Why do mobile screw ship unloader manufacturers use sliding vane air compressor?

Why is sliding vane air compressor used in mobile screw ship unloader? And screw unloader manufacturers together to understand.

At present, the quality of piston air compressor for ship unloader in China is generally not high. Such as oil leakage, air leakage, connecting rod and crankshaft fracture, broken intake and exhaust valves and other inertial quality problems; at the same time, there are also large noise, vibration, large fuel consumption, many vulnerable and consumable parts, short inspection cycle, short service life of the whole machine, high failure rate and low reliability. This has seriously affected the normal operation of ship unloader system. Next, I will tell you why the ship unloader uses the sliding vane air compressor.

Application of screw machine

Screw air compressor has gradually replaced piston air compressor in many fields. Compared with the piston compressor, the failure rate of the screw compressor is low. However, due to the flooding of the screw compressor market in recent years, most manufacturers are moving towards the road of only price but not quality. Although the screw compressor host has some advantages over the piston compressor in design, most of the core rotor technology is still mastered by some foreign enterprises, that is to say, the domestic target The former screw compressor manufacturers are still walking on the road of imitation, and the fatal thing is that the screw machine can only achieve more than 4kw, and because of the high noise, it needs to add a panel for sound insulation, but it also increases the size of the compressor, and this model is not suitable for the application of ship unloader.

Application of slide machine

Different from the former two kinds of compressors, many foreign marine machinery giants are using sliding vane compressors as power sources. The sliding vane compressors are simple in appearance and can't see the complicated oil and gas pipelines like screw machines. This design is based on the modular embedded technology of Mattel compressor company in Italy. This technology has also won the gold award of industrial design issued by the UK twice and has been approved by China Internationally recognized as a pioneer in this field of technology, the main engine speed of the slide vane machine is 1480 rpm, which is only half of that of the screw machine. Because there is no gas escape under the full seal of the machine cavity, let alone secondary compression, the air volume of the slide vane machine is more sufficient than that of the screw compressor at low speed. At the same time, the two ends of the main engine of the slide vane machine use bearing (sliding bearing), and there is an oil passage inside the bearing So as long as there is oil in the bearing bush, there is basically no wear, so this also eliminates the screw compressor in use after a certain period of time need to replace the bearing and pay expensive maintenance costs. In addition, the sliding vane compressor in the design of oil-gas separation also made a lot of efforts, three-stage oil-gas separation makes the oil content of compressed air outlet less than 3ppm, At present, the design life of the compressor host of Mattel is 30W hours. As long as the normal maintenance of the equipment is carried out, the original accessories can be used for 20 to 30 years. Now, Mattel has gone through more than 100 years, and there has never been a malignant accident of the machine head, which is why so many enterprises have always chosen Mattel slide machine.

The ship unloader is a special machine which can lift the bulk materials by using continuous conveying machinery, or has the ability of self reclaiming, or is equipped with reclaiming and feeding devices to continuously lift the bulk materials out of the cabin, and then unload them to the boom or rack, and can be transported to the main conveying place on the shore to send them to the machine system. Do you understand?