DIY vacuum pump from a car compressor

Residents have long appreciated the advantages of the vacuum method of storing food in special containers; now this technology is also used for storing seeds and transporting clothes.

In addition, vacuum is indispensable in fermentation and distillation installations: it can be used to lower the boiling point of a liquid and rid the fermentation product of an unpleasant odor.

To solve all these problems you will need only one device - a household vacuum pump. Today, such devices are produced by a number of companies, but is it worth giving your hard-earned money if you can easily make a vacuum pump with your own hands? How and from what? This is what our conversation will be about.

Operating principle and simplest vacuum pump

A simple vacuum pump is a honey syringe and a check valve from an aquarium compressor. There is no need to explain the principle of operation of the device - in several cycles of suction with a syringe you can pump out air from a small volume, no more than a small package the size of a matchbox.

To work with larger volumes, it is necessary to use either more efficient pumps with some modifications, or a compressor. The power of the compressor depends on the needs for using the vacuum cleaner, and the compressor can be either miniature, for an aquarium, or more powerful - for inflating car tires, painting work. But the essence of the alterations does not change.

Before making a device, you need to understand its operation. Almost all consumers come across vacuum packaging every day and know what it is. They are presented in the form of a cellophane product, which perfectly preserves food without drying out. In the simplest packages, air is squeezed out manually, while more complex ones involve the use of a working mechanism. Thanks to a homemade device, you can create a vacuum in any package, although the packaging will need to be sealed.

Vacuum packaging is also used for storing clothes, as the volume is reduced and all items can be placed in a bag or suitcase. The use of the device in industry is especially common for the following purposes:

Use for the production of bags and packaging tapes;
Distillation of a chemical substance, drying of a chemical substance and compression of a gaseous substance;
Fish or vegetable cleaning, food processing;
The printing industry uses compressors in printing and processing machinery;
Use in environmental purification devices:
In medical breathing apparatus and dental equipment.

Vacuuming is widely used to process wood and give it aesthetics. To do this, the wooden product is soaked in oil, and to speed up the process and be more efficient, the wooden object is placed in a chamber and the air is pumped out. In this case, the internal pressure of the wood pushes out air and sucks in oily substances.

Where is vacuum used?

The manufacture of vacuum pumps is of interest to home craftsmen who know how to use them. For most ordinary people, the unit is of no value. In fact, with the help of air pumping, many useful things are realized:

Long-term storage of clothes and food. Just put them in a plastic bag, connect the pump and immediately seal them. The packaging will turn into a reliable container, free of bacteria and harmful microorganisms.
Vacuum canning in jars.
Filtration of various solutions through the smallest meshes.
Removing air and moisture from the evaporator and condenser units when installing a domestic air conditioner.
Oil extraction when repairing an automobile diesel or gasoline engine.

Similar devices are also used for vacuum body massage and operation of machines - presses, packers and molders.

Process description

The vacuum pump is made as follows:

First, cut off the top of the compressor with a hacksaw.
Then the motor suspended on springs is removed from the housing. No tools are needed here - it is not secured.
The copper tubes located in the housing are connected to oil-resistant tubes, connecting to the “” and “-” lines on the motor. Excess elements are cut off.
The opened case must be equipped with a lid. It should be slightly smaller than the sawn-off fragment so that the oil can flow into the container (along its edges). The lid is best made from brass foil using a soldering iron. Its inner side is equipped with stiffening ribs, and its outer side is covered with linoleum (for sound insulation).

Important! Often a breather is installed in the lid. This is an additional means of protecting against leakage if the connections between the tubes were not made very carefully.

During operation of the compressor, a certain amount of oil is certainly lost and is released into the discharge line as oil mist. A tubular level gauge helps track costs. It should be located behind a transparent tube, which is connected to the container using a hose. The tube can be replaced with the body of a ballpoint pen.

The level gauge is covered with a cap to protect it from dust, leaving access for air. Make marks on the mechanism yourself, indicating the maximum and minimum oil levels. The junction of the tube and hose is sealed with sealant.

