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In the oil fields, people can often see rows of mechanical devices ups and downs rhythmically, as if they are kowtowing. This is commonly known as the “kowtow machine”, the scientific name beam pump. It is one of the main types of pumping units currently used in oil fields and plays a very important role in the field of oil extraction.

Pumping unit is a ground-driven equipment with rod pumping. According to the basic structure of the oil pumping unit, the oil pumping unit can be divided into two categories: Free beam type and non-free beam type. The most widely used at home and abroad is the free beam type oil pumping unit (commonly known as kowtow machine). So today, let's take a closer look at the different types of beam-type pumps that can be used on rod pumps.