CSP 300-140…800U pumps are designed to pump cold and hot water with hydrogen concentration of ðÍ - 6,5-8,5, mechanical impurities mass % - 0,5%, no more and the size of solids - 0,5mm, no more.
Temperature of pumped water is from 1 up to 95°Ñ.
TECHNICAL CHARACTERISTICS (U – unified, U- low pressure )
TECHNICAL CHARACTERISTICS (U – unified, H – high pressure)
CSP 300-140…800U pumps are horizontal, multi-stage and unified ones. The pump consists of the distributors, fitted in the housings of the sections, input and discharge covers, brackets of the front and tail bearings. Pump sections are connected by means of studs.
Pump rotor is a shaft whereon impellers and protective bushings -distance, bearing ones and shaft housing are fixed. Spherical rotating double ball bearings serve as rotor supports. Rotor axial thrust is balanced by means of hydraulic discharge device – hydraulic balancing device.
These are main design distinctions of CSP 300-140…800U pump in comparison with CSP 300-120…600 pump:
- availability of a distributor with a delivery space developed in axial and radial directions;
- use of impellers of two designs within unified enclosure. The impellers provide properly rated pressure to the stage 60 and 72 m;
- use of rigid shaft;
- it is acceptable to assemble a pump with 11 stages, that permits to increase the maximal pressure up to 660 m (low pressure version- U) and up to 800 m (high pressure version – Í);
- use of casting and welding steel impellers with space form of the blades in their input and central parts which provide equal liquid flow in the channels with small hydraulic losses.
Input and discharge covers, parts of a distributor enclosure, brackets are made of carbon steel 35C (C - cast), a shaft is made of alloy and chromium steel 40C (C- chromium), impellers, elements of a distributor flow part are made of corrosion-resistant steel, a balancing device and a center plate of a discharge device are made of alloy corrosion-resistant steel.
How to select the required pump type.
It is efficient to use a pump for pumping plants of mines and pits with hour-long water flow more than 150 m3/h and physical height of pump lift Íã from 110 up to 750 m.
Let’s calculate the required pump pressure Í
For example, if the pump lift Íã = 530 m and the pressure pipe total length L = 1000 m, we’ll obtain the following: 530 + 0,06 • 1000 = 590 m.
Select according to the tables the proximate pump pressure Í = 600 m, the quantity of pump stages – 10.
Identification of the selected pump in the application form: CSP 300-600U, version U, with rated delivery flow 300 m3/h and rated pressure 600 m.