The shearing action of the anchor blades past the vessel wall produces a continual interchange of liquid between the bulk liquid and the liquid film between the. Characterizing the flow of stirred vessels with anchor. Radial agitators consist of propellers that are similar to marine propellers. Introduction to agitation and mixing process agitator design mixing time mixing of liquid system design of gas dispersion process design of solid liquid mixing process design of solidsolid mixing process these topics are discussed in detail by the respective faculty members. Proper design of a round anchor agitator springerlink. Agitators for mixing tanks agitator equipment inoxpa. Agitator design and selection standard engineers vineet. Now well go into more detail about each impeller type and their influences on the mixing process. This simple agitator consists of a shaft and an anchor type propeller and can be mounted centrally or at an angle. Blend times are somewhat longer than helical ribbon type impellers. The next step in the design series is the mechanical design of the agitator component. Scale of agitation 1 is quite mild, 3 is normal, 6 is vigorous and 10 is violent.
Agitator can also mounted horizontally from side of a tank, called side entering agitator, for very large diameter storage tanks. The anchor adapts to the shape of the tank, usually with curved or conical bottoms to sweep all internal surface. I anchortype agitators anchortype agitators are principally designed to mix highly viscous products and nonnewtonian fluids, i. These agitators can be mounted in tanks with rounded or conical bottoms. Generally agitator is mounted vertically at the top of the tank. It is most effective in squatty batches where vertical pumping is not as important as in tall batches. Paddle agitators is one of the most important types of agitators whose blades reach the tank wall. Mixing is accomplished by the rotating action of an impeller in the continuous fluid. Anchor impeller the anchor impeller is the most economical laminar flow impeller. The shearing action of the anchor blades past the tank wall produces a continual interchange of liquid between the bulk liquid and the liquid film between the blades and the wall holland and chapman 1966. The agitator stirrer is basically designed to agitate and mix several types of viscose liquids. Mixing of fluids is necessary for many chemical processes. Anchor impeller straight blade turbine best suited for high viscosity fluids 5,00050,000 cp. Designing for anomalies the first step in assessing a design is to calculate the power and torque absorbed by the proposed agitator.
I offer design and drawing program which designs and draws a detailed drawing of agitator mixer, with user friendly dialog boxes, which is an addon for any cad program for designing and developing ga drawing for agitator mixer. Find out all of the information about the lightnin product. Anchor agitators operate very close to the vessel wall with a radial clearance equal to 0. Customer questionhow are industrial agitators and blender designs evaluated and agitator shaft design calculation filetype can i be sure that my process goals will. The sweep diameter of the anchor impeller is generally 90 to. The design is recommended to be used to develop the agitator to remove the drudgery of human folk in mixhomogenizing paint in massive tanks to desired consistent properties before blending it with additives in standard facility prior to painting to avoid inconsistencies in the requisite blend properties and consequent paintwork costs. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Anchors have successfully been used to mix liquids with dynamic. Students can brief up their knowledge to up date information on agitation and mixing. A comparative analysis of the performance of kia is made with three conventional impeller types, rushton, anchor, and pitched blade. This type of device imparts intense mechanical and hydraulic shear by. While it is not within the scope of this paper to cover the steps necessary to assure a proper process design, the impact of decisions made at the process design step on the mechanical design requirements must be understood.
Applications include food products pharmaceutical and cosmetic products paints varnishes. Design specification of the motor is then determined by. This impeller provides radial flow and improved heat transfer at relatively low speeds. On request, an anchortype agitator with a thermometer weil or one of the numerous cryolock types may be. Types of agitators, agitators design and significance. Moreover, the provided anchor type agitator can be availed by our clients at reasonable prices. Calculates agitator speed and power requirement for a given reactor geometry and mixture properties. Agitator power requirement for a given geometry and mixture checalc chemical engineering calculations to assist process, plant operation and maintenance engineers. Layout of agitator name td geometrical parameters 1 anchor paddle agitator cvs 69 1014 1,11 h v d 0,8 h d 0,12 h 2 d 0,055 2 helicalscrew agitator with draught tube cvs 69 1028 2 h v d 1,5 s d 1 d d 1,1 h c d 1,15 3 eccentrically placed helicalscrew agitator 2 h 2 d 0,25 c t 0,02. Features cuts blend time by half shear rates are modest for both high and lowviscosity conditions fluid foil design delivers better axial motion and reduces power consumption.
