Medical-grade sodium hyaluronate vacuum freeze-drying forming system

Abstract

The utility model discloses a medical grade sodium hyaluronate vacuum freeze-drying forming system, which comprises a sealing tank, a spreading disc, a refrigerating machine, a vacuum machine and an electric heating wire, a water scraping mechanism is arranged in the sealing tank, the water scraping mechanism comprises a water scraping strip, a connecting rod, a rotating shaft, a rotating disc and a first motor, the connecting rod is fixedly arranged at the lower end of the water scraping strip, and the rotating shaft is arranged on the rotating disc. The rotating shaft is fixedly installed on the side end face of the sealing tank, a shaft hole matched with the rotating shaft is formed in the connecting rod, the rotating disc is fixedly installed on an output shaft of the first motor, an eccentric shaft is arranged on the front end face of the rotating disc, and a sliding groove matched with the eccentric shaft is formed in the connecting rod. The device has the advantages of automatic condensate water scraping, active drainage and efficient dehumidification, and solves the problems of humidity rise, low drying efficiency and difficulty in drainage caused by accumulation of condensate water on the inner wall of the sealing tank.

Description

Technical Field

[0001] This utility model relates to the field of freeze dryer technology, specifically a medical-grade sodium hyaluronate vacuum freeze drying molding system. Background Technology

[0002] Vacuum freeze-drying is an advanced drying technology widely used in the pharmaceutical, biological product, and food processing fields, especially suitable for the dehydration of heat-sensitive substances. Medical-grade sodium hyaluronate, as an important biomaterial, is widely used in ophthalmic surgery, skin repair, joint lubrication, and other fields, requiring extremely high purity, stability, and sterility. Therefore, vacuum freeze-drying is typically employed in its production process to ensure product quality.

[0003] Existing vacuum freeze-drying systems typically include core components such as sealed tanks, material trays, refrigeration units, heating units, and vacuum pumping systems. During freeze-drying, moisture in the material freezes into ice crystals at low temperatures, which are then removed through sublimation under vacuum conditions, achieving efficient drying. However, in actual operation, as water vapor rises and condenses at the top of the sealed tank, water droplets or films easily form on the inner wall, increasing humidity inside the tank, affecting drying efficiency, and potentially causing moisture to seep back onto the material surface, reducing product quality. Furthermore, traditional equipment lacks effective dehumidification structures, especially during long-term operation, making it difficult to drain condensate in time, easily causing secondary evaporation, disrupting the vacuum environment, and increasing energy consumption. Simultaneously, under negative pressure, drainage is limited; conventional gravity drainage methods often fail to effectively remove accumulated water, severely affecting the system's continuity and stability. Therefore, a medical-grade sodium hyaluronate vacuum freeze-drying molding system is needed to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a medical-grade sodium hyaluronate vacuum freeze-drying molding system, which has the advantages of automatic condensate removal, active drainage and efficient dehumidification, and solves the problems of increased humidity, low drying efficiency and drainage difficulties caused by condensate accumulation on the inner wall of the sealed tank.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a medical-grade sodium hyaluronate vacuum freeze-drying molding system, comprising a sealed tank, a spreading tray, a refrigeration unit, a vacuum unit, and a heating wire, wherein a water scraping mechanism is provided inside the sealed tank;

[0006] The wiping mechanism includes a wiper blade, a connecting rod, a rotating shaft, a turntable, and a first motor. The connecting rod is fixedly installed at the lower end of the wiper blade, the rotating shaft is fixedly installed on the side end face of the sealed tank, the connecting rod is provided with a shaft hole that mates with the rotating shaft, the turntable is fixedly installed on the output shaft of the first motor, the front end face of the turntable is provided with an eccentric shaft, and the connecting rod is provided with a sliding groove that mates with the eccentric shaft.

[0007] In a preferred embodiment of the medical-grade sodium hyaluronate vacuum freeze-drying molding system of this utility model, the wiper strip includes a scraper and a water storage tank. The scraper is attached to the lower top surface of the sealed tank, and the water storage tank is located at the bottom of the lower surface of the wiper strip.

