What are the
spare parts of progressive cavity pump?
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The Stator of a Progressive Cavity Pump
The stator is mostly made of rubber. Because it needs to form a closed meshing cavity with the rotor, it is an interference fit with the rotor. When the rotor (main shaft) rotates and causes continuous friction, it will wear naturally.
The Rotor of a Progressive Cavity Pump
The Progressive cavity pump rotor (also known as the main shaft) is mostly made of stainless steel, and can be selectively plated with chrome;
Due to its meshing relationship with the characteristic geometry of the stator, in addition to natural wear, it is also whether the conveyed medium contains solid particles and corrosive.
The Coupling Rod of a Progressive Cavity Pump
The coupling rod connects the rotor and the drive shaft. When the motor is running, the drive shaft drives the coupling rod, and the coupling rod then drives the rotor to play a transmission role. Except for the drive shaft, these mechanical components are located in the suction chamber of the pump.
The Drive Shaft of a Progressive Cavity Pump
The drive shaft is generally connected to the drive end (reducer or various drive motors), and its wear is mostly caused by natural wear or changes in media working conditions.
The Universal Joint Assembly a Progressive Cavity Pump
The universal joint assembly is located at both ends of the coupling rod. It successfully connects the rotor and the drive shaft to the coupling rod more stably and firmly; Since the universal joint assembly consists of a variety of small spare parts, we need to check its seal regularly And lubrication.
Mechanical seals are generally used to transport media with corrosion resistance, high moisture content or no particles or even a small amount of particles.
Advantages: Long life, no leakage, good vibration resistance, and a wide range of applications;
Disadvantages: Complex structure, high processing requirements, troublesome installation and replacement.
The packing seal is mostly polytetrafluoroethylene packing, which is generally used for conveyor belt particles or media with low moisture content;
Advantages: The packing seal is wear-resistant, low cost, easy to install and replace;
Disadvantages: The medium will leak out of the stuffing box as drops and needs to be cleaned regularly.
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