Production device of poly-L-lactic acid composite powder

Abstract

The utility model relates to the technical field of preparation of poly (L-lactic acid) microspheres, in particular to a poly (L-lactic acid) composite powder production device which comprises a first driving motor, a first rotating shaft, a second rotating shaft, a driving mechanism and a transmission mechanism. The driving mechanism drives the second stirring rods to rotate through the transmission mechanism, so that the second stirring rods fully mix and stir materials in the middles of the two adjacent first stirring rods, and unnecessary heat generated by the first stirring rods due to the fact that the rotating speed is too high in order to fully stir and mix the materials in the middles can be avoided. And generation of excessive heat is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of preparing left-handed polylactic acid microspheres, in particular to a production device for poly L-lactic acid composite powder. Background Art

[0002] The Chinese patent with authorization announcement number CN217312943U discloses a left-handed polylactic acid microsphere manufacturing equipment, which specifically discloses that a plurality of first stirring rods are arranged on both sides of the first shaft, a plurality of first through holes are opened inside the plurality of first stirring rods, a connecting block is arranged at the bottom of the first shaft, a second stirring rod is arranged on both sides of the connecting block, and a counterweight block is arranged on one side of the second stirring rod. When stirring in the above patent, the shear force of the first stirring rod near the middle of the first shaft and the shear force of the second stirring rod near the middle of the counterweight block are relatively small. Since the viscosity of the material is high during stirring when preparing left-handed polylactic acid microspheres, the stirring of the first stirring rod near the middle of the first shaft and the second stirring rod near the counterweight block is insufficient. Therefore, in order to fully stir the material in the middle, it is necessary to increase the stirring speed and strength. The increase in the stirring speed will generate too much heat. Long-term operation will not only shorten the life of the equipment, but also the heat generated will easily destroy the material in the stirring tank. Therefore, a production device for poly L-lactic acid composite powder is urgently needed to solve the problem of insufficient stirring in the middle and avoid excessive heat generation. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a production device for poly (L-lactic acid) composite powder, so as to solve the problem of insufficient stirring in the middle part and avoid the generation of excessive heat.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a production device for poly (L-lactic acid) composite powder, comprising:

[0005] Bracket;

[0006] The tank body is connected to the bracket, the top of the tank body is provided with a feed port, the bottom of the tank body is provided with a discharge port, the tank body comprises an upper bin body and a lower bin body, the upper bin body is cylindrical, and the lower bin body is conical;

[0007] A first rotating shaft, wherein a cavity is provided in the first rotating shaft, and the first rotating shaft is coaxially rotatably connected to the tank body;

[0008] A second rotating shaft, the second rotating shaft is coaxially rotatably connected in the cavity, and the second rotating shaft rotates in opposite directions to the first rotating shaft;

[0009] A stirring device, wherein the plurality of stirring devices are arranged in a circumferential array with the first rotating shaft as the axial direction, and the stirring device comprises a plurality of stirring components arranged and distributed along the axial direction of the first rotating shaft;

[0010] The stirring assembly includes a first stirring rod and a second stirring rod, the first stirring rod is rotatably connected to the first rotating shaft, one end of the first stirring rod extends into the first rotating shaft, the first stirring rods are arranged in a circular array along the axial direction of the first rotating shaft, the axial direction of rotation of the first stirring rod is perpendicular to the first rotating shaft, a plurality of second stirring rods are connected to the outer wall of the first stirring rod, and the plurality of second stirring rods are arranged in a circular array along the axial direction of rotation of the first stirring rod;

[0011] A first driving motor, the first driving motor is connected to the bracket, and the first driving motor is drivingly connected to the second rotating shaft;

[0012] A driving mechanism, the driving mechanism is connected to the bracket, and the driving mechanism is used to drive the first rotating shaft to rotate;

[0013] The transmission mechanism drives the first stirring rod to rotate through the transmission mechanism.

[0014] Furthermore, the driving mechanism includes a second driving motor and a pulley. The second driving motor is connected to the bracket, and the second driving motor is drivingly connected to the first rotating shaft through the pulley.

[0015] Furthermore, the transmission mechanism is located in the cavity, and the transmission mechanism includes a first bevel gear and a second bevel gear, the first bevel gear is coaxially connected to the second rotating shaft, the second bevel gear is coaxially connected to the first stirring gear, and the second bevel gear is meshed with the first gear.

[0016] Furthermore, a scraper is provided on the outer wall of the first rotating shaft. The scraper is in an inverted L shape. The scraper is located in the upper storage body of the mixing tank, and the scraper is against the inner wall of the mixing tank.

[0017] Furthermore, a turntable is arranged below the second rotating shaft, the outer wall of the turntable abuts against the inner wall of the lower storage body, and a plurality of through holes are opened on the turntable.

