Deep Well Vertical Submerged Centrifugal Pump , High Concentration
Centrifugal Sump Pump
Model meaning
100QV-SP(R)
100---Outlet diameter (mmQ
RV---Frame type
SP---Slurry pump submerged in sump
R---Rubber liner
Vertica pump parts :
| Metal material | Rubber Material |
| Item | Code | Item | Code |
| Chrome alloy | Cr+Mo+Ni | Natural rubber | Ru |
| Cast iron | - | Synthetic rubber
| Ternary ethylene, Nitrile rubber, Neoprene rubber, Butyl rubber |
| Grey iron | HT |
| Ductile cast iron | QT |
| Stainless Steel | SS304, SS306, SS316L |
| Duplex stainless steel | CD-4MCu |
| Bronze | - |
Knowledge for slurry pump
The problem for centrifugal pump puming no water and vacuum
When centrifugal pump working , there will always be a variety of
problems.The failure of centrifugal pump pumping water is one of
problems
1) the vibration of the pump body is large, and the dynamic and
static ring of the mechanical seal will intermittently collide and
cause leakage.
2) the pressing of the mechanical seal's dynamic and static ring is
the sum of the medium pressure and the pretightening force of the
spring. When the air is pumped, the pressure of the medium will
not, the contact pressure of the dynamic and static ring will
become smaller and the seal is invalid.
3) after the pump is evacuated, the mechanical seal end face of the
mechanical seal ring has lost the cooling and lubrication, dry
friction and mechanical seal failure by using the self flushing
scheme (that is, using the pump medium).
1, the motor current is down.
2, the pressure fluctuates greatly.
3, abnormal flow of flow.
4. The sound of murmurs.
5, the pump body vibrates.
6, the pump cylinder temperature rises.
Some reasons of pumping no water
1, gas leakage at the entrance of the centrifugal pump.
2, the entrance of the centrifugal pump is blocked.
3, the pressure of the entrance of the centrifugal pump is not
enough.
4. The temperature of the inlet of the centrifugal pump is too high
and the saturated steam is too large.
5, the inlet valve of the centrifugal pump is not open or the valve
core is broken off.
6, the outlet of the centrifugal pump is too large (small).
7. The centrifugal pump seals the oil with water.
8. The liquid level in the centrifugal pump tower or container is
low or no liquid level.
9. The impeller of the centrifugal pump or the inner grinding ring
is badly worn.
