Sewage Pump Seal Technology And Pump Design Technology Overloading
Submersible sewage pump because of the pump and motor shaft rotation
, short, coaxial weight, so bearing parts of the radial load (on) was relatively small, life than general pump is much longer. Don't exist cavitation damage and irrigation water, etc. Especially after a operator has brought great convenience. Vibration noise, low temperature, motor of air pollution. In municipal engineering, industrial, building, hotel, hospital, water conservancy construction and other industries plays a very important role.
The key of submersible sewage pump is reliability problems, because of the use of sewage pump diving in liquid is under the situation, Transmission medium containing some solid materials is mixed liquid. Pump and motor on very near, Pump for vertical layout, rotating components with impeller under water stress weight above. These problems are made in diving sewage pump seal, motor bearing capacity, bearing arrangement and the requirements of the selection of sewage pump than average.
In order to improve the life, sewage pump manufacturer in the pump to protect system, namely in the pump leakage occurs, overload, overtemperature fault can make the automatic alarm, and automatic stop for repair. The submersible sewage pump set protection system is necessary, it can effectively protect the safe operation of pump.
But this isn't the crux of the problem, the protection system is just in the pump failure after a remedy, is a more passive way. The crux of the problem, should from fundamental thoroughly solve the pump seal, overload, etc, this is a more active measures. Therefore we put vice impeller sealing technology and overloading of pump design technique is applied to dive sewage pump, to improve the reliability of the pump seal bearing capacity, and extend the service life of the pump.
A deputy impeller sealing. Application of technology
The so-called vice impeller sealing refers to the pump impeller HouGaiBan near the reverse direction to install a coaxial open impeller. When the pump impeller, vice rotated together with the pump shaft of liquid will also vice impeller rotates, the liquid will produce a rotating centrifugal force, the outward flow of centrifugal hand against mechanical seal liquid, reduces the mechanical seal pressure. On the other hand stop medium solid particles into the mechanical seal, reduce the friction pair of mechanical seal grinding block wear and prolong its service life.
But deputy impeller sealing effect, still can rise to reduce axial force, in the submersible sewage pumps axis powers to the liquid in the impeller role if the differential pressure and the rotating parts of gravity, the two force direction is the same, is by adding two forces. It can be seen in exactly the same performance parameters, under the situation of submersible sewage pump of axial force to pump more than general horizontal and vertical pumps to more difficult than the balance. So in the submersible sewage pumps, bearing damage easily its reason and axial force has a great relationship.
But if installed in impeller, deputy vice impeller on liquid pressure difference with the direction of the force is the opposite of two forces that can counteract part of the axial force, also have the effect of bearing life extension. But deputy impeller sealing systems use have a weakness, that is, in part to consume energy on the impeller, usually around 3%, but as long as reasonable design, can reduce the partial loss to the minimum.
No overload of pump design technology application
In general, the centrifugal pump is the power flow increases with the power curve, i.e., a root increased with the flow of the curve, the rise of pump use will bring a question: when the pump running in design, generally speaking, pump power than motor power rating, the use of the pump is safe: But when the pump head down, flow will increase, power also increases.
When flow over design flow and reach a certain value, the input power of the pump power rating will probably exceed motor and motor overloaded and burned. Motor overloaded run-time or protection system to pump stop turning, Either protection system failure makes motor burn.
Pump hit below design head used, in reality is often meet failure:
1. in the pump selection, pump head too high, while the actual choose when using the pump is lower head.
2. in the use of the pump working point is not so good, in other words pump flow need often adjust, Often used to change the site pumps.
3. the message may make pumps and the use of pump overload. Can say, the head of the characteristic with no pump, its usage scope will be largely limits.
by: selina00123
What Are The Elements Of A Successful E-commerce Web Design Cushion Covers In Elegant Designs All You Want To Know About Media Room Designs Making The Most Of Your Stationery Design Surfing And Fishing Brisbane Style Yahoo Store Design For Content Display Enhancements Part 6 The Antique Style Radiator Valve Choice For Cast Iron Radiators Benefits And Drawbacks Of Designer Skin Lotion What"s The Do For Hairstyles To Go With Prom Dresses For 2010? The Basics Of Inside Design Truck Accessories - Work In Style How To Select A Leading Web Design Company To Fulfill Your Web Design Goals The Best Hair Styles For Short, Medium And Long Hair