Views: 6 Author: Site Editor Publish Time: 2019-09-11 Origin: Site
Rotary joint classification: pneumatic rotary joint, hydraulic rotary joint, high speed rotary joint, high pressure rotary joint, high temperature rotary joint.
Now let's talk about how we choose the types of rotary joints above. Pneumatic rotary joints are mainly used to transport gas medium such as gas vacuum. The maximum pressure of conventional products is 10Bar, (standard industrial pressure is 5~8Bar). The standard product speed is 600RPM. Within, if our medium is gas or vacuum, then we choose the type of pneumatic rotary joint, which is widely used in automation equipment.
Hydraulic rotary joints are mainly used to transport fluid medium such as hydraulic cutting fluid such as hydraulic cutting fluid. The basic pressure of conventional products is 350Bar (normal hydraulic maximum pressure is 250Bar). The maximum speed of standard products (200RPM). If we need to circulate multiple media at the same time, then we You can choose hydraulic rotary joints, its products are mainly used in high pressure environment, with good sealing performance, widely used in construction machinery, such as excavator fire trucks, drilling rigs, tree transplanting machines, etc.
The high-speed rotary joint is mainly used to transfer cutting fluid and hydraulic oil. The standard product has a pressure resistance of 250 Bar and a standard speed of 3000 RPM. The high-speed rotary joint has high requirements on the medium, and the medium can not contain particulate impurities, otherwise it will directly cause the high-speed rotary joint to be stuck and damaged. The high-precision suspension bearing is used internally to support the non-destructive rotation of the entire rotor, and the long service life and high-speed rotary joint Widely used in CNC machine tool manufacturing.
The high-pressure rotary joint is mainly used for conveying hydraulic oil. The standard product has a maximum pressure of 1000 Bar and a maximum speed of 50RPM. It is mainly designed for maritime and petroleum exploration. The internal use of bearingless structure effectively improves the service life of the product. The groove structure design effectively reduces the damage caused by pressure on the product. If our medium pressure is relatively high, then we should choose high-pressure rotary joints instead of ordinary rotary joints to avoid safety accidents caused by high pressure. The overall design of steel structure is effective against pressure.
High-temperature rotary joints are mainly used to transport steam and some rare high-temperature gases. The temperature resistance of general high-temperature products is 380 °C. The temperature requirement for special requirements is 700 °C. The seals of high-temperature rotary joint products are all from abroad, and domestic seals cannot meet the needs of their products. At the same time, the demand for high-temperature rotary joints is small, the production process is complicated, and the unit price is high.
From the above, everyone should know about the rotary joint. Although the rotary joint is a very small connecting part, it plays a very large role in the equipment. Once there is a problem, the whole equipment will have a problem. Therefore, when you choose a rotary joint product, you should not blindly look at the price, but you should talk to the salesperson of the rotary joint manufacturer to see if it is professional. We should choose the products of professional manufacturers, not the products of low-priced manufacturers.