[0018] The beneficial effect of the utility model is that by setting a first driving motor, a first rotating shaft, a second rotating shaft, a driving mechanism and a transmission mechanism, the first driving motor is used to drive the second rotating shaft to rotate, so that the first stirring rod starts to stir the material, and the driving mechanism drives the second stirring rod to rotate through the transmission mechanism, so that the second stirring rod can fully mix and stir the materials in the middle of two adjacent first stirring rods, which can avoid the first stirring rod from generating unnecessary heat due to too fast rotation speed in order to fully stir and mix the middle part. Compared with the prior art, the insufficient stirring in the middle is solved and the generation of excessive heat is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a production device of poly-L-lactic acid composite powder according to a specific embodiment of the utility model;

[0020] Figure 2 for Figure 1Enlarged view of part A.

[0021] Description of symbols

[0022] 1. Bracket;

[0023] 2. Tank body; 21. Feed inlet; 22. Discharge outlet; 23. Upper bin body; 24. Lower bin body;

[0024] 3. first rotating shaft; 31. cavity;

[0025] 4. Second rotating shaft;

[0026] 5. Stirring device;

[0027] 6. stirring assembly; 61. first stirring rod; 62. second stirring rod;

[0028] 7. A first drive motor;

[0029] 8. driving mechanism; 81. second driving motor; 82. pulley;

[0030] 9. Transmission mechanism; 91. First bevel gear; 92. Second bevel gear;

[0031] 10. Scraper;

[0032] 11. Turntable; 111. Through hole. DETAILED DESCRIPTION

[0033] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0034] Please refer to Figure 1 to Figure 2 , a production device for poly (L-lactic acid) composite powder, comprising:

[0035] Bracket 1;

[0036] The tank body 2 is connected to the bracket 1. The top of the tank body 2 is provided with a feed port 21, and the bottom of the tank body 2 is provided with a discharge port 22. The tank body 2 includes an upper bin body 23 and a lower bin body 24. The upper bin body 23 is cylindrical, and the lower bin body 24 is conical.

[0037] A first rotating shaft 3, wherein a cavity 31 is provided in the first rotating shaft 3, and the first rotating shaft 3 is coaxially rotatably connected to the tank body 2;

[0038] A second rotating shaft 4, the second rotating shaft 4 is coaxially rotatably connected in the cavity 31, and the second rotating shaft 4 and the first rotating shaft 3 rotate in opposite directions;

[0039] A stirring device 5, wherein the plurality of stirring devices 5 are arranged in a circumferential array with the first rotating shaft 3 as the axial direction, and the stirring device 5 comprises a plurality of stirring components 6 arranged and distributed along the axial direction of the first rotating shaft 3;

[0040] The stirring assembly 6 includes a first stirring rod 61 and a second stirring rod 62. The first stirring rod 61 is rotatably connected to the first rotating shaft 3. One end of the first stirring rod 61 extends into the first rotating shaft 3. The first stirring rod 61 is arranged in a circular array along the axis of the first rotating shaft 3. The axis of rotation of the first stirring rod 61 is perpendicular to the first rotating shaft 3. A plurality of second stirring rods 62 are connected to the outer wall of the first stirring rod 61. The plurality of second stirring rods 62 are arranged in a circular array along the axis of rotation of the first stirring rod 61.

[0041] A first driving motor 7, the first driving motor 7 is connected to the bracket 1, and the first driving motor 7 is drivingly connected to the second rotating shaft 4;

[0042] A driving mechanism 8, the driving mechanism 8 is connected to the bracket 1, and the driving mechanism 8 is used to drive the first rotating shaft 3 to rotate;

[0043] Transmission mechanism 9, the driving mechanism 8 drives the first stirring rod 61 to rotate through the transmission mechanism 9.

[0044] In the above embodiment, the material is put into the tank body 2 through the feed port 21, and the first drive motor 7 is turned on. The rotation of the first drive motor 7 drives the second rotating shaft 4 to rotate, so that the first stirring rod 61 starts to stir the material. The driving mechanism 8 drives the second stirring rod 62 to rotate through the transmission mechanism 9, so that the second stirring rod 62 can fully mix and stir the materials in the middle of the two adjacent first stirring rods 61, which can avoid the first stirring rod 61 from generating unnecessary heat due to excessive rotation speed in order to fully stir and mix the middle part. Compared with the prior art, the insufficient stirring in the middle is solved and the generation of excessive heat is avoided.

[0045] As an optional implementation, the driving mechanism 8 includes a second driving motor 81 and a pulley 82 . The second driving motor 81 is connected to the bracket 1 , and the second driving motor 81 is transmission-connected to the first rotating shaft 3 via the pulley 82 .

