Melt polymerization reaction kettle for polycarbonate

Abstract

The utility model relates to the technical field of reaction kettles, and discloses a polycarbonate melt polymerization reaction kettle, which solves the problem that the existing reaction kettle is poor in stirring uniformity, and comprises a kettle body, an electric heating inner layer is fixedly arranged on the inner side wall of the kettle body, and a driving motor I is fixedly arranged in the middle of the top end of the kettle body; a combined stirring mechanism fixedly connected with an output shaft of the first driving motor is rotationally arranged in the kettle body, the combined stirring mechanism is composed of a main shaft, a melting and discharging combined supporting body, a polycarbonate circulating assembly and a plurality of stirring paddles, and the main shaft penetrates through the top of the kettle body and is fixedly connected with the output shaft of the first driving motor; the melting and discharging combined supporting body is fixedly connected to the bottom end of the main shaft, the polycarbonate circulating assembly is connected to the bottom end of the melting and discharging combined supporting body, and the stirring paddle is fixedly connected to the arc-shaped outer surface of the polycarbonate circulating assembly; by means of the reaction kettle, the stirring uniformity can be improved, and meanwhile polycarbonate can be fully molten.

Description

Technical Field

[0001] The utility model belongs to the technical field of reaction kettles, in particular to a polycarbonate melt polymerization reaction kettle. Background Art

[0002] When polycarbonate is produced and processed, a melt polymerization reactor is required to achieve melting and polymerization reaction of polycarbonate. In order to speed up the reaction rate, most existing melt polymerization reactors are equipped with an active stirring structure. The active stirring structure stirs in a fixed manner, and under the action of gravity, it is easy to cause different concentrations in the upper and lower layers inside the reactor and affect material preparation. Therefore, a longer stirring time is required. Therefore, the present application proposes a melt polymerization reactor for polycarbonate to improve the existing reactor. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a polycarbonate melt polymerization reactor, which effectively solves the problem of poor stirring uniformity of the prior reactor.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polycarbonate melt polymerization reactor, comprising a reactor body, an inner side wall of the reactor body is fixedly provided with an electric heating inner layer, a driving motor is fixedly provided at the middle position of the top of the reactor body, and a combined stirring mechanism fixedly connected to the output shaft of the driving motor is rotatably provided inside the reactor body, the combined stirring mechanism is composed of a main shaft, a melt-feeding combined support body, a polycarbonate circulation component and a plurality of stirring paddles, the main shaft is inserted into the top of the reactor body and is fixedly connected to the output shaft of the driving motor, the melt-feeding combined support body is fixedly connected to the bottom end of the main shaft, the polycarbonate circulation component is connected to the bottom end of the melt-feeding combined support body, and the stirring paddle is fixedly connected to the arc-shaped outer surface of the polycarbonate circulation component.

[0005] Preferably, a feed hopper is fixedly provided on the side of the top end of the kettle body, and a feed pipe inserted into the kettle body and matching with the molten material discharge assembly support is fixedly provided at the bottom end of the feed hopper.

[0006] Preferably, a plurality of supporting legs are fixedly provided on the sides of the bottom end of the kettle body, a discharge pipe is fixedly provided in the middle position of the bottom end of the kettle body, and a valve is provided on the discharge pipe.

[0007] Preferably, the molten material discharge combined support body is composed of a conical support body, a conical thermal insulation sleeve, a conical electric heating sleeve and a support frame. The conical support body is fixedly connected to the main shaft, the conical thermal insulation sleeve is fixedly connected to the arc-shaped outer surface of the conical support body, the conical electric heating sleeve is fixedly connected to the top of the outer surface of the conical thermal insulation sleeve, and the support frame is fixedly connected to the side of the outer surface of the conical thermal insulation sleeve. A molten material discharge chamber and a circulating inlet and outlet chamber are formed between the conical thermal insulation sleeve and the support frame.

[0008] Preferably, a plurality of first feeding holes connected to the melting feeding chamber are provided in the middle of the side of the support frame, and a plurality of second feeding holes connected to the circulating inlet and outlet chamber are provided at the bottom of the side of the support frame.

[0009] Preferably, the polycarbonate circulation component is composed of a second driving motor, a circulation barrel and a circulation feeding propeller. The second driving motor is connected to the interior of the conical support body, the circulation barrel is fixedly connected to the bottom end of the conical support body and inserted into the support frame, the circulation feeding propeller is located inside the circulation barrel and fixedly connected to the output shaft of the second driving motor, and a plurality of discharge holes connected to the circulation inlet and outlet chambers are provided at the top end of the side of the circulation barrel.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] (1) During operation, by providing a combined stirring mechanism consisting of a main shaft, a molten material unloading combined support body, a polycarbonate circulation component and a plurality of stirring paddles, basic stirring can be achieved through the rotation of the stirring paddles. By providing a polycarbonate circulation component consisting of a second driving motor, a circulation barrel and a circulation feeding propeller, the polycarbonate can be lifted and circulated, so that the polycarbonate at the bottom layer and the top layer can be fully mixed, thereby improving the uniformity of the mixing.

