Disassembly and installation steps of multi-stage pump in water conservancy industry

Category: Water pump knowledge

2024-07-11

Water industry multistage pumpThe disassembly and installation steps are an important part of ensuring the normal operation and maintenance of the equipment. The repair and maintenance of multi-stage pumps in the water conservancy industry involve many aspects, including daily maintenance, regular inspection, and treatment measures under specific circumstances. The steps of this process are described in detail below.

1. removal steps

1. Preparation: Turn off the source power of the pump, ensure the safety of the work area, and prepare necessary tools, such as wrenches, screwdrivers, etc. Keep the equipment clean, dry, free of oil and leakage.

2. Remove the outlet and inlet pipes: Loosen the fixing bolts and remove the pipes from the pump.

3. Remove the pump head: Use a wrench and other tools to separate the pump head from the pump body.

4. Remove the bearing and bearing box: remove the bearing nuts one by one, gently tap the bearing to loosen it, and then remove the bearing and bearing box.

5. Disassemble the mechanical seal: According to the type of mechanical seal, follow the corresponding disassembly method.

6. Take out the rotor components: including impeller, shaft and other components.

7. Cleaning and inspection: Clean all the disassembled parts and check for damage or wear. Check whether the oil level in the suspension oil chamber of the centrifugal pump is appropriate, and it must be kept at 1/3 and 2/3 of the oil mark.

2. installation steps

1. Foundation preparation: ensure that the foundation of the pump is stable and ready to install the required pipes, bolts, sealing materials, etc.

2. Install the pump body: fix the pump body on the foundation.

3. Install the bearing and bearing box: Install the bearing and bearing box on the pump body and make sure that they are in the correct position. The bearing temperature should be checked frequently, and the maximum temperature generally cannot exceed 70 ℃ ~ 75 ℃.

4. Install the rotor components: install the impeller, shaft and other components on the shaft.

5. Install the mechanical seal: Install according to the selected mechanical seal type and ensure that its sealing performance is good.

6. Install the pump head: connect the pump head to the pump body and ensure that it is firmly fixed.

7. Connect the inlet and outlet pipes: Connect the pipes to the pump and fix the bolts.

8. Commissioning and testing: After the installation is completed, debug and test to ensure that the pump can operate normally. In actual use, control the flow and head of the multi-stage pump to ensure that it runs within the scope indicated on the sign to achieve the best energy saving effect.

9. Maintenance: Regularly check the operation of the pump and carry out necessary maintenance and maintenance. When the centrifugal pump runs for about 2000h, periodic inspection should be carried out to repair or replace damaged parts so that the pump is often in good condition. Once an abnormal sound is found, it should be stopped immediately for inspection, find out the cause and solve it in time.

Note:

1. In the process of operation, to ensure the safety of staff, to avoid injury.

2. During disassembly and installation, pay attention to protect all parts of the pump to avoid damage. Always check whether the support mechanism of the centrifugal pump inlet and outlet water pipeline system (pipe fittings, valves) is loose, and ensure that the support mechanism is firm and the pump body does not bear the support force.

3. When disassembling and installing, follow the equipment's instruction manual and related standards to ensure the correctness of the operation.

4. After the installation is completed, debug and test to ensure that the pump can operate normally, and check for leaks or other problems.

5. When the centrifugal pump is not used for a long time, the water pump should be disassembled, antirust treatment should be done, reinstalled, and properly stored for the next use.

6. Multi-stage pumps need to be maintained and overhauled after long-term use, including preparation before maintenance, maintenance methods, and maintenance contents. Check the pipes and joints of the multi-stage pump to ensure that there is no looseness, and try to turn the pump body manually to verify its flexibility.

7. When using the multi-stage pump in the cold winter season, it is necessary to put the medium in the lower part of the pump body after stopping to prevent freezing and cracking.

Following the above steps can ensure the smooth disassembly and installation of multi-stage pumps in the water conservancy industry, and ensure the normal operation and maintenance of the equipment.

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