Manual concrete mixer: construction design recipes, marking,

12-01-2018

Building

Mixing cement mixture is a rather laborious process that takes a lot of energy. And if there is no opportunity to purchase or rent a concrete mixer, and the volume of work is quite large, it's time to think about the mechanization of this process. A good option is a manual concrete mixer, and we will tell you about this simple device.

Kneading a large amount of mortar is not an easy task, so you just can't do without ancillary tools.

Theoretical part

First of all, let's get acquainted with some theoretical aspect. This will allow to better understand some of the features of the unit.

Why not use a drill

Many people probably ask this question. At first glance, it seems that it is much easier to fix a special nozzle on the drill and use it as a mixer.

However, this method has certain disadvantages:

Any power tool is not designed for continuous operation. In this mode, the device simply breaks quickly. If you regularly take breaks, you may not have time and the solution will start to clutch early.
In order to thoroughly mix the mixture, a working tool is required to be constantly driven from side to side. Drill has a decent weight, so this procedure will be extremely difficult.

For a small portion of this tool is quite fit

This method is almost impossible to stir the solution entirely. In hard-to-reach places, components will remain unmixed. The result will be a serious amount of marriage.
Finally, this method will entail a large number of splashes.

However, if we are talking about a small portion (several buckets), then it is better to use a construction mixer and a bucket. However, most often there is a need to prepare a much larger amount of the cherished mixture. What to do in this situation?

Only one way out - to use a more advanced device. Such is a concrete mixer.

Work principles

If you are interested in such a device, you probably want to know how this miracle works.

There are many principles of work, but three of them are actively used:

In this photo you can see a good example.

Gravitational: the container with the solution is overloaded, as a result it falls on itself, creating the effect of mixing. This method is suitable for small volume. In addition, it is worth noting that the concrete is obtained in satisfactory quality.

Interesting: this principle is not being applied on an industrial scale.

Vibrating: the container is stationary, and a special mixer provokes the compression and mixing of the mixture. As a result, it mixes very well, and the solution is very dense. The only drawback of this method is the huge energy costs, so it is used only in cases where perfect quality of the mixture is required (for example, when building dams).
Forced mechanical: recalls the method already described with a drill. However, it is often combined with others: for example, when the mixer works in a constantly rotating tub.

How to mix concrete by hand or with a power tool - you decide. We will give you some recommendations for the manufacture of hand-held equipment.

These familiar cars are the most prominent example of a combination technique.

Making recipes

The instructions below will tell you how to create such a device yourself. There are many options, but we consider the most primitive. It is perfect for private use, that is, where large volumes are not required in a short period of time.

Material search

The first step should always be calculations. Such a measure will allow to achieve the desired result without making mistakes.

So, you need to do the following:

Найти емкость (это может быть любая бочка объемом 100-250 литров, главное целая). В идеале у нее должна быть «родная» крышка.

Important: Assess the state of the metal, if severely affected by corrosion and rust, then it is undesirable to use it. Otherwise, there is a high probability of cracks that will put a fat cross over all the efforts.

If the cover was not found, then it will have to cook yourself. Therefore, you need to find a sheet of metal of suitable size.

You can paint the barrel. It will prolong her life

You will also need to find a few pipes, pieces of reinforcement or corners. These elements are needed in order to create a frame on which the desired device will stand.
You will also need a welding machine. Nowadays, these devices are inexpensive, have a low weight and operate from a standard 220-volt network. Therefore, it is reasonable to rent or even buy it.
Do not forget about the grinder. Manually sawing metal - a real hard labor. Stock up on a few disks, because these elements quickly become useless.

Markup and validation

Raw materials and tools are ready. Before starting work, you need to check everything and make some markup.

So, do the following:

Once again we check the barrel, because in case of its defect the hand-held concrete mixer just will not work. It is advisable to tap in order to ascertain its strength.
Further inspection should be subjected to the elements of the frame (for the presence of rust and damage, because they will take a huge load) and tools.

Industrial model of concrete mixer, principle of operation - manual

Next, you need to mark the center on the bottom of the barrel and on its lid. At this stage it is impossible to make a mistake, two points should be located strictly on one line.
Also required to identify the installation location of the frame. They may be different, depending on the design chosen.

Tip: check the tightness of the container at this stage. To do this, pour water to the brim and inspect it for leaks.

Welding

Now is the time for more responsible and complex processes. Remember that at this stage the cost of the error is very high.

So, you need to do the following:

We drill holes in the center of the bottom and cover. Its size should fit the intended frame.
Next, weld the flange with the shaft in the center of the bottom. From the outside it will need to fix the bearing.
The flange with blades must be welded to the cover. These elements will stir the mixture during rotation of the handle. They must be at least three.
Then you will need to weld the rack. You can do this in the form of the letter "A". Also allow the option of installing the wheels on them, which will allow you to move the device freely.

You can use this curiosity scheme. This design will be easy to move from one place to another.

In general, at this stage you will need to show a little imagination and artistic skill. You can also use ready-made schemes, of which there are a huge number. There are no special instructions on the form and location of the racks.

Completion

It is time for the final chord.

The exercise will require the following:

Cut a hole of at least 35x35 cm in the side of the tank. It will be necessary in order to load the initial components and pour the finished mixture.
Cut should grinder. At the same time, be careful not to damage the wall itself.

Note! The narrower the disc, the more dense the conjugation of the wall and the hatch will be.

Cut the element should be put on the loop. The usual door fit. In this case, the holes should be treated with any sealant in order to prevent leakage.
To the part of the barrel where the blades are located, weld the handle. It should be long and as strong as possible (serious loads will act on it).

Design improvement

If funds allow, you can purchase a vibrator that will provide excellent solution quality.

If there is a desire, then you can make a kind of upgrade of this design. This need arises when it comes to large portions of the solution. Primitive equipment will require a lot of manpower.

It is possible to make a conventional mixer vibrating. To do this, you need to attach a perforator with a percussion mechanism. He will undertake the most time-consuming part of the work.

However, quite often such a device is not very effective. This is due to very popular errors.

We want you to learn only from the mistakes of others, so we will give them for you below:

Incorrect tank shape. It must be round, not wide and have great height. Ideally, the size of the vibrator should be several centimeters smaller than the radius of the tub.
Flat vibrator. Remember that you cannot use, for example, a metal sheet as a vibrator. It should have a curved shape (an example is shown in the image below).

Such a vibrator will provide high-quality mixing.

Too large vibrator. Remember, the less power perforator for concrete, the smaller must be the diameter of the disk. So, for example, with a power of 1.3 kW (the most popular indicator today), the disk should have a diameter of about 25 cm.

Обратите внимание! Если не соблюсти данное указание, раствор не будет «раскачиваться», то есть не перемешается должным образом.

Incorrect vibrator position. It should be placed strictly along the central axis of the container (otherwise, mixing will not be uniform). The distance to the bottom should be approximately equal to the diameter of the disk.

If you follow all the instructions presented above, you can become the happy owner of a fast and cheap mixer. With an average power of the perforator, 5–10 minutes will be enough for preparation (depending on the volume of the tub). In this case, you will not spend a lot of effort on this manipulation.

Experts recommend using the capacity of this form

Posleslovie

Вот вы и узнали, как создается ручная бетономешалка своими руками, но если вам не удалось понять всех тонкостей, то не переживайте. В представленном видео в этой статье вы найдете дополнительную информацию по данной теме. С его помощью вы сможете постичь все нюансы (см.также статью «Бетоносмеситель СБР: разновидности, особенности конструкции и принципы работы»).