Review of the impact crushing Xi day light

Just the mention of mineral processing equipment, will be referred to as a crusher, and when it comes to the crusher, will be provided to counterattack crusher, why, because there is also a story, it clarifies the current domestic crusher of origin, as well as the embodiment of the country life of the endless spirit of independent research and development. It is because of these, we just a pick a broke in various industries, there is no domestic machinery myth, broke the large equipment can only rely on imports and would also like to pay a high maintenance cost of the status quo.

At the end of eighty's, our country according to needs, the introduction of KHD type hard rock crusher, to fill the domestic blank. But more than twenty years behind. Homebred hard rock counterattack type crusher, the core parts plate hammer dependence on imports, domestic plate hammer during the "Eighth Five-Year Plan" period in the column for the ministerial level scientific research projects, after the success of the project, the domestic plate hammer not only replace imported, and have been exported to Europe, America, Japan and other countries. Synergists is the breakthrough of wear-resistant materials, hard rock crusher menace, highly praise of customers at home and abroad, through a series of improvements to quantify the production, but also for China's import and export, and make a contribution. For example: the Ministry of communications for improve the quality of highway construction in China, has put forward concrete pavement stone crushing station research projects, and included in the national "Eighth Five Year Plan" key project. The trial equipment of the project failed in the use of a site in the northeast. And the user to switch to hard rock impact crusher after the production of stone, fully meet the requirements of the highway pavement concrete. So the hard rock crusher reputation. At the time of Shanghai if the unit to bid to undertake the project, the premise is to consider whether there is such a broken equipment, but also as a prerequisite for the tender to undertake the construction of the necessary conditions. According to statistics, in the highway construction of the various provinces and cities nationwide are already the hard rock counterattack type crusher as a stone pavement preparation equipment, to crush hard material compressive strength up to 300 MPa of basalt, andesite, and achieve the graded stone 19.6mm below. The percentage content of the needle is less than 10%. At present, there are more than 400 units in various parts of the use, not only to solve the highway construction in a difficult problem, but also blocked the import.

So what is the principle of this efficient crusher?

Impact crusher is a kind of crushing machine which can use the impact energy to break the material. When the machine is working, under the driving of the motor rotor high-speed rotation, the material into the plate hammer function zone, and the rotor plate hammer impact crusher, then was thrown to counterattack device broken again, and then from the back lining board to board hammer area to break, this process is repeated, material from large to small into one, two, three back cavity repeated broken, until the material is crushed to the required size, from the discharge port discharge. The gap between the counter frame and the rotor can be adjusted to change the particle size and the shape of the material. Stone from the upper part of the machine directly into the high-speed rotation of the turntable, in under the action of centrifugal force, and another part of the umbrella type shunt in the flying rocks around the turntable to produce high-speed collisions and high density of crushing, stone in the fight against each other, will between the turntable and the chassis in the formation of vortex motion caused by repeatedly against each other, friction, grinding, direct discharge from the bottom. To form a closed circuit, the size of the required particle size is controlled by the screening equipment.