Extruder for producing and processing polyacrylic acid amine alkyl ester

Abstract

The invention relates to an extruder for producing and processing polyamido alkyl acrylate, which is applied to the field of extruders and is characterized in that by arranging devices such as filling liquid, materials are fed into a feeding area through a hopper, are extruded from an exhaust area through a mixing area, and are kneaded and mixed when being conveyed to the position of the mixing area; at the moment, filling liquid is injected into the mixing area and gaps between the filling materials through a supplementing pump, the volatilization amount of the materials is reduced, meanwhile, the filling liquid can be heated through a heating pipe, when the filling liquid makes contact with the materials, the materials can be heated, the materials can be molten more uniformly, and the mixing efficiency is improved. When a mixture of the materials and the filling liquid moves to the position of the exhaust area, the materials are scattered, the filling liquid is volatilized under the action of high temperature and enters the exhaust box through the evaporation pipe, meanwhile, gas generated by the materials is filtered by the filter and discharged outwards, and finally the materials are discharged outwards through the material extrusion area.

Description

Technical Field

[0001] The invention relates to an extruder for producing and processing polyacrylic acid alkyl amine ester, in particular to an extruder for producing and processing polyacrylic acid alkyl amine ester applied in the field of extruders. Background Art

[0002] Polyacrylic acid alkyl esters are mainly used as film coating materials for oral tablets and capsules. They are usually white strips or powders, insoluble in water, but soluble in liquids such as ethanol.

[0003] After the production of polyacrylic acid amine ester is completed, an extruder is needed for extrusion molding. During extrusion molding, the materials are first mixed, then heated and melted, and then the gas generated during melting is discharged, and finally extruded. Since the material will volatilize harmful gases during the melting process, resulting in a poor processing environment, and the heating is from the outside to the inside, the heating effect is not ideal, so further improvement is needed. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that harmful gases will volatilize during the melting process of the material, resulting in a poor processing environment, and the heating is from the outside to the inside, and the heating effect is not ideal, so further improvement is needed.

[0005] In order to solve the above problems, the present invention provides an extruder for the production and processing of polyacrylic acid alkyl ester, comprising an extrusion tube, the inner wall of the extrusion tube is rotatably connected to a screw, one end of the screw is fixedly connected to a hopper, the outer wall of the extrusion tube is fixedly connected to a heating ring, a liquid tank and an exhaust box are arranged on one side of the extrusion tube located at the heating ring, a replenishing tube is fixedly connected between the liquid tank and the extrusion tube, a replenishing pump is installed on the outer wall of the replenishing tube, an evaporation tube is fixedly connected between the exhaust box and the extrusion tube, a heating tube is fixedly connected to the inner wall at the bottom end of the liquid tank, the interior of the liquid tank is filled with filling liquid, a filter is fixedly connected to the top of the exhaust box, the position of the extrusion tube near the hopper is set as a feeding zone, the position of the extrusion tube near the heating ring and the liquid tank is set as a mixing zone, the position of the extrusion tube near the exhaust box is set as an exhaust zone, the side of the extrusion tube located at the exhaust zone is set as an extrusion zone, and the blade density of the screw near the mixing zone and the extrusion zone is greater than the blade density of the exhaust zone.

[0006] As a further improvement of the present application, a cooling pipe is fixedly connected to the inner wall of the exhaust box, and a heat dissipation pipe and a circulation pump are fixedly connected to the side walls on both sides of the exhaust box.

[0007] As a further improvement of the present application, one end of the cooling pipe is connected to the heat dissipation pipe, and the other end of the cooling pipe is connected to the circulation pump. The exhaust box is fixedly connected to the outer wall of the heat dissipation pipe close to the heat dissipation pipe. Through the above arrangement, when the volatilized filling liquid enters the interior of the exhaust box, it will re-liquefy when it encounters the cooling pipe with lower temperature, thereby collecting the filling liquid entering the exhaust box.

[0008] As a further improvement of the present application, the outer wall of the extrusion tube located in the exhaust zone is fixedly connected to a primary flow tube, and the bottom end of the primary flow tube is fixedly connected to a collecting box. Through the above arrangement, when the material moves to the position of the exhaust zone, the filling liquid mixed in the material can be discharged into the interior of the collecting box through the primary flow tube, thereby performing initial separation of the filling liquid in the material.

