Controllable polymerization device for degradable polyester material

Abstract

The utility model relates to the field of production of degradable polyester materials, in particular to a controllable polymerization device for degradable polyester materials, which comprises a box body and a rotating wheel, the rotating wheel is arranged in the box body, a retainer is arranged at the upper end of the rotating wheel, through holes I distributed in an annular array are formed in the upper half area of the rotating wheel, and through holes II distributed in an annular array are formed in the lower half area of the rotating wheel. A water pump is arranged on the outer wall of one side of the box body, a conveying pipe is arranged in the area, located in the box body, of the water pump, a negative pressure machine is arranged on the outer wall of the other side of the box body, a heater is arranged at the lower end of the negative pressure machine, and a rotary valve is arranged at the bottom of the box body. According to the device, the functions of conveniently adding materials and efficiently separating solid and liquid particles can be utilized, and the problem that an existing degradable polyester material polymerization device lacks the effects of efficiently and rapidly separating solid and liquid substances and controlling feeding adjustment is solved.

Description

Technical Field

[0001] This utility model relates to the field of biodegradable polyester material production, and in particular to a controllable polymerization device for biodegradable polyester materials. Background Technology

[0002] Polyhydroxycarboxylic acid esters (PHAS) are a class of biocompatible and biodegradable polymers with hydroxycarboxylic acid esters as their structural cycling units. They are mainly used in pharmaceuticals such as drug capsules, surgical sutures, and artificial bones, and as a substitute for non-biodegradable polyolefin plastics.

[0003] A search revealed patent publication number CN101205297, which discloses an enzyme-catalyzed method for preparing polyester. This method uses β-hydroxycarboxylic acid esters as reactants and bio-enzymes such as No-vozyme 435, Lipase from thermomyces lanuginosus, PPL, or Lipase PS as catalysts to prepare polyester under very mild conditions. This invention utilizes a solvent-free reaction system, exhibits high bio-enzyme stability, and allows for multiple batches of continuous catalytic reactions. The use of scalable chemical monomers and engineered bio-enzymes as catalysts significantly reduces product costs.

[0004] While existing technologies can achieve certain reactions of biodegradable polyester materials, they suffer from drawbacks: they lack efficient and rapid separation of solid and liquid substances and controllable feed adjustment. In view of this, we propose a controllable polymerization device for biodegradable polyester materials, which solves the above problems. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background art by proposing a controllable polymerization device for biodegradable polyester materials.

[0006] The technical solution of this utility model: A controllable polymerization device for biodegradable polyester materials, comprising a box and a rotating wheel, wherein the rotating wheel is provided inside the box, a retainer is provided at the upper end of the rotating wheel, and a series of through holes arranged in a ring array are provided in the upper half of the rotating wheel, a water pump is provided on one outer wall of the box, a transmission pipe is provided for the water pump in the inner area of ​​the box, a negative pressure machine is provided on the other outer wall of the box, a heater is provided at the lower end of the negative pressure machine, and a rotary valve is provided at the bottom of the box;

[0007] When using this device, the substances to be reacted can be added into the chamber through inlet 1. The substances will fall directly into the rotor. Then, catalytic enzymes can be added periodically through inlet 2. Under the control of negative pressure by the negative pressure machine and temperature by the heater, the motor starts to drive the rotor to rotate, achieving a centrifugal stirring effect on the materials. Initially, the rotation speed is slow during the reaction stage, only serving to achieve uniform mixing. After a certain period of time, sediment will appear in the solution. At this time, the motor speed can be adjusted to increase the rotor speed. Under the action of centrifugal force, the liquid will flow out from the through hole at the top of the rotor and fall into the bottom of the chamber (located outside the rotor). Then, the particles will be retained inside the rotor by the action of the limiting ring. After the centrifugation is completed, the rotary valve is opened, and the solid sediment particles are discharged from the outlet. The liquid solvent can be discharged and collected from the transfer pipe with the help of the water pump. This device has the function of convenient and efficient separation of packing materials for the polymerization reaction of biodegradable polyester materials, and has high practicality.

[0008] Preferably, the rotary valve has a discharge port at its lower end, and the discharge port is designed to be inclined. The discharge port is used to discharge solid substances. The inclined design of the discharge port facilitates the smooth discharge of solid sediment and reduces the risk of blockage.

[0009] Preferably, the upper part of the box is provided with a top cover, one side of the top cover is provided with a feed inlet, and the other side of the feed inlet is provided with a second feed inlet. The two feed inlets can be used to add reactants and catalysts respectively, avoiding premature reaction caused by premixing and improving the controllability of the reaction.

