Cement mixer or cement mortar mixer is a type of tank used to transport concrete. Hence, it is also called a concrete mixer. Concrete is made from cement, aggregates (sand), water and additives and is widely used in construction. To obtain the best quality of concrete, it is mixed. The cement mixer rotates the concrete during transportation, which causes the concrete to mix. The rotation of the device prevents the concrete from settling and hardening while it is reaching the place of consumption. This tank is placed on a truck, trailer, rail wagons, etc. In fact, a cement mixer or concrete mixer is used to stir, mix and combine concrete. This device is available in different types with different volumes for making concrete.
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Cement mixer machine
Cement mixers are small mixers used for making concrete, which are also known as mortar makers, mixers, blenders, concrete mixers or concrete mixers. It is also called cement mortar mixer. This device is one of the newest and lowest-priced concrete mixing machines. Cement mixers are used to produce small and medium-sized concrete (30 cubic meters per day). The cement mixer machine is small. For this reason, the quality of the concrete made in it is very high. The operation of this machine is like measuring materials by human labor. This human labor must receive sufficient training in this field. When working with a concrete mixer machine, avoid mixing too much material. Because it causes concrete to water.
Cement mixers or cement mortar mixers are categorized according to 3 criteria. The way the engine engages with the boiler, the capacity of the device, and the type of engine are these criteria. Cement mixers come in different types with different volumes, which we will discuss below.
Cement mixer price
The price of a cement mixer is determined according to various parameters. Among them are the capacity of the mixer, the type of engine, the method of transferring power from the engine to the tank of the machine, the number of wheels (moving equipment), the thickness of the boiler plate, the method of loading materials (manual or hydraulic), the brand of the machine, currency fluctuations, etc.
How to work with a cement mixer
It is very easy to work with a cement mortar mixer or cement mixer, and to use it, you must follow the general principles. First, pour a sufficient amount of water into the boiler. This amount should be proportional to the size specified in the instructions for making the desired concrete. A large volume of water dilutes the concrete, and if the volume of water is small, the concrete hardens.
In the next step, you add cement, sand, and special additives to the boiler according to the specified instructions. Now it is time to turn on the machine.
At this stage, water, cement, sand, and ... are mixed together to make concrete. In addition, the rotation of the pot produces uniform and high-quality concrete.
Be careful not to fill the entire pot. There should always be room for maneuvering and mixing the materials. Typically, two-thirds of the nominal capacity of the bowl is filled with materials.
After the concrete is transferred and prepared, do not turn off the machine. It is necessary for the machine to be active. This prevents the concrete from settling and hardening. At the end of the work, all equipment must be washed and cleaned. Otherwise, the remaining concrete will cause wear and tear on the machine.
Types of cement mixers
Two wheels
Usually, in low-capacity cement mixers, two wheels are used for one side of the chassis and the base for the other side. This makes it easy to transport and move the cement mortar mixer.
Four wheels
This number of wheels is used for medium-sized cement mixers. A four-wheeled concrete mixer can be easily moved according to the volume of the pot.
Simple cement mixer
This type of cement mortar mixer does not have wheels for movement and is placed on the ground using a base. This makes it a little more difficult to move the machine.
Bucket concrete mixer
Cement mixers usually use a bucket of materials to load large volumes. This makes loading materials easier and makes it easier to move heavy-weight machines.
Hydraulic cement mixer
Cement mixers are basically divided into two categories: light and heavy. In the heavy-weight category, a hydraulic bucket is used because it is difficult to load materials manually. This makes it easier to load materials into large-volume mortar mixers.
Types of cement mixers in terms of how the engine engages with the boiler
Round gear concrete mixer
This type of concrete mixer is the most common and widely used type of concrete mixer. Round gear concrete mixers are also known in the market as belt gear mixers and are a standard and universal design in all concrete mixers. In a belt gear concrete mixer, the power transmission from the engine to the boiler is carried out by gears located around the boiler and engaged with the gearbox shaft. Usually, concrete mixers with a capacity of more than 400 liters are made in the form of a round gear.
The gear of this type of concrete mixer is made of cast iron and is highly prone to breakage, which is one of the disadvantages of the round gear concrete mixer. The advantages of the round gear concrete mixer include its easy service and maintenance.
Bottom gear cement mixer
In this category of mixers, the power transmission from the engine to the boiler is carried out through gears located below the boiler and engaged with the gearbox shaft. The cement mixer with a spur gear has low noise, high performance and low wear. The gears of this type of cement mixer are made of steel and have high resistance.
This type of device is less used than the spur gear. It is used to rotate low-volume boilers such as 120, 250 and 350 liters. The spur gear concrete mixer has a higher price and depreciation than the outer gear.
