Cement mixers for the "hard" solution: how to make your own hands

In the article the answer to the question, what is more profitable: to buy a mixer or forced to do it yourself

Compulsory mixer used to prepare "rigid" mixtures with a minimum content of water. Forced to buy prefabricated concrete mixer - not a cheap pleasure. Depending on the volume of the tank, the engine power, performance and bloat, their prices start from 80-100 thousand. rub. For the average samostroyschika it - very expensive. How to be, if you need a reliable forced mixer, and not shaky "Chinese" cement mixer gravity? Make it your own by fotoinstruktsii of this article.

Content:

• Construction of the forced action mixer for 250 liters
• How much is homemade compulsory mixer
• What details need to force mixer driven by an internal combustion engine
• Video work homemade forced mixer

Compulsory mixer: constructive

sdi1759

user FORUMHOUSE

I need a compulsory mixer type. I want to cook in it of 70 m³ of concrete. Calculated that if you buy a factory mixer, then, at a price of 80 thousand. rub., it will pay for itself in such a volume. But will have to pay for shipping. On the site there is a three-phase power supply system at 380 V. On reflection, I decided to make a forced mixer with a gasoline engine with their own hands. Dimensions and constructive:

• tank diameter - 940 mm;
• Tank height - 500 mm;
• full volume - 0.34 m³;
• working volume - 0.226 m³;
• the thickness of the tank bottom - 8 mm;
• the thickness of the walls of the tank - 6 mm;
• Tank gain - "belt" of the square tube.

Then I figured estimates for the production of the forced mixer.

In the photo below industrial design forced mixer.

The cost of a self-made compulsory mixer

Note: The price in the region of residence sdi1759 for 2017.

• Cut the metal strip to size 1000h1500 mm. One sheet will suffice to manufacture the cage to the tank. The second sheet goes to the bottom of the mixer. Metal Price:
• The sheet thickness of 6 mm - 3600 rubles .;
• Sheet 8 mm - 5800 rub .;
• metal roll forming and tack welding - 3400 rubles .;
• Cut from a metal sheet circle diameter 950 mm - 740 rub .;
• More should be cut in the bottom of the window to unload the mixture.

sdi1759 calculated by making the tank bottom and a wall thickness of 8 mm and weighing about 150 kg, it will cost to him 15800 rub. If uzhatsya - to make the walls of the tank of the mixer of steel 6 mm thick, and put on the bottom 8 mm + strengthening the pipes, the tank price weighing 120 kg, about 14600 rub. Delivery at his own expense.

More will need:

• Worm gear - 5000 rubles.
• Gasoline engine with 6.5 hp (I was available).
• Turning - 5-7 thousand. rub.
• Additional costs - 5000 rubles.

in total: About 33,000 rubles.

sdi1759

I sit and think. Make the tank from a metal thickness of 8 mm or 6 mm? The difference is small money. Is it worth to save on metal? Saw an industrial mixer made from "six". It works for more than two years in the production and not broken.

Steps of manufacturing a self-made compulsory mixer

1. Check for a metal tank.

sdi1759

At the factory I was told about rolling technology. I learned that from the sheet metal have to take 30 cm. Outplayed order. Tank is made of "six", and the bottom of the "eight". The costs are as follows:

• Plasma cutting of metal - 750 rubles.
• Metal Rolling 2h1.5 6 mm and 8 mm 1h1.5 m with all services - 14,700 rubles.

Tank Height 60 cm. Now the burning question. What to buy reducer to drive the mixer? Required reduction gear ratio of 1 to 50 to get 30 rpm.

2. Assembling the mixer.

• User detail brought to the tank car.

• I bought reducer for 3500 rubles.

• Examples of parts of the tank.

sdi1759

The portal I asked. Do not it be easier to cut the desired piece of metal from the pipe, rather than collecting tank in two pieces. I'd like to, but the hand is not a pipe. Do not b \ y, is not new and buy a whole - to throw money. In my region of residence, you can easily find the spare parts from used cars and scrap metal, old farm machinery - a problem. Ideally - to order the production of the master tank for 5-6 thousand, so as not to suffer the most. But we have such kinds of work no one does. Therefore I do myself.

• sdi1759 other welded tank.

Rate welds.

• I marked out and made the gate.

At this stage, the concept has changed little mixer. I bought another gearbox for 3000 rubles. another gear ratio, to be placed under the tank. Along the way, he completed the gate.

• sdi1759 I ordered from Turner shaft mixer for 5000 rubles.

• Further sawed in the tank bottom shaft opening.

• Then welded shaft. Strengthened its flange. Welded edges of rigidity and damper set.

At the finish work welded to the tank, "feet." Area under installation of the gear unit. Pulley set and collected site: shaft gear.

• sdi1759 I found the half coupling onto the shaft.

Reducer close-up, scrubbed conservation grease.

sdi1759

Sleeve seated on a shaft on the key d8 mm with a through bolt M10. Interconnected coupling halves joined M12 stainless steel bolts.

• The finish assembly of the mixer.

• sdi1759 installed engine.

Ready unit.

Demonstration of the mixer.

Practical experience forced mixer

sdi1759

Knead the first cubic meter of concrete. Everything works as it should. Interfere with 100-120 liters of concrete. The engine pulls at idle. Disadvantage - bent one blade. I will strengthen its hex.

Volodaris

user FORUMHOUSE

look how my mixer compulsory. I put blade floating type and now he kneads any fraction. Previously I made stationary blades. Break them. Now there is no.

sdi1759

I grit maximum third fraction. The blade is only slightly bent. Small could not stand the load. In an extreme case, srezhu blade and put two extra.

Members appreciated the home-made FORUMHOUSE sdi1759 and asked questions:

Andreysss

Member FORUMHOUSE

 A more concrete can be hard to knead?

sdi1759

Can. Mixer knead well and dry blend and semi-dry too.

2mike

Member FORUMHOUSE

Have you tested on a full load of mixer? If the tank is 300 gallons, what is the maximum yield of the mixture?

sdi1759

Maximum prevented 200 liters of concrete. Only this amount did not I osvoyu, therefore, make a mixture of 100 liters. More revealed a flaw gate. Too big. I will reduce it twice.

conclusions

Make homemade compulsory mixer harder than produce concrete mixer from the motor from the washing machine drum and 200 liters. You will need:

• three-phase motor 4-7 kW engine capacity;
• an electrical network 380;
• thick metal;
• reducer;
• tokarka;
• tools - welding inverter, a Bulgarian, a powerful drill, electric jigsaw.

This will lead to higher prices for the mixer. Add to the cost of the time spent on the production of home-made. Therefore, ask yourself the questions:

• For what work you want that kind of a forced mixer?
• You will become a hinder on it "tough" and "superrigid" concrete?
• How long you will use the mixer?
• Do you have the strength, experience and home-made tools to bring to mind?

We recommend you topic - Concrete with your hands: the calculation of proportions, reinforcement, formwork.

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