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Analysis of Leakage Causes of Rotating Joints of Qun Sheng Company

Author: source: date: 2018-07-13 16:20:43


Analysis of Leakage Causes of Rotating Joints of Qun Sheng Company



The first step of the rotary joint observation appearance: the use of a month to appear the appearance of paint peeling off serious. This paint is baked at a temperature of 200 degrees. This is usually caused by two reasons. The use temperature is higher than 200 degrees, and the medium used has acid-base corrosion and solubility. The bearing entered due to leaking water, causing the rust to become stagnant and unusable.

rotary joint 2



Rotating the joint in the second step: Open the back cover and remove the shaft retainer and the hole retaining spring. At this point, it can be found that the trace of the back cover is very new, which proves that the rotary joint is used for a short time. When the axle card is removed, the spring bounces normally, which proves that the spring compensation has not failed. When the moving ring is removed further, it cannot be removed. The hydraulic ring is pressed against the center shaft by the external force, and the moving shaft is removed by retracting the center shaft. At this time, during the process of retracting the center shaft, a shell burst occurs, and the rust between the bearing and the casing is the main cause of the shell bursting. At this time, the moving ring and the stationary ring were observed, and it was found that the rubber portions of the moving ring and the stationary ring were all hardened, and the sealing effect was lost.

rotary joint 3



rotary joint 1

The hardened rubber has obvious cracks. The water leaks from the middle of the rubber sleeve and the middle shaft. A large number of leak marks appear on the surface of the middle shaft. The outer diameter of the static ring rubber is cracked at the same time, and the outer diameter of the static ring is also lost. Sealing effect. It can be seen that the sealing time of the rubber butyl sealing is short, that is, the sealing failure occurs. There are two reasons for the rubber to become hard: 1 high temperature 2 medium is corrosive.

In order to solve the problem, the customer needs to cooperate with two things: 1 to inform the actual use temperature. 2 Tell the actual use of the medium and use the PH test paper I provided to check the pH value of the water.

rotary joint 5


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