A metering pump is a device used to deliver precise flow, widely used in industrial fields and laboratories. The damper is one of the important components and plays a crucial role in the operation of the pump. Below, I will provide you with a detailed introduction to the function and principle of dampers. Dampers play an important role in metering pumps, as they can control and stabilize the flow rate of liquids. It has the following functions: stable output flow, by slowing down the working speed of the pump, the fluid is pumped out in a more stable way, ensuring the stability of flow output; Reduce pulsation, effectively reduce or eliminate periodic changes in output flow, and improve the accuracy and stability of flow; Adjust the flow range, change the parameters of the damper as needed or select different dampers to achieve the operation of the pump in different flow ranges. These functions make dampers widely applicable in metering pump systems, improving pump performance and adaptability.
The principle of dampers is based on the interaction between fluid dynamics and mechanical motion. Common metering pump dampers typically use piston or diaphragm structures.
The piston damper consists of a piston, damping fluid, and regulating device. The liquid achieves flow regulation and stability through the movement of the piston and the control of the damping device. During operation, liquid flows into the piston chamber from the pump inlet, and the piston then begins to move. The control device of the damper adjusts the flow rate and pressure of the damping liquid to control the movement speed and position of the piston, thereby achieving flow regulation and stable output.
A diaphragm damper is a device consisting of two chambers that are isolated from each other by a flexible diaphragm. Its principle is to achieve fluid transport and damping effect by transferring liquid from one chamber to another. During the working process, the inflow and outflow of liquid cause vibration and deformation of the diaphragm, thereby achieving liquid pumping and flow regulation. This vibration can be controlled by springs or gas pressure to stabilize the output flow rate. Meanwhile, the resistance generated during the vibration process of the diaphragm can be adjusted by damping liquid. The viscosity and resistance characteristics of damping liquid affect the speed and amplitude of diaphragm vibration, thereby achieving smooth flow regulation and reducing pulsation. Commonly used damping liquids include high viscosity liquids such as liquid silicone or special damping oils. In general, dampers in metering pumps achieve stable flow output and reduce pulsation by controlling the movement speed of the piston or diaphragm and the resistance of the damping liquid. The design and adjustment parameters of dampers can be optimized according to specific application requirements to meet the operation of metering pumps with different flow ranges and accuracy requirements.
