Apparatus and method for purifying siliceous spicules

Abstract

The present invention provides a siliceous spicule purification apparatus and method that achieves a high recovery rate, a low spicule breakage rate, high purity, and enables large-scale industrial production. [Solution] The freeze-drying apparatus has multiple oscillating shafts symmetrically arranged on the barrel lid, one side of each oscillating shaft is rotatably connected to the barrel lid, and the other side of each oscillating shaft is rotatably mounted on a support piece, and multiple support rods are fixedly mounted on the oscillating shafts, which are used to support sponge trays, and a collision platform is fixed on the barrel lid to support some of the support rods, and an oscillating drive assembly is provided on one side of the oscillating shaft, which is capable of driving the oscillating shaft to fall by its own weight after rotating it by a certain angle, and the support rods fall together with the oscillating shafts and then collide with the collision platform, causing all the sponge trays on the support rods to vibrate, and when freeze-drying is performed in this manner, the vibrating sponge trays invert the sponges to a certain extent.

Description

Technical Field

[0001] The present invention relates to sponge spicules, and specifically to an apparatus and method for purifying siliceous spicules.

Background Art

[0002] Modern scientific research has revealed that the bodies of sponge animals contain a special skeletal structure, and its main components are silicon dioxide or calcium carbonate. Among them, siliceous spicules are formed in the bodies of siliceous sponge animals by being catalyzed by silicatein, have diverse structures, and generally include uniaxial spicules, tetraxial spicules, triaxial spicules, and microscleres.

[0003] Through research on the mineralization mechanism and biomimetic applications of sponge spicules, it has been found that their special microscopic concentric structure and biological silicon component bring about hardness and relatively strong toughness, and have prospects for a wide range of applications. In recent years, the applications of sponge spicules in the field of biomedical materials have been increasing, and their demand has doubled, while the raw material prices have been rising day by day.

[0004] Currently, conventional methods for purifying sponge spicules are mostly alkaline treatment, oxidation, physical separation, and enzymatic decomposition. Of these, alkaline treatment is easy to operate, low-cost, suitable for large-scale production, effectively removes most organic impurities, and produces high purity. However, strong alkalis can damage the surface structure of spicules and affect their mechanical properties, requiring strict control of pH and temperature (usually 60-80°C). Otherwise, it may lead to the dissolution of spicules, and repeated washing of residual alkali with water may increase environmental protection costs. Oxidation causes less damage to siliceous spicules and is suitable for preserving the nanoscale surface pore structure. Hydrogen peroxide can also sterilize simultaneously, reducing post-processing steps. However, oxidation is incomplete and usually needs to be combined with alkaline treatment or ultrasonic assistance. NaClO can cause chlorine residue, potentially affecting product safety. Physical separation methods do not use chemical reagents and are suitable for products with moderate purity requirements. They can preserve the natural surface properties of spicules (such as porous structure), but the purity is low (60-80%), the separation process needs to be repeated many times, and there is a high requirement for uniformity of spicule size, otherwise efficiency decreases. Enzymatic hydrolysis methods have milder conditions (pH 7-8, 37-50°C), preserve the complete structure of spicules, have high specificity, avoid chemical residues, and are suitable for medical-grade high-purity requirements. However, the enzymes are expensive, the reaction time is long (24-72 hours), multiple enzymes (such as protease + lipase) are required to completely remove impurities, the process is complex, enzyme proteins may remain, and subsequent inactivation treatment is necessary.

[0005] Therefore, providing technologies that facilitate industrial production without destroying the morphology of sponge spicules, while simultaneously significantly improving the recovery rate and purity of spicules, is a challenge that researchers must address urgently. [Overview of the project]

[0006] The object of the present invention is to provide an apparatus and method for purifying siliceous spicules in order to solve the above problems.

