Overview of ZWL direct connection self-priming sewage pump
ZWL direct connection self-priming sewage pump is a kind of pump product with novel structure developed on the basis of repeated research on similar technologies at home and abroad. The direct connected sewage pump integrates self-priming and non clogging sewage discharge, adopts the axial backflow external mixing type, and through the unique design of the pump body and impeller flow passage, it can be like the general self-priming clean water pump, which does not need to install the bottom valve, but also can suck and discharge the solid blocks containing large particles, long fibers, sediments, waste mineral impurities, fecal treatment and all engineering sewage. It can be widely used in municipal sewage works, light industry, paper making, textile, food, chemical industry, electricity, petroleum, mining, pond aquaculture and other industries. The direct connected sewage pump is an ideal impurity pump for pumping solid particles, fibers, slurry, mixed suspension and other media in China at present. Compared with similar domestic products, this pump adopts a direct connection structure, which has the characteristics of simple and compact structure, less vibration, good self-priming performance, strong sewage discharge capacity, high efficiency and energy saving, and easy use and maintenance. Among the non clogging self-priming sewage pump series, various technical performance indicators rank the domestic advanced level, reaching the international advanced level, and has a broad application market and development prospects.
Model meaning of ZWL direct connection self-priming sewage pump
Product advantages of ZWL direct connection self-priming sewage pump
The ZWL direct connection self-priming sewage pump adopts a direct connection structure. Compared with similar domestic products, it has the characteristics of simple and compact structure, less vibration, good self-priming performance, strong sewage discharge capacity, high efficiency, energy saving, easy use and maintenance, etc. It is among the sewage pump series products with various technical performance indicators, and has a broad application market and development prospects.
Service conditions of ZWL direct connection self-priming sewage pump
1. The ambient humidity of chemical pump is 50 ℃, the medium temperature is 80 ℃, and the special requirements can reach 200 ℃.
2. The medium PH value is 6-9 for cast iron and 2-13 for stainless steel.
3. The medium weight shall not exceed 1240kg/m3.
4. The self suction height shall not exceed the specified value of 4.5-5.5m, and the length of suction pipe shall be 10m.
5. The passing capacity of the centrifugal pump: the diameter of suspended particles is 60% of the pump diameter, and the fiber length is 5 times of the pump diameter.
Working principle of ZWL direct connection self-priming sewage pump
Working principle of the pump: the pump body is equipped with a liquid storage chamber, which is connected with the pump working chamber through the upper return hole and the lower circulation hole, forming the axial reflux external mixing system of the pump. After the pump stops working, a certain volume of liquid has been stored in the pump cavity. When the pump starts, the liquid stored in the pump is thrown upward with air under the action of the impeller, the liquid returns to the working chamber through the grid of the gas-liquid separation pipe, and the gas is discharged out of the pump, so that a certain vacuum degree is formed in the pump to achieve self-priming.
