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Applicable to stitching car seat cushions, safety belts, safety air bags, tents,parachutes,etc.
 Characteristics
1.Designed with large vertical rotating hooks for thread loop catching and sliding bars for thread up taking.
 2.It has been sub-classed into single needle, two needle, single needle with under-trimmer and two needle with under trimmer.
 3.The application of needle bearing for arm shaft and hook shaft, cog belt driving, plunger pump lubrication and compound feed by needle bar, presser foot and feed dog provides this series with such splendid features as smooth running.
| 1 | Single Needle Heavy Leather Sewing Machine | ZY4410 |
| 2 | Double Needle Heavy Leather Sewing Machine | Â ZY4420 |
| Â | Â | Â |
| Â | Â | Â |
Intelligent Mine Main Ventilator Control System
Hufei company provide complete Mine Main Ventilator Control System include control cabinet, medium voltage VFD and other electric control system for coal mine machine.The main air volume of mine refers to the air volume of main inlet and return air shaft. The main ventilator`s working condition is automatically adjusted by using frequency control technology, realizing intelligent adjustment and control for the main air volume and air pressure of mine. In terms of concrete implementation, to meet the air volume required for underground operation, the frequency control system in main fan power supply module is used to control the main fan frequency conversion operation, and automatically adjust the speed of the ventilator on a large scale to make it operate under the optimum condition. When need to reduce the air volume, the synchronous speed can be changed by reducing the stator supply frequency of the motor, which can realize the main fan speed decrease; Conversely, when need to increase the air volume, it can be realized by increasing the motor stator supply frequency. Using the frequency converter to drive the operation of the main ventilator not only can realize the soft start of the ventilator and the stepless smooth speed regulation but also can greatly reduce the energy consumption of the fan and save energy.
Mine Main Ventilator Control System,Mine Ventilator Automation Control System,intelligent ventilator control
Jiaozuo Huafei Electronic & Electric Co., Ltd. ZhongKuang (Hainan) Technology Co., Ltd. , https://www.intelligentmine.com