[0007] The above technical objectives of the present invention are achieved by the following technical solutions. A method for purifying siliceous spicules, including the following steps. Step 1: Untreated sponge raw material is immersed in clean water, stirred, allowed to settle, then filtered to remove mud and sand, centrifuged, freeze-dried using a freeze-drying apparatus, and then crushed to obtain sponge powder. Step 2: The obtained sponge powder is subjected to autoclaving to obtain sponge fragments. Step 3: Inoculate the working strain Streptomyces XL-34 into Gause's Synthetic Medium No. 1 and culture with shaking at 30°C and 150 rpm for 24 hours until OD600 = 1.0. Mix the sponge fragments and bacterial suspension in a sterile container with a solid-liquid ratio of 1:10-20 mL and shake to mix uniformly. Step 4: Set the fermentation temperature to 30°C, adjust the pH to 7.2, and perform aeration fermentation in the container containing the sponge fragments and working strain for 3 to 7 days. Stop fermentation when the organic matter level falls below the threshold. Step 5: Heat at 80°C for 20 minutes to stop the activity of the bacteria, then remove any remaining bacteria and decomposition products by ultrasonic cleaning. Step 6: By firing at 300°C for 10 minutes, trace amounts of organic matter are removed while simultaneously preserving the inorganic framework. Step 7: The product after the processing in Step 6 is subjected to liquid-phase gravity separation and dried to obtain uniaxial siliceous spicules.

[0008] A freeze-drying apparatus used in the method for purifying the siliceous spicules, Including a base, a support frame is fixedly mounted on the base, a freeze-drying barrel is fixedly mounted on the support frame, a first trachea and a second trachea are fixedly connected to the freeze-drying barrel, the first trachea is used for vacuuming and is connected to an external vacuuming system, the second trachea is used for discharge and recovery of water vapor formed by the sublimation of ice and is connected to an external steam condensation and recovery system, and an evaporator is further mounted at the bottom of the base. A barrel lid is provided on one side of the freeze-drying barrel, the barrel lid is used to seal the freeze-drying barrel, a locking mechanism is provided between the barrel lid and the freeze-drying barrel, a movable base is fixed to the bottom of the barrel lid, and casters are attached to the bottom of the movable base. The barrel lid is provided with a plurality of symmetrically arranged pivot shafts, one side of each pivot shaft is rotatably connected to the barrel lid, the other side of each pivot shaft is rotatably mounted on a support piece, a plurality of support rods are fixedly mounted on each pivot shaft, the support rods are used to support sponge trays, a collision platform is fixed to the barrel lid to support some of the support rods, a pivot drive assembly is provided on one side of each pivot shaft, the pivot drive assembly is capable of driving the pivot shaft to rotate it by a certain angle and then release, causing it to fall by its own weight, the support rods fall together with the pivot shaft and then collide with the collision platform, causing the sponge trays on the support rods to vibrate, and the vibrating sponge trays to invert the sponges in this freeze-drying apparatus.

[0009] Preferably, a vibrating head is provided penetrating the impact platform, a spring is fixed between the vibrating head and the impact platform, the vibrating head is slidably connected to the impact platform, and one end of the vibrating head abuts against the support rod.

[0010] Preferably, a collection box is fixedly mounted at the center of the barrel lid, the support piece is fixed to the collection box, the pivot shaft is installed symmetrically with respect to the collection box, a collection chamber is provided inside the collection box, a plurality of collection ports communicating with the collection chamber are symmetrically provided in the collection box, guide plates fixed to the collection box are provided at the bottom of the collection ports, each of the guide plates is mounted on the bottom of one of the pivot shafts, and a discharge nozzle is provided at the bottom of the collection box.

[0011] Preferably, the rocking drive assembly includes a rotating shaft fixed to one side of each of the rocking shafts, a gear fixed to one end of the rotating shaft, each gear meshing with a rack, an engaging plate fixed between the two racks, the engaging plate slidably mounted in the recovery box, a cam provided on one side of the engaging plate, the cam fixed to a power shaft, the power shaft passing through the freeze-drying barrel and fixed to the motor shaft of a motor, the motor fixed to a motor base, and the motor base fixed to the base.

