Single suction slurry pump works, single suction slurry pump efficiency how

The basic components of a single-suction slurry pump are a high-speed rotating impeller and a fixed snail-shaped pump housing. Impellers with several (usually 4 to 12) backswept blades are fastened to the pump shaft and rotated by the motor at high speed with the pump shaft. The impeller is a component which directly works on the liquid in the pump and is a power supply device of the centrifugal pump. Single suction slurry pump works, single suction slurry pump efficiency how (a) Single suction slurry pump works When the single suction pump starts, the pump shaft driven impeller together for high-speed rotary motion, forcing pre-filling Between the blades of liquid rotation, in the centrifugal force of inertia, the liquid from the center of the impeller to the radial for radial movement. Liquid flows through the impeller in the process of gaining energy, static pressure can increase the flow rate increases. When the liquid leaves the impeller and enters the pump casing, it will decelerate due to the gradual enlargement of the flow passage in the shell. Some of the kinetic energy will be converted into static pressure energy and flow into the discharge pipe in the tangential direction finally. Therefore, the snail-shaped pump housing is not only a collection of components from the impeller out of the liquid, but also a transformable device. When the liquid thrown from the center of the impeller to the periphery at the same time, the center of the impeller to form a low pressure zone, the tank surface and the impeller center of the total potential difference under the action of the liquid was sucked into the impeller center. Depending on the continuous operation of the impeller, the liquid is continuously aspirated and discharged. The mechanical energy obtained by the liquid in the centrifugal pump ultimately appears as an increase in static pressure energy. (Two single suction slurry pump efficiency analysis and upgrade program editor (1) the single suction slurry pump efficiency decline reasons 1, due to the erosion of water flow, the inner wall of the pump flow passage and the impeller surface roughness becomes rough, the pump flow channel Of the friction coefficient increases, coupled with a large flow of water in the pump, the head loss increases. Hydraulic efficiency .2, due to the dosing of drugs or water before the pump and other reasons, so that the pump casing serious scaling or corrosion The serious scale in the pump shell can increase the wall thickness of the pump shell by about 2 mm, and the scale formation on the inner wall of the pump causes the volume of the pump body to be reduced, the amount of pumping water to be reduced, and the flow passage to be rough, and the head loss to increase. Are reduced 3, due to pump processing technology casting defects, cavitation, abrasion, corrosion and chemical etching and other causes of the pump flow channel resulting in voids or cracks, the flow of water generated vortex caused by energy loss. Hydraulic efficiency .4 , Cavitation on the surface of the impeller due to the negative pressure generated when the blade runs back to the water surface, when the pressure Pk 5, volume loss and mechanical loss due to the pump using a long time, mechanical wear loss and resistance Increase, so that the volumetric efficiency and mechanical efficiency. The above reasons, the performance of the pump worse. Operating efficiency decreased by 2 to 5%, a serious pump can reduce the efficiency of more than 10%. (2) to enhance the single-suction slurry pump efficiency Method 1, the use of polymer composite materials in the pump during the work, the pump flow of water by its flow and pump impeller surface friction and water viscosity itself, the energy consumed by the pump is mainly used to resist water flow on the surface Friction and Vortex Resistance The energy (head loss) that water consumes during flow is used to overcome the internal friction and the friction between the water and the equipment interface. If the pump, impeller surface is smooth (this surface is called the hydraulic smooth surface ) Surface resistance is small.Consumption of energy is small, in the pump flow surface and the impeller spray polymer composite materials, the surface to form a hydraulic smooth surface, super smooth surface coating surface finish is polished stainless steel 20 times, This extremely smooth surface reduces stratification of the fluid within the pump, reducing turbulence within the pump, reducing volumetric losses and hydraulic losses within the pump, reducing power consumption To achieve the purpose of reducing the loss of flow resistance so as to improve the hydraulic efficiency of the pump and at the same time improve the mechanical efficiency and the volumetric efficiency to a certain degree.The compactness of the molecular structure of the coating can isolate the media such as air and water and the base material of the pump impeller Of the contact, to minimize electrochemical corrosion and corrosion.In addition, the nature of polymer composite polymer, with chemical resistance, can improve the pump corrosion resistance, can greatly enhance the pump resistance to erosion and corrosion resistance 2, the use of new sealing technology Pump during the work part of the energy loss, including mechanical wear and tear, loss of volume and hydraulic losses, mechanical loss refers to the pump sleeve seal friction, bearing friction, impeller surface and liquid friction, etc. Using Blu-Goo Super Lubricant to reduce seal friction and bearing friction of pump sleeve for the purpose of improving pump efficiency, saving energy and reducing consumption. It is a special inert material with many applications and is mainly used to reduce intermetal contact. As a thread-sealing compound, this material forms a contact surface between male and female threads that protects the joint from friction and wear and can withstand pressures of up to 1407 kg / cm², even wear, corrosion or misalignment Machined threaded surface. The product is also an excellent gearbox additive that forms a thin film on the inner part to reduce friction, gear noise and leakage. It also significantly reduces torque stress to meet dynamic decompression requirements and can be used as a gasket surface or as a filler to supplement and seal to prevent fluid leakage. Can be used at 316 ℃ temperature. (Editor: Huang Nengwen QQ :)