A jaw crusher is a kind of machine that is used to crush stones, but the stones have different reactions in dealing with crushing, that is, some of them are easily crushed, but others are completely turned into powder. and finally, some of them are very resistant. This type of stone crusher has the ability to crush large stones that are more than 40 cm in size by applying pressure between two plates or jaws. These crushers are always exposed to erosion due to constantly dealing with all kinds of coarse stones that are considered input. Therefore, they are usually made of manganese steel and have high resistance to this problem.
Jaws
Single-arm jaw crusher: In this type of crusher, its mobile jaw moves at a very low speed in four opposite directions: up, down, forward and backward. The pressure applied to the stones in this crusher is less and their entrance opening is smaller, so it is suitable for crushing hard stones. The single-arm jaw crusher is lighter, simpler and cheaper compared to the two-arm type, but it is not economical for abrasive and very hard stones.
< b>Arm pair jaw crusher: In this type of crushers, the movement of the mobile jaw is only in two directions, forward and backward, but the pressure between the jaws is more than the single arm type. Their entrance opening is bigger and they are used to crush very hard stones. Of course, compared to the single-arm type, they are heavier and their use involves more costs.
Of course, in another category, these crushers are classified according to their size. Buy a stone crusher that fits the weight and size of the stones you want.
Different components of jaw crusher
This stone crusher, like any type of industrial equipment and devices, consists of different parts, which are used in harmony with each other to crush stone. The most important parts of a jaw crusher are:
Load outlet throat
Body
Fixed jaw
Load inlet opening
Movable jaw
🔸Poly shaft
🔸Togol
🔸Spring behind Togol
How the jaw crusher works
Jaw crushers are differentiated into several types in terms of how the jaws move relative to each other:
Fixed upper (blake)
Fixed lower (dodge)
Fixed middle (universal)
The driving force of the electromotor is transferred to the flywheel through the belt and causes the mobile jaw shoulder to move towards the fixed jaw shoulder with periodic movement and in this process the stones They are crushed, then the mobile jaw is separated from the fixed jaw through the rotation of the crank shaft and the stretching of the cane rod, and finally the crushed stones are discharged. In the construction, the parts of the jaw including: Mardon bolts and nuts, bearing screws, jaw shoulder restraint screws and special steel rods are used to have a long life under heavy loads. It is possible that it has more resistance and longevity compared to normal straps. The trunnion of this device is cast from carbon steel and forged trunnions are not used in it. The size of the jaw is determined by the dimensions of the rectangle above it, and crushing is done between the jaws by pressing and hitting the stones.
The use of jaw crusher
The jaw crusher is used for crushing large stones (up to 40 square centimeters). A jaw crusher is placed at the beginning of the mineral stone crushing or sand production line in order to crush large stones and prepare feed for other machines in the rest of the line. The size of this device is determined according to the scale of the incoming stone. It is usually used in mines with very hard stones, such as riverbeds. Crushing of mineral stones at the beginning of the line or producing sand in order to crush large stones and prepare feed for other machines further down the line and its other use in mines With very hard rocks, such as river beds, it is considered part of jaw crusher applications. These crushers are designed in a special way due to exposure to wear; Also, the parts in contact with the stone in this device are made of quality steel, among them manganese steel and molybdenum manganese steel. This increases the life of the parts and reduces the depreciation caused by the operation of the device. This device has two smooth or wavy plates (jaws) which are a fixed jaw and a movable jaw, and the stones are compressed and crushed by the compressive or shearing forces between the two jaws.
Jaws
- قدرت و ظرفیت بالا در خردایش سنگها
- شانه فک ، بغل بندها و دیگر قطعات سایشی ساخته شده از جنس فولاد منگنزی
- ساختمان مستحکم و مقاومت بالا
- یک دست بودن بار خروجی
- قابلیت تنظیم دهانه خروجی
- طراحی زیبا و عملکرد مطمئن
- تعویض سریع و آسان قطعات یدکی
- راندمان بالا و کاهش هزینه نگهداری با داشتن سیستم روغن کاری