Option 05 loop type anchor, the loop type anchor is designed for high viscosity products this type of anchor is always. The second step in the design sequence is the mechanical design of the mixer components. Typical applications include ink, paint, sauce, adhesive, cream, etc. Figure 1 represents a typical industrial system used for mixing a batch liquid figures are located at the end of the course content example. The anchor provides a means for agitating product near the vessel surfaces since the bottom horizontal bar and vertical wings run. Type of fluid and its physical state, the degree of agitation and geometry of vessel continue reading agitator design. We design and manufacture a wide range of liquid agitators and slurries for all processes in the pharmaceutical, chemical, food, cosmetic and similar industries.
Types of agitators, agitators design and usages for mixing. Agitator is one of the important parts in the mixing process. The first step is process design from a chemical viewpoint and involves the specification of the impeller pattern, speed, temperature and blade angle etc. Mechanical agitator power requirements for liquid batches. Pdf agitation and mixing suryakant randeri academia. Ss304, ss304l, ss316, ss316l, c22, cs and custom to add bottom shaft support. Custom engineering of impeller design can be performed based on. To design an agitated vessel, we need to estimate the power required to. Impeller design for mixing of suspensions tomas jirout, frantisek rieger czech technical university in prague, faculty of mechanical engineering, department of process engineering, technicka 4, 166 07 prague 6, czech republic abstract this paper deals with effect of impeller type on offbottom particle suspension. High agitating performance the din reactors ae are equipped with an impellertype agitator and a baffle. It may include mixing of liquid with liquid, gas with a liquid, or solids with liquid.
This is the normal practice for mounting an agitator in small and medium size tanks. The anchor impeller is close clearance, radial flow impeller used for mixing of viscous liquids. Anchor agitators operate within close proximity to the tank wall. The mixing arena is the boxing ring where chemist and chemical engineer fight in the work done. In our article on 4 impeller types and their applications, we provided an overview on the most common types of impellers used in industrial mixing. Paddle agitators are used where an uniform laminar flow of liquids is desired. Characteristic of application requiring minimum fluid velocities to produce a flat but moving fluid batch surface. Our core business was and is the technical design and production. Choosing the right anchor agitator for your multishaft mixer. The model described here calculates the flow and heat transfer for a single phase flow. The wide variety of mixer types dynamic and static, as well as intank and inline and the design options for the mixers and vessels can make selecting the right unit tough. After input of design data is completed, the program provides tables for entering of average properties of media. Mechanical agitator power requirements for liquid batches can be determined from the energy balance equation and empirical correlations. Pdf design of stirrer impeller with variable operational.
If an agitator is not correctly designed for these fluids, the mixture in regions near the walls can be completely stagnant. Proper and uniform mixing gives improved quality of the product. This agitator is manufactured using premium quality components under the strict observation of our dedicated professionals and also tested on various parameters to ensure its operational fluency. The main objective of this work is to give a detailed picture of the secondary flow of stirred vessels with anchor impellers and indicate how this knowledge can help to improve anchor reactor design and operation. Pdf geometry and architecture of mixing agitator a. For our case, the density is entered, and the media is. This is one of the most primary types of agitators with blades that reach up to the tank walls. Agitator design is often though as the application of two engineering disciplines.
Anchortype agitators are principally designed to mix highly viscous products and nonnewtonian fluids, i. Anchor agitators consists of a shaft and an anchored propeller that can be mounted centrally or at an angle. Design of a mechanical agitator for supplementing paint. In our case a tank with elliptical bottom without jacket is selected fig. Pdf design of stirrer impeller with variable operational speed for. It generally provides minimal radial clearance between it and the vessel wall. Vtrr anchor or anchor mixers are mainly used for the homogenization and mixing of liquids with medium to high viscosity and nonnewtonian liquids. Contact a supplier or the parent company directly to get a quote or to find out a price or your closest point of sale. The shearing action of the anchor blades past the vessel wall produces a continual interchange of liquid between the bulk liquid and the liquid film between the blades and.
Anchor type agitator manufacturer, supplier, exporter in. Food for thought you wanted to stir things up but, your mixing gave only agitation. They are designed to operate at low speeds with strong gearboxes enough to transmit the required high torque. Effectively contacting materials is crucial for operations ranging from solids suspension to gas dispersion and from reacting raw materials to compounding finished ingredients. Anchor impellers can be provided with wipers andor cross arm support. Introduction to nonnewtonian fluid and power requirement for nonnewtonian fluids d. In this paper, we have mainly focused on different types of agitator used in industries to increase the mixing performance. This design consists of two vertical wings connected by a horizontal flight to a centrallypositioned shaft. Energy utilization in different types of agitators. Calculation of power requirement for newtonian fluid c. Our pfaudler glass type wwg is extremely resistant to corrosive and mechanical stress.
73 1414 368 60 944 746 1191 401 985 1258 785 1541 821 1335 1077 257 1160 1272 431 1141 536 1185 224 988 1010 1395 686 282 450 1204 1461 1306 1310