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The finished structure is placed in a box. Its frame is made of a steel angle measuring 2.5x2.5 cm. Any sheet material can act as a cladding. A door should be mounted into the side wall in order to take readings from the level gauge without removing the vacuum pump from the box. A simple latch will be enough to secure it.

We use a membrane compressor from an aquarium

For example, to use a compressor from an aquarium with minimal capacity as a vacuum pump, it is enough to modify the unit in which the valves are located and install a tube to drain condensate and trapped moisture.

To do this, it is necessary to swap the valves, then the diaphragm pump will not pump air, but pump it out from a certain volume. The designs of diaphragm pumps are different, but the principle of modernization is the same. An example of converting a small aquarium pump into a vacuum pump is shown in the photo.

For more serious tasks, you need to use a more powerful compressor. For example, you can use a device from an old refrigerator. As a rule, with the help of such an oil-type compressor, you can achieve a pressure of about 5 atm, which is quite enough for domestic needs. The assembly diagram of the device is quite simple.

High efficiency oil and oil-free compressors

The oil compressor is connected to a receiver, which can be any small gas cylinder or similar vessel. The pump has three outputs:

for filling oil;
for air intake;
for air supply.

Then everything is simple - simple motor oil is poured into the compressor through the necessary tube, a dust filter is connected to the air intake tube, and a receiver is connected to the air supply tube through a splitter. Now the device can be used both as a compressor with a receiver and as a vacuum pump with very high efficiency. To use it as a compressor, you only need to connect the air supply hose to the splitter from the receiver. If the device is needed in the form of a vacuum pump, then the hose is connected to a section of the air intake pipe.

These are by no means all the methods and variations of converting compressors into vacuum pumps. In the case of an oil-free compressor, there is no need to install an oil separator, but a filter on the air supply pipe must be installed. Try it, and to solve any problem you can concentrate a vacuum pump from the means at hand.

Source

Device from a car pump

A homemade vacuum pump at home can be made from an ordinary car or bicycle pump. The work consists of 4 consecutive steps. Namely:

The device is disassembled and the cuff is removed.
The cuff is turned over to the other side and screwed back on.
A check valve is installed in the pump tube.
A tube or hose made of durable material is placed on the free end of the valve.

The essence of the modification is that the direction of the working stroke changes: when you press the handle, the volume of the chamber decreases, and the air escapes through the inverted cuff.

When the handle is raised, the chamber creates a vacuum .

The vacuum pump has a long service life thanks to its simple design

Such a homemade vacuum cleaner can be useful at home, for example, when sucking air from covers for storing pillows and bulky items without the help of a vacuum cleaner.

Which pump should I buy to use?

You can purchase a vacuum pump without a prescription at a pharmacy kiosk. Before using it, you should consult a urologist. The doctor will give recommendations on whether there is a need to use a pump depending on the individual characteristics of the patient. The specialist will also tell you which brand of vacuum to buy so that it meets the man’s requirements.

You need to pay attention to pumps equipped with safety valves

. This device will help reduce the risk of injury during the procedure and will keep the vacuum pressure normal.

Before use, read the instructions for use thoroughly. The device must not be given to other people. For the first 14 days, the session should not exceed 2 minutes. To maintain the result obtained, you should put an erection ring on your penis. More than 80% of male respondents speak positively about using the pump.

How to make a unit from a compressor

Not all problems can be solved with the help of hand-held devices that are unable to create a deep vacuum (minus 1 bar). To increase productivity, you should use electric pumping devices - compressors.

Various types of similar units are suitable for the manufacture of homemade vacuum pumps:

aquarium oxygen blower;
compressor of an old refrigerator;
Chinese car electric pump;
multi-purpose compressor of a household series with a capacity of 350 l/min.

Note. On the Internet you can often find instructions for making a liquid ring type vacuum pump. The device is difficult to assemble (some parts need to be machined) and to operate, since it requires organizing the cooling of the feed water and intake air. We do not recommend adopting this idea.

Aquarium blower conversion

The device is a plastic case containing a membrane micropump with two valves and a small motor powered by electricity. Modernization is carried out in the following order:

Using a screwdriver, unscrew the screws and remove the housing cover.
Using a wrench and tweezers, disconnect the rod that moves the rubber membrane. Pull the blower element out of its socket.
Disassemble the assembly into 2 parts - a membrane and a valve group.
Swap the valves and carefully file one corner of the plastic cover as shown in the photo.
Reassemble the elements in the reverse order and arrange for the air pumped inside to be vented through the hole.

