The rotary drum and cochlea washers are suitable for processing small metal parts in bulk due to the moderate rotation speed of the drum. This low speed allows the parts being washed to be continuously in motion under the action of the washing showers, which guarantees an excellent cleaning of the surface of the metal parts.
It is a technology that offers optimum results at competitive prices when parts that can touch each other continuously without damage are to be treated.
The operation of the drum and cochlea washers is based on a tunnel with an internal auger, the size of which is determined according to the size of the parts to be treated. This auger rotates at an adjustable speed, transporting the parts along the entire length of the equipment.
Depending on the contaminant contained in the parts and the type of metal to be washed, the machine can be equipped with different stages. Let’s take two different applications as examples:
- For a brass part containing cutting oil, an initial cleaning with hot water is carried out followed by a drying process.
- In case the part to be treated contains oil, a three-phase process is designed: an initial degreasing phase, a second rinsing process and finally drying.
All phases of the machine are temperature controlled by a digital thermostat.
A mesh filter is installed in each treatment tank to retain shavings and small particles so as not to affect the washing of subsequent parts and to prevent clogging of the sprinklers during the spraying phase.
Specific equipment for parts degreasing
In a metal parts degreasing equipment, the first three or four vacuums maintain the parts with complete immersion. Subsequently, they pass through an area equipped with sprinklers that spray the degreasing product with a certain pressure on the parts, which are permanently in motion. Next, a rinsing phase is carried out to eliminate the remains of the degreasing product and finally the parts are subjected to a drying process.
Normally the degreasing tanks are connected without any mixing of products so that it is possible to regulate their levels when necessary. For this reason, the level detector, which is activated in the degreasing tank, will automatically pass water from the rinsing tank to the degreasing tank and back to the rinsing tank by means of a solenoid valve that will receive water from the mains.
When designing an installation, it is important to adjust the dosage of the material to be washed inside the cochlea. The parts in each loop must have sufficient space so that degreasing, rinsing and drying air can reach all parts of the parts.
Drum and cochlea washers can also be used for the application of phosphates with all their corresponding phases, as well as for the impregnation of a product on the parts, since there are complete immersion machines.
In addition to the standard machines, Coniex supplies all types of washing machines for any process, and can even combine spraying and immersion phases simultaneously in the same machine.