Senon is from a Spanish hydraulic equipment company and has been responsible for the procurement of hydraulic valves for 3 years. At the end of last year, their customer customized two sets of hydraulic power units for ocean ships, and needed to customize the hydraulic cartridge counterbalance valves. Senon chose a hydraulic counterbalance valve manufacturer who has cooperated for 3 years to make samples. During the equipment commissioning, it was found that the pressure supply was unstable and the hydraulic system was tested separately, but there was no abnormality. The boss questioned the team's performance. Senon felt that there was a hidden danger in the original design of the hydraulic cartridge counterbalance valve, but the engineer thought that the function of the purchased hydraulic counterbalance valve was not up to the standard, so both parties tried to shift the blame. Senon contacted other manufacturers of hydraulic counterbalance valves. 2 weeks passed, it was fruitless. Senon became very anxious.
When browsing on Google, Senon found AAK webpage and left a message: Is the instability of hydraulic cartridge counterbalance valve caused by a hidden danger in design or an unqualified precision? I replied: both possible, it needs to analyze specific problems. He sent me the equipment debugging video, the production drawings of the hydraulic cartridge counterbalance valve, and also told me the name of the original hydraulic counterbalance valve manufacturer. In my opinion, it is unlikely that the original manufacturer can not control the manufacturing quality of this hydraulic cartridge counterbalance valve. I told him that probably the design function was abnormal, and the manufacturing defects of the original manufacturer were not ruled out. Senon seemed confused and asked me for advice. I told him that AAK was 90% confident to solve the instability of the hydraulic cartridge counterbalance valve and improve the equipment pressure supply.
After 40 days, AAK sent 10 hydraulic cartridge counterbalance valve samples. 3 weeks later, Senon emailed that the unstable pressure supply that had troubled him for 6 months, had been solved by AAK at one time. He could relax finally. The two sets of the hydraulic power units had been delivered to the customer. He was waiting for the customer's regular order. Their engineer also admired the design mind of AAK.
The Hydraulic cartridge counterbalance valve designed by AAK, was successful in below 3 points (1 wear-resistant, 2 optimized):
1. A damper is arranged at the oil port at the rear end of the screw plug, the valve spool is provided with an inner cavity that is axially penetrated, and the inner cavity is provided with a boss that is axially limited. This can effectively reduce the flow resistance and improve the wear resistance of the valve spool.
2. The inner chamber of the valve spool is also equipped with a spring, the other end of the spring is against the end cover, the piston is sliding in the second chamber, and the stepped end of the piston rod passes through the chamber wall between the first chamber and the second chamber, to ensure the stability of the hydraulic cartridge counterbalance valve.
3. The back end of the piston is equipped with a one-way throttling device, and the diameter of the outer circumference of the valve body from the end cap end to the screw plug end is gradually reduced in a ladder shape, further optimizing the stability of the hydraulic cartridge counterbalance valve.
AAK hydraulic cartridge counterbalance valve, high stability, no worry, you can also have a small try!
AAK HYDRAULIC CARTRIDGE VALVES (395) 2022-10-28
