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Underground explosion-proof sewage pump advantages and disadvantages of what?
Submerged sewage pumps are generally sewage pumps, explosion-proof sewage pumps, as well as the liquid above the horizontal and vertical self-priming sewage pumps, pipe pumps, etc., we first talk about underground explosion-proof sewage Pumps, we all know that compared with the general horizontal pump or vertical sewage pump is certainly a lot of advantages, but the specific good where, is not good where? Here we talk about underground explosion-proof sewage pump advantages and disadvantages of what? Advantages: 1. Compact structure, small footprint. Submersible sewage pump submersible work, so can be installed directly in the sewage tank, without the need to build a dedicated pump room for the installation of pumps and machines, you can save a lot of land and infrastructure costs. 2 installation and maintenance easy. Small submersible sewage pump can be freely installed, large submersible sewage pumps are generally equipped with automatic coupling device can be automatically installed, installation and maintenance quite convenient. 3. Continuous operation for a long time. Submersible sewage pump due to pump and motor coaxial, short shafts, rotating parts light weight, so the bearing load (radial) is relatively small, longer life expectancy than the average pump. 4. There is no cavitation damage and irrigation water and other issues. Especially after the point to the operator has brought great convenience. Disadvantages: The most critical issue for the submersible sewage pump is the availability of the problem, because the use of submersible sewage pump is the case under the liquid medium is a mixture of liquid materials containing a mixture of liquid pump and the motor is very close Pump for the vertical layout , The weight of rotating parts and impeller pressure in the same direction. These problems make the submersible sewage pump in sealing, motor carrying capacity, bearing arrangement and selection requirements than the average sewage pump is higher. When the pump is working, the auxiliary impeller rotates with the pump main shaft, and the liquid in the auxiliary impeller will also rotate together. The rotating liquid will generate an outward centrifugal force that on the one hand withstands the liquid flowing to the mechanical seal and lowers the mechanical Sealing pressure. On the other hand prevent the solid particles in the medium from entering the friction pair of the mechanical seal, reduce the abrasion of the mechanical seal and prolong the service life of the mechanical seal. In a typical centrifugal pump, the power is always increased with the increase of the flow rate, that is to say, the power curve is a curve that increases with the flow rate, which brings about a problem for the use of the pump: when the pump is in At design duty point operation, the pump's power is generally less than the motor rated power and the pump is safe to use but increases as the pump head decreases (as can be seen from the pump performance curve) Centrifugal pump power also increases. Pump head is lower than the design conditions of the use of head lift, in practice are often encountered, a situation is the pump selection, the pump lift election too high, but the actual use of the pump is to reduce head Another situation that is used is that the operating point of the pump is not well established during use, in other words, the flow of the pump needs to be adjusted frequently. Another situation is that the pump needs to be changed frequently. These three conditions can overload the pump and affect the reliability of the pump. As the saying goes, Kim no shortage of red people are not perfect, things are two sides, underground explosion-proof sewage pump is also the same, both have their own strengths and weaknesses, the above is the advantages and disadvantages of underground explosion-proof sewage pump, hoping to have Help you to better understand and use it. Further reading: Canton Fair IFAT China building water industry leader article belongs to Internet industry (Xiamen) Co., Ltd. All are welcome to reprint, please indicate the source and author of: Asian pumps Network Editor: lindj (QQ / micro-channel:) Starting: http://beng.liuti.cn/ (Service Hotline:)