Desalting pump is a special external supply pump for conveying brine, its main function is to send the chemically treated desalting water to the deaerator to ensure that the water level of the deaerator tank is within the allowable range, and the deaerator is used for the boiler, and it is also the preferred corrosion resistant pump for conveying salt, acid, alkali and other corrosive medium solutions. Demineralized water is the removal of ca, Mg ions of water, generally used for machine pump sealing cooling water, to avoid scaling, can also be used as electric desalination water, demineralized water is generally used in the production of more extensive, large-scale industry is still to boiler recharge water. In thermal power plants, demineralized water pump is used to supply demineralized water to steam turbine to meet the boiler water.
Centrifugal pump selection is mostly used, centrifugal pump with high speed, small size, light weight, high efficiency, large flow, simple structure, no pulse infusion, stable performance, easy operation and easy maintenance. Centrifugal pump compact structure, wide flow range and wide head range, suitable for mildly corrosive liquids, a variety of control options uniform flow, smooth operation, small vibration, do not need special shock absorption foundation, equipment installation, maintenance and repair costs are low. Available models can be single-stage centrifugal pump, multistage centrifugal pump, corrosion resistant centrifugal pump, corrosion resistant material can be selected such as 304 material, or plastic, specific or according to the flow, head, pressure, temperature, cavitation flow, medium characteristics suction and other process parameters requirements to choose, the following models are recommended.
IS, IR type desalt pump is a horizontal single stage single suction (axial suction) water centrifugal pump, according to the international standard IS02858 specified in the performance and size design, its technical standards are close to international standards, the full series of hydraulic performance layout is reasonable, wide range of user choice, easy maintenance; The efficiency and suction reach the international average advanced level. It has the advantages of simple structure, reliable performance, small size, light weight, good anti-cavitation performance, low power consumption and convenient maintenance. It is suitable for industrial and urban water supply and drainage, and can also be used for agricultural drainage and irrigation and for transporting water or other liquids with physical and chemical properties similar to water, and the temperature is not higher than 80℃.
Type D demineralized water centrifugal pump is a horizontal single-suction multi-stage centrifugal pump for the transport of water and liquids with physical and chemical properties similar to water. Advanced hydraulic model, high efficiency, wide performance range. Pump running smoothly, low noise. The shaft seal adopts soft packing seal or mechanical seal, which is safe and reliable, simple structure, convenient and fast maintenance. The shaft is fully sealed structure, which ensures no contact with the medium, no rust and long service life. It is suitable for industrial and urban water supply and drainage, pressurized water supply of high-rise buildings, garden sprinkler irrigation, fire pressurization, long-distance water supply, heating, bathroom and other cold and warm water circulation pressurization and equipment supporting, especially suitable for small boiler water supply. It is also possible to change the material of the pump flow parts, seal form and increase the cooling system for transporting hot water, oil, corrosive or abrasive media.
DFP type corrosion resistant desalt centrifugal pump is a single or double suction, multi-stage, horizontal segment corrosion resistant self-balancing multi-stage centrifugal pump, used to transport corrosive liquid without solid particles, temperature below 80°C, pump inlet allowable pressure < 0.6MPa. Made of stainless steel, it has the characteristics of strong corrosion resistance, practical safety, economy, trouble-free operation and low maintenance cost. The use of excellent impeller hydraulic model or special double suction impeller structure, the use of symmetrical arrangement, cancel the balance device can basically eliminate the axial force, this type of pump cancels the balance disc or balance drum and other axial force balance mechanism, completely avoid the instantaneous change of pump conditions, balance disc or balance drum failure caused by rotor lock, parts damage, broken shaft, and even burn motor accidents. Because there is no balancing device, that is, there is no balance disc friction loss and no balance return loss, so the pump efficiency is 3% - 14% higher than the same type of multistage pump, because there is no balancing device, completely solve the balance device failure caused by the pump balance plate and balance plate seat wear or rotor bite and other failures, greatly extending the service life of the pump. Unique structural strength design. The single-stage lift of the pump is allowed to reach 1.5Mpa (150m), and the outlet pressure can reach 15Mpa(total lift 1500m), and the core parts composed of bearings and rotors are not affected by temperature changes, and have excellent thermal shock resistance. Users can according to the name of the conveying medium, concentration, specific gravity, use temperature and pump inlet pressure, reasonable selection of pump material, seal form, pump structure and determine the motor power.
The type IHF desalt circulating pump is a single-stage single-suction fluorine plastic alloy chemical centrifugal pump, which is designed and produced according to international standards and combined with the processing technology of non-metallic pump. The pump body uses a metal shell lined with polyperfluorinated ethylene propylene (F46); Pump cover, impeller and shaft sleeve are all made of metal insert with fluorine plastic integral sintering pressing, shaft seal with external bellows mechanical seal; Static ring selection 99.9%(alumina ceramic or silicon nitride); The moving ring is filled with PTFE material. It is characterized by excellent corrosion and wear resistance and reliable sealing performance. The pump has the advantages of corrosion resistance, wear resistance, high temperature resistance, no aging, high mechanical strength, no toxin decomposition, wide use temperature, transport medium temperature of -85℃-200℃ and so on. It is suitable for conveying any concentration of sulfuric acid, hydrochloric acid, acetic acid, hydrofluoric acid, nitric acid, aqua Regis, strong alkali, strong oxidant, organic solvent, reducing agent and other harsh conditions of strong corrosive media, is one of the new corrosion resistant equipment in the world. Its major advantages are advanced and reasonable structure, strong corrosion resistance, tight and reliable sealing performance, stable work, low noise, long service life.
