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CN-121988228-A - Metering and feeding system for pretreatment of raw materials for polysulfone resin production

CN121988228ACN 121988228 ACN121988228 ACN 121988228ACN-121988228-A

Abstract

The invention relates to the technical field of polysulfone resin production equipment, and discloses a metering and feeding system for pretreatment of raw materials for polysulfone resin production, which comprises an equipment frame, an electric driving unit and a metering and conveying unit, wherein the electric driving unit and the metering and conveying unit are arranged on the equipment frame; the inside of the hopper is fixedly provided with a valve seat, a valve core is correspondingly arranged on the valve seat, a jacking mechanism is arranged in the packing unit, a pumping component is arranged in the rotating shaft, a gas transmission structure is arranged in the stirring frame, and a nozzle is rotationally connected with the stirring frame. According to the invention, firstly, a detachable butt joint structure of the transition bin and the hopper is adopted, and the automatic opening and closing of the feeding channel along with the disassembly and assembly is realized by matching with the jacking mechanism, so that the operation safety, convenience and system operation stability of polysulfone resin raw material feeding are improved, and secondly, the problems of raw material arching and bridging are effectively broken through the arrangement of the stirring and scattering assembly and the pumping and gas transmission structure, the smooth feeding is ensured, meanwhile, the folding and storage of the nozzle do not interfere with stirring, and the pretreatment requirement of polysulfone resin powder is adapted.

Inventors

  • LI ZHILIANG
  • REN JINJUN
  • LIU YANLIANG
  • NIU YONGTAO
  • LI XUEJIAN

Assignees

  • 安徽卓润新材料科技有限公司

Dates

Publication Date
20260508
Application Date
20260319

Claims (8)

  1. 1. The metering and feeding system for pretreatment of raw materials for polysulfone resin production comprises an equipment rack, an electric driving unit and a metering and conveying unit (18), wherein the electric driving unit and the metering and conveying unit (18) are arranged on the equipment rack, and the metering and conveying unit (18) is characterized in that a filling unit is arranged at the feeding end of the metering and conveying unit (18) and is formed by communicating a transition bin (5) with a hopper (14); A valve seat (15) is fixedly arranged in the hopper (14), a valve core (16) is correspondingly arranged on the valve seat (15), a jacking mechanism is arranged in the packing unit, and when the transition bin (5) is in butt joint with the hopper (14), the valve core (16) is lifted off the valve seat (15) under the action of the jacking mechanism so as to open a feeding channel; The inside of transition storehouse (5) rotates has stirring to break up the subassembly, comprises fixed swivel (6) and carriage (7) mutually, the inside of swivel (6) is provided with the pump gas part, be provided with gas transmission structure in carriage (7), the rotation of carriage (7) is connected with nozzle (9), gas outlet end and nozzle (9) intercommunication of gas transmission structure, the electric drive unit control stirring breaks up the subassembly and rotates, and the inside high-pressure gas of being pumped into of swivel (6) rotates under the effect of high-pressure gas when the output of pump gas part and gas transmission structure's input and expands to with gas injection to case (16) surface.
  2. 2. The metering and charging system for pretreatment of raw materials for polysulfone resin production according to claim 1, wherein the pushing mechanism comprises a pushing ring (13) and a guide rod (17), the pushing ring (13) is fixed in the inner wall of the transition bin (5) and is upwards raised to form a pushing surface, the guide rod (17) is fixedly arranged at the bottom of the valve core (16) and penetrates through the valve seat (15) in a sliding manner, and when the ports of the transition bin (5) and the hopper (14) are aligned and closed, the valve core (16) is pushed upwards.
  3. 3. The metering and charging system for pretreatment of raw materials for polysulfone resin production according to claim 2, characterized in that the end of the guide rod (17) forms a mushroom-shaped limit boss, and the inside of the valve seat (15) is provided with a limit groove (151) for limiting the end of the guide rod (17); when the valve core (16) and the valve seat (15) are closed, a gap is formed between the bottom of the valve core (16) and the bottom of the hopper (14), and after the valve core (16) is lifted, a gap for the end part of the guide rod (17) to move upwards is formed in the limiting groove (151).
  4. 4. The dosing system for pretreatment of raw materials for polysulfone resin production of claim 1, characterized in that the inside of the swivel (6) is formed with a cavity groove (61), and the pumping unit comprises an air inlet pipe (11) and a slide plug pipe (10); The air inlet pipe (11) is embedded in the cavity groove (61), the air inlet end of the air inlet pipe penetrates through the outside of the transition bin (5) and is fixed with the transition bin (5) through the first positioning plate (111), and a one-way air inlet valve is arranged in the air inlet pipe (11); the sliding plug tube (10) is slidably connected to the outer side of the air inlet tube (11), the rotating shaft (6) is in screwed connection with the sliding plug tube (10) through threads, an upward opening hole groove (101) is formed in the sliding plug tube (10), and when the rotating shaft (6) rotates, the sliding plug tube (10) axially slides along the air inlet tube (11) under the action of the threads.
  5. 5. The metering and charging system for pretreatment of raw materials for polysulfone resin production according to claim 4, wherein the gas transmission structure comprises a communication groove (71) and a gas blowing pipe (8), the communication groove (71) is arranged in the stirring frame (7), and the communication cavity groove (61) and the gas blowing pipe (8) are communicated; the air blowing pipe (8) is fixed on the stirring frame (7) and is embedded in the nozzle (9), and when the hole groove (101) is aligned with the communication groove (71), high-pressure air is blown to the inner wall of the nozzle (9) through the air blowing pipe (8), so that the nozzle (9) is driven to rotate and lift.
  6. 6. The metering and feeding system for pretreatment of raw materials for polysulfone resin production according to claim 5, characterized in that an open slot (91) is provided at the side of the nozzle (9), the open slot (91) can be plugged by the air blowing pipe (8), a protrusion (81) is formed at the top of one side of the air blowing pipe (8) facing the open slot (91), a recess (92) is formed at the inner wall of the nozzle (9), and the protrusion (81) is embedded in the recess (92) when the air blowing pipe (8) is in a folded and folded state.
  7. 7. The metering and charging system for pretreatment of raw materials for polysulfone resin production according to claim 4, wherein said electric driving unit comprises a gear motor (3) and a driving shaft (4), said gear motor (3) is mounted on a device frame, its output end is in transmission connection with a metering and conveying unit (18), and said driving shaft (4) is synchronously driven by a differential transmission group, and the output end of said driving shaft (4) is in transmission connection with a rotating shaft (6) through a transition bin (5).
  8. 8. The metering and charging system for pretreatment of raw materials for polysulfone resin production according to claim 7, wherein a bearing sleeve (12) is arranged in the transition bin (5), the bearing sleeve (12) is rotationally connected with the rotating shaft (6), a positioning plate II (121) is fixedly arranged at one end of the bearing sleeve (12) penetrating through the outside of the transition bin (5), and the positioning plate II (121) and the positioning plate I (111) are overlapped and fixed on the outer wall of the transition bin (5) through bolts.

