thickener torque
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Conventional Thickeners
The torque capability of a thickener drive is specified as Duty Rating being the maximum mechanism design strength or the 100 setting on the Torque Control Box The torque, in turn, depends on a K factor and the thickener diameter based on the following formula Torque ,...
Sakari Teerikoski
Optimal control of clarifier-thickeners Sakari Teerikoski A computer model for a general clarifier-thickener has been made and used for , rake torque as a secondary variable, which makes sense in particular for large thickeners such as the one mainly considered in this ,...
PDF Understanding the Thickening Process
PDF On Jan 1, 2006, B J Gladman and others published Understanding the Thickening Process We use cookies to make interactions with our website easy and meaningful, to better understand the use ....
Basic Torque Theory Physics Forums
Oct 02, 2011 0183 32 Depends on what you are asked to find If you are actually calculating the torque vector, then your result would be in the opposite direction to the actual torque For simple problems that are restricted to 2 dimensions rotation in a single plane , you may not even need the torque vector Clockwise versus counter-clockwise is often good enough...
Pulp, paste and putty thickeners and flocculants for high ,
The thickener mechanism generally will have more robust rake design with increased torque capacity compared to a high rate thickener with the same diameter Bojcic, 2000 The rake torque factor can be three to four times higher and will vary with underflow density according to an empirical relationship that depends on rake shape and drive ....
Instrumentation and Control of Sedimentation Equipment
Strategies for Instrumentation and Control of Thickeners and Other Solid-Liquid Separation Circuits Instrumentation and Control of Sedimentation Equipment Abstract Some of the process variables that are commonly monitored on a thickener are torque, rake height, bed level, bed pressure, feed rate and density, underflow rate and density, settling ....
THE HISTORY OF DORR
THE HISTORY OF DORR-OLIVER Dorr-Oliver began at the turn of the 20th century as two one-man operations, backed by , torque version of the thickener to sewage treatment Thus, the Dorr Clarifier, which began to build a market in 1914, eventually became a substantial share of the...
A study on model predictive control in paste thickeners ,
In computing the rake torque, information on solids concentration profile in paste thickeners is very important Therefore, linear and extended Kalman filters are developed and studied to determine a cost-effective approach to estimating the solids concentrations in the paste thickener The rake torque model is then validated with plant data...
CHAPTER 3 SLUDGE THICKENING
CHAPTER 3 SLUDGE THICKENING Thickening is a procedure used to increase the solids content of sludge by removing a portion of the liquid fraction To illustrate, if waste activated sludge, which is typically pumped from secondary tanks with a content of 08 solids, can be thickened to a content...
Conventional Gravity Thickeners
Cage drive units are suitable for larger thickeners and can provide the torque needed in heavy-duty thickening applications The cage drive is supported by a steel center column These units transmit torque from a fabricated steel drive unit with precision bearing and gear through a center cage of box truss construction...
Thickener for Gypsum Wastewater Treatment Monroe ,
High Torque Thickener Clarifier Monroe Circular Thickener for wastewater treatment at a gypsum plant The new clarifier system successfully replaced existing plate clarifiers which were misapplied and under performing given the dense, sticky sludge characteristics...
Drive Wheel Motor Torque Calculations
Drive Wheel Motor Torque Calculations Step Four Determine Total Tractive Effort The Total Tractive Effort TTE is the sum of the forces calculated in steps 1, 2, and 3 On higher speed vehicles friction in drive components may warrant the addition of 10 -15 to the total tractive effort to ensure acceptable vehicle performance...
Swing Lift Thickener
EIMCO-KCP Swing Lift thickeners are recommended for high scaling condition and to handle thixotropic solids This design uses cables attached to a truss above or near the liquid surface to move the rake arms, which are hinged to the drive structure, allowing the rakes to be raised when excessive torque is encountered...
Calculation of Torque for Design of Drive Gear
Aug 16, 2011 0183 32 You are right What i need is the torque needed to design the gear The motor i have chosen is 1 hp or 075 kw standard motor of 1440 rpm The final drive gear of 120 ratio is the one which needs to be designed since it is the final gearbox giving drive to shaft which holds the arms...
Improve Clarifier and Thickener Design and Operation
In Table I of the July article, improve Clarifier and Thickener Design and Operation, by Joel Christian pp 50-56 , the titles Vi and TSS are reversed The first TSS is 31 and the first Vi is 6045 In the overloaded case on p 55, the underflow c oncentration should be 240 kg/m 3, not 140 Also, the dashed line in Figure 9 is not used in ....
