Лучшее применение БЕТОНОМЕШАЛКИ

I made a serious mistake — I bought unwashed crushed stone. Fraction 0-18, seemingly a universal mix: sand, small pieces, and pebbles almost the size of a fist. But among all this goodness — clay. The most ordinary, sticky, viscous clay, which makes this material unsuitable for concrete. I have already used some of this “dirty” mass for paving stones, but about two cubic meters remained. It’s a pity to throw it away. I decided: I’ll wash it. It’s impossible to clean it manually, which means I need to build something more serious. I’ve tried to make a vibrating screen several times — all to no avail. Strong vibration gives a good result, but quickly destroys the structure. Something reliable and simple is needed. The solution came unexpectedly: modify a concrete mixer. For 150 euros, I bought the simplest model. The seller, smiling, offered an “alternative” — a plastic basin. "You take a shovel and mix," he said. But I didn't come for a basin. The drum of the mixer consists of two parts: the main part with a toothed crown and a neck, which is held on by six bolts. I dismantled the neck and decided to put a mesh drum in its place. The idea is simple: during rotation, water will wash out clay and sand through the mesh, and clean crushed stone will remain inside. First, I needed two steel rings. The inner diameter is 505 mm, the outer one is 570. It was not possible to cut them out solid - there was not enough material. I decided to make them out of halves and weld them. In total, I cut out six pieces. I worked with a jigsaw. Cooling, low speed, pendulum stroke - at zero. One radius turned out great, and the second - the saw was pulled to the side. Why - I did not understand. I had to saw by hand. First, I made cuts with an abrasive disk, and then finished them with a jigsaw. Four hours, one Bosch saw from the basic series - and it's done. The segments were not perfect, but after grinding and adjusting everything came together. I processed the inner radius with a stripping disk, the outer one - with a fiber one. I welded the rings. It turned out reliable. I took a stainless steel mesh - a cell of 5x5 mm, wire 1.25 mm. I welded the ends at a low current, about 20 amperes. I worked in the "green" mode on my TIG device - for beginners, when everything is done automatically, and I only adjust the current. I decided to make the shape of the drum tapered, like a nozzle. I also made the cone from a mesh. Surprisingly, the structure turned out to be quite durable. I assembled the entire frame from galvanized profiles. Welding was done partly with TIG, partly with a semiautomatic. Where there was steel - with a semiautomatic, where there was stainless steel - with TIG. I worked carefully: removed zinc, welded with a hood, but still inhaled. At night I woke up with a feeling as if the nuts were climbing back through my throat. I connected the mesh and the frame with pull-out rivets. Aluminum is a temporary solution. Later I bought stainless steel, and at the same time zinc paint. It does not just cover the metal - it protects it like an anode. If damaged, the zinc will "sacrifice" itself to protect the steel. Inserting the mesh into the drum was not an easy task. The mesh is elastic, I had to tighten it with a belt. Then I carefully placed it inside the drum and loosened the clamp. The flange of the drum turned out to be thinner than the factory one. I put washers under it, added threads - and everything fit perfectly. The drum was fixed with the required force. The runout is about two centimeters. Not critical. First run - on garden soil. Works! You just need to supply water and monitor the horizontal level. Then - a test on dirty crushed stone. It is poured into the far part and in a couple of dozen revolutions comes out clean, as if from the factory. Water goes into the ground, sand accumulates under the mixer - I collected it with a shovel and took it away. I washed almost everything in a day. I filled two basins of 130 liters with clean product in 40 minutes. Almost like a gym. With physical activity and results. Of course, it would be possible to make funnels, water drainage, automatic feed ... but this is a one-time use tool. And I'm glad that I made it myself. This is not just a drum - it is a small engineering victory. Thanks to everyone who supports me. Thanks to you, I can do such projects and share them. See you soon in the next video.