Do-it-yourself compressor: mounting options. compressor receiver. Accurate calculation and selection How to make a gas cylinder receiver do
"Today we will look at step by step instructions how to make a compressor from a gas cylinder with your own hands .. Every master in our time is simply obliged to have a compressor in his workshop, because you can connect an airbrush to it, as well as a pneumatic tool that works by supplying compressed air from the compressor reservoir, and simply It is convenient to use the gun to remove dust and blow parts.
To understand how the compressor works, it is necessary to study its diagram.
Then you need to safely drain the remaining gas from the cylinder and unscrew the valve with a wrench or a gas wrench, see how to do it correctly. 
We remove the motor from the old air conditioner. 
Unscrew the valve. 
Fill the bottle with water from a hose. 
We drill holes for the gearbox and valves. 
Saw off the protruding parts. 
We weld a new sling. 
And also for ease of movement, it is necessary to put the compressor on wheels. 
We make a shelf and install a motor from an air conditioner or refrigerator. 
We paint with a can of paint. 
We connect the wiring and connections. 
Here is such a simple and budgetary compressor out of the trash turned out. If you have any questions then ask them in the comments. Everyone Thanks a lot for your attention!
The compressor is an indispensable thing in the household, in the country. This is especially true for those who have their own workshop and love to craft or airbrush. Of course, you can go and buy this unit on the market, but often its price is quite high, which prevents the purchase. But, of course, there is a way out - to make a compressor with your own hands.
You don't need much for this, although you will have to buy something. Many probably have old refrigerator, which no longer fits into the interior. While still in working order, it goes to the dacha, where it stands and rusts, or to the trash heap. So, its compressor will be the main part of the future installation. As a receiver, an ordinary old fire extinguisher or a small gas cylinder, which has served its time - this is not such a problem, since almost everywhere everything is gasified. In a specialized store, you will need to purchase adapters, a pressure switch, a pressure regulator with a pressure gauge, an air filter and a water separator filter.
Installation does not involve complex work.
If a compressor, made from improvised materials with your own hands, involves a receiver from a gas cylinder, then it is necessary to remove propane residues. To do this, open the valve, put the cylinder upside down, then fill it with water and turn it over again. After that, the procedure with water must be repeated, but leave the tank in its normal position - let the remaining gas escape. Then you need to make outlet holes on the receiver: this is done conventional drilling and tie-in fittings and adapters. The self-mounted compressor involves hose connections (oxygen, high pressure). The outlet at the end of the receiver is being finalized - a pressure gauge is installed, and in it - an outlet to the working hose. In addition, the receiver must be equipped top platform if the engine itself is on top. Such a compressor, made by hand, will take less space. And the installed wheels will give it maneuverability.
How a compressor works
The principle of its work is simple. Its main part is the engine, thanks to which air is pumped into the receiver. The receiver, in turn, is equipped with a valve that prevents it from escaping. This creates air pressure. The compressor is equipped with a sensor that prevents excess pressure in the receiver, and the relay automatically turns off the engine. This helps to avoid an explosion and, therefore, not only damage to the mechanism, but also harm to human health. According to this design, various compressors can be made, it all depends on the capabilities and ingenuity: the larger the receiver, the more power the engine requires. Compressors from refrigerators, if they are paired, are able to work with a gas cylinder with a capacity of 50 liters and a pressure of up to 16 atmospheres.
How to connect the compressor to the network?
The electrical part consists of such parts as a starter, a trip relay, a wire connection terminal block. Power is supplied from a conventional network, which allows the compressor to be used in any place where there is a conventional outlet.
To increase the efficiency of work using compressed air, the vast majority of compressor units use receivers - tanks for storing air under the required pressure. Depending on the intensity of work, receivers of 50, 100 liters and even more can be used.
Why do you need a receiver in the compressor?
The receiver for the compressor performs several important functions:
- Stabilizes the pressure of the air supplied to working area(Differences in pressure values are inevitable, since the single cycle of operation of any compressor involves a suction phase and an air discharge phase).
- They provide compressed air supply for some time in case of interruptions in the operation of the compressor, or when an additional consumer is connected to it.
- Air purification from accumulated condensate, since high humidity air, which increases with increasing pressure, leads to intense corrosion steel parts compressor.
- The accumulation of compressed air in the receiver for the compressor leads to a subsequent decrease in the total vibrations in the system, which, in turn, reduces general level noise, and reduces the level of loads on the base of stationary units.
When performing work related to the production of compressed air in especially large quantities, a regular receiver may not be enough. For example, when sandblasting surfaces with a large area, in order not to purchase a more powerful compressor, an additional receiver is often used.
The presence of the receiver, in addition, allows you to use the compressor periodically, i.e., reduce its consumption electrical energy.