Clarifier Drive Torque Selection and Clarity by William H ,
May 25, 2012 0183 32 Clarifier Drive Torque Selection and Clarity by William H Boyle, PE , Gravity Thickener primary w/ secondary 20 - 30 Torque = L R 2 = foot pounds Radius R in ft There are times the skimmer could be hung up on the scum trough and possibly impart a torque to the center mechanism and subsequently to the drive unit This is not a major ....
Performance optimization of paste thickening
These measurements include density, the inventory level, overflow turbidity and rake torque measurements Parker et al, 2016 21 Density measurement Achieving the target underflow density is a major key performance indicator for a thickener, and hence it , Performance optimization of paste thickening ....
Industrial Drive Units
Paste Thickener Drive Paste thickener drives offer extra heavy-duty high torque designs to power the raking mechanism through heavy solids concentrations without the need of lifting the rak Thickening a stream to produce paste offers unique advantag...
Thickener optimization to reduce production costs ,
Rake torque lift For hydraulic rake drives, the hydraulic pressure needs to be measured to monitor process problems like insufficient underflow pump rate or blocked discharge outlets This generates either a shutdown or the rake lift to lower the torque Bed Height Bed height is often singled out and is the most valuable parameter because it reports the position of the settled bed...
Do you want the latest high capacity thickening technology ,
Do you want the latest high capacity thickening technology? Let Westpro give you the results you require Westpro TH138HC 138ft diameter Elevated high Capacity Thickener in Saskatchewan, Canada...
Raking in gravity thickeners Request PDF
Rake torque is a key issue in thickener operation and it was found that the yield stress of the suspension is the major factor in determining rake torque , In this paper we define and discuss a ....
Gravity Sedimentation Thickeners And Clarifiers
High-Rate Thickener Diameters are typically 140 ft or more with operating torques of 600,000 ft-Lbs This is a high throughput machine designed for large loadings Cable Torque Thickener The arm rake automatically raises when periods of heavy sludge are encountered...
Understanding Variable Speed Drives Part 2 Electrical ,
Torque is an applied force that tends to produce rotation and is measured in lb-ft or lb-in All loads have a torque requirement that must be met by the motor The purpose of the motor is to develop enough torque to meet the requirements of the load...
Picket Fence Thickeners Detail
Home >Products >Clarifiers Thickeners >Picket Fence Thickeners Detail Paramount Limited make Pickets fence thickener mechanism which is suitable for ,...
Outotec Thickening technologies
Outotec® Thickening technologies Leading edge technologies for thickening and clarifying Outotec is a global leader in the design, fabrication and supply of thickening and clarifying solutions for the minerals industry The revolutionary Outotec® High Rate Thickener has pioneered and redefined thickening and clarifying methods around the world...
Thickener Torque
A little earlier I talked about the rakes of the thickener, these are long arms that extend off of the bottom of the DRIVE SHAFT As the shaft turns the rakes will sweep the entire bed of the thickener thereby applied Torque Each rake arm is higher at its far end than it is where it joins the drive shaft This is designed this way to give the bed a slope towards the centre of the thickener...
Visual Encyclopedia of Chemical Engineering
A thickener/clarifier drive unit supplies the torque to rotate the rake arms through the thick sludge The drive is usually made of cast iron because of its durability Usage Examples Thickeners and clarifiers are often used in water and wastewater treatment plants to ,...
Beginners Guide to Thickeners
Beginners Guide to Thickeners Beginners Guide to Thickeners Thickening is a process where a slurry or solid-liquid mixture is separated to a dense slurry containing most of the solids and an overflow of essentially clear water or liquor in leaching processes...
Static thickener
Static thickener performance on biological sludge remains rather disappointing, explaining the popularity of dynamic thickening for use with this sludge setting up Classic mechanized thickener diameters range from 7 to 30 m Concrete structure floors have a slope of approximately 15 however this figure may be exceeded when heavy hydrophobic ....
OPERATION MAINTENANCE MANUAL
OPERATION MAINTENANCE MANUAL EQUIPMENT TWO 2 100 DIAMETER COP CLARIFIER MECHANISMS WESTECH MODEL COPC2 , TORQUE TEST PROCEDURES T-1 TORQUE TEST DIAGRAM TANK GROUTING PROCEDURES , Clarifiers Thickeners Rectangular Circular Drives Replacement Drives for Thickeners and Clarifiers Filters...
