Feeding system for polyimide film production

Abstract

The feeding system for polyimide film production comprises a workbench, a spiral conveyor is obliquely arranged in the center of the top of the workbench, the top of the low end of the spiral conveyor is connected with a viscosity adjusting kettle through a first connecting pipe, and a feeding hopper is arranged at the bottom of the high end of the spiral conveyor. The feeding hopper is connected with the reaction kettle through a second connecting pipe, the reaction kettle is located at the bottom of the workbench, raw materials treated by the viscosity adjusting kettle are input into the reaction kettle through the spiral conveyor, and compared with a mode that a steel belt and a belt wheel serve as conveying components, the spiral conveyor can better input materials with certain viscosity, and the conveying efficiency is improved. In the input process, hot air is input into the rotating rod inner cavity in the rotating rod in the spiral conveyor, and the hot air enters the inner cavity of the spiral conveyor from the ventilation opening, so that the input raw materials are subjected to proper heat preservation treatment, and certain influence on input caused by solidification of the raw materials in the conveying process is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of polyimide film production, in particular to a feeding system for polyimide film production. Background Art

[0002] In the mid-20th century, with the development of aviation and aerospace technology, various industries had an urgent demand for heat-resistant, high-strength, lightweight structural materials, and polyimide with aromatic rings and heterocyclic rings as the main structural units in the main chain came into being.

[0003] China's authorized utility model disclosure (announcement) number: CN207772195U An automatic feeding system for preparing high-performance polyimide film includes a hopper, a suction device for sucking material into the hopper, the input end of the suction device is connected to a storage box, and the output end of the suction device extends into the hopper. It also includes a conveying component, a PLC controller, a weight sensor, an agitator and a gate. A weight sensor is set at the bottom of the hopper, and the weight sensor is connected to the PLC controller; the suction device, agitator and conveying component are driven by a motor, and the motor is connected to the PLC controller through a variable frequency speed regulator.

[0004] However, the above-mentioned prior art polyimide film production feeding system uses steel belts and pulleys as conveying components. However, the raw materials in the production of polyimide film need to undergo polymerization reaction in a reactor to produce a certain viscosity of the raw materials. When conveying on the conveying components, it is easy to cause adhesion, which in turn affects the feeding process during the production process. Utility Model Content

[0005] The purpose of the utility model is to provide a feeding system for polyimide film production to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A feeding system for polyimide film production, comprising a workbench, a screw conveyor, a viscosity adjustment kettle, and a reactor. The screw conveyor is obliquely arranged above the center of the top of the workbench. A support plate is provided at the lower end of the bottom of the screw conveyor. The bottom of the support plate is connected to the top of the workbench. A first connecting pipe is provided at the lower end of the top of the screw conveyor. The viscosity adjustment kettle is provided on the top of the first connecting pipe. A discharge port is provided at the upper end of the bottom of the screw conveyor. The discharge port is located inside a feeding funnel. A second connecting pipe is provided at the bottom of the feeding funnel. The bottom of the second connecting pipe is connected to the top of the reactor. The top of the reactor is located below the bottom of the workbench.

[0008] A driving motor is fixedly connected to the center of the lower end of the screw conveyor, and a rotating rod is provided at the output end of the driving motor. The other end of the rotating rod passes through the screw conveyor and is located at the high end of the inner cavity of the screw conveyor. A hot air blower is provided on the top of the workbench and outside the feeding funnel. A connecting air pipe is provided on the top of the hot air blower, and the other end of the connecting air pipe is connected to the rotating rod.

[0009] Preferably, a solenoid valve is provided on the surface of the first connecting pipe.

[0010] Preferably, an electric heating ring is fixedly sleeved on the outer surface of the second connecting pipe.

[0011] Preferably, a rotating rod inner cavity is provided inside the rotating rod, and the rotating rod inner cavity is communicated with the connecting trachea.

