How to make a pump from a motor. How and what can be made from a motor from a toy or household appliance Electric craft with a motor

The idea was born to make a mini fountain myself. The design of the fountain itself is a separate story, but this article will discuss how to make a pump for water circulation with your own hands. This topic is not new and has been described on the Internet more than once. I am just showing my implementation of this design. If anyone is too lazy to do it, then such pumps are sold on Aliexpress for around 400 rubles (price as of February 2016).

So let's get started. A bottle of nasal drops was used as a body. For those who are interested, I will write down the dimensions of some parts. So, the inner diameter of the bubble is 26.6 mm, depth 20 mm. A hole slightly larger than the diameter of the motor shaft is drilled in it on the back side, and a hole on the side for water outlet (4 mm in diameter). A tube is attached to it first with superglue and then with hot glue, through which the water will subsequently rise to the top of the fountain. Its diameter is 5 mm.

We also need a front cover. I drilled a 7 mm hole in the center. The entire body is ready.

A hole for the shaft is drilled in the base. The diameter of the base, you understand, should be smaller than the diameter of the body. I have about 25 mm. In fact, it is not needed at all and is used only for strength. The blades themselves can be seen in the photo. Made from the same box and cut to the diameter of the base. I glued everything together with superglue.

The engine will rotate the impeller. It was most likely taken out of some kind of toy. I don’t know its parameters, so I didn’t raise the voltage above 5 V. The main thing is that the engine is “faster”.

I tried another with a speed of 2500 rpm, so it raised the water column very low. Next you need to assemble everything and seal it well.

And now the tests. With a power supply of 3 V, the current consumption is 0.3 A in load mode (that is, immersed in water), at 5 V - 0.5 A. The height of the rise of the water column at 3 V is 45 cm (rounded down). In this mode, I left it in the water for an hour.

Passed the test fine. How long it will last is a good question that only time can answer. When powered by 5 volts, the water rises to a height of 80 cm. All this can be seen in the video.

Video

Separately regarding the noise. On land you can hear it quite well. Underwater at 3V complete silence The noise of the pump can be heard quite a bit. You can't hear him at all over the rushing water. So we can conclude that it is quite suitable for a fountain, and for others as well. I was with you SssaHeKkk.

Discuss the article HOW TO MAKE A PUMP FROM A MOTOR

Different motors have different quantities rpm per Volt and therefore, it is better to select them for a specific toy or specific use - those that are suitable for use as a wheel motor are not suitable for use with propeller and vice versa!

The first is a small motor with a diameter of 2.4 cm, it is great for use in homemade toys to rotate the wheels.

Buy an electric motor Can .

Here is an example of making a homemade tricycle using such an engine.

The second option is higher-speed and is designed to use a propeller as a propulsion device.

Buy an electric motor with a propeller Can .

Here is an example of making an airboat using such an electric motor with a propeller.

As you can see, you can make such a simple airboat in 20-30 minutes.

The third motor is equipped with a gearbox and can be used to mechanize toys with large wheels.

Buy an electric motor with a gearbox on a wheel Can .

The reduction gearbox is made of metal; it increases the torque power on the shaft and allows you to install this electric motor directly on the toy wheel.

An electrified toy will be slow, but will be able to carry fairly heavy loads and climb hills with them.

Set of 5 small electric motors.

Buy a set of electric motors Can .

Buying 5 pieces at a time results in a very good saving.

Here is an example of using such engines to make a simple machine with an electric motor.

Electric motor with gearbox and propeller

Buy an electric motor with gearbox and propeller Can .

Light weight and sufficient traction - this is how this set of an engine, gearbox and a pair of propellers can be characterized. This is why this kit is installed on medium-sized quadcopters.

This kit is perfect for airboats, airboats and flying airplanes.

Choose an electric motor for your homemade projects and make them together with your child!

Anna comments:

Hello! I came across your site while looking for the necessary mechanism to set our idea in motion! to what address email You can send us our mock-up so they can look at it and tell you what kind of motor is needed to “revive individual parts of our model!” Thank you very much in advance!

