What is DA pumps, DA type centrifugal pump, DA type multistage centrifugal pump?

DA pump is horizontal single-suction multi-stage, sectional centrifugal water pump is used to transport water and non-corrosive liquids, change the spare parts such as impeller, seal and shaft sleeve material, also can be used to transport corrosive medium, suitable for mine drainage, factories and urban water supply, liquid the highest temperature should not exceed 40 ℃. Has the advantages of high efficiency, small volume, parts processing technology of high precision, pump shaft conditioning treatment, according to the rules for type testing and factory test high quality requirements, product GB/T5657 - 1995 'centrifugal pump technology conditions ( Ⅲ class) 'Standard.

D type horizontal multi-stage centrifugal pump is in DA type centrifugal pump on the basis of the latest developed multistage pump, used for conveying water or physical and chemical properties similar to water other liquid, the liquid temperature shall not exceed 80 ℃. With high efficiency, wide range of performance, smooth running safety, low noise, long life, easy installation and maintenance, etc. Can also by changing the pump flow components, sealing material form and increase the cooling system used in conveying hot water, oil, corrosive or abrasive media. Execute JB/T1051 - 93 'multi-stage centrifugal water pump type and basic parameters' standards.

DA type pump type:

single-suction multi-stage segmental vertical centrifugal pump, the flow rate of 25 ~ 350 m 3 /, head of 25 ~ 550 meters;

such as 3 da8 x 9:

3 - — The suction pipe diameter is 3 inches;

      DA— — This type of multi-stage sectional centrifugal pump, and the old model of SSM similar, suitable for cold water 40 ℃ or less;

      8— — Than the number of revolutions are after 10 except into integer quotient;

      9— — Impeller series 9;

DA type multistage centrifugal water pump structure:

DA type pump is multi-stage segmental type, its suction is located in the segment into horizontal direction, the water discharge nozzles in the water on the vertical, the head can be used according to need and increase or decrease the pump series, the assembly of this type of pump performance or not the effect of special significant, than it is the export and import the relative position of the guide vane impeller, the impeller per level of vomit export hub must be aimed at guide vane import center, among them a slight deviation will make the whole performance is affected, efficiency is lower, so it is important to note that at assembly after repair if there is deviation must be adjusted. shaft seal for packing seal, also can be changed to mechanical seal.

DA type multistage centrifugal water pump to balance the axial force of pump, most of the pump impeller have before and after sealing ring, and is equipped with balance on impeller HouGaiBan hole, because some pump axial force is not big, the impeller did not set a seal ring and balance holes on the back.

DA type centrifugal pump rotation direction: from the motor, the pump is clockwise.

DA type multistage centrifugal pump main parts material: manufacturing materials for main parts: water, in the middle, as well as the water pressure parts - — Ordinary cast iron, nodular cast iron or stainless steel: impeller - — Cast iron, cast copper or stainless steel: shaft - — Carbon steel or stainless steel.

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