When you go out, you must have had the experience of wanting to get in the car quickly to avoid the cold wind. But when your hand touches the door handle, there is a “pop” and sparks suddenly appear on your fingertips, right? This is static electricity.
The rubber hose is made of resin, and frictional electrification will also occur between it and the fluid. The same way clothing attracts hair, the hose’s resin attracts fluids. This phenomenon is particularly significant when conveying powder particles. The fluid stuffed inside the industrial hose will stick firmly to the inner wall of the hose. This hinders fluid transport.
However, it is the static electricity generated on the outside of the hose that is dangerous. In the case of high humidity, the static electricity generated will quickly move into the highly conductive water molecules in the air. However, in the dry environment of winter, the static electricity generated can only accumulate on the surface of the resin. Afterwards, through the air, the accumulated static electricity is transferred to the human body or objects that are easy to conduct electricity at once. This phenomenon is the “discharge” phenomenon. That is the “pop” phenomenon just described. The electric light produced by the discharge can even be clearly seen in dark places. If you are close to highly flammable items, it may cause a serious accident such as a fire. Therefore, never underestimate the problem of static electricity.
So how to solve the static electricity problem in rubber hose?
As long as there is friction, static electricity will be generated. It is therefore impossible to avoid the generation of static electricity. However, we can solve problems like “too much static electricity”. Just make a dedicated channel for static electricity.
There are two specific methods: first, use anti-static hose. Second, install conductors such as ground wires in the hose.
The rubber pipe of the first method is equipped with an ingredient that easily discharges in the air. However, although this method is simple, it cannot 100% prevent the generation of static electricity. And the effects are not long-lasting either. As a result, hoses are constantly exposed to dust and dirt. The frequency of replacement is getting higher and higher.
Although method 2 can eliminate static electricity, its effect is relatively stable and long-lasting. However, if the conductors are densely packed inside the hose, the machinery must also perform corresponding grounding and other complex and cumbersome construction operations.