River pebble sand making machine
River pebble sand making machine is a kind of sand making machine manufactured according to the market demand and combined with the characteristics of river pebbles. The most typical use is that it is adapted to the current artificial sand making industry, and is an alternative to the rod mill sand making machine, impact sand making machine, cone crusher and straight through sand making machine. It is a kind of high performance sand making equipment with world advanced level.
It is suitable for artificial sand making of river pebbles, mountain stones (limestone, granite, basalt, diabase, andesite, etc.), ore tailings and stone chips. It is a kind of equipment for producing construction aggregate, highway road fabric, bedding material, asphalt concrete and cement concrete aggregate.
When the pebble sand making machine is working, the material enters the impact crusher from the feed hopper, and the material is divided into two parts by the divider, one part enters the impeller rotating at high speed from the middle of the divider, and is rapidly accelerated in the impeller, and the speed of the impact pebble sand making machine can reach hundreds of times the acceleration of gravity, and then is ejected from the three evenly distributed flow channels of the impeller at a speed of 60-70 m/s. The sand is firstly ejected from the impeller by the middle of the divider, and then from the middle of the impeller. First of all, a part of the material falling from the divider around the impact crushing, and then together with the impact to the material lining layer in the vortex support cavity, the material lining layer rebound, upward impact to the top of the vortex cavity, and change its direction of motion, deflection downward movement, the material launched from the impeller flow channel to form a continuous material curtain. In this way, a piece of material in the vortex crushing cavity is subjected to two or more times of impact, abrasion and grinding crushing action. The crushed material is discharged from the lower discharge port.
During the whole crushing process, the materials impact and crush each other, not in direct contact with the metal components, but with the material lining layer of impact, friction and crushing, greatly reducing the wear and tear of equipment. The internal structure of the vortex cavity is ingenious, and the air is self-circulating, eliminating dust pollution.
Pebble features and advantages:
1. Novel, unique, simple and reasonable structure, smooth operation, low running cost, the best crushing cavity material impact angle design, less friction with wear-resistant parts.
2. All materials pass through the impeller, stone crushing technology, excellent crushing performance, compared with the same power of the traditional equipment, the output increased by 30% and stable.
3. With the function of shaping, the product is cubic, with high bulk density, good grain shape, gradation, fineness modulus adjustable, especially suitable for artificial sand making and stone shaping.
4. Automatic detection, safety and reliability, set over-vibration display and alarm device, if the equipment occurs bad operation, can issue a warning, so that the equipment to stop working, to protect the purpose of the machine.
5. During the production process, the stone can form a protective base layer, the body of the machine without wear and tear, durable.
6. A small number of easy to wear parts made of special hard wear-resistant material, small size, light weight, easy to replace accessories.
7. Small influence by the moisture content of the material, the water content can reach about 8%.
8. The main bearing is lubricated by thin oil station, and there is a backup oil pump to ensure continuous oil supply to the main machine, which can realize automatic control and accident alarm.
9. The top cover is lifted by hydraulic system, which is easy to operate.
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