Needle tube type artificial rainfall simulation device

The utility model provides a needle tube type artificial rainfall simulation device which comprises a water supply system, a rainfall system, an automatic control system, a control system, an observation system, a drainage system and a support. The water supply system comprises a water collection tank, a water collection tank water inlet pipe, a limiting water pipe, a water outlet pipe and a filter; the rainfall system comprises a rainfall system water inlet pipe, a rain box, a flow dividing cylinder, a flow dividing pipe and a syringe needle. The automatic control system comprises two groupsof liquid pressurizers and a timing controller; the control system comprises two flow meters, two control knobs and a flow meter water inlet pipe; the observation system comprises an organic glass disc with holes and an electric turntable; the drainage system comprises a water collection cylinder and a drainage pipe. The device can automatically control rainfall duration, rainfall cycle and rainfall times, can accurately