Two feeding methods for hydraulic cone crusher

The cone crusher realizes the adjustment of the discharge opening and the overload insurance in two ways: First, the mechanical method is adopted, and the upper end of the main shaft has an adjusting nut, and the rotating adjusting nut can be lowered or raised, so that the discharge opening is followed. Larger or smaller, when overloaded, the insurance pin on the drive pulley is cut off to achieve insurance; the second is a hydraulic hydraulic cone crusher whose main shaft is located on the plunger in the hydraulic cylinder, changing the plunger The volume of the hydraulic oil can change the upper and lower positions of the crushing cone, thereby changing the size of the discharge opening. When overloaded, the downward pressure of the main shaft increases, forcing the hydraulic oil under the plunger to enter the accumulator in the hydraulic transmission system, causing the crushing cone to descend to increase the discharge opening and discharge the non-material entering the crushing chamber. crushed material (iron, a wood, etc.) to achieve insurance.

The uniformity of the discharge particle size of the medium and fine crushing operation is generally higher than that required for the coarse crushing operation. Therefore, a parallel section must be provided at the lower part of the crushing chamber, and at the same time, the rotation speed of the crushing cone must be accelerated so that the material is in the parallel zone. Subject to more than one squeeze. The crushing of the medium-fine crushing operation is larger than that of the coarse crushing operation, so the loose volume after the crushing has a large increase. In order to prevent the crushing chamber from causing clogging, the total discharge cross section must be increased by increasing the diameter of the lower portion of the crushing cone without increasing the discharge opening to ensure the required discharge size.

The discharge port of the cone crusher is small, and the non-crushed material mixed into the feedstock is more likely to cause accidents. Because the medium and fine crushing operations have strict requirements on the discharge size, the discharge opening must be adjusted in time after the liner is worn, so the cone The safety and adjustment device of the crusher is more necessary than the coarse crushing operation.

When the material enters the action zone of the hammer, it is firstly crushed by the first impact of the hammer, and at the same time, the kinetic energy is obtained, and the counterattack is rushed at a high speed. After the material collides with the counterattack plate and is broken again, it is bounced back to the action area of ​​the hammer and is again impacted by the hammer. This is repeated until it is broken into the desired particle size and discharged out of the machine. Compared with the hammer crusher , the cone crusher has a larger crushing ratio and can more fully utilize the high-speed impact energy of the entire rotor. However, due to the extremely easy wear of the hammer, it is also limited in the application of hard material crushing. It is usually used for coarse crushing, medium crushing or fine crushing of limestone , coal , calcium carbide, quartz , dolomite, iron sulfide ore, gypsum and chemical raw materials. Brittle materials below medium hardness.

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