Miriam Miriam Bell Bell http://www.ebo17.com news circulating water pump latest offer March 31 keywords Products shipped to the brand name price model pumps circulating water pump Xi'an is also 1880 SHB-3 water ring vacuum pump is by changing the volume of the pump chamber to achieve suction, compression and exhaust, so it belongs to the variable capacity pump. Water ring pumps and other types of mechanical vacuum pump compared to the following advantages: simple structure, less precision, easy to process. Compact, high number of revolutions of the pump, and can be directly connected with the motor without reduction gear. Therefore, the structure of small size, you can get a large displacement, the area is also small. Essentially isothermal compression of the gas, i.e., a small temperature variation during compressed gas. Since no metal friction surface cavity pump, the pump is no need for lubrication, and wear small. The seal between the rotating member and the fixing member may be done directly by the seal. Inspiratory uniform, smooth and reliable, simple operation, easy maintenance. Water ring vacuum pump also has its disadvantages: low efficiency, typically about 30%, preferably up to 50% lower vacuum, not only because of restrictions on the structure, but more importantly is subject to the saturated vapor pressure of the working fluid. restrictions. Water as the working fluid, the ultimate pressure can reach 2000 ~ 4000Pa. Oil is used as the working fluid, up to 130Pa. Anyway, since water ring vacuum pump in the gas compression is isothermal, it can be exhausting flammable and explosive gases. Since there is no exhaust valve and a friction surface, it can be pumped with gas in addition to dust, gas and gas condensate water mixture. With these outstanding features, despite its low efficiency, and is still widely used. Miriam Bell 

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