Sewage pump is a non-clogging pump, with many forms: such as submersible and dry two, the most common submersible WQ submersible sewage pump, the most common dry sewage pumps such as W-type horizontal sewage Pump and WL vertical sewage pump two. Mainly used to transport urban sewage, manure or liquid containing fiber. Paper and other solid particles of media, the medium is usually the temperature is not more than 80 ℃. Due to the media being conveyed contain easily entangled or bunched fibers. Therefore, the kind of pump flow channel is easy to block, once the pump is blocked, the pump can not work normally, or even burn the motor, resulting in poor drainage. To urban life and environmental protection have a serious impact. Therefore, the anti-clogging and reliability of the sewage pump is an important factor in the pros and cons.
Like other pumps, impellers and pressurized water chambers are the two core components of a sewage pump. The merits of its performance, also on behalf of the pros and cons of pump performance, sewage pump anti-clogging performance, the level of efficiency, as well as cavitation performance, anti-erosion performance mainly by the leaf pump and pressurized water chamber to ensure that the two major components.
Structure of the impeller The structure of the impeller is divided into four categories: leaf-type, swirl, flow channel, spiral centrifugal four, open semi-open impeller manufacturing convenience, causing clogging in the impeller, you can easily clean And maintenance, but in the long run, under the abrasive particles will make the gap between the blade and the pressure chamber inside the wall increases, thus reducing the efficiency. And the increase of clearance will destroy the pressure distribution on the blade. Not only produces a large amount of vortex loss, but also increases the axial force of the pump. At the same time, due to the increased clearance, the stability of the liquid state in the flow passage is destroyed, causing the pump to vibrate. This impeller is not easy to transport Large particles and long fiber media, from the performance point of view, the low efficiency of the impeller type, the highest efficiency of about 92% of ordinary closed impeller, lift curve is relatively flat.
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