[0012] (2) By providing a combined melting support body consisting of a conical support body, a conical heat-insulating sleeve, a conical electric heating sleeve and a support frame, the polycarbonate can be melted in an orderly and sufficient manner, thereby avoiding local accumulation of the polycarbonate and affecting the melting effect, and at the same time supporting the polycarbonate circulation component. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] In the attached picture:

[0015] Figure 1 This is a schematic diagram of the structure of the melt polymerization reactor of polycarbonate of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the melt polymerization reactor of polycarbonate of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the combined stirring mechanism of the utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure between the melt-feeding combined support and the polycarbonate circulation component of the utility model;

[0019] In the figure: 1. kettle body; 2. electric heating inner layer; 3. driving motor 1; 4. combined stirring mechanism; 5. main shaft; 6. molten material discharge combined support body; 7. polycarbonate circulation component; 8. stirring paddle; 9. feed hopper; 10. discharge pipe; 11. supporting legs; 12. discharge pipe; 13. valve; 14. conical support body; 15. conical insulation sleeve; 16. conical electric heating sleeve; 17. supporting frame; 18. molten material discharge chamber; 19. circulating inlet and outlet chamber; 20. discharge hole 1; 21. discharge hole 2; 22. driving motor 2; 23. circulation barrel; 24. circulating feeding propeller; 25. discharge hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Depend on Figures 1 to 3 The utility model provides a polycarbonate melt polymerization reactor, comprising a reactor body 1, an electric heating inner layer 2 is fixedly arranged on the inner side wall of the reactor body 1, a driving motor 3 is fixedly arranged in the middle position of the top of the reactor body 1, and a combined stirring mechanism 4 fixedly connected to the output shaft of the driving motor 3 is rotatably arranged inside the reactor body 1, and the combined stirring mechanism 4 is composed of a main shaft 5, a melt-feeding combined support body 6, a polycarbonate circulation component 7 and a plurality of stirring paddles 8. The main shaft 5 is inserted into the top of the reactor body 1 and is fixedly connected to the output shaft of the driving motor 3, the melt-feeding combined support body 6 is fixedly connected to the bottom end of the main shaft 5, the polycarbonate circulation component 7 is connected to the bottom end of the melt-feeding combined support body 6, and the stirring paddle 8 is fixedly connected to the arc-shaped outer surface of the polycarbonate circulation component 7;

[0022] The driving motor 3 drives the main shaft 5 to rotate, and the main shaft 5 synchronously drives the molten material assembly support 6, the polycarbonate circulation component 7 and the stirring paddle 8 to rotate, and the stirring paddle 8 realizes basic stirring to improve the mixing uniformity of the polycarbonate;

[0023] Depend on Figure 1 and Figure 2 It is shown that a feed hopper 9 is fixedly arranged on the side of the top of the kettle body 1, a feed pipe 10 is fixedly arranged at the bottom of the feed hopper 9, which is inserted into the kettle body 1 and matches the molten material discharge assembly support body 6, a plurality of support legs 11 are fixedly arranged on the side of the bottom of the kettle body 1, and a discharge pipe 12 is fixedly arranged at the middle position of the bottom of the kettle body 1, and a valve 13 is arranged on the discharge pipe 12;

[0024] Feeding can be achieved through the feed hopper 9 and the discharge pipe 10, and discharging can be achieved through the discharge pipe 12 and the valve 13;

[0025] Depend on Figure 3 and Figure 4 It is given that the molten material discharge assembly support body 6 is composed of a conical support body 14, a conical insulation sleeve 15, a conical electric heating sleeve 16 and a support frame 17. The conical support body 14 is fixedly connected to the main shaft 5, the conical insulation sleeve 15 is fixedly connected to the arc-shaped outer surface of the conical support body 14, the conical electric heating sleeve 16 is fixedly connected to the top of the outer surface of the conical insulation sleeve 15, and the support frame 17 is fixedly connected to the side of the outer surface of the conical insulation sleeve 15. A molten material discharge chamber 18 and a circulating inlet and outlet chamber 19 are formed between the conical insulation sleeve 15 and the support frame 17. A plurality of chambers connected to the molten material discharge chamber 18 are opened in the middle position of the side of the support frame 17. The bottom end of the support frame 17 is provided with a plurality of discharge holes 21 connected to the circulating inlet and outlet chamber 19. The polycarbonate circulation assembly 7 is composed of a drive motor 22, a circulation barrel 23 and a circulation feeding screw 24. The drive motor 22 is connected to the inside of the conical support body 14. The circulation barrel 23 is fixedly connected to the bottom end of the conical support body 14 and inserted into the support frame 17. The circulation feeding screw 24 is located inside the circulation barrel 23 and is fixedly connected to the output shaft of the drive motor 22. The top end of the side of the circulation barrel 23 is provided with a plurality of discharge holes 25 connected to the circulating inlet and outlet chamber 19.

