Use the concave part of the bucket to contact the water outlet to be dredged, so as to ensure that it is completely sealed and there is no air leakage, and it is best to add water and not pass through the rubber part. Press hard for many times and then pull it out until the pressure is obviously reduced or you hear a "splash" to indicate successful dredging.
block the overflow hole of the pool with a wet cloth, and the bowl-shaped rubber head is pressed downwards against the sewer crossing, or the air is forcibly pushed downwards continuously, or the air is forcibly pushed down, and when the rubber head is flattened, it is quickly pulled back, resulting in a vacuum state. The purpose is to loosen or disperse the blockage in the sewer pipe.
Extended information
In p>1777, Samuel prosser of England invented the plunger toilet and obtained a patent. This is a new toilet model, which uses a piston to flush the toilet.
The exact date of toilet plunger's invention and the inventor are unknown. According to researchers from new york University, there is no relevant patent record about its inventor. Jeffrey Gundersen may be the known inventor of modern toilet plunger.
It is reasonable to say that toilet plunger may have invented it between 185 and 19, when the technology of practical wood and synthetic rubber was very popular. The strong evidence to support this statement is that the rubber sucker was invented in the 195s. Therefore, modern toilet plunger was invented at least after 185.
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