Make something useful out of useless children's toys or household appliances no problem for a master dreamer. And it’s good that many electrical appliances become outdated and break down. It makes no sense to send such things for repair - it’s easier to buy something new. And true “homemade people” are just waiting for this. They immediately have a whole bunch of ideas that require immediate implementation.

Second life of children's toys

There are times when a self-propelled toy breaks into pieces. Probably, in order to calm the child down, you urgently need to buy a new one? Not at all necessary. You just need to start the family process creative thinking. And to do this, remove the remaining usable parts from the broken machine along with the motor. Then collect all the toys in the house and choose the one that can be brought to life again. Probably, here you will need school knowledge in physics, chemistry and electrical engineering.

Repair of an old helicopter

Suddenly an old forgotten helicopter with an unusable engine and broken blades, which had long been lying on the mezzanine, caught my eye. He apparently waiting for my finest hour and now with pleasure showed off the blue and white sides with the half-erased inscription “USSR-0098”.

Such things must be handled carefully. The old man doesn't like fuss. You will have to carefully remove the remains of the large main screw by unscrewing several small screws. To get into the engine compartment, you need to remove the plastic battery box from below. The engine is held on by three bolts and, as expected, has two wires “plus” and “minus”, which are connected to the power switch through a microcircuit block. All this must be carefully unsoldered and unscrewed.

Having pulled the engine out to a white light, you need to inspect it and compare it with the motor from the car. The fact is that to create lift, 250 -270 rpm is enough. and power 1 - 2 watts. The difference in engine characteristics turned out to be small. Then you can safely install a fresh engine on the helicopter. And then go to the model shop for a brand new main rotor. When everything is ready, the repaired rotorcraft is tested in the presence of the entire creative family.

Modern children's helicopter models are repaired using the same scheme. Only now they are radio-controlled, and therefore you will have to fork out money for a control panel, on which the rotor speed and the speed of the helicopter depend.

New engine for toy car

In order to make a small children's car, you need: wheels, the car body itself, wires, a control panel, various electronic boards and a motor. If you have all this goodness, they begin to create a model. There is no need to look for the engine, since it is already there. The car body itself can be make it yourself made of wood or plastic and decorated to your taste. It’s good for those craftsmen who have a small 3D printer in their home that can build any shape of model.

Often the machine is made quite simply. They take a long-abandoned small children's car with wheels, disassemble it down to the screw and try to automate it using a ready-made motor. The following are used: glue, electrical tape, small gears from watches, gearboxes from old models and much more. And people for whom such fun has become a real hobby often achieve great success in making homemade motors.

When several new models of children's cars have been made and tested, all that remains is to do something generally useful. It is necessary to design a fan that would freshen the air and inspire new ideas. For this you need just a few items that are at hand. Namely:

a motor from a children's toy (you can't go anywhere without it);
CD discs, 6-7 pieces;
plastic stopper from a bottle;
cardboard tube approximately 10 cm high and 3 - 4 cm in diameter;
switch;
glue.

Manufacturing begins by cutting the disk into 8 equal parts from the edge to the center, not reaching approximately 1.5 cm from the hole. Then the resulting sections must be turned with one edge outward to form blades. The manufactured disk is placed on a plug, inside of which a hole is made for mounting on the motor.

Now they are making the leg and stand. A cardboard tube can easily pass for a leg. Wires and batteries will be hidden inside it. The remaining few disks can serve as an excellent stand. All this is glued well and painted in different shades. The fan is ready for operation.

Motorized ship

In order for the child not to hang out at the computer for days, he needs to be gradually accustomed to making various and interesting things that he can make with his own hands. Spring is coming, the streams will run, and you will need a small boat that will symbolize the coming long-awaited warmth.

Required materials The child will find it in his room. Here you need:

AA batteries 3 pieces;
polystyrene foam, electrical tape, glue;
motor from a CD drive or toy;
plastic cap from a lemonade bottle;
two pieces of plastic and iron washers.

The first step is to make a propeller. Slots for the blades are prepared in the cork. Flat ice cream sticks are the finished blades of the future boat. Then a hole is made in the plug to fit this screw onto the motor. All this is well glued. The power plant is ready.

