YF Mechanical Seal
Usage parameters
Maximum sealing pressure: 1.6 MPa (16 bar)
Sealed chamber pressure: s0.1-0.25Mpa (1-2.5 bar)
Sealed chamber temperature: -40°C to 250°C
Linear velocity: 5m/s. Sealing medium: Primarily used for sealing gases, liquids with high solid content, hazardous chemical media, and high-temperature media. Different sealing friction pairs are selected based on different usage parameters to meet the operational requirements.
Structural features:
YF mechanical seal is of externally mounted, double-end face, multi-spring balance structure, driven by transmission sleeve and supported by self-aligning bearing. Due to the use of multiple springs, the sealing surface has uniform contact, good sealing performance, and large seal shaft diameter is allowed. Type YF mechanical seal is used to seal the stirring shaft of the reactor.
YF mechanical seal is designed with three-dimensional technology, and key parts are processed with FANUC numerical control, with reliable quality. You are welcome to choose and customize non-standard products.
Specifications of YF mechanical seal
Model introduction of YF mechanical seal
YF40: externally mounted, double-end face, multi-spring balance structure mechanical seal, outer diameter of sealing shaft is 40mm.
Specifications of YF mechanical seal: YF40, YF50, YF60, YF70, YF80, YF90, YF100.
Part name: 9. Bottom cover, 11. Shell, 12. Middle cover, 47. Drive screw, 33. Bolt, 52. Bushing, 63. Locating block.
1. It adopts an external, double-end, multi-spring balanced structure.
2. The bushing is installed on the shaft sleeve, and the power is transmitted through the bushing, relying on the transmission screw to convey the power.
3. It is internally supported by ball bearings, allowing for high-speed operation.
4. Primarily used for sealing rotating shafts, to seal gases, liquids (water, oil, etc.).
Connection dimensions of YF40 mechanical seal
Requirements of rotary joints for the flowing medium
The fluid media of rotary joints are divided into two major categories: liquids and gases. The circulating liquids mainly include water, oil, hydraulic oil, heat transfer oil, cutting fluid, grease, edible oil, ethylene glycol, kerosene, etc. The circulating gases mainly include steam, air, vacuum, compressed air, as well as nitrogen, argon, carbon dioxide gas, acetylene gas, etc.
For rotary joints used in circulating liquids, practice has proven that they often leak shortly after initial use, primarily due to the medium flowing through them
The issue may arise due to the presence of hard particles or other contaminants in the liquid medium (such as water, oil, or hot oil). Therefore, it is extremely important to clean the pipeline, drum, and the interior of the rotary joint before introducing the medium into the pipeline. Impurities in the flowing medium can cause the rotary joint seal to fail. The service life of the seal is also primarily determined by the filtration accuracy of the flowing medium. As the filtration accuracy of the flowing medium increases, the service life of the rotary joint will be significantly extended. It is recommended to install a filtration device in the pipeline, with a recommended filtration accuracy of not less than 50 microns. For rotary joints that circulate steam, there are no specific requirements for the steam. It is only required that the pipeline, drum (or drying cylinder), and the interior of the rotary joint be cleaned before installing the rotary joint. After installation, steam is used as purge steam to blow out hard particles or other contaminants from the installation pipeline through the purge valve.
For rotary joints that circulate gas (mainly compressed air), it is recommended to install an oil mist device in the pneumatic pipeline. This will ensure that the compressed air contains atomized lubricating oil, forming oil-containing air. This will lubricate the sealing surface of the rotary joint and extend its service life.
