DQB380-FB vacuum pump aging test

DQB380-FB vacuum pump aging test

2 year ago

19 0

Shenzhen DYX Technology Co.,Limited

 3 year year

Product details

What is the difference between a suction pump and a electric vacuum pump?

There are some significant differences in function, application and working principle between micro suction pumps and micro vacuum pumps.

First of all, micro suction pumps mainly use pressure differences to transport liquids. Its basic structure includes liquid inlet, liquid outlet, rotor and shell. Through the rotational motion of the rotor, the micro suction pump pumps the liquid

It is sucked in from a low-pressure place, generates pressure inside the pump through the action of centrifugal force, and finally flows out from a high-pressure place. This makes it highly efficient when handling low viscosity fluids or liquids. Micro suction pumps are usually used in liquid transportation, circulation, and pressurization scenarios.

The mini vacuum pump is mainly used to generate vacuum and is a small device used for gas suction. Its working principle is mainly to use the circular motion of the motor to cause the mechanical device inside the pump to compress and stretch the air in the fixed volume pump chamber, thereby forming a vacuum (negative pressure). There is a pressure difference between the pump suction port and the external atmospheric pressure, which pressurizes (sucks) the gas into the pump chamber and then discharges it from the exhaust port. Since the air extraction port or exhaust port can form a pressure difference with the outside atmosphere, micro vacuum pumps are widely used in gas sampling, gas circulation, vacuum adsorption, accelerated filtration and other occasions, especially in medical, health, scientific research, environmental protection and other fields. application.

What grades of miniature diaphragm vacuum pumps are there?

There are multiple levels of micro diaphragm vacuum pumps, mainly including primary, secondary, tertiary and quaternary.

The vacuum degree of a primary membrane vacuum pump is usually between 60 and 120 mbar, which is suitable for occasions such as laboratory filtration that require a lower vacuum degree. Its vacuum degree is affected by the vibration frequency of the diaphragm, the reaction speed of the airflow check valve and the sealing degree of the system. The suction volume can be increased by connecting multiple pump heads in parallel, and multi-stage compression can be achieved by connecting pump heads in series to improve the vacuum degree.

The vacuum degree of a secondary diaphragm vacuum pump is usually between 4 and 20 mbar, which is often used in laboratory vacuum distillation and other processes that require a medium vacuum degree, especially when used with a rotary evaporator.

The vacuum degree of a three-stage diaphragm vacuum pump is further improved to 2~5 mbar, which is suitable for processes with higher requirements for vacuum degree.

The vacuum degree of a four-stage diaphragm vacuum pump usually reaches 0.5~2 mbar, which is also the limit vacuum degree of this type of vacuum pump.

Technical Specification

Model	DQB380-FB-3	Voltage	dc3.7v
Current	450mA	Flow	2lpm
Max vacuum pressure	-450mmHg	Media	Air
Life cycle	95000 cycles	Noise	Smaller than 60dB

What liquid is in a mini electric vacuum pump?

Micro diaphragm vacuum pumps usually do not contain liquid inside. It is a device that uses a mechanical device to make the diaphragm inside the pump reciprocate, thereby forming a vacuum or negative pressure at the inlet, sucking gas into the pump chamber, and then exhausting it from the exhaust port. Micro diaphragm vacuum pumps are mainly used for gas suction and vacuum generation, so under normal working conditions, they do not contain liquid inside.

However, it is worth noting that micro diaphragm vacuum pumps can be used in some special occasions, such as those that require the extraction or handling of liquids. In these cases, the pump may come into contact with liquid, but the liquid is usually not present in the internal structure of the pump. The design of the micro diaphragm vacuum pump enables it to handle gases containing water vapor, but it does not mean that it will be filled with liquid inside.

Dimension Drawing

What happens if water gets into a micro electric vacuum pump?

When water enters the small electric vacuum pump, a series of adverse consequences will occur due to the incompatibility of water and the working medium (such as oil) in the pump. Specifically, the following situations may occur:

1. Affecting the sealing: Water entering the pump will destroy the original sealing environment, resulting in a decrease in the sealing performance inside the pump.

2. Reducing the pumping efficiency: The presence of water will interfere with the normal operation of the pump, reduce its pumping efficiency, and reduce the performance of the pump.

3. Damaging parts: If water comes into contact with the motor, bearings and other parts inside the pump, these parts may rust or be damaged, thereby affecting the overall life of the pump.

4. Causing electrical failure: If water enters the electrical part of the pump, it may also cause electrical failures such as short circuits, and may even cause safety hazards.

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How to prevent water from entering the dc electric vacuum pump?

1. Regular inspection and maintenance: Check the mini electric vacuum pump regularly to ensure that the pump body, pipelines and connectors are intact and the connections are tight. At the same time, replace aging connectors and water pipes in time to avoid water entering the pump due to leakage.

2. Pay attention to the use environment: Avoid using the micro diaphragm vacuum pump in a humid environment, especially in rainy seasons or places with high humidity, and take corresponding moisture-proof measures.

3. Add protective measures: Installing a water-gas separator at the air inlet of the pump can effectively prevent moisture and gas from entering the pump together. In addition, you can also consider setting a waterproof cover or waterproof baffle on the outside of the pump to block the intrusion of external moisture.

4. Correct installation and use: When installing the micro diaphragm vacuum pump, make sure the pump body is in a horizontal position to avoid water flowing into the pump due to improper installation. At the same time, during use, follow the operating procedures to avoid water entering the pump due to operating errors.