Fermentation tank for producing polyglycolic acid

Abstract

The utility model discloses a fermentation tank for producing polyglycolic acid, which comprises a fermentation tank main body, a sealing top cover is fixedly mounted at the top end of the fermentation tank main body, and a feed pipe and an exhaust pipe are respectively and fixedly communicated with the front side and the rear side of the upper end of the sealing top cover; a stirring shaft rod is rotationally connected to the middle of the upper end of the sealing top cover in a penetrating mode through a rotating shaft, stirring blades used for stirring and mixing the interior of the fermentation tank body are fixedly installed on the outer curved surface of the lower end of the stirring shaft rod, and a first transmission gear and a second transmission gear are fixedly installed on the outer curved surface of the upper end of the stirring shaft rod in sequence from top to bottom; an L-shaped supporting plate is fixedly installed at the upper side end of the sealing top cover, a driving motor is fixedly installed at the upper end of the L-shaped supporting plate, and a transmission shaft rod is fixedly installed at the upper end, penetrating through the L-shaped supporting plate, of a transmission shaft part at the lower end of the driving motor. The stirring frequency of the stirring blades can be adjusted while stirring and mixing of polyglycolic acid raw materials in the fermentation tank main body are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of fermentation tanks, in particular to a fermentation tank for producing polyglycolic acid. Background Art

[0002] Polyglycolic acid is a linear polyester with excellent biocompatibility and biodegradability. In the body, it can be enzymatically hydrolyzed into low-molecular-weight glycolic acid and excreted through metabolic pathways. Due to its unique properties, polyglycolic acid has broad application prospects in the fields of medicine, packaging, and environmental protection. The main functions of polyglycolic acid include:

[0003] Medical Field: Sutures: Polyglycolic acid sutures are widely used in the medical field. Due to their excellent biocompatibility and biodegradability, sutures are gradually absorbed in the body, eliminating the need for secondary removal and reducing patient pain. Tissue Repair: Polyglycolic acid can also be used to prepare tissue repair materials such as artificial skin and artificial blood vessels. Drug Carrier: Polyglycolic acid can also be used as a drug carrier in the preparation of sustained-release drug systems. By encapsulating drugs in polyglycolic acid microspheres, sustained drug release can be achieved, improving therapeutic efficacy.

[0004] Environmental Protection: Water treatment: Polyglycolic acid can be used in the preparation of water treatment agents to remove harmful substances such as heavy metal ions and organic pollutants from water, thereby improving water quality. Soil remediation: Polyglycolic acid can also be used in soil remediation, promoting plant growth and development by improving soil structure and fertility.

[0005] However, in actual use, fermenters are used during the production of polyglycolic acid. Fermenters perform multiple functions, including providing a microbial growth environment, controlling the fermentation process, stirring and mixing, ensuring aseptic operation and preventing contamination, monitoring and regulating, and improving production efficiency and reducing costs. However, conventional fermenters have a relatively fixed stirring frequency when stirring polyglycolic acid, and cannot be adjusted according to the fermentation time of the polyglycolic acid. Consequently, they cannot adapt to the different stirring and mixing frequencies required for polyglycolic acid at different fermentation times. Utility Model Content

[0006] The present invention aims to provide a fermentation tank for the production of polyglycolic acid, addressing the aforementioned background art problem of using a fermentation tank for the fermentation of polyglycolic acid during production. The fermentation tank serves multiple functions, including providing an environment for microbial growth, controlling the fermentation process, stirring and mixing, ensuring aseptic operation and preventing contamination, monitoring and regulating, and improving production efficiency and reducing costs. However, conventional fermentation tanks have a relatively fixed stirring frequency when stirring polyglycolic acid, and are unable to adjust the stirring frequency according to the fermentation time of the polyglycolic acid, thereby failing to adapt to the different stirring and mixing frequency requirements of polyglycolic acid at different fermentation times.

