How to Adjust the Raymond Mill?

The adjustment method of  Raymond Mill is as follows:

I. Adjustment of the whole system of the Raymond Mill

1. Manual adjustment of Raymond mill:

Switch handle to "manual" state;

Start the electromagnetic vibration feeder and adjust the feeding current of SCR to increase the feeding current gradually from small to large. With the increase of the feeding current, the host current will gradually increase and the fan current will gradually decrease.

Adjust the feed quantity with the main engine current rating without plugging the machine;

If there is a plug, adjust the feed to slightly lower than the plug point host current value.

2. Automatic adjustment of Raymond mill.

First, switch the handle to the "automatic" state;

Then,start the electromagnetic vibration feeder and adjust the feeding current of SCR to increase the feeding current gradually from small to large. With the increase of the feeding current, the host of the raymond mill current will gradually increase and the fan current will gradually decrease.

How do you determine if the host is saturated?

There are two situations:

First, if the wind force of the Raymond mill blower is large enough (there is surplus), it must be adjusted with the rated current of the host as the critical point.

For example, take the host motor 90KW as an example, the rated current is 165A, now the electronic current relay is set as 165A, the return value is set as %0.3, namely 5A (0.3%×165≈5

A), when the motor current of Raymond mill is greater than 165A, turn off the feed electromechanical source and stop feeding.

After not feeding, the motor current of the main motor of Raymond mill decreases, and when it drops to 160A (the difference between the set value of 165A and the set value of 5A), it is connected to the mechanical and electrical source of feeding.

Second, if the blower's wind is not big enough (the damper is opened), then the main mill of Raymond mill blocking machine as a critical point to adjust. That is, when the feed current increases with the main current gradually increased, the current of the fan gradually decreased, when the fan current reduced to a certain degree, the trend is constant.

At this time is the critical point of Raymond mill main block machine, if continue to feed will appear the plug machine, write down the main current value (X) at this point.

Stop the machine to clean the air duct and restart the machine. Set the on-line value of the electronic current relay to be slightly less than the X value and the return value to be %0.3. When the motor current of the host machine is greater than X, shut off the feed electromechanical source and stop feeding.

After not feeding, the motor current of the host decreases, and when it drops to x-0.3% X value, the feed electromechanical source is connected to feed.If there is a block during debugging.Remember the host current value (X value).Shut down clean the air duct and then make the above adjustment.

II. Adjustment of residual air pipe valve of Raymond mill:

When the air valve is adjusted by hand (i.e., the zero pressure surface adjustment of airflow), when the regulating valve is too large (i.e.

If the regulating valve is too small (that is, the exhaust gas is too small) when the zero pressure surface is too high, the gas will overflow from the inlet, affecting the workshop environment.

The correct method is to adjust the regulator valve to the feeding port without dust escape, and a small amount of air intake.

III. Adjustment of Raymond mill powder grinding valve (air lock device) .

The role of the powder valve is to collect the material of the cyclone collector (finished products) intermittent rhythm of the discharge of the cyclone collector, and to ensure the flow of the cyclone collector is constant, conducive to the collection of the cyclone collector.

The regulation method is as the following. 

If the valve of the control valve is closed too dead, there will be a Raymond mill cyclone collector collected materials can not be discharged in time.

When too much material is collected, part of the material is taken back to the blower, which increases the wear on the inner wall of the pipe and the wind blades, and also affects the collection efficiency of the large cyclone collector.

At this time, loosen the two closed balance hammer nuts by hand, remove one of the balance hammer (or two balance hammers at the same time to the inside that is to shrink the moment arm) to adjust the valve to ensure that the cyclone collector has a certain amount of material storage can be timely and flexible to open, and the valve is normally closed when there is no discharge state.

If the valve is not closed properly, or the valve is stuck and cannot be closed, then the external gas will enter the large cyclone collector, the system will be out of order, the large cyclone collector collection will be affected, or even no production.

It will also affect the environmental hygiene of the workshop.

At this time you have to open the square access door, readjust the door plate, to ensure that the valve can be flexible to be opened and closed, to ensure the normal operation of the Raymond mill machine.