ZW type unobstructed sewage discharge self-priming pump

The ZW type non clogging sewage discharge self-priming pump is a structurally novel product successfully developed based on repeated research on similar product technologies at home and abroad. The pump integrates self-priming and non clogging discharge, adopts axial reflux form, and passes through the pump body The unique design of the impeller flow channel allows for the suction and discharge of large solid particles and long fiber impurities without the need for a bottom valve or inlet water like a typical self-priming water pump. Widely used in municipal sewage engineering, river pond manure treatment, sedimentation of waste minerals and impurities, as well as impurity pumps for chemical media such as light industry, papermaking, food, chemical industry, pharmaceuticals, electricity, paddles and mixtures.

Compared with similar domestic products, the ZW type self-priming sewage pump has the characteristics of simple structure, good self-priming performance (self-priming height can reach 5m), strong sewage discharge capacity, high efficiency and energy saving, and easy maintenance (completely replacing WQ and QW submersible sewage pumps). Among the self-priming pump series products, the ZW type self-priming sewage pump is the first of its kind in China. All indicators are leading domestically and have reached the international advanced level. Has broad prospects for application market development.

ZW type unobstructed sewage discharge self-priming pump usage conditions and model significance:

1. Environmental temperature ≤ 50 ℃, medium temperature ≤ 80 ℃, special requirements can reach 200 ℃

2. The pH value of the medium is 6-9 grade for cast iron and 2-13 grade for stainless steel.

3. The medium density shall not exceed 1240 kg/m3

4. The self-priming height of ZW type self-priming sewage pump cannot exceed the specified value of 4.5-5.5 meters, and the length of the suction pipe is ≤ 10 meters.

5. The ZW self-priming sewage pump has a capacity to suspend particles with a diameter of 60% of the pump diameter and a fiber length of 5 times the pump diameter.

ZW type unobstructed sewage discharge self-priming pumpStructure diagram and working principle:

1. Inlet connection, 2. Inlet flange, 3. Inlet valve seat, 4. Water valve, 5. Outlet connection, 6. Pump body, 7. Gas liquid separation pipe, 8. Rear cover, 9. Impeller, 10. Mechanical seal, 11. Water stop ring, 12. Bearing seat, 13. Pump shaft, 14. Bearing cover, 15. Bottom cover plate, 16. Bolt.

ZW type unobstructed sewage self-priming pump mainly consists of pump body, impeller, back cover, mechanical seal, pump shaft, bearing seat, inlet valve, gas-liquid separation pipe, water inlet valve, inlet and outlet pipes, etc. The structure of the pump is shown in the diagram.

The working principle of ZW type sewage self-priming pump: There is a liquid storage chamber in the pump body, which is connected to the pump working chamber through the upper reflux hole and the lower circulation hole, forming an axial flow external mixing system of the pump. After the pump stops working, there is already a certain volume of liquid stored in the pump chamber. When the pump is started, the liquid stored in the relevant authorities is ejected 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 tube, and the gas is discharged outside the pump, creating a certain degree of vacuum inside the pump and achieving self-priming.

Product Features:

1. The ZW type self-priming sewage pump adopts a double blade impeller structure, greatly improving the ability of pollutants to pass through

2. The ZW type self-priming sewage pump mechanical seal adopts a new type of friction pair and operates in the oil chamber for a long time;

3. The overall structure is compact, the volume is small, the noise is low, and the energy-saving effect is significant. It is easy to maintain and convenient for users to replace;

4. The automatic control cabinet can automatically control the pump's over movement and stop according to the required liquefaction changes, without the need for dedicated personnel to supervise, making it extremely convenient to use;

5. Installation methods can be provided according to user needs, which greatly facilitates installation and maintenance. People do not need to enter the sewage pit for this purpose;

6. Can be used within the design scope while ensuring that the motor does not overload;

7. The ZW type self-priming sewage pump, when equipped with an outdoor motor, does not require the construction of a pump room and can be directly installed and used outdoors to save costs.

ZW type unobstructed sewage discharge self-priming pump product usage:

ZW type sewage self-priming pump is suitable for the discharge of severely polluted wastewater in factories and commercial areas, sewage discharge stations in main residential areas, water distribution systems in urban sewage treatment plants, drainage stations in civil air defense systems, water supply equipment in waterworks, sewage discharge in hospitals and hotels, municipal engineering construction sites, mining supporting machines, rural biogas digesters, farmland irrigation and other industries. It can also be used to transport granular sewage and pollutants, as well as clean water and weakly corrosive media.

Use of sewage self-priming pump:

1. Before use, check whether the rotation direction of the pump is correct and whether it rotates flexibly.

2. Unscrew the filling plug above the pump body, fill the reservoir, and then tighten the plug. In the future, there will be no need to refill the reservoir when starting up. The pump should not be started and operated when there is insufficient liquid storage, otherwise the pump cannot work properly and the mechanical seal may be damaged.

3. When starting up, the outlet flow control valve should be opened first to facilitate the discharge of gas during the self-priming process. After starting, adjust the opening of the outlet flow control valve to ensure that the pressure gauge reading is within the specified range (various pump type pressure control range tables), avoiding the pump from working within the lower limit of the specified range, to prevent motor overload and burnout caused by excessive shaft power or cavitation caused by excessive flow, affecting the normal operation of the pump and causing strong vibration and noise.

4. During operation, the temperature rise of the pump and motor should be checked regularly. If noise or other abnormal sounds are found, the machine should be stopped for inspection and troubleshooting before resuming operation.

5. When shutting down, the outlet flow control valve should be closed first before shutting down to avoid insufficient liquid storage in the pump due to siphon effect.

6. Regularly refuel and maintain the pump. If it is not used for a long time, the pump should be disassembled, cleaned, and oiled, and stored properly.

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