Sampling device suitable for feed-grade calcium hydrophosphate liquid

The invention provides a feed-grade calcium hydrophosphate liquid sampling device which comprises an acid storage kettle, a driving device is arranged on the acid storage kettle, a communicated runner pipe is arranged on one side of the driving device, an extraction valve is arranged on the runner pipe, a detachable sampling bottle is arranged at one end of the runner pipe, an overflow pipe is arranged on the sampling bottle and communicated with an acid preparation tank, and the extraction valve is arranged on the overflow pipe. And an acid inlet pipe is arranged on the acid storage kettle and is communicated with the acid preparation tank. The whole device avoids repeated opening and closing of the acid storage kettle in the sampling process, time and labor are saved, when the acid liquid in the acid storage kettle is enough, it can be ensured that the sampling bottle is full, redundant acid liquid flows into the acid preparation tank, sampling deviation is reduced, meanwhile, the safety risk that the acid