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Centrifugal agricultural irrigation river water pump
Centrifugal agricultural irrigation river water pump
QI model pump is single-stage end-suction(axial suction) cantilever type centrifugal pump, which is used to transport corrosive liquid with viscosity similar to water and without solid particles. The marked and rated performances and dimensions adopt ISO2858 international standard.
It has such characteristics as wide range of performance, high efficiency, high mechanical, chemical and physical level and convenient maintenance etc. It is energy saving type product recommended by the nation with its efficiency being 5% greater than that of other similar model pump.
The temperature of transported media of QI model pump is -20 – 125 C deg . Through adopting cooling method, it can transport media with higher temperature if necessary, and is applied to transport various corrosive media or media in which pollution is forbidden similar to water in such industries as chemical industry, petroleum, metallurgy , electric power, papermaking, food, pharmacy and synthetic fiber etc.
Centrifugal agricultural irrigation river water pump
| Type |
Flow (m3/h) |
Head (m) |
Power (KW) |
| QI50 | 3.4-15 | 3.7-68.8 | 0.55-11 |
| QI65 | 6.8-30 | 3.7-126.8 | 0.55-30 |
| QI80 | 13.6-60 | 3.6-128 | 0.55-45 |
| QI100 | 27.3-120 | 3.4-115.5 | 1.5-75 |
| QI125 | 56-240 | 8.5-132.5 | 2.2-110 |
| QI150 | 99-240 | 12.4-57.5 | 15-55 |
| QI200 | 197.7-460 | 14.8-55.8 | 30-90 |
Centrifugal agricultural irrigation river water pump
1.QI type pump is designed with performance and dimensions specified to the International Standard ISO 2858. The major components are casing (1) casing cover (2) impeller (3) shaft (4) wear ring (5) shaft sleeve (8) bearing bracket (12) etc. ( See Fig 1 )
2.QI pump is divided into the casing and the casing cover from the back face of the impeller i.e. back pull-out design.QI pump has the advantages for ease of inspection and maintenance. When inspection, only dismantle the intermediate connector between pump coupling and motor coupling. The rotating element can be completely removed without disturbing the casing, suction and discharge pipeline and motor.
3.The pump volute form is composed of casing and casing cover. The rotating element consists of impeller, shaft and rolling bearing. The rotating element is carried by the rolling bearings mounted in a hanging bearing bracket and radial and axial thrust is supported by the bearings.
4.In order to balance axial thrust, there are both wear rings in front and at the back of the majority of the impeller and the balance hole is on the back shroud of the impeller. The axial thrust of some pumps is not big enough, so there is no wear ring and balance hole at the back of the impeller.
Centrifugal agricultural irrigation river water pump
5.The shaft seal consists of packing gland (9) water seal ring (10) and packing (11) to prevent air from in taking or the amount of leakage. If there is a balance hole of the impeller, cavity for soft packing connects to the impeller entrance. If liquid of the impeller entrance is at vacuum state, it is easy for air entraining along the surface of the shaft sleeve. So water seal ring is in the stuffing box. Pressure water in the pump volute is led to water seal ring to be sealed. If there is no balance hole of the impeller, liquid pressure at the back face of the impeller is higher than atmosphere. There is no air leakage, so the water seal ring can not be packed.
6.The shaft sleeve is on the shaft to avoid excessive shaft wear. There is “O” ring between the shaft and the shaft sleeve to prevent air entrance or water leakage along the matched surface.
7.Drive is transmitted from the motor to the pump by a flexible coupling with the intermediate connector. Rotation is clockwise when viewed from the driven end.
Centrifugal agricultural irrigation river water pump
Contact: Sherry Lee
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