Advice. To protect the membrane assembly from dust, debris and moisture, install a car gasoline filter on the supply hose.

If you did everything correctly, the supercharger will be converted into a homemade air intake of average performance. a deep vacuum , but it will definitely help solve various small problems. Unfortunately, it will not be possible to repair and return the compressor to its original state - you need to change the valve group.

Using a refrigeration compressor

A working unit from any old refrigerator is suitable for assembly. Moreover, such a vacuum installation, made by hand, retains the ability to act as a compressor . Before assembly, prepare additional structural elements:

frame welded from corners or twisted with bolts;
receiver - a propane or freon cylinder;
pressure gauge (in this case, a vacuum gauge);
connecting hoses;
filter - moisture separator;
wires and circuit breaker;
the collector can be a regular cross.

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Note. If you plan to use the installation as an air blower, then you will additionally need a pressure switch to ensure timely shutdown of the engine.

Before reassembling, drain the unit of old oil by turning it upside down. At the same time, you will find out which of the three pipes is the oil pipe. Then fill in new special lubricant for compressors in the amount indicated on the nameplate or directly on the housing.

Screw the receiver with the compressor to the frame. The latter must stand strictly in a horizontal position, secured through anti-vibration pads.

Unit assembled with filter and automatic shutdown

Advice. For the receiver, it is better to choose a small cylinder with a capacity of 25 liters.

a compressor more than a vacuum pump, do the connection differently. Place the crosspiece on the discharge side, attach a receiver, a pressure switch and a pneumatic hose to it. A filter and vacuum gauge are installed on the suction side. More details about the assembly of the unit are described in the video.

Modernization of other devices

Portable Chinese pumps used for inflating car tires are not suitable for conversion into a vacuum apparatus; their performance is too low. It’s easy to check this fact: disassemble the plastic housing of the unit and look at the dimensions of the cylinder with the piston. The latter is driven by a connecting rod mounted on the electric motor shaft.

To convert such a supercharger into an intake, it is enough to solder a plastic tube to the opening of the intake valve. The simplest way is to use a glue gun. Then follow the previous instructions - install the filter and pressure gauge on the suction side.

The tube must be glued to the opening of the suction valve

Note. To use a vacuum pump made from a mini-compressor at home, you will have to find or install a 12-volt DC source.

A multi-purpose compressor on wheels (mainly made in China) is the best donor for making a vacuum pump. Thanks to a hardware capacity of 350 l/min, the supercharger is capable of instantly creating a vacuum effect with a depth of up to 1 bar. This is enough to operate various homemade machines - a vacuum packer and a molder.

Unscrew the air filter installed on the cylinder head. Instead, connect a hose or pipe leading to the receiver, pressure gauge and vacuum object. Don't forget to put a filter on the same mowing line.
In the standard receiver, remove the condensate drain plug.
If necessary, make a button to remotely turn on the unit.

A large propane cylinder with a capacity of 50 liters should be used as a receiver for this vacuum pump. It will serve as a dryer for the pumped-out air and smooth out the pressure surge when the engine starts.

Varieties of homemade structures

There can be many types of pumps. It depends on their intended purpose. The simplest vacuum sealer can rightfully be considered a medical syringe. But its disadvantage is that a vacuum can be created in small volumes. And even if you don’t have a medical syringe at home, you can easily buy one at the pharmacy, just pay attention to the size.

But in order to be able to pack large volumes, a car pump is well suited. It just needs to be reworked to the required parameters. Moreover, making a vacuum pump from a car compressor with your own hands is not difficult.

You can also construct a vacuum pump from a compressor from a refrigerator, or remake accessories from an aquarium.

Using a car pump

A homemade vacuum pump can be made from different raw materials. The most popular options are car and bicycle hand pumps.

And you can make it using the following steps:

First you need to disassemble the structure. First, the threaded cover is opened, which holds the entire mechanism together.
Then you need to pull out the piston and remove the ring (it acts as a seal). You can remove it by unscrewing the screw located at the bottom.
After this, you need to turn the seal over and screw the screw back.
Assemble the mechanism.

