Pipeline sewage pump

1、 Scope of application of pipeline sewage pump
The GW series pipeline sewage 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 water plants, 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.
2、 Service conditions for pipeline sewage pump
A、 The operating environment temperature of the pipeline sewage pump is ≤ 40 ℃, and the humidity is ≤ 95%; Altitude ≤ 1000 meters.
B、 The medium temperature shall not exceed 60 ℃, and the medium density shall be 1-1.3kg/dm3.
C、 The range of use for cast iron material is from pH 5 to 9.
D、 Stainless steel material can be used with general corrosive media.
E、 The altitude of the usage environment should not exceed 1000 meters. If it exceeds the above conditions, it should be mentioned when placing an order to provide you with more reliable products.
Note: If the user has special requirements for temperature, medium, etc., please specify the detailed information of the conveying medium when ordering, so that our unit can provide more reliable products.
3、 Characteristics of pipeline sewage pump products
1. The pump and motor are directly connected and coaxial, belonging to the electromechanical integration product, with a compact structure and stable performance.
2. The design of anti clogging hydraulic components for large flow channels greatly improves the ability of pollutants to pass through, effectively passing through 5 times the fiber material of the pump diameter and solid particles with a diameter of about 50% of the pump diameter.
3. Reasonable design, reasonable matching motor, high efficiency, low noise, and significant energy-saving effect.
4. The mechanical seal adopts hard and wear-resistant tungsten carbide, which has the characteristics of durability and wear resistance, and can ensure the safe and continuous operation of the pump for more than 8000 hours.
5. The pump is a vertical structure, with the inlet and outlet centerlines on the same horizontal line, and the inlet and outlet flange specifications are the same, making installation and disassembly very convenient.
6. Small footprint, no need to build a computer room, can save a lot of infrastructure costs; By adding protective covers to the fan blades of the motor, the entire machine can be operated outdoors.
4、 Installation and use of pipeline sewage pump:
Firstly, check if the external fasteners have become loose during transportation.
2. Check if the power supply voltage meets the requirements of the motor nameplate.
3. Connect the power and try to turn it on to see if the impeller rotates in the direction indicated on the pump. If the direction is reversed, simply swap any two-phase wires in the cable. During the test run, the time should not be too long to avoid burning out the seal.
4. Install the pump and start it up for operation. It is best to install the pump foot screws.
5、 Inspection and maintenance of pipeline sewage pump:
1. Before using the pump, the insulation resistance of the motor winding to the casing should be checked. If it is lower than 0.5 megaohms, the stator must be dried and the insulation resistance should be increased before use.
If the gap between the impeller and the oil seal at the inlet of the pump body exceeds 2mm, the wear-resistant oil seal should be replaced.
When there is water leakage in the pump seal, the seal should be replaced in a timely manner. When replacing, the static seal should be installed flat and solid first, and then the dynamic seal should be sealed on the shaft.
4. When replacing the impeller, use a puller to pull it out, and do not use a hammer to strike forcefully to avoid damaging the shaft alignment.

Common causes of malfunctions
1. No water output, heavy and high particle size of the liquid being pumped; Blockage of liquid flow channel; Wrong impeller direction; The rod material is sucked into the impeller and gets stuck; The height of the pipeline outlet exceeds the rated head height.
2. Insufficient flow and low head. Low voltage, wrong impeller direction, or worn wear-resistant seal; The heavy particle size of the liquid is too high.
3. Low insulation resistance, humid surrounding environment, and severe mechanical seal leakage.