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The cam rotor pump forms a nearly sealed space between the rotor and the pump casing to achieve the effect of conveying the medium. Therefore, its performance parameters and reliability are closely related to the size of the pump gap, which is determined by the structure, shaft, and rotor of the pump. Factors such as the force and deflection of the part. Among them, the deflection of the shaft has a great impact on the normal operation and life of the parts such as the rotor, mechanical seals and bearings, mainly because:
1. The rotor is the main overcurrent component of the medium conveyed by the cam rotor pump. Under its function, the medium is conveyed from the pump inlet to the outlet. If the rotor deforms too much in the process, once it exceeds its clearance, it will cause the rotor and the Immovable parts (such as the pump body or wear-resistant lining) are in direct contact with each other, which affects the normal operation of the cam rotor pump and shortens its working life. Here the deformation of the rotor includes the deformation of the rotor itself and the deformation of the shaft.
2. A mechanical seal is an axial end face sealing device that relies on the pre-tensioning of the static and dynamic ring end face sealing pairs by the elastic element and the pressure of the medium and the elastic element to achieve sealing. Therefore, the quality of the abutment surface between the east ring and the static ring, that is, the parallelism of the seal pair between the dynamic and static ring, is the key to determine the friction, wear and sealing performance of the mechanical seal, and also determines the working life of the mechanical seal. Therefore, the deflection of the shaft is one of the main factors affecting the parallelism of the dynamic and static rings of the mechanical seal.
3. A bearing is a widely used mechanical seal foundation that generates sliding or rolling friction between a shaft and a shaft seat. Its quality directly affects the performance of its machine. Deformation of the shaft will affect the parallelism of the bearing outer sleeve and inner sleeve, increase bearing wear and shorten bearing life.
It can be seen that rationally designing the structure or arrangement of the shaft, especially the innovative design of the overall structure of the pump , is of great significance for reducing the shaft's deflection and improving the quality of the rotor pump .
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