[0007] To achieve the above object, the present invention provides the following technical solution: comprising a fermentation tank body, a sealing top cover fixedly mounted on the top of the fermentation tank body, and a feed pipe and an exhaust pipe fixedly connected to the front and rear sides of the upper end of the sealing top cover respectively;

[0008] The middle part of the upper end of the sealing top cover is rotatably connected with a stirring shaft through a rotating shaft, and the outer curved surface of the lower end of the stirring shaft is fixedly installed with a stirring blade for stirring and mixing the inside of the fermentation tank body, and the outer curved surface of the upper end of the stirring shaft is fixedly installed with a first transmission gear and a second transmission gear in sequence from top to bottom. The upper side end of the sealing top cover is fixedly installed with an L-shaped support plate, and the upper end of the L-shaped support plate is fixedly installed with a driving motor. The transmission shaft part of the lower end of the driving motor passes through the upper end of the L-shaped support plate and is fixedly installed with a transmission shaft, and the outer curved surface in the middle of the transmission shaft fits the movable The transmission ring is dynamically connected, and a transmission straight boss is provided at the side end of the transmission shaft, and a transmission straight groove is provided on the inner wall of the transmission ring. The outer curved surfaces of the upper and lower ends of the transmission ring are respectively fixedly mounted with a first adjusting gear and a second adjusting gear. An extension plate is fixedly mounted on the rear side of the upper end of the L-shaped support plate, and an electric telescopic rod is fixedly mounted through the middle of the extension plate. A connecting plate is fixedly mounted on the telescopic part of the lower end of the electric telescopic rod, and limiting sliding rods are fixedly mounted on both sides of the upper end of the connecting plate. A connecting rod is fixedly mounted on the side end of the connecting plate, and a connecting ring is fixedly mounted on the side end of the connecting rod.

[0009] Preferably, a discharge pipe is fixedly connected to the bottom of the fermentation tank body, and a switch valve is fixedly installed at the lower end of the discharge pipe.

[0010] Preferably, a constant temperature chamber is fixedly installed on the outer end of the fermentation tank body, a constant temperature tube is fixedly installed inside the constant temperature chamber, and the constant temperature tube is spirally distributed on the outer curved surface of the fermentation tank body, and the outer sides of the upper and lower ends of the constant temperature tube are fixedly connected with a water inlet pipe and a water outlet pipe respectively, and a temperature detector is fixedly installed through the outer side of the lower end of the fermentation tank body.

[0011] Preferably, there are several stirring blades, which are symmetrically distributed in an alternating manner from top to bottom along the outer curved surface of the lower end of the stirring shaft.

[0012] Preferably, the transmission shaft is rotatably connected to the upper end surface of the sealing top cover via a rotating shaft, and the transmission straight boss is movably connected to the inner wall of the transmission straight groove.

[0013] Preferably, the first adjusting gear and the first transmission gear are meshed and connected with each other, and the second adjusting gear and the outer tooth portion of the second transmission gear are matched and fitted with each other.

[0014] Preferably, the electric telescopic rod is equipped with a timing controller, and there are two limit slide rods, which are symmetrically distributed on both sides of the upper end of the connecting plate, and the upper ends of the limit slide rods are connected to both sides of the extension plate through a fitting connection, and the transmission ring is rotatably connected to the inner wall of the middle part of the connecting ring through a rotating shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] When the driving motor of the utility model is turned on, it drives the transmission shaft to rotate. When the transmission shaft rotates, the transmission straight boss cooperates with the transmission straight groove to drive the transmission ring to rotate. When the transmission ring rotates, it drives the first adjusting gear and the second adjusting gear to rotate. When the first adjusting gear rotates, it engages and drives the first transmission gear to rotate. When the first transmission gear rotates, it drives the stirring shaft to rotate. When the stirring shaft rotates, it drives the stirring blades to stir and mix the polyglycolic acid raw material inside the fermentation tank body, so that the polyglycolic acid raw material is fully mixed and fermented.

[0017] The utility model also controls the electric telescopic rod to be extended through the timing controller after the polyglycolic acid raw material inside the fermentation tank body is stirred and mixed for a certain period of time. When the electric telescopic rod is extended, it will drive the transmission ring to move linearly downward in sequence. When the transmission ring moves linearly downward, it will drive the first adjusting gear and the second adjusting gear to move linearly downward. When the first adjusting gear and the second adjusting gear move linearly downward, the meshing connection between the first adjusting gear and the first transmission gear will be released, and at the same time, the second adjusting gear will be meshed with the second transmission gear, thereby continuing to drive the stirring shaft to rotate through the second transmission gear, so that the rotation frequency of the stirring blade is changed, thereby achieving the stirring and mixing of the polyglycolic acid raw material inside the fermentation tank body while adjusting the stirring frequency of the stirring blade to meet the stirring and mixing requirements of the polyglycolic acid at different fermentation times. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a fermentation tank for polyglycolic acid production in this utility model. Figure 1 ;

[0019] Figure 2This is a schematic diagram of the overall structure of a fermentation tank for polyglycolic acid production in this utility model. Figure 2 ;

[0020] Figure 3 This is a schematic cross-sectional view of the overall structure of a fermentation tank for producing polyglycolic acid according to the present invention;

[0021] Figure 4 The utility model is a schematic cross-sectional view of the local structure of a fermentation tank for producing polyglycolic acid.