Compact rubber roller
In mixers with a high volume such as 750 and 1000 liters, where the boiler is very heavy and it is not possible to transfer power through the teeth, the compact rubber roller mechanism is used. In this way, 4 rubber rollers are used to transfer motion from the motor to the boiler. 4 rollers are installed under the roller that is located on the boiler and holds the boiler firmly. In this type of system, the boiler, along with the compressed rubber roller, is coupled to the gearbox shaft, and the rotation of the gearbox causes the boiler to rotate.
The concrete mixer is a plastic roller without gears. So there is no possibility of gear breakage. But its manufacturing cost is high.
Difference between under-gear and over-gear concrete mixers
One of their differences is in the type of gears. The gear of the under-gear concrete mixer is made of steel. For this reason, it has high resistance. However, the gear of the over-gear concrete mixer is made of cast iron and has a high probability of breakage.
Under-gear concrete mixers are quieter and less used than spur gears.
The price and depreciation of the under-gear are higher than the over-gear.
Types of cement mixers in terms of capacity
120-liter cement mixer
120-liter or laboratory concrete mixers are used for working in low and laboratory volumes such as testing concrete or various materials. This device has an electric motor with a 1-horsepower engine and works with single-phase electricity. The method of emptying its boiler is done manually through the installed steering wheel. The technical specifications of the 120-liter concrete mixer are:
Useful loading capacity: 90 liters
Type and power of the driving motor: 1 horsepower electric motor
Mechanism and rotation speed of the boiler: spur gear or belt gear, 15 rpm
Material loading mechanism: manual
How to move the device: two wheels
250-liter concrete mixer
The 250-liter concrete mixer has high maneuverability, which is used for concrete construction operations in buildings. This type of mixer is one of the most widely used types of concrete mixers. This device is equipped with a hydraulic bucket, two-way discharge steering, and a single-phase electric motor with a power of 3 horsepower.
300-liter cement mortar mixer
This type of cement mixer is the best-selling type of cement mixer. Their type of electric motor is mostly used in various construction projects and concreting. The method of loading and unloading materials in the 300-liter concrete mixer is manual and the device's gearbox must be used to unload materials. This control turns the boiler into a horizontal and vertical position.
The technical specifications of the 300-liter concrete mixer are:
Useful loading capacity: 250 liters
Type and power of the driving motor: Electric motor, diesel and gasoline with a power of 3 horsepower
Mechanism and rotation speed of the boiler: Over and under gear, 15 rpm
Material loading mechanism: Manual
How to move the machine: Four and two wheels
350-liter concrete mixer
The 350-liter concrete mixer is the most widely used capacity of concrete mixers for concrete construction operations in buildings, which has two arrow wheels for convenient and convenient transportation. The boiler plate used in this concrete mixer is 5 mm and has a strap and towing capability within the workshop area for easy transportation. The 350 liter concrete mixer is also known as the 250 and 300 liter cement mixer. Because this product loads usefully and because the boiler cannot be filled completely. Because the useful loading size is up to 250 liters. The 350 liter concrete mixer has a conventional unloading steering and gearbox and has 4 arrow wheels.
Types of cement mixers by engine type
In the structure of the cement mixer, gasoline, diesel and electric engines are used. In general, the large cement mortar mixer tank must always be rotating so that the materials inside it are mixed together. In addition, its continuous rotation prevents the materials from hardening. One of the classifications of cement mixer types is based on the engines used in their structure, which are offered in two types: single-phase and three-phase.
Diesel concrete mixer
This type of cement mixer is offered using diesel engines with diesel fuel and a power of more than 6 horsepower. Diesel concrete mixers are used for large concrete mixer volumes. This product is capable of producing very high powers. For this reason, its price is high. Famous brands of diesel cement mixers include Margo, Kama, Lister, Cap, and ... diesel concrete mixers.
Gasoline Cement Mixer
This type of cement mixer uses high-power gasoline engines (more than 5 horsepower) and reliable operation. Gasoline concrete mixers on the market have different brands such as Honda, Rubin, Rato, Lancsin, etc. The type of gasoline engine has a direct impact on the price of the concrete mixer, so try to make your purchase from reputable brands.
Electric Cement Mortar Mixer
Electric concrete mixers are divided into two categories: single-phase and 3-phase, in which an electric motor or dynamo with a power of more than 2 horsepower is used. These types of mixers have engines with different Chinese brands, Motogen, Electrogen, Elco with speeds of 1500RPM are available in the market. The price of electric cement mixers is cheaper than other types and is determined according to the type and power of the engine, brand, etc.