The working principle of rotary vane vacuum pump, the principle and structure of rotary vane vacuum

Working principle of rotary vane vacuum pump:

The rotary vane vacuum pump is mainly composed of a pump body, a rotor, a rotary vane, an end cover, a spring, etc. A rotor is eccentrically mounted in the cavity of the rotary vane vacuum pump, the outer circle of the rotor is tangent to the inner surface of the pump chamber (there is a small gap between the two), and two rotary vanes with springs are installed in the rotor groove. When rotating, by centrifugation.

The force and the tension of the spring keep the tip of the rotary vane in contact with the inner wall of the pump chamber, and the rotor rotation drives the rotary vane to slide along the inner wall of the rotary vane vacuum pump chamber. Two.

The rotary vane separates the crescent-shaped space enclosed by the rotor, the pump chamber and the two end caps into three parts: A, B and C.

The space where the inhalation ports are connected

The volume is gradually increasing and is in the process of inhalation. On the other hand, the volume of space C communicating with the exhaust port is gradually decreasing.

is in the process of exhausting. The volume of the centered space B is also gradually decreasing and is in the process of compression. Since the volume of space a is gradual.

As it increases (i.e. expands), the gas pressure decreases, and the pressure of the external gas at the inlet of the rotary vane vacuum pump is stronger than the pressure in space a, so the gas is sucked in.

Enter. When space A is isolated from the suction port, that is, it is transferred to the position of space B, and the gas begins to be compressed, the volume gradually decreases, and finally it phases with the exhaust port.

Open. When the compressed gas exceeds the exhaust pressure, the exhaust valve is pushed open by the compressed gas, and the gas is discharged into the atmosphere through the oil layer in the tank. by spinning.

The continuous operation of the vacuum pump achieves the purpose of continuous pumping. If the discharged gas passes through the airway and is transferred to another stage (low vacuum stage), by.

The low-vacuum stage is pumped out, and then the low-vacuum stage is compressed and discharged into the atmosphere, which constitutes a two-stage rotary vane vacuum pump. In this case, the total compression ratio is made up of two stages.

burden, thus increasing the ultimate vacuum, the above information provided by horsepower electromechanical hope to help you.

Rotary vane vacuum pump is a common mechanical vacuum pump, its principle and structure are as follows:

Principle: The impeller is used to rotate at high speed in the shell to generate centrifugal force, so as to discharge the gas out of the pump body and achieve the purpose of vacuuming.

Structure: The rotary vane vacuum pump is mainly composed of a pump body, a rotating impeller, a fixed impeller and a rotating shaft. Inside the pump body is an oval chamber, and the rotating and fixed impellers are mounted on the shaft, which rotate at high speed by gear transmission.

While the impeller rotates at high speeds, the gas is drawn in from the air intake and then squeezed, compressed, and pushed out of the pump body between the rotating and fixed impellers. The final gas is discharged to the outlet of the pump body.

Rotary vane vacuum pumps are simple in structure and reliable in use, so they are widely used in laboratories, industrial production and other fields.

Rotary vane vacuum pump is a kind of mechanical vacuum pump, its characteristics and working principle are as follows:

Features: Rotary vane vacuum pump has simple structure, reliable performance and low maintenance cost.

The pumping speed is high, which can reach the range of 500-1000L S.

It has a wide range of applications and can be used in various working conditions such as low vacuum, medium vacuum and high vacuum.

Working principle: The main component of the rotary vane vacuum pump is a centrifugal pump composed of rotating vanes and fixed vanes, and the centrifugal force generated by rotating in the pump body can pump the gas out of the pump body to form a vacuum.

The gas forms a pressure difference inside the pump body and flows from the high-pressure area to the low-pressure area.

On inhalation, the rotating vanes rotate rapidly inside the pump body, creating a rotating cavity in which the gas is squeezed and compressed, creating a vacuum.

