The Specific Regulation For High Pressure Mill
The Specific Regulation for High Pressure Mill
The purpose of the High Pressure Mill is to grind materials in the fields of building materials, mining, metallurgies and chemical industry. The materials should be non-flammable and non-explosive. Examples of the materials are: quartz, feldspar, barite, fluorite, dolomite, garnet, carborundum, bauxite, zircon, marble, calcite, iron ore, rock phosphate, coal, ceram, slag and so on(400 kinds of materials). The materials should have the hardness less than 9.3 in Moh's scale and humidity less than 6 percent. The granularity of the end products can be changed from 30 to 425 meshes.
The High-pressure Suspension Mill has the same working principle as Raymond Mill, but its grinding fitting is furnished with 1000 - 1500 kg pressure spring. When the machine works, the grinding roll, under the action of high pressure spring and centrifugal force, rolls close up to grinding ring, its rolling pressure ratio is 1.2 times of that of Raymond mill given an identical condition, but its output may increase 20% to 30%. when the grinding roller and grinding ring reach a certain degree of abrasion, please adjust the length of high-pressure spring to keep the constant grinding pressure between grinding roller and grinding ring, so as to ensure a stable output and fineness.
The regulation of hydraulic system
The main hydraulic system set up two relief valve oil on the road, a group called the relief valve, which determines the rated working pressure; the other as safety valves, which ensure the implementation of components and sub-circuit in the external force , the pressure does not exceed set safety value.
Specific regulation as follows:
1. Loosen the lock nut relief valve, start the motor, pulling the lever for valve (ie valve stem in the left frame), disc drive cylinder piston rod recovery, slowly tighten the relief valve adjustment bar, observation tank recovery situation, to meet the needs of the Vertical roller mill, at which point the system pressure gauge displays the actual value of work pressure, the pressure is stable after you record the pressure.
2. Shut down all the relief valve will tighten, loosen the valve lock nut, start the motor, according to just pressure, it is set pressure safety valve (pressure than the record high 3-4Mpa). Tighten the valve nut.
3. According to records of the pressure relief valve set to re-adjust and tighten the pressure relief valve nuts.
Hydraulic equipment system in the Vertical roller mill is an important component as well as failure of one of the most vulnerable link in the system in strict accordance with the provisions of the instructions for use, proper use and maintenance of hydraulic systems is to reduce the system failure, system trouble-free use of extended time, security production, improve the effectiveness of protection.
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by: nicole
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