Jaw crushers

Laboratory jaw crushers and industrial jaw crushers of small sizes are designed for dry disintegration (mechanical destruction) of solid dry materials of medium and low strength (ore and non-metallic materials, construction materials, solid waste, etc.).

Characteristics:

They are characterized by simple design, reliable operation, and high serviceability that have placed them among the most common kinds of crushing equipment for many years.

Jaw crusher - design and operating principle:

The crusher consists of the frame-mounted housing to which the feed and discharge hoppers are attached.
Crushing occurs between the jaw plates covering the immovable and mobile crushing jaws and having the corrugated profile in cross section. The side walls of the housing are prevented from wear by the cheek plates.

The upper part of the mobile jaw is mounted on the eccentric shaft, the lower part is connected to the housing by the beam. The eccentric shaft starts rotating by the motor through the vee-belt drive. The flywheel is installed on the other shaft end opposite to the driven pulley. It is intended for creating the additional crushing force due to inertial force, as well as compensation of the overturn moment created by the weight of the pulley. The pulleys and the flywheel are covered by the guards.
 
The immovable jaw is ball-jointed to the housing with the help of easy-removable axis the turn relative to which makes it possible to set the necessary clearance (discharge aperture) between the jaw plates.

The crushed material flows from the feed hopper to the working area between the crushing jaws. While the eccentric shaft is rotating, the mobile jaw moves relative to the immovable one by crushing and discharging the material.

When the jaws move closer, the material is subject to crushing, and when the mobile jaw moves back, it falls into the discharge hopper.  The crusher efficiency and crushed material size are determined by the discharge aperture.  The discharge aperture is fixed by the stopper. When the rod is screwed in the housing thread with the counternut down, it makes the stopper moving through the plate washers that serve for crusher prevention from overloads. The stopper pushes the jaw that turns around its axis at the required angle to set the necessary aperture. In such position, the rod gets fixed in the thread with the counternut. To prevent the crusher from breakage in case of uncrushable object ingress, the rod has the breaking pin.

• a set of jaw plates
• a set of cheek plates
• breaking pin
• console
• toggle plate