Poly L-lactic acid microsphere emulsifying device

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) microsphere emulsifying device which comprises a first stirring shaft, a first driving motor, a belt pulley, a second stirring shaft, a third stirring shaft, a circular plate, a second driving motor and a third driving motor, a belt pulley drives a first stirring shaft to rotate, so that a circular plate rotates, and the circular plate rotates to drive a second stirring shaft and a third stirring shaft to rotate along the inner wall of the stirring tank, so that first bristles of a first scraping plate and second bristles of a second scraping plate of the second stirring shaft and the third stirring shaft scrape the inner wall of the stirring tank; meanwhile, the second stirring shaft and the third stirring shaft rotate automatically, so that the materials on the inner wall of the stirring tank are stirred more uniformly and fully, and the materials on the inner wall are scraped and materials near the inner wall are stirred through a scraper, so that the stirring efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of preparing left-handed poly (lactic acid) microspheres, in particular to a poly (L-lactic acid) microsphere emulsifying device. Background Art

[0002] The Chinese patent with authorization announcement number CN202120832732.2 discloses an emulsifying device for left-handed polylactic acid microspheres, which specifically discloses that the first stirring shaft and the second first stirring shaft are driven by a first rotating motor and a second rotating motor respectively; a square stirring frame is provided on the first stirring shaft, and a first airbag that fits the inner wall of the upper warehouse body is sleeved on the side wall of the stirring frame away from the first stirring shaft, and a mounting rod is provided at the bottom of the second first stirring shaft in a horizontal direction, and an inclined rod is provided at the end of the mounting rod away from the second first stirring shaft along the inclined direction of the side wall of the lower warehouse body. The inclined rod is provided with a second airbag which is in contact with the inner wall of the lower bin body. This patent can remove the material on the inner wall very well. However, during the stirring process of the reaction bin, due to the high viscosity of the material, the rotation speed of the first stirring shaft must be fast to stir evenly, so that the first airbag and the second airbag rub against the inner wall under high-speed stirring. When the friction is too great, the first airbag and the second airbag will rupture, resulting in the inability to scrape the inner wall, thereby reducing the stirring efficiency. Therefore, there is an urgent need for a poly (L-lactic acid) microsphere emulsifier that can efficiently and stably scrape the inner wall, thereby improving the stirring efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a poly (L-lactic acid) microsphere emulsifying device, which can efficiently and stably scrape the inner wall, thereby improving the stirring efficiency.

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

[0005] A stirring tank, the stirring tank comprises an upper part and a lower part, the upper part is cylindrical, the lower part is conical, and an opening is provided at the upper part of the stirring tank;

[0006] A first stirring shaft, the first stirring shaft is coaxially rotatably connected to the stirring tank, a plurality of stirring rods are arranged on the outer wall of the first stirring shaft, the plurality of stirring rods are arranged in a circular array along the axial direction of the first stirring shaft, and two adjacent stirring rods are arranged in a staggered manner;

[0007] A first driving motor, the first driving motor is drivingly connected to the first stirring shaft via a pulley;

[0008] A circular plate, the circular plate is connected to the outer wall of the first stirring shaft, the circular plate is connected to the inner wall of the opening through the first bearing seat, a first through hole and a second through hole are provided on the circular plate, and the first through hole and the second through hole are symmetrically arranged with respect to the axis of the first stirring shaft;

[0009] A second bearing seat, an outer ring of the second bearing seat is connected to the inner wall of the first through hole;

[0010] a second stirring shaft, one end of the second stirring shaft is connected to the inner ring of the second bearing, the second stirring shaft is parallel to the first stirring shaft, the second stirring shaft is provided with two first scrapers symmetrical with the axis of the second stirring shaft, and the first scrapers are provided with first bristles;

[0011] A second driving motor, the second driving motor is connected to the disc, and an output shaft of the second driving motor passes through the first through hole and is transmission-connected to the second stirring shaft;

[0012] During the rotation of the second stirring shaft, the first bristles contact the inner wall of the stirring tank;

[0013] a third bearing seat, an outer ring of the third bearing seat being connected to an inner wall of the second through hole;

[0014] a third stirring shaft, one end of which is connected to the inner ring of the third bearing seat, the third stirring shaft is parallel to the first stirring shaft, the third stirring shaft is provided with two second scrapers stacked in the axial direction of the third stirring shaft, and the second scrapers are provided with second bristles;

[0015] A third driving motor, the third driving motor is connected to the disc, and an output shaft of the third driving motor passes through the second through hole and is transmission-connected to the third stirring shaft;

[0016] During the rotation of the third stirring shaft, the second brush bristles contact the inner wall of the stirring tank.

