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The 3PN pump is a mud pump. It used to be a single-end mechanical seal cooled by sputum. However, because the sputum contains a lot of solid particles, when the pump runs at high speed, solid particles will flow into the sealing surface and cause damage. When the pump stops, the particles in the sputum will deposit and adhere to the surrounding of the sealing surface. When the pump is started again, the heat generated by the friction of the sealing surface will not easily dissipate, which will easily cause the mechanical seal to burn. The mechanical seal life of each circulating pump is only average. About two months.
The original single-sided single-spring mechanical seal was changed into two sets of single-sided multi-spring mechanical seals. The specific method is to remove the original shaft sleeve shoulders, so that it can install two sets of single-sided mechanical seals and make a convex part in the middle part. The table is used for axial positioning of the two sealing rings. The keyway is machined on the sleeve and the pump shaft, the original back cap fastening connection is changed to the key connection, and a fastening back cap on the original pump shaft is eliminated. A sealing gland is added on the side of the sputum, and the sealing gland is fixed on the pump bracket to separate the sputum and the sealing chamber, and the cooling medium is changed from sputum to water to reduce seal wear.
After the effect is improved, the seal runs under the cooling of circulating water, the wear is reduced, the use time is extended, two sets of single-end mechanical seals are 1,100 yuan, the average service life is calculated by 6 months, and the original single-end seal is 540 yuan per set.
October 17, 2022
October 17, 2022
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October 17, 2022
October 17, 2022
October 25, 2022
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.