The service life of the diaphragm pump diaphragm is affected by many factors. The following are some key factors summarized:

Mistakes during operation, such as not clearing all the air in the diaphragm chamber, will increase the stress on the diaphragm, and in severe cases, the diaphragm may be broken. In addition, illegal operations, such as raising the feed temperature to a value outside the specified value, will accelerate the aging of the diaphragm. If steam cannons are present in the slurry, fatigue damage may occur

Unstable factors during feeding, such as unstable feeding, will cause the material level of the feeding compensator to be lower than one meter to two meters, and the slurry will form a gap, which may cause a shortage of material. In severe cases, the diaphragm will appear. Fatigue or breakdown occurs.

The life of the pump tube and output of a diaphragm pump will also be adversely affected by the temperature of the liquid medium. The diaphragm that has been operating in a conveying medium with a large solid particle concentration for a long time will wear violently, especially when the slurry contains large particles. Some conveying media are highly corrosive and have high temperatures, which will seriously affect the life of the diaphragm .

The improvement of diaphragm materials is generally based on improving the formula. According to the conditions of the conveying medium, select a formula based on constant stress and determined by temperature, alkali resistance, oil resistance, etc., or a formula based on constant strain and determined by temperature, alkali resistance, oil resistance, etc. 

During the uneven deformation process of the diaphragm, there is only bending deformation and no tensile deformation. According to the elastic thin shell moment-less theory, the internal force generated by this bending deformation is small or even negligible. This is the fundamental reason for the long life of the diaphragm. Among currently used diaphragm pumps, diaphragms with a frustum shape, good toughness, and thin thickness are generally used, which can try to meet the applicable conditions of the elastic thin shell moment-free theory.

The design of the stress state of the diaphragm is a relatively complex aspect of diaphragm design. There are many factors to be considered. After the geometry and size of the diaphragm are determined, they are mainly affected by the deformation of the diaphragm and the appearance of the diaphragm cavity.

For different diaphragm pumps, the diaphragm chamber can be improved according to the specific requirements of the pump. Diaphragm pumps are widely used, among which pneumatic diaphragm pumps can transport various media, such as coatings, solvents, wastewater, oil and lubricants, as well as oil transportation, chemical plating, etc..

To sum up, the service life of the diaphragm pump diaphragm is affected by many factors such as operation mode, feed stability, liquid medium temperature, diaphragm material, geometric shape and size, stress state and diaphragm cavity shape design. In order to extend the service life of the diaphragm, these factors need to be considered comprehensively and corresponding measures should be taken for optimization and maintenance.