mixing drum drying capacity

Asphalt mixing plant in the production process , the drying time required in the drying drum forward 30 to 60 seconds , the frequency 45HZ, in the material , you need to invert 30 to 60 seconds , frequency 50HZ, the specific time depending producing multi- material Less and environmental temperature. In order to improve production efficiency, requires shorter process times reversing switch As possible, preferably controlled within 5 seconds . Bolted Type Cement Silo drum capacity is generally 1t ~ 10t, electricity Machine 18.5KW ~ 55KW power in general between , if you use the direct control of the motor contactor start stop Not only shut down for a long time , it normally takes about 30 seconds , and the frequent switching and straight forward reverse Then the start and stop of the motor equipment and grid impact are large, so that the device will greatly shorten Service life. In this case ,concrete batching plant the inverter , and the inverter has the following to Requirements: 1 ) strong overload 2 ) has a two -speed function 3 ) external terminal control 4 ) energy 24 Hours of work 5 ) can quickly reversing switch from positive to reverse the total time of 5 seconds or less.