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China VSI Vertical Shaft Impact Crusher - Superior Sand Making Power from Reliable Suppliers and Factory
Working Principle
In Kemai VSI series vertical shaft impact crusher, material of high speed is crushed by self-broken mutual friction. This type of impact crusher can not only be used for crushing but also for shaping of stones.
Operation Methods: According to feeding method, the working of vertical shaft impact crusher can be divided into central feeding and central with cascade feeding; while the crushing method can be divided into “rock on rock” and “rock on iron” according to material compressive strength. Therefore, there are four working forms: central with cascade feeding “rock on rock” and “rock on iron”; central feeding “rock on rock” and “rock on iron”.
Daily maintenance of VSI series vertical shaft impact crusher
1
There should be special person responsible for the machine. Operators should be trained before operation, and also understand technical performance and familiar with the rules.
2
Thin oil station use 35# bearing oil, oil amount is 150-190L. Change oil in 200hours first time, and then change oil every 1000 hours. When change oil, open the oil pipe, clean and dry it, change damaged seal mat.
3
Driving V belt tensioning is moderate, make sure V belt strain evenly, motors in two sides are imbalanced, the electricity current is not more than 15A.
4
Check hydraulic system frequently, maintain immediately if any abnormal conditions.
5
Add calcium base grease to seal ring under bearing chamber regularly.
6
Open the bearing tube and clean in 1000 hour’s normal running first time.
Technical parameters of VSI series vertical shaft impact crusher
| Model | VSI7611 | VSI8518 | VSI9526 | VSI1140 | |
|---|---|---|---|---|---|
| Capacity (t/h) | Central feeding with circular cascade feeding | 120-180 | 200-260 | 300-380 | 450-520 |
| Fully central feeding | 60-90 | 100-130 | 150-190 | 225-260 | |
| Max. feeding size (mm) | Soft material | < 35 | < 40 | < 45 | < 50 |
| Hard material | < 30 | < 35 | < 40 | < 45 | |
| Rotation speed (r/min) | 1700-1890 | 1520-1690 | 1360-1510 | 1180-1310 | |
| Model of Motor | Y250M-4 | Y280M-4 | Y315M-4 | Y315L2-4 | |
| Double motor power (KW) | 2×55 | 2×90 | 2×132 | 2×200 | |
| Overall dimension (L×W×H) (mm) | 3600×2248×2533 | 4378×2350×2667 | 4640×2650×2800 | 5570×2900×3000 | |
| Weight (t) | 10 | 12 | 16 | 25.6 | |
| Power supply | AC380V,50Hz | ||||
| Lubrication Hydraulic Pressure station | Rate of flow (L/min) | 6 | |||
| Double oil pumps motor's power (KW) | 2×0.31 | ||||
| Safety Assurance | Double oil pumps assure enough oil supply; Switch off automatically without oil flow or oil pressure. Lower the temperature with cool water in summer raise the temperature with motor in winter. | ||||
| Overall dimension (L×W×H) (mm) | 820×520×1270 | ||||
| Power of oil Tank Heater (kW) | 2 | ||||
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Frequently Asked Questions
What is the working principle of the VSI series vertical shaft impact crusher?
It operates on the principle of self-broken mutual friction where high-speed materials crush against each other. This process is highly effective for both crushing and shaping stones.
What are the different feeding and crushing methods available?
The crusher features two feeding methods: central feeding and central with cascade feeding. Depending on the material's compressive strength, the crushing methods are divided into "rock on rock" and "rock on iron", resulting in four distinct working combinations.
What type of oil should be used for the lubrication system and how often should it be changed?
The thin oil station requires 35# bearing oil with a capacity of 150-190L. The first oil change must be done after 200 hours of operation, and subsequent changes should occur every 1000 hours.
How is the tension of the driving V-belt maintained?
The driving V-belt tensioning must be moderate to ensure even strain. The motors on both sides should be balanced, ensuring the electricity current difference is not more than 15A.
What safety mechanisms does the lubrication hydraulic pressure station have?
The station features double oil pumps to guarantee sufficient oil supply. It automatically switches off if there is no oil flow or pressure. Additionally, it uses cooling water to lower temperatures in summer and a motor heater to raise temperatures in winter.
When should the bearing tube be opened and cleaned?
The bearing tube should be opened and cleaned for the first time after 1000 hours of normal running. Regular maintenance also includes adding calcium base grease to the seal ring under the bearing chamber.