mud agitator manual free sample

1. OverviewThis manual provides installation, operation, and maintenance instructions for AIPUmud agitators. The manual is divided into several parts to assist the user inreadilyaccessing the information.

Personnel responsible for transporting, installing, commissioning, operating, or performingmaintenance on this equipment are required to read and understand the instructionsprovided in this manual. One copy of this manual should be available and accessible at theequipment location.

2. Safety instructionsAll persons responsible for operation and maintenance of this equipment must read andunderstand all safety information in this manual prior to operating and/or maintaining theequipment. The safety warnings listed below are included in applicable proceduresthroughout this manual.

a. While operating agitator without/with load, add qualified lubricating oil to required oillevel into worm gearbox.b. To ensure proper balance and orientation when unit is raised and prevent damage tocomponents, attach lifting sling only between motor and gear drive. Do not attempt Liftingby attachment to eyebolt on motor or any other Location.c. Be sure that handling devices have sufficient lifting capacity to safely handle the weightof the equipment.d. Clarify the correct direction of agitator before usage.e. To avoid serious personal injury of un-expected motor startup, be sure equipment islocked out, tagged out, and de-energized prior to install / or maintenance and/or

ApplicationAPMA series mud agitator is one of the important equipment for mud system. It ismainly used for agitating drilling fluids, avoid particle in fluids deposit to tank bottom.It is high-efficiency mud-mixing units offered in a wide array of custom sizes andconfigurations to accommodate virtually any mud tank. The horizontal drive is designedfor installations having limited space above the mud tank.

The mud agitator stirs mud slurry to maintain suspension of solids. The agitator is mountedon top of the mud tank and has one or two impeller(s) immersed in the mud slurry. Theimpeller shaft is directly coupled to an electric drive motor that is available in severalhorsepower ratings from 7.5 to 25.

AIPU does not authorize any other use of this equipment, intended usage of theequipment includes compliance with the operating, maintenance, and safety instructionsprovided in this manual。

Mud agitator design should be based on tank dimension, inner depth and mudcondition. AIPU horizontal agitators utilize worm gear reducer. Welding type or castingtype impeller for option.The impeller is fixed to the shaft with bolts to avoid rotating or sway (connection with keygroove optional). Its vertical location on the shaft is determined as a height from the tankbottom corresponding to the impeller diameter times 0.75. For example, a 20” impellershould be mounted 15” above the bottom. AIPU recommends straight impeller bladesfor

Features a. Utilize worm gear reducer. Compact design, perfect joggle and reliable operation. b. Worm gear reducer combined with explosion-proof motor, which enable stable performance in wild severe environment. c. Input shaft of explosion-proof motor are connected to gearbox with elastic coupling directly, rather than belt-drive. It enables stable speed of impeller. d. The mud agitators are high-efficiency mud-mixing units offered in a wide array of custom sizes, and configurations to accommodate virtually any mud tank. It is to avoid over-load of current during start up motor. e. Horizontal type of motor. It is convenient for installation, adjustment or replacement. Main parameters of agitator

Casting type 600mm 700mm Up:600mm Up:700mmimpeller, Down:600mm Down:600mm(Standard) 25:1 25:1 25:1 25:1RationOverall 900*700*600m 900*750*610mm 1100*840*705m 1200*1000*760mdimension m m m(L*W*H) 380V/50HZ Or 460V/60HZ, or customizedElectric SpecsShaft length and Customized shaft according to tank inner depth / mud condition optionalimpeller Explosion-proof motorRemarks Shaft stabilizer available Customized impeller diameter available

Major components AIPU mud agitator is made of explosion-proof motor, worm gear reducer. impeller, mounting plate, elastic coupling, and rigid coupling. Explosion-proof motor and worm gear reducer installed on mounting plate. Elastic coupling connect explosion-proof motor input shaft and gearbox input shaft. Impeller shaft and gearbox output shaft are connected by rigid coupling. Although the arrangement mud agitator components is identical across the various sizes and configurations, the drive motor, impeller, shaft length and diameter, gear drive, and motor orientation vary between models. Figure 2 shows the typical components of a mud agitator. The configuration for the same power rating is identical, except for the type of ear drive. The unit is shipped unassembled and requires assembly by a trained, qualified technician.

