Small Micro DC Motor Electric Air Pump

Why does a Mini DC Pump suck in air?

The main purpose of a micro pump to suck in air is to create negative pressure inside the pump, so that gas can be sucked into the pump chamber and compressed under atmospheric pressure. This suction and compression process enables the micro pump to deliver gas to the desired location, meeting various miniaturization, portability, and efficient application requirements.

Micro pumps are widely used in gas sampling, gas circulation, vacuum adsorption, accelerated filtration and other fields. Micro pumps also play an important role in fields such as healthcare, scientific research, and environmental protection. For example, in the medical field, micro pumps can be used in equipment such as ventilators and hemodialysis to provide necessary gas supply and pressure control

What is the reason for the Micro DC Pump to suck in air?

The reason why a Small DC Pump sucks in air is related to its working principle and design. Micro pumps, such as micro suction pumps or micro vacuum pumps, drive the diaphragm inside the pump to move back and forth through the circular motion of the motor. This movement compresses and stretches the air inside the fixed volume pump chamber, creating a vacuum (negative pressure) at the pump suction port.

When there is a pressure difference between the negative pressure at the pump suction port and the external atmospheric pressure, the external atmospheric pressure will pressure (suck) the gas into the pump chamber. This process is the basic principle of a micro pump sucking in air. Once the gas enters the pump chamber, it is compressed and discharged through the exhaust port, completing a complete suction and discharge process.

The design of micro pumps usually gives them advantages such as small size, low noise, maintenance free, and long lifespan. In addition, since micro pumps do not require lubricating oil and vacuum pump oil, they will not contaminate the working medium. These characteristics make micro pumps widely used in gas sampling, gas circulation, vacuum adsorption, accelerated filtration and other fields, especially in medical, health, scientific research, environmental protection and other fields.

Dimension Drawing

How to solve the problem of suction air in micro pumps?

1. Check sealing: Ensure that all sealing components of the dc mini pump , such as pump cover, sealing gasket, O-ring, etc., are in good condition and not damaged. If the seal is found to be worn or aged, it should be replaced in a timely manner.

2. Check the suction pipeline: Ensure that there are no leaks or blockages in the suction pipeline. Leakage may cause air to enter the pump, while blockage may prevent the pump from inhaling enough liquid, allowing air to enter the pump.

3. Ensure that the suction pipeline is filled with liquid: Before starting the pump, ensure that the suction pipeline is filled with liquid to prevent air from entering the pump. This can be achieved by installing a liquid injection device above the suction pipeline.

4. Reduce pump speed: If the pump speed is too high, it may cause the pump to be unable to fully suck in the liquid and expel air. In this case, you can try reducing the pump speed to reduce the possibility of air entering the pump.

5. Use a degassing device: Install a degassing device at the outlet of the pump to help eliminate the air inside the pump. These devices usually include a degassing tank and a discharge valve, which can discharge the air inside the pump and prevent it from entering the pump.

Performance test

How to prevent vibration of micro diaphragm air pumps?

To prevent vibration of the Small Diaphragm Air Pump, the following measures can be taken:

1. Install spring isolator: Select a spring isolator suitable for the micro diaphragm air pump and ensure that the diameter of the spring is not less than 0.8 times the height under rated load. Springs need to have a certain amount of additional travel, and the horizontal stiffness should be at least twice the vertical stiffness to ensure the stability of shock absorption.

2. Installing rubber isolators: Choose an appropriate rubber isolator, which can be made of natural rubber or chloroprene rubber. For micro diaphragm air pumps, compressed rubber dampers can be considered. Rubber dampers can absorb and reduce vibration energy, thereby reducing the vibration of the Dc Air Pump .

3. Installation base: To meet strict vibration standards, a base can be considered for the micro diaphragm air pump and used together with a spring isolator. The base can effectively fix the air pump and reduce its vibration.

DYX Mini Pumps And Solenoid Valves Application

What is the vibration limit of a Mini Diaphragm Pump?

Micro diaphragm pump refers to a micro vacuum pump with one inlet and one outlet suction and exhaust nozzles, which are mechanically controlled inside the pump

The diaphragm of the part moves in a reciprocating motion, thereby continuously forming a vacuum or negative pressure at the inlet and a slight positive pressure at the exhaust nozzle. This

The pump is mainly used for gas transfer, and its working medium is mainly gas, with a compact volume.

However, regarding the specific values of the vibration limit of Micro Diaphragm Pumps, it involves issues of product design and performance specifications. Different manufacturers and models of micro Diaphragm Pumps may have different vibration limits. In addition, the vibration limit may also be influenced by various factors such as usage environment, working conditions, installation quality, etc.

Therefore, in order to obtain accurate information on the vibration limit of micro diaphragm pumps, it is recommended to directly consult relevant manufacturers or consult specific product manuals. These resources typically provide detailed performance parameters and technical specifications, including specific values or evaluation methods for vibration limits. This can ensure obtaining the most accurate and reliable information to meet specific application requirements.