Poly-L-lactic acid coarse material leaching device

Abstract

The utility model discloses a poly-L-lactic acid coarse material leaching device, and belongs to the technical field of chemical equipment. According to the structure of the device, a tubular space comprises a large-diameter part located on the rear portion and a small-diameter part located on the front portion, a large-diameter auger and a small-diameter auger form a whole and are located in the tubular space, an input port and a liquid outlet are formed in the upper side and the lower side of the rear portion of the tubular space, and a hole plate is fixed to the liquid outlet; a reducer pipe is connected to the front portion of the small-diameter part, an output port is formed in the front portion of the reducer pipe, and a plurality of sprayers are arranged on the upper side of the tubular space. According to the device, an inclined channel type leaching mode is designed, coarse materials in a tubular channel are leached in the mechanical pushing process, and a leaching solvent automatically flows to a liquid outlet to be discharged. And through the change of the diameter of the auger, a squeezing effect is achieved on the washed coarse material, so that the follow-up washing efficiency is improved. Through the multi-stage series connection use of the cleaning device, a good cleaning effect can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, in particular to a poly (L-lactic acid) coarse material eluting device. Background Art

[0002] Poly (L-lactic acid) is an important biodegradable polymer material. It is non-toxic, non-irritating, biodegradable and absorbable, high in strength, good in plasticity, and easy to process. The degradation cycle is 2 to 12 months. The degradation cycle can also be changed according to the addition of different modifiers. Poly (L-lactic acid) is enzymatically decomposed in the body and eventually forms carbon dioxide and water, which has good biocompatibility. Poly (L-lactic acid) has many uses, mainly in surgical sutures, dentistry, ophthalmology, pharmaceutical controlled release systems, artificial skin, artificial blood vessels, bone and soft tissue defect fillers, bioabsorbable stents and other medical fields. In the synthesis process of poly (L-lactic acid), the crude material produced needs to be eluted with poor solvents such as anhydrous ethanol and ether to remove impurities. At present, the solvent of the ordinary elution mode will remain in the gap of the crude material, affecting the cleaning efficiency of the subsequent elution solvent. Summary of the invention

[0003] The technical problem to be solved by the utility model is that the solvent in the common elution mode will remain in the gap of the coarse material, thus affecting the cleaning efficiency of the subsequent elution solvent.

[0004] In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

[0005] A poly-L-lactic acid coarse material eluting device comprises a tubular space, a small diameter part, a large diameter auger, a small diameter auger, a motor, an input port, a liquid discharge port, an outer sleeve, a protective tube, a reducer, an output port, a sprayer, and a joint; the tubular space comprises a large diameter part located at the rear and a small diameter part located at the front, the large diameter auger and the small diameter auger are an integral structure, the integral structure is rotatably connected in the tubular space, wherein the large diameter auger is located in the large diameter part, the small diameter auger is located in the small diameter part, the integral structure is driven by a motor, and at the rear of the tubular space, a large diameter auger is arranged in the large diameter part, and a small diameter auger is arranged in the small diameter part. An inlet and a drain port are respectively provided on the upper and lower sides of the part, an orifice plate is fixed at the drain port, an outer sleeve and a protective tube are sequentially provided on the outside of the small diameter part, a reducer is connected to the front of the small diameter part, an outlet is provided at the front of the reducer, a plurality of joints are provided on the upper side of the tubular space, a sprayer is connected to the joint, the sprayer comprises a tower-shaped body, the tower-shaped body is composed of a plurality of disc-shaped bodies, an access port is provided at the top of the tower-shaped body, the access port is connected to the joint through a connecting pipe, the outer side of the joint is connected to the solvent source through a hose, and a plurality of long holes are provided on the outer side of the disc-shaped body.

[0006] Preferably, the sprayer is located in front of the input port, and the drain port is located behind the input port.

[0007] Preferably, a cavity is provided in the tower-shaped body, and the access port and the long hole are both connected to the cavity.

[0008] Preferably, the outer end surface of the long hole is inclined downward, and a plurality of holes vertically downward are provided at the bottom end of the tower-shaped body.

[0009] Preferably, a plurality of the rinsing devices are used in series, and the output port of the preceding rinsing device is connected to the input port of the succeeding rinsing device.

[0010] Preferably, a hose is connected to the outside of the drain port, and the hose is connected to the collecting tank.

[0011] Preferably, the motor is a reduction motor and further comprises a support base, on which the motor and the tubular space are fixedly mounted.

[0012] In the structure of the device, the tubular space is slightly inclined, and the rear side is slightly lower than the front side, so as to ensure that the solvent after elution (including the extruded part) can flow back to the drain port for discharge. The large diameter part of the tubular space is matched with a large diameter auger, and the small diameter part is matched with a small diameter auger. By reducing the diameter of the auger, the space for accommodating coarse materials is reduced, thereby squeezing the coarse materials after elution. The motor is used to drive the auger to rotate as a whole, so that the coarse materials are pushed forward. The input port is used to input the coarse materials to be eluted. The outer sleeve and the protective tube play an external protection role. The reducer further reduces the space, so that the coarse materials after elution and extrusion are squeezed out from the output port and can enter the next level. The utility model can achieve a good cleaning effect after multi-stage elution treatment. In order to ensure the dispersibility of the elution solvent, the utility model is designed with an inverted pagoda-shaped sprayer, and the disc-shaped body constitutes the pagoda-shaped structure; the access port and the connecting pipe are used to connect with the joint on the tubular space, so as to introduce the external elution solvent into the sprayer, and then spray it out from the long hole.

