Together
to success
since 1997
"INTECH GmbH"
We are interested in cooperation with the manufacturers of mixing equipment (plants), who are looking for an official and reliable distributor to deal with supply & delivery of their equipment to the industrial plants in Russia.
The company’s top management and sales team are well acquainted with the Russian market, its mentality and laws; they also understand industrial specifics of the financial and economic activities of the Russian customers. All our sales managers have a large customer database, extensive experience of successful sales and well-established connections with the potential buyers of your mixing equipment (plants). This allows our managers to promptly set out the most promising directions for promotion and to ensure a rapid entry of the products into the promising Russian market. Our employees, who are fluent in English and German, are focused on working at the international market with the supplies of foreign equipment.
Our team of experienced engineers, who can handle the most serious technical problems, constantly keeps in touch with the Russian customers, holds meetings and delivers presentations regarding the latest achievements of our manufacturing partners. They point out the engineering challenges and actively communicate with all the departments at Russian plants. That is why the specifics of doing a business in the Russian Federation are well-known to us, and we also know the equipment of the local industrial plants and their up-to-date modernization needs.
Once we become your authorized representative in Russia, our marketing staff will carry out a market research in order to check the demand for mixing equipment (plants), will submit a market overview for mixing equipment (plants) that you offer and evaluate the needs for this type of equipment at local plants. Our specialists will also estimate the potential and capacity of this market at local industrial plants. Our IT-team will start developing a website for your products in Russian. Our experts will assess the conformity between your mixing equipment (plants) and customer needs as well as analyze the common reaction to the new goods in general. We will look into the categories of potential customers, and pick out the largest and the most promising plants.
Upon becoming your authorized agent on the territory of Russia, ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), will obtain certificates, if required, for a batch of the goods, for various types of mixing equipment (plants) in compliance with Russian standards. We can also arrange the inspection in order to obtain TR TS 010 and TR TS 012 Certificates. These certificates provides permission to operate your equipment at all industrial plants of the EAEU countries (Russia, Kazakhstan, Belarus, Armenia, Kyrgyzstan), including the hazardous industrial facilities. Our company is eager to assist in issuing Technical Passports for mixing equipment (plants) as per Russian and other EAEU countries’ requirements.
Our engineering company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), collaborates with several Russian design institutes in various industrial segments, which allows us to conduct preliminary design as well as subsequent design works according to the standards, construction rules and regulations that are applicable in Russia and other CIS countries. It also enables us to include your mixing equipment (plants) into the future projects.
The Company has its own logistics department that can provide packing service, handling as well as the most efficient and cost effective mode of transportation of the goods (incl. over dimensional and overweight goods). The goods can be delivered on DAP or DDP-customer’s warehouse basis in full compliance with all the relevant regulations and requirements that are applicable on the Russian market.
Our company has its own certified specialists who will carry out installation supervision and commissioning of the delivered equipment, as well as further guarantee and post-guarantee maintenance of mixing equipment (plants). They will also provide necessary training and guidance for the customer’s personnel.
According to the design features mixing equipment for mixing of hard granular substances and pasty media is divided into:
Mixers with blades with progressive motion are used to work with large volumes of solid materials (for example, for shoveling of malt). They practically do not apply in the field of chemical industry.
Batch-type units and units of continuous action are used for mixing of solid bulk materials. Batch-type units constructively represent drums, which are loaded and unloaded on a periodic basis. Cylindrical drums mounted on the shaft in a horizontal or vertical position are most simple agitators. Hexagonal drums provide more intensive mixing and grinding. Devices called "tumbling barrel" are used for mixing of small volumes.
Batch-type mixers for bulk solids:
Self-emptying mixer is more perfect. Loading and unloading of bulk material is carried out by means of screw.
There are also many designs of batch-type mixers. This group includes rotating-pan mixer. Tangential ribs provide greater movement of the material to the right side with each rotation of the drum. In units with spiral bands rotating inside a cylindrical or trough-shaped body mixture is mixed to the discharge side. Bands with right and left directions of helical lines provide counter-movement of the material.