During exhaust, the gas flows out of the gap between the rotating vanes and the pump body, creating a vacuum.

To sum up, rotary vane vacuum pumps have the advantages of simple structure, fast pumping speed and low maintenance cost, and are widely used in various fields.

Hello dear, rotary vane vacuum pump is a common vacuum pump, which is mainly used for vacuum treatment and vacuum pumping in manufacturing, biomedicine, optoelectronics and other fields. Specifically, the rotary vane type macro air pump mainly has the following uses:1

Manufacturing field: used for vacuum packaging, vacuum drying and vacuum evaporation, etc. 2.

Biomedicine: used in the manufacture of drugs, medical devices and medical polymer materials, such as biochips. 3.

Optoelectronics: used in the manufacture of optoelectronic components, such as lasers, solar cells, LEDs and display devices. 4.

Research Field: It is used in laboratory vacuum experiments, such as optical thin film coating, material surface treatment and functional film preparation. In short, rotary vane vacuum pumps play a very important role in the process of vacuum treatment and vacuum pumping in manufacturing, biomedicine, optoelectronics and other fields.

Rotary vane vacuum pump is a kind of vacuum equipment commonly used in laboratory and industrial production, which is mainly composed of parts such as motor, rotor and stator. This article will introduce how to use rotary vane vacuum pumps correctly.

1.Plug it in.

First of all, the rotary vane vacuum pump needs to be connected to the power supply. Before powering up, make sure that the power supply voltage matches the voltage on the device label and that the ground wire is connected.

2.Prepare the interface.

Before using a rotary vane vacuum pump, the interface needs to be prepared and the size of the interface needs to be matched to the equipment. The interface needs to be cleaned to ensure that there are no impurities or damage.

3.Start the device.

Before starting a rotary vane vacuum pump, it is necessary to ensure that the gap between the rotor and stator is lubricated. Once the device is started, you need to wait for a while until the device reaches its maximum operating speed.

4.Start vacuuming.

When the rotary vane vacuum pump has reached its maximum operating speed, it is ready to start vacuuming. During the evacuation process, Huai Digmin needs to ensure the tightness of the joints and pipes to prevent leakage. The speed of evacuation needs to be properly controlled to avoid damage to the pump.

5.Stop the device.

When it is time to stop a rotary vane vacuum pump, you need to close the inlet valve and wait for the equipment to stop. Before stopping the equipment, the lubricating oil needs to be cleaned to ensure that the equipment is dry and clean.

In conclusion, the correct use of rotary vane vacuum pumps can increase the efficiency and longevity of the equipment, while also ensuring the quality of experiments and production.

As shown in the figure below:

Vacuum pump: Vacuum pump is a kind of rotary variable volume gas transfer pump, including dry screw vacuum pump, water ring pump, reciprocating pump, slide valve pump, rotary vane pump, roots pump and diffusion pump, which has the characteristics of large pumping speed in a wide pressure range, and is widely used in metallurgy, chemical industry, food, electronic coating and other industries.

Working principle of rotary vane vacuum pump:

Pronuok Vacuum Pump Oil-sealed rotary vane pump. The pump itself is equipped with an anti-return valve, a gas ballast valve (optional), an outlet filter, an oil return line and an oil cooling circuit. The pump is driven by a direct-coupled flange motor.

The eccentric rotor installed in the pump body has three blades that divide the pump into three compartments, each of which periodically changes in volume with the rotation of the rotor.

When the rotor rotates, the volume of the inlet part of the evacuation cavity expands, and the gas is sucked in from the air intake, and the gas passes through the air cleaner and the open anti-oil return valve enters the cavity pump. As the rotor rotates further, the blades partially separate the pump chamber from the suction inlet. This part of the pump chamber volume is reduced and the gas is compressed.

The gas is discharged from the pump chamber through the exhaust valve at a pressure slightly above atmospheric pressure.

Physical explanation: the working principle and common faults of vane pumps.