In recent years, in order to adapt to the new development of internal combustion engines, there have been many new changes in the internal combustion engine lubricants. New lubricating oil products have been continuously introduced, and imported products have flooded the market. The original brand numbers have changed, and old varieties have been phased out. There are many varieties, grades, and specifications of internal-combustion engine oil in the oil market. In the face of new concepts and new situations, how to correctly select internal combustion engine oils has important practical significance for improving engine dynamics and economy, reducing mechanical failures, prolonging the service life of machinery, and saving fuel and lubricants. Internal-combustion engine lubricating oil, also known as engine oil, is often referred to as oil. It is widely used in mobile and other stationary agricultural machinery engines such as tractors, automobiles and agricultural transporters. The internal combustion engine oil must have suitable viscosity and good viscosity-temperature resistance, oxidation stability, abrasion resistance, anti-corrosion and anti-foam properties. Only by properly selecting the internal combustion engine oil according to actual conditions can the oil lubrication, cooling, cleaning, sealing, and rust prevention (protection) be fully utilized to ensure the normal operation of the engine. According to the type of engine divided by engine type can be divided into gasoline engine oil, referred to as gasoline engine oil (including four-stroke gasoline engine oil and two-stroke gasoline engine oil); diesel engine oil used, referred to as diesel engine oil (including tractors, agricultural transport aircraft, diesel vehicles and fixed Engine oil used in diesel engine); general engine oil for gasoline engine and diesel engine, and steam engine oil for general use. According to the season can be divided into single-class oil and multi-grade oil two categories. Single-grade oil can only be applied to a season or an area, such as oil used in summer and motor oil in winter; multi-grade oil can be used in different regions in different seasons. According to the viscosity of oil, China has entered the WTO, and all walks of life are gradually in line with international standards. In order to meet the needs of production and use, and in order to facilitate international technical exchanges and foreign trade, China has made new regulations on the classification standards and product grades of internal combustion engine oil in light of the actual conditions of engine manufacturing and lubricant production in light of international standards.
There have two kind of rotary lobe pump:1. stainless steel food grade sanitary rotary lobe pump. 2. industrial rotary lobe pump.
1. food grade sanitary rotary lobe pump beed used to transfer many kind of food liquid, like: juice, milk, beer, cream, honey etc.
2. industrial rotary lobe pump beed used to transfer bitumen, glue, grease etc high viscosity liquid.
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