Method and safety device for allowing the spontaneous release of bodies and objects given to blocking a pump suction point

摘要

Safety device, able to release spontaneously objects causing a suction point (18) of a pump (12) to become blocked, comprising a calibratable safety valve (24) which opens, when, on account of the point (18) being blocked, a drop in pressure above an interference value (Di) is formed in the pump (12), allowing outside air to enter the body cavity of said pump (12) so as to cause its temporary disengagement with a lowering of the drop in pressure to values so low as to allow a drop release of the body or object which has caused said suction point (18) to become blocked.