How to make a solar-powered pump for watering your garden

How to make a solar-powered pump for watering your garden

I once bought a centrifugal pump for watering my garden in order to pump water from a nearby well. And I thought, why run a 220 V network to the well and waste electricity when you can convert the pump to low-voltage power and power the entire structure from solar panels or a battery.
You can take such a pump with you anywhere and pump water even from a well, even from the nearest river or lake. And what is most important: the pump will not lose its functionality and can be powered from either 220 V AC or 24 V DC.

Modification of the centrifugal pump


Here is the 380 W surface centrifugal pump itself, clamped in a vice.
How to make a solar-powered pump for watering your garden

Remove the protective grille and impeller.
How to make a solar-powered pump for watering your garden

Next we will connect to the shaft; for this we need to prepare the driveshaft. You can easily buy it at any car dismantling site. The steering cardan fits perfectly. We cut it off on all sides to the fork, and instead of the shaft, we weld a bushing on each side.
So that the diameters of the engine shaft and the internal diameter of the cardan now coincide, we put a bushing on the engine shaft.
How to make a solar-powered pump for watering your garden

Now we put the cardan on the shaft, on which a hole was previously made on the side on one side. We drive a self-tapping screw into it to secure the assembly itself. Of course, from a mechanical point of view, everything is not so correct, but everything holds up reliably.
How to make a solar-powered pump for watering your garden

Now let's take a DC motor. You can buy one at Ali Express - .
How to make a solar-powered pump for watering your garden

The power compared to an asynchronous pump motor is almost the same - 350 W, with a supply voltage of 24 V.
We connect it to the other end of the cardan. To do this, a bushing with an external thread was welded onto the motor shaft, and onto the cardan with an internal thread.
How to make a solar-powered pump for watering your garden

Now we just screw one to the other.
How to make a solar-powered pump for watering your garden

We fix the DC motor on a wooden stand.
How to make a solar-powered pump for watering your garden

Now the common shaft can rotate any of the electric motors. We connect power from the solar battery and check the operation of the pump.
How to make a solar-powered pump for watering your garden

Installation


The soot is located almost next to the beds.
How to make a solar-powered pump for watering your garden

Two solar panels with a total power of 400 W and a voltage of 24 V will be used for power.
How to make a solar-powered pump for watering your garden

For frequent movement they are mounted on a wheeled trolley.
We take the pump and lower ourselves into the well.
How to make a solar-powered pump for watering your garden

We connect the inlet and outlet pipes.
How to make a solar-powered pump for watering your garden

How to make a solar-powered pump for watering your garden

Connect the power and isolate the outputs. Then, to start the centrifugal pump, unscrew the plug and fill in water for the first start.
How to make a solar-powered pump for watering your garden

As soon as the pump “grabs”, we screw everything back. Water flowed through the pipes. To reduce vibration, the entire structure was mounted on a piece of foam rubber.
How to make a solar-powered pump for watering your garden

Next, we go and water the garden as much as necessary.
How to make a solar-powered pump for watering your garden

Conclusion


This is an excellent solution: modify the pump to operate on low-voltage power and make it transportable. Take it with you to the dacha, and if there are no solar panels, use batteries.

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Comments (4)
  1. Guest Yuri
    #1 Guest Yuri Guests June 5, 2019 08:11
    1
    Brilliant! Is a solar panel + motor + gimbal cheaper than a piece of cable? The universal joint, which the author calls a shaft, will quickly break the front bearing of a 24V motor. But you can’t replace it because of the welded bushing, the motor is for spare parts. The 220V motor was left without cooling (impeller), and the foam vibration damper was impressive. In short, a masterpiece from all sides!
  2. Konstantin
    #2 Konstantin Guests 25 June 2019 17:35
    1
    Good afternoon, why such difficulties when you can do it more elegantly - use a submersible fuel transfer pump, non-removable filter, 12V, D38", a very small solar battery for 10-20 W. and a battery 12-24 Ah, a timer from aliexpress is here too It won't be at all superfluous. I've been using this design for the second year now, the pump dies - so a new one costs a penny.
  3. Guest Igor
    #3 Guest Igor Guests 7 January 2020 13:55
    1
    Then it’s easier to make a homemade wind pump
    And cheaper and more efficient
  4. Sergey
    #4 Sergey Guests 25 October 2020 22:52
    0
    A 400W solar battery costs from 10 thousand Russian money....For this amount it is easier to stretch several hundred meters of cable, and at the price of electricity per 1 kW, the remaining money will be enough to water the garden through the meter for a very long time...