Water ring vacuum pumps do choose to meet demand -

in recent years, the industry to solve the problem of corrosion of pump products question has carried on the exploration and research for a long time, the water ring vacuum pump for energy saving, wide range of corrosion resistant advantages favored by the market.

it is understood that due to the proportion of the materials with a range of small, high strength, corrosion resistance, therefore the water ring vacuum pump has good corrosion resistance, compact structure, energy-saving advantages of high efficiency, reliable operation, better solve the disadvantages of the existing pump products, suitable for suction or pressure to send air, corrosive gas, and do not contain suspended particles or crystallization water, organic, liquid slag, widely used in chemical, pharmaceutical and other industries, used for vacuum pump, vacuum filter, vacuum drying, vacuum concentration, vacuum evaporation, vacuum distillation, vacuum crystallization and plastic molding and so on.

the industry pointed out that, especially for the chemical industry, pharmaceutical industry has seen the by-product gas such as hydrogen chloride, corrosion resistant water ring vacuum pumps can be used to effectively the corrosive gas suction and compression processing, the formation of high concentration of byproduct hydrochloric acid and so on, both reached the requirements of environmental protection, and formed the circular economy.

at present, a lot of water ring vacuum water pump styles on the market, many customers reflect, don't know how to make selection. To this, an enterprise technical personnel shows four Suggestions for water ring vacuum pump selection, hope it will be of reference for the industry.

choose speed lower specification as we have learned, at present, the water ring vacuum pump have multiple speed to choose the same specifications. Among them, the specifications of the pump, because of the large impeller diameter larger so speed is low, so under the premise of same swept volume, should choose as far as possible speed lower pump, which is less than the power of consumption, more efficient.

in addition, the large size of water ring vacuum pump because of the long blade that is long, the curvature of the fluid, streamline the approximate to linear, fluid flow near graded flow, fluid flow in the secondary vortex and boundary layer caused by the energy loss is small.

it is reported, the influence of water temperature should be considered due to the domestic and foreign water ring vacuum pump performance curve on the technical documents and technical data are on the premise of inlet water temperature of 15 ℃. Thus, when picking water ring vacuum pumps, should give full consideration to the actual water temperature effects on gas.

the industry said that because the majority of users in China make up water temperatures are between 25 ℃ and 35 ℃. So choosing water pump should be appropriate increase gas than those of the technical documentation.

considering the effects of inhaling resistance

as a result of gas suction location often below the bleak look-out, water ring vacuum pump is far away, Some coal mine up to thousands of meters) , suction pipe is too long, therefore, inspiratory resistance loss should be considered, and the coal mine system by using the formula for calculating the suction resistance is calculated, the coarser should be adopted when arranging pipeline suction pipe, reducing the loss of resistance, and try to reduce the right-angle bend, in order to achieve the purpose of improving the efficiency of inspiratory.

exhaust with micro positive pressure on the selection of

it is understood that at present some for pumping the gas emission in coal mine to far away places or compressed into the storage tanks, exhaust pressure generally at 0. 02 ~ 0. Between 5 MPa, G. Because of the water ring vacuum water pump performance curve of technical documents and technical data are obtained under the exhaust pressure for a standard atmospheric pressure, therefore should be considered during selection of the exhaust pressure, pump cavity internal reflux increases the impact on the swept volume.

in addition, due to the exhaust pressure, pump shaft power increase, with the drive power should also increase, in this case, the manufacturer shall provide test performance curve and model selection of the corresponding technical data, in order to fully meet user requirements.

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