How to make a receiver for the compressor with their own hands

A compressor from a gas cylinder with their own hands. Compressor with their own hands: installation options How to make a receiver from a propane cylinder

A compressor is an indispensable thing in the household, at home. This is especially true for those who have their own workshop and like to make things or do airbrushing. 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 their own hands.

You don’t need much for this, although you will have to buy something extra. Many people probably have an old refrigerator, which already does not fit into the interior. When it is still in working order, it is either sent to the country house where it sits and rusts, or to the trash. So, his compressor will be the main part of the future installation. As the receiver will be suitable normal old fire extinguisher or a small gas cylinder, which has served its time. is not such a problem, since virtually everywhere gasified. In a specialized store will need to purchase adapters, pressure switch, pressure regulator with a manometer, air filter and filter-water separator.

If the compressor with his own hands made from improvised materials, involves a receiver from a gas cylinder, you must remove the remains of propane. To do this, open the valve, put the cylinder upside down, then fill with water and turn it upside down again. After that you need to repeat the procedure with water, but leave the tank in its normal position. to let the rest of the gas escape. Then it is necessary to make outlet holes on the receiver: this is done by usual drilling and cutting in connectors and adapters. Compressor, your own hands mounted, assumes hose connections (oxygen, high pressure). The air reservoir is reworked by fitting it with a pressure gauge and an outlet for the work hose. In addition, the receiver must be equipped with a top platform, if the engine itself will stand on top. Such a compressor, self-made, will take up less space. And the wheels installed will give it maneuverability.

The principle of operation is simple. Its main part. the engine through which the air is pumped into the receiver. The air reservoir in its turn is fitted with a valve that prevents the air pressure from escaping. This generates the air pressure. The compressor is equipped with a sensor that prevents the pressure in the receiver, and the relay automatically turns off the motor. This helps to avoid explosions and consequently not only damage to the mechanism, but also to human health. By this design you can make different compressors, it all depends on the possibilities and ingenuity: the larger the receiver, the greater the power required by the motor. 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.

The electrical part consists of parts such as a starter, trip relay, terminal block connection wires. It is powered from a normal mains, which allows you to use the compressor in any place where there is an ordinary socket.

You do not have to buy a compressor for painting works or pumping up the wheels. you can make it with your own hands from used parts and components removed from old equipment. We will tell you about the designs, which are assembled from improvised materials.

To make a compressor from used parts and assemblies, you need to prepare well: study the scheme, find at home or buy some more parts. Consider a few options for independent design of the air compressor.

Additional receiver for the compressor with their own hands

A number of jobs in the home or in a small shop require an increased consumption of compressed air, which an ordinary household compressor can not cope. One of outputs is installation of additional air receiver for the compressor. Such a device can be purchased (depending on the volume, the price of the issue is 12000 15000 ), and you can make yourself. over, that most proposed models are focused on regular compressors, which explains the high price of them.

Depending on the calculated volume (connection additional receiver easier to perform consistently to the main) for the manufacture you can adapt the cylinder from a liquid gas or fire extinguisher body.

The cylinder under the homemade receiver is first cleaned of residual gas. To do this, the inlet valve must be removed (the use of an electric tool is not permitted, because there could still be residual gas in the cylinder). Next, the tank is filled with water and allowed to stand for one day. After that you can weld in a cylinder tubular connectors for hoses, though you can provide and threaded plugs with reliable gaskets. The tank is painted with a weather-proof paint.

A pressure gauge can be installed in the ready-made receiver and a condensate drain in the bottom part of the cylinder. The size of the condensate drain must be adapted to the capacity of the compressor, its working pressure and the dimensions of the connecting thread. for condensate traps are in the range of 25003000

Finished additional receiver, mounted for stability on the tripod, welded from a steel bar, looks like shown in the photo.

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When using the device considered, the following must be taken into account:

  • Installation of a condensate drain on the auxiliary tank is mandatory;
  • Before loading it is necessary to check up the electric motor of the compressor on possibility of its work with an additional air tank. To do this, start the compressor at no-load running and check the actual differential with a flow meter when the compressor is running for a long period of time (more than 20 minutes). If pressure does not fall below the minimum set, it is possible to work with an additional receiver;
  • In case of pressure drop it is necessary to reduce the desired value of ON time from regular 7580 % to 5060 % (it is inexpedient to use self-made receiver at lower values).