[0008] As a preferred embodiment of the medical-grade sodium hyaluronate vacuum freeze-drying molding system of this utility model, the outer end face of the eccentric shaft is provided with a rotatably connected bushing.

[0009] In a preferred embodiment of the medical-grade sodium hyaluronate vacuum freeze-drying molding system of this utility model, a flexible tube is provided at the bottom of the water storage tank, and a drain valve is provided at the end of the flexible tube.

[0010] As a preferred embodiment of the medical-grade sodium hyaluronate vacuum freeze-drying molding system of this utility model, the drain valve includes an inlet, an outlet, and a valve cavity. A valve core is rotatably connected inside the valve cavity, and a second motor for driving the valve core is provided on the side end face of the drain valve.

[0011] In a preferred embodiment of the medical-grade sodium hyaluronate vacuum freeze-drying molding system of this utility model, the valve cavity is a circular cavity, the valve core is a disc-shaped structure, and water channels are uniformly arranged on the side end face of the valve core.

[0012] As a preferred embodiment of the medical-grade sodium hyaluronate vacuum freeze-drying molding system of this utility model, the spreading tray is made of 316L stainless steel, and the bottom of the spreading tray is provided with pulleys that are slidably connected to the sealed container.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, through the design of a scraping mechanism, uses a first motor to drive a turntable that drives an eccentric shaft, causing a connecting rod to swing around the shaft. This controls the scraper to periodically scrape the inner wall of the top of the sealed tank. The scraper is in close contact with the top of the tank, scraping the condensed water vapor into the water storage tank and guiding it to the drain valve through the bottom hose. The combination of the water storage tank and the drain valve prevents secondary evaporation of water inside the tank, effectively reducing the internal humidity. This structure solves the problem of increased humidity caused by condensate retention on the top of the tank during traditional freeze-drying processes, significantly improving the drying efficiency of sodium hyaluronate while reducing energy waste.

[0015] 2. The drain valve of this utility model adopts a valve core with a water-carrying groove. The disc-shaped valve core is driven by a second motor to rotate periodically. The water-carrying groove transfers the water flowing into the water storage tank from the negative pressure zone to the normal pressure drain port to achieve active drainage. The sealed disc structure of the valve core isolates the air pressure inside and outside the tank during the transfer process, avoiding vacuum leakage. This design solves the pain point of poor passive drainage in the negative pressure system, ensuring efficient discharge of condensate and maintaining a stable vacuum environment inside the sealed tank, thus ensuring the continuity and reliability of the drying process. Attached Figure Description

[0016] Figure 1 This is a first-view overall structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective;

[0018] Figure 3 This is a side sectional view of the present invention;

[0019] Figure 4 This is a schematic diagram of the wiper mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram of the drain valve structure of this utility model;

[0021] Figure 6 For the present utility model Figure 4 Enlarged view of point A in the middle;

[0022] Figure 7 For the present utility model Figure 4 Enlarged view of section B in the middle.

[0023] In the diagram: 1. Sealed tank; 2. Spreading tray; 201. Pulley; 3. Refrigeration unit; 4. Vacuum unit; 5. Heating wire; 6. Scraper mechanism; 601. Scraper strip; 6011. Scraper blade; 6012. Water storage tank; 602. Connecting rod; 6021. Shaft hole; 6022. Slide groove; 603. Turntable; 6031. Eccentric shaft; 6032. Bushing; 604. First motor; 605. Rotating shaft; 606. Drain valve; 6061. Water inlet; 6062. Water outlet; 6063. Valve chamber; 607. Second motor; 608. Valve core; 6081. Water channel; 609. Hose. Detailed Implementation

[0024] Please see Figures 1-7 A medical-grade sodium hyaluronate vacuum freeze-drying molding system includes a sealed tank 1, a spreading tray 2, a refrigerator 3, a vacuum machine 4, and a heating wire 5. A scraping mechanism 6 is provided inside the sealed tank 1.

