Views: 2095 Author: Site Editor Publish Time: 2024-10-16 Origin: Site
Rotary joints can be classified into various types based on their different structures and functional requirements. The following are some common forms and characteristics of rotary joint structures:
1) Single circuit rotary joint
① Structural feature: There is only one fluid channel used for the input or output of the medium. Internally, it usually contains two precision bearings to ensure smooth and long-lasting operation, with a low coefficient of friction, suitable for high-speed operation. The sealing surface and sealing ring are made of special materials, which have the characteristics of wear resistance, long service life, corrosion resistance, and no leakage.
② Application scenarios: Widely used in various rotating equipment that requires medium transmission, such as injection molding machines, extruders, mixers, etc.
2) Double circuit rotary joint
① Structural features: It has two fluid channels and can independently complete the input and output of the medium. This design improves transmission efficiency and is suitable for situations where multiple media transmissions are required from multiple directions or simultaneously. Double loop rotary joints usually have the advantages of single loop rotary joints, such as smooth operation and reliable sealing.
② Application scenario: Suitable for devices that require more complex media transmission, such as complex chemical equipment, multimedia mixing equipment, etc.
1) Flat sealed rotary joint
① Sealing method: achieved through mechanical sealing, with the characteristics of simple structure and reliable sealing.
② Application scenarios: Widely used in various rotating equipment, especially in situations where high sealing performance is required.
2) Spherical sealed rotary joint
① Sealing method: Sealing is achieved through a tight fit between the spherical surface and the bottom plane, with automatic centering and compensation functions. This sealing method can be applied to equipment with low rotational accuracy and poor concentricity.
② Application scenario: Commonly used in situations where high sealing performance is required and equipment rotation accuracy is difficult to guarantee, such as cooling rollers in steelmaking continuous casting machines.
3) Wire sealed rotary joint
① Sealing method: Usually, sealing components such as O-rings are used to achieve sealing, which has the characteristics of simple structure and easy replacement and maintenance.
② Application scenario: Suitable for situations where sealing performance is not very high and sealing components need to be replaced frequently.
In addition to the common classifications mentioned above, there are also some special structures of rotary joints, such as:
1) Internal fixed rotary joint: The internal pipe remains fixed, while the external pipe rotates with the equipment. This structure is suitable for situations where the inner tube needs to maintain stability.
2) Inner tube rotary joint: The inner tube rotates with the equipment, while the outer tube remains fixed. This structure is suitable for situations where the inner tube needs to rotate with the equipment.
3) Multi channel rotary joint: With three or more channels, it can simultaneously transmit multiple media or transport one medium to different parts. This structure is complex but powerful, suitable for devices that need to handle multiple media simultaneously.
Overall, the different structural forms of rotary joints are designed to meet different application requirements. When selecting a rotary joint, it is necessary to comprehensively consider factors such as specific equipment type, medium characteristics, working pressure, and temperature range to ensure that the selected rotary joint can meet the usage requirements and has good performance and reliability.