[0012] Preferably, at least two guide rods are fixed to the engagement plate, each of which passes through a guide seat, and the guide seats are fixedly provided in the recovery box.

[0013] Preferably, two slide rails are fixed symmetrically on the base, a slider is slidably mounted within the slide rails, a connecting bar is fixed to one side of the slider, and the connecting bar is fixed to the movable base.

[0014] Preferably, an integrated electrical control box is fixedly mounted on the base.

[0015] Based on the above, the present invention has the following beneficial effects. 1. By employing a purification method based on bacterial species, the resulting uniaxial siliceous spicules have a high recovery rate, a low spicule breakage rate, high purity, and are less prone to breakage. 2. It employs gravity sorting technology, enabling large-scale industrial production. 3. The freeze-drying apparatus has multiple oscillating shafts symmetrically arranged on the barrel lid, one side of each oscillating shaft is rotatably connected to the barrel lid, and the other side is rotatably mounted on a support piece. Multiple support rods are fixed to the oscillating shafts, and the support rods are used to support sponge trays. An impact platform is fixed to the barrel lid to support some of the support rods. An oscillating drive assembly is provided on one side of the oscillating shaft, which can be driven to rotate the oscillating shaft by a certain angle and then released, allowing it to fall by its own weight. After the support rods fall together with the oscillating shaft, they impact the impact platform, causing the sponge trays on the support rods to vibrate. When freeze-drying is performed in this manner, the vibrating sponge trays invert the sponges to some extent, significantly improving the freeze-drying effect and making the freeze-dried sponge quality more uniform. 4. A vibrating head is installed through the impact platform, a spring is fixed between the vibrating head and the impact platform, and the vibrating head and the impact platform are slidably connected. One end of the vibrating head is brought into contact with the support rod. Due to the installation of the vibrating head and spring, the support rod collides directly with the vibrating head after falling, and as the vibrating head descends, it stretches the spring, providing a cushioning effect against the collision between the support rod and the impact platform. By replacing the spring with one that has a different elastic modulus, different impact effects can be produced, thereby changing the vibration effect received by the sponge tray on the support rod and adapting to sponge particles of different sizes. 5. The oscillating drive assembly includes a rotating shaft fixed to one side of each oscillating shaft, a gear fixed to one end of the rotating shaft, each gear meshing with a rack, an engaging plate fixed between the two racks, the engaging plate slidably mounted on a recovery box, a cam provided on one side of the engaging plate, the cam fixed to a power shaft, the power shaft passing through the freeze-drying barrel and fixed to the motor shaft of the motor, the motor fixed to a motor base, and the motor base fixed to a pedestal. When the engagement plate is manually pushed downwards, the rotation axis rotates by a certain angle, causing the sponge tray on the support rod to tilt. The sponge particles in the sponge tray then enter the collection port along the guide plate under the force of gravity, and finally enter the collection chamber. The sponge particles that enter the collection chamber are then discharged from the discharge nozzle. The user can easily collect all the freeze-dried sponge particles in the sponge tray at once by simply placing a storage container at the bottom of the discharge nozzle.

Brief Description of the Drawings

[0016] To more clearly explain the technical solutions in the embodiments of the invention or the prior art, the drawings necessary to be used in the following description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0017] [Figure 1] It is a schematic external view of the purification device. [Figure 2] It is a schematic internal structure view of the purification device. [Figure 3] It is an enlarged schematic view of part A in FIG. 2. [Figure 4] It is a cross-sectional view of FIG. 2. [Figure 5] It is a side view of FIG. 2. [Figure 6] It is an enlarged schematic view of part B in FIG. 5. [Figure 7] It is a cross-sectional view of FIG. 1.