Description

Metering and feeding system for pretreatment of raw materials for polysulfone resin production Technical Field The invention relates to the technical field of polysulfone resin production equipment, in particular to a metering and feeding system for pretreatment of raw materials for polysulfone resin production. Background Polysulfone resin is a special engineering plastic with a main chain containing sulfonyl and aromatic nucleus structure, has excellent thermal stability, mechanical strength, electrical insulation and chemical corrosion resistance, and is widely applied to high-end fields such as medical equipment, electronic and electric appliances, food contact, aerospace and the like. In the polysulfone resin production process, raw material pretreatment and metering feeding are key links for guaranteeing polymerization stability, resin powder is temporarily stored firstly, then is sent into a metering and conveying unit, and quantitative feeding is realized through a screw conveying mechanism. In order to ensure continuous production, the feeding system mostly adopts a high-level bin body, and raw materials enter a metering and conveying unit through the bin body so as to meet the continuous feeding requirement of subsequent high-temperature polymerization. The prior polysulfone resin metering and charging equipment has the defects that firstly, polysulfone resin raw materials are required to be charged at a high position, workers need to ascend, the phenomena of raw material scattering, leakage and dust emission are easy to occur due to inconvenient operation, the production environment is polluted, raw material waste is caused, secondly, polysulfone resin powder has certain viscosity, the polysulfone resin powder is easy to accumulate on the surface of a feeding channel, arching and bridging are easy to form among powder particles, the conventional stirring structure of the prior equipment can simply scatter the raw materials before entering a metering and conveying unit, the problem that the materials are accumulated and agglomerated in a channel butted by a hopper and a transition bin to cause blockage after the high-position bin body finishes charging is solved, the raw material feeding is often interrupted, the stability of subsequent polymerization reaction is directly influenced, and the quality consistency of polysulfone resin products is further influenced. In order to overcome the defects in the prior art, the application provides a metering and feeding system for pretreatment of raw materials for polysulfone resin production. Disclosure of Invention The invention aims to solve the problems and provides a metering and feeding system for pretreatment of raw materials for polysulfone resin production. In order to achieve the aim, the invention adopts the following technical scheme that the metering and feeding system for pretreatment of raw materials for polysulfone resin production comprises an equipment frame, an electric driving unit and a metering and conveying unit, wherein the electric driving unit and the metering and conveying unit are arranged on the equipment frame, a filling unit is arranged at the feeding end of the metering and conveying unit, and the filling unit is formed by communicating a transition bin and a hopper; The inside of the hopper is fixedly provided with a valve seat, the valve seat is correspondingly provided with a valve core, the packing unit is internally provided with a jacking mechanism, and when the transition bin is in butt joint and closure with the hopper, the valve core is lifted off the valve seat under the action of the jacking mechanism so as to open a feeding channel; The inside rotation of transition storehouse has stirring to break up the subassembly, comprises mutually fixed swivel joint and stirring frame, the inside of swivel joint is provided with the pump gas part, be provided with the gas-supply structure in the stirring frame, the rotation is connected with the nozzle in the stirring frame, the gas-out end and the nozzle intercommunication of gas-supply structure, the electric drive unit control stirring breaks up the subassembly and rotates, and the inside high-pressure gas of being pumped into of swivel joint when the output of pump gas part is relative with the input of gas-supply structure, and the nozzle rotates under the effect of high-pressure gas and expands to the case surface with gas injection. Preferably, the pushing mechanism comprises a pushing ring and a guide rod, wherein the pushing ring is fixed in the inner wall of the transition bin and is upwards raised to form a pushing surface, the guide rod is fixedly arranged at the bottom of the valve core and penetrates through the valve seat in a sliding manner, and when the transition bin and the hopper port are aligned and folded, the valve core is upwards pushed up. Preferably, the end part of the guide rod forms a mushroom-shaped limit boss, and a limit groove for limiting th