[0009] As another improvement of the present application, a pump is fixedly connected to the top of the liquid tank, an output end of the pump is fixedly connected to a discharge pipe and communicates with the liquid tank, and an input end of the pump is fixedly connected to a pumping pipe.

[0010] As another improved supplement of the present application, a lower return pipe is fixedly connected to the bottom end of the collecting box, and an upper return pipe is fixedly connected to the bottom end of the exhaust box. Both the upper return pipe and the evaporating tube are connected to the extraction pipe. Through the above arrangement, the filling liquid collected inside the collecting box and the exhaust box can be re-drawn into the interior of the liquid tank.

[0011] As another improvement supplement of the present application, a hot air blower is arranged near the exhaust area of ​​the extrusion tube, and a blow pipe is fixedly connected between the output end of the hot air blower and the extrusion tube, and the inner wall of the blow pipe is rotatably connected to a lifting screw rod; the hot air blower can blow hot air into the interior of the extrusion tube close to the hot air blower through the blow pipe, thereby accelerating the volatilization of the filling liquid inside the hot air blower and enabling the filling liquid to be better separated from the material.

[0012] As another improvement of the present application, a material ejecting screw rod is installed inside the evaporator tube, the blow pipe and the primary flow tube; the setting of the material ejecting screw rod can prevent the material in the extrusion tube from flowing out through the evaporator tube, the blow pipe and the primary flow tube.

[0013] To summarize, through the setting of filling liquid and other devices, the material is put into the feed zone through the hopper, extruded from the exhaust zone through the mixing zone, and when the material is transported to the mixing zone, the material is kneaded and mixed. At this time, the filling liquid is injected into the mixing zone through the replenishing pump to fill the gaps between the materials, thereby reducing the volatilization of the materials. At the same time, the heating tube can heat the filling liquid so that the filling liquid can heat the material when it contacts the material, so that the material can be melted more evenly. When the mixture of the material and the filling liquid moves to the exhaust zone, the material disperses, and the filling liquid evaporates under the action of high temperature and enters the exhaust box through the evaporator tube. At the same time, the gas generated by the material is filtered out through the filter, and finally the material is discharged outward through the extrusion zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall appearance diagram of the first embodiment of the present application;

[0015] Figure 2 It is a front cross-sectional view of the whole of the first and second embodiments of the present application;

[0016] Figure 3 This is a three-dimensional diagram of the extrusion tube in the first embodiment of the present application;

[0017] Figure 4 This is a three-dimensional cross-sectional view of the extrusion tube in the first embodiment of the present application;

[0018] Figure 5 It is a front cross-sectional view of the liquid tank and the exhaust tank in the first and second embodiments of the present application;

[0019] Figure 6 This is a front cross-sectional view of the blowpipe and the primary flow pipe in the first and second embodiments of the present application;

[0020] Figure 7 This is a front cross-sectional view of the evaporation tube and the blowpipe in the first and second embodiments of the present application.

[0021] Description of the numbers in the figure:

[0022] 1. Extrusion tube; 2. Screw; 3. Hopper; 4. Heating ring; 5. Liquid tank; 501. Supplementary tube; 502. Supplementary pump; 6. Exhaust box; 601. Evaporation tube; 602. Upper reflux tube; 7. Heating tube; 8. Filling liquid; 9. Filter; 10. Feeding area; 11. Mixing area; 12. Exhaust area; 13. Extrusion area; 14. Cooling tube; 15. Heat dissipation tube; 16. Cooling fan; 17. Circulation pump; 18. Blowing tube; 19. Top screw rod; 20. Hot air blower; 21. Pump; 2101. Exhaust tube; 2102. Suction tube; 22. Primary flow tube; 23. Collection box; 2301. Lower reflux tube. DETAILED DESCRIPTION

[0023] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0024] The first implementation method:

