The mechanical seal is an indispensable key component of pump products and is crucial to the normal operation of the pump. Once the mechanical seal fails, the motor may come into contact with liquid, which leads to the risk of motor damage.The core principle of mechanical seals is to transform the leaky axial seal into a more reliable end seal form.
Working Principle The core principle of mechanical seals is to transform the leaky axial seal into a more reliable end seal form. When the motor shaft is in the working state, it will drive a series of components such as the spring seat, the spring pressure plate, and the moving ring to rotate synchronously. Due to the elastic action of the spring, the moving ring will be tightly attached to the static ring. In the rotation process of the motor shaft, the moving ring rotates with the shaft, while the static ring remains stationary and fixes the frame. The close contact between the moving ring and the static ring forms a ring sealing surface, which effectively prevents the leakage of the medium.
The mechanical seal is an indispensable key component of pump products and is crucial to the normal operation of the pump. Once the mechanical seal fails, the motor may come into contact with liquid, which leads to the risk of motor damage.
Mechanical seals involve four main sealing points: 1、Dynamic seal between dynamic ring and static ring. 2、The relative static seal between the moving ring and the shaft or sleeve. 3、Static seal between static ring and static ring seat. 4、Static seal between static ring seat (gland) and equipment.
For moving and static rings, they need to have excellent wear resistance to reduce friction, and they should also have good thermal conductivity to ensure that the heat generated by friction can be dissipated in time. In addition, the void ratio between them should be as small as possible and compact to prevent the medium from penetrating under pressure. Dynamic ring and static ring have different hardness requirements. In general, the hardness of the moving ring is higher than that of the static ring. The material of the moving ring can be selected cast iron, hard alloy, high alloy steel, etc., in the case of corrosive media, stainless steel, ceramics and other materials can also be used; The static ring can be cast iron, phosphor bronze, babbitt alloy and so on.
Product Characteristics 1、Mechanical seals can work under high temperature, high speed, high pressure and corrosive media, and have good sealing performance. 2、The mechanical seal is compact and easy to install. 3、The mechanical seal has a long service life and can maintain its sealing performance in harsh environments. 4、Mechanical seal is suitable for a variety of static seal and rotary seal occasions, widely used in pumps, compressors, steam turbines and other equipment.