[0022] In the figure: 1. Fermentation tank body; 2. Sealing top cover; 3. Feed pipe; 4. Exhaust pipe; 5. Discharge pipe; 6. Constant temperature chamber; 7. Constant temperature tube; 8. Water inlet pipe; 9. Water outlet pipe; 10. Stirring blade; 11. First transmission gear; 12. Second transmission gear; 13. L-shaped support plate; 14. Drive motor; 15. Transmission shaft; 16. Transmission ring; 17. First adjusting gear; 18. Second adjusting gear; 19. Extension plate; 20. Electric telescopic rod; 21. Connecting plate; 22. Limiting slide rod; 23. Connecting rod; 24. Connecting ring; 25. Temperature detector; 26. Stirring shaft; 27. Transmission straight boss; 28. Transmission straight groove. DETAILED DESCRIPTION

[0023] The following will be combined with the 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.

[0024] See also Figure 1-4The utility model provides a technical solution for a fermentation tank for producing polyglycolic acid: it includes a fermentation tank body 1, a sealed top cover 2 is fixedly installed on the top of the fermentation tank body 1, and a feed pipe 3 and an exhaust pipe 4 are fixedly connected to the front and rear sides of the upper end of the sealed top cover 2, so that the polyglycolic acid raw materials required for fermentation are discharged into the fermentation tank body 1 through the feed pipe 3, and the interior of the fermentation tank body 1 is exhausted through the exhaust pipe 4. A discharge pipe 5 is fixedly connected to the bottom of the fermentation tank body 1, and a switch valve is fixedly installed at the lower end of the discharge pipe 5, so that the polyglycolic acid raw materials in the fermentation tank body 1 are discharged outward through the discharge pipe 5. A constant temperature chamber 6 is fixedly installed at the outer end of the fermentation tank body 1, and a constant temperature tube 7 is fixedly installed inside the constant temperature chamber 6. The constant temperature tube 7 is spirally distributed on the outer curved surface of the fermentation tank body 1. The upper and lower ends of the constant temperature tube 7 are fixedly connected to the outer sides thereof with a water inlet pipe 8 and a water outlet pipe 9, respectively. The temperature-controlled water is discharged into the interior of the constant temperature tube 7 through the water inlet pipe 8, and the temperature-controlled water inside the constant temperature tube 7 is discharged through the water outlet pipe 9, so that the temperature-controlled water flows and circulates inside the constant temperature tube 7. A temperature detector 25 is fixedly installed on the outer side of the lower end of the fermentation tank body 1, so that the temperature of the polyglycolic acid raw material inside the fermentation tank body 1 is detected by the temperature detector 25.

