IS, IR type horizontal single-stage single-suction clean water centrifugal pumps are energy-saving pumps jointly designed by the whole country. The advantages are as follows: the hydraulic performance of the whole series is reasonable, the user selection range is wide, and the maintenance is convenient; the efficiency and suction lift reach the international average advanced level. This type of pump is suitable for industrial and urban water supply and drainage, and can also be used for agricultural irrigation and transportation of clean water or other liquids with physical and chemical properties similar to clean water. The temperature is not higher than 80 ℃.
Features
1. IS and IR horizontal single-stage single-suction clean water centrifugal pumps are designed according to the performance and dimensions specified by the international standard ISO2858, mainly consisting of pump body, pump cover, impeller, shaft, sealing ring, shaft sleeve and suspension bearings. etc. composition.
2. The pump body and pump cover of IS and IR horizontal single-stage single-suction clean water centrifugal pumps are divided from the back of the impeller, which is the so-called rear door structure. The advantage is that the maintenance is convenient, the pump body, the suction pipeline, the discharge pipeline and the motor are not moved during maintenance, and the rotor part can be withdrawn for maintenance only by removing the intermediate connecting piece of the extended coupling.
3. The casing of the pump (ie the pump body and the pump cover) constitutes the working chamber of the pump. The impeller, shaft and rolling bearing are the rotors of the pump. The suspension bearing part supports the rotor part of the pump, and the rolling bearing is subjected to the radial and axial forces of the pump.
4. In order to balance the axial force of the pump, most pumps are provided with sealing rings at the front and rear of the impeller, and a balance hole is provided on the back cover of the impeller. Due to the small axial force of some pumps, there is no seal on the back of the impeller. Ring and balance hole.
5. The axial sealing ring of the pump is composed of packing gland, packing ring and packing to prevent air intake or a large amount of water leakage. If the impeller of the pump is balanced, the cavity with soft packing is connected with the suction port of the impeller. If the liquid at the inlet of the impeller is in a vacuum state, it is easy to take in air along the surface of the shaft sleeve, so a packing ring is installed in the packing cavity to pass through. The small hole on the pump cover leads the pressure water in the pump chamber to the packing ring for sealing. If the impeller of the pump does not have a balance hole, since the liquid pressure on the back of the impeller is greater than the atmospheric pressure, there is no air leakage problem, so the packing ring may not be installed.
6. In order to avoid shaft wear, a shaft sleeve is installed at the part where the shaft passes through the packing cavity. There must be an O-ring between the sleeve and the shaft to prevent air intake or water leakage along the mating surface.
7. The transmission mode of the pump is connected with the motor by lengthening the elastic coupling. The rotation direction of the pump, viewed from the driving end, is clockwise.
Model meaning
For example: IS80-65-160A
IS-Single-stage single-suction clean water centrifugal pump
80-Suction port diameter (mm)
65-diameter of discharge port (mm)
160-Nominal diameter of impeller (mm)
A-Impeller first cut