Views: 219 Author: Site Editor Publish Time: 2021-01-18 Origin: Site
The electromagnetic directional valve is lost during normal use, and the loss to a certain extent will cause the electromagnetic directional valve to malfunction and fail to work. The parts and positions of electromagnetic reversing valve that are prone to failure are as follows.
The function of the push rod in the solenoid is to push the KHB3K 3-Way hydraulic ball valve core to move when the armature moves. The push rod and the spool are not integrated. Therefore, in constant contact, wear is bound to occur. After long-term high-frequency commutation, it may be worn and shortened significantly, which will cause the spool to fail to reverse and affect the operation of the electromagnetic directional high pressure hydraulic ball valve. At this time, we only need to replace the push rod to solve the fault, but we should pay attention to the new push rod specifications and dimensions should be consistent with the original accessories.
The burning of the electromagnet is also one of the common faults of the electromagnetic directional valve. One of the reasons for this is quality problems, such as poor processing of the iron core, and the wire diameter standard of the wire is too low to easily overheat. Faults caused by quality reasons can usually be noticed within a few hours after the solenoid valve is energized. For coil failures after working for a period of time, most of them are caused by the use environment.
The wear of the outer diameter of the KHB3K 3-way hydraulic ball valve core is the same as the wear of the hole in the valve body. Especially when the oil contains too much or too large impurities, it will aggravate the wear of the solenoid valve core. This kind of wear cannot be completely avoided, but it is possible to extend the service life of the solenoid directional valve and maintain good working conditions by regularly checking the cleanliness of the hydraulic oil and handling excessive contamination of the hydraulic oil in time. The spool of the three-wing electromagnetic reversing valve is made of unique material, with a hardness above HRC60. Compared with ordinary solenoid directional valves, the valve core has better wear resistance, so the life span is greatly enhanced.
The fatigue or breakage of the return spring has a certain relationship with the material selection of the spring. The electromagnetic reversing valve uses imported piano steel wire spring. The surface is dyed black and has good elasticity. The strengthening of the surface treatment process can effectively prevent the spring from being corroded and has a very high service life. When we encounter such failures, we must replace the springs on both sides at the same time, and pay attention to the length to match the design value of the electromagnetic directional valve.
Frequent back-and-forth movement between the valve core and the hole in the valve body will cause the hole in the valve body to wear. Although the spool of the solenoid directional valve is designed with an oil groove, the contact surface can be filled with oil to the greatest extent and friction can be reduced. However, according to the working nature of the electromagnetic reversing valve, the abrasion of the inner hole of the electromagnetic reversing valve cannot be completely avoided. The solenoid valve body is made of ductile iron, which is different from ordinary solenoid directional valves.
The three-wing reversing valve adopts a unique raw material ratio to strengthen the hardness of the valve body, which delays the wear and deformation of the hole in the valve body to a certain extent. The wear of the holes in the valve body can be repaired or replaced as needed. When replacing, you need to pay attention to whether the new valve body can match the related components of the original electromagnetic directional valve, such as solenoid tube, sealing ring, etc.
The above are the five most common problems of solenoid directional valves. There may also be other uncommon problems, such as voltage, unstable current, and large shock fluctuations, which may cause burnout. In addiction to solenoid directional valves, you can get different valve components in JAZZY, such hydraulic ball valve, KHP Hydraulic Ball Valve, etc. Welcome to contact JAZZY.
