Vacuum pump for pumping air with your own hands

Our article is devoted to vacuum pumps, their types, and also to the spheres of application. This information will be useful for anyone who thinks about whether it is possible to make such a device yourself.

Introduction

Everyone knows what a pump is, and almost everyone used it for personal purposes. But with the vacuum pump, the situation is slightly different. Many consider it a specific device, manufactured and used in industry. Therefore, for ordinary people this information does not seem interesting. Despite this, the vacuum pump for pumping air very well serves for personal purposes, but there are a lot of such equipment. For home use, such prices are out of place, so the question often arises: how to make a vacuum pump for pumping air with your own hands?

Why do I need a vacuum pump

Taking up the manufacture of a vacuum pump, it is important to clearly understand what it is for, because it takes a lot of time, effort and money to make such an assembly.

Many know what a vacuum package is. It has the appearance of a cellophane bag, which has a valve. With the help of it, the products are well kept, the freshness of food is preserved, and the products do not dry out and the bacteria do not multiply on them. Of the most primitive vacuum package, air is simply squeezed out, and for more complex packages, a vacuum pump is supplied. Thus, making a homemade device will allow the air to be evacuated from any packages, but it will have to ensure the tightness of such a package.

Vacuum packaging is also great for storing clothes, since it reduces its volume severalfold. This is especially pleasing when you need to put things in a suitcase or bag.

Those who make wood products know that in order to give it an attractive appearance, it is necessary to soak it with oil. To accelerate this process, as well as for greater efficiency, simply place the oil in a vacuum chamber. Thus, the wood with its internal pressure will squeeze out the air and absorb oil.

Also, a manual vacuum pump for pumping air can pump out liquid, but not directly, but with additional use of the receiver and special capacity.

Types of self-made pumps

Pumps can be different, it all depends on their purpose.

The simplest pump is considered to be a medical syringe. True, with its help it is possible to create vacuum in very small volumes. But it is the most affordable, and if it is not at home, you can easily buy it at any pharmacy, most importantly, pay attention to the size.

Also, a household vacuum pump for pumping air can be made from a conventional car pump.

For greater vacuum, it is possible to make a device from a refrigeration compressor. And for these purposes, a converted aquarium compressor is suitable.

Redesign of car pump

A homemade vacuum pump for everyday life is easiest to make of automobile or bicycle pumps, which are certainly available on farms.

These actions are extremely simple:

• First you need to do the disassembly of the pump, unscrew the cap with the thread that is on the top of the sleeve;
• Remove the piston and remove the O-ring from the stem (for this, unscrew the screw located in the middle);
• Having turned a sealing ring, to fasten it back to a stock;
• Collect the pump.

With such simple actions, a device is obtained that creates a weak vacuum in containers with a small volume. But for a vacuum pump, a check valve is needed.

Fitting the valve

Check valves for homemade vacuum pumps can be purchased from a store that sells aquarium equipment. This inexpensive plastic part is installed in the aquarium compressor. Maybe friends or acquaintances have such a dead compressor. With a non-return valve, nothing happens (because there is nothing to break). Thus, it can be obtained and placed in our homemade vacuum pump for air evacuation.

The valve is fixed in a special opening of the device, and a tube is connected to it, which leads into the container. Of course, this element must be installed correctly - it is necessary that air passes from the tank to the pump. To check the direction of operation of the valve before installing it, it needs to blow, it does not need to flow, this will mean that this valve end is connected to the pump. If the part is of good quality, and all manual connections are carefully sealed, then a vacuum vacuum pump can provide a residual vacuum pressure of up to 200 Mbar.

Making a vacuum pump using a compressor

A small vacuum pump for pumping air can not solve all problems. In order to create a higher vacuum or to pump out large volumes of air, the use of a pump with an electric drive is suitable. To make it you need any household compressor.

There is little work: the tube, with which air is sucked, is attached to the input of the device (before this you need to remove the filter). After the tube is connected, you can turn on the compressor.

