mechanical seales second

Mechanical seals are one of the precision and structurally complex mechanical basic components

mechanical seal：

mechanical seal’s imformation:

1、mechanical seal Divided by material: carbon graphite, silicon carbide, tungsten carbide, and other materials
2、mechanical seal Divided by temperature range: -50℃-450℃.

3、mechanical seal Divided by speed: ≤20000r/m
4、mechanical seal Non-standard customization can be provided according to customer needs

Rotary joints are sealed transmission devices, and different sealing rings are selected according to the requirements of the usage environment and transmission medium. They play a sealing role in the gaps lubricated with grease, preventing debris or dust from entering the interior of the joint, while reducing friction, heat generation, and wear; But the sealing ring is a vulnerable component of the rotary joint, which not only has to withstand the pressure of the internal medium, but also the friction between the external and the shell. Below, we will introduce the commonly used sealing rings for rotary joints.
There is a fluid dynamic pressure film controlled by the cutting edge between the oil seal and the shaft inside the rotary joint, which allows the liquid film to come into contact with air and form a meniscus under the surface tension of the liquid, achieving the sealing of the rotary joint shaft and preventing leakage; The meniscus is a necessary condition for oil seal sealing, and the thickness of the oil film directly affects the sealing ability of the oil seal; Excessive oil film thickness in rotary joints can lead to leakage, while insufficient oil film thickness may cause dry friction, resulting in oil seal wear. Critical ink is the most ideal..
Rotating joint sealing ring
The rotary joint carbonized silica ink ring is a ring-shaped sealing material made of silicon carbide material; The alumina sealing ring used in high-temperature rotary joints, also known as ceramic sealing ring, is a medium sealing ring made of alumina material and has the characteristics of high temperature resistance and high strength; A relatively heavy hard alloy sealing ring made of hard alloy material. Of course, sealing rings made of different materials play different roles in rotary joints. Only by using them correctly can they achieve maximum effectiveness. We remind everyone that once slight leaks are found in rotary joints, vulnerable parts such as sealing rings should be promptly inspected and replaced. The sealing performance of composite material sealing is relatively better, and it is used in situations where hydraulic cylinders have intermediate positioning. The use of composite material sealed rotary joints can make them more compact and compact due to the smaller size of the seal itself. The cost of composite material sealing itself is much cheaper than mechanical sealing. The composite material rotary seal consists of two parts, consisting of an outer ring and an O-ring combination. The O-ring serves as a support for the outer ring, making it easier to install the entire rotating seal.