Homogeneous distributor for a polylactic acid depolymerization reactor

Abstract

The utility model discloses a homogenizer of polylactic acid depolymerization cauldron, including storage jar, and the discharge port of storage jar is provided with the distribution seat outside rotation, and the distribution seat outside has the electric motor through the gear set drive connection with distribution channel, and distribution channel lower is equipped with first distribution hole, and the inner bottom wall of distribution channel is equipped with the inner distribution board through the limiting slide block sliding, and the inside of inner distribution board is equipped with the second distribution hole with first distribution hole up and down overlap, and is equipped with the horizontal shift adjusting support on the limiting slide block, the utility model discloses because the inner bottom wall of distribution channel is equipped with the inner distribution board through the limiting slide block sliding, and the inside of inner distribution board is equipped with the second distribution hole with first distribution hole up and down overlap, make through the horizontal shift adjusting support and inner distribution board horizontal shift adjusting of push -and -press mechanism drive, can adjust the coincidence of first distribution hole and second distribution hole, thereby can adjust the size of distribution hole, and then satisfy the distribution use processing of different through -hole.

Description

Technical Field

[0001] This utility model relates to the field of distributor technology, specifically a homogenizer for a polylactic acid depolymerization reactor. Background Technology

[0002] Polylactic acid (PLA) is a biodegradable polymer synthesized from lactic acid as the main raw material. It is widely used in textiles, plastics, packaging, and other fields. After disposal, it can degrade into carbon dioxide and water, causing minimal environmental pollution and making it an ideal green polymer material. The main methods for synthesizing PLA from lactic acid are the one-step and two-step methods. The one-step method, also known as direct condensation polymerization, is a process where lactic acid molecules directly condense and dehydrate to produce PLA. It is simple and low-cost, but it is difficult to obtain high molecular weight polymers. The two-step method involves cyclizing lactic acid to form lactide, which is then polymerized to form PLA. Although the process is longer and more expensive than the one-step method, the lactide ring-opening reaction does not produce water as a byproduct, making it easier to obtain PLA with molecular weights reaching millions. A depolymerization reactor is used in the PLA production process, and this reactor needs to be used in conjunction with a homogenizer.

[0003] The prior art, patent application number 202220483252.4, describes a homogenizer for a depolymerization reactor in polylactic acid production. By setting three different lengths of distribution pipes (long, medium, and short), it can evenly cover the heat exchange area of ​​the depolymerization reactor with the liquid material. Furthermore, by setting the pipe opening downward at 45°, it can reduce the resistance to the inlet and outlet of highly viscous materials. In order to distribute the liquid material in the heat exchange area at the same speed and flow rate, it can achieve a more uniform distribution in the heat exchange area. However, the size of the distribution hole at one end of the discharge pipe cannot be adjusted, making it difficult to meet the distribution needs of different through holes. Utility Model Content

[0004] The purpose of this invention is to provide a homogenizer for a polylactic acid depolymerization reactor, so as to solve the problem that the size of the dispensing hole at one end of the discharge pipe cannot be adjusted in the existing technology, making it difficult to meet the dispensing needs of different through holes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a homogenizer for a polylactic acid depolymerization reactor, comprising a storage cylinder, a distributing seat rotatably disposed outside the discharge port at the lower end of the storage cylinder, a motor connected to the outer side of the distributing seat via a gear set, a distributing channel disposed outside the distributing seat, a first distributing hole disposed on the lower wall of the distributing channel, an inner distributing plate slidably disposed on the inner bottom wall of the distributing channel via a limiting slider, a second distributing hole overlapping the first distributing hole disposed inside the inner distributing plate, a horizontal adjustment bracket fixedly disposed at the upper end of the limiting slider, the horizontal adjustment bracket being elastically slidably disposed outside the discharge port via a guide rod and a spring, and a pushing mechanism for horizontally adjusting the horizontal adjustment bracket disposed on the outer side of the lower end of the storage cylinder.

[0006] Furthermore, a feed pipe is provided on one side of the storage cylinder, and an air exchange port is provided on the upper side of the storage cylinder.

[0007] Furthermore, both the first and second dispensing holes are elliptical holes, and the first and second dispensing holes can completely overlap vertically.

[0008] Furthermore, the guide rod is fixedly welded to the outer wall of the discharge port, and a limiting end plate is provided at one end of the guide rod. The spring is sleeved on the outside of the guide rod between the limiting end plate and the transverse adjustment bracket.

[0009] Furthermore, the upper wall of the material distribution channel is provided with a limiting sliding hole, and the limiting slider is slidably configured with respect to the limiting sliding hole.

