Liquid nitrogen flower and fruit thinning device

The invention makes public a liquid nitrogen flower and fruit thinning device, which comprises a liquid nitrogen storage tank, wherein the upper surfaces of the liquid nitrogen storage tank are respectively provided with a liquid nitrogen injection pipe and a piston device. The bottom of the liquid nitrogen storage tank is provided with the first liquid outlet, which is connected with the handheldliquid nitrogen spray gun through the first connecting pipe. The handheld liquid nitrogen spray gun is also provided with a lengthening device, the other end of which is sequentially provided with arubber tube and a freezing head. The rubber tube is connected with the liquid spraying outlet of the handheld liquid nitrogen spray gun through the second connecting pipe. The lengthening device is also provided with a control device for adjusting the length of the rod. The principle of liquid nitrogen gasification to refrigeration is fully utilized on the liquid nitrogen flower and fruit thinningdevice that liquid nitroge