Water adding equipment of powder extensometer

The utility model discloses water adding equipment of a powder stretching instrument, which comprises an extraction structure, a bracket, three groups of putting structures and a four-way pipe, the bracket is detachably arranged on the extraction structure, and the three groups of putting structures are respectively and fixedly arranged on the bracket at equal intervals. The utility model has the beneficial effects that the electric push rod drives the guiding and conveying column to adjust the communication direction of the conveying interface of the one-way shell, so that extraction or lower-row supply can be selected; in this way, the system has high flexibility, different water supply modes can be achieved under different requirements, and water can be supplied to multiple devices; according to requirements, one pumping cylinder, two pumping cylinders or three pumping cylinders can be separately controlled to work together, so that the water supply amount is changed, meanwhile, adjustment can be conducted