[0010] Furthermore, the pushing mechanism includes cylinders mounted via positioning seats, and multiple cylinders are provided with lifting push seats on their lower sides.

[0011] Furthermore, the lifting push base is configured as an inverted frustum base, and the lifting push base has a conical through hole inside.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this utility model, an inner material distribution plate is slidably provided on the bottom wall of the material distribution channel through a limiting slider. The inner material distribution plate has a second material distribution hole that overlaps with the first material distribution hole vertically. By driving the horizontal adjustment bracket and the inner material distribution plate to move horizontally through the pushing mechanism, the overlap of the first material distribution hole and the second material distribution hole can be adjusted, thereby adjusting the size of the material distribution hole and thus meeting the material distribution needs of different through holes.

[0014] 2. This utility model has a material distribution seat that rotates outside the discharge port at the lower end of the storage cylinder. The material distribution seat is connected to an electric motor through a gear set on the outside. The electric motor and gear set drive the material distribution seat to rotate horizontally and adjust it, thereby meeting the material distribution needs at different horizontal angles and improving the uniformity of material distribution.

[0015] 3. The present invention further includes a pressing mechanism comprising a cylinder mounted on a positioning seat, and a lifting push seat provided on the lower side of multiple cylinders. The lifting push seat is configured as an inverted frustum base, and the interior of the lifting push seat is provided with a conical through hole, so that the lifting push seat is driven to move downward by the cylinder, and the lifting push seat presses the transverse adjustment bracket to move laterally away from the discharge port. When the cylinder drives the lifting push seat to move upward, the transverse adjustment bracket moves laterally towards the discharge port under the action of the spring, thereby realizing the transverse adjustment of the inner material distribution plate. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the first-view structure of the present novel invention;

[0018] Figure 2 This is a schematic diagram of the second-view structure of the present invention;

[0019] Figure 3 This is a longitudinal sectional view of the material distribution channel structure of this utility model.

[0020] In the diagram: 1. Feed pipe; 2. Storage cylinder; 3. Air vent; 4. Discharge port; 5. Distributor seat; 6. Gear set; 7. Motor; 8. Second distribution hole; 9. Distribution channel; 10. Lifting push seat; 11. Cylinder; 12. Positioning seat; 13. First distribution hole; 14. Guide rod; 15. Limiting slide hole; 16. Limiting end plate; 17. Spring; 18. Lateral adjustment bracket; 19. Limiting slider; 20. Inner distribution plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 , Figure 2 , Figure 3 In this embodiment of the present invention, a homogenizer for a polylactic acid depolymerization reactor includes a storage cylinder 2, a feed pipe 1 on one side of the storage cylinder 2, a ventilation port 3 on the upper side of the storage cylinder 2, and a distribution seat 5 rotatably mounted outside the discharge port 4 at the lower end of the storage cylinder 2. A motor 7 is connected to the outer side of the distribution seat 5 via a gear set 6, and a distribution channel 9 is provided on the outer side of the distribution seat 5. This allows the distribution seat 5 to be driven to rotate horizontally by the motor 7 and the gear set 6, thereby meeting the requirements for distribution at different horizontal angles and improving the uniformity of the distribution.

[0023] like Figure 1 and Figure 3As shown, in order to adjust the size of the distributing hole, a first distributing hole 13 is provided on the lower wall of the distributing channel 9. An inner distributing plate 20 is slidably provided on the inner bottom wall of the distributing channel 9 through a limiting slider 19. A second distributing hole 8 is provided inside the inner distributing plate 20, which overlaps vertically with the first distributing hole 13. Both the first distributing hole 13 and the second distributing hole 8 are elliptical holes, and the first distributing hole 13 and the second distributing hole 8 can completely overlap vertically. A horizontal adjustment bracket 18 is fixedly provided at the upper end of the limiting slider 19. The horizontal adjustment bracket 18 is elastically slidably provided on the outside of the discharge port 4 through a guide rod 14 and a spring 17. A pushing mechanism for horizontal adjustment of the horizontal adjustment bracket 18 is provided on the lower outer side of the storage cylinder 2. The horizontal adjustment of the horizontal adjustment bracket 18 and the inner distributing plate 20 is driven by the pushing mechanism to adjust the overlap of the first distributing hole 13 and the second distributing hole 8, thereby adjusting the size of the distributing hole and meeting the distributing needs of different through holes.

[0024] like Figure 1 and Figure 2 As shown, the guide rod 14 is also fixedly welded to the outer wall of the discharge port 4, and a limiting end plate 16 is provided at one end of the guide rod 14. The spring 17 is sleeved on the outside of the guide rod 14 between the limiting end plate 16 and the transverse adjustment bracket 18, so that the transverse adjustment bracket 18 can be elastically slidably set on the outer wall of the discharge port 4.

