| 摘要 |
<p>PURPOSE: To prevent leakage of disinfection solution from a pump by sealing one end of a cylinder by means of an elastic cover, connecting a discharge tube side piping and a suction side piping to the other end of the cylinder through a check valve, and arranging a spring between the other end of the cylinder and a piston. CONSTITUTION: In a disinfection device which is used for a soil disinfection machine and arranged on a walking type tractor, one end of a suctioning tube 28 extended from a disinfection solution tank is connected to a pump 14. This pump 14 pressurizes a metal plate 43 of an elastic cover 32 against a spring 41 when a pressurizing member 47 is intermittently operated by the rotation of a pump driving cam 45. The elastic cover 32 is displaced in the direction A, and a piston 31 is moved in the same direction. Thus, the disinfection solution in the pump 14 is discharged to a discharging tube 36 through a discharge valve 35, and charged into soil from a charging nozzle. When the piston 31 is moved by means of the spring 41, the disinfection solution is sucked and filled into a cylinder 30.</p> |
