Polymerization reaction kettle for polyimide film production

Abstract

The utility model relates to a polyreactor for polyimide film production, which comprises a reactor body, a reactor cover detachably mounted at the top of the reactor body and support legs mounted at the bottom of the reactor body, a cavity is arranged inside the inner wall of the reactor body, a heating or cooling medium circularly flows in the cavity, and a medium inlet and a medium outlet which are connected with the cavity are arranged on the side wall of the reactor body. A plurality of feeding ports are formed in the top of the kettle cover, a discharging port is formed in the center of the bottom of the kettle body, a heat preservation assembly is arranged on the outer side of the discharging port, a rotating shaft is rotationally connected to the center of the top in the kettle cover, a rotating sleeve is installed at the bottom of the rotating shaft, push type paddles are evenly distributed on the circumference of the outer wall of the rotating sleeve, turbo type paddles are installed on the outer wall of the rotating shaft from top to bottom, and a wall scraping assembly is installed on the rotating shaft. A power assembly for driving the rotating shaft to rotate is arranged at the top of the kettle cover, the rotating shaft is hollow, and a lifting discharge port anti-blocking assembly is arranged in the rotating shaft. According to the utility model, multi-stage stirring can be realized, the mixing effect is improved, and the blockage phenomenon can be effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to polyimide film production technical field especially polyimide film production is with polymerization reation kettle. BACKGROUND

[0002] Polyimide film is a kind of high-performance polymer material, is famous with its outstanding thermal stability, mechanical strength, electrical insulation and chemical inertness.This kind of material has wide application in multiple high-tech fields, such as aerospace, electronic appliances, microelectronic packaging, flexible display etc.Polyimide film production usually involves complex chemical synthesis process, wherein polymerization reation kettle is one of key equipment.

[0003] Such as the disclosure number CN215139901U's Chinese practical new type patent discloses a kind of polyimide film production and processing is used reaction kettle, setting stirring mechanism, the preliminary mixing of raw materials is realized by stirring mechanism;Body is equipped with notch, raw material is mixed again by the cooperation of second rotating shaft and second stirring blade, stirring efficiency is improved, so that raw material is mixed fully, reduces the blockage of discharge connection pipe.But, in the scheme, raw material stirring direction is single, and discharge connection pipe still exists the possibility of blockage, because when the temperature in reaction kettle is higher and external environment temperature is lower, material close to discharge port can be solidified or thickened because of temperature sudden drop, to hinder flow. SUMMARY

[0004] The utility model aims at solving the insufficient of prior art, and provides a kind of polyimide film production is used polymerization reation kettle.

[0005] The utility model discloses a kind of polymerization reation kettle for polyimide film production, including kettle body, kettle cover that can be detachably installed in kettle body top and leg installation in kettle body bottom, the cavity is equipped in kettle body inner wall inside, heating or cooling medium is circulated and flows in the cavity, kettle body side wall is equipped with the medium import and medium export being connected with the cavity, kettle cover top is equipped with several feed ports, kettle body bottom center is equipped with discharge port, discharge port outside is equipped with heat preservation component, kettle cover inner top center is rotatably connected with the shaft, the shaft bottom is installed with the sleeve, the sleeve outer wall is evenly distributed and installed with the propeller blade of advance, the shaft outer wall is installed with the turbine type paddle from top to bottom, the shaft is installed with the wall scraping assembly, kettle cover top is equipped with the power component of driving the shaft rotation, the shaft is hollow and is equipped with the discharge port anti-blocking assembly that lifts in the shaft.

[0006] In particular, the wall scraping assembly includes a scraper rod in contact with the inner wall of the kettle body, and the scraper rod top and side wall are provided with a transverse connecting rod, and the connecting rod is fixedly connected with the shaft.

[0007] Particularly, the top of the kettle cover is provided with a mounting frame, the rotating shaft penetrates the kettle cover and is rotationally connected with the bottom of the mounting frame, the power assembly comprises a motor arranged at the top of the mounting frame, the main shaft of the motor penetrates into the mounting frame, and the rotating shaft and the main shaft of the motor are driven by a belt.

[0008] Particularly, the discharge port anti-blocking assembly comprises a spline sleeve arranged at the top of the rotating shaft and the bottom of the rotating sleeve, the rotating shaft and the rotating sleeve are sleeved with a spline shaft, the spline shaft is engaged with the spline sleeve, the bottom of the spline shaft is provided with a stirring blade, the top of the kettle cover is provided with an electric push rod, the top of the push rod of the electric push rod is provided with a lifting plate, and the top of the spline shaft is rotationally connected with the lifting plate.

