This question seems to us in the industry, like asking: What's the difference between potatoes and potatoes?
Is the middle open pump and the double suction pump the same kind of pump? What's the difference? The answer is no difference, because they are the same thing. Double suction pump, also called open pump; Middle open pump, also called double suction pump. Why are there two names?
Because the full name of this pump type: single stage double suction horizontal open centrifugal pump. In order to facilitate communication, it is referred to as "middle open pump" or "double suction pump" instead. In daily use, we still use more "open pumps".
This kind of pump with a particularly large mouth and the whole pump body looks like a snail is a medium-open pump. This type of pump structure is relatively simple, mainly composed of pump body, pump cover, impeller, pump shaft, bearing, sleeve and sealing parts. It is because its structure is relatively simple, so there are many advantages: high efficiency, long life, low operating costs, convenient installation and maintenance.
In particular, the installation and maintenance is convenient, the inlet and outlet flanges of the pump body are located in the lower pump body, and a few nuts are screwed to open the volute of the pump body, so that the rotor can be removed without disassembling the on-site water transmission pipe (the rotor is the impeller, the pump shaft these rotating parts).