Unit for continuous two-stage mixing of bulk materials is often used in large-scale industries. In such agitators components of the mixture enter the common screw through the dosing units, after which they are secondary mixed in a continuous mixer.
Solid granular or powdery substances turn into dust upon mixing of solid granular compounds (so-called dry mixing). Dry mixing is carried out in silos, mixing devices or simply in the dumps.
The general principle for all types of dry mixing is the intake of mixed product from one area and its transfer to another area. This procedure is repeated several times, and during an additional edge mixing of zones it leads to a distribution of components in each other.
Mixing equipment equipped with agitators with two parallel horizontal rotors of special shape is widely used in processes of mixing of pasty and granular masses. Container, in which the rotors are located, has the form of a trough, the bottom of which has the shape of a half-cylinder.
The mixer operates as follows: the mass is pressed against the seat of the trough under pressure of the blade, which results in crushing of part of the mass. Another part of the substance, which does not get into the zone of action of this blade, gets into the zone of action of the second blade. The mirror effect of two blades covers the whole mass of mixing substance. The ratio of the number of revolutions of blades must not be an integer; in practice it must be a number close, but not equal to two.
Mixing in such devices is accompanied by partial grinding of masses, which can be considered as an undesirable passing process. The degree of grinding can be weakened or strengthened by the choice of the form of blades and troughs, as well as by the regulation of the number of revolutions of blades.
There are 3 types of this mixing equipment:
Light mixing equipment is designed for mixing of powders or soft pasty substances with the addition of liquid or without it.
Mixers of heavy type are used for mixing of highly thick, viscous masses (such as synthetic rubber) and for washing of substances not soluble in the liquid.
Hoe-type kneaders are also called tray-type kneaders or trough-shaped kneaders. In the trough are located two rotating blades, the shape of which repeats the shape of the trough.
Shape of kneading blades can be selected depending on the substance to be treated. Usually they have hooked shape moving along the trough wall or close to it. Kneading blades press substance to the saddle of trough, dividing it into pieces. Then they join the substance, but in a different place. Blades are distinguished from each other by the number of revolutions, so that their position relative to each other is constantly changing. Change of trough sections occurs rapidly due to the fact that the blades have multiply curved contours. Kneading time for portions of a substance depends on its consistency. In case of high viscosity of substance kneading time may last from a few minutes up to one hour. This process requires a lot of effort. This is the reason for the choice of engines with the capacity of up to 100 kW. Kneading blades and drive shafts are designed with a large safety margin.
Hoe-type kneaders are considered as standard equipment used for batch kneading of viscous or pasty masses, as well as for rubbing operations.
So-called differential screw mixers (mixing screws) are also used for mixing of granular substances. Equipment of this type is a trough, in which two parallel horizontal shafts equipped with flat blades are rotated.
The blades must be mounted on the shaft along a helical path through certain intervals creating a discontinuous helical surface of the blades. Trough is closed by lid. Mixing of the material and its progressive movement along the machine are performed during the rotation of the shafts.
Screw plasticators are used for a continuous process of mixing of viscous masses. Their designs are very diverse; they can have one or two screws.
Screw plasticator with a single spindle has a single screw equipped with straps curved in a helical line. The screw slowly rotates in smooth barrel.
Rotary screw captures the product, which enters the plasticator for kneading, and moves it along a helical path between the turns of the screw to the output side. Straps for flow separation push the product towards the adjacent turns of the screw. Not captured part of the substance enters the gap between the screw and the barrel, moving towards the discharge end with a slow moving stream. Part of the flow in the gap between the screw and the housing is exchanged with a part of the stream transported between the turns of the screw. This occurs by means of flow separation straps. Particularly strong mixing occurs in a mixing zone, which consists of a set of kneading disks with a cross section of flattened triangle.
It is possible to mix the substances, which can be kneaded only after heating, due to the presence of heating coils in the barrel. Softening and homogenization of thermoplastics, for processing of which is used duplex worm kneader, is also possible.