In this way, you can assemble a device that creates a gentle vacuum in containers with a small volume. But in addition to the vacuum pump, you also need to install a valve.

Vacuum valve installation

In order to make a vacuum sealer with your own hands, in any case you will need a check valve. It can be easily found in a store that sells animals. This part is installed in the compressor from the aquarium. Alternatively, you can ask friends who have fish, perhaps they have such broken compressors. Therefore, the check valve will not be a problem, since it is already broken. It is ideal as a spare part for a vacuum sealer.

Such a valve must be secured in place of the hole of the future device . A tube is attached to the valve, which will go into the container. It should also be placed on the correct side so that it draws air towards itself rather than releasing it back. In order to check in which direction the valve operates, you need to blow into it before installing it. If air does not pass through, then this part must be attached to the base of the structure. If the valve is of high quality and reliably sealed, then such a device can create a pressure of 190 Mbar.

Following actions

Important! When choosing a pressure gauge, keep in mind that the pressure level can reach 6 atmospheres.

Excessive pressure is completely unacceptable when starting the engine. The requirement is due to the specifics of the starting circuit. During startup, the current that arises in the working winding turns on an electromagnet in the starting relay. It attracts the core with contacts. The contacts close and supply current to the starting winding. At normal pressure, the engine spins up in the shortest possible time. As a result, the current in the working winding drops, the electromagnet opens the starting winding and releases the core. If there is excess pressure in the discharge mowing line, the high load will lead to rapid wear of the starting winding.

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This phenomenon can be prevented by installing an electric pneumatic valve on the mowing line, followed by a check valve behind it. The first one is connected to the motor circuit and then it will be open while the installation is not operating, and when it is turned on, it will close.

Vacuum pump from a car compressor / DIY Vacuum pump Converting a 12V Air Compressor

Such precautions do not make sense if the compressor will be used for simple purposes, for example, for purging. However, if you plan to connect any device for accumulating pressure, you cannot do without an electric pneumatic valve and a check valve.

Important! When the electromagnet in the starting relay is turned off, the core falls, so installing it on its side or upside down is completely unacceptable.

The vacuum pump is ready, all that remains is to connect the electricity through the fuse.

Home repairs

All people who were interested in how to create a vacuum at home, and those who have already made their first device, also need to know how to repair it, since it can break down often. In principle, any mechanism or motor can break down or start to work poorly:

Incorrect motor connection or motor failure. This mainly happens when the required motor circuit is connected incorrectly. First, check the integrity of the wiring and whether it is well insulated. A trial indicator will help with this. If it lights up when connected, then the wiring is intact, and this is not the reason. Otherwise, the motor is broken and must be sent in for repair.
Drive and shaft mismatch. Such difficulties in operation, as a rule, are solved by installing a gasket under the engine or discharge element. When this does not give the desired result, you need to look for the problem in the clutch. She could have moved. If the situation is confirmed, the part must be replaced.
Motor jamming. As a rule, this problem is very common. It occurs due to pumping out dirty water. In this case, the motor must be disassembled and cleaned.
Bearing failure. The motor begins to hum and vibrate strongly. The reason for this is a broken bearing that needs to be replaced.
Scale in the engine. The problem often occurs on liquid ring pumps because they operate in a water environment. Repair is accompanied by cleaning using special solutions.
Overheating of the structure, as well as wear of certain parts. Devices break due to lack of lubrication. Even materials such as Teflon are not able to compensate for the necessary lubrication. To avoid such breakdowns, you must maintain the correct temperature conditions. And when the motor overheats, the burnt parts will have to be replaced.
Leakage of working fluid. If the design has reduced performance, the service fluid pressure is checked. The reason for this could be its leakage. In this case, it is necessary to replace the seal in the hole.

If, after checking the seal, it turns out that it is in satisfactory condition, the problem may be in the flange connections: the gaskets there need to be replaced.

Liquid may leak due to severe wear of parts. This usually happens with older pumps. It is necessary to check whether all the parts are out of date, since in certain cases the motor can no longer be repaired.