[0046] In the above embodiment, the second drive motor 81 is turned on, and the first rotating shaft 3 is driven to rotate through the pulley 82. The first rotating shaft 3 is connected to the stirring tank through the bearing seat, so that the first rotating shaft 3 rotates, and the stirring tank does not rotate.

[0047] As an optional embodiment, the transmission mechanism 9 is located in the cavity 31, and the transmission mechanism 9 includes a first bevel gear 91 and a second bevel gear 92. The first bevel gear 91 is coaxially connected to the second rotating shaft 4, and the second bevel gear 92 is coaxially connected to the first stirring gear. The second bevel gear 92 is meshed with the first gear.

[0048] In the above embodiment, the second drive motor 81 is turned on, and the second drive motor 81 drives the second rotating shaft 4 to rotate through the pulley 82. The rotation of the second rotating shaft 4 drives the first bevel gear 91 to rotate, and drives the first stirring rod 61 to rotate by engaging with the second gear. The rotation of the first stirring rod 61 allows the materials in the middle of the two adjacent first stirring rods 61 to be fully stirred and mixed.

[0049] As an optional embodiment, a scraper 10 is provided on the outer wall of the first rotating shaft 3. The scraper 10 is in an inverted L shape. The scraper 10 is located in the upper storage body 23 of the mixing tank, and the scraper 10 is against the inner wall of the mixing tank.

[0050] In the above embodiments, since the viscosity of the material is high, the scraper 10 is provided to scrape the material on the inner wall of the mixing tank, thereby improving the utilization rate of the material.

[0051] As an optional implementation, a turntable 11 is disposed below the second rotating shaft 4 , the outer wall of the turntable 11 abuts against the inner wall of the lower storage body 24 , and a plurality of through holes 111 are formed on the turntable 11 .

[0052] In the above embodiment, since the lower bin body 24 is conical, by arranging the turntable 11 and the through hole 111 in the lower bin body 24, the material will move downward under the action of stirring and gravity, and the through hole 111 on the turntable 11 can allow the material to pass faster, further promoting the flow of the material during the stirring process, and ensuring that the material can be mixed more evenly.

[0053] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A production device for poly (L-lactic acid) composite powder, characterized in that: include: Bracket; The tank body is connected to the bracket, the top of the tank body is provided with a feed port, the bottom of the tank body is provided with a discharge port, the tank body comprises an upper bin body and a lower bin body, the upper bin body is cylindrical, and the lower bin body is conical; A first rotating shaft, wherein a cavity is provided in the first rotating shaft, and the first rotating shaft is coaxially rotatably connected to the tank body; A second rotating shaft, the second rotating shaft is coaxially rotatably connected in the cavity, and the second rotating shaft rotates in opposite directions to the first rotating shaft; A stirring device, wherein the plurality of stirring devices are arranged in a circumferential array with the first rotating shaft as the axial direction, and the stirring device comprises a plurality of stirring components arranged and distributed along the axial direction of the first rotating shaft; The stirring assembly includes a first stirring rod and a second stirring rod, the first stirring rod is rotatably connected to the first rotating shaft, one end of the first stirring rod extends into the first rotating shaft, the first stirring rods are arranged in a circular array along the axial direction of the first rotating shaft, the axial direction of rotation of the first stirring rod is perpendicular to the first rotating shaft, a plurality of second stirring rods are connected to the outer wall of the first stirring rod, and the plurality of second stirring rods are arranged in a circular array along the axial direction of rotation of the first stirring rod; A first driving motor, the first driving motor is connected to the bracket, and the first driving motor is drivingly connected to the second rotating shaft; A driving mechanism, the driving mechanism is connected to the bracket, and the driving mechanism is used to drive the first rotating shaft to rotate; The transmission mechanism drives the first stirring rod to rotate through the transmission mechanism.

2. The production device of poly (L-lactic acid) composite powder according to claim 1, characterized in that: The driving mechanism comprises a second driving motor and a pulley. The second driving motor is connected to the bracket, and the second driving motor is drivingly connected to the first rotating shaft through the pulley.

3. The production device of poly (L-lactic acid) composite powder according to claim 2, characterized in that: The transmission mechanism is located in the cavity and comprises a first bevel gear and a second bevel gear. The first bevel gear is coaxially connected to the second rotating shaft, the second bevel gear is coaxially connected to the first stirring gear, and the second bevel gear is meshed with the first gear.

4. The production device of poly (L-lactic acid) composite powder according to claim 1, characterized in that: A scraper is provided on the outer wall of the first rotating shaft. The scraper is in an inverted L shape. The scraper is located in the upper storage body of the mixing tank and abuts against the inner wall of the mixing tank.

5. The production device of poly (L-lactic acid) composite powder according to claim 1, characterized in that: A rotating disk is arranged below the second rotating shaft, the outer wall of the rotating disk abuts against the inner wall of the lower warehouse body, and a plurality of through holes are opened on the rotating disk.

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