31) away from the cross slider (23) is fixedly connected to an internal threaded ring (35), and the internal threaded ring (35) is internally threaded to an external threaded block (36). The external threaded block (36) is fixedly connected to the end of the insertion rod (34).

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