Pneumatic lifting chair

Working principle of pneumatic lifting chair

There is a cylinder in the pneumatic lifting chair, and the piston pneumatic rod in the cylinder moves up and down to control the lifting of the chair. Regular manufacturers use nitrogen to charge, the concentration is generally above 99%, and the pressure is about one or two atmospheres.

Lifting chair is a general term, which refers to a swivel chair with adjustable height and horizontally rotatable chair surface. People usually use the names of rotary lifting chair, swivel chair, computer chair, office chair and so on.

Because there is a lifting device to adjust the height under the seat surface of this chair, the seat surface can be lifted up and down. According to whether the lifting device used is pneumatic or hydraulic, lifting chairs are divided into pneumatic lifting chairs and hydraulic lifting chairs.

Extended data

Precautions for pneumatic lifting chair:

1, be sure to buy lift chairs produced by regular manufacturers, and don't covet cheap and inferior goods;

2. When the chair is in use, do not lift it repeatedly;

3. If you are not a professional, don't disassemble the cylinder, and don't let the chair be close to something too hot, such as a baking oven or oven;

4. After using it for a period of time, please ask a professional to check it in time. Once cracks and signs of looseness are found, they should be repaired and replaced in time.

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When the air pressure lifting chair is the lowest, is the internal air pressure high? Or is the internal air pressure high when it rises to the highest level? What is the safest way to adjust it?

When the pressure is the lowest, the air pressure is high, and the adjustment method is suggested to be adjusted according to the instructions.

Pneumatic lifting chair is a new type of chair. There is a cylinder in the lifting chair, and the piston rod in the cylinder moves up and down to control the lifting of the swivel chair. The air pressure rod is filled with nitrogen, and the purity of the gas is generally lower than 90%, which may pose a safety hazard. However, if the air pressure rod is not tightly sealed, it is easy to cause gas ejection. In addition, the material of the pneumatic rod itself is also very important. If unqualified material is used, it may also cause an explosion.

Lifting chair is a general term, which refers to a swivel chair with adjustable height and horizontally rotatable chair surface. People usually use the names of rotary lifting chair, swivel chair, computer chair, office chair and so on. Because there is a lifting device to adjust the height under the seat surface of this chair, the seat surface can be lifted up and down. According to whether the lifting device used is pneumatic or hydraulic, lifting chairs are divided into pneumatic lifting chairs and hydraulic lifting chairs. Due to the high cost, relatively complex structure and insensitive height adjustment, the hydraulic lifting chair has a low market share in China.

Pneumatic lifting chair is widely welcomed by consumers because of its low cost, simple structure and flexible operation. It is estimated that more than 80% of office buildings and companies are using pneumatic seats. With the popularity of personal computers, pneumatic lifting chairs are also used as computer chairs in many families. It is this kind of pneumatic lifting chair that has caused many injuries and accidents. There is a cylinder between the chair surface and the chassis of the pneumatic lifting chair. If unqualified materials are used or there are problems in the manufacturing process, the strength of the pneumatic lifting device may be insufficient, resulting in gas leakage or explosion.

How does the lift chair descend?

The common lifting chairs in the market are pneumatic and spiral, and the lifting chairs fall in different ways according to different styles, materials and structures during use.

Pneumatic lifting chair: It is a new type of chair with a cylinder inside, and the piston rod in the cylinder moves up and down to control the lifting of the swivel chair. The air pressure rod is filled with nitrogen, but if the purity of the gas is lower than 90%, there may be potential safety hazards during the use of the lifting chair, and the gas will burst if the air pressure rod is not tightly sealed. When the lift chair descends, people need to sit on the chair, and then lift the joystick at the lower part of the chair surface upwards, so that the descent can be easily realized by using the body weight.

2. Freestyle gas spring lifting chair: The structure is relatively simple, consisting of a closed cylinder, a piston in the cylinder and a piston rod extending outward. The air pressure in the cylinder is much larger than that outside, and there are small holes on both sides of the piston in the cylinder. According to middle school physics knowledge, when the piston rod presses inward, the resistance is constant. At this time, you can easily adjust the lifting chair up and down by moving the control lever up and down.

reference data

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How to distinguish between hydraulic lifting chair and pneumatic lifting chair?

1, different classifications

Hydraulic chair, also known as hydraulic chair, usually refers to a chair with the functions of height lifting and rotation.

Pneumatic lifting chair is a new type of chair. There is a cylinder in the lifting chair, and the piston rod in the cylinder moves up and down to control the lifting of the swivel chair.

2, the working principle is different

The pneumatic rod of the pneumatic lifting chair is filled with nitrogen. Generally, if the purity of gas is less than 90%, there may be potential safety hazards, and the air pressure rod is not tightly sealed, which may easily lead to gas explosion. In addition, the material of the pneumatic rod itself is also very important, and if unqualified materials are used, it may also cause an explosion.

The hydraulic oil in the hydraulic pump of the hydraulic chair is incompressible, so the air pressure rises quickly and the hydraulic pressure rises slowly.

3. Different characteristics

There is a cylinder between the chair surface and the chassis of the pneumatic lifting chair. The cylinder is filled with nitrogen at 1~2 atmospheric pressure and sealed with a sealing ring. The piston rod in the cylinder can move up and down under pressure, and cooperate with the adjusting handle of the chair to realize the lifting function of the chair.

Hydraulic chairs are most commonly used in hair salons, hair salons, medical salons and other places, as well as offices, salons, bars and so on because of their lifting and rotating functions.

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Where should I throw the pneumatic chair?

You can put it on the balcony.

Pneumatic lifting chair has the characteristics of low cost, simple structure and flexible operation, and is widely used in office buildings and families. How to lower the pneumatic lifting chair?

There is a cylinder between the chair surface and the chassis of the pneumatic lifting chair. Nitrogen with 1~2 atmospheric pressure is injected into the cylinder, which is sealed with a sealing ring, so that the piston rod in the cylinder will move up and down under pressure, and then the lifting function of the chair is realized with the adjustment handle of the chair.

Is the air pressure chair the safest when it is the highest or the safest when it is the lowest?

Pneumatic chairs are the lowest and safest.

Theoretically, cylinders should be filled with inert gas, such as nitrogen. When a person sits on a chair, the piston will be pressed by the piston rod, and then the piston will exert pressure on the gas in the cylinder. When the gas is compressed by pressure, the height of the chair will drop, and vice versa.

When the air pressure drops to a minimum, it is high because the rise is automatic, that is, the internal air pressure is pushed up. When the cylinder rises to the highest, the volume of the cylinder is the largest, and the internal gas quality is certain and sealed. The larger the cylinder volume, the lower the pressure, so the lowest air pressure is the smallest.

When the chair rises, the gas is at the top, and the pressure exerted on the human body compresses the air, which is very dangerous, while the weight of the lowermost human body does not compress the air, which is the safest. Reduction is the safest.

Safety tips:

1. Select products from regular manufacturers. Buy products with qualified marks, and don't covet cheap and inferior goods.

2. To buy a swivel chair, first check whether the plastic bottom plate of the swivel chair is firm, and then slide the swivel chair back and forth. A swivel chair with good quality is more flexible and will not tilt.

Don't rotate and lift the chair repeatedly when it is in use. After use for a period of time, it should be checked in time. Once cracks and signs of looseness are found, they should be repaired and replaced in time.

4. If the weight exceeds 100 kg, sit carefully.