[0026] When the main shaft 5 rotates, the conical support body 14 is driven to rotate, and the conical support body 14 drives the conical insulation sleeve 15, the conical electric heating sleeve 16 and the support frame 17 to rotate synchronously. The polycarbonate particles enter the interior of the melting and unloading chamber 18 and contact the conical electric heating sleeve 16. The conical electric heating sleeve 16 is used to pre-melt the polycarbonate particles, and the molten polycarbonate is discharged along the unloading hole 1 20. During the rotation of the polycarbonate circulation component 7, the circulating feeding propeller 24 is driven to rotate by the driving motor 22. Through the cooperation of the circulating feeding propeller 24 and the circulating barrel 23, the polycarbonate at the bottom end of the kettle body 1 can enter the interior of the circulating inlet and outlet chamber 19, and then be discharged through the unloading hole 21, realizing the turning operation, and can continue the circulation work, thereby improving the mixing uniformity of the polycarbonate.

[0027] During operation, by setting up a combined stirring mechanism consisting of a main shaft, a melt-feeding combined support body, a polycarbonate circulation component and a plurality of stirring paddles, basic stirring can be achieved through the rotation of the stirring paddles. By setting up a polycarbonate circulation component consisting of a second drive motor, a circulation barrel and a circulation feeding propeller, the polycarbonate can be lifted and circulated, so that the polycarbonate in the bottom layer and the top layer can be fully mixed, thereby improving the uniformity of the mixing. By setting up a melt-feeding combined support body consisting of a conical support body, a conical insulation sleeve, a conical electric heating sleeve and a support frame, the polycarbonate can be melted in an orderly and sufficient manner, thereby avoiding local accumulation of polycarbonate and affecting the melting effect, and at the same time, the polycarbonate circulation component can be supported.

Claims

1. A polycarbonate melt polymerization reactor, comprising a reactor body (1), characterized in that: The inner side wall of the kettle body (1) is fixedly provided with an electric heating inner layer (2); a driving motor (3) is fixedly provided at the middle position of the top of the kettle body (1); a combined stirring mechanism (4) fixedly connected to the output shaft of the driving motor (3) is rotatably provided inside the kettle body (1); the combined stirring mechanism (4) is composed of a main shaft (5), a molten material combined support body (6), a polycarbonate circulation component (7) and a plurality of stirring paddles (8); the main shaft (5) is inserted into the top of the kettle body (1) and is fixedly connected to the output shaft of the driving motor (3); the molten material combined support body (6) is fixedly connected to the bottom end of the main shaft (5); the polycarbonate circulation component (7) is connected to the bottom end of the molten material combined support body (6); and the stirring paddle (8) is fixedly connected to the arc-shaped outer surface of the polycarbonate circulation component (7).

2. The polycarbonate melt polymerization reactor according to claim 1, characterized in that: A feed hopper (9) is fixedly arranged on the side of the top of the kettle body (1), and a feed pipe (10) is fixedly arranged at the bottom of the feed hopper (9), which is inserted into the kettle body (1) and matches the molten material discharge assembly support body (6).

3. The polycarbonate melt polymerization reactor according to claim 1, characterized in that: A plurality of supporting legs (11) are fixedly arranged on the side of the bottom end of the kettle body (1), a discharge pipe (12) is fixedly arranged at the middle position of the bottom end of the kettle body (1), and a valve (13) is arranged on the discharge pipe (12).

4. The polycarbonate melt polymerization reactor according to claim 1, characterized in that: The molten material discharge assembly support body (6) is composed of a conical support body (14), a conical heat-insulating sleeve (15), a conical electric heating sleeve (16) and a support frame (17); the conical support body (14) is fixedly connected to the main shaft (5); the conical heat-insulating sleeve (15) is fixedly connected to the arc-shaped outer surface of the conical support body (14); the conical electric heating sleeve (16) is fixedly connected to the top of the outer surface of the conical heat-insulating sleeve (15); the support frame (17) is fixedly connected to the side of the outer surface of the conical heat-insulating sleeve (15); and a molten material discharge chamber (18) and a circulating inlet and outlet chamber (19) are formed between the conical heat-insulating sleeve (15) and the support frame (17).

5. The polycarbonate melt polymerization reactor according to claim 4, characterized in that: A plurality of first feeding holes (20) communicating with the molten material feeding chamber (18) are provided in the middle of the side of the support frame (17), and a plurality of second feeding holes (21) communicating with the circulating material inlet and outlet chamber (19) are provided at the bottom of the side of the support frame (17).

6. The polycarbonate melt polymerization reactor according to claim 4, characterized in that: The polycarbonate circulation component (7) is composed of a second drive motor (22), a circulation barrel (23) and a circulation feeding screw (24); the second drive motor (22) is connected to the inside of the conical support body (14); the circulation barrel (23) is fixedly connected to the bottom end of the conical support body (14) and inserted into the support frame (17); the circulation feeding screw (24) is located inside the circulation barrel (23) and is fixedly connected to the output shaft of the second drive motor (22); and a plurality of discharge holes (25) communicating with the circulation inlet and outlet chamber (19) are provided at the top end of the side of the circulation barrel (23).

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