Diaphragm metering pump works

Diaphragm Metering Pump Working Principle: Diaphragm metering pump replaces the piston with a specially designed and processed flexible diaphragm to achieve reciprocating motion under the action of a drive mechanism to complete the suction-discharge process. Due to the isolation of the diaphragm, the structural isolation between the fluid being metered and the drive lubrication mechanism is truly achieved. High-tech structural design and selection of new materials have greatly increased diaphragm life, coupled with the excellent corrosion resistance of composite materials, diaphragm metering pumps have now become the main pump in fluid metering applications.

In the diaphragm metering pump family members, hydraulic driven diaphragm pump due to the use of oil evenly driven diaphragm, overcomes the mechanical direct drive pump diaphragm over-concentration shortcomings, to enhance the diaphragm life and maximum pressure. In order to overcome the possible malfunction caused by diaphragm breakage in single-diaphragm metering pump, some metering pumps are equipped with diaphragm breakage to achieve automatic interlock protection when the diaphragm ruptures. The measurement of the pump head with double-diaphragm structure further enhances its safety Suitable for applications that are particularly sensitive to safety. The motor drives the worm through the coupling and decelerates the spindle and the eccentric wheel through the worm wheel to make the rotary motion. The eccentric wheel drives the tappet to reciprocate in the guide drum.

Together with the diaphragm, the pump chamber is gradually evacuated by the action of a one-way valve, the suction valve is opened and liquid is sucked in. When the diaphragm moves forward, the suction valve is closed and the discharge valve is opened. Promote the discharge. In the pump by adjusting the stroke of a reciprocating work to form a continuous pressure, the amount of liquid discharge.

Understand the diaphragm metering pump working principle, we also know how to routine maintenance in daily use. Such as: regularly check the designated oil level inside the rotating box to avoid rust; after the pump is running for a certain period of time, should check the internal parts, the damaged parts for repair and replacement.