First, a good series of centrifugal pumps IS series belongs to single-stage single-suction centrifugal pump, the pump is based on the international standard ISO 2585 designed a new series of products. Flow range of 6.3 ~ 400m3 / h, head range of 5 ~ 125m. It is characterized by a wide range of use, easy maintenance, high degree of standardization, performance and size in line with international standards; pump efficiency to international standards. The series of pumps suitable for industrial and urban water supply and drainage, but also can be used for farmland irrigation and drainage and other physical and chemical properties similar to clear water, liquid temperature is not higher than 80. C. Model meaning: IS100-65-250A, If single-stage single-suction water pump l 100 a water pump inlet diameter (mm) i 65 a water pump outlet diameter (mm) i 250 impeller diameter (mm) i A an impeller diameter first Secondary turning. Second, S (Sh) series of double suction centrifugal pump Sh series double suction centrifugal pump is one of the most common purpose water supply and drainage pumps in water supply, urban water supply, industrial and mining enterprises recycling technology, farmland irrigation, drainage and other aspects of a wide range of applications, the flow rate of 90 ~ 20000m3 / h, lift for lo ~ loom. S series and Sh series double suction centrifugal pump structure similar. With large flow, high efficiency i5 (Sh) series of pumps import and export pumps are below the axis of the center line, the pump cover as long as the maintenance of the joint surface of the nut loose, you can uncover the pump cover, all the parts Remove, do not have to move the motor and suction water pipe. Therefore, the series pump maintenance is very convenient. The normal rotation of the pump is seen from the direction of the motor pump to counterclockwise rotation. See the unit from the direction of the pump, the motor is arranged on the right. When making the unit layout, the motor can also be placed on the left as needed. But when ordering to pump, pump manufacturers should explain. Model significance: 200563A: 200 a pump inlet diameter of 200mmi 5 a single-stage double-suction centrifugal pump; 53 one lift of 63mi A first diameter of an impeller cutting. Three D (DA) series of multi-stage centrifugal pump Multi-stage pump work, the liquid inhaled from the suction pipe, the former impeller out of the impeller after the impeller, each passing through a bucket impeller, the liquid to obtain a primary energy. Therefore, the total pump head with the impeller series increases. Pump body pump hook section type, from a front (water), a back (out of water) and a number of middle (impeller part), the various sections of the bolt as a whole. The pump inlet is located in the front section, the outlet is located in the rear section. Water flows from one impeller to the other, passing through the deflector. The structure of the deflector is shown in Fig. 2-21 (a). It is a ring with guide vanes and is fixed on the pump casing with a nut when mounted. As the water flows through the flow deflector, it behaves as if the water flows through the guide vane of an immobile turbine. Therefore, such a multi-stage pump with flow deflector is often referred to as a vane centrifugal pump (also known as a turbine centrifugal pump ). Figure-21 (b) shows the flow of water in the pump housing. As all levels of impeller are single-suction type, suction side toward one side, the axial thrust will increase with the impeller series increases. Therefore, in the segmented multistage centrifugal pump, the elimination of axial force is a problem that can not be ignored. In order to balance its axial thrust, usually install the balance disc device, as shown in Figure 2-22. Balance plate with key fixed to the pump shaft, with the shaft rotation. In the segmented multistage pumps, after the balance disc is installed, the balance disc in the pump operation is always in a kind of dynamic equilibrium. Thus, the balance disc device can automatically balance the axial force. Therefore, multi-stage pump, most of this balance method. In addition, the impeller can also be arranged using symmetrical arrangement, balance drum device and other methods to balance the axial thrust. Multistage centrifugal pump structure is more complex, inconvenient maintenance, the pump efficiency is lower, but with a higher head. Field range of 100 ~ 650m, the flow range of 5 ~ 720m3 / h. Model significance: IOOD16A × 5, 100 a water pump inlet diameter (mm); D a single suction multi-stage sub-type; 16 a single-stage lift 16 (m); A a water pump impeller diameter first turning i 5 a Impeller series. This article Keywords: water pump Stainless Steel Screw,Threaded Rod Motor Co., Ltd. , http://www.ns-fasteners.com