[0025] The wiping mechanism 6 includes a wiper blade 601, a connecting rod 602, a rotating shaft 605, a turntable 603, and a first motor 604. The connecting rod 602 is fixedly installed at the lower end of the wiper blade 601, the rotating shaft 605 is fixedly installed on the side end face of the sealed tank 1, the connecting rod 602 is provided with a shaft hole 6021 that mates with the rotating shaft 605, the turntable 603 is fixedly installed on the output shaft of the first motor 604, the front end face of the turntable 603 is provided with an eccentric shaft 6031, and the connecting rod 602 is provided with a sliding groove 6022 that mates with the eccentric shaft 6031.

[0026] Furthermore, the wiper strip 601 includes a scraper 6011 and a water tank 6012. The scraper 6011 is attached to the lower top surface of the sealed tank 1, and the water tank 6012 is located at the bottom of the lower surface of the wiper strip 601.

[0027] The first motor 604 drives the turntable 603 to rotate, and the eccentric shaft 6031 drives the connecting rod 602 to swing around the rotating shaft 605, so that the wiper strip 601 scrapes the inner end face of the sealed tank 1, scrapes off the water vapor formed on the top of the inner end face of the sealed tank 1, reduces the humidity in the sealed tank 1, and improves the drying efficiency.

[0028] Furthermore, the outer end face of the eccentric shaft 6031 is provided with a rotatably connected bushing 6032.

[0029] The friction between the eccentric shaft 6031 and the connecting rod 602 is reduced by the bushing 6032, thereby improving the smoothness of the swing of the connecting rod 602, while reducing the wear of the eccentric shaft 6031 and the connecting rod 602, and extending the service life of the equipment.

[0030] Furthermore, a flexible hose 609 is provided at the bottom of the water storage tank 6012, and a drain valve 606 is provided at the end of the flexible hose 609.

[0031] The water in the water storage tank 6012 is drained in time by the drain valve 606, thereby avoiding secondary evaporation of water. The structure of the hose 609 allows it to swing slowly with the wiper blade 601.

[0032] Furthermore, the drain valve 606 includes an inlet 6061, an outlet 6062, and a valve cavity 6063. A valve core 608 is rotatably connected inside the valve cavity 6063, and a second motor 607 for driving the valve core 608 is provided on the side end face of the drain valve 606.

[0033] The second motor 607 drives the valve core 608 to rotate, thereby actively draining water and avoiding internal negative pressure that would prevent water from flowing out passively, thus improving the stability of drainage.

[0034] Furthermore, the valve cavity 6063 is a circular cavity, the valve core 608 is a disc-shaped structure, and water channels 6081 are evenly arranged on the side end face of the valve core 608.

[0035] The second motor 607 drives the valve core 608 to rotate, which transfers the water flowing into the water tank 6081 from the inlet 6061 to the outlet, thus transferring the water in the negative pressure zone to the normal pressure zone. This achieves drainage on the one hand, and avoids affecting the negative pressure in the sealed tank 1 on the other.

[0036] Furthermore, the material spreading tray 2 is made of 316L stainless steel, and the bottom of the material spreading tray 2 is provided with a pulley 201 that is slidably connected to the sealed container 1.

[0037] Made of 316L stainless steel, it meets the production requirements of medical-grade sodium hyaluronate and has high thermal conductivity, enabling rapid and uniform heating and cooling. The pulley 201 facilitates the removal and installation of the spreading tray 2.