[0025] Figure 1-7The invention shows an extruder for producing and processing polyacrylic acid amine alkyl ester, comprising an extrusion tube 1, wherein a screw 2 is rotatably connected to the inner wall of the extrusion tube 1, a hopper 3 is fixedly connected to one end of the screw 2, a heating ring 4 is fixedly connected to the outer wall of the extrusion tube 1, a liquid tank 5 and an exhaust box 6 are arranged on one side of the heating ring 4 of the extrusion tube 1, a supplementary tube 501 is fixedly connected between the liquid tank 5 and the extrusion tube 1, a supplementary pump 502 is installed on the outer wall of the supplementary tube 501, an evaporation tube 601 is fixedly connected between the exhaust box 6 and the extrusion tube 1, and a heating ring 4 is fixedly connected to the outer wall of the extrusion tube 1. A heating tube 7 is fixedly connected to the inner wall, the interior of the liquid tank 5 is filled with filling liquid 8, a filter 9 is fixedly connected to the top of the exhaust box 6, the position of the extrusion tube 1 near the hopper 3 is set as a feeding zone 10, the position of the extrusion tube 1 near the heating ring 4 and the liquid tank 5 is set as a mixing zone 11, the position of the extrusion tube 1 near the exhaust box 6 is set as an exhaust zone 12, and the side of the extrusion tube 1 located in the exhaust zone 12 is set as an extrusion zone 13, and the blade density of the screw 2 near the mixing zone 11 and the extrusion zone 13 is greater than the blade density of the exhaust zone 12.

[0026] The material is put into the feeding area 10 through the hopper 3, and is squeezed out from the exhaust area 12 through the mixing area 11. When the material is transported to the mixing area 11, the material is kneaded and mixed. At this time, the filling liquid 8 is injected into the mixing area 11 through the replenishing pump 502 to fill the gaps between the materials, thereby reducing the volatilization of the materials. At the same time, the heating tube 7 can heat the filling liquid 8 so that the filling liquid 8 can heat the materials when in contact with the materials, so that the materials can be melted more evenly. When the mixture of the material and the filling liquid 8 moves to the exhaust area 12, the material disperses, and the filling liquid 8 evaporates under the action of high temperature and enters the exhaust box 6 through the evaporation tube 601. At the same time, the gas generated by the material is filtered by the filter 9 and discharged outwardly. Finally, the material is discharged outwardly through the extrusion area 13.

[0027] Polyalkyl acrylate is usually in the form of white strips or powder, insoluble in water but soluble in liquids such as ethanol, so the filling liquid 8 is set to be water or other liquids that are incompatible with polyalkyl acrylate.

[0028] The second implementation method:

[0029] Figure 2 and 5-7 shows an extruder for the production and processing of polyacrylic acid alkyl ester. Different from the first embodiment, a cooling pipe 14 is fixedly connected to the inner wall of the exhaust box 6, and a heat dissipation pipe 15 and a circulation pump 17 are fixedly connected to the side walls on both sides of the exhaust box 6 respectively. One end of the cooling pipe 14 is connected to the heat dissipation pipe 15, and the other end of the cooling pipe 14 is connected to the circulation pump 17. A cooling fan 16 is fixedly connected to the outer wall of the exhaust box 6 near the heat dissipation pipe 15. Through the above arrangement, when the volatilized filling liquid 8 enters the interior of the exhaust box 6, it will reliquefy when it encounters the cooling pipe 14 with a lower temperature, and can collect the filling liquid 8 entering the exhaust box 6.

[0030] The outer wall of the extrusion tube 1 located in the exhaust zone 12 is fixedly connected to a primary flow tube 22, and the bottom end of the primary flow tube 22 is fixedly connected to a collecting box 23. Through the above arrangement, when the material moves to the position of the exhaust zone 12, the filling liquid 8 mixed in the material can be discharged into the interior of the collecting box 23 through the primary flow tube 22, and the filling liquid 8 in the material is initially separated.

[0031] The top of the liquid tank 5 is fixedly connected to a pump 21, the output end of the pump 21 is fixedly connected to a discharge pipe 2101 and is connected to the liquid tank 5, the input end of the pump 21 is fixedly connected to a suction pipe 2102, the bottom end of the collecting box 23 is fixedly connected to a lower return pipe 2301, the bottom end of the exhaust box 6 is fixedly connected to an upper return pipe 602, and the upper return pipe 602 and the evaporation pipe 601 are both connected to the suction pipe 2102; through the above arrangement, the filling liquid 8 collected inside the collecting box 23 and the exhaust box 6 can be re-pumped into the interior of the liquid tank 5.