[0017] Furthermore, a cavity is provided in the first stirring shaft, and the rotating shaft is coaxially rotatably connected in the cavity, the fourth drive motor is transmission-connected to the rotating shaft, and the fourth drive motor rotates in the opposite direction to the first drive motor. A first horizontal plate and a second horizontal plate are provided below the rotating shaft, and the first horizontal plate and the second horizontal plate are located below the first stirring shaft. The first horizontal plate is connected to a first inclined plate at one end of the first horizontal plate close to the inner wall of the stirring tank, and the first inclined plate abuts against the inner wall of the lower part of the stirring tank, and the second horizontal plate is connected to a second inclined plate at one end of the second horizontal plate close to the inner wall of the stirring tank, and the second inclined plate and the first inclined plate are symmetrically arranged with respect to the axial direction of the rotating shaft, and the second inclined plate abuts against the inner wall of the lower part of the stirring tank.

[0018] Furthermore, a first protective shell is provided on the circular plate, the second driving motor is located in the first protective shell, a second protective shell is provided on the circular plate, and the third driving motor is located in the second protective shell.

[0019] Furthermore, the first bristles and the second bristles may be made of nylon.

[0020] Furthermore, the poly (L-lactic acid) microsphere emulsification device also includes a first connecting plate and a second connecting plate, the first connecting plate is connected to the lower part of the first stirring shaft, and the other end of the first connecting plate is connected to the lower part of the second stirring shaft through a fifth bearing seat, the second connecting plate is connected to the lower part of the first stirring shaft, and the other end of the second connecting plate is connected to the lower part of the first stirring shaft through a fifth bearing seat.

[0021] Furthermore, a feed port is provided on the circular plate.

[0022] The beneficial effect of the utility model is that, compared with the prior art, the inner wall can be scraped efficiently and stably, thereby improving the stirring efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model discloses a poly (L-lactic acid) microsphere emulsifying device according to a specific embodiment of the present invention.

[0024] Description of symbols

[0025] 1. Mixing tank; 11. Opening;

[0026] 2. first stirring shaft; 21. stirring rod; 22. cavity;

[0027] 3. First drive motor; 31. Pulley;

[0028] 4. circular plate; 41. second drive motor; 42. third drive motor; 43. feed port; 44. first protective shell; 45. second protective shell;

[0029] 5. The first bearing seat;

[0030] 6. Second bearing seat;

[0031] 7. second stirring shaft; 71. first scraper; 72. first brush;

[0032] 8. The third bearing seat;

[0033] 9. third stirring shaft; 91. second scraper; 92. second brush;

[0034] 10. Fourth drive motor;

[0035] 101, first horizontal plate; 1011, first inclined plate;

[0036] 102, second horizontal plate; 1021, second inclined plate;

[0037] 103. A first connecting plate;

[0038] 104. A second connecting plate;

[0039] 105. Fifth bearing seat. DETAILED DESCRIPTION

[0040] 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.

[0041] Please refer to Figure 1 , a poly (L-lactic acid) microsphere emulsifying device, comprising:

[0042] A stirring tank 1, the stirring tank 1 comprises an upper part and a lower part, the upper part is cylindrical, the lower part is conical, and an opening 11 is provided at the upper part of the stirring tank 1;

[0043] A first stirring shaft 2, the first stirring shaft 2 is coaxially rotatably connected to the stirring tank 1, a plurality of stirring rods 21 are arranged on the outer wall of the first stirring shaft 2, the plurality of stirring rods 21 are arranged in a circular array along the axial direction of the first stirring shaft 2, and two adjacent stirring rods 21 are arranged in a staggered manner;

[0044] A first drive motor 3, the first drive motor 3 is drivingly connected to the first stirring shaft 2 via a pulley 31;

[0045] The circular plate 4 is connected to the outer wall of the first stirring shaft 2, and the circular plate 4 is connected to the inner wall of the opening 11 through the first bearing seat 5. The circular plate 4 is provided with a first through hole and a second through hole, and the first through hole and the second through hole are symmetrically arranged with respect to the axis of the first stirring shaft 2;

[0046] A second bearing seat 6, the outer ring of the second bearing seat 6 is connected to the inner wall of the first through hole;

[0047] a second stirring shaft 7, one end of which is connected to the inner ring of the second bearing, the second stirring shaft 7 is parallel to the first stirring shaft 2, the second stirring shaft 7 is provided with two first scrapers 71 symmetrical with the axis of the second stirring shaft 7, and the first scrapers 71 are provided with first bristles 72;

[0048] A second driving motor 41, the second driving motor 41 is connected to the disc, and an output shaft of the second driving motor 41 passes through the first through hole and is transmission-connected to the second stirring shaft 7;