[0018] Description of the Reference Signs 11, pedestal; 12, moving seat; 14, caster; 15, barrel lid; 16, slide rail; 17, connecting bar; 18, slider; 19, electric control box; 20, motor base; 21, motor; 22, power shaft; 23, freeze-drying barrel; 24, first trachea; 25, second trachea; 26, recovery box; 27, recovery port; 28, swing shaft; 29, support rod; 30, collision platform; 31, guide plate; 32, recovery chamber; 33, discharge nozzle; 34, engagement plate; 35, support piece; 36, rotating shaft; 37, gear; 38, rack; 39, guide rod; 40, guide seat; 41, vibration head; 42, spring; 43, cam; 44, locking structure.

Modes for Carrying Out the Invention

[0019] The method for purifying siliceous spicules includes the following steps.

[0020] Example 1 Step 1: Untreated sponge material is immersed in clean water 1 to 4 times, stirred, and allowed to settle. After filtering out the mud and sand, it is centrifuged and then freeze-dried using a freeze-drying apparatus. Subsequently, it is pulverized to further break down the organic substrate structure and obtain sponge powder. Sponge powder increases the surface area, which is advantageous for microbial penetration.

[0021] Step 2: Sterilize the obtained sponge powder by autoclaving to obtain sponge fragments. Set the steam temperature to 101-133°C and the sterilization time to 7-20 minutes.

[0022] Step 3: Inoculate the working strain Streptomyces XL-34 into Gause Medium No. 1 and culture with shaking at 30°C and 150 rpm for 24 hours until OD600 = 1.0. Mix the sponge fragments and bacterial suspension in a sterile container in a solid-liquid ratio of 1:10-20 mL and shake to mix uniformly.

[0023] Step 4: Set the fermentation temperature to 30°C, adjust the pH to 7.2 with NaOH / HCl, aerate the container containing the sponge fragments and the working bacterial strain (0.5-1 vvm), and allow it to ferment for 3-7 days (sampling daily to monitor the decomposition rate). Stop fermentation when the organic matter level falls below the threshold (≤0.05%).

[0024] Step 5: Heat at a high temperature of 80°C for 20 minutes to stop the activity of the bacterial community, and remove residual bacterial cells and decomposition products by ultrasonic cleaning.

[0025] Step 6: By firing at a high temperature of 300°C for 10 minutes, trace amounts of organic matter are removed while simultaneously preserving the inorganic framework.

[0026] Step 7: Liquid-phase gravity separation is performed on the product that has undergone the processing in Step 6. By adjusting the inclination angle of the separation table surface and the flow rate of the washing water flow, impurities and spicules are naturally distributed due to gravity and differences in particle size, allowing substances from different regions to be recovered and dried to obtain a high-purity product.

[0027] The purified uniaxial siliceous spicules obtained have a purity of ≥99%, a spicule breakage rate of less than 10%, and a recovery rate of 80%.

[0028] Example 2 This embodiment provides a method for purifying siliceous spicules according to the present invention. The conditions for Step 1 and Step 2 are the same as those in Example 1. In Step 3, two strains of bacteria, Streptomyces XL-34 and Bacillus subtilis, were inoculated. Streptomyces XL-34 was inoculated into Gause Medium No. 1 and cultured with shaking for 24 hours at 30°C and 150 rpm until the OD600 ≈ 1.0, while Bacillus subtilis was inoculated into LB Medium and cultured with shaking for 24 hours at 30°C and 150 rpm until the OD600 ≈ 1.0. The inoculation ratio of the two strains was 2:1. Digestion was carried out according to a solid-liquid ratio of 1:20 mL of sponge fragments to bacterial suspension, and all other conditions were kept the same. In step 4, the fermentation temperature is set to 32°C, the pH is adjusted to 7.0 with NaOH / HCl, and all other conditions are the same. In step 5, the bacteria are heated at a high temperature of 90°C for 10 minutes to stop their activity. The conditions for Steps 6 and 7 are the same as in Example 1.

[0029] In this embodiment, the purified siliceous spicules obtained have a purity of ≥99%, a spicule breakage rate of <15%, and a recovery rate of 87%.

