SU1349790A1 - Method of automatic controlling of crusher charging - Google Patents

Abstract

The invention relates to the automation of the crushing process in cone crushers in the mining and processing industry and improves the quality of the process of controlling the crushing unit loading with a change in the physicomechanical properties of the crushing product. To achieve this goal, the power and capacity of the unit consumed by the initial power are measured by the drive motor, the ratio of the powder to the capacity and the change in the performance of the feeder are calculated, the level of the material in the crusher crushing chamber is measured and in front of

Description

by changing the capacity of the feeder, the specified values of the material level in the crushing chamber and the capacity of the feeder are changed depending on the calculated ratio of power to performance, and with an increase in the calculated ratio of power to productivity, the specified value of the feeder capacity and increase the specified value of the feeder decrease carried out until reaching

This invention relates to the automation of the crushing process in cone crushers widely used in the mining and processing industry.

The aim of the invention is to improve the quality of the process of regulating the loading of the crushing unit when the physical and mechanical properties of the crushing product change.

The essence of the control method is to ensure the highest possible performance by ensuring equal input capacity of the crusher (feeder capacity) and output when the physico-mechanical properties of the original ore change. This is achieved by maintaining the optimum level of the starting material in the crushing chamber and stabilizing the performance of the feeder at the newly set value at the moment when the material in the crushing chamber reaches the predetermined level.

The drawing shows a block diagram of a device that implements the method.

The device comprises a crusher 2 engine 1 with a power sensor 3, which is connected to the computing unit 4, a hopper 5, a feeder 6 with a performance sensor 7 connected to the computing unit 4 and a performance controller 8 connected to the memory unit 9, which is connected to the computing one unit 4, the regulator 10 level, the level of the material reserve of a modified set point, then stabilize the performance of the feeder. A device implementing this method contains a crusher 2 engine 1, a power sensor 3, a computing unit 4, a hopper 5, a feeder 6, a performance sensor 7, a performance controller 8, a memory block 9, a 10 level regulator, a level sensor 11, a block 12 switching and actuator 13. 1 Il.

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connected to the sensor 11 level, and the switching unit 12, which is connected to the performance controller 8 and the actuator I3 of the feeder 6.

The method is carried out as follows.

After start-up of crusher 2 operation, the engine power measured by sensor 3 and sensor 7, power of feeder 6 is supplied to computing unit 4, where the ratio of power consumed by drive motor 1 to power of feeder 6 is determined (specific power consumption for crushing - mechanical properties of the source material).

On the basis of the ratio calculated by block 4, memory block 9 issues a level reference to a level 10 controller and a performance task to a performance controller 8. Moreover, the specified level value corresponds to such a material reserve in the crushing chamber, which ensures maximum crusher performance with given physical and mechanical properties of the source material, and the specified performance value of the feeder 6 corresponds to the maximum crusher capacity with this difficulty of crushing the incoming ore. At the same time, unit 9 issues a signal to switching unit 12 to connect a level 10 controller to

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to the actuator 13. The regulator of level 10, acting on the actuator 13, changes the capacity of the feeder 6 until the level of the source material in the crusher reaches a predetermined value. At the time of reaching the level measured by the sensor 11,

The value of block 12 is switching switching capacity (produces regulator 10 from actuator 13 and connects performance regulator 8 to the performance of the source material feeder) and crusher output capacity when the physical and mechanical properties of the original ore change.

mechanism 13. The regulator 8 stabilizes the performance of the feeder 6 at a given 9 block value until the physical and mechanical properties of the ore change.

When the physicomechanical properties of the source material change, the value of the unit cost of crushing power (the ratio of the power consumed by the drive motor 1 to the performance of the feeder 6) will change. At the same time, if an increase in the unit cost of power occurs, the memory unit will reduce the task to the controller 8 for performance and increase the task to the controller 10, while reducing the unit cost of crushing will increase the task to the controller 8 for level and reduce the task to the controller 10 level. In either case, the memory block 9 simultaneously feeds a signal to connect the level 10 regulator to the actuator 13, when the material in the crushing chamber reaches a new level, the block 12 will disconnect the level 10 regulator from the actuator 13 and connect the regulator 8, which will keep the performance of the feeder at the newly set value until a new change in the physicomechanical properties of the starting material.

Editor S.Pekar

Compiled by V.Alekperov

Tehred A. Kravchuk Proofreader S. Shekmar

Order 5211/5 Circulation 573 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Thus, the use of sp.o., soba will allow to improve the quality of regulation of the process of loading of the crushing unit, to reduce the duration of the transition process of regulation and to ensure the maximum possible productivity of the crusher by ensuring equality of input performance (production

the efficiency of the feeder of the source material) and the output capacity of the crusher when the physico-mechanical properties of the original ore change.

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Claims (1)

Invention Formula A method for automatic control of the crushing load; gregata, which includes measurements of the power consumed by the drive motor and the unit capacity of the initial power supply, calculation of the ratio of power to capacity and change of the feeder capacity, characterized in that, the physicomechanical properties of the crushing product, measure the level of material in the crushing chamber of the crusher, and before changing By changing the capacity of the feeder, the set values of the material stock in the crushing chamber and the capacity of the feed are changed depending on the calculated ratio of power to capacity, and as the calculated ratio of power to capacity increases, the set value of the power of the feeder decreases and the set value of the material margin increases. the capacity of the feeder is carried out until the material level of the material reaches a modified predetermined value, after which the stable ziruyut performance of the feeder.