The piston type coal washing machine is an energy-saving coal cleaning equipment, mainly used to clean the raw coal, improve the quality and utilization rate of coal. The following analysis will be conducted from the aspects of product structure, working principle, product advantages, and usage scenarios.

　　1. Product structure

　　The piston type coal washing machine is mainly composed of the body, piston, screen, transmission device, and washing water circulation system. The body is the main structure of the entire equipment, used to support and protect other components. The piston is made of special materials, which have a certain degree of elasticity and sealing, and can closely adhere to the sieve to achieve the separation of coal and water. The sieve is mainly used to control the washing particle size, and the transmission device drives the piston to move back and forth through components such as motors and reducers. The washing water circulation system includes sedimentation tanks, water pumps, and pipelines, which are used to recycle water resources.

　　2. Working principle of the product

　　The working principle of a piston type coal washing machine is mainly to use high-pressure water to wash coal, while separating coal and water through the reciprocating motion of the piston. Specifically, when the piston moves forward, high-pressure water enters the washing tank through the sieve and washes the coal. When the piston moves backwards, water flows out through the sieve, carrying away impurities and sediment, thus achieving the separation of coal and water. After multi-level washing, high-quality clean coal and clean waste residue are obtained.

　　3. Product advantages

　　The piston type coal washing machine has the following advantages:

　　*High efficiency: The piston type coal washing machine has a high washing efficiency, which can effectively clean impurities and sediment in coal, improve the quality and utilization rate of coal.

　　*Energy saving: The piston type coal washing machine adopts high-pressure water flushing, which requires less water and saves water resources. At the same time, the transmission system uses excellent materials, ensuring stable operation and reducing maintenance costs.

　　*Easy to operate: The piston type coal washing machine is easy to operate, has a high degree of automation, and can save labor costs.

　　*Environmental protection: The wastewater discharged by the piston coal washing machine can be recycled after treatment, reducing pollution to the environment.

　　4. Usage scenarios

　　The piston type coal washing machine is suitable for the following scenarios:

　　*Raw coal cleaning: The piston type coal washing machine can be used to clean the raw coal, improve the quality and utilization rate of coal.

　　*Waste residue treatment: The piston type coal washing machine can be used to treat industrial waste residue, clean impurities and harmful substances in the waste residue, and achieve the resource utilization of waste residue.

　　*Other applications: The piston type coal washing machine can also be applied to materials that need to be cleaned in fields such as ceramics and minerals, improving the purity and utilization of materials.

　　In summary, piston type coal washing machines have advantages such as energy conservation, easy operation, and environmental protection, and are suitable for raw coal cleaning, waste residue treatment, and other material processing fields that require cleaning. They have important application value and development prospects.