[0032] A hot air blower 20 is arranged near the exhaust area 12 of the extrusion tube 1, and a blow pipe 18 is fixedly connected between the output end of the hot air blower 20 and the extrusion tube 1, and a top-feeding screw rod 19 is rotatably connected to the inner wall of the blow pipe 18; the hot air blower 20 can blow hot air into the interior of the extrusion tube 1 near the hot air blower 20 through the blow pipe 18, accelerate the volatilization of the filling liquid 8 inside the hot air blower 20, so that the filling liquid 8 can be better separated from the material, and the inside of the evaporation tube 601, the blow pipe 18 and the primary flow tube 22 are all installed with a top-feeding screw rod 19; through the setting of the top-feeding screw rod 19, the material in the extrusion tube 1 can be prevented from flowing out through the evaporation tube 601, the blow pipe 18 and the primary flow tube 22.

[0033] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An extruder for producing and processing polyacrylic acid alkyl esters, comprising an extrusion tube (1), characterized in that: The inner wall of the extrusion tube (1) is rotatably connected to a screw rod (2), one end of the screw rod (2) is fixedly connected to a hopper (3), the outer wall of the extrusion tube (1) is fixedly connected to a heating ring (4), a liquid tank (5) and an exhaust box (6) are provided on one side of the extrusion tube (1) located on the heating ring (4), a replenishing tube (501) is fixedly connected between the liquid tank (5) and the extrusion tube (1), a replenishing pump (502) is installed on the outer wall of the replenishing tube (501), an evaporation tube (601) is fixedly connected between the exhaust box (6) and the extrusion tube (1), a heating tube (7) is fixedly connected to the inner wall of the bottom end of the liquid tank (5), and The interior of the liquid box (5) is filled with a filling liquid (8), the top of the exhaust box (6) is fixedly connected to a filter (9), the position of the extrusion tube (1) close to the hopper (3) is set as a feeding zone (10), the position of the extrusion tube (1) close to the heating ring (4) and the liquid box (5) is set as a mixing zone (11), the position of the extrusion tube (1) close to the exhaust box (6) is set as an exhaust zone (12), and the side of the extrusion tube (1) located at the exhaust zone (12) is set as an extrusion zone (13), and the blade density of the screw (2) close to the mixing zone (11) and the extrusion zone (13) is greater than the blade density of the exhaust zone (12).

2. The extruder for producing and processing polyacrylic acid amine alkyl ester according to claim 1, characterized in that: The inner wall of the exhaust box (6) is fixedly connected with a cooling pipe (14), and the side walls on both sides of the exhaust box (6) are respectively fixedly connected with a heat dissipation pipe (15) and a circulation pump (17).

3. The extruder for producing and processing polyacrylic acid amine alkyl ester according to claim 2, characterized in that: One end of the cooling pipe (14) is connected to the heat dissipation pipe (15), and the other end of the cooling pipe (14) is connected to the circulation pump (17). The exhaust box (6) is fixedly connected to a heat dissipation fan (16) near the outer wall of the heat dissipation pipe (15).

4. The extruder for producing and processing polyacrylic acid amine alkyl ester according to claim 3, characterized in that: The outer wall of the extrusion tube (1) located in the exhaust area (12) is fixedly connected to a primary flow tube (22), and the bottom end of the primary flow tube (22) is fixedly connected to a collection box (23).

5. The extruder for producing and processing polyacrylic acid amine alkyl ester according to claim 4, characterized in that: The top end of the liquid tank (5) is fixedly connected to a pump (21), the output end of the pump (21) is fixedly connected to a discharge pipe (2101) and is in communication with the liquid tank (5), and the input end of the pump (21) is fixedly connected to a pump pipe (2102).

6. The extruder for producing and processing polyacrylic acid amine alkyl ester according to claim 5, characterized in that: The bottom end of the collecting box (23) is fixedly connected to a lower return pipe (2301), and the bottom end of the exhaust box (6) is fixedly connected to an upper return pipe (602), and the upper return pipe (602) and the evaporation pipe (601) are both connected to the extraction pipe (2102).

7. The extruder for producing and processing polyacrylic acid amine alkyl ester according to claim 6, characterized in that: The extrusion tube (1) is provided with a hot air blower (20) near the exhaust area (12), a blow pipe (18) is fixedly connected between the output end of the hot air blower (20) and the extrusion tube (1), and a material ejecting screw rod (19) is rotatably connected to the inner wall of the blow pipe (18).

8. The extruder for producing and processing polyacrylic acid amine alkyl ester according to claim 7, characterized in that: The evaporation tube (601), the blowing tube (18) and the primary flow tube (22) are all provided with a material pushing spiral rod (19) inside.

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