[0030] As shown in Figures 1-7, the freeze-drying apparatus used in the siliceous spicule purification method includes a base 11, a support frame fixedly mounted on the base 11, a freeze-drying barrel 23 fixedly mounted on the support frame, and a first tracheus 24 and a second tracheus 25 fixedly connected to the freeze-drying barrel 23. The first tracheus 24 is used for vacuuming and is connected to an external vacuuming system, and the second tracheus 25 is used for discharge and recovery of water vapor formed by the sublimation of ice and is connected to an external steam condensation and recovery system. An evaporator is further mounted at the bottom of the base 11 (not shown; the same as in a typical freeze-drying apparatus).

[0031] A barrel lid 15 is provided on one side of the freeze-drying barrel 23, and the barrel lid 15 is used to seal the freeze-drying barrel 23. A locking structure 44 is provided between the barrel lid 15 and the freeze-drying barrel 23, and the locking structure 44 enables locking and unlocking of the barrel lid 15 and the freeze-drying barrel 23 (the locking structure can be used according to actual needs, and any ordinary locking structure of the art can be adopted in this application). A movable seat 12 is fixed to the bottom of the barrel lid 15, and casters 14 are attached to the bottom of the movable seat 12. After unlocking, the barrel lid 15 and the freeze-drying barrel 23 are designed to be pull-out, which is convenient for inserting and removing sponge trays. Multiple pivot shafts 28 are symmetrically provided on the barrel lid 15, one side of each pivot shaft 28 is rotatably connected to the barrel lid 15, and the other side of each pivot shaft 28 is rotatably provided on a support piece 35. Multiple support rods 29 are fixedly provided on each pivot shaft 28, and the support rods 29 are used to support sponge trays. A collision platform 30 for supporting some of the support rods 29 is fixed to the barrel lid 15, and a pivot drive assembly is provided on one side of each pivot shaft 28, which can drive the pivot shaft 28 so that it falls automatically after rotating by a certain angle. The support rods 29 fall together with the pivot shaft 28 and then collide with the collision platform 30, causing the sponge trays on the support rods 29 to vibrate. When freeze-drying is performed in this manner, the vibrating sponge trays invert the sponges to some extent, significantly improving the freeze-drying effect and making the freeze-drying quality of the sponges more uniform.

[0032] In particular, a vibrating head 41 is provided penetrating the impact platform 30, a spring 42 is fixed between the vibrating head 41 and the impact platform 30, the vibrating head 41 is slidably connected to the impact platform 30, and one end of the vibrating head 41 abuts against the support rod 29. The installation of the vibrating head 41 and the spring 42 causes the support rod 29 to collide directly with the vibrating head 41 after it falls, and as the vibrating head 41 descends, it stretches the spring 42, thus providing a buffering effect against the collision between the support rod 29 and the impact platform 30. By replacing the spring 42 with one having a different elastic modulus, different collision effects can be obtained. This changes the vibration effect received by the sponge tray on the support rod 29, allowing it to be adapted to sponge particles of different sizes.

[0033] A recovery box 26 is fixedly attached to the center of the barrel cover 15, the support piece 35 is fixed to the recovery box 26, the pivot shaft 28 is installed symmetrically with respect to the recovery box 26, a recovery chamber 32 is provided inside the recovery box 26, a plurality of recovery ports 27 communicating with the recovery chamber 32 are symmetrically provided inside the recovery box 26, a guide plate 31 fixed to the recovery box 26 is provided at the bottom of the recovery ports 27, each of the guide plates 31 is mounted on the bottom of one of the pivot shafts 28, and a discharge nozzle 33 is provided at the bottom of the recovery box 26.