[0013] The utility model discloses a poly-L-lactic acid coarse material elution device. The device is designed with an inclined channel elution mode, and the coarse material in the tubular channel is eluted during the mechanical pushing process, and the elution solvent flows to the drain port for discharge. By changing the diameter of the auger, the coarse material after elution is squeezed (the residual solvent is squeezed out), thereby improving the subsequent elution efficiency. By using the utility model in multiple stages in series, a good cleaning effect can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is the structural diagram of large diameter auger and small diameter auger;

[0016] Figure 3 This is a structural diagram of the sprinkler after assembly;

[0017] Figure 4 This is the structural diagram of the sprinkler before assembly;

[0018] in:

[0019] 1. Tubular space 2. Small diameter part 3. Large diameter auger 4. Small diameter auger

[0020] 5. Motor 6. Input port 7. Drain port 8. Outer sleeve

[0021] 9. Protective tube 10. Reducer 11. Output port 12. Tower body

[0022] 13. Access port 14. Connecting pipe 15. Disc-shaped body 16. Long hole

[0023] 17. Connector. DETAILED DESCRIPTION

[0024] The specific implementation methods of the present invention will be described in detail below. In order to avoid too many unnecessary details, the well-known structures or functions will not be described in detail in the following examples. The approximate language used in the following examples can be used for quantitative expression, indicating that the quantity can be allowed to change without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following examples have the same meanings as those generally understood by technicians in the field to which the present invention belongs.

[0025] Example 1

[0026] A poly-L-lactic acid crude material elution device, see Figures 1 to 4, including a tubular space 1, a small diameter part 2, a large diameter auger 3, a small diameter auger 4, a motor 5, an input port 6, a liquid discharge port 7, an outer sleeve 8, a protective tube 9, a reducer 10, an output port 11, a sprinkler, and a joint 17; the tubular space 1 includes a large diameter part located at the rear and a small diameter part 2 located at the front, the large diameter auger 3 and the small diameter auger 4 are an integral structure, and the integral structure is rotatably connected in the tubular space 1, wherein the large diameter auger 3 is located in the large diameter part, and the small diameter auger 4 is located in the small diameter part 2, and the integral structure is driven by the motor 5, and the input port 6 and the small diameter auger 4 are respectively provided on the upper and lower sides of the rear of the tubular space 1. A liquid discharge port 7 is provided, at which a perforated plate is fixed, an outer sleeve 8 and a protective tube 9 are provided in sequence outside the small diameter portion 2, a reducer 10 is connected to the front of the small diameter portion 2, an output port 11 is provided at the front of the reducer 10, a plurality of joints 17 are provided on the upper side of the tubular space 1, a sprayer is connected to the joint 17, the sprayer comprises a tower-shaped body 12, the tower-shaped body 12 is composed of a plurality of disc-shaped bodies 15, an access port 13 is provided at the top of the tower-shaped body 12, the access port 13 is connected to the joint 17 through a connecting pipe 14, the outer side of the joint 17 is connected to the solvent source through a hose, and a plurality of long holes 16 are provided on the outer side of the disc-shaped body 15.

[0027] The tubular space 1 is slightly inclined, with the rear side slightly lower than the front side, to ensure that the solvent after elution (including the squeezed part) can flow back to the drain port 7 for discharge. The large diameter part of the tubular space 1 is matched with the large diameter augers 3, and the small diameter part 2 is matched with the small diameter augers 4. By reducing the diameter of the augers, the space for accommodating coarse materials is reduced, thereby squeezing the coarse materials after elution. The motor 5 is used to drive the augers to rotate as a whole, so that the coarse materials are pushed forward. The input port 6 is used to input the coarse materials to be eluted. The outer sleeve 8 and the protective tube 9 play an external protection role. The reducer 10 further reduces the space, so that the coarse materials after elution and extrusion are squeezed out from the output port 11 and can enter the next level. The utility model can achieve a good cleaning effect after multi-stage elution treatment. In order to ensure the dispersibility of the elution solvent, the utility model designs an inverted pagoda-shaped sprayer, and the disc-shaped body 15 constitutes the pagoda-shaped structure; the inlet 13 and the connecting pipe 14 are used to connect with the joint 17 on the tubular space 1, so as to introduce the external elution solvent into the sprayer and then spray it out from the long hole 16.