Communities Garage & Tools Tools Blog Extra receiver from a gas cylinder

Good afternoon) Option extra receiver for the compressor, quickly and without hassle))

When painting cars critically lacked air tank at the compressor in 24 liters, the amount of air was not enough for large areas such as the hood and roof. The solution was found rather simple. additional compressed air tank from gas cylinder of 50 liters)) Faucet on the cylinder dismantled and bought all the necessary connections))) Quick disconnects for the hose 270r. at a discount))

On the costs: Compressor Fubag 24l. available Cylinder. free Hose spiral 10 m. 347 p. Barrel pipe 3/4. 11 p. Socket 3/4. 24 p. Nipple adapter 3/4 to 1/2. 67 p. Nipple adapter 1/2 to 1/4. 2 pc 43 р. Faucet ball valve 1/2. 88 p. A set of fittings quickly. 270 p. TOTAL: 893 p.

Compressors using unnecessary things as receivers

If while choosing compressors and motors people craftsmen settled on the nodes from refrigerators and automobiles, then as air tanks anything is used. even champagne and Coca-Cola bottles (at pressures up to 2 atm). Here are a few worthwhile ideas.

If you have on hand a receiver from KrAZ, you can get a unit with minimum of efforts: all pipes are already screwed in.

Compressor unit with a receiver from KrAZ

If you have unnecessary equipment for diving you can use it in your work.

Receiver from scuba cylinders (assembly stage. without condenser battery)

Almost every cottager with a gas cylinder stove will have these unnecessary containers.

Compressors with receiver from a gas cylinder

If the hydraulic accumulator in the water supply system has a leaky “pear”, do not throw it away. Use it as a receiver by removing the rubber membrane.

Receiver from a hydraulic accumulator

Expansion tank from VAZ. inexpensive purchase, even if new.

Receiver is an expansion tank from a VAZ car

The next idea for air conditioner installers who have leftover Freon cylinders and split system parts.

make, receiver, compressor, their, hands

Freon cylinder as a receiver

One more viable receiver turned out from tubeless car wheel. Extremely budget, although not too productive model.

Receiver from a wheel

Air compressor from parts of a refrigerator and a fire extinguisher

This unit runs almost noiselessly. Consider the scheme of future design and make a list of necessary parts and components.

tube for oil fill; 2. starting relay; 3. compressor; 4. copper pipes; 5. hoses; 6. diesel filter; 7. gasoline filter; 8. air inlet; 9. pressure switch; 10. cross; 11. safety valve; 12. tee; 13. receiver from fire extinguisher; 14. pressure reducer with manometer; 15. moisture trap; 16. wall socket

Necessary parts, materials and tools

As the basic elements are taken: a motor-compressor from a refrigerator (preferably made in the USSR) and a cylinder of a fire extinguisher, which will be used as a receiver. If they are not available, the compressor from a dead refrigerator can be found in repair shops or metal recycling centers. Fire extinguisher can be purchased at a secondary market or involve in searches of friends, who may have decommissioned at work OHP, OVP, OU at 10 liters. Fire extinguisher cylinder must be safely emptied.

  • pressure gauge (as for pump, water heater);
  • Diesel filter;
  • gasoline motor filter;
  • pressure switch;
  • electric toggle switch;
  • pressure regulator (reducer) with a manometer;
  • reinforced hose;
  • water elbows, tees, adapters, connectors, clamps, hardware;
  • Materials for making the frame. metal or wooden furniture wheels;
  • safety valve (to release excessive pressure);
  • self-locking wall inlet (for connection to an airbrush, for example).

In addition, you will need tools: hacksaw, wrench, syringe, as well as FUM, “anti-rust”, synthetic motor oil, paint or enamel for metal.

Assembly steps

Before you start assembling need to prepare the motor-compressor and a cylinder of fire extinguisher.