Stirring of dry granular substances is also possible by means of mixing drums.
This unit is a horizontal drum rotating on supporting rollers, on which the bandages are put on. Blades of helical type are mounted on the inner walls of the drum. There are also located tangential walls, which have no contact with the drum axis. During rotation of the drum such location of the blades promotes intensive mixing of the materials.
The screw is designed for loading and unloading of substances. Loading is carried out through the upper inlet and discharge is carried out through the bottom inlet, for which the rotation direction of the drum constantly changes.
Drum mixer (so-called mixing drum) is a horizontally arranged tank in the form of cylinder, which slowly rotates around its axis.
Mixable product rises upward and then falls down as a result of rotational movement. During this process mixing of the material and its movement from one area to another take place. Elements embedded in the drum mixer contribute to the process of mixing. Mixing drums with horizontal straight lifting straps are mounted with a slight slope for the handling of the product from the loading zone to the discharge side.
Product is mixed near the drum mixers with helical guide plates with simultaneous movement from the loading point to the unloading side. Such mixers operate in a continuous mode.
The substances are mixed in pneumatic mixers by flowing air stream. Usually these mixers have a form of a vertical cylinder. A perforated bottom or nozzle is located at the bottom of the mixer. Through it air is blown into bulk material. In turn, the bulk material passes into loose fluidized state.
Mixers operating on the principle of a fluidized bed are equipped with perforated bottom. Air supply to the material goes through the bottom under overpressure of 1-2 bars. This creates a filling, loosened by airflow and having fluidity similar to liquid. The airflow creates a strong circulation in the bulk material on a perforated bottom that resembles a boiling liquid.
Compressed air is blown into the mixers operating on the principle of pneumatic shock through the nozzle by means of impulses under pressure of 10-40 bars. Pulsating movements accompanied by twists are formed in the process of mixing of granular material.
Sparge method for mixing of liquids and suspensions consists in passage of dispersed gas flow through the medium.
Sparge mixing is used:
Schemes of sparge mixers:
The effectiveness and advantages of sparge mixers
One of the key conditions for the effective operation of a sparge mixer is a uniform distribution of dispersed gas flow over the cross section of the unit. A porous plate or a perforated grille with fine grid provides this condition in units with a small diameter. The sparger tube (tube with holes, curved in a spiral shape) is used in the medium size units. Spargers of large units, which are used for more viscous materials, are used in conjunction with a vane agitator. In addition, units of large and medium size can be fitted with internal and external circulation devices.
Sparge mixing has the following advantages:
The disadvantage of this method is the high-energy consumption for getting of the compressed gas, as well as its applicability only for liquids, characterized by a low level of viscosity.
During the mixing of flows mixing occurs on the basis of the moving energy of the flowing fluid as a result of deflection, separation and turbulent eddies. Mixing takes place in the tube with built-in fixed mechanisms or by other mixing device. Such devices are called static mixers. The most common flow mixing devices are mixing pipes (pipe mixers), jet mixers, mixing valves and centrifugal pumps.
The pipe mixer is a pipe section, in which fixed gaskets of different kind are imbedded: plate-like gaskets, plicate gaskets.
Gaskets are placed in a pipe with different inclination angles and rotations by 90º. Mixable liquids are supplied to the inlet side. Liquids are separated into separate streams at crossing points of plate section, turned and supplied again, but with a different diameter of pipe.
Mixing of two separate fluid streams of high viscosity (resins) takes place by means of diffusion. The required length of the mixing pipe in this case is about 10-15 diameters of this pipe.
Turbulent eddies prevail during turbulent flow of gases or liquids of medium and low viscosities. The required length of the mixing pipe in this case is about 2-5 diameters of this pipe.
Mixing pipes are used not only for mixing of fluids and gases with each other, but for the emulsification of insoluble liquids in other liquids.
An advantage of the mixing pipe in comparison with the pneumatic and mechanical mixers is that there are no moving mechanisms and a separate mixing tank. This eliminates the need for maintenance.
