For the situation where the diaphragm of the air operated diaphragm pumps imported for the wet-process phosphoric acid purification unit is easily damaged,and there are no spares in storage,which has created significant difficulty for the production,the research and development of PTFE impact molding diaphragm is proposed.

Through transformation of chemical production device,air operated diaphragm pumps have been well applied,not only the disable tank of raw materials has been reused to ensure that the equipment to run the economy and increase the plant capacity and cost-effective,but also changed the spill phenomenon.