Multistage pump is a centrifugal pump, but also rely on the rotation of the impeller to obtain centrifugal force, thus the material. Until the density of the gas reaches the working range of the mechanical vacuum pump and is withdrawn to gradually obtain a high vacuum. In the multi-stage pump body with the right amount of water as the working fluid. When the impeller rotates clockwise, the water is thrown around by the impeller. Due to the centrifugal force, the water forms a closed circle of approximately equal thickness depending on the shape of the pump chamber. The inner surface of the lower part of the water ring is just tangential to the hub of the impeller. The upper inner surface of the water ring is just in contact with the top of the blade (in fact, the blade has a certain insertion depth in the water ring). At this moment, a crescent-shaped space is formed between the impeller hub and the water ring, and the space is divided into a plurality of small cavities equal to the number of the blades by the impeller. If the lower part of the impeller 0 ° as a starting point, then the impeller 180 ° before the rotation of the small chamber volume from small to large, and the end of the suction port communicating, when the gas is inhaled, when the inhalation end of the small cavity When the impeller continues to rotate, the small cavity becomes smaller and the gas is compressed; when the small chamber communicates with the exhaust port, the gas is discharged outside the pump. In summary, multi-stage pump is based on changes in the volume of the pump to achieve suction, compression and exhaust, so it is a variable volume centrifugal pump. Multistage pumps can be used in many industrial sectors such as petroleum, chemical, machinery, mining, light industry, medicine and foodstuffs. In many industrial processes, such as vacuum filtration, vacuum water diversion, vacuum feed, vacuum evaporation, vacuum concentration, vacuum resurgence and vacuum degassing, multistage pumps are widely used. Can be evacuated flammable, explosive gas, in addition to pumping dust, water-containing gas, therefore, the water ring pump applications are increasing
Digital PH ORP Controller
The digital PH ORP Controller is designed for digital pH and ORP sensors. As a controller for water quality analysis, Daruifuno's digital pH ORP controller is equipped with 2 SPST relays, which can set high and low alarms, control the dosing of the dosing pump, and keep the pH of the solution within a certain range.
The digital PH ORP Analyzer can only be connected with the digital sensor, and the controller itself also has an RS485 interface and supports the MODBUS communication protocol. The large size of the digital ph orp meter is 120*120*144mm, suitable for panel, wall and pipe installation, and we provide installation accessories. The digital pH ORP controller also has time and historical data functions, and saves the latest 100 maintenance records, which is more convenient for customer management. We also provide the matched digital pH and ORP sensors, they can measure 0~14pH and -2000~+2000mV. The digital pH ORP analyzer can be used for various water treatment applications. If you are interested in our products, please contact us for more details.
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Suzhou Delfino Environmental Technology Co., Ltd. , https://www.daruifuno.com
