Small Household Submersible Pump manufacturers teach you how to build a miniature electric pump (for pumping water). Pumps from China Submersible Pump Factory can be used in small applications or as entertainment tools. One of the best things about this version is that almost everyone should be able to use the required materials because they are not special parts. Before we start, I would also like to mention that I used a very small, weak motor, so if you want the pump to have more pressure, you only need to use a larger motor.

　　The materials required for this construction are:

　　Small motor. (You can buy it online, in a hobby shop, or from toys in a dollar store) Plastic candleholders (Gatorade bottle caps can also be used) Thin hard plastic (plastic food containers) Lots of hot glue

　　Step 1: Make the impeller

　　In order to start building, we will start by obtaining the pump housing. For this, we need plastic candlesticks. Next, we need to manufacture the impeller. The bottom of the impeller will be made of plastic. The plastic I use is food packaging. I used a compass to draw a circle slightly smaller than the pump casing on the plastic sheet. Cut a piece of plastic and paint it red to see it better. After cutting it out, I also drilled a hole in the center so that I can install it on the motor later.

　　Step 2: Make the impeller blades

　　Next, we need to make the blades of the impeller. For this, I cut out a long and thin plastic sheet and cut it into 4 small pieces. I pasted these four smaller parts onto the newly made disk. The four smaller parts can then be pasted onto the disk.

　　Step 3: Install the motor

　　Next, I drilled a hole in the bottom of the pump casing. The shaft of the motor needs to pass through this hole, so the drilled diameter should be larger than the diameter of the motor shaft. Next, I glued the glue to the surface of the motor and pasted it to the bottom of the pump housing (candle holder). Be sure to seal the holes on the surface of the motor to prevent water infiltration.

　　Step 4: Install the impeller

　　After this, we now need to put glue between all four blades and then paste it to the shaft of the motor. After the glue is dry, you should rotate the finished impeller to ensure that it does not rub against the sides or bottom.

　　Step 5: Close the pump housing

　　Next, we will need to seal the pump housing. To this end, I found the shell on the plastic board and cut out the plastic ring. Before installing the plastic ring, drill a straw-sized hole in the plastic ring. Also, drill a hole similar to a suction pipe in the size of the pump casing. This will serve as the water inlet and outlet. Next, I glued a straw to the inlet and outlet. It is important that the glue is always spread so as to maintain water tightness. Finally, I glued the round plastic sheet to the front of the pump housing. The blades of the impeller should be at a certain height so that it does not touch the circle of the leading edge. If the height of the impeller is too high, it should be trimmed until it fits. The front part of the casing should be glued so that after the suction tube is sealed, the casing of the pump will be airtight. After completion, you can test the pump.

　　Step 6: First test

　　When testing the pump, make sure to suck in water as it must be filled with water to work properly. As you can see, the pump is working properly. Larger motors or placing the pump horizontally instead of vertically will improve performance. In the next step, I showed another modification I made to make the pump work better.

　　Step 7: Modify

　　I found that the finished design works first, but it may be improved. I decided not to let the water leave perpendicular to the shell but tried to make the water tangent to the shell, which should be a more natural method. For this, I only need to open the side hole and cut off a part of the bottom of a straw. After completing this operation, I used a lot of glue to stick it on, and I can test it again

　　Step 8: Final test

　　The final test seemed to be better, but I found that a larger motor is likely to bring better results. I also realized that I was comparing my project with a pump where the water source was on the same level as the pump, and my water had to raise the water a few feet, which meant that my well had to do more work. I think if I rotate the pump horizontally instead of vertically.