Fluid spray device

The invention discloses a fluid spraying device, which is used for spraying fluid to a workpiece positioned on a supporting table, and is characterized by comprising a booster pump, a support frame, a weight sensor and a controller, wherein a pipeline is arranged on the support frame; at least one nozzle is arranged on the pipeline; the booster pump comprises an input connected to a fluid source and an output end connected to a pipeline on the support frame; the weight sensor is arranged in the supporting table and is used for a signal which represents the current weight value of the workpiece to the controller; a preset weight value is stored in the controller; and the controller is used for comparing the current weight value with the preset weight value and transmitting a start or stop instruction to the booster pump according to the comparison result. The fluid spraying device is high in degree of automation and can automatically and rotationally spray fluid to the surface of the workpiece. In addition, a plurality of nozzles with adjustable angles can be arranged, and the calibers of the nozzles are small; and therefore, automatic and uniform spraying can be realized.