创建于06.23
How to Determine the Wear Degree of Slurry Pump Packing？
During the operation of a slurry pump, the packing serves as a key component to ensure the pump's sealing performance. The degree of its wear directly affects the normal operation and work efficiency of the equipment. Timely and accurate judgment of the packing's wear degree is an important prerequisite for preventing slurry leakage from the packing and extending the service life of the slurry pump. We can assess the wear status of the packing from multiple dimensions to take corresponding measures in a timely manner.
I. Intuitive Observation of Packing Appearance and Morphology
The most direct way to determine the wear degree of the packing is to observe its appearance. Open the stuffing box of the slurry pump and carefully check the surface of the packing. If obvious grooves or gullies appear on the packing surface, these marks are the result of long-term erosion by solid particles, indicating that the packing has suffered severe wear. Just as a riverbed forms deep grooves due to long-term water impact, the grooves on the packing surface mean its thickness is continuously reduced, and the sealing performance decreases accordingly.
In addition, changes in the packing's material properties can also reflect the wear condition. For rubber-based packing, it should normally be elastic and have a smooth surface. If the surface becomes rough, cracks appear, or it starts to harden, become brittle, and lose its original softness and elasticity, this is an embodiment of the combined effect of aging and wear. For fiber-based packing, if the surface fibers are loose, broken, or even partially detached, it also indicates that the packing wear is relatively severe, making it difficult to maintain good sealing performance.
II. Monitoring Slurry Leakage During Operation
The amount of slurry leakage is an important indicator for judging the wear degree of the packing. During the normal operation of the slurry pump, if the amount of slurry leakage at the stuffing box gradually increases and exceeds the normal range, this is a significant signal of intensified packing wear. Under normal conditions, a small amount of liquid will seep from the packing seal to play a role in lubrication and cooling. However, when the slurry leakage significantly increases and even forms a continuous flow, it indicates that the gap between the packing and the shaft has increased due to wear, failing to effectively block the slurry from leaking.
The amount of slurry leakage within a certain period can be recorded and compared with the data during the initial operation of the equipment or the standard values. If the slurry leakage continues to rise and reaches or exceeds the threshold, attention needs to be paid to the packing wear problem, and the packing should be inspected and handled in a timely manner. For example, if there was only a small amount of dripping per hour originally, but after a period of time, obvious slurry leakage occurs every minute, this indicates that the packing wear degree is relatively severe, and urgent replacement or adjustment is required.
III. Paying Attention to Abnormal Phenomena During Equipment Operation
Packing wear can also trigger a series of abnormal phenomena during the operation of the slurry pump. The first is changes in noise and vibration. When the packing wears unevenly or the wear degree is significant, it will disrupt the balance between the shaft and the packing, causing abnormal noise and vibration during the pump's operation. A pump that originally operated smoothly suddenly emits a harsh friction sound, or the body vibration intensifies, which may be caused by poor contact between the packing and the shaft due to wear.
Secondly, pay attention to the temperature change in the packing area. During normal operation, the friction between the packing and the shaft will generate a certain amount of heat, but the temperature is within a reasonable range. If the packing wear is severe, the friction will intensify, leading to a sharp increase in the temperature of the packing area. A temperature measuring instrument can be used to regularly measure the temperature near the stuffing box. If the temperature continues to rise and even exceeds the normal operating temperature range by a large margin, this not only means severe packing wear but also may trigger the risk of damage to other components, requiring immediate shutdown for inspection.
IV. Judging in Combination with Changes in Equipment Performance
Packing wear will also affect the overall performance of the slurry pump. The flow rate and head of the slurry pump will fluctuate. When the packing wear leads to a decline in sealing performance, internal leakage will occur in the pump, causing the actual output flow rate and head to be lower than the normal level. A pump that could originally transport slurry stably, after operating for a period of time, significantly reduces its transportation efficiency, and the slurry cannot be smoothly transported to the designated position, or the transportation speed slows down, which is likely that the packing wear has affected the pump's working performance.
At the same time, the energy consumption of the slurry pump will also change. As packing wear increases the operating resistance, the pump needs to consume more energy to maintain operation, manifested as an increase in the equipment's current and power. If the energy consumption of the slurry pump increases for no apparent reason during operation, after excluding other fault factors, the impact of packing wear on energy consumption needs to be considered.
Judging the wear degree of slurry pump packing requires the comprehensive use of multiple methods, from appearance observation and leakage monitoring to capturing abnormal operation phenomena and analyzing equipment performance. Through these comprehensive and detailed judgment methods, packing wear problems can be found in a timely manner, providing a basis for subsequent maintenance and replacement work, thereby ensuring the stable and efficient operation of the slurry pump.
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The parts manufactured by us are not associated with, endorsed by, or sponsored or manufactured by the owners of the related trade marks given into this website or other documents.
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Hedunpump Is not affiliated nor a distributor for any pumps company.
The parts manufactured by us are not associated with, endorsed by, or sponsored or manufactured by the owners of the related trade marks given into this website or other documents.
Any use of OEM names, trademarks or other information is for reference only.
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