Vertical mill for sand making

Abstract

The invention relates to a vertical mill for sand making. The vertical mill comprises a shell and a millstone transversely arranged at the bottom in the shell, and further comprises at least two milling assemblies. The two milling assemblies are arranged on the shell along the circumferential direction at equal angles, and each milling assembly comprises a rack, a pressurizing cylinder, a rocker arm, a milling roller and a main shaft. The racks are arranged on the outer side of the shell, the rocker arms are rotatably connected to the upper ends of the racks, telescopic ends of the pressurizing cylinders are rotatably connected to the lower ends of the rocker arms, fixed ends of the pressurizing cylinders are rotatably connected to the lower ends of the racks, the main shafts are insertedinto the shell, and outer ends of the main shafts are fixed to the upper ends of the rocker arms. The grinding rollers are concentrically and rotatably arranged at the inner ends of the main shafts ina sleeving manner and are arranged above the millstone. According to the vertical mill for sand making, raw materials are ground through the interaction of the grinding rollers and the millstone, andnoise and vibration are small; the energy consumption is reduced, the service life is prolonged, the production cost is reduced, meanwhile, the sand yield of finished sand is increased, and the modulus of the finished sand is reduced; and in addition, the vertical mill can also be used for raw materials with more powder so as to expand the application range.

Description

technical field [0001] The invention relates to a vertical mill for sand making. Background technique [0002] At present, the machine-made sand production industry generally adopts the method of crushing raw materials to produce machine-made sand, and the most important raw material crushing equipment is the vertical shaft impact crusher. , using the kinetic energy loss of raw materials to achieve crushing; but the vertical shaft impact crusher will generate a large impact force when it is working, which will lead to a short life of the wear-resistant parts, so the production cost is high; at the same time, high energy consumption, noise and vibration Both are large, and the finished sand has low sand yield and high modulus; in addition, it cannot be applied to raw materials with more powder, and the scope of application is small, which needs further improvement. Contents of the invention [0003] Aiming at the present situation of the above-mentioned prior art, the tech...

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Problems solved by technology

[0002] At present, the machine-made sand production industry generally adopts the method of crushing raw materials to produce machine-made sand, and the most important raw material crushing equipment is the vertical shaft impact crusher. , using the kinetic energy loss of raw materials to achieve crushing; but the vertical shaft impact crusher will generate a large impact force when it is working, which will lead to a short life of the wear-resistant parts, so the production cost is high; at the same time, high energy consumption, noise and vibration Both are relatively large, and the finished sand has a low sand yield and a high modulus; in addition, it cannot be applied to raw materials with a lot of powder, and the scope of application is small, which needs further improvement

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