[0009] Particularly, the heat preservation assembly comprises an electric heating pipe arranged on the outer wall of the discharge port.

[0010] The beneficial effects of the present application are as follows: the propeller type paddle and the turbine type paddle are arranged, the propeller type paddle pushes the raw materials to flow upwards, the turbine type paddle enhances the transverse mixing, multi-stage stirring is realized, and the mixing effect is improved; the wall scraping assembly is arranged, so that the materials are prevented from adhering to the inner wall and the mixing effect is prevented from being affected; the discharge port anti-blocking assembly is arranged, the stirring blade can be lifted and rotated in the discharge port, and the blocking phenomenon is effectively avoided; and the heat preservation assembly is arranged, so that the large temperature difference between the discharge port and the kettle body is prevented from causing the materials to solidify or affecting the flow, and the possibility of blocking is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a structural schematic view of the present application;

[0012] Fig. 2 It is a schematic view of the stirring blade of the present application extending into the discharge port;

[0013] In the figure: 1-kettle body; 2-kettle cover; 3-leg; 4-cavity; 5-medium inlet; 6-medium outlet; 7-feeding port; 8-discharge port; 9-rotating shaft; 10-rotating sleeve; 11-propeller type paddle; 12-turbine type paddle; 13-scraping rod; 14-connecting rod; 15-mounting frame; 16-motor; 17-spline sleeve; 18-spline shaft; 19-stirring blade; 20-electric push rod; 21-lifting plate; 22-electric heating pipe;

[0014] The embodiments of the present application will be described in detail below with reference to the accompanying drawings. DETAILED DESCRIPTION

[0015] The present application will be further described below in combination with the drawings and embodiments:

[0016] For example, Figs. 1-2As shown, a kind of polymerization reactor for polyimide film production, including kettle body 1, detachably installed on the kettle cover 2 of kettle body 1 top and the supporting leg 3 installed on the kettle body 1 bottom, the inner wall of kettle body 1 is equipped with cavity 4, heating or cooling medium is circulated and flows in cavity 4, kettle body 1 side wall is equipped with medium inlet 5 and medium outlet 6 connected with cavity 4, kettle cover 2 top is equipped with several feeding ports 7, kettle body 1 bottom center is equipped with discharge port 8, discharge port 8 outside is equipped with heat preservation component, heat preservation component includes electric heating tube 22 arranged on the outer wall of discharge port 8;By setting heat preservation component, the temperature difference between discharge port 8 and kettle body 1 inside can be avoided to cause material solidification or affect flow, reduce the possibility of blockage.

[0017] The top center of kettle cover 2 is rotatably connected with rotating shaft 9, rotating shaft 9 bottom is installed with rotating sleeve 10, rotating sleeve 10 outer wall is evenly distributed with propeller blade 11, rotating shaft 9 outer wall is installed with turbine blade 12 from top to bottom, rotating shaft 9 is installed with wall scraping assembly, wall scraping assembly includes scraping rod 13 in contact with kettle body 1 inner wall, scraping rod 13 top and side wall are equipped with transverse connecting rod 14, connecting rod 14 is fixedly connected with rotating shaft 9;By setting propeller blade 11 and turbine blade 12, propeller blade 11 pushes raw materials to flow upwards, and turbine blade 12 enhances transverse mixing, realizes multi-stage stirring and improves mixing effect;By setting wall scraping assembly, material adhered to the inner wall can be avoided, and mixing effect can be avoided.

[0018] The top of kettle cover 2 is provided with power assembly for driving rotating shaft 9 to rotate, the top of kettle cover 2 is provided with mounting bracket 15, rotating shaft 9 penetrates through kettle cover 2 and is rotatably connected with the bottom of mounting bracket 15, power assembly includes motor 16 arranged on the top of mounting bracket 15, the main shaft of motor 16 penetrates into mounting bracket 15, rotating shaft 9 and the main shaft of motor 16 are driven by belt.

[0019] Rotating shaft 9 is hollow inside, and discharge port anti-blocking assembly is arranged in rotating shaft 9, discharge port anti-blocking assembly includes spline sleeve 17 arranged on the top of rotating shaft 9 and the bottom of rotating sleeve 10, spline shaft 18 is sleeved in rotating shaft 9 and rotating sleeve 10, spline shaft 18 is engaged with spline sleeve 17, spline shaft 18 bottom is equipped with stirring blade 19, kettle cover 2 top is equipped with electric push rod 20, the top of push rod of electric push rod 20 is equipped with lifting plate 21, spline shaft 18 top is rotatably connected with lifting plate 21, by setting discharge port anti-blocking assembly, stirring blade 19 can be lifted and rotated in discharge port 8, effectively avoid the phenomenon of blockage.