[0038] In use, the medical-grade sodium hyaluronate solution to be treated is first evenly placed on a spreading tray 2 made of 316L stainless steel and equipped with pulleys 201 at the bottom. The spreading tray 2 is then easily slid into the sealed container 1 into the appropriate position using the pulleys 201. Next, the refrigeration unit 3 is started to cool the sealed container 1, causing the solution to freeze and solidify. At the same time, the vacuum unit 4 is turned on to evacuate the sealed container 1 to the required negative pressure. During this process, the heating wire 5 can assist in temperature control as needed. When water vapor forms at the top of the sealed container 1 due to temperature changes, the first motor 604 is started. The first motor 604 drives the turntable 603 to rotate, and the eccentric shaft 6031 at the front end of the turntable 603 rotates accordingly. The eccentric shaft 6031 slides in the groove 6022 of the connecting rod 602 through the bushing 6032, causing the connecting rod 602 to swing around the rotating shaft 605 fixed to the side end face of the sealed container 1. This causes the scraper 601 to scrape the top of the inner end face of the sealed container 1. The scraper 6011 is attached to the lower top surface of the sealed tank 1, scraping water vapor into the water storage tank 6012 at the bottom of the lower surface of the scraper 601. The hose 609 connected to the bottom of the water storage tank 6012 swings slowly with the scraper 601. When there is a lot of water in the water storage tank 6012, the second motor 607 at the drain valve 606 is activated. The second motor 607 drives the disc-shaped valve core 608 to rotate in the circular valve cavity 6063. The water channel 6081 on the side surface of the valve core 608 transfers the water flowing into the water storage tank 6012 through the inlet 6061 to the outlet 6062 for discharge. Active drainage is achieved without disrupting the negative pressure in the sealed tank 1, avoiding secondary evaporation of water and affecting the drying effect. After the freeze-drying process is completed, the refrigeration unit 3, vacuum unit 4, first motor 604 and second motor 607 are turned off. The sealed tank 1 is opened, and the material tray 2 is pulled out through the pulley 201 to take out the dried and shaped medical-grade sodium hyaluronate.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A medical-grade sodium hyaluronate vacuum freeze-drying molding system, comprising a sealed container (1), a spreading tray (2), a refrigerator (3), a vacuum machine (4), and a heating wire (5), characterized in that: The sealed container (1) is equipped with a scraper mechanism (6); The wiping mechanism (6) includes a wiping strip (601), a connecting rod (602), a rotating shaft (605), a turntable (603), and a first motor (604). The connecting rod (602) is fixedly installed at the lower end of the wiping strip (601), and the rotating shaft (605) is fixedly installed on the side end face of the sealed tank (1). The connecting rod (602) is provided with a shaft hole (6021) that mates with the rotating shaft (605). The turntable (603) is fixedly installed on the output shaft of the first motor (604). The front end face of the turntable (603) is provided with an eccentric shaft (6031), and the connecting rod (602) is provided with a sliding groove (6022) that mates with the eccentric shaft (6031).

2. The medical-grade sodium hyaluronate vacuum freeze-drying molding system as described in claim 1, characterized in that: The wiper blade (601) includes a scraper (6011) and a water tank (6012). The scraper (6011) is attached to the lower top surface of the sealed tank (1), and the water tank (6012) is located at the bottom of the lower surface of the wiper blade (601).

3. The medical-grade sodium hyaluronate vacuum freeze-drying molding system as described in claim 1, characterized in that: The outer end face of the eccentric shaft (6031) is provided with a rotatably connected bushing (6032).

4. The medical-grade sodium hyaluronate vacuum freeze-drying molding system as described in claim 2, characterized in that: The bottom of the water storage tank (6012) is provided with a flexible hose (609), and the end of the flexible hose (609) is provided with a drain valve (606).

5. The medical-grade sodium hyaluronate vacuum freeze-drying molding system as described in claim 4, characterized in that: The drain valve (606) includes an inlet (6061), an outlet (6062), and a valve chamber (6063). A valve core (608) is rotatably connected inside the valve chamber (6063). A second motor (607) for driving the valve core (608) is provided on the side end face of the drain valve (606).

6. The medical-grade sodium hyaluronate vacuum freeze-drying molding system as described in claim 5, characterized in that: The valve cavity (6063) is a circular cavity, the valve core (608) is a disc-shaped structure, and water channels (6081) are evenly arranged on the side end face of the valve core (608).

7. The medical-grade sodium hyaluronate vacuum freeze-drying molding system as described in claim 1, characterized in that: The material spreading tray (2) is made of 316L stainless steel, and the bottom of the material spreading tray (2) is provided with a pulley (201) that is slidably connected to the sealed container (1).

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