Centrifugal pump mechanical seal failure analysis: Centrifugal pump shutdown is mainly caused by the failure of the mechanical seal. Mainly due to the failure of the performance of the leak, the leakage of the following reasons: â‘ static and dynamic ring seal surface leakage, the main reasons are: flatness of the end surface, roughness does not meet the requirements, or scratch the surface; particulate matter between the ends, resulting in two Face can not be the same run; installation is not in place, the way is not correct. â‘¡ compensation ring seal leakage, mainly due to: gland deformation, uneven pre-tightening; installation is not correct; seal quality does not meet the standards; seal selection wrong. The actual use of results show that the sealing element failure is the most dynamic parts of the static and static ring end, centrifugal pump seal, static ring end face cracking is a common phenomenon of failure, the main reasons are: â‘ mounting surface sealing gap is too large, Rinse liquid too late to take away the heat generated by the friction; Rinse liquid leak from the gap in the sealing surface, resulting in overheating and damage. â‘¡ vaporization of liquid medium expansion, so that the two ends by the expansion of vaporization and separation, when the two sealing surface force fit, the destruction of the lubricating film resulting in the end surface overheating. â‘¢ liquid medium lubrication is poor, combined with the operating pressure overload, two sealing surface tracking rotation is not synchronized. For example, high-speed pump speed of 20445r / min, the center of the sealing surface diameter of 7cm, pump speed after the line up to 75m / s, when there is a sealing surface can not track the hysteresis rotation, instantaneous sealing surface damage caused by high temperature. â‘£ seal flushing fluid orifice or filter blockage, resulting in insufficient water, so that machine seal failure. In addition, the sealing surface of the surface of the groove, the end surface of the gap occurs when the gap sealing element failure, the main reasons: â‘ liquid medium is not clean, hard particles with a little hard, sliding surface with high speed, the end surface of the plan Injury and failure. â‘¡ poor coaxial pump drive parts, the pump is turned on each revolution after a week was shaking the friction end, moving the ring trajectory is not the same heart, resulting in end vaporization, overheating wear. â‘¢ frequent occurrence of hydraulic properties of liquid medium caused pump vibration, resulting in seal surface dislocation and failure. Liquid medium on the sealing element corrosion, stress concentration, with hard and soft materials, erosion, auxiliary seal 0-ring, V-ring, concave ring and the liquid medium is not compatible, deformation and so will cause mechanical seal surface damage failure, so Damage to the form of a comprehensive analysis to identify the root causes, to ensure long-term mechanical seal operation.
24v Truck Winch
We were founded in Y2015 at Singapore Industry Park, Suzhou, which is half hour`s car ride from Shanghai. In Y2019, we setup our HONGKONG office to support the growing of oversea business. We has established two business units to support different market strategy. Winch is our star product in off-road BU. We provide electric winch various from 2000lbs to 20000lbs, serve the industry for ATV/UTV, Jeep and truck. We also provide hydraulic winch from 10000lbs to 20000lbs, to serve the professional rescue industry. To ensure our winch always has best quality and best cost, we manufacture each key component by ourselves, like motor, gear box, rack, etc. Our manufacturing process covers Aluminum die-casting, punching, machining, CNC, and so on. Our quality department follows ISO 9 0 0 1 to control the process quality and the product quality. We provide our customer OEM/ODM service. The new design will be provided to support the new developed customer and protect the existing customer as well.
Our company utilized the on-line and off-line business model to enhance better customer service strategy. We have been striving to create value to our customer, supplier as well as our staff. Through us, we will live out the vision of glorifying God and benefiting people.
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Suzhou DAO Material Technologies Co.,Ltd , https://www.dao-compass.com