[0049] During the rotation of the second stirring shaft 7, the first bristles 72 contact the inner wall of the stirring tank 1;

[0050] a third bearing seat 8, the outer ring of the third bearing seat 8 being connected to the inner wall of the second through hole;

[0051] A third stirring shaft 9, one end of which is connected to the inner ring of the third bearing seat 8, the third stirring shaft 9 is parallel to the first stirring shaft 2, the third stirring shaft 9 is provided with two second scrapers 91 stacked in the axial direction of the third stirring shaft 9, and the second scrapers 91 are provided with second bristles 92;

[0052] A third driving motor 42, the third driving motor 42 is connected to the disc, and an output shaft of the third driving motor 42 passes through the second through hole and is transmission-connected to the third stirring shaft 9;

[0053] During the rotation of the third stirring shaft 9 , the second brush bristles 92 contact the inner wall of the stirring tank 1 .

[0054] In the above embodiment, the first drive motor 3 is turned on, and the material in the stirring tank 1 is stirred by the staggered stirring rods 21. After stirring for a period of time, the second drive motor 41 and the first drive motor 3 are turned on, so that the second stirring shaft 7 and the first stirring shaft 2 start to rotate, and the rotation of the first stirring shaft 2 drives the circular plate 4 to rotate, so that the second stirring shaft 7 and the first stirring shaft 2 rotate along the inner wall of the stirring tank 1, and the first scraper 71 and the first bristles 72 of the second stirring shaft 7, and the second scraper 91 and the second bristles 92 of the first stirring shaft 2 are used to scrape the material stuck to the inner wall of the stirring tank 1. At the same time, the second stirring shaft 7 and the first stirring shaft 2 rotate, so that the first scraper 71 and the second scraper 91 can stir the material near the inner wall of the stirring tank 1, so that the material on the inner wall is scraped off and the material near the inner wall is stirred by the scraper, thereby improving the stirring efficiency of the stirring tank 1. Compared with the prior art, the inner wall can be scraped efficiently and stably, thereby improving the stirring efficiency.

[0055] As an optional embodiment, a cavity 22 is provided in the first stirring shaft 2, and the rotating shaft is coaxially rotatably connected in the cavity 22. The fourth drive motor 10 is transmission-connected to the rotating shaft, and the fourth drive motor 10 rotates in opposite directions to the first drive motor 3. A first transverse plate 101 and a second transverse plate 102 are provided below the rotating shaft. The first transverse plate 101 and the second transverse plate 102 are located below the first stirring shaft 2. The end of the first transverse plate 101 close to the inner wall of the stirring tank 1 is connected to a first inclined plate 1011, and the first inclined plate 1011 abuts against the inner wall of the lower part of the stirring tank 1. The end of the second transverse plate 102 close to the inner wall of the stirring tank 1 is connected to a second inclined plate 1021, and the second inclined plate 1021 and the first inclined plate 1011 are symmetrically arranged with respect to the axial direction of the rotating shaft, and the second inclined plate 1021 abuts against the inner wall of the lower part of the stirring tank 1.

[0056] In the above embodiment, the outer wall of the rotating shaft is connected to the inner wall of the first stirring shaft 2 through the fourth bearing seat, the fourth driving motor 10 is turned on to drive the rotating shaft to rotate, the rotating shaft drives the first horizontal plate 101 and the second horizontal plate 102 to rotate, the first horizontal plate 101 and the second horizontal plate 102 drive the first inclined plate 1011 and the second inclined plate 1021 to rotate, so that the first inclined plate 1011 and the second inclined plate 1021 scrape the inner wall of the lower part of the stirring tank 1, and at the same time, the first horizontal plate 101 and the second horizontal plate 102 rotate in the opposite direction to the rotation direction of the first stirring shaft 2, forming up and down turbulence, so that the material in the stirring tank 1 can be better stirred and the stirring efficiency can be improved.

[0057] As an optional implementation, a first protective shell 44 is provided on the circular plate 4 , the second drive motor 41 is located in the first protective shell 44 , a second protective shell 45 is provided on the circular plate 4 , and the third drive motor 42 is located in the second protective shell 45 .

[0058] In the above embodiment, by providing the first protective shell 44 and the second protective shell 45 , the second drive motor 41 and the first drive motor 3 are protected, thereby extending their service life.

[0059] As an optional implementation, the material of the bristles can be nylon bristles.

[0060] As an optional embodiment, the poly (L-lactic acid) microsphere emulsification device also includes a first connecting plate 103 and a second connecting plate 104, the first connecting plate 103 is connected to the lower part of the first stirring shaft 2, and the other end of the first connecting plate 103 is connected to the lower part of the second stirring shaft 7 through the fifth bearing seat 105, the second connecting plate 104 is connected to the lower part of the first stirring shaft 2, and the other end of the second connecting plate 104 is connected to the lower part of the first stirring shaft 2 through the fifth bearing seat 105.