[0020] The utility model discloses a work, raw materials enter the kettle body 1 in the feed inlet 7, according to need to fill the heating or cooling medium in the cavity 4, realize the temperature required for reaction, and heating effect can also make the gas in polyimide raw material heated up and float away from polyimide raw material, effectively remove the bubble of polyimide raw material, improve the quality of polyimide film, the rotation of the shaft 9 under the action of motor 16, drive the rotation of the propeller blade 11 and turbine paddle 12, the propeller blade 11 pushes raw materials to flow upwards, and turbine paddle 12 enhances the transverse mixing, realizes multistage stirring, improves mixing effect, during the period, the scraper 13 scrapes the kettle body 1 inner wall, avoids raw materials to adhere to the inner wall, when discharging, the electric push rod 20 drives the spline shaft 18 to go up and down, and the stirring blade 10 rotates and moves up and down in the discharge port 8, avoids the blockage, simultaneously, the electric heating pipe 22 is electrified and heated, avoids the temperature difference caused by the temperature of discharge port 8 and the temperature inside the kettle body 1 to cause material precondensation or hinder flow. The utility model discloses make raw material mixing effect good and can effectively prevent the blockage, convenient to use.

[0021] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0022] In the utility model, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixed connection, or can be detachable connection, or can be integrated;Can be mechanical connection, or electrical connection or can communicate with each other;It can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction relationship of two elements, unless otherwise expressly limited.The above-mentioned terms in the utility model can be understood according to the specific meaning of the specific situation by the ordinary skilled in the art.

[0023] The utility model has been described above in conjunction with the drawings, and obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, as long as various improvements are made by adopting the method concept and technical scheme of the utility model, or directly applied to other occasions without improvement, which is within the protection scope of the utility model.

Claims

1. A polymerization reactor for producing polyimide films, comprising a reactor body (1), a reactor cover (2) detachably mounted on the top of the reactor body (1), and support legs (3) mounted on the bottom of the reactor body (1), characterized in that, The inner wall of the vessel body (1) is provided with a cavity (4), in which a heating or cooling medium circulates. The side wall of the vessel body (1) is provided with a medium inlet (5) and a medium outlet (6) connected to the cavity (4). The top of the vessel cover (2) is provided with several feed inlets (7). The bottom center of the vessel body (1) is provided with a discharge outlet (8). The outside of the discharge outlet (8) is provided with a heat insulation component. The top center of the inner lid of the vessel cover (2) is rotatably connected to a rotating shaft (9). A rotating sleeve (10) is installed at the bottom of the rotating shaft (9). A propulsion blade (11) is evenly distributed around the outer wall of the rotating sleeve (10). A turbine blade (12) is installed from top to bottom on the outer wall of the rotating shaft (9). A wall scraping component is installed on the rotating shaft (9). The top of the vessel cover (2) is provided with a power component that drives the rotating shaft (9) to rotate. The rotating shaft (9) is hollow inside, and a lifting and lowering discharge outlet anti-blocking component is provided inside the rotating shaft (9).

2. The polymerization reactor for producing polyimide film according to claim 1, characterized in that, The wall scraping assembly includes a scraper (13) that contacts the inner wall of the vessel body (1). The top and side walls of the scraper (13) are provided with transverse connecting rods (14), and the connecting rods (14) are fixedly connected to the rotating shaft (9).

3. The polymerization reactor for producing polyimide film according to claim 1, characterized in that, The top of the lid (2) is provided with a mounting bracket (15). The rotating shaft (9) passes through the lid (2) and is rotatably connected to the bottom of the mounting bracket (15). The power assembly includes a motor (16) set on the top of the mounting bracket (15). The main shaft of the motor (16) passes into the mounting bracket (15). The rotating shaft (9) and the main shaft of the motor (16) are driven by a belt.

4. The polymerization reactor for producing polyimide film according to claim 1, characterized in that, The discharge port anti-blocking component includes a spline sleeve (17) set at the top of the rotating shaft (9) and the bottom of the rotating sleeve (10). A spline shaft (18) is fitted inside the rotating shaft (9) and the rotating sleeve (10). The spline shaft (18) and the spline sleeve (17) are engaged. A stirring blade (19) is provided at the bottom of the spline shaft (18). An electric push rod (20) is provided at the top of the lid (2). A lifting plate (21) is provided at the top of the push rod of the electric push rod (20). The top of the spline shaft (18) is rotatably connected to the lifting plate (21).

5. The polymerization reactor for producing polyimide film according to claim 1, characterized in that, The heat preservation component includes an electric heating tube (22) disposed on the outer wall of the discharge port (8).

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