The working process of the coal duster:
When the coal dusting machine is in operation, the piston assembly moves forward within the pump cylinder. This motion pushes the liquid located in front of the piston, causing the piston rubber bowl and its support to move backward. The flat surface of the support is attached to a flat platform, preventing the liquid from being recirculated. As the piston is compressed, it forces the liquid discharge ring into the air chamber, where it is then expelled through the spray nozzle. When the piston assembly moves backward, the piston rubber bowl and support are pushed forward again. During this movement, liquid is drawn in between the flat platform and the support. The rubber bowl holder and the triangular support body have a passage that allows the liquid to flow from the front into the front of the piston assembly. At this point, the chemical liquid is being sucked into the system. To control the spraying pressure, a pressure regulating safety valve is used. If the liquid pressure exceeds the spring pressure that has been set, the chemical liquid top-opening safety valve opens, allowing the liquid to return to the rear of the piston assembly through the return pipe. Below the pressure regulating safety valve, there is a decompression handle. This allows the pressure on the safety valve body, which is controlled by the spring, to be released, enabling the liquid to flow back. The water pipe is heavily loaded, causing the pressure in the system to drop quickly to about 5 kg/min. A pressure indicator device shows the operating pressure within the system during use. This ensures that the machine runs efficiently and safely, with real-time monitoring of key performance parameters.
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