[0028] Example 2

[0029] A poly-L-lactic acid crude material elution device, see Figures 1 to 4, including a tubular space 1, a small diameter part 2, a large diameter auger 3, a small diameter auger 4, a motor 5, an input port 6, a liquid discharge port 7, an outer sleeve 8, a protective tube 9, a reducer 10, an output port 11, a sprinkler, and a joint 17; the tubular space 1 includes a large diameter part located at the rear and a small diameter part 2 located at the front, the large diameter auger 3 and the small diameter auger 4 are an integral structure, and the integral structure is rotatably connected in the tubular space 1, wherein the large diameter auger 3 is located in the large diameter part, and the small diameter auger 4 is located in the small diameter part 2, and the integral structure is driven by the motor 5, and the input port 6 and the small diameter auger 4 are respectively provided on the upper and lower sides of the rear of the tubular space 1. The drain port 7 is provided with an orifice plate fixed thereto, an outer sleeve 8 and a protective tube 9 are provided outside the small diameter part 2 in sequence, a reducer 10 is connected to the front of the small diameter part 2, an output port 11 is provided at the front of the reducer 10, a plurality of joints 17 are provided on the upper side of the tubular space 1, a sprayer is connected to the joint 17, the sprayer comprises a tower body 12, the tower body 12 is composed of a plurality of disc-shaped bodies 15, an access port 13 is provided at the top of the tower body 12, the access port 13 is connected to the joint 17 through a connecting pipe 14, the outer side of the joint 17 is connected to the solvent source through a hose, and a plurality of long holes 16 are provided on the outer side of the disc-shaped body 15. The sprayer is located in front of the input port 6, and the drain port 7 is located behind the input port 6. There is a cavity in the tower body 12, and the access port 13 and the long holes 16 are both connected to the cavity. The outer end surface of the long hole 16 is inclined downward, and a plurality of holes are provided vertically downward at the bottom end of the tower body 12. The rinsing device is used in series, and the output port 11 of the previous rinsing device is connected to the input port 6 of the next rinsing device. A hose is connected to the outside of the drain port 7, and the hose is connected to the collection tank. The motor 5 is a reduction motor, and also includes a support seat, on which the motor 5 and the tubular space 1 are fixedly mounted.

[0030] The embodiments of the present invention are described in detail above, but the contents are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the scope of application of the present invention shall be included in the protection scope of the present invention.

Claims

1. A poly-L-lactic acid crude material elution device, characterized in that: The invention comprises a tubular space (1), a small diameter portion (2), a large diameter auger (3), a small diameter auger (4), a motor (5), an input port (6), a liquid discharge port (7), an outer sleeve (8), a protective tube (9), a reducer (10), an output port (11), a sprinkler, and a joint (17); the tubular space (1) comprises a large diameter portion located at the rear and a small diameter portion (2) located at the front; the large diameter auger (3) and the small diameter auger (4) are an integral structure, and the integral structure is rotatably connected in the tubular space (1), wherein the large diameter auger (3) is located in the large diameter portion, and the small diameter auger (4) is located in the small diameter portion (2); the integral structure is driven by the motor (5), and the input port (6) and the output port (7) are respectively provided on the upper and lower sides of the rear of the tubular space (1). A liquid discharge port (7) is provided, a perforated plate is fixed at the liquid discharge port (7), an outer sleeve (8) and a protective tube (9) are sequentially provided outside the small diameter portion (2), a reducer (10) is connected to the front of the small diameter portion (2), an output port (11) is provided at the front of the reducer (10), a plurality of joints (17) are provided on the upper side of the tubular space (1), a sprayer is connected to the joint (17), the sprayer comprises a tower body (12), the tower body (12) is composed of a plurality of disc-shaped bodies (15), an inlet (13) is provided at the top of the tower body (12), the inlet (13) is connected to the joint (17) through a connecting pipe (14), the outer side of the joint (17) is connected to a solvent source through a hose, and a plurality of long holes (16) are provided on the outer side of the disc-shaped body (15).

2. A poly-L-lactic acid crude material elution device according to claim 1, characterized in that: The sprayer is located in front of the input port (6), and the drain port (7) is located behind the input port (6).

3. A poly-L-lactic acid crude material elution device according to claim 1, characterized in that: A cavity is provided in the tower-shaped body (12), and the access port (13) and the long hole (16) are both connected to the cavity.

4. The poly-L-lactic acid crude material elution device according to claim 1, characterized in that: The outer end surface of the long hole (16) is inclined downward, and a plurality of holes vertically downward are arranged at the bottom end of the tower-shaped body (12).

5. The poly-L-lactic acid crude material elution device according to claim 1, characterized in that: A plurality of rinsing devices are used in series, and the output port (11) of a preceding rinsing device is connected to the input port (6) of a succeeding rinsing device.

6. The poly-L-lactic acid crude material elution device according to claim 1, characterized in that: A hose is connected to the outside of the drain port (7), and the hose is connected to the collection tank.

7. The poly-L-lactic acid crude material elution device according to claim 1, characterized in that: The motor (5) is a reduction motor and also comprises a support base, on which the motor (5) and the tubular space (1) are both fixedly mounted.

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