Example 1 it is desired to give 48 hours of contact on 100 tons per 24 hours of 2. The combination of the cfd investigations with conventional agitator software ensures maximum safety regarding the process engineering design for the agitator. Calculation for agitation scaleup and power requirement. Concept of design for agitatormixer by imran pinjara books. Agitatormixers providing tools for research and industry at a glance. Scribd is the worlds largest social reading and publishing site. Proquip z series topentry tank agitators combine the strength and power of worm gear plus the efficiency of a helical or spiral bevel gear. Use this ms excel spreadsheet to calculation the power requirements and mixing intensity for a defined mixing application. Propeller turbine mixer design calculator wastewater treatment mixing equations. Jan 18, 2009 design of shaft length of agitator posted in industrial professionals. Page 1 effective mixing of fluids for blending and motion requires a detailed analysis of capacity, viscosity and dynamic response for the fluid.
The software takes minimum basic inputs and all other components of the vessel and also shaft along with bearings are automatically. Based on a modular design, our altb agitators consist of a drive unit with bearing frame, shaft with. How to design agitators for desired process response chemical. You can download a trial version of the software from our website. Characteristic of application requiring minimum fluid velocities to produce a flat but moving fluid batch surface. Agitator design spreadsheet reactor vessel youtube. If an agitator is not correctly designed for these fluids, the mixture in regions near the walls can be completely stagnant. Design of shaft length of agitator industrial professionals. Agitator power requirement and mixing intensity calculator. After input of design data is completed, the program provides tables for entering of average properties of media. A centrifugal agitator with a single impeller that can develop a differential pressure of more than 150 psi between the suction and the discharge is difficult and costly to design and construct. 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. Relationship between torque and density in agitator.
Choosing the right anchor agitator for your multishaft mixer. Custom engineering of impeller design can be performed based on developed horsepower, viscosity, critical speed and other key factors associated with specific processes. The differential agitator is an electro mechanic set consists of. This revealed the diversity of the vote across new york state from the cities to the suburbs, boom towns and service worker centers in real time, on the air and on the wnyc home page. Effectively contacting materials is crucial for operations ranging from solids suspension to gas dispersion and from reacting raw materials to compounding finished ingredients. This book explains mechanical design process of agitator with example of designing a agitator,flow patterns in agitator, geometrical relations for various types of agitator impeller,selection of agitator on the basis of viscosity of fluids,power curves for various impeller for calculation of power number.
This dissertation work is aimed to redesign existing single impeller agitator shaft by using ss316 material with double impeller. May 29, 2019 this app calculate power required for agitation. Straight blades pitched blade curved blades anchor propeller disc type turbine type narrow. Student 2professor 1,2department of mechanical engineering 1,2msss cet, jalna abstractmixing is very important operation in any process industry. The viscosity of newtonian media is independent of the agitator shaft speed or shear rate. Mechanical agitator power requirements for liquid batches. Agitator shaft length should be calculated on which basis. Calculates agitator speed and power requirement for a given reactor geometry and mixture properties. This book is for acquiring knowledge of designing a agitator or mixer. Homemixer agitator mixtank calculators mixer agitator sizing program tank volume calculator mixing torque agitator. In both cases a twostage ekato viscoprop agitator system with an impeller diameter d 2 1100mm serves as basis for the calculations. A low speed anchor compliments one or two high shear devices, such as a sawtooth discstyle disperser blade or a rotorstator assembly. However, the developer accepts no responsibility for the accuracy, use of or calculation results derived from herein.
Several standard designs materials to match the vessel. I am asking this because on low level alarm 20 % of tank, agitator is not getting immersed in liquid resulting in frequent damage to bearing due to vibration so we have changed alarm value to 50% instead of 20%. The cerebromix program was developed using over 30 years of experience of researchers at the cerebro sa design, manufacture and deployment of agitators in brazil and throughout latin america. Review on design of agitator to optimize its performance rahul h. We did something a little creative and unique at wnyc this past election night. Our core business was and is the technical design and production. Multiple gearbox, motor, impeller, shaft size and seal options are available. They can be used to simulate tests that are not possible with real media for safety reasons. Dear sir, i want to design a agitator drive with tank dia 3. 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. Calculation of power requirement for newtonian fluid c.
It is an outline of the chemical engineering discipline, related principles and calculation methods. Close clearance agitator highspeed impeller design layout of agitators. Topentry tank agitator designs proquip mixing solutions. It includes all of the features of cerebrotank, plus the complete design of tank agitators including impeller design and stirrer motor selection. Proquip topentry tank agitator designs are mechanically simple and feature highquality rugged components for reliable, troublefree performance in demanding industrial applications.
Design and implementation of differential agitators to. Agitator design is often though as the application of two engineering disciplines. These are made available to help you do preliminary mixer sizing, mixtank volume calculations, some mixer mechanical design calcs, etc. Explaining how to calculate the dynamic force on the agitator is more difficult than providing a value for the conditions described. To design calculations at different viscosities illustrate the typical effect of viscosity on the required agitator power.
Design of shaft length of agitator posted in industrial professionals. Further, how the dynamic force will be used makes a difference in the suggested safety factors to be applied to the calculated values. All software provided asis with no warranty, expressed or implied, available. Cone design with intank bearing makes it able to handle high radial forces and heavyduty operations. This dissertation work is aimed to redesign existing single impeller agitator shaft by. This means that the powertospeed ratio is typically a square function. Sidemounted horizontal and topmounted vertical agitators, dynamic chemical mixers, and. Short term training programme on process engineering.
The next step in the design series is the mechanical design of the agitator component. Offered in two versions, allows the calculation of stirring and stirred systems with anchors, straight blade impellers, highefficiency turbines and. In this video, we design a reactor with agitator shaft. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Agitation and mixing of fluids purpose of agitation. Redesign and structural analysis of agitator shaft for. The mixer selection program allows you to calculate flow rates and power draw of mixing impellers, see what the agitator will provide for tip speed and tank turnovers per minute, and give you some rough. Links for cadempvd download, help guide, sample calculation reports of pressure vessel, heat exchanger, storage tank, reactor with agitator shaft, mixing vessel, process column, chimney and more information on cadempvd and engineering services. Review on design of agitator to optimize its performance. Mixer agitator mixtank calculators white mountain process.
Scale of agitation 1 is quite mild, 3 is normal, 6 is vigorous and 10 is violent. Torque shaft power fluid density shaft speed2 impeller diameter5 2 pi. Concept of design for agitatormixer by imran pinjara. The work is carried out to reduce deflection by optimizing the design or by using different materials like ss, ss304 and ss305. Cerebro mix light non pressurised tank and mixer design.
Gland losses as 10% transmission losses as 20 % this also gives result as total power required for agitation by considering gland losses and transmission losses. Designing for anomalies the first step in assessing a design is to calculate the power and torque absorbed by the proposed agitator. For our case, the density is entered, and the media is defined as newtonian fig. Introduction to nonnewtonian fluid and power requirement for nonnewtonian fluids d. Agitator and wiper design modification for milk khoa machine. Design specification of the motor is then determined by. 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. For the purposes of equipment design, the dynamic forces should be calculated. In most agitators, the actual relationship between torque and density is. Agitator design and agitator systems about us we have figured it out stelzer ruhrtechnik is one of the leading companies in agitation technology and a soughtafter solutions partner for projectspecific process technology solutions. As per the design calculation existing agitator gb is designed for max. This research is to design and implement a new kind of agitators called differential agitator.