Our factory has implemented methods such as cyclic oil change, sampling and oil change, and test tube sampling for oil change. These methods have their own shortcomings. Through practice, our factory has made the oil sample tool from the bottom of the fuel tank and oil drum, which is introduced as follows: 1. Take the oil sample tool and use the oil sample tool as shown in the figure. It consists of a valve core 1, a bonnet 2, a valve body 6, and the like. The valve body 6 is made of transparent plexiglass. When in use, the operating lever 9 is hand-held and the sampling tool is inserted into any part of the tank (40 mm space). Before the tool has touched the bottom of the box, it is closed to prevent oil from entering the valve cavity. After touching the bottom of the box, the valve core is forced to move backward.
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