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Permanent Magnet Direct Drive Belt Conveyor

The Permanent Magnet Direct Drive Belt Conveyor has been proven by industrial tests that the parameters are reasonable, the structure is advanced, and it can fully meet the needs of underground transportation, and has been widely used in the major mines. In the traditional belt conveyor system, the belt is driven by a drum connecting with an asynchronous motor, a hydraulic coupler, and a speed reducer, which will lead to a low efficiency of the drive system, an unstably start, and a hard heavy-load start, etc. That is to say, the whole efficiency of the drive system will be affected, and the speed reducer, coupler and other parts may need to be maintained and changed frequently.

Through technical transformation, we adopt a gearless permanent magnet synchronous VFD system; namely, combining a permanent magnet synchronous motor with VFD. Without the speed reducer and the hydraulic coupler, the system becomes maintenance-free, quieter, steadier, high-performed and energy-efficient, and has a constant torque control, a stable start, and a larger output torque. This successful invention enables us to go further in the area of researching and designing green mining equipment and provide better equipment, technologies, and services to the mining industry.

Technical Parameters
Product Advantages
Product Features
Service Conditions

Description of Product Model

S/N	Belt Conveyor Specifications	Conveying Capacity (t/h)	Belt Speed (m/s)	Belt Width (mm)	Belt Type	Main Motor Power	Diameter of Drive Drum (mm)	Diameter of Idler (mm)
1	DSJ65/15/2×40	150	2	650	PVC680S	2×40	500	108
2	DSJ80/40/2×55	400	2	800	PVC800S	2×55	500	108
3	DSJ100/80/2×160	800	2.5	1000	PVC1000S	2×160	630	108
4	DSJ120/200/2×315	2000	3.5	1200	PVC1400S	2×315	830	133
5	DSJ120/180/4×200	1800	3.5	1200	PVC1400S	4×200	830	133

Improve drive efficiency and reduce power consumption. In the traditional drive system, the Y Series Asynchronous Motor is rated as IE1- Standard Efficiency; whereas in this new drive system, the Permanent Magnet Synchronous Motor is rated as IE4-Super Premium Efficiency. By using an IE4 rated Permanent Magnet Synchronous Motor, a DSJ80 belt conveyor can save up to 100,000 kWh per year compared to the same belt conveyor with an IE1 Y Series Asynchronous Motor.
The new system features a soft starter and is maintenance-free. It also uses a VFD to control the starting process, which allows the system to be up and running in a slow and uniform way. In addition, compared with the traditional system, the new system eliminates the hydraulic coupler, speed reducer, and synchronous gear, which could save substantial maintenance costs.
1. Achieve power balance. When the system uses multi-motor master-slave control drive, power balance can be achieved to avoid the damage to the motor caused by multi-motor power imbalance.
2. Large starting torque—The permanent magnet synchronous motor of the system allows the belt conveyor to output starting torque at 2.8 times of the rated load torque, whereas the starting torque of the traditional asynchronous motors reaches 55% of the rated load torque.
Convey a variety of bulk and packaged materials with a density range of 500 to 2,500 kg/m3.
The applicable working environment temperature is generally between -40℃(-40℉) and 40℃(104℉). For those who require a heat-resistant, cold-resistant, anti-corrosion, explosion-proof, and/or flame-resistant working environment, a special rubber conveyor belt should be used and protective measures should be taken accordingly. Different conveyor belts have different required temperature to convey materials. The temperature of the conveying materials should not be higher than 60℃(140℉) when using a standard conveyor; the temperature of the conveying materials can reach up to 120℃(248℉) when using a heat-resistant rubber belt conveyor; when conveying acidic, alkaline, oily materials and/or materials with organic solvent nature, it is necessary to choose an oil-resistant, acid-resistant, and alkali-resistant rubber or plastic belt conveyor.