Structurally, the receiver for the compressor is a sealed tank with a certain capacity. For mobile compressors, receivers up to 50 ... 100 l are used, for stationary - up to 500 ... 1000 l. Equipped with air filters, condensate traps and shutoff valves for connection to the main unit and to a working device that consumes compressed air - a nozzle, a spray gun, etc.
The container is made of steel, from corrosion-resistant steels such as 10KhSND or 16GA2F. In exceptional cases, for compressors especially low power, receivers can be plastic or even high-strength rubber.
The layout of the receivers can be horizontal or vertical. The first is used in mobile units, the second - in stationary ones. Each variety has its own advantages and disadvantages. In particular, in vertical receivers it is easier to drain condensate, but horizontal receivers are more compact and require shorter pipelines.
How to choose the optimal parameters of the receiver?
In addition to capacity, the receiver for the compressor is also characterized by:
- Humidity limits.
- Operating conditions (difference in external ambient temperatures of -15 ... + 40ºС and relative humidity of not more than 75 ... 80% is allowed).
- Requirements for the installation site (away from heat sources, combustible and explosive materials, as well as in an atmosphere polluted by mechanical particles - for example, near circular saws).
The requirements of PB 03-576-03 (Rules for the Design and Safe Operation of Pressure Vessels) also prohibit the operation of receivers that have not passed the verification of the operability of the tank walls, as well as those that have external surface defects - cracks, dents, traces of atmospheric corrosion.
The choice of characteristics of the receiver for the compressor is made as follows. Set the required compressed air consumption, the duration of its consumption, the minimum and maximum pressure values. Further, using the standard online calculation tables (for example, //www.kaeser.ru/Online_Services/Toolbox/Air_receiver_sizes/default.asp), the desired parameter is determined. For example, with an initial air flow rate of 0.1 m 3 /min, a peak load duration during operation of 5 minutes, an allowable pressure drop of minimum / maximum 3/4 atm, optimal volume the receiver tank will be 500 liters.
This method is focused on the time it takes to completely empty the receiver. There is also a simplified, tabular method that correlates the volume of the receiver with the power consumption of the compressor. The ratios used in practice are as follows:
- For a compressor with a power of up to 5 kW - up to 100 l;
- For a compressor with a power of up to 10 kW - up to 300 l;
- For a compressor with a power of up to 20 kW - up to 550 hp.
Intermediate values are recommended to be obtained by interpolation. There are also experimental dependencies. For example, the capacity of the receiver tank cannot be less than the capacity of the compressor in 8 seconds of its continuous work. In particular, with an air consumption of 400 l/min by the compressor, the volume of the tank will be at least:
V \u003d (400 × 8) / 60 \u003d 53.33 (l)
Do-it-yourself additional receiver for a compressor
A number of works in household or small workshop require increased consumption compressed air, with which a conventional household compressor can not cope. One way out is to install an additional receiver for the compressor. Such a device can be purchased (the issue price, depending on the volume, is 12,000 ... 15,000 rubles), or you can make it yourself. Moreover, most of the proposed models of receivers are focused on standard compressors, which explains high price on them.
Depending on the calculated volume (it is easier to connect an additional receiver in series with the main one), it is possible to adapt a cylinder from liquefied gas or a fire extinguisher.
The cylinder for a homemade receiver is first cleaned of gas residues. To do this, the inlet valve must be removed (the use of a power tool is unacceptable, since gas residues may remain in the cylinder). Further, the container is filled with water, and settled during the day. After that, tubular splitters for hoses can be welded into the cylinder, although screw plugs with reliable gaskets can also be provided. The tank is painted with weatherproof paint.
A pressure gauge can be installed in the finished receiver, and a steam trap can be installed in the bottom of the cylinder. The size of the steam trap must be matched to the compressor capacity, operating pressure and connection threads. Prices for steam traps - in the range of 2500 ... 3000 rubles.
The finished additional receiver, mounted for stability on a tripod welded from a steel bar, has the appearance shown in the photo.
When using the considered device, the following must be considered:
- Installation of a steam trap on an additional receiver is mandatory;
- Before loading, it is necessary to check the compressor motor for the possibility of its operation with an additional receiver. To do this, turn on the compressor drive at idle, and use a flow meter to check the actual parameter drop during a long (more than 20 min) turn on. If the pressure does not fall below the minimum set, then the additional receiver can be used;
- When the pressure drops, it will be necessary to reduce the desired value of the on-time from the standard 75 ... 80% to 50 ... 60% (at lower values it is not advisable to use a home-made receiver).
Strange as it may seem, but a gas cylinder receiver is a thing in demand and important for many people. The receiver itself should be a certain container, which was originally created to store gases or liquids under pressure in it. The receiver cannot be made from plastic containers! An excellent and only true option, as well as completely safe, is a receiver from a 50 l gas cylinder, since the container itself is able to withstand heavy loads.