Preparing the Compressor Motor

There are three tubes coming out of the motor-compressor, two of them are open (air inlet and outlet), and the third one, with a soldered end, is for oil replacement. To find the air inlet and outlet, briefly apply current to the compressor and mark the appropriate marks on the tubes.

make, receiver, compressor, their, hands

Further it is necessary to saw or cut off carefully the soldered end, being careful not to let copper filings get inside of a tube. Then you need to drain the oil inside and fill in with engine oil, synthetic or semi-synthetic, using a syringe. Seal the tube can be found by finding a screw of suitable diameter, which should be wrapped with FUM tape and screwed into the hole. Sealant can be applied over the joint. If necessary. paint the surface with enamel.

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Preparation of the receiver

Remove the shutoff and trigger valve (STV) from the empty extinguisher cylinder. Clean the outside of the tank of rust and dirt, and inside pour and hold the “anti-rust”. as much as indicated on the label of the product. Let it dry and screw on the cover with a hole from the safety valve. Screw adapter (if needed) into hole and fix a cross.

On the top socket mount pressure switch, on one side screw in a T-piece and connect the manometer, on the other side mount a safety valve or valve to bleed air manually (option). Where required, use adapters. If necessary. paint the cylinder.

Assembling the circuit

On the assembled frame (for example, a solid board on wheels or a structure of strong corners, pipes) mount the cylinder, and on it or nearby. the motor-compressor, laying a rubber gasket. Connect gasoline filter first and then diesel filter to incoming air pipe of compressor. This must be done if the compressor is intended to work airbrush to eliminate the slightest contamination of air. And since the filter for a diesel is more “thin”, it is installed after the petrol filter. If copper tubes lost their shape during disassembly, it is necessary to crimp them.

Connection of power supply is made through a rocker switch, pressure switch and starting relay. Protect all joints with tape or heat shrink. It is important to establish the starting relay in correct position, by an arrow on its cover, otherwise the device will not work properly.

tumbler; 2. pressure switch; 3. compressor starting relay; 4. relay position arrow; 5. relay connection to compressor winding; 6. compressor

Connect air output pipe from compressor through adapter to receiver inlet. After the manometer mount pressure reducer with remote moisture trap and behind it a hose with self-locking wall inlet.

The end result with proper effort works well and looks aesthetically pleasing.

High pressure compressor with their own hands

High-pressure compressor (HP) is made from a two-stage compressor head AK-150.

A 380 V motor with an output of 4 kW can be used as the drive. The motor shaft rotation is transmitted to the piston group shaft by means of an eccentric gear that also serves as the drive for the plunger-type oil pump. It generates an oil pressure of about 2 kgf/cm2.

Compressed air leaving the last stage flows through adapter with pressure gauge into the connection on the lower end of the 1 liter cylinder. There is also a valve for the condensate drain. The cylinder is filled with ground glass chips and serves as a moisture and oil separator.

Air comes out of the upper part of the cylinder through the finger fitting. The compressor is cooled with water. After 45 min. The water is heated up to 70 degrees Celsius. The author of this unit claims that during this time it is possible to inflate 1 cylinder of 8 liters and 2 cylinders of 4 liters to 260 atm.

Carpenter versus carpenter

“The wheelie bin is this way!”Kin-dza-dza”

The second stage of assembly. carpentry work. I took pre-made chipboard plates “out of stock” and screwed the furniture wheels to them on self-tapping screws, pre-drilled the slots for them with a thin drill bit (so they are screwed in exactly where they are and much easier). Be sure to ride on the newly made product in the apartment (you need to check the! =) ). you will get the attention and the interested reaction of your family (from the category of bad advice, and here I should leave a postscript “never repeat this on your own”). Since I made a two-level stand, the next step was to mark and drill holes for studs. Approximately in the middle of each stud bolt screwed on nuts, with a reserve measured peorized tape (so that to get a “bed” for the fire extinguisher) and mounted the latter on the place intended for him.Attention. All bitten-off places of the saw must be covered with insulation tape or other soft materials to avoid possible injury, or treated so that no sharp edges and burrs remain.

After positioning the fire extinguisher, I put two more peorized bands on top and secured with nuts. If you use a pre-prepared hydraulic accumulator as a receiver, then most of the small (5, 6, 8 liters, 8 l.) models of “horizontal” type, there are wonderful brackets-legs at the bottom and at the top. The lower ones can be bolted to the base and the compressor can be placed on the upper ones.

