What is the difference between jaw crusher and European jaw crusher? Which is more practical?

Traditional jaw crusher first appeared in 1858, its reliable performance and simple structure and easy maintenance has been widely used in ore crushing. Nowadays, with the change of demand and technological innovation, European jaw crusher gradually enters into people's sight. So what is the difference between European jaw crusher and traditional jaw crusher?

1、Crushing cavity shape

Ordinary jaw: half V-shaped crushing cavity

European jaw crusher: V-shaped crushing cavity

The crushing cavity of European jaw crusher is V-shaped structure, which makes the inlet and keep the width uniform, and the discharge port discharge more easily, relatively speaking, it is not easy to occur blocking phenomenon, it is not easy to bounce material, because the crushing cavity is deep and no dead angle, so crushing material is more efficient.

2、Lubrication device

Ordinary jawbreaker: manual lubrication

European jawbreaker: centralized hydraulic lubrication

The centralized hydraulic lubrication device is the standard configuration of the European jawbreaker, which can make the bearing lubrication more convenient.

3、Adjustment method

Ordinary jawbreaker: shim adjustment

European version of the jaw: wedge adjustment

Ordinary jaw broken between the adjustment seat and the back wall of the frame, put a set of shims of equal thickness, use to increase or decrease the number of shim layers, so that the crusher discharge opening is reduced or increased. This method can be adjusted at multiple levels, and the machine structure is more compact and reduces the weight of the equipment, but it must be stopped when adjusting.

European version of the jaw crusher adopts wedge adjustment, with the help of the relative movement of the two wedges between the adjustment seat and the rear wall of the frame to realize the adjustment of the crusher discharge opening. The front wedge can be moved back and forth, and the elbow plate seat is integrated into the adjustment seat; the rear wedge is an adjusting wedge, which can be moved up and down, and the slopes of the two wedges are inverted to fit together, so that the rear wedge can move up and down to adjust the size of the discharge opening by the screw.

4、Bearing seat fixing method

Ordinary jawbreaker: welding, the bearing seat and the frame are linked by welding, which has a short service life.

European jawbreaker: bolt, the bearing housing is made of cast steel, and it is linked with the frame by bolts, which ensures the cooperation between the two and greatly enhances the radial strength of the bearing housing and prolongs the service life.

5、Jaw plate structure

For large jaw breakers (such as 900*1200 and above), the movable and fixed jaw plates are divided into three pieces, while the jaw plates of small and medium-sized jaw breakers usually have only one piece. The eccentric shaft of European jawbreaker is bigger and the jaw plate is longer, which is optimized to be lighter in the weight of the equipment, while the strength of crushing has been increased. After the improvement and optimization upgrade, the same power efficiency output but increased a lot.

For the ordinary jaw plate and the European version of the jaw plate, according to the size of the equipment model selective use of whole or segmented jaw plate.

Advantages of three-section jaw plate:

1)The jaw plate of large jawbreaker is big and heavy if it is a whole piece, and it is relatively convenient to be divided into three sections for combination and installation; 2)The jaw plate of large jawbreaker is relatively convenient to be divided into three sections for combination and installation.

2) The jaw plate is divided into three sections, and it is relatively convenient to disassemble; 3) Key benefit: the three sections of jaw plate is relatively convenient to disassemble; 4) The jaw plate is divided into three sections.

3) Key benefit: the design of the three jaws is that the middle piece is smaller, and the two ends are the same size. If the bottom end of the jaw plate is more serious wear, it can be adjusted with the top end of the jaw plate to continue to use, saving costs.

6、Shape of jaw plate and guard plate

Ordinary Jaw: Flat type

European Jaw: Toothed

The guard plate (on top of the jaw plate) of ordinary jawbreaker is flat type, while the European version adopts toothed guard plate, which can be involved in crushing when crushing materials, and compared with the flat type guard plate, it increases the length of the jaw plate and improves the crushing efficiency.

The toothed jaw plate can give the material more crushing force direction, which is conducive to the more rapid crushing of the material, high crushing efficiency, in addition to be conducive to the control of the product particle shape