[0034] The rocking drive assembly includes a rotating shaft 36 fixed to one side of each of the rocking shafts 28, a gear 37 fixed to one end of the rotating shaft 36, each gear 37 meshing with a rack 38, an engaging plate 34 fixed between the two racks 38, the engaging plate 34 slidably mounted in the collection box 26, a cam 43 provided on one side of the engaging plate 34, the cam 43 fixed to a power shaft 22, the power shaft 22 passing through the freeze-drying barrel 23 and fixed to the motor shaft of a motor 21, the motor 21 fixed to a motor base 20, and the motor base 20 fixed to the base 11. When the motor 21 is started, it rotates the power shaft 22, which rotates the cam 43, which in turn pushes the engagement plate 34 downward as it rotates, until the cam 43 separates from the engagement plate 34, and as the engagement plate 34 descends, it also lowers the rack 38, which in turn rotates the rotation shaft 36 and the oscillating shaft 28 through the meshing of the rack 38 and the gear 37, which in turn rotates the support rod 29 and the sponge tray on the support rod 29, and after the cam 43 separates from the engagement plate 34, the sponge tray on the support rod 29 falls under its own weight, which in turn rotates the support rod 29 and the oscillating shaft 28, causing the support rod 29 to collide with the impact platform 30 and invert the sponge particles in the sponge tray.

[0035] At least two guide rods 39 are fixed to the engagement plate 34, and each of the guide rods 39 passes through a guide seat 40, which is fixedly installed in the recovery box 26.

[0036] Two slide rails 16 are symmetrically fixed to the base 11, and a slider 18 is slidably mounted within the slide rails 16. A connecting bar 17 is fixed to one side of the slider 18, and the connecting bar 17 is fixed to the movable seat 12. After manually pulling out the barrel cover 15, manually pushing the engaging plate 34 downward causes the rotating shaft 36 to rotate by a certain angle, tilting the sponge tray on the support rod 29. The sponge particles in the sponge tray enter the collection port 27 along the guide plate 31 under the force of gravity, and finally enter the collection chamber 32. The sponge particles that enter the collection chamber 32 are discharged from the discharge nozzle 33. The user can easily collect all freeze-dried sponge particles in the sponge tray at once by simply placing a storage container at the bottom of the discharge nozzle 33. After collection is complete, the empty sponge tray can be manually removed.

[0037] An integrated electrical control box 19 is fixedly mounted on the base 11, which controls the operation of each electrical device and supplies power to it.

[0038] Operating principle of freeze-drying apparatus The barrel lid 15 is manually pulled out, a sponge tray containing moist sponge particles is placed on the support rod 29, the barrel lid 15 is manually returned to its original position and locked through the locking structure 44, and the freeze-drying operation is performed after the locking is complete. During the freeze-drying process, the motor 21 is started via the electrical control box 19, the motor 21 rotates the power shaft 22, the power shaft 22 rotates the cam 43, the cam 43 pushes down the engagement plate 34 as it rotates, and this continues until the cam 43 separates from the engagement plate 34, the rack 38 is lowered as the engagement plate 34 descends, the rotating shaft 36 and the oscillating shaft 28 are rotated through the meshing of the rack 38 and the gear 37, the oscillating shaft 28 rotates the support rod 29 and the sponge tray on the support rod 29, after the cam 43 separates from the engagement plate 34, the sponge tray on the support rod 29 falls under its own weight, rotating the support rod 29 and the oscillating shaft 28, the support rod 29 and the impact platform 30 collide, and the sponge particles in the sponge tray are inverted. After freeze-drying is complete, the motor 21 is stopped, the locking structure 44 is manually released, the barrel lid 15 is pulled out, the engaging plate 34 is manually pushed downward, and the rotating shaft 36 is rotated by a certain angle. This causes the sponge tray on the support rod 29 to tilt, and the sponge particles in the sponge tray enter the collection port 27 along the guide plate 31 under the force of gravity, and finally enter the collection chamber 32. The sponge particles that enter the collection chamber 32 are then discharged from the discharge nozzle 33. The user can collect all the freeze-dried sponge particles in the sponge tray at once by simply placing a storage container at the bottom of the discharge nozzle 33.

[0039] The embodiments described above are merely for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand and implement the present invention; they do not limit the scope of protection of the present invention. All equivalent changes or modifications made based on the spirit substance of the present invention should be included within the scope of protection of the present invention.