Next, the shape of the ship is cut out of the foam. The front part of the boat is made triangular, a place is prepared at the stern for propeller with a motor, and in the middle you need a recess for batteries. Everything is connected and glued. They carry out tests in the bathroom and look forward to the first spring puddles.

Glider car

This is the most exciting toy created and tested by a child. On the ground, such a machine moves on wheels, and on the water on a special boat. It is made in 2 - 3 hours.

Required materials:

Do power plant. It is an engine with a propeller. The blades are cut using the neck of the bottle.

It should look like a rose. You can see from the photo that it is then screwed onto a plug attached to the motor.

Then they do chassis. To do this, use a skewer. They put plugs on it that serve as wheels. They attach everything to a square bottle, inside of which the batteries are placed. Connect with wires according to electrical diagram. The glider is ready. If desired, you can replace the plastic propeller with a more rigid one. Then the driving performance of such a car will be appreciated not only by the designer himself, but also by his friends.

Crawling robot

Manufacturing the robot takes only a few hours. It's not quite the robot people imagine. He does not walk, does not swim, but crawls chaotically smooth surface. This effect is created due to the unbalanced rotation of the motor rotor. For real cars this leads to a tragic accident, but here it only causes a smile.

So, to create a robot you need a motor and a battery. A small oblong piece of foam plastic or foam cardboard is placed on the engine axis and glued. This serves as a destabilizer. To the very tip of it attach a decorative light element.

A battery is installed on top of the motor and covered with various interesting details. They make his legs out of toothbrushes, his eyes out of balls, decorate him with colored wire or paper clips, and so on. When turned on, the engine vibrates significantly, which causes the toy to crawl chaotically.

Other ideas

In addition to all of the above, motors are used in homemade products such as mini drills and drills. Such devices do not require unnecessary parts. They have one task - to rotate the fixed drill.

To do this, select a collet or regular chuck on the motor axis that will clamp a small drill. Then solder the wires from the engine to the batteries through the switch. When the assembled device has successfully worked, it is placed in an antiperspirant case or some other case that is most suitable for a motor with batteries. This whole little device fits in the palm of your hand. The switch is always located under the thumb.

Such devices are necessary for radio amateurs for drilling holes V printed circuit boards. They can also be used by cabinetmakers who engage in fine volumetric wood carving. Only instead of a drill, they insert a finger micro-mill for sampling and grinding hard-to-reach places.

As you can see, with a little imagination and diligence, a child, with the help of his parents, can create truly original toys and other useful things.

Who would have thought that the simplest inverter could be made without the use of transistors, microcircuits and complex circuits. Last time I showed . As it turns out, this is not the only way to build an inverter. I'll show you how to convert electrical energy from 12 V DC to 220 V AC.

What will you need?

Step-up transformer. Naturally, before it worked as a buck, but we will use it in reverse. Such transformers can be found in receivers, electronic watches, and old tape recorders.

Inverter assembly

In fact, our circuit consists of only three parts connected in series to each other. This is a transformer connected to the circuit with a low-resistance winding (the high-resistance winding is the output of the inverter). Batteries - batteries or accumulators. And a switching element, in the role of which an electric motor will be used, which can be removed from broken children's toys.

Here's the motor itself. You can’t just insert it into the circuit - it won’t perform switching. We need to refine it.

To do this, we disassemble the motor.

We remove the back part, first bending the holders.

The anchor needs to be improved. This consists of disconnecting one winding from the contacts. To do this, we cut off the wires of any one winding.

We assemble the motor.

After such modification, the motor will not be able to rotate fully, since one winding will be turned off. But if you start it by hand, then the motor has enough power to maintain rotation. And the absence of one winding will periodically break the power circuit between the power elements and the transformer, where the motor is connected in series.
We connect it to the circuit.

We connect a multimeter to the output of the transformer. Then turn on the power. It happens that the motor starts on its own, but usually it doesn’t. Then we start the shaft by hand, turning it lightly.

The inverter is working! The multimeter readings jump from zero to about 250 V. This is normal, since this is a technical inverter for powering primitive devices.