Why can t the balloons hit by the pump fly?

Because the air that comes out of the pump is air. Hydrogen balloons can fly.

A balloon is a sealed bag filled with air or some other gas. Balloons can be used not only as toys, but also as a means of transport. There are many types of balloons, now mainly introduce the balloons produced by natural latex, which can be used as decoration, arches made of opening ceremonies, can be printed with their own advertising patterns as publicity, can be printed with photos of the wedding couple as congratulations, can be decorated with balls, newlyweds floats, etc., now balloons have become a beautiful landscape, more and more favored by people!

Balloons used to be called "eggplant" as a toy, and there was a small bamboo whistle at the opening of the balloon, and when the balloon was blown full of air, the mouth would be very loud. Balloons can also be used as decorations and as a means of transport. If the balloon is large enough and the gas inside is lighter than the same volume of air, the buoyancy generated exceeds the weight of the airbag and attached objects (e.g. gondolas, hot air balloons, etc.), the balloon can be raised.

When the specific gravity of the gas inside the balloon is smaller than that of the gas outside, the balloon will fly up because of the difference in specific gravity. The pump is injected with air, and like the gas in the surrounding environment, there is no difference in specific gravity, and of course it cannot fly.

Because the pump sucks air in and then into the balloon, it can't fly.

It takes a special hydrogen pump to fly, and the general pump is air, which is not lighter than the surrounding air, so it can't fly.

When the air cylinder and the air valve are connected, the air needle is not pressed into the air valve, resulting in the compressed air cannot enter the air valve.

Solution: When the air cylinder and the air valve are connected, there must be a downward pressure action to ensure that the air needle is pressed into the air valve before pumping.

Reasons and methods for the inflatability of the inflate.

1. The built-in shrapnel of the air pump has been softened for a long time, and when the pressure of the air reservoir reaches a certain air pressure, the softened shrapnel cannot be bounced up due to the counterpressure of the air reservoir, and the built-in shrapnel of the air pump needs to be replaced.

2. The pump pipe is blocked, disassemble the pump pipe from the dryer, start the pump, if there is black smoke out of the pipeline, it is blocked by the pump pipeline, and the solution is to replace the pump pipeline.

3. Where there is air leakage in one of the four circuits, the four circuit protection valves will be automatically closed.

4. The built-in spring of the four-circuit protection valve is stuck due to too long time.

When using a pump, connect its outlet pipe to the valve of the bicycle tire, and the function of the valve is to only allow air from the pump to enter the tire, and not allow air from the tire to flow backwards into the pump. There is a gap between the piston and the wall of the pump, and there is a rubber bowl on the piston that is concave downward. When the piston is pulled upwards, the volume of air under the piston increases and the pressure decreases.

The air above the piston squeezes from all sides of the bowl to the bottom. When pressing down on the piston, the volume of air below the piston decreases, and the pressure increases, so that the rubber bowl is pressed against the cylinder wall to prevent the air from leaking above the piston, and continues to press down on the piston, when the air pressure is enough to open the valve core of the tire, the compressed air enters the tire. At the same time, the air outside the barrel enters the top of the piston from the gap at the upper end of the barrel.

There are several reasons why the pump can't get in

1. When the air cylinder and the air valve are connected, the air needle is not pressed into the air nozzle.

2. The air outlet is blocked.

3. The connection between the air cylinder and the air valve is poor, resulting in air leakage.

How to inflate your bike with a pump:

1. Place the foot-operated pump.

2. Connect the pump connector of the pedal pump to the bicycle valve.

3. Start inflating the bike by pressing the inflatable pedal with your foot.

4. Observe that the pressure gauge pointer is close to the standard air pressure marked on the bicycle tire to end the inflation.

Scope of application. 1. It is suitable for bicycles, basketballs, volleyballs, footballs and other balls and bicycle inflatables. It is versatile, compact and sturdy.

2. The high-pressure pump can be used as a front and rear shock absorber, or it can be used as a general mini pump with the car.

3. American and French dual-purpose valve - suitable for any bicycle type.

4. Balls and other inflatable items are applicable.

5. In addition to changing the angle of the pumping hose at will, the joints can be rotated 360 degrees, which is convenient for pumping at any angle.

6. Air valve storage holder - intimate small design, super convenient storage.

7. Intimate red button deflation valve - when the pumping air pressure is excessive, you can press the red button to decompress in time.

8. Arc integrated mirror air pressure indicator.

9. Alloy cylinder shell, both texture and durability.

10. Mini telescopic design, easy to store - only 22 cm when stored, can be placed in the pocket of clothes, no burden to use.

Most of the pumps that come with toys are disposable, and the quality is very poor and cannot be repaired. You can buy a large one online, more than a dozen yuan, durable (let the seller bring you more pieces such as ball needles and the like). A family must-have.

There is air at no load, and you can't hit it, see if the air pressure can't go up, and you should choose a high-pressure pump. Choose stainless steel high-pressure pump, easy to use.

Scientific principle: Because of the effect of atmospheric pressure.

Experimental operation device diagram:

The earliest experiment to determine the value of atmospheric pressure.

Torricelli Experiment:

It was only in 1643 that Torricelli revealed the reality of atmospheric pressure for the first time, and measured its value to be equivalent to the pressure of a column of mercury at a height of 76 cm, but this discovery was not widely accepted at the time and was <>

In 1654, Glick of Germany surprised people when he conducted hemispheric experiments in Magdeburg.

Life with strong atmospheric pressure should be used for the ruler.

Piston pumping.

The balloon that can fly up the year is what fills the gas.

Hello! The only gases that can fly are hydrogen and helium. Hydrogen is unsafe and easy to explode, but safety is important at weddings.

The other is helium, helium is not dangerous, if you want to make the helium balloon fly for a long time, you need to use a balloon protective liquid, put the protective liquid into the balloon first, knead it evenly, and then inflate it to fly for a long time. Or you can use dispensing to glue the balloon to the ceiling.

What kind of gas can a balloon float with it?

Helium is the best, safe, not dangerous, and easy to get.

Hydrogen is more dangerous and will**.

What can the balloon be inflated to fly.

Hydrogen. What is the inflated balloon that can fly.

Professional balloons are helium, and small balloons are filled with hydrogen.

As long as the air quality is smaller, the relative mass of the original closed group is less than 19.