A quick share, in one minute, let you understand the operating principle of the Zhongkai pump.
Release time:
2022-11-04
Source:
The middle-opening pump, also known as a single-stage double-suction centrifugal pump, is characterized by its large flow rate for transporting media. What is the operating principle of the middle-opening pump? Let's take a brief look together:
The middle opening pump, also known as a single-stage double-suction centrifugal pump, is characterized by its large flow of the conveyed medium. What is the operating principle of the middle opening pump? Let's take a brief look together:
The impeller of the middle opening pump is installed inside the pump casing and is secured to the pump shaft, driven directly by a motor. There is a suction pipe connected to the center of the pump, and liquid enters the pump through the bottom valve and suction pipe. The discharge port on the pump casing connects to the discharge pipe. When the pump's rotational speed is constant, its head and flow rate are related to the diameter of the impeller.
What methods are there to improve the efficiency of the middle opening pump? Let's take a brief look together:
1. Use high polymer composite materials. During the operation of the pump, the water flowing inside is affected by the friction between the waterway and the outer surface of the impeller, as well as by the viscosity of the water itself. The energy consumed by the pump is mainly used to resist friction in water flow and vortex resistance at the water surface. The energy consumed during water flow is used to overcome internal friction and resistance at the interface between water and equipment. If the surfaces of the pump and impeller are smooth (this surface is called hydraulically smooth), external resistance is low, and energy consumption is reduced. Spraying high polymer composite materials on the flow surfaces of the pump and impeller forms a hydraulically smooth surface, with a surface finish that is 20 times smoother than polished stainless steel. This extremely smooth surface reduces stratification of fluids in the middle opening pump, thereby reducing turbulence, volumetric loss, hydraulic loss, and power consumption in the pump, achieving a reduction in flow resistance loss and improving its hydraulic efficiency. At the same time, mechanical efficiency and volumetric efficiency can also be improved to some extent. The density of the coating's molecular structure can isolate air, water, and other media from contact with the impeller base material, minimizing electrochemical corrosion and wear. Additionally, high polymer composite materials have properties that resist chemical corrosion, significantly enhancing their resistance to erosion and corrosion.
2. Adopt new sealing technologies. During operation, some energy loss occurs, including mechanical wear, volumetric loss, and hydraulic loss. Mechanical losses refer to friction from sleeve seals, bearing friction, and friction between the outer surface of the impeller and liquid. Super lubricants are used to reduce sealing friction in pump sleeves and bearing friction, thereby improving efficiency and saving energy. It is a special inert material with multiple uses, primarily used to reduce contact between metals. This material acts as a thread sealant, forming a contact surface between external threads and internal threads to protect joints from friction and wear. It can withstand pressures of up to 1407 kg/cm² even on worn, corroded, or improperly machined threaded surfaces. This product is also an excellent additive for gearboxes that can form a thin film on internal parts to reduce friction, gear noise, and leakage while significantly lowering torque stress to meet dynamic decompression needs. It can be used on gasket surfaces or as filler material to prevent fluid leakage through sealing at temperatures up to 316°C.
Centrifugal pump
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