[0061] In the above embodiment, the second stirring shaft 7 is connected to the first stirring shaft 2 through the first connecting plate 103, and the first stirring shaft 2 is connected to the first stirring shaft 2 through the second connecting plate 104, so that the second stirring shaft 7 and the first stirring shaft 2 can rotate stably without deviation.

[0062] As an optional implementation, a feed port 43 is provided on the circular plate 4 .

[0063] 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 poly (L-lactic acid) microsphere emulsification device, characterized in that: include: A stirring tank, the stirring tank comprises an upper part and a lower part, the upper part is cylindrical, the lower part is conical, and an opening is provided at the upper part of the stirring tank; A first stirring shaft, the first stirring shaft is coaxially rotatably connected to the stirring tank, a plurality of stirring rods are arranged on the outer wall of the first stirring shaft, the plurality of stirring rods are arranged in a circular array along the axial direction of the first stirring shaft, and two adjacent stirring rods are arranged in a staggered manner; A first driving motor, the first driving motor is drivingly connected to the first stirring shaft via a pulley; A circular plate, the circular plate is connected to the outer wall of the first stirring shaft, the circular plate is connected to the inner wall of the opening through the first bearing seat, a first through hole and a second through hole are provided on the circular plate, and the first through hole and the second through hole are symmetrically arranged with respect to the axis of the first stirring shaft; A second bearing seat, an outer ring of the second bearing seat is connected to the inner wall of the first through hole; a second stirring shaft, one end of the second stirring shaft is connected to the inner ring of the second bearing, the second stirring shaft is parallel to the first stirring shaft, the second stirring shaft is provided with two first scrapers symmetrical with the axis of the second stirring shaft, and the first scrapers are provided with first bristles; A second driving motor, the second driving motor is connected to the disc, and an output shaft of the second driving motor passes through the first through hole and is transmission-connected to the second stirring shaft; During the rotation of the second stirring shaft, the first brush bristles contact the inner wall of the stirring tank; A third bearing seat, an outer ring of the third bearing seat is connected to the inner wall of the second through hole; a third stirring shaft, one end of which is connected to the inner ring of the third bearing seat, the third stirring shaft is parallel to the first stirring shaft, the third stirring shaft is provided with two second scrapers stacked in the axial direction of the third stirring shaft, and the second scrapers are provided with second bristles; A third driving motor, the third driving motor is connected to the disc, and an output shaft of the third driving motor passes through the second through hole and is drivingly connected to the third stirring shaft; During the rotation of the third stirring shaft, the second brush bristles contact the inner wall of the stirring tank.

2. The poly (L-lactic acid) microsphere emulsifying device according to claim 1, characterized in that: A cavity is provided in the first stirring shaft, and the rotating shaft is coaxially rotatably connected in the cavity. The fourth drive motor is transmission-connected to the rotating shaft, and the fourth drive motor rotates in the opposite direction to the first drive motor. A first transverse plate and a second transverse plate are provided below the rotating shaft, and the first transverse plate and the second transverse plate are located below the first stirring shaft. The first transverse plate is connected to a first inclined plate at one end close to the inner wall of the stirring tank, and the first inclined plate abuts against the inner wall of the lower part of the stirring tank, and the second transverse plate is connected to a second inclined plate at one end close to the inner wall of the stirring tank, and the second inclined plate and the first inclined plate are symmetrically arranged with respect to the axial direction of the rotating shaft, and the second inclined plate abuts against the inner wall of the lower part of the stirring tank.

3. The poly (L-lactic acid) microsphere emulsifying device according to claim 1, characterized in that: A first protective shell is arranged on the circular plate, and the second driving motor is located in the first protective shell. A second protective shell is arranged on the circular plate, and the third driving motor is located in the second protective shell.

4. The poly (L-lactic acid) microsphere emulsifying device according to claim 1, characterized in that: The first bristles and the second bristles may be made of nylon.

5. The poly (L-lactic acid) microsphere emulsifying device according to claim 1, characterized in that: The poly (L-lactic acid) microsphere emulsifying device also includes a first connecting plate and a second connecting plate, wherein the first connecting plate is connected to the lower part of the first stirring shaft, and the other end of the first connecting plate is connected to the lower part of the second stirring shaft through a fifth bearing seat, and the second connecting plate is connected to the lower part of the first stirring shaft, and the other end of the second connecting plate is connected to the lower part of the first stirring shaft through the fifth bearing seat.

6. The poly (L-lactic acid) microsphere emulsifying device according to claim 1, characterized in that: A feeding port is arranged on the circular plate.

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