the products world
ZW self-priming non-clogging sewage pump
ZW series non-clogging self-priming sewage pumps are successfully developed based on repeated studies of similar technologies at home and abroad-a new product with a new structure. zW self-priming pump integrates self-priming and non-clogging blowdown. It adopts the axial reflux external mixing type. Through the unique design of the pump body and impeller flow channel, it can be installed like a general water pump without the need for a bottom valve and drinking water. It can also suck and discharge liquids containing large particles of solid and long fiber impurities, which can be widely used in municipal sewage projects, river pond breeding, light industry, papermaking, textile, food, chemical industry, electricity industry, fiber, slurry and mixed suspension and other chemical media The most ideal impurity pump. Compared with similar domestic products, Zw self-priming sewage pump has the characteristics of simple structure, good self-priming performance, strong sewage capacity, high efficiency and energy saving, convenient use and maintenance, etc. Various technical performance indicators have reached the international level, and have broad application markets and development prospects.
Conditions of Use:
1. Ambient temperature ≤50 ℃, medium temperature ≤80 ℃, special requirements up to 200 ℃.
2. PH value of the medium is 6-9 cast iron, stainless steel 2-1 3.
3. The media weight does not exceed 1240kg / m3.
4. Self-priming height cannot exceed the specified value of 4.5-5.5 meters, and the length of the suction pipe is ≤10 meters.
5. Through diameter of suspended particles is 60% of pump diameter, and fiber length is 5 times of pump diameter.
Structural characteristics and working principle:
ZW series self-priming non-clogging sewage pump is mainly composed of pump body, impeller, back cover, mechanical seal, pump shaft, bearing seat, inlet valve, gas-liquid separation pipe, water adding valve, inlet and exhaust pipe.
The working principle of the pump: a liquid storage chamber is provided in the pump body, and is communicated with the pump working chamber through the upper return hole and the lower circulation hole to form an axial return 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 is started, the liquid stored in the pump is thrown up by the air under the action of the impeller, and the liquid flows back to the working chamber through the grid of the gas-liquid separation tube. The degree of vacuum achieves the effect of self-priming.
During the second operation, a one-way check valve is installed at the suction port of the pump. After that, it can be started without storing water.