In my case, which I use as an example, the construction consists of two levels.The “second floor” of the structure needs to be prepared before installation. We find suitable holes on the compressor feet (there are many of them), and, keeping the geometry, we mark and drill them on the “second floor”. It’s ok if the holes are a bit bigger than the bolt diameter (I used M8), I used wide washers wherever needed. We mount the plate “second floor”, looking at the scheme we talked about in the first part. Let’s set up a compressor. In order to reduce vibration, it is necessary to provide some damping elements. I have used usual silicone gaskets for them and made some semblance of a shock absorber. Fix a compressor, do not forget to put washers.

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How do I attach the air distribution module to the air reservoir? If something is restrained, or just not well positioned, the design can be changed. After fitting. screwing. Connect the outlet of the compressor and the inlet of the air treatment unit with flexible hose, foamed tape and clamps. It is necessary to tighten the clamps well, providing tight adjacency of a hose. from the side of the compressor otherwise it can leak and splash oil, and from the side of the air distribution module. it can leak air accordingly.

For what a receiver in a compressor is necessary?

The receiver for the compressor performs several important functions:

  • Stabilizes air pressure that is supplied to the work area (fluctuations in pressure values are inevitable, since the unit cycle of any compressor includes a suction phase and a discharge phase).
  • Provide a supply of compressed air for some time in the event of interruptions in the work of the compressor, or when connecting to it the additional consumer.
  • Purification of air from accumulated condensate, because the high humidity of the air, which increases with increasing pressure, leads to intensive corrosion of steel parts of the compressor.
  • Compressed air storage in a receiver for a compressor results in a consequent reduction of overall system vibration, which in turn reduces the overall noise level, and reduces the load on the base of stationary units.

When you have to compressed air in especially large quantities, the standard air receiver may not be enough. For example, when sandblasting large surfaces and in order to avoid the need for a more powerful compressor, an additional air tank is often used.

The presence of a receiver also allows the periodic use of the compressor, t. е., reduce its electrical energy consumption.

Compressor air receiver is designed as a sealed tank with a specific capacity. Air tanks for portable compressors are used up to 50100 litres, for stationary machines up to 5001000 litres. Equipped with air filters, condensate drains and shutoff valves for connection to the main unit and to the working device that consumes compressed air. nozzle, spray gun, etc.

Container is made of corrosion-resistant steel, type 10ХСНД or 16GA2Ф. In exceptional cases, for low-capacity compressors, air receivers may be made of plastic or even high-strength rubber.

Receiver layout may be horizontal or vertical. The first one is used for portable units, the second one for stationary. Each type has its own advantages and disadvantages. In particular, vertical receivers have an easier way of removing condensate, while horizontal receivers are more compact and require shorter pipelines.

How to choose the optimum parameters of the receiver?

In addition to the capacity, the receiver for the compressor is also characterized by:

  • The limit values of air humidity.
  • Operating conditions (outside temperature difference of ambient air is allowed.15 40ºC and relative humidity not more than 75 80%).
  • Requirements for the place of installation (away from heat sources, combustible and explosive materials, as well as in an atmosphere contaminated with mechanical particles. for example, near circular saws).

According to the requirements of PB 03-576-03 (Rules for Design and Safe Operation of Pressure Vessels) it is also forbidden to operate receivers that have not passed the verification of serviceability of tank’s walls, as well as those having external surface defects. cracks, dents, traces of atmospheric corrosion.

Selection of receiver characteristics for the compressor is made as follows. Required compressed air consumption, duration of its consumption, minimum and maximum pressure values are set. Further, using standard online calculation tables (e.g. // determine the required parameter. For example, given an air consumption of 0.1 m³/min, a peak working time of 5 min, an allowable differential pressure of at least 3/4 atm, the optimum receiver tank capacity is 500 l.

This method is based on the time it takes to empty the compressed air reservoir completely. There is also a simplified, tabular method, which relates receiver volume to compressor capacity. The ratios used in practice are as follows:

  • For compressors up to 5 kW up to 100 liters;
  • For compressors up to 10 kW up to 300 liters;
  • For the compressor with power up to 20 kW. up to 550l.

It is recommended to get intermediate values by interpolation. There are also experimental dependencies. For example, the tank capacity of the receiver can not be less than the capacity of the compressor for 8 seconds of its continuous operation. In particular, at a compressor air flow of 400 liters per minute, the volume of the tank will be, at least:

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