Dear All,

Thank you very much for your valuable comments. i am new to this forum...i have read many threads in this forum related to screening and feeding and they are very helpfull for newcomer like me.

coming to my question I have to select a vibrator for a feeder of capacity 400 TPH

length = 3500 mm

pan width = 1200 mm

Amplitude = 4 to 5 mm

Speed = 1000 rpm

Weight of feeder including vibrator = 3000 kg (approx)

max. feed size of material = 600 mm

amplitude = static moment /wt of structure including vibrator

so static moment = 4 mm x 3000 kg =1200 kg.cm

I am going to use two vibrator for getting linear motion

so static moment of each vibrator = 600 kg.cm

working moment of each vibrator = 1200 kg.cm

from this value of working moment/static moment i can select vibrator from catalogue

but i want to know how do they calculate power consumption.

power = static moment x g x w

but i am getting different value from what they have mentioned in their catalogue.

can you people help me out how to do calculation for power consumption.

apart from these i have following doubts:

1. How to optimize speed stroke and slope...i mean what should be amplitude and speed.?

2. Amplitude depends on speed or not.?

3. where to place vibrator.? i think it should be placed in such a way that line of throw (in case of linear motion) should pass through cg of structure..but in fully loaded with material condition cg will change..so it should also be considered.?

4. what should be the g force value.?

5. what should be the minimum amplitude in material loaded condition.?

6. what about springs on which feeder is mounted..amplitude depends on spring or not.?

Regards,

Sumith ■

Dear All,

Thank you very much for your valuable comments.

I want to know the formula for power consumption by vibrator.

if static moment of a vibrator = 600 kg cm how to calculate the power.

power = static moment x g x speed

with above formula i am getting different value from what they have mentioned in vibrator catalogue.

kindly help me out.

Thanks & Regards,

Sumith ■

Originally Posted by mohandes

As Ziggy commented:

Unbalance motors specify by their static moment instead of power. Then you select unbalance motor from catalog and there you can see the power of selected motor.

static moment calculation:

simply multiply mass of machine to amplitude.

Dear Mohandes

Thank you very much for your valuable comments

I want to know the formula for power consumption by vibrator.

if static moment of a vibrator = 600 kg cm how to calculate the power.

power = static moment x g x speed

with above formula i am getting different value from what they have mentioned in vibrator catalogue.

kindly help me out.

Thanks & Regards,

Sumith ■

Dear All,

Thank you very much for your valuable comments.

I want to know the formula for power consumption by vibrator.

if static moment of a vibrator = 600 kg cm how to calculate the power.

power = static moment x g x speed

with above formula i am getting different value from what they have mentioned in vibrator catalogue.

kindly help me out.

Thanks & Regards,

Sumith ■