Claims

1. A freeze-drying apparatus for purifying siliceous spicules, The apparatus includes a base (11), on which a support frame is fixedly mounted, on which a freeze-drying barrel (23) is fixedly mounted, on which a first trachea (24) and a second trachea (25) are fixedly connected, the first trachea (24) is used for vacuuming and is connected to an external vacuuming system, the second trachea (25) is used for discharge and recovery of water vapor formed by the sublimation of ice and is connected to an external steam condensation and recovery system, and an evaporator is further mounted at the bottom of the base (11). A barrel lid (15) is provided on one side of the freeze-drying barrel (23), the barrel lid (15) is used to seal the freeze-drying barrel (23), a locking structure (44) is provided between the barrel lid (15) and the freeze-drying barrel (23), a movable seat (12) is fixed to the bottom of the barrel lid (15), and a caster (14) is attached to the bottom of the movable seat (12). The barrel lid (15) is provided with a plurality of symmetrically arranged pivot shafts (28), one side of each pivot shaft (28) is rotatably connected to the barrel lid (15), the other side of each pivot shaft (28) is rotatably mounted on a support piece (35), a plurality of support rods (29) are fixedly mounted on each pivot shaft (28), the support rods (29) are used to support a sponge tray, a collision platform (30) for supporting some of the support rods (29) is fixed to the barrel lid (15), and a pivot drive assembly is provided on one side of each pivot shaft (28). The rocking drive assembly includes a rotating shaft (36) fixed to one side of each of the rocking shafts (28), a gear (37) fixed to one end of the rotating shaft (36), each gear (37) meshing with a rack (38), an engaging plate (34) fixed between the two racks (38), the engaging plate (34) slidably mounted in the recovery box (26), a cam (43) provided on one side of the engaging plate (34), the cam (43) fixed to a power shaft (22), the power shaft (22) passing through the freeze-drying barrel (23) and fixed to the motor shaft of a motor (21), the motor (21) fixed to a motor base (20), the motor base (20) fixed to the base (11), A vibrating head (41) is provided penetrating the impact platform (30), a spring (42) is fixed between the vibrating head (41) and the impact platform (30), the vibrating head (41) is slidably connected to the impact platform (30), and one end of the vibrating head (41) abuts against the support rod (29), The oscillating drive assembly is capable of being driven to rotate the oscillating shaft (28) and fall by its own weight, and the support rod (29) falls together with the oscillating shaft (28) and then collides with the impact platform (30), causing the sponge tray on the support rod (29) to vibrate, and the vibrating sponge tray inverts the sponge, characterized in that the freeze-drying apparatus.

2. The freeze-drying apparatus according to claim 1, characterized in that a recovery box (26) is fixedly provided at the center of the barrel lid (15), the support piece (35) is fixed to the recovery box (26), the pivot shaft (28) is installed symmetrically with respect to the recovery box (26), a recovery chamber (32) is provided inside the recovery box (26), a plurality of recovery ports (27) communicating with the recovery chamber (32) are symmetrically provided on the recovery box (26), a guide plate (31) fixed to the recovery box (26) is provided at the bottom of the recovery ports (27), each of the guide plates (31) is mounted on the bottom of one of the pivot shafts (28), and a discharge nozzle (33) is provided at the bottom of the recovery box (26).

3. The freeze-drying apparatus according to claim 1, characterized in that at least two guide rods (39) are fixed to the engagement plate (34), each of the guide rods (39) passes through a guide seat (40), and the guide seat (40) is fixedly provided to the recovery box (26).

4. The freeze-drying apparatus according to claim 1, characterized in that two slide rails (16) are symmetrically fixed to the base (11), a slider (18) is slidably mounted within the slide rails (16), a connecting bar (17) is fixed to one side of the slider (18), and the connecting bar (17) is fixed to the movable seat (12).

5. The freeze-drying apparatus according to claim 1, characterized in that an electrical control box (19) is fixedly provided on the base (11).

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