The self-priming pump adopts the axial backflow and external mixing type, and through the unique design of the pump body and impeller flow channel, it can not install the bottom valve and irrigation and diversion like the general clean water self-priming pump, and it can also absorb and discharge large solid particles. And long-fiber impurity liquid can be widely used in municipal sewage projects, river pond breeding, light industry, papermaking, textile, food, chemical industry, electrical industry, fiber, slurry and mixed suspension, and other chemical media ideal impurity pump. Compared with similar domestic products, the self-priming pump has a simple structure, good self-priming performance, strong sewage discharge capacity, high efficiency and energy saving, convenient use, and maintenance, and is the first domestic sewage pump series product. Various technical performance indicators are leading in the country and have reached the international advanced level, and have a broad application market and development prospects.
Working principle of self-priming pump: There is a liquid storage chamber in the pump body, which communicates with the working chamber of the pump through the upper return hole and the lower circulation hole, forming an axial return and external mixing system of the pump. After the pump stops working, a certain volume of liquid has been stored in the inner cavity of the pump. When the pump is started, the liquid stored in the pump is discharged upwards with air under the action of the impeller. The liquid flows back 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 degree of vacuum is formed in the pump to achieve the function of self-priming.
Self-priming pump product features
1. Strong flow capacity: the special anti-blocking design of the impeller ensures high efficiency and no blockage of the pump;
2. High efficiency and energy saving: using an excellent hydraulic model, the efficiency is 3-5% higher than that of ordinary self-priming pumps;
3. Good self-priming performance: the self-priming height is 1 meter higher than that of ordinary self-priming pumps, and the self-priming time is shorter than ordinary self-priming pumps.
Preparation and inspection work before starting the self-priming pump:
1. Check whether the fasteners in the pump base, coupling, bearing seat, and other connecting parts are loose? If it is loose, it should be tightened.
2. Is there any jamming or abnormal sound when turning the coupling by hand?
3. Open the water filling valve above the pump. Add liquid storage water not less than two-thirds of the volume of the pump body, and close the valve. There is no need to refill water when starting up in the future
4. Connect the power supply and try to turn it. Seen from the motor side, it turns clockwise. (Reverse is strictly prohibited)
5. Turn on the machine and observe whether the pump is running normally? If there is an abnormal phenomenon, find out the reason and eliminate it.
Self-priming water pump is suitable for industries such as the chemical industry, petroleum, pharmaceutical, mining, papermaking, fiber, pulp, textile, food, power plant and municipal sewage engineering, public facility sewage, river pond breeding, etc.