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Water Pump Seals Do Not Need Daily Maintenance
Aug 31, 2017

Pump seals are the type of shaft seals that are common to rotating machines. Pump seals are mainly used in gas, liquid and other types of media seals, such as pumps, reactors and so on, Pump Seal but also for gas seals, such as compressor media shaft seal.

Because of its low leakage and no need for daily maintenance, the seal of the gland is widely replaced by the seal of the soft packing.

Water pump seals generally have two perpendicular to the axis axis of the seal plane, it can also be referred to as "radial end-face seal." One of the sealing surface components is mounted on the pump cover, Pump Seal end cover or pump body to remain stationary, and the other is fixed on the shaft and rotates with it. Still called the Static ring assembly (in the stationary pump seal is also known as the Floating Ring assembly), Pump Seal rotating the called Dynamic Ring (Rotary ring) components. In order to keep the leakage in a very small range, the normal condition of the conventional pump Seal of the rotary ring and the rest of the surface of the grinding plane tolerance is 0.0006.

In order to keep two surfaces of heat and wear in the permissible range, there must be a layer of fluid lubrication between the sealing surfaces. For single end face seals, Pump Seal usually sealed medium as lubricant, but for toxic, harmful, flammable, explosive, strong corrosive medium selection of the double face or series of pumps sealed, and the medium can be soluble in the sealing fluid as lubrication and coolant.

In order to compensate for the wear and manufacture error, a sealing surface can be moved along the axial direction under the double action of the elastic element and the medium pressure. At the same time, Pump Seal in order to adapt to the shaking caused by the angular deviation of the rotating part, a sealing end surface can be slightly floated in the radial direction. Usually consists of a sealing surface with both functions.

For the rotary shaft seal, the pump seal is the most common type of seal. Water pump seals are usually sealed with liquids, such as centrifugal pumps, Pump Seal and are also used in gas seals such as compressors and mixers. In this textbook, we mainly introduce the pump pump sealing relative to the liquid medium.

Because of its low leakage and no need for daily maintenance, the seal of the pump has been widely replaced by the packing seal.

Water pump seals generally have two of the sealing surface perpendicular to the rotary shaft, so it can also be called "Radial End Face Seal". One of the sealing surfaces is mounted on a fixed pump bracket or pump body and is called a "static ring": the other is mounted on the rotating shaft and rotates with the shaft and is called a "moving ring". In order for the leakage of the media to remain within the allowable range, Pump Seal the contact surfaces of the two relative motions must be kept at a very small gap, usually less than 0.001mm, and the auxiliary system shall also be used to cool and lubricate the end face of the pump seal.