Disadvantages are the considerable pressure losses in comparison with a hollow pipe. In addition, there is a possibility of plugging in the case of clogging of openings between the gasket plates.
The liquid is supplied under pressure in jet mixers (pumps). The cross-section of the nozzle is narrowed, which leads to an increase in feed rate.
In this case the static pressure drops sharply, after which there is an inflow of admixed liquid.
A high turbulence is created in the mixing pipe and diffuser, which leads to intensive mixing of the two fluids.
Mixing is a process of preparation of high viscosity mixtures, thick-milled mixtures with the consistency of ointments or pastes. This process represents a number of repeated operations: kneading, stretching, shifting, separation and movement from place to place.
Rubbing is used to obtain a pasty or doughy mass from solid matter (powder) by adding a liquid with constant stirring. The liquid is distributed in the powder, wetting its particles. The wet mass is converted into a loose clump. Organic substances swell and dissolve, turning into a sticky liquid. In turn, this liquid forms a sticky dough-like mass.
Grinding of granules and powder particles takes place in the product during the process of kneading and rubbing. It is conditioned by high shear loads.
Planetary mixers, hoe-type kneaders and screw plasticators are used in the implementation of these processes.
The planetary mixer is used for obtaining of light pasty materials.
It is equipped with rolls (there can be one, two or three rolls). Together with mixing equipment they rotate in the mobile tank of the planetary mixer. The rolls rotate around their axis and planetary rotate around the central axis of the mixing tank. During rotation they actively stir mass and scrape adhering pieces from the walls.
Belt-screw mixers consist of stationary mixing tray, in which rotates twin screw band auger conveyor. It loosens miscible granular product and raises it. External arcs of the screw move the product from the loading point to the unloading side. Moreover, internal arcs of the screw contribute to the movement of the material in the opposite direction. This ensures intensive mixing process, during which prevails product movement to the discharge side wherefore there is a permanent emptying of the mixing tray.
Mixing chamber of silo screw mixer has the shape of a cone, which stands on its top.
Screw mounted at an angle slowly rotates along the walls of the silo. It is rotated by the rotary arm on the rotary axis around the perimeter of the cone. During its rotation screw lifts miscible product from the walls and from the bottom of the silo and distributes it at the top along the perimeter of the cone. At the center the product slides down, where it is again captured by the screw near the bottom.
Thus, bulk material is continuously circulated and mixed, which allows keeping materials susceptible to caking in the bulk state. The finished product is discharged through the valve hole in the bottom of the silo.
Artificial turbulization of flow is used for mixing of gases and liquids in pipelines. For this purpose within the pipeline must be installed static parts that provide a change of direction and flow rate:
The use of semi-partitions and diaphragms with displaced holes provides multiple constriction and expansion of the flow, which leads to a change in flow direction. Screw inserts with alternation of helical turn direction (left and right) twist the flow repeatedly and in different directions. Injection mixers are used in conjunction with screw inserts.
The method of mixing in the flow by means of stationary turbulizers is used under the condition of mutual solubility of the substance components, as well as under the condition of its low viscosity. It should be noted that this method requires great expenditure of energy at a relatively low mixing efficiency.
Circuits of devices intended for mixing in the flow.
Other equipment
Upon becoming the official distributer of agitators (mixing equipment), our company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), carries out the following: finds the buyers of your products on the market, conducts technical and commercial negotiations with the customers regarding the supplies of your equipment, concludes contracts. Should a bidding take place, we will collect and prepare all the documents required for the participation, conclude all the necessary contracts for the supply of your equipment, as well as register the goods (agitators (mixing equipment)) and conduct customs clearance procedures. We will also register a certificate of transaction (Passport of Deal) required for all foreign trade contracts in the foreign currency control department of the authorized Russian bank so that currency transaction could be effected. If required, our company will implement an equipment spacing project in order to integrate your equipment into the existing or newly built production plant.
We are convinced that our company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), will become your reliable, qualified and efficient partner & distributor in Russia.
We are always open for cooperation, so let’s move forward together!
