Due to the increasing scarcity of natural sand resources, the continuous introduction of policies to prohibit the mining of river sand, with the passage of time appeared artificially processed sand,
sand making machine as the production of processing sand equipment has been more and more widely used. At present, there are many types of
sand making machine in the industry, and its working principle is different, which directly affects the output of the sand making machine and relates to the customer's investment efficiency. This article will be devoted to the next two sand making machine's five crushing methods and working principles.
Vertical impact sand making machine crushing and feeding methods are: "stone to stone", "stone to iron", "completely center feed", "center Feeding with waterfall feeding".
First, the center of the feed with waterfall feed "stone hit iron" principle:
The basic principle of work and feed with the waterfall feed "stone" the same. The difference is that the crushing cavity is installed in the "stone" when the hitting guard, the material in the formation of a liner around it, the material impact to the material liner on the crushing, and "stone iron" will be under the hitting guard replaced by the weekly guard, the material is directly impacted to the weekly guard and crushed.
Second, the center of the feed accompanied by waterfall feed "stone to stone" principle:
The material enters the
sand making machine through the feeding hopper, and falls to the distributing plate through the cone of bulk material, and is divided into two parts. A part of the disk from the middle of the material into the high-speed rotation of the dumping wheel, in the dumping wheel is rapidly accelerated, and then high speed from the dumping wheel channel projectile out. These materials are firstly crushed by the impact of another part of materials falling around the distributing disk, and then impacted to the material lining layer of the crushing cavity together, and then impacted to the top of the crushing cavity diagonally upward after being rebounded, and then change the direction of the downward movement, and form a continuous material screen with the materials launched out of the dumping wheel channel. In this way, a piece of material in the crushing cavity by multiple impact, friction and grinding effect and broken.
Center feeding accompanied by waterfall feeding Stone hitting stone (left)/Stone hitting iron (right)
Vertical impact crusher crushing and feeding
Third, the complete center feeding "stone hitting iron" principle:
The material enters the rotor of the crusher through the feeding hopper, and the high-speed rotor shoots the material out, which hits the peripheral plate and crushes, and the crushed material leaves the crushing chamber under the effect of gravity and enters the lower casing discharging hopper to discharge the material.
Fourth, the complete center feeding "stone hitting stone" principle:
The material enters into the rotor of the crusher through the feeding hopper, and the high-speed rotor shoots out the material, which bounces back on the striking guard plate, and then falls down and collides with the material that is shot out from the rotor, and then crushes the material by repeated impact and friction inside the crushing chamber, and the crushed material leaves the crushing chamber and enters into the lower casing unloading hopper under the force of gravity to be discharged.
In general, the full-center feeding is mainly "stone hitting iron", generally used for sand making, with low output; while the center feeding with waterfall feeding is "stone hitting iron" combined with "stone hitting stone", generally used for shaping, with high output. The center feed with cascade feed is a combination of "stone hitting iron" and "stone hitting stone", which is generally used for shaping, with higher output.
The "stone to stone" crushing method is suitable for more than medium-hard abrasive materials, such as basalt and so on. During the crushing process, the material shot out from the dumping wheel impacts with the material lining without direct contact with the metal components of the equipment, which reduces iron consumption and thus reduces maintenance time. Good grain shape of the finished product under the working condition of "stone hitting stone".
The "stone to iron" crushing method is suitable for less abrasive materials below medium hardness, such as limestone. The crushing efficiency is high under the "stone to iron" working condition.