[0025] The middle part of the upper end of the sealing top cover 2 is rotatably connected with a stirring shaft 26 through a rotating shaft. The outer curved surface of the lower end of the stirring shaft 26 is fixedly installed with a stirring blade 10 for stirring and mixing the inside of the fermentation tank body 1. There are several stirring blades 10, which are staggered and symmetrically distributed from top to bottom according to the outer curved surface of the lower end of the stirring shaft 26. The outer curved surface of the upper end of the stirring shaft 26 is fixedly installed with a first transmission gear 11 and a second transmission gear 12 from top to bottom. The upper side end of the sealing top cover 2 is fixedly installed with an L-shaped support plate 13. The upper end of the L-shaped support plate 13 A drive motor 14 is fixedly installed, and the transmission shaft portion at the lower end of the drive motor 14 passes through the upper end of the L-shaped support plate 13 and is fixedly installed with a transmission shaft 15, and the transmission shaft 15 is rotatably connected to the upper end surface of the sealing top cover 2 through a rotating shaft, and the outer curved surface in the middle of the transmission shaft 15 is fitted with a transmission ring 16 for active connection, and a transmission straight boss 27 is provided at the side end of the transmission shaft 15, and a transmission straight groove 28 is provided on the inner wall of the transmission ring 16, and the transmission straight boss 27 is fitted and movably connected to the inner wall of the transmission straight groove 28, so that the transmission shaft 15 cooperates with the transmission straight boss 27 The transmission straight groove 28 transmits the transmission ring 16. The outer curved surfaces of the upper and lower ends of the transmission ring 16 are respectively fixed with the first adjusting gear 17 and the second adjusting gear 18, and the first adjusting gear 17 is meshed with the first transmission gear 11. The second adjusting gear 18 and the outer tooth portion of the second transmission gear 12 match each other. An extension plate 19 is fixedly installed on the rear side of the upper end of the L-shaped support plate 13. An electric telescopic rod 20 is fixedly installed through the middle of the extension plate 19, and the electric telescopic rod 20 is adapted to be equipped with a timing controller. The lower end of the electric telescopic rod 20 is telescopic. A connecting plate 21 is partially fixedly installed, and limiting slide bars 22 are fixedly installed on both sides of the upper end of the connecting plate 21, and there are two limiting slide bars 22, which are symmetrically distributed on both sides of the upper end of the connecting plate 21. The upper ends of the limiting slide bars 22 are penetrated and movably connected to both sides of the extension plate 19, so that the connecting plate 21 is limited in vertical linear movement by the limiting slide bars 22. A connecting rod 23 is fixedly installed on the side end of the connecting plate 21, and a connecting ring 24 is fixedly installed on the side end of the connecting rod 23, and the transmission ring 16 is rotatably connected to the inner wall of the middle part of the connecting ring 24 through a rotating shaft.

[0026] Working principle: When in use, the utility model discharges the polyglycolic acid raw material required for fermentation into the fermentation tank body 1 through the feed pipe 3 for fermentation. When the polyglycolic acid raw material is discharged into the fermentation tank body 1 for fermentation, the temperature-controlled water is discharged into the constant temperature pipe 7 through the water inlet pipe 8, and the temperature-controlled water in the constant temperature pipe 7 is discharged through the water outlet pipe 9, so that the temperature-controlled water flows and circulates inside the constant temperature pipe 7. When the temperature-controlled water flows and circulates inside the constant temperature pipe 7, the temperature of the fermentation tank body 1 is adjusted by the temperature-controlled water, so that the polyglycolic acid raw material inside the fermentation tank body 1 is maintained at the required fermentation temperature, and the temperature of the polyglycolic acid raw material inside the fermentation tank body 1 is detected by the temperature detector 25, and the interior of the fermentation tank body 1 is exhausted through the exhaust pipe 4;

[0027] By controlling and turning on the drive motor 14, when the drive motor 14 is turned on, the transmission shaft 15 is driven to rotate. When the transmission shaft 15 rotates, the transmission straight boss 27 cooperates with the transmission straight groove 28 to drive the transmission ring 16 to rotate. When the transmission ring 16 rotates, it drives the first adjustment gear 17 and the second adjustment gear 18 to rotate. When the first adjustment gear 17 rotates, it engages and drives the first transmission gear 11 to rotate. When the first transmission gear 11 rotates, it drives the stirring shaft 26 to rotate. When the stirring shaft 26 rotates, it drives the stirring blade 10 to stir and mix the polyglycolic acid raw material inside the fermentation tank body 1, so that the polyglycolic acid raw material is fully mixed and fermented.