The device may fail due to high pressure or overheating. If it is configured correctly, then at the correct temperature conditions the structure will work for a long time.

Low vacuum pump

The hand pump is ready. They can divert water from one vessel to another by immersing one valve in water and the other in the container where the liquid is supposed to be pumped.

This pump operates on a centrifugal principle. It is difficult to do it yourself, however, if you have a familiar welder and turner, it is quite possible. To create it, you need to have a cylindrical body into which a shaft with a blade wheel is inserted. When liquid is supplied, the paddle wheel begins to rotate and, under the influence of centrifugal force, a vacuum .

The mechanism is driven by an electric motor. The vane wheel is mounted off-center to allow gas to be pumped and pushed through the system. The disadvantage of the system is that the liquid with which the process is carried out (usually water) constantly heats up and has to be changed.

Such a pump is equipped with inlet holes through which water enters and outlet holes through which gas is discharged.

Mechanisms that function in this way are used in large enterprises, as well as in agriculture, to remove gases with large amounts of suspended matter in the form of dust and sand. For continuous operation, gas removal, constant water supply and a motor cooling system are provided.

Manufacturing a vacuum pump with a receiver

The vacuum pressure created during operation of a piston pump is not constant, since constant surges occur during the operation of the mechanism. For many precision operations this is unacceptable, so a vacuum accumulator called a receiver is required.

A receiver is a sealed container of a cylindrical or spherical shape with hemispherical ends, made of very durable materials that can withstand high pressure.

The receiver maintains a certain buffer state of the pump and has a technological reserve of vacuum in the event of a sudden leak for production needs.

Receiver operating principle:

The device is connected to the inlet line in series and must be equipped with a pressure gauge;
Operating vacuum parameters are calculated according to the permitted pressure for the container used;
If pumping parameters are exceeded, the balloon may collapse inward.

The receiver can be used when pumping out oil and other liquids. In this case, you need to additionally install a kind of separator to separate the liquid from the air. Two fittings are placed in the separator plug: one is connected to the suction tube of the pump, and it must be installed above the water level so that the liquid cannot enter the piston group of the compressor unit; the second fitting is connected with a hose to a container with liquid. When a vacuum forms in the separator due to a pressure difference, the liquid is pumped into this container.

Sources:

https://intehstroy-spb.ru/spravochnik/kak-i-iz-chego-sdelat-vakuumnyy-nasos-svoimi-rukami.html https://pressadv.ru/pnevmatika/vakuumnyj-kompressor-dlya-otkachki-vozduha .html https://nashprorab.com/vakuumnyy-nasos-svoimi-rukami-iz-komp/ https://kanaliza.ru/nasosy/samodelnaja-vakuumnaja-pompa-iz-3-komplektujushhih https://qustu.com /kak-sdelat-vakuumnyj-nasos-iz-bytovogo-kompressora/ https://vodakanazer.ru/nasosy-i-nasosnoe-oborudovanie/nasosy-dlya-kolodcev/vakuumnyj-nasos-svoimi-rukami-iz-kompressora.html https://pressadv.ru/samodelkinu/vakuumator-svoimi-rukami.html https://kanaliza.ru/nasosy/modernizirovannyj-vakuumnyj-kompressor

Preparing for therapy

Before starting the session, you need to consult with a specialist. Only a specialist will be able to examine the patient and identify contraindications to the use of vacuum therapy. Sometimes the cause of contraindications may be psychological aspects that can be easily eliminated.

Before using the pump, it should be washed with warm water and soap. It is forbidden to boil or pour boiling water over it. Also, the pump should not be used by more than one person. The pump is quite a fragile thing and should be used carefully and not thrown. The vacuum should be stored in a dark and dry place at a temperature of no more than 35 degrees.

Algorithm for performing the procedure:

With systematic use of the pump every two days

significant results can be achieved.

For the first 14 days, it is recommended to use a vacuum at night two hours before bedtime for 30 seconds. In subsequent weeks, you can increase the impact of the pump to 60 seconds, while taking a break for 2 minutes. If immediately after the session the erection weakens, then you need to use an erection ring. It is attached to the base of the penis.

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