Exploration on the Dual Spool Design of Rotary Hydraulic Valve

Abstract:

There is also a monomer leak valve body on the single spool, Leakage between the guide groove affected the layout of the form guide groove. Two end faces of the single spool work in the different fluid pressure in the chamber. When the working pressure of the hydraulic system is high, the pressure differential will cause the spool bearings subject to large axial force. It will increase the resistance torque of bearing rotation. Effects of axial force also limits the increase spool diameter. Double spool valve with two spool rotation series manner. Each spool in the same pressure in the working medium. Eliminating the axial force of the valve body due to fluid pressure differential generated, also reduces the resistance to rotation of the spool moment and the impact of guide groove arrangement by oil leak, and also the commutation frequency of the rotary valve can be improved by increasing the diameter of the spool.

• Periodical: Advanced Materials Research (Volumes 989-994)
• Pages: 2845-2848
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.989-994.2845
• Online since: July 2014
• Authors: Li Jun Qiu*, Su Ying Xu
• Keywords: Axial Force, Double-Spool, Rotary Valve, Single-Spool, Torque

References

[1] Qiu Lijun, Yang Jia, Advanced Materials Research, V 322, pp.497-500. (2012).

[2] WANG Ji Wei, Zhang Wang A , Huang Yi hydraulic and pneumatic drive . Machinery Industry Press , 2012. 6. pp.8-56.

[3] Zhao Mingsheng, Mechanical engineer handbook, Second edition, Machinery Industry Press , 2001. 3. pp.443-445.

[4] YANG Nai Joe, hydraulic transmission oil situation and development [ J ] . Hydraulic and pneumatic seals , 2004, ( 5 ).

[5] Zhang Deming . Hydraulic balancing circuit application examples analysis [ J ] . Hydraulic and pneumatic seals , 2007, ( 6 ).