[0025] like Figure 1 and Figure 3 As shown, in order to improve the stability of the horizontal adjustment of the inner material distribution plate 20, a limiting sliding hole 15 is provided on the upper wall of the material distribution channel 9, and the limiting slider 19 is slidably set with the limiting sliding hole 15 to guide the sliding adjustment of the limiting slider 19, which is beneficial to improving the stability of the horizontal adjustment of the limiting slider 19 and the inner material distribution plate 20.

[0026] like Figure 1 and Figure 2 As shown, the pushing mechanism also includes a cylinder 11 mounted on a positioning seat 12, and a lifting push seat 10 is provided on the lower side of multiple cylinders 11. The lifting push seat 10 is configured as an inverted frustum seat, and a tapered through hole is provided inside the lifting push seat 10. When the cylinder 11 drives the lifting push seat 10 to move downward, the lifting push seat 10 presses the transverse adjustment bracket 18 to move laterally away from the discharge port 4. When the cylinder 11 drives the lifting push seat 10 to move upward, the transverse adjustment bracket 18 moves laterally towards the discharge port 4 under the action of the spring 17, thereby realizing the transverse adjustment of the inner material distribution plate 20.

[0027] The working principle and usage process of this utility model are as follows: During use, liquid material is transported to the storage cylinder 2 through the feed pipe 1, and is evenly discharged through the material distribution seat 5 and the material distribution channel 9 outside the discharge port 4. Moreover, the inner bottom wall of the material distribution channel 9 is provided with an inner material distribution plate 20 through the limiting slider 19. The inner material distribution plate 20 is provided with a second material distribution hole 8 that overlaps with the first material distribution hole 13. By driving the horizontal adjustment bracket 18 and the inner material distribution plate 20 to move horizontally through the pushing mechanism, the overlap of the first material distribution hole 13 and the second material distribution hole 8 can be adjusted, thereby adjusting the size of the material distribution hole and thus meeting the material distribution processing of different through holes.

[0028] 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 homogenizer for a polylactic acid depolymerization reactor, comprising a storage cylinder (2), characterized in that: A material distribution seat (5) is rotatably provided outside the discharge port (4) at the lower end of the storage cylinder (2). A material distribution channel (9) is provided on the outer side of the material distribution seat (5). A first material distribution hole (13) is provided on the lower wall of the material distribution channel (9). An inner material distribution plate (20) is slidably provided on the inner bottom wall of the material distribution channel (9) through a limiting slider (19). A second material distribution hole (8) is provided inside the inner material distribution plate (20) that overlaps with the first material distribution hole (13). A horizontal adjustment bracket (18) is fixedly provided at the upper end of the limiting slider (19). The horizontal adjustment bracket (18) is elastically slidably provided on the outer side of the discharge port (4) through a guide rod (14) and a spring (17). A pushing mechanism for adjusting the horizontal movement of the horizontal adjustment bracket (18) is provided on the outer side of the lower end of the storage cylinder (2).

2. The homogenizer of a polylactic acid depolymerization reactor according to claim 1, characterized in that: The storage cylinder (2) is provided with a feed pipe (1) on one side and a ventilation port (3) on the upper side of the storage cylinder (2).

3. The homogenizer of a polylactic acid depolymerization reactor according to claim 1, characterized in that: The first material distribution hole (13) and the second material distribution hole (8) are both elliptical holes, and the first material distribution hole (13) and the second material distribution hole (8) can completely overlap vertically.

4. The homogenizer of a polylactic acid depolymerization reactor according to claim 1, characterized in that: The guide rod (14) is fixedly welded to the outer wall of the discharge port (4), and a limiting end plate (16) is provided at one end of the guide rod (14). The spring (17) is sleeved on the outside of the guide rod (14) between the limiting end plate (16) and the transverse adjustment bracket (18).

5. The homogenizer of a polylactic acid depolymerization reactor according to claim 1, characterized in that: The upper wall of the material distribution channel (9) is provided with a limiting sliding hole (15), and the limiting slider (19) is slidably arranged with the limiting sliding hole (15).

6. The homogenizer of a polylactic acid depolymerization reactor according to claim 1, characterized in that: The pushing mechanism includes a cylinder (11) mounted on a positioning seat (12), and a lifting push seat (10) is provided on the lower side of the multiple cylinders (11).

7. The homogenizer of a polylactic acid depolymerization reactor according to claim 6, characterized in that: The lifting push base (10) is configured as an inverted frustum base, and the lifting push base (10) has a conical through hole inside.

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