2016年11月13日星期日

Analysis of pump type selection

Convenient pipe installation, can be widely used for general pipeline pump for high-rise building pressurized water use, and can transport particles containing fiber wastewater, except for conveying the sewage, but also suitable for drainage pump, filter cleaning condensate pump etc.. Enterprise unit wastewater discharge. Urban sewage treatment plant discharge system. Subway, underground room, air defense system drainage station. The hospitals, hotels, high-rise building sewage discharge. The residentialsewagepumping station. The municipal engineering construction site in the mud, dilute emissions. Water supply device, tap water factory. The farms and rural sewage irrigation. To exploration and mining equipment for water treatment. The place of the shoulder arm, pumping mud. The use condition of water temperature is less than or equal to 60 DEG C, the liquid pH value of 4 ~ 10.
The unique leaf or double blade impeller structure, greatly improve the through capacity of sewage, which can effectively through 5 times of pump diameter and pump diameter solid particles 50%.
Mechanical seal using a new type of hard corrosion-resistant tungsten carbide material, while the seal is improved to double end seal, so that it is in the oil chamber for a long time to run, can make the pump safe and continuous operation for more than 8000 hours.
The compact structure, small volume, low noise, energy saving effect, convenient maintenance, no need of pump room, dive into the water to work, greatly reduce the project cost.
The sealing oil pump is arranged inside the Water Leakage high-precision interference detection sensors, and embedded within the stator windings of the thermal components, the absolute protection of the pump motor.
And according to user needs can be equipped with automatic safety protection control cabinet for the pump Water Leakage, leakage, overload and over temperature of absolute protection, improve the safety and reliability of the product.
The float switch solution based on the required changes, automatic control of pump start and stop, without special care, it is very convenient to use.
And according to user needs with double rail automatic coupling installation system, which brings great convenience to installation and maintenance, this may not enter the sewage pit.
It can be used in the whole range of lift, while the motor is not overloaded.
We have two different installation methods, fixed automatic coupling installation system, mobile free installation system.
Pipeline sewage pump installation technology is the key to determine the installation height of the pipeline sewage pump is the suction process. The height is the vertical distance from the water surface to the center line of the centrifugal pump impeller, it allows suction confused on a high vacuum, high vacuum suction on the vacuum pump inlet section refers to the value of the pump product specifications or nameplate allowed, and in 1 the standard atmospheric pressure, water temperature of 20 DEG C case the determination to test. It does not take into account the current situation of water after the water pipe. The pump installation height should be allowed to suck up the vacuum after deducting the suction pipe loss head, the remaining part of the value, it is to overcome the actual height of water absorption.
Pump installation height can not exceed the calculated value, otherwise, the centrifugal pump will not be pumped to the Sheung shui. In addition, the calculated values affect the size of the resistance water pipe head loss, therefore, should adopt the shortest piping layout, and minimize the elbow and other parts, can also be appropriately equipped with larger diameter pipe to reduce the flow tube.
It should be noted that the elevation of the installation site and water temperature of the sewage pump installation site is different from the test conditions, such as local elevation more than 300 meters or more than 20 of the water temperature is pumped, the calculated value to be modified. Atmospheric pressure at different altitudes and the saturation vapor pressure at temperatures above 20 c.. However, when the water temperature is below 20 degrees Celsius, the saturated vapor pressure is negligible.
From Li Shen pipeline sewage pump installation technology, suction pipes require stringent tightness, can not leak, Water Leakage, otherwise it will damage at the pump inlet vacuum, pump out the water, even when serious pumping Sheung shui. Therefore, to do a good job in the pipeline interface, to ensure the quality of the construction of the pipeline connection.

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