DRB130A-01 dc peristaltic pump aging test

Do peristaltic pumps need back pressure?

Definition: Back pressure literally means the pressure at the back end. In a micro peristaltic pump, back pressure refers to the pressure in the opposite direction of the flow of the output fluid of the pump at the outlet or secondary side. This pressure is generally greater than the local atmospheric pressure and is caused by obstacles or sharp turns when the fluid flows along its path (such as a pipeline) in a closed container.

Principle: When a micro peristaltic pump drives the fluid through a filter, flow meter, valve or into a pressurized reaction vessel, due to the obstruction of these devices or components, a pressure in the opposite direction of the fluid flow will be generated, which is the back pressure.

Impact: Back pressure has an important impact on the performance of a micro peristaltic pump. If the back pressure is too large, it may cause the output flow of the pump to decrease, energy consumption to increase, and even cause overload damage to the pump. Therefore, when selecting and using a micro peristaltic pump, it is necessary to fully consider the back pressure in the system to ensure the performance and stability of the pump.

In what applications does a mini peristaltic pump require back pressure?

DC peristaltic pump may require back pressure in the following applications:

1. High-precision delivery: When the delivery volume or flow rate of the fluid needs to be precisely controlled, back pressure can help stabilize the fluid pressure and ensure the accuracy of delivery. For example, in applications such as drug delivery, laboratory analysis, and precision chemical reactions, micro peristaltic pumps may require back pressure to ensure stable fluid delivery.

2. Prevent backflow: In some applications, it is very important to prevent fluid from flowing back to the pump or system upstream. Back pressure can effectively prevent fluid backflow and protect the pump and system from damage or contamination. This is especially important when handling corrosive, toxic or high-value fluids.

3. Improve pump performance: In some cases, appropriate back pressure can improve the performance of micro peristaltic pumps. By increasing the resistance at the outlet, back pressure can help the pump deliver fluid more efficiently, especially in applications that handle high-viscosity fluids or require longer delivery distances.

Technical Specification

Does peristaltic water pump pulsate?

Micro peristaltic pump 12V may indeed produce pulsation during operation. This pulsation is mainly due to its working principle. Micro peristaltic pumps use rollers or pressure blocks to periodically squeeze the pump tube to push the fluid. This periodic squeezing and releasing process will cause discontinuity in fluid output, thus generating pulsation.

The degree of pulsation depends on many factors, including pump design, material and size of the pump tube, speed, and the properties of the fluid being transported. In some applications, pulsation may have an adverse effect on the system, such as reducing measurement accuracy and affecting the stability of chemical reactions.

In order to reduce the impact of pulsation, some measures can be taken, such as selecting the appropriate pump type and pump tube, optimizing the speed setting, and installing a pulsation damper. These measures can effectively reduce the pulsation amplitude and improve the performance and stability of micro peristaltic pumps.

Dimension Drawing

What does pulsation in a small dc peristaltic pump refer to?

In a micro dc peristaltic pump, pulsation refers to the periodic flow fluctuation or pressure change caused by the working mechanism of the pump during the pumping process. This pulsation is caused by the working principle of the peristaltic pump, which is specifically manifested as follows:

Periodic extrusion: The peristaltic pump pushes the fluid by periodically squeezing the pump tube through a roller or a pressure block. When the roller or pressure block squeezes the pump tube, the fluid is pushed forward; when the roller or pressure block is released, the pump tube returns to its original shape, producing a certain back-sucking effect. This periodic extrusion and release process causes the fluid output to be not continuous, but to present a fluctuating state.

Flow fluctuation: Due to the periodic extrusion of the peristaltic pump, the flow of the output fluid will fluctuate in each extrusion cycle. In the extrusion stage, the flow increases; in the release stage, the flow decreases. This flow fluctuation is pulsation.

Pressure change: Pulsation not only manifests itself as fluctuations in flow, but may also cause periodic changes in the pressure of the output fluid. In the extrusion stage, the pressure at the pump outlet will rise as the fluid is pushed forward; in the release stage, the pressure at the pump outlet will drop as the pump tube returns to its original shape.

DYX Different Peristaltic Pumps 

How to choose a dc electric peristaltic pump?

1. Clarify application requirements:

First, clarify the type of medium that the mini dc peristaltic pump needs to convey (such as liquid, gas or medium with special properties).

Determine the required flow range, pressure requirements, and whether precise control is required.

Consider whether corrosion resistance, high temperature resistance or other special properties are required.

2. Understand the performance parameters of the pump:

Study the performance parameters such as flow, pressure, noise and life of different models of micro peristaltic pumps.

Pay attention to the accuracy and stability of the pump, especially for applications that require precise metering.

3. Choose the right pump head and hose:

Choose the right pump head material and type according to the type of medium and delivery requirements.

Choose a hose with appropriate elasticity and durability to ensure long-term stable operation.