According to different application scenarios and needs, pump valve seals can be divided into many types, mainly including: mechanical seal, packing seal, gas seal and liquid seal. Each type of seal has its own unique characteristics and application range.
1, mechanical seal: mechanical seal is a common pump valve seal, it has high precision, high strength, high wear resistance and other advantages, suitable for high-speed rotation and high pressure sealing occasions. The mechanical seal adopts the structure of dynamic and static ring friction pair, and the end faces of dynamic and static ring are perpendicular to each other and have relative sliding friction, which can achieve zero leakage effect. Mechanical seals have a long service life and low maintenance costs.
2, packing seal: packing seal is a simple pump valve seal, it has the advantages of simple structure, easy maintenance, suitable for atmospheric pressure or low pressure sealing occasions. The packing seal is made of soft packing materials, such as asbestos fiber, graphite, etc., which are compressed and tightly attached to the internal parts of the pump or valve to achieve the sealing effect. The price of packing seal is cheaper, and it is suitable for some low-requirement application scenarios.
3, gas seal liquid seal: gas seal liquid seal is a special pump valve seal, it can prevent the leakage of gas or liquid media. The liquid seal adopts a special structural design, which can keep the pressure of the gas or liquid medium within a certain range, so as to achieve the sealing effect. Gas seal liquid seal is suitable for some special application scenarios such as flammable and explosive, toxic and harmful occasions.
Post time: Nov-21-2023
