Diaphragm metering pump
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1. Our diaphragm pump originally had quite a lot of vibration; we’ve added a buffer tank, but the vibration is still significant. Is there any solution? Additionally, how should the check valve used in conjunction with a diaphragm pump be selected? Should the check valve be installed closer to the pump or closer to the equipment? What are the specific requirements for the installation location of check valves?
Domestic diaphragm metering pumps with high flow rates generally experience quite significant vibration. The common approach is to reinforce the inlet and outlet pipes, using soft pine wood combined with steel sections for secure fixation. As for the type of check valve, it can be selected based on the installation method and the medium flowing through it; the location is primarily determined by the operational requirements.
1. Is the diaphragm pump motor shaft out of alignment? 1. Adjust to align the pump and motor shafts. 2. Is the pump shaft bent? 2. Remove and straighten or replace it. 3. Is the impeller unbalanced? 3. Remove it to find balance
If the air is not completely removed from the diaphragm pump, it will vibrate heavily. The check valve for transporting liquids must be installed vertically.
Installation requirements: 1. The pump should be installed on a dedicated concrete or cast-iron platform; after alignment, it should be secured using anchor bolts. The pump should be placed as close as possible to the liquid source to facilitate operation, and there should be sufficient space around the pump. 2. The inlet liquid level should be as high as possible, not lower than the center height of the pump. 3. The diameters of the suction and discharge pipes should be no smaller than those of the pump’s inlet and outlet. The suction pipeline should be kept as short as possible; if a longer pipeline is necessary, its diameter should be increased. The joint parts of each pipeline must be properly sealed, with no leakage allowed. 4. The inlet pipe connected to the storage tank should have its connection point 20 cm above the bottom of the tank, to prevent sediment from entering the pump. 5. Pipes directly connected to the pump must be installed on brackets. 6. Both the intake and exhaust pipes should avoid sharp turns, with as few bends, joints, or other components that increase pipeline resistance as possible. 7. The outlet connection piping should be equipped with measuring instruments, such as pressure gauges. 8. A filtering device must be installed in the pipeline from the storage tank to the suction line, and newly installed pipelines must be thoroughly cleaned. 9. It is recommended that the discharge pipeline be equipped with a safety valve or overflow valve to ensure that the discharge pressure of the pump does not exceed its rated value. 10. In applications where strict control over the amplitude of hydraulic fluctuations within the system is required, a pressure stabilizing device can be installed near the discharge pipe. 11. Electrical control equipment should be installed as close as possible to the pump’s operating point, depending on its usage conditions. Control switches appropriate for the medium being transported should be provided to ensure the safety of the equipment. 12. When the pump is used in environments containing corrosive gases, appropriate protective measures should be taken. There is a knocking sound inside the pump. 1. The moving parts are severely worn out. 1. Adjust or replace the parts. 2. The valve lift is too high. 2. Adjust the lift height to prevent valve lag. 3. The negative pressure in the inlet liquid tank is too high. 3. Reduce the negative pressure
It’s still better to import; the domestic quality is really poor·
We’re using ones produced by Chongqing Pump Factory; I’m not sure how they are Are there any other factories that use diaphragm metering pumps produced by this factory?