[0012] Preferably, the surface of the rotating rod is provided with spiral blades, and the surface of the rotating rod is provided with a plurality of ventilation holes.

[0013] Preferably, a supporting leg is provided on the other side of the bottom of the workbench.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model discloses a feeding system for producing polyimide film. The raw materials processed by the viscosity adjustment kettle are fed into the reactor through a screw conveyor. Compared with the steel belt and pulley mode as the transmission component, the screw conveyor can better feed materials with a certain viscosity. During the feeding process, hot air is fed into the inner cavity of the rotating rod inside the screw conveyor. The hot air enters the inner cavity of the screw conveyor from the vent, thereby performing appropriate heat preservation treatment on the input raw materials, preventing the raw materials from being affected by solidification during the transportation process.

[0016] The utility model provides a feeding system for polyimide film production. When the material is fed into the feeding funnel through a screw conveyor, it will be fed into the reactor through a second connecting pipe. In order to prevent the material from solidifying and clogging the second connecting pipe, the second heating pipe will be heated by an electric heating ring, which is conducive to the input of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0020] In the figure: 1. Workbench; 2. Support legs; 3. Reactor; 4. Viscosity adjustment kettle; 5. Screw conveyor; 6. First connecting pipe; 7. Support plate; 8. Hot air blower; 9. Feed hopper; 10. Discharge port; 11. Connecting air pipe; 12. Electric heating coil; 13. Solenoid valve; 14. Drive motor; 15. Rotating rod; 16. Inner cavity of rotating rod; 17. Spiral blade; 18. Ventilation port; 19. Second connecting pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0023] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0024] See also Figure 1-3 , the utility model provides a technical solution:

[0025] A feeding system for polyimide film production includes a workbench 1, a screw conveyor 5, a viscosity adjustment kettle 4, and a reactor 3. The screw conveyor 5 is obliquely arranged above the center of the top of the workbench 1. A support plate 7 is provided at the lower end of the bottom of the screw conveyor 5. The bottom of the support plate 7 is connected to the top of the workbench 1. A first connecting pipe 6 is provided at the lower end of the top of the screw conveyor 5. The viscosity adjustment kettle 4 is provided on the top of the first connecting pipe 6. A discharge port 10 is provided at the upper end of the bottom of the screw conveyor 5. The discharge port 10 is located inside a feeding funnel 9. A second connecting pipe 19 is provided at the bottom of the feeding funnel 9. The bottom of the second connecting pipe 19 is connected to the top of the reactor 3. The top of the reactor 3 is located below the bottom of the workbench 1.

[0026] A drive motor 14 is fixedly connected to the center of the lower end of the screw conveyor 5, and a rotating rod 15 is provided at the output end of the drive motor 14. The other end of the rotating rod 15 passes through the screw conveyor 5 and is located at the high end of the inner cavity of the screw conveyor 5. A hot air blower 8 is provided on the top of the workbench 1 and on the outside of the feeding funnel 9. A connecting air pipe 11 is provided on the top of the hot air blower 8, and the other end of the connecting air pipe 11 is connected to the rotating rod 15.

[0027] Furthermore, a solenoid valve 13 is provided on the surface of the first connecting pipe 6 .

[0028] Furthermore, an electric heating ring 12 is fixedly sleeved on the outer surface of the second connecting pipe 19 .

[0029] Furthermore, a rotating rod inner cavity 16 is defined inside the rotating rod 15 , and the rotating rod inner cavity 16 is communicated with the connecting air pipe 11 .

[0030] Furthermore, a spiral blade 17 is provided on the surface of the rotating rod 15 , and a plurality of ventilation holes 18 are opened on the surface of the rotating rod 15 .

[0031] Furthermore, a support leg 2 is provided on the other side of the bottom of the workbench 1 , and the entire device is supported by the support leg 2 .

