Polyimide fiber dryer controlled by bottom cooling zones

Abstract

A bottom radiating zone-control polyimide fiber drier is characterized in that a machine frame is included, the machine frame is divided into a plurality zones, a first coaxial through hole, a second coaxial through hole and a third coaxial through hole are formed in the lower portion, the upper portion and the middle portion of each zone respectively, each zone is fixedly connected with a large transmission roller, a first small transmission roller, a second small transmission roller, a transmission device, a power device, a radiator and a temperature sensor respectively, the large transmission rollers, the first small transmission rollers and the second small transmission rollers are arranged on the same side of the machine frame, arranged in the first coaxial through holes, the second coaxial through holes and the third coaxial through holes in a penetrating mode and are fixedly connected, the transmission devices are placed on the other side of the machine frame and are fixedly connected with the large transmission rollers, the power devices are placed in the transmission frame and are fixedly connected with driving chain wheels of the transmission devices, the radiators are placed in the machine frame and are fixedly connected, the radiators are in sealing connection with steam pipelines, a temperature control device is fixedly connected with the machine frame, electric adjusting valves are in sealing connection with the radiators and the steam pipelines respectively, a protecting cover is arranged outside the machine frame in a covering mode and is fixedly connected, and a motor, the radiators, the temperature sensors and the electric adjusting valve are electrically connected with a control panel respectively.

Description

technical field [0001] The invention relates to polyimide fiber production equipment, in particular to a polyimide fiber dryer with bottom heat dissipation zone control. Background technique [0002] Polyimide fiber has become one of the important varieties of high-tech fibers at present. The industrialization process of polyimide fiber with excellent comprehensive properties such as radiation resistance, high temperature resistance, and high strength is gradually accelerating. It is widely used in aerospace, national defense and military industries. , new building materials, environmental protection and fire prevention and other fields are playing an increasingly important role. With the improvement of polyimide synthesis technology and fiber spinning technology, the requirements for special equipment for polyimide fiber are getting higher and higher. At present, the equipment of domestic polyimide production line cannot meet the performance requirements of polyimide fiber....

AI Technical Summary

Problems solved by technology

With the improvement of polyimide synthesis technology and fiber spinning technology, the requirements for special equipment for polyimide fiber are getting higher and higher. At present, the equipment of domestic polyimide production line cannot meet the performance requirements of polyimide fiber. , the existing problems are: the two ends of the transmission roller are fixedly connected to the frame through bearings. When the tow is wound on the transmission roller during production and needs to be removed, one is not easy to remove, and the other is that the tow is easily entangled on the operator's arm and causes a safety accident. ;The radiator is located on the top of the dryer, and the hot air blowing from top to bottom is against the natural law, so it is necessary to increase the power of the radiator, which increases the cost, poor drying effect, and low efficiency; due to the length of a dryer About 8 meters, the dryness of the tow changes from the entrance to the exit. It is driven by a set of power system, and only one rotation speed can be used, and the speed and radiator temperature cannot be adjusted according to the dryness of the tow. Therefore, There is an urgent need to provide a special dryer for the production of polyimide fibers that can control the speed of the drive roller and the temperature of the radiator according to the drying degree of the tow, and is easy to remove the entanglement of the tow and has no safety hazards.

Images