When filling a container with liquid or products with a high moisture content, air that is pumped out will contain water vapor in large quantities. In such conditions, the compressor can not work for a long time. In order for the compressor to fail, there must be an additional drying container in the system, in which there is a receiver and a settler.

Vacuum pump for pumping air, made from a refrigerator

A household compressor is not always at hand, so you can use a supercharger from broken refrigerators or air conditioners.

Such a vacuum pump is manufactured as follows:

• A saw should be cut with copper tubes, by means of which the compressor is connected to the condenser and the evaporator;
• Here you need to pay attention to how correctly the compressor is connected to the mains and the relay, if the wires are connected incorrectly, the compressor will not just not work, but it can break;
• Then on the copper cut, you need to put on a durite hose and attach it to a vacuum tank;
• Now you can connect the compressor to the network.

Of course, self-made from a domestic compressor will not turn out to be very powerful, but as a vacuum pump for pumping air out of packages it will fit, and basic household tasks will perform.

How to remake an aquarium compressor

A vacuum pump for pumping air from the cans can be made from an aquarium compressor, which has already been mentioned above. This is a fairly practical option. Such a design does not need a serious improvement, just change its appearance a little:

• Carefully inspect the compressor and take care of the fastening elements;
• Having removed them, to be engaged in dismantling of return valves;
• After removing the valves, they need to be swapped;
• Assemble the product, attach the tube to the vacuum tank and start work.

To prevent moisture from entering the compressor, condensate can be discharged through small holes in the housing.

Possible damage to the vacuum pump

- Motor malfunction or incorrect connection.

- Violation of the compatibility of the drive and the shaft of the discharge mechanism.

- Workpiece jamming in the discharge.

- Broken bearings in support assemblies.

- Appearance of scale on working elements.

- Overheating of the pump and subsequent wear of parts.

- Excess or leakage of the working environment.

Troubleshoot problems

The vacuum pump for evacuation of air, like any other mechanism, can break down or crash. The most common failures we listed above, and now we need to figure out how to eliminate them:

• Engine malfunction or improper connection. The most common mistake is a broken connection scheme. Initially, you need to check the power, that is, the integrity of the network cable. This will require an indicator probe. If the probe lights up, and after the power supply the motor rotates, then the cause of the failure is not that. If not, it means a malfunction of the engine, it will have to be repaired.
• Violation of the alignment of the drive and the shaft of the discharge mechanism. This problem is most often solved by installing the gasket under the engine or under the discharge mechanism. If the pump does not resume operation after that, it is necessary to inspect the coupling for displacement or deformation. In this case, the part is replaced or replaced.
• Jamming of the working element in the discharge mechanism. This problem usually occurs due to contamination of the pumped medium. To solve the problem, disassemble the product and clean it.
• Breakage of bearings in support units. This problem is accompanied by loud noise and strong vibration. This means that the bearing has failed and needs to be replaced.
• Appearance of scale on working elements. Such a problem usually appears on water-ring pumps, in which the working medium is water. To resuscitate the unit, you need to get rid of the salt deposits with the help of a special formulation.
• Overheating of the pump and subsequent wear of parts. This problem is especially important for oil-free rotor-plate aggregates. Even the most advanced materials, for example Teflon, are unable to completely compensate for the missing lubricant. Therefore, it is so important to comply with the temperature regime. If there is an overheating, the damaged parts will have to be replaced.
• Excess or leakage of the working environment. If the water ring pump has reduced its performance, you need to check the service fluid pressure. It could fall because of its leakage. The solution to the problem is the replacement of the seal in the hole.

If the seal is in a satisfactory condition, it means that it is in the flange connections - you need to replace the gaskets.

Also, the intensity of fluid flow can be due to heavy wear of parts. Usually this happens when the pump has already served its own, and it needs to be replaced or checked by the unit, perhaps it is still maintainable, and only the most worn parts are subject to replacement.

At high service medium pressure, because of its excess or overheating, the device can also break. If the optimum values are set, the pump will again work fine. If the temperature regime is met, then you must reduce the flow of water or close the valve on the pressure line.