Zhengzhou Mingde Mining Equipment Factory

Introduction to sand making machine/rock sand making machine
Sand making machine is a new type of high-efficiency sand making machine developed in the 1990s through the introduction and digestion of foreign vertical shaft hammer crushers. crushing equipment. This machine is widely used in building materials, metallurgy, mining, coal, chemical and electric power industries, such as crushing cement clinker, gypsum, limestone, sandstone, blast furnace slag, iron ore, gold ore, molybdenum ore, matchstone, block For medium-hard materials such as coal, asbestos ore, and phosphate ore, the vertical plate hammer sand making machine using a new type of high-chromium alloy plate hammer can crush high-hardness materials such as river pebbles.
Sand Making Machine
Working Principle of Rock Sand Making Machine
When the material falls into the cylindrical body from the feed hopper, it is first impacted by the plate hammer on the rotor and moves at a very high speed. The material is thrown to the impact plate along the tangential direction of the rotor for impact. Under the action of the helical tooth surface of the impact plate and gravity, the material rebounds in the oblique downward direction to the space between the outer circumference of the rotor and the impact plate (i.e. the crushing cavity), and the material is crushed again. After being impacted by the rapidly rotating plate hammer, it is thrown to the impact plate, and the process continues to be repeated. Because the material is repeatedly impacted by the plate hammer and impact plate in the crushing cavity, as well as the mutual collision between the material blocks, the material is broken along its natural nodes and layers. When the particle size of the crushed material is smaller than the discharge gap of the first-stage rotor, the material enters the crushing cavity of the second-stage rotor under the action of gravity. The second-stage crushing process is the same as the first-stage crushing process. The difference is that the linear speed of the second-stage rotor is higher than that of the first stage, and the impact on the materials is greater, so the materials can be broken into smaller pieces. When the material is crushed to the final product size, it is discharged from the discharge hopper. Larger machines generally have three stages of crushing and three rotors.
Performance characteristics of rock sand making machine
Large crushing ratio, large input particle size~, more than 1% of the output particle size is smaller than that (~ is powder), and the output particle size modulus is adjustable
High energy utilization rate, low power consumption per unit output
Used in conjunction with a ball mill, the mill output can be increased~ and the system power consumption can be reduced~
The wearing parts are made of high wear-resistant alloy materials, with low wear and long service life Long
Balanced operation, good sealing performance, less dust, low noise
Simple structure, convenient operation, small footprint, easy installation and maintenance.
Sand making machine
Lubrication and maintenance of rock sand making machine
Most rock sand making machines use grease, and its rated speed is lower than thin oil lubrication, but it is very convenient and trouble-free. Grease cleaning is an important condition to ensure reliable operation of the bearing and extend the service life of the bearing. For this reason, we must pay attention to the bearing seal and choose a good sealing form. Generally, one or preferably two labyrinth seals and a skeleton oil seal are used. Judging from the actual use situation, the effect is very good. For rock sand making machines, grease with high temperature resistance and high viscosity must be used, especially for the lubrication of the main shaft bearings. Oil must be supplied forcefully and regularly to ensure smooth and long-term operation of the equipment.
Uses of rock sand making machine
In the engineering field, it is an ideal production equipment for machine-made sand, cushion material, asphalt concrete and cement concrete aggregate.
In the mining field, it is widely used in the front-end process of grinding. It can produce a large amount of fine ore and reduce the high-cost grinding load. It is widely used in the medium and fine crushing fields of various ores, cement, refractory materials, bauxite clinker, emery, glass raw materials and other high-hard and extra-hard materials. It is widely used in the crushing of machine-made construction sand, stone and various metallurgical slag. Compared with other types of stone crushers, it has higher output and efficiency.