During normal production of the vertical shaft impact crusher(VSI crusher), shut down the vertical shaft impact crusher and open the cover periodically to inspect internal abrasion inside its crushing chamber according to the compressive strength of processed materials:
Low hardness (50~100 MPa): Inspection once every 50 to 72 hours;
Medium hardness (100~200 MPa): Inspection once every 30 to 48 hours;
Extra-high hardness (200~300 MPa and above): Mandatory inspection within every 8 hours.
85 series VSI crusher (single motor)
85 series VSI crusher (twin motor)
Key wear-resistant components of the vertical shaft impact crusher to be examined include the feed eye ring, distributor cone, distributor plate, upper & lower flow guide plates, upper & lower protective liners, impact plates, rotor tips and anvils. Replace these parts immediately when their abrasion approaches the rotor main body of the vertical shaft impact crusher. These wear parts are made of high-abrasion-resistant alloy; unauthorized welding or repairing is strictly prohibited, as improper welding will lead to spontaneous fracture and severe safety hazards, and further cause abrasion damage to the rotor matrix of the vertical shaft impact crusher. It is recommended to replace all wear-resistant fittings simultaneously to ensure identical component weight and maintain optimal rotor dynamic balance for the vertical shaft impact crusher. If the rotor body of the vertical shaft impact crusher suffers abrasion, replace it promptly or arrange professional repair with the manufacturer. Without written approval from our company, private fabrication or repair of the rotor is forbidden, and the operator shall bear full liability for all consequent accidents and losses related to the vertical shaft impact crusher.
Inner Cavity of VSI crusher
For the lubrication pump station matched with vsi crusher: Within the first 100 working hours, replace the lubricating oil together with the oil inlet filter element, and thoroughly clean the oil return filter element of the vsi crusher. Afterwards, replace the filter elements and lubricant of the vsi crusher every 1000 working hours; disassemble and clean the main shaft bearings of the vsi crusher every 2000 working hours, and install brand-new bearings for the vsi crusher after 7200 working hours. The main shaft assembly of the vsi crusher adopts fixed upper bearing and double-bearing locked lower bearing structure; the pulley shall rotate flexibly by manual rotation after assembly on the vsi crusher. The inlet filter of the vsi crusher must be replaced within the initial 100 operating hours, and the return filter shall be inspected and cleaned regularly to guarantee smooth oil circulation for the vsi crusher.
Rotor of the sand making equipment
Select lubricants for sand making machine based on ambient temperature. Rolling bearings of the vsi sand making machine generally adopt mineral oils such as spindle oil, machine oil and turbine oil. For working conditions above 150℃ or below -30℃, synthetic oils including diester oil, silicone oil and fluorocarbon oil shall be applied to the sand making machine. Diesel engine oil and anti-wear hydraulic oil are preferred for most working scenarios of the sand making machine. Under 20℃ ambient temperature, CD40 diesel engine oil or Grade 150~220 medium-load gear oil (Great Wall 4406 / 4407) is applicable for the sand making machine. Choose lubricant with higher viscosity under higher temperature and lower viscosity under lower temperature for the sand making machine. Insufficient viscosity will fail to form intact oil film and scratch bearing surfaces of the sand making machine; excessive viscosity increases flow resistance, raises friction and accelerates temperature rise on the sand making machine.
Adjust the V-belt tension of vsi sand making machine properly: the allowable elongation after tensioning ranges from 15-25 mm with even force distribution on the vsi sand making machine. For dual-motor driven vsi sand making machine units, match V-belts into two groups with minimal length difference, and adjust the system to ensure the current difference between two motors of the vsi sand making machine does not exceed 20 Amperes.
Note: New belts for the vsi sand making machine require three rounds of tension adjustment. Tighten for the first time, perform secondary tightening within 50 running hours, then conduct inspection and fine-tuning after another 50~100 hours of operation on the vsi sand making machine.
1000 series VSI crusher
1200 series VSI crusher
9100 series sand making equipment
Strict safety protocols must be followed for all operation of sand making equipment. This high-speed rotating sand making equipment demands strict safety management during its whole service cycle. Keep all personnel far away from running sand making equipment. Any maintenance or overhaul work on sand making equipment can only be carried out after complete shutdown of the sand making equipment to comply with all safety production regulations for the sand making equipment.