Rolling Mortar Wall
Under normal circumstances, the factors that affect the crushing effect and service life of the broken wall and the rolling mortar wall are: the content of material stone powder and material humidity, the hardness and particle size of the material, the feeding method, the quality of the broken wall and the rolling mortar wall itself, etc.
The content of crushed stone powder and the humidity of crushed material
When working in a cone crushing station, if the stone powder content and humidity of the material are relatively high, it will easily adhere to the crushing wall and the rolling mortar wall during crushing. Over time, it will not only reduce the production efficiency, but also affect the crushing and rolling walls. The wall of the mortar corrodes, reducing its service life. For materials with high stone powder content, they should be screened once before crushing, so that too much fine powder can be avoided during crushing; for materials with high humidity, certain measures should be taken to reduce moisture before crushing Content, such as natural drying or mechanical drying.
The hardness and particle size of the crushed material
According to the hardness of the crushed material in the cone crushing station, the degree of wear on the crushing wall and the rolling mortar wall is also different. The higher the hardness of the material, the more difficult it is to break, the greater the impact load on the crushing wall and the rolling mortar wall during production, and the corresponding shortening of the service life; when the hardness of the material is the same, the larger the particle size of the material entering the crushing cavity, the The more severe the plate wear, the shorter the service life.
The feeding method of the cone crushing station also has a certain influence on the service life of the crushing wall and the rolling mortar wall. If the feeding device of the cone crushing station is improperly installed, or too much material is put into the crushing cavity, it will cause uneven feeding, blockage of the material in the crushing cavity, etc., which will cause excessive unilateral force on the crushing wall rolling mortar wall. Increase the cutting wear of the ore, so that the liner is seriously damaged and the service life will be reduced.
The quality of the broken wall and the rolling mortar wall itself
The above are the external factors that affect the broken wall and the rolling mortar wall, and the quality of the broken wall and the rolling mortar wall itself is the most important factor. A good quality wear-resistant accessory has high requirements on the surface of the casting. Castings are not allowed to have cracks, slag inclusions, sand inclusions, cold barriers, pores, shrinkage holes, shrinkage porosity, lack of meat and other casting defects that affect performance. At present, the crushing walls and rolling mortar walls of cone crushing stations on the market are generally made of high manganese steel. With the continuous development of technology, the performance of wear-resistant materials is constantly improving. On the whole, it is necessary to choose a material that can quickly harden the surface under the action of impact load to form a hard and wear-resistant surface, while still maintaining the original toughness of the inner metal, so as to improve the broken wall and rolling mortar The life of the wall.
Replacement of broken wall and rolling mortar wall of cone crusher
When replacing the broken wall of the cone crusher and the wall of the rolling mortar, the wear of the fixed cone, adjusting ring, locking thread, counterweight and counterweight guard plate must be checked. If the wear is serious, replace with a new one, and then install the liner, which can reduce the time for secondary replacement and disassembly, saving time and effort. After the liner is installed, check whether the center of the liner is aligned, otherwise the liner will collide during operation, which will cause serious wear of the liner.
Replacement of mortar wall
The rolling mortar wall can be replaced on site. Unscrew the adjustment screw sleeve installed on the upper frame (note the counterclockwise rotation), remove the upper chamber hopper assembly, lift the adjustment screw sleeve with a lifting device, and remove the adjustment screw sleeve support plate bolts. The lower rolling mortar wall is replaced, the outer surface should be cleaned when assembling, the screw sleeve should be adjusted and the threaded surface should be greased, and then install and fix it in the reverse order.
The wall of the rolling mortar is fixed on the adjusting ring with a U-shaped screw, and zinc alloy is injected between the two to make it tightly combined. When the wall of the rolling mortar is newly installed or replaced, the tightening condition should be checked after 6-8 hours of work. And tighten the U-shaped screws again.
Replacement of broken wall
The broken wall can be replaced on site. Lift out the main shaft components and place them on a solid support platform. Take care not to damage the moving cone and spherical surface. At the same time, block all oil holes with cloth to prevent dust and impurities from entering. Remove the distribution plate, lock the nut, and lock the washer in turn. , Fusible gasket, weld two lifting lugs on the old plate at a distance of 180°, then the broken wall can be lifted out, and the new wall can also be installed with two lifting lugs at the location 180° apart. , And then install it in the reverse order of disassembly, and cut off the two lifting lugs when it is finished.
The cone crushing wall is fixed on the cone body with a cone head. Zinc alloy is cast between the two. After the newly installed or replaced cone crushing wall has been working for 6-8 hours, the tightening condition should be checked and the looseness should be checked immediately. Fasten.
Eternal Bliss Alloy Casting & Forging Co, Ltd.
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