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The low pressure of the micro air pump may be caused by damage to the following components:
- Piston parts (for piston type micro-air pump)
– Piston wear : The piston moves in the cylinder for a long time and constantly fricts with the cylinder wall. If the piston surface is worn, the clearance between the piston and the cylinder wall will increase. When the air pump is working, part of the gas will leak through this gap and cannot be compressed effectively, thus reducing the output pressure. For example, in the frequently used industrial piston miniature air pump, the wear of the piston may be more obvious after a long period of operation.
– Piston ring damage : The main function of the piston ring is to seal and prevent gas leakage in the cylinder. If the piston ring breaks, wears or loses elasticity, it cannot seal the gas effectively. In this way, during the compression process, gas will leak from the gap between the piston ring and the cylinder wall, resulting in insufficient pressure. Like a poorly sealed container, it cannot maintain a high internal pressure.
- Impeller parts (for rotary miniature air pump)
– Impeller wear or deformation : In the process of high-speed rotation of the impeller, the clearance between the blade and the pump housing is very small. If the blade of the impeller is worn, or the impeller is deformed due to external force impact and other reasons, it will affect the normal compression and transportation of gas. The worn or deformed impeller can not effectively throw the gas to the edge of the pump shell for compression, so that the pressure output of the air pump decreases. For example, when a miniature air pump inhales gas containing solid particles, these particles may strike the impeller, causing it to wear.
– The connection between the impeller and the shaft is loose : The impeller is driven by the shaft to rotate. If the connection between the impeller and the shaft is loose, for example, the key of the key connection is worn or the setting screw is loose, the impeller will not work stably when rotating. This will cause the impeller’s rotation efficiency to be reduced, and it will not be able to properly compress the gas, resulting in insufficient pressure.
- Diaphragm parts (for film type micro-air pump)
– Diaphragm rupture or perforation : The diaphragm is a key component of the membrane air pump, through its up and down movement to achieve suction and exhaust. If the diaphragm is ruptured or perforated, during compression, the gas will leak from the damage instead of being effectively expelled, resulting in insufficient air pump pressure. This may be due to aging of the diaphragm material, damage by sharp objects, or overstretching.
– Improper diaphragm installation : If the diaphragm is not properly installed during installation, such as a lax seal or inaccurate installation position, it can also lead to gas leakage. For example, the sealing gasket at the edge of the diaphragm is not properly installed, allowing gas to leak from the joint of the diaphragm and the pump body, reducing the pressure output of the air pump.
- Seals (various types of micro air pumps)
– Aging or damage of the seal ring : There are many places in the air pump that need to use the seal ring to prevent gas leakage, such as the joint of the pump body, the connection of the air inlet and outlet and the pipeline. If the seal rings age, harden, crack or lose elasticity after a long time of use, gas will leak from these sealing parts, resulting in pressure that cannot reach normal levels. For example, for a miniature air pump used in a high temperature environment, the sealing ring may accelerate aging due to high temperature.
– Sealant failure : Some air pumps may use sealant to seal gaps between components. If the sealant ages, falls off or is not evenly applied, there will also be gas leakage problems, which will affect the pressure of the air pump.
- Valve parts (various types of micro air pumps)
– Intake valve and exhaust valve damaged : The normal opening and closing of the intake valve and exhaust valve is essential for the work of the air pump. If the valve core is worn, the spring fails, or is caught by a foreign object, the valve will not open and close properly. For example, if the exhaust valve cannot be fully opened, the gas discharged from the air pump will be blocked, resulting in the internal pressure cannot rise normally; The inlet valve cannot be completely closed, which will allow the gas to leak during the compression process and also cause insufficient pressure.
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