(1) ground flushing spray sterilizer 94×P220 flushing spray sterilizer, when working, the diesel motor starts to drive the piston and diaphragm to reciprocate. Clear water or liquid medicine is first sucked into the pump room, and then discharged under pressure through the spray gun. The working pressure of this machine is 15 ~ 20kg/cm2, the flow rate is 20l/min, and the washing range is 12 ~ 14m. It is a good cleaning and disinfection equipment for industrialized pig farms. Its main advantages are: (1) high-pressure washing spray, thorough washing, saving water and liquid medicine; ② The spray gun is adjustable, which can be cleaned and sprayed; ③ Piston diaphragm pump is reliable and durable; ④ Small size, flexibility and convenient operation; (5) high work efficiency and labor saving. (2) The average sterilization rate of drugs used in flame sterilizer is only 84%, which can't meet the requirement of sterilization rate above 95%. Therefore, general pig farms have to be disinfected twice with drugs, which increases the workload and operating costs. In addition, there are many residues in drug disinfection, and flame disinfection overcomes the above shortcomings. The flame sterilizer uses kerosene to atomize at high temperature, and the intense combustion generates high-temperature flame to instantly burn the surfaces of pigsty, feeding trough and other equipment and buildings in the house, so as to achieve the purpose of disinfection and purification such as killing bacteria, viruses and eggs. Its advantages are: ① the sterilization rate is as high as 97%; ② Convenient operation, high efficiency, low consumption and low cost; (3) After disinfection, the instruments and pens are dry, and there is no liquid residue.