[0010] Preferably, a motor is provided in the middle of the upper end of the box, and a pressure detector is provided on one side of the motor. The output shaft of the motor is fixedly connected to the rotation center of the upper end of the fixed frame set inside the wheel. The motor drives the wheel to achieve precise speed regulation and adapt to different needs of mixing and centrifugal separation.

[0011] Preferably, the lower end of the wheel is provided with a sealed bearing in contact with the housing, the surface of the cage is provided with two through holes arranged in a ring array, and the inner ring of the cage is provided with a limiting ring. The sealed bearing reduces the risk of friction and leakage; the limiting ring works in concert.

[0012] Preferably, a controller is provided on one outer wall of the chamber, and a bracket is provided at the lower end of the chamber. A base is fixed at the lower end of the bracket. The controller integrates and regulates temperature, rotation speed and negative pressure parameters to achieve automated operation. The negative pressure of the reaction is controlled at 70 ng / g, and the temperature is controlled at around 50°C.

[0013] Preferably, the impeller has an inverted V-shaped design, and the gap between the transmission pipe and the bottom of the chamber is two centimeters. The inverted V-shaped impeller promotes the rapid ejection of liquid during centrifugal separation and reduces residue.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] I. This utility model achieves efficient polymerization and separation of biodegradable polyester materials through the coordinated design of rotary centrifugal separation, negative pressure control, heating temperature control and automatic control system.

[0016] Second, based on the first beneficial effect, its split-type feed inlet, inclined discharge outlet, and sealing structure optimize the reaction process, while the gas pressure detection and controller improve operational accuracy and safety. The overall structure integrates mixing, reaction, and separation functions, offering advantages such as high production efficiency, high product purity, and convenient operation.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] Figure 1 This is a three-dimensional perspective view of the present invention from a first angle;

[0019] Figure 2 This is a two-dimensional perspective view of the present invention.

[0020] Figure 3 This is a partial cross-sectional view of the present invention;

[0021] Figure 4 This is a schematic diagram of the fixing frame of this utility model;

[0022] Figure 5 This is a partial front view schematic diagram of the present invention;

[0023] Figure 6 For the present utility model Figure 3 Enlarged schematic diagram of structure A in the middle.

[0024] Figure label:

[0025] 1. Housing; 2. Controller; 3. Discharge port; 4. Support; 5. Inlet 1; 6. Water pump; 7. Inlet 2; 8. Motor; 9. Top cover; 10. Air pressure detector; 11. Negative pressure unit; 12. Heater; 13. Rotary wheel; 14. Through hole 1; 15. Cage; 16. Rotary valve; 17. Sealed bearing; 18. Fixing frame; 19. Through hole 2; 20. Transmission pipe; 21. Limiting ring. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual proportions. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0030] Example 1

[0031] Please see Figures 1-6 As shown, this embodiment is a controllable polymerization device for biodegradable polyester materials, including a box 1 and a rotating wheel 13. The rotating wheel 13 is provided inside the box 1. A retainer 15 is provided at the upper end of the rotating wheel 13. The upper half of the rotating wheel 13 is provided with through holes 14 arranged in a ring array. A water pump 6 is provided on one side of the outer wall of the box 1. A transmission pipe 20 is provided in the area inside the box 1 where the water pump 6 is located. A negative pressure machine 11 is provided on the other side of the outer wall of the box 1. A heater 12 is provided at the lower end of the negative pressure machine 11. A rotary valve 16 is provided at the bottom of the box 1.

[0032] When using this device, the substances to be reacted can be added into the chamber 1 through inlet 5. The substances will fall directly into the rotor 13. Then, catalytic enzymes can be added periodically through inlet 7. Under the control of negative pressure by negative pressure machine 11 and temperature by heater 12, motor 8 is started to drive rotor 13 to rotate, achieving centrifugal rotation and stirring effect on the materials. Initially, the rotation speed is slow during the reaction stage, only serving to achieve uniform mixing. After a certain period of time, sediment will appear inside the solution. At this time, the speed of motor 8 can be adjusted to increase the rotation speed of rotor 13. Under the action of centrifugal force, the liquid will flow out from the through hole 14 at the top of rotor 13 and fall into the bottom of chamber 1 (located outside rotor 13). Then, the particles will be kept inside rotor 13 under the action of limiting ring 21. After the centrifugation is completed, the rotary valve 16 is opened, and the solid precipitated particles are discharged from outlet 3. The liquid solvent can be discharged and collected from the transfer pipe 20 in conjunction with water pump 6. This device has a convenient and efficient polymer reaction of biodegradable polyester materials with convenient filler separation and has high practicality.

