An indispensable attribute of the technical equipment of the aquarium is the compressor. This device serves to saturate the water with oxygen. The models available to everyone in the pet store have a fatal flaw - they emit noise that can interfere with rest at night. If you don't want to put up with insomnia, try building a silent microcompressor yourself.
Instructions
Step 1
The described device for blowing air into the aquarium will consist of an electric motor, an eccentric transmission and a pump.
Step 2
Slide the flywheel onto the motor shaft. Using two screws to the side of the flywheel, attach the plate with the axle in the middle (this will be the eccentric gear unit). Place the ball bearing and bushing on the plate axle. Attach a stem to the sleeve using a threaded hole, the length of which will be adjusted by the coupling. Now you can install a diaphragm on the end of the stem, tightening it on both sides with nuts.
Step 3
Reciprocating movements of the rod lead to a deflection of the diaphragm and a change in the volume of air in the working chamber of the pump. The compressor capacity, which depends on the magnitude of the current displacement, can be adjusted by changing the eccentricity of the plate within a few millimeters.
Step 4
The electric motor for the operation of the pump is suitable with a power of 50 W, with a rotation frequency of up to 900 rpm. Higher RPMs will require a crawler gear, which will complicate the compressor design and reduce system reliability.
Step 5
Turn the details of the pump, bushings and flywheel from duralumin on a lathe. To make washers, you need to knock them out of duralumin washers with a hammer using an anvil. It is convenient to make the diaphragm from a sheet of thin rubber, a thickness of 1 mm is fine.
Step 6
Mount the compressor on a wooden plank. If desired, you can cover the device with a suitable plastic cap to protect it from dust and mechanical damage.