[0032] Working principle: The raw materials processed by the viscosity adjustment kettle 4 will be input into the reactor 3 through the screw conveyor 5. How to increase the viscosity of the raw materials in the viscosity adjustment kettle 4 is an existing mature technology, and its internal specific structure and working principle will not be described in detail here. The screw conveyor 5 as a conveying component can better input materials with a certain viscosity compared with the steel belt and pulley method as a conveying component. Specifically, after the viscosity adjustment is completed, the solenoid valve 13 is opened. After the solenoid valve 13 is opened, it will enter the interior of the screw conveyor 5 through the first connecting pipe 6, and then the drive motor 14 is started. The rotation of the drive motor 14 will rotate the rotating rod 15, and the rotation of the rotating rod 15 will rotate the spiral blade 17, thereby conveying the material. During the conveying process, hot air is input into the rotating rod inner cavity 16 inside the rotating rod of the screw conveyor 5. The hot air will enter the inner cavity of the screw conveyor 5 from the vent 18, so that the temperature of the inner cavity of the screw conveyor 5 is appropriately increased, thereby performing appropriate heat insulation treatment on the input raw materials, and preventing the raw materials from solidifying during the conveying process and causing certain effects on the input.

[0033] After the material is input to the end point, it will flow out from the discharge port 10, and the outflowing material will enter the feeding funnel 9. When it reaches the feeding funnel 9, it will be input into the reactor 3 through the second connecting pipe 19. Finally, the material will react to produce a polyimide film. In order to prevent the material from solidifying and clogging the second connecting pipe 19, the second heating pipe 19 will be heated by the electric heating ring 12, which is conducive to the input of the material.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A feeding system for producing polyimide film, comprising a workbench (1), a screw conveyor (5), a viscosity adjusting kettle (4), and a reaction kettle (3), characterized in that: A screw conveyor (5) is obliquely arranged above the center of the top of the workbench (1), a support plate (7) is arranged at the lower end of the bottom of the screw conveyor (5), the bottom of the support plate (7) is connected to the top of the workbench (1), a first connecting pipe (6) is arranged at the lower end of the top of the screw conveyor (5), a viscosity adjustment kettle (4) is arranged at the top of the first connecting pipe (6), a discharge port (10) is arranged at the upper end of the bottom of the screw conveyor (5), the discharge port (10) is located inside the feeding funnel (9), a second connecting pipe (19) is arranged at the bottom of the feeding funnel (9), the bottom of the second connecting pipe (19) is connected to the top of the reactor (3), and the top of the reactor (3) is located below the bottom of the workbench (1); A driving motor (14) is fixedly connected to the center of the lower end of the screw conveyor (5), and a rotating rod (15) is provided at the output end of the driving motor (14). The other end of the rotating rod (15) passes through the screw conveyor (5) and is located at the high end of the inner cavity of the screw conveyor (5). A hot air blower (8) is provided on the top of the workbench (1) and outside the feeding funnel (9). A connecting air pipe (11) is provided on the top of the hot air blower (8), and the other end of the connecting air pipe (11) is connected to the rotating rod (15).

2. A feeding system for polyimide film production according to claim 1, characterized in that: A solenoid valve (13) is provided on the surface of the first connecting pipe (6).

3. A feeding system for polyimide film production according to claim 1, characterized in that: An electric heating ring (12) is fixedly sleeved on the outer surface of the second connecting pipe (19).

4. A feeding system for polyimide film production according to claim 1, characterized in that: A rotating rod inner cavity (16) is provided inside the rotating rod (15), and the rotating rod inner cavity (16) is communicated with the connecting air pipe (11).

5. A feeding system for polyimide film production according to claim 4, characterized in that: The surface of the rotating rod (15) is provided with spiral blades (17), and the surface of the rotating rod (15) is provided with a plurality of ventilation holes (18).

6. A feeding system for polyimide film production according to claim 1, characterized in that: A supporting leg (2) is provided on the other side of the bottom of the workbench (1).

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