[0033] Example 2

[0034] Please see Figures 1-6 As shown, this embodiment further includes, based on embodiment 1, a discharge port 3 at the lower end of the rotary valve 16. The discharge port 3 is designed to be inclined and is used to discharge solid materials. The inclined design of the discharge port 3 facilitates the smooth discharge of solid sediment, reduces the risk of blockage, improves discharge efficiency, and ensures the stability of continuous production.

[0035] The top of the box 1 is provided with a top cover 9. On one side of the top cover 9 is a feed inlet 5, and on the other side of the feed inlet 5 is a feed inlet 7. The two feed inlets can be used to add reactants and catalysts respectively, avoiding premature reaction caused by premixing, improving the controllability of the reaction, and facilitating batch feeding to optimize the reaction process.

[0036] A motor 8 is located in the middle of the upper part of the housing 1. A pressure detector 10 is located on one side of the motor 8. The output shaft of the motor 8 is fixedly connected to the rotation center of the upper end of the fixed frame 18 located inside the rotating wheel 13. The motor 8 drives the rotating wheel 13 to achieve precise speed regulation to adapt to different needs of mixing and centrifugal separation. The pressure detector 10 monitors the reaction environment in real time to ensure stable negative pressure conditions and improve reaction safety.

[0037] A sealed bearing 17 is provided at the lower end of the rotor 13 in contact with the housing 1. The surface of the retainer 15 has through holes 19 arranged in a ring array. A limiting ring 21 is provided in the inner ring of the retainer 15. The sealed bearing 17 reduces the risk of friction and leakage. The limiting ring 21 works together to optimize the liquid separation path and fix solid particles, thereby improving the separation effect. The through holes 19 can prevent solid particles from entering the bottom of the housing 1.

[0038] A controller 2 is installed on one side of the outer wall of the chamber 1, and a bracket 4 is installed at the lower end of the chamber 1. A base is fixed at the lower end of the bracket 4. The controller 2 integrates and controls the temperature, speed and negative pressure parameters to realize automated operation. The negative pressure of the reaction is controlled at 70nnGg, and the temperature is controlled at about 50℃. The bracket 4 and the base enhance the stability of the equipment, reduce vibration interference, and ensure the consistency of the reaction.

[0039] The rotor 13 has an inverted V-shaped design, and the gap between the transfer tube 20 and the bottom of the chamber 1 is two centimeters. The inverted V-shaped rotor 13 promotes the rapid ejection of liquid during centrifugation and reduces residue. The gap design of the transfer tube 20 avoids liquid backflow and ensures efficient solvent collection.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A controlled polymerization apparatus for degradable polyester materials comprising a housing (1) and a rotating wheel (13), characterized in that: The housing (1) is equipped with a rotating wheel (13) inside. The upper end of the rotating wheel (13) is equipped with a retainer (15). The upper half of the rotating wheel (13) is equipped with through holes (14) arranged in a ring array. A water pump (6) is provided on one side of the outer wall of the housing (1). The water pump (6) is located in the inner area of ​​the housing (1) and is equipped with a transmission pipe (20). A negative pressure machine (11) is provided on the other side of the outer wall of the housing (1). A heater (12) is provided at the lower end of the negative pressure machine (11). A rotary valve (16) is provided at the bottom of the housing (1).

2. A controlled polymerization apparatus for degradable polyester materials according to claim 1, characterized in that: The rotary valve (16) has a discharge port (3) at its lower end. The discharge port (3) is designed to be inclined and is used to discharge solid substances.

3. A controlled polymerization apparatus for degradable polyester materials as claimed in claim 1, wherein: The box body (1) is provided with a top cover (9) at the upper end, and a feed inlet (5) is provided on one side of the top cover (9), and a feed inlet (7) is provided on one side of the feed inlet (5).

4. A controlled polymerization apparatus for degradable polyester materials according to claim 3, wherein: The upper middle part of the box (1) is provided with a motor (8), and a pressure detector (10) is provided on one side of the motor (8). The output shaft of the motor (8) is fixedly connected to the upper rotation center of the fixed frame (18) set inside the wheel (13).

5. A controlled polymerization apparatus for degradable polyester materials as defined in claim 1, wherein: The lower end of the rotating wheel (13) is provided with a sealed bearing (17) in contact with the housing (1). The surface of the retainer (15) is provided with two through holes (19) arranged in a ring array. The inner ring of the retainer (15) is provided with a limiting ring (21).

6. A controlled polymerization apparatus for degradable polyester materials as defined in claim 1, wherein: A controller (2) is provided on one side of the outer wall of the box (1), and a bracket (4) is provided at the lower end of the box (1). A base is fixed at the lower end of the bracket (4).

7. A controlled polymerization apparatus for degradable polyester materials as defined in claim 1, wherein: The rotating wheel (13) has an inverted V-shaped design, and the gap between the transmission pipe (20) and the bottom of the box (1) is two centimeters.

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