The life cycle of the cutter suction dredger pump:
1. High-luo alloy dredging pump: This dredging pump adopts high-luo material with a wear resistance coefficient. One impeller (referring to a wheel with moving blades) can pump 200,000 cubic meters of mud;
2. Cast steel dredging pump: This dredging pump is the next best one. It uses cast steel material. One impeller (referring to a wheel with moving blades) can pump 40,000 cubic meters of mud;
3. Nodular cast iron dredging pump: ordinary material, one impeller (referring to a wheel with moving blades) can pump 6000 cubic meters of mud.
What are the requirements of lubricating oil for grain suction dredgers:
1. The volume of the dredging machinery and the volume of the oil tank are small, the amount of lubricating oil installed is also small, and the oil temperature is higher during work, which requires the lubricating oil to have better thermal stability (explanation: stable and stable; no change ) And antioxidant properties.
2. Because the river water environment is harsh, coal dust, rock dust, and water are more, the lubricating oil is inevitably contaminated by these impurities, so the lubricating oil of the grain suction dredger is required to have better anti-rust, anti-corrosion and anti-emulsification Performance: When lubricating oil is polluted, its performance will not change much, that is, its sensitivity to pollution should be small.
3. The temperature of the open-air machinery varies greatly in winter and summer, and the temperature difference between day and night in some areas is also large. Therefore, the viscosity of lubricating oil is required to be small with temperature. It is necessary to avoid that the viscosity of the oil becomes too low when the temperature is high, so that it cannot be formed. The lubricating film can't play the lubricating effect as it should, and it is necessary to avoid too high viscosity when the temperature is low, which will cause difficulty in starting and running.
4. For certain dredging machinery and equipment (composition: drive device, transmission device, etc.), especially some machinery used in mines prone to fires and accidents, it is required to use a lubricant with good flame resistance (function: can reduce or Avoid friction and wear) (anti-combustible fluid), can not use flammable mineral oil.
5. It is required that the lubricant (function: can reduce or avoid friction and wear) has good adaptability to the seal to avoid damage to the seal.
