Breaking valve for mixing feeder

The utility model discloses a vacuum breaking valve for a mixing feeding machine, which comprises an air cylinder and a base, a driving rod of the air cylinder is inserted into the base downwards, a gland is arranged at the top end of the driving rod of the air cylinder, the base is a hollow pipe, a sealing cover is arranged at the upper end of the base, the air cylinder is arranged on the sealing cover, a top block is arranged in the base, and the top block is arranged on the base. The lower end of the base is provided with a center hole for the ejector block to enter and exit, and the bottom end of the ejector block is conical. The vacuum breaking valve has the advantages that the efficiency of the vacuum breaking valve is improved through the arrangement of the conical ejector block, the pipe breaking effect is good, and the structure becomes simple. 本实用新型公开了一种用于混合上料机的破空阀，包括气缸和底座，所述气缸的驱动杆向下插入所述底座设置，所述气缸的驱动杆顶端设有压盖，所述底座为中空管且上端有密封盖，气缸安装在密封盖上，所述底座内设有顶块，所述底座下端设有供顶块进出的中心孔，所述顶块的底端设置为圆锥形。本实用新型的有益效果是：本实用新型通过设置锥形顶块，