Automatic change control circuit of powder sampler

The utility model discloses an automatic change control circuit of powder sampler, aim at overcomes complicated, not enough with the mechanical structure separation of current automatic sampler circuit structure, disclose a simple structure, with the good control circuit of the harmonious linkage nature of mechanical structure. Its technical scheme does: including coupleing each other in total control module, sample control module and the upset control module of power, total control module is including scram switch and total timer of the hookup of establishing ties, the sampling control module is including the sample timing unit and the spacing unit of sample of parallelly connected hookup, upset control module is by establish ties behind the hookup cylinder normally open contact of limit switch and sample timer of interval timer and upset solenoid valve parallelly connected back. The sampler is once got and is expected that the stroke includes two actions of level and upset, settles material or sample function through level motion realization, with in the sealed storage device of sample transport entering who takes out, realizes taking a sample under the negative pressure after the hopper upset. The utility model discloses structure control is accurate, easy operation.