Multi-stage pump is a common industrial equipment, widely used in industrial and agricultural production and urban water supply system. The correct installation and use method is very important to ensure the performance of the pump and extend the service life. The following isHunan Sanchang Pump Co., Ltd.Several key points of installation and use of multistage pumps are introduced.

1. Before installing the multi-stage pump, you need to read and understand the product manual carefully. The product manual contains important information such as installation procedures, operating requirements, and safety precautions. During the installation process, the operation should be carried out in strict accordance with the requirements of the manual to ensure that every link is correct.

2, choose the right installation location is also very important. Multi-stage pumps usually need to be installed in a dry, well-ventilated place to ensure the normal operation and heat dissipation of the pump. At the same time, try to avoid installing the pump in places with vibration and noise, so as not to affect the surrounding environment and reduce the working efficiency of the pump.

3, the correct connection of the inlet and outlet pipeline is also not negligible. When connecting the pipeline, ensure that the inlet and outlet of the pipeline and the pump are firmly connected and sealed reliably. In particular, it should be noted that the pipeline should be avoided to appear too long or too thin, so as not to affect the use of the pump.

Multi-stage pumps also need regular inspection and maintenance during use. Regular inspections can find problems and repair them in time to avoid malfunctions. Common inspection items include the operation of the pump, bearing temperature, motor running state, etc. At the same time, the lubrication and cooling system of the multi-stage pump also needs regular inspection and maintenance to ensure its normal operation.

1. installation

1. When the motor and the water pump are installed in combination, the axial direction of the pump coupling end should be pulled out, and the end clearance value of 3-5mm should be left to ensure the axial clearance value between the two couplings of the pump and the motor.

The center line of the pump and the motor shaft should be on the same horizontal line.

3, the pump can only bear its own internal force, can not bear any external force.

2. start, run and stop

1. Starting:

① Before starting the pump, the rotor should be turned to check whether the rotor is flexible.

② Check whether the motor steering is consistent with the pump steering.

Close the pump outlet gate valve, pressure gauge cock, with the delivery of liquid or vacuum system to exclude the suction pipe and the air in the pump (it is strictly prohibited to start running empty car).

Check the tightness of the connecting bolts between the pump and the motor and the safety conditions around the pump, so that the pump is ready to start.

⑤ Start the pump. After the pump is running normally, open the pressure gauge cock, slowly open the outlet gate valve, and control the pump's given lift according to the outlet pressure gauge reading.

2. Operation:

① This type of pump is balanced by the internal balance mechanism to balance the axial force. The balance device has a balance liquid outflow, and the balance liquid is connected to the suction section by the balance water pipe.

The rolling bearing of this type of pump has a cooling device, and the cooling water pipe must be connected before the water pump runs. The change of bearing temperature rise reflects the assembly quality of the pump. The bearing temperature rise shall not be higher than the ambient temperature of 35 ℃, and the maximum temperature shall not be higher than 75 ℃.

The rotor of this type of pump has certain axial movement during operation, and the clearance value between the end faces of the two couplings of the motor and the water pump should be guaranteed.

The pump should be regularly checked during the operation of the impeller, seal ring, guide vane sleeve, balance disc, sleeve wear, wear is too large should be replaced in a timely manner.

The user should be based on the specific circumstances of a more detailed operating procedures.

3. parking:

Before stopping, the pressure gauge cock should be closed first, and then the outlet gate valve should be closed slowly. The motor can not be stopped until the outlet gate valve is closed.

The correct installation and use of the multi-stage pump can ensure the performance and service life of the pump, while reducing the occurrence of failures. Before installation, you should carefully read the product manual, select the appropriate installation location, and correctly connect the inlet and outlet pipelines. During use, Regular inspection and maintenance are also essential. Only by doing these tasks can the multi-stage pump be fully utilized and work efficiency can be improved.