How to make a receiver from a gas cylinder
In order for the work to go right and the final product to be completely safe to use, it is very important to know how to make a receiver from a gas cylinder before starting work. The first thing that is required is to prepare the container itself, tools and stock up on time, since it may take several hours to manufacture the receiver according to all the rules.
An important element is the pressure switch, since it will regulate it in the finished unit. Also among the spare parts should be a pressure gauge designed for 10 atm. The gas cylinder has been used as a receiver for more than a year, so you can find a lot on the Internet detailed plans and drawings for its creation, if there is no experience in such work yet.
When all the tools are assembled, the next stage comes - assembly, namely, carpentry work. First of all, it is necessary to prepare the cylinder, unscrew or cut off the valve to reduce the pressure inside, then rinse with plenty of water to remove the remaining contents from the walls. Thus, the future receiver from the gas cylinder is ready for further work. After the balloon is prepared, you will need to find a wooden base, suitable if there is nothing else and ordinary chipboard. After that, two legs will need to be welded to the balloon, just for the subsequent convenient fastening of the balloon to the prepared wooden base.
In order to create a receiver from a gas cylinder with your own hands, you will need to clean old paint to clean rust, if any, as it worsens the condition of the cylinder, and hence its reliability. Assembling and debugging the design as a whole can take several days, so it's best to immediately see what the finished receiver looks like from a gas cylinder, photos can also be found on the net.
It is important to note that if everything is done according to the rules, then large quantity It will take time not to manufacture the receiver, but to search for the parts and components necessary for work. It is necessary to purchase such parts and assemblies as check valve, electrocontact switch and pressure regulator, preferably with water separator and filter. A well-assembled receiver for a compressor from a gas cylinder will serve for a long time and will not cause concern to the owner.
A non-return valve is a necessary thing, as it allows the motor to start quietly and smoothly even if there is high pressure inside the system. If you do not install it, then the design will simply buzz and not start. This behavior can cause overheating of the entire structure, so it is important to pay attention to this. Special attention. An electrical contact relay allows you not to experience problems with turning the unit on and off when certain values of air pressure are reached, a pressure regulator with a water sump, as well as a built-in filter and pressure gauge, allows you to set the desired operating pressure and not worry about the purity of the existing air flow.
Thus, a receiver from a gas cylinder will require special knowledge and skills from a person, but it will ensure the uninterrupted operation of the unit, provided that it is assembled in accordance with safety standards and requirements. If your own knowledge is not enough or there are doubts, it is better to choose a good training video, or consult with a specialist to avoid trouble in the process of using it. robust design. Attention to detail is the key to success, in relation to the receiver this truth is also true and must be carried out with particular care.
It is not necessary to buy a compressor for painting work or pumping wheels - you can do it yourself from used parts and assemblies taken from old equipment. We will tell you about the designs that are assembled from improvised materials.
In order to make a compressor from used parts and assemblies, you need to be well prepared: study the diagram, find it on the farm or buy some parts. Consider a few options for independent design of the air compressor.
Air compressor from refrigerator and fire extinguisher parts
This unit runs almost silently. Consider the circuit future design and make a list of necessary components and parts.
1 - tube for filling oil; 2 - starting relay; 3 - compressor; 4 - copper tubes; 5 - hoses; 6 - diesel filter; 7 - gasoline filter; 8 - air inlet; 9 - pressure switch; 10 - cross; 11 - safety valve; 12 - tee; 13 - receiver from a fire extinguisher; 14 - pressure reducer with pressure gauge; 15 - moisture-oil trap; 16 - pneumosocket
Necessary parts, materials and tools
The main elements are taken: a motor-compressor from a refrigerator (preferably made in the USSR) and a fire extinguisher cylinder, which will be used as a receiver. If they are not available, then you can look for a compressor from a non-working refrigerator in repair shops or at metal collection points. A fire extinguisher can be purchased on the secondary market or you can bring friends to the search, at work who may have decommissioned OHP, ORP, DU for 10 liters. The fire extinguisher must be safely emptied.
In addition, you will need:
- pressure gauge (as for a pump, water heater);
- diesel filter;
- filter for gasoline engine;
- pressure switch;
- electric toggle switch;
- pressure regulator (reducer) with pressure gauge;
- reinforced hose;
- water outlets, tees, adapters, fittings + clamps, hardware;
- materials for creating a frame - metal or wood + furniture wheels;
- safety valve (to relieve excess pressure);
- self-locking air inlet (for connecting, for example, to an airbrush).
Another viable receiver came from an automobile tubeless wheel. Extremely budget, although not very productive model.
Wheel receiver
About this experience, we suggest you watch a video from the author of the design.