[0028] After the polyglycolic acid raw material inside the fermentation tank body 1 is stirred and mixed for a certain period of time, the timing controller controls the electric telescopic rod 20 to be extended. When the electric telescopic rod 20 is extended, it drives the connecting plate 21 to move linearly downward. When the connecting plate 21 moves linearly downward, it drives the connecting rod 23 to move linearly downward. When the connecting rod 23 moves linearly downward, it drives the connecting ring 24 to move linearly downward. When the connecting ring 24 moves linearly downward, it drives the transmission ring 16 to move linearly downward. When the transmission ring 16 moves linearly downward, it drives the first adjusting gear 17 and the second adjusting gear 18 moves linearly downward. When the first adjusting gear 17 and the second adjusting gear 18 move linearly downward, the meshing connection between the first adjusting gear 17 and the first transmission gear 11 will be released, and at the same time, the second adjusting gear 18 will be meshed with the second transmission gear 12, thereby continuing to drive the stirring shaft 26 to rotate through the second transmission gear 12, so that the rotation frequency of the stirring blade 10 is changed, thereby achieving stirring and mixing of the polyglycolic acid raw material inside the fermentation tank body 1, and the stirring frequency of the stirring blade 10 can be adjusted to meet the stirring and mixing requirements of the polyglycolic acid at different fermentation times.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fermentation tank for producing polyglycolic acid, characterized in that: It comprises a fermentation tank body (1), a sealing top cover (2) is fixedly mounted on the top of the fermentation tank body (1), and a feed pipe (3) and an exhaust pipe (4) are fixedly connected to the front and rear sides of the upper end of the sealing top cover (2); The middle part of the upper end of the sealing top cover (2) is rotatably connected to a stirring shaft (26) through a rotating shaft, and the outer curved surface of the lower end of the stirring shaft (26) is fixedly installed with a stirring blade (10) for stirring and mixing the inside of the fermentation tank body (1), and the outer curved surface of the upper end of the stirring shaft (26) is fixedly installed with a first transmission gear (11) and a second transmission gear (12) in sequence from top to bottom. The upper side end of the sealing top cover (2) is fixedly installed with an L-shaped support plate (13), and the upper end of the L-shaped support plate (13) is fixedly installed with a driving motor (14), and the transmission shaft portion of the lower end of the driving motor (14) passes through the upper end of the L-shaped support plate (13) and is fixedly installed with a transmission shaft (15), and the outer curved surface of the middle part of the transmission shaft (15) is movably connected with a transmission ring (1 6), a transmission straight boss (27) is provided at the side end of the transmission shaft (15), a transmission straight groove (28) is provided on the inner wall of the transmission ring (16), a first adjustment gear (17) and a second adjustment gear (18) are fixedly mounted on the outer curved surfaces of the upper and lower ends of the transmission ring (16), an extension plate (19) is fixedly mounted on the rear side of the upper end of the L-shaped support plate (13), an electric telescopic rod (20) is fixedly mounted through the middle of the extension plate (19), a connecting plate (21) is fixedly mounted on the telescopic portion of the lower end of the electric telescopic rod (20), a limiting slide rod (22) is fixedly mounted on both sides of the upper end of the connecting plate (21), a connecting rod (23) is fixedly mounted on the side end of the connecting plate (21), and a connecting ring (24) is fixedly mounted on the side end of the connecting rod (23).

2. The fermentation tank for producing polyglycolic acid according to claim 1, characterized in that: The bottom of the fermentation tank body (1) is fixedly connected to a discharge pipe (5), and a switch valve is fixedly installed at the lower end of the discharge pipe (5).

3. The fermentation tank for producing polyglycolic acid according to claim 2, characterized in that: A constant temperature chamber (6) is fixedly installed at the outer end of the fermentation tank body (1), a constant temperature tube (7) is fixedly installed inside the constant temperature chamber (6), and the constant temperature tube (7) is spirally distributed on the outer curved surface of the fermentation tank body (1), and the outer sides of the upper and lower ends of the constant temperature tube (7) are fixedly connected to a water inlet pipe (8) and a water outlet pipe (9), respectively. A temperature detector (25) is fixedly installed through the outer side of the lower end of the fermentation tank body (1).

4. The fermentation tank for producing polyglycolic acid according to claim 3, characterized in that: There are a plurality of stirring blades (10), which are staggered and symmetrically distributed from top to bottom along the outer curved surface of the lower end of the stirring shaft (26).

5. The fermentation tank for producing polyglycolic acid according to claim 4, characterized in that: The transmission shaft (15) is rotatably connected to the upper end surface of the sealing top cover (2) via a rotating shaft, and the transmission straight boss (27) is movably connected to the inner wall of the transmission straight groove (28).

6. The fermentation tank for producing polyglycolic acid according to claim 5, characterized in that: The first adjusting gear (17) and the first transmission gear (11) are meshed and connected with each other, and the second adjusting gear (18) and the outer tooth portion of the second transmission gear (12) are matched and fitted with each other.

7. The fermentation tank for producing polyglycolic acid according to claim 6, characterized in that: The electric telescopic rod (20) is adapted to be equipped with a timing controller. There are two limit slide bars (22), which are symmetrically distributed on both sides of the upper end of the connecting plate (21). The upper ends of the limit slide bars (22) are connected to both sides of the extension plate (19) through a fitting connection. The transmission ring (16) is connected to the inner wall of the middle part of the connecting ring (24) through a rotating shaft.

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