The sand making machine is the core equipment of the machine-made sand production line. It is mainly suitable for the three-stage crushing and shaping of the machine-made sand production line. At present, it is widely used in a variety of metal and non-metal mines, refractory materials, abrasive ceramic raw materials, building materials and high-speed railway buildings. Water conservancy and hydropower construction, civil sand and gravel aggregate production and other industries of minerals and rock fine crushing and shaping operations, especially for medium-hard, extra-hard or abrasive materials, such as sandstone, granite, basalt, silicon carbide, emery, alumina, and magnesium sand is superior to other equipment.
The PLS series vertical impact crusher is a new type of sand making machine independently developed and manufactured by Luoyang Dahua Heavy Industry in 1989. The core technology has been continuously improved through continuous improvement. The sand making machine has low cost of use, strong adaptability, and large throughput. The finished product has excellent quality, wide application and unparalleled competitive advantages. At present, thousands of this product have been applied in many fields at home and abroad. Today, we take the PLS sand making machine as an example to explain the working principle of the two modes of sand making machine "stone beat stone, stone beat iron", so that you can choose the equipment that is more suitable for your needs.
1. Feeding method
The working principles of "Stone Beat Stone" and "Stone Beat Iron" should be discussed together with the feeding method. There are two feeding methods for the impact sand making machine, one is the complete center feeding, and the other is the center feeding with the waterfall. Generally speaking, the main feed of the whole center is "stone beat iron", and the center feeding along with waterfall feeding is a combination of "stone beat stone" and "stone beat iron".
The principle of "stone beat stone" crushing with complete center feed is that the material enters the central rotor of the crusher through the central feed pipe. During the operation, the rotor throws the material onto the peripheral guard plate and collides and breaks, and the material enters through its own gravity unloading hopper.
The principle of "stone beat stone" crushing with central feed along with waterfall is that the material enters the sand making machine through the central feed pipe, passes through the bulk material cone and falls on the distribution tray, and then is divided into two parts by the distribution tray, and one part enters through the distribution tray. The throwing wheel is projected out of the throwing wheel flow channel at a high speed, and the other part of the material in the same material tray is impacted and broken, and finally impacts the material lining of the crushing cavity, and then rebounds to the top of the crushing cavity to form a continuous material curtain. Friction is eventually broken. When "stone strikes iron", the material hits the peripheral guard plate.
2. Applicable situation
"Stone-Beat-Stone" focuses on shaping and is suitable for medium-hard and above, corrosive stones, such as granite and basalt. As the name implies, "Stone-Beat-Stone" reduces the contact with the original metal during the sand making process. The material shot by the wheel impacts and crushes the material lining to achieve the purpose of sand making, slowing down the wear rate of the equipment, reducing iron consumption, and longer equipment maintenance; "stone beat iron" focuses on sand making and is applied to stones with medium hardness or below and low corrosiveness, such as limestone. "stone beat iron" sand making machines mostly use "full-center feeding". During the sand making process, the material thrown by the rotor at high speed hits the beating guard and then rebounds, colliding with another part of the ejected material, and In this way, the sand making is completed by continuously throwing, impacting, and beating in the crushing cavity. The "stone-beat-iron" sand making machine is more efficient.
Due to the difference in the principles of the two working modes, the "stone-beat-rock" sand making machine focuses on shaping, and the "stone-beat-iron" focuses on sand making. Therefore, if you pay attention to the grain type of sand, you can choose the "stone-beat-rock" crushing mode. You pay attention to the size of sand and gravel and the output of finished products, and you can choose the "stone-beat-iron" crushing mode. The two crushing modes of the PLS series sand making machine can share a set of crushing chambers. Through simple parts replacement, the crushing conversion between "stone-beat-rock" and "stone-beat-iron" can be realized, so as to adapt to more working conditions and crushing and shaping of different materials claim.