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Grinder Installation

Grinder Installation

Grinding Mill Installation

Preparation Before Installation

  • 1, the grinding mill shall be stored and protected well before it is transported to the site for installation. The surface exposing to the air shall be coated with the rustproof grease in order to resist the weather condition and prevent rusting of the machine from water penetration. A maintenance system shall be established.
  • 2, according to the dimensions shown in the installation diagram, the workshop and foundation must have enough height and suitable installation position. The foundation of the grinding mill shall be constructed with the high-grade cement and reinforcing steel bars. The wiring pipes and cable ditches must be well prepared in advance. When the concrete foundation is completed. 15 days is required for maintenance period.
  • 3, a lifting facility with the capacity of 5-6 tons must be requipped for repairs and maintenance.
  • 4, if the grinding mill has been operated for over six months since it was bought from the grinding mill manufacture, the central shaft system of the main frame, transmission device grinding rollers, and the oil tank of the classifier, etc. must be cleaned and examined. After completion of cleaning and checking, these components shall be lubricated sufficiently.

Installation Of The Grinding Mill

  • 1, firstly, the bottom base of the transmission device is craned into the installation pit, and then the pit is filled and leveled. Pay attention to keeping a suitable height and then adjust the upper plane A with a level gauge, meanwhile put the foundation bolts in the performed openings.
  • 2, installation of the main frame. Before installation, the shock roof rubber pads shall be placed at the bottom plane of the bottom case contacting the B plane of the bottom case with a frame level gauge. The adjustment points are the four points on the cross lines. Meanwhile regulate the two half-clutches of C and D with their axial difference less than 0.20mm; the non-parallel degree between E1-E2 shall not exceed 0.10mm; and the gap between E1 and E2 shall be kept within 5-8mm.
  • 3, the piping system shall be installed with its location and height in conformity with the Master Drawing. Any random change of its location and height is prohibited. All the pipe connections must be sealed well and after fixing no air leakage is permitted. The electrical device must be correct and reliable. A trial operation must be carried out after installation of all the parts.

Grinding Mill Debugging

  • 1, if the working height of the pressure springs (the effective height after the spring is compressed) is lower, the pressure that the grinding roller exerts on the material is higher and the output is higher. However, according to the loading condition of the main motor and while the grinding roller is worn smaller, the spring is compressed gradually. The working height of the pressure spring shall be more controlled within the range of 145-160mm.
  • 2, no-loading trial operation. Before the trial operation, the grinding rollers shall be encircled and fixed by steel wires to avoid the contacting and bumping between the rollers and grinding rings. The no-loading trial operation of the main frame must last not less than one hour. The main frame shall run smoothly and stably.
  • 3, The temperature of the oil in the tank shall not be over 80 C, and its temperature rise shall not exceed 40 C. as for the rotation direction of the main frame and classifier,, the blower shall be turned on without load. You can load until the blower runs normally. Then observe whether it runs smoothly steadily without abnormal noises and vibration. The highest temperature of its rolling bearings shall not be over 70C, and its temperature rise shall not surpass 35C.
  • 4, the trial operation without load shall last not less than 8 hours. After the normal operation, the whole machine shall be without abnormal noises and air leakage in pipe connections. Then fix tightly all the fastening parts again before the grinding mill is put into normal operation.

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