Pumps often occur during operation abnormal sound abnormal sound <br> <br> loose loose i.e. abnormal sound by the sound of the rotor shaft member in a loosened issued, the sound often with periodicity. If the circulation pump impeller and the sleeve are loose on the shaft (the clearance is even 1~3mm), a buzzing impact sound will be generated. If the pump shaft is bent at this time, the collision sound will be greater, because the impeller and the shaft sleeve have a tendency to droop on the shaft, and the clearance appears below the shaft. However, when the convex surface of the bend turns to the top, the impeller will be moved upwards. When the impeller is not moved upward, the convex surface of the pump shaft will turn downward and hit the impeller to move downwards. After that, the convex surface of the pump shaft is turned to the upper position again, and the impeller is again moved upward, and a periodic sound is then emitted. It must be pointed out that in this case the pump is very dangerous to move, in addition to the rotor parts caused by the leakage of air into the pump caused by the swing, the more serious it will make the impeller crack and the pump shaft fracture (at the edge of the fitting) Wait.
Some rolling bearing spacer bushings are not pressed by the bearing, and there may be intermittent collision noise with the shaft during operation. Because of the large gap between the spacer sleeve and the shaft, when it is not pressed in the axial direction, it will cause the clearance to appear below the shaft, but accidental reasons will bring the clearance to the top, due to the relationship of its own quality. Fall away from the sleeve, giving a slight knock with the shaft.
Low flow low flow <br> <br> different sound abnormal noise is mainly on the volute of the pump. Small flow noise is similar to cavitation sound, but some are larger, similar to the sound of stones thrown onto the pump casing. This is mainly a problem with the design of the pump tongue position.
Rolling abnormal noise <br> <br> new for rolling bearings, since during assembly the radial tightening force is too large, the rolling body is rotated difficult, will issue a low hum, when the bearing temperature rises.
If there is not enough oil in the bearing body, the rolling bearing will produce a uniform whistling sound during operation.
When the gap between the rolling element and the spacer is too large, a large hum can be generated during operation.
When peeling occurs on the surface of the raceway of the inner ring or the outer ring of the rolling bearing or on the surface of the rolling element, intermittent shocks and beating will occur during operation. If the rolling bearing is damaged (including breakage of the spacer, breaking of the rolling element, cracking of the inner and outer rings, etc.), during operation There will be crackling crackling.
<br> <br> impeller mainly damaged key or no water when starting the pump, can not normally be the energy to the water.
The pump is not filled with water or has a serious leak before starting.
The flow channel is blocked, such as the bottom valve of the population, the passage of the impeller, debris from the population, or the loss of the population door.
The geometric mounting height of the pump is too high.
The speed of the pump is too low, and it often occurs in the case of belt drives because the belt pulleys do not match or are too loose. The outlet pressure of the parallel cantilever centrifugal sewage pump is lower than the pressure of the mother tube, and the water top does not go out.
Incorrect rotation of the motor leads to reverse rotation.
The reason for the high bearing temperatures drop <br> <br> level is too low, the amount of oil entering the bearing is reduced.
Unqualified oil, influent impurities or emulsion deterioration.
The oil ring does not rotate and the bearing oil supply is interrupted.
The bearing cooling water is insufficient.
Damaged bearings.
For rolling bearings, in addition to the above reasons, if the bearing cover exerts too much force on the bearing, its radial clearance will be crushed and the bearing will lose its flexibility, which will also cause the bearing temperature to rise.
What is a single-hole faucet?
Single-hole Faucets mount onto sinks or counters through one hole, rather than three separate holes like larger faucets do. ... With this one exception of how the faucet lays out, however, the Single-hole Faucet connects to the water supply lines the same way three-hole faucets do.
Is single-hole faucet better?
Single-handle Faucets are much more user-friendly than Double-handle Faucets. Installation is simple and requires the drilling of only one hole. They're a common choice for older people as turning them is almost effortless for the infirm or those struggling with arthritis.
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