风机的传动方式有A、B、C、D四种。
4—72型风机中，№2.8～6采用A式传动，№8～12采用C、D式传动，№16～20采用B传动。
4—72型离心通风机可作为一般工厂及大型建筑物的室内通风换气用，输送空气和其他不自然的、对人体无害的、对钢材无腐蚀性的气体。B4—72型风机可输送易燃易挥发性气体，但温度不得超过80℃。
B4—72型风机的性能与选用件及地基尺寸与4—72型一致，可按其样本选择。该风机结构基本与4—72型相同，№2.8～6A采用B35型带法兰与底脚的电动机，№6～12C、D电动机选用该表中与Y系列对应的YB系列，安装型式为B3。
№2.8～6出厂时均做成1种型式，使用单位根据要求再安装成所需要的位置，订货时不需注明，№2.8出风口位置调整范围0°～225°，间隔是45°。№3.2～6出风口位置调整范围0°～225°，间隔是22.5°。№8～12出风口位置调整范围0°～225°，间隔是45°。№16、20出风口位置制成固定的三种0°、90°、180°，不能调整，订货时须注明。 4—72型离心通风机可作为一般工厂及大型建筑物的室内通风换气用，输送空气和其他不自然的、对人体无害的、对钢材无腐蚀性的气体。B4—72型风机可输送易燃易挥发性气体，但温度不得超过80℃。
Zibo Jinhao Blower Co., Ltd: Our company was incorporated in 1999. Since the establishment of our company, we have been trying our best to build a first-class fan manufacturer with standardization, specialization and modernization with high standards and high starting point. We met with China University of Mining and Technology, Northeast University of Technology, Xi'an Jiaotong University, Institute of Fluid, Shandong University and other institutions of higher learning to establish long-term technical cooperation and the introduction of new technologies and new products, strong technical force, in the domestic first-class level.
In the consideration of customers, the purpose of customers urgently need ,using new technologies, introduction of new products, and greatly enhance the fan design technology and rich experience in manufacturing expertise, the development of nearly 100 series, more than 2,000 variety of specifications required models, with its new structure, low noise, high performance, stable operation and other characteristics, are widely used in China's metallurgical, nonferrous metals, gold, chemicals, building materials and other types of mine ventilation site.
Cooperation with Shandong University in 2009 ,set up a "Shandong Jinhao energy-efficient R & D center" to make it more powerful technical force for the development of mine ventilation fan, ventilation system optimization design, ventilation optimization selection design, supporting electricity Control (soft starter control, inverter control) technology, on-line monitoring and remote control and video surveillance system development provides a strong technical support.
Our company cooperated with Chongqing Research Institute of Coal Science Research Institute to build the latest on-line fan test system which is the most advanced in China at present. Through the on-line testing, the main performance indexes of our products surpass the national designated targets. For my company's technology development, factory ventilation fan provides a strong technical support.
My company's products are exported to over 20 provinces (cities, from the rule of the area), they are improving the working environment of workers, to provide adequate fresh air flow and ensure safety in production at the same time, greatly reducing the ventilation power consumption, energy-saving effect is remarkable. The company is committed to the development and production of coal mine explosion-proof energy-saving main fan, explosion-proof coal mine explosion with local fans, metal mine energy-saving ventilation fans, gas pressurized centrifugal blower, universal centrifugal and axial fans, power station Centrifugal fans, textile axial fans and high temperature fans and other products.
The company also produces: radiators, heaters, cooling pipes, heat exchangers and other drying equipment. Widely used in light industry, paper, starch, silica gel, coating, printing and dyeing, textiles, electricity, medicine, metallurgy and other industries.
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