The stainless steel multistage pump is a type of centrifugal pump that also relies on the rotation of the impeller to obtain centrifugal force and thus the material. When the gas density reaches the working range of the mechanical vacuum pump, it is extracted, thereby gradually obtaining a high vacuum.
A suitable amount of water is used as a working fluid in the stainless steel multistage pump body. When the impeller rotates clockwise, the water is thrown around by the impeller. Due to the centrifugal force, the water forms a closed ring of approximately equal thickness depending on the shape of the pump chamber. The inner surface of the lower portion of the water ring is just tangent to the impeller hub, and the upper inner surface of the water ring is just in contact with the tip of the blade (actually the blade has a certain depth of insertion within the water ring). At this time, a crescent-shaped space is formed between the impeller hub and the water ring, and this space is divided by the impeller into a plurality of small cavities equal to the number of blades.
1. High-efficiency and energy-saving of stainless steel multi-stage pump: Calculate the fluid dynamics by CFD, analyze and calculate the relationship between pressure distribution and velocity distribution in the pump, optimize the flow channel design of the pump, ensure that the pump has efficient hydraulic line and improve the efficiency of the pump.
2, stainless steel multi-stage pump installation, maintenance and convenient: vertical pipeline structure, the pump's import and export can be installed in any position and any direction of the pipeline like a valve, installation and maintenance is very convenient.
3. Smooth operation, safe and reliable: the motor shaft and the pump shaft are coaxial and directly connected, with high concentricity, stable operation, safe and reliable.
4. Stainless steel multi-stage pump bushing: The sealing position of the shaft is relatively easy to be rusted. Once the direct-coupled pump shaft is rusted, it is easy to cause mechanical seal failure. The STG pump is equipped with stainless steel bushings to prevent rust, improve shaft life and reduce operating and maintenance costs.
5. Bearing: Among the motors equipped with the pump, the shaft end bearing of 280 or less (including the fan end bearing below Y180) adopts closed type bearing. When it is used normally, the maintenance of the motor bearing is avoided.
6. Machine seal: The mechanical seal base is generally made of rubber bellows structure. The seal on the shaft of the traditional mechanical seal is changed from the line seal of the O-ring to the two-face seal of the rubber part, which improves the sealing effect in the clear water medium.
If the lower part of the impeller is 0°, the volume of the small cavity becomes smaller from 180° before the rotation, and it communicates with the suction port on the end face. At this time, the gas is sucked in, and when the inhalation is finished, the cavity is small. It is isolated from the suction port; when the impeller continues to rotate, the small cavity becomes larger and smaller, so that the gas is compressed; when the small cavity communicates with the exhaust port, the gas is discharged outside the pump.
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