Method of controlling an inertia cone crusher
AssigneeSandvik Intellectual Property AB
InventorsKonstantin Belotserkovskiy, Rickard Svensson
Life of this patent
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Abstract
A method of controlling the crushing of material in an inertia cone crusher includes the step of charging material to be crushed from a feeding hopper to a crushing chamber formed between an inner crushing shell being supported on a crushing head, and an outer crushing shell of the inertia cone crusher. An unbalance bushing, which is provided with an unbalance weight and rotatably connected to the crushing head by a drive shaft, is rotated such that a central axis of the crushing head gyrates about a gyration axis. The number of revolutions of the unbalance bushing is sensed using an rpm sensor. The number of revolutions of the unbalance bushing is controlled by a control system and the material is crushed in the crushing chamber.
Claims13
A method of controlling crushing of material in an inertia cone crusher, comprising the steps of:
- charging material to be crushed from a feeding hopper to a crushing chamber, the crushing chamber being formed between an inner crushing shell supported on a crushing head, and an outer crushing shell of the inertia cone crusher;
- rotating an unbalance bushing, which is provided with an unbalance weight and rotatably connected to the crushing head, by a drive shaft, such that a central axis of the crushing head gyrates about a gyration axis;
- sensing the number of revolutions of the unbalance bushing using an rpm sensor;
- controlling the number of revolutions of the unbalance bushing using a control system;
- sensing a power value of the inertia cone crusher;
- applying a constant power input to the inertia cone crusher by adjusting the number of revolutions of the unbalance bushing;
- and
- crushing material in the crushing chamber.
A method of controlling crushing of material in an inertia cone crusher, comprising the steps of:
- charging material to be crushed from a feeding hopper to a crushing chamber, the crushing chamber being formed between an inner crushing shell supported on a crushing head, and an outer crushing shell of the inertia cone crusher;
- rotating an unbalance bushing, which is provided with an unbalance weight and rotatably connected to the crushing head, by a drive shaft, such that a central axis of the crushing head gyrates about a gyration axis;
- sensing the number of revolutions of the unbalance bushing using an rpm sensor;
- controlling the number of revolutions of the unbalance bushing using a control system;
- receiving a stand-by signal;
- decreasing the number of revolutions of the unbalance bushing to a stand-by rpm, wherein the stand-by rpm is above 0 and below 30 rpm;
- and
- crushing material in the crushing chamber.
An inertia cone crusher comprising:
- an outer crushing shell and an inner crushing shell, said inner and outer crushing shells forming between them a crushing chamber, the inner crushing shell being supported on a crushing head, said crushing head being rotatably connected to an unbalance bushing, which is arranged to be rotated by a drive shaft, said unbalance bushing being provided with an unbalance weight for tilting the unbalance bushing when it is rotated, such that a central axis of the crushing head will, when the unbalance bushing is rotated by the drive shaft and tilted by the unbalance weight, gyrate about a gyration axis, the inner crushing shell thereby approaching the outer crushing shell for crushing material in the crushing chamber;
- an rpm sensor for sensing the number of revolutions of the unbalance bushing, wherein the unbalance bushing has a stand-by rpm above 0 and below 30 rpm;
- and
- a controller for controlling the number of revolutions of the unbalance bushing.
Dependencies are inferred from the claim text.