25 horsepower with customized hz and voltage; the power requirements are specified onthe customer order. Electric power, switching, and safety devices are provided by thecustomer.AIPU can offer starter for agitator as request. All components come from Siemensof Schneider.

ImpellerImpellers are available in diameters ranging from 20” to 52” to meet the needs of varioussize mud tanks. The impeller diameter is generally determined by the size of the tank.Larger or deeper tanks employ dual impeller units having a secondary impeller mountedcloser to the mud surface. The impeller is mounted on the shaft using a tapered lockingbushing. A bolt / key inserted in the impeller shaft locks the impeller to the shaft andprevents rotation. Canted impeller blades are desirable near the bottom of tanks more than5’ deep or where other forces of flow factor may be absent in the tank.

5. Model selection and installationBefore installation / disassembly, read and understand ALL safety information presented inthis manual and associated documents. Review the equipment handling procedures in themanual. Pay particular attention to information concerning “lift points” and the use ofspreader bars before lifting or moving the equipment.Failure to observe proper equipment handling procedures may result in serious personalinjury and/or damage to the equipment.

SizingFor proper mixing and suspension of solids, the mud agitator must be properly sized andinstalled. To properly size a mud agitator, proceed as follows:1. Select desired style – horizontal with welded / casting impeller2. Determine available electric power - 440V/460V/380，60HZ , 380V/400V/415V，50HZor customized.3. Select horsepower and impeller(s) as determined by the following factors:a. Tank design - round or squareb. Tank dimensionsc. Maximum mud weightd. Desired turnover ratio (TOR)

After gathering the required information, the agitator can be properly sized to meet thehorsepower demand and correct agitation for the application. To ensure accuratesizing, AIPU recommends clients to communicate with AIPU people to make sure sizeand model.Following are operational recommendations for mud agitators:1. Maintain uniform tank dimensions, i.e. equal width-to-length ratio or as close aspossible to equal.2. Avoid TOR values greater than 85 seconds, as this may jeopardize solids suspension.3. Avoid TOR values less than 40 seconds, as this may result in formation of a vortex andincrease air entrapment.

InstallationFollowing are the sequential steps of the mud agitator installation procedure. The sequencepresented is a guideline and may vary depending on the user’s facilities, previousexperience with this equipment, and optional equipment.1. Read and understand all safety information & handling procedures in this manual, andidentify the mud agitator components.2. Locate and weld mounting plate and stabilizer (if required) to tank structure.3. Place shaft in tank, and assemble impeller(s), tapered bushings, and male coupling onshaft.4. Install female coupling on gearbox shaft.5. Install motor and gearbox assembly, and attach shaft coupling to gearbox coupling.6. Connect electric power supply to drive motor.

LevelingTo prevent undue premature wear on the gearbox or coupling and ensure long-termreliability and efficiency of the mud agitator, the impeller shaft should rotate in a truevertical orientation. This vertical installation is achieved by ensuring that the mountingplate is absolutely horizontal. If a stabilizer is used, it must be directly aligned with the

center of the mounting plate. The following paragraphs describe the correct methods forinstalling the mounting plate and stabilizer.Agitator mounting dimension as showed as following.

Impeller assemblyInstall impeller with shaft, fixed with M14x140 bolt (2 bolts for each set of impeller) Theimpeller mounting location is kept by AIPU before delivery.For a canted single impeller or a dual impeller shaft, AIPU sets the distance of the lowerimpeller from the tank floor at 75 percent of the impeller diameter. Mount the optionalsecond impeller at a distance above the tank floor that is equal to 2/3 of the tank’smaximum mud height. For example, if the tank mud depth is 10’, the second (upper)impeller key should be centered approximately 6.5’ above the bottom of the tank. For tankdepths of 6’ or less, install a single straight impeller not more than 12” above the tankfloor.

7. Storage & handlingIf the machine will not be installed immediately, it should be covered with a tarpaulin(tarp). If unit is stored outdoors, use a UV- resistant tarp, or UV-resistant shrink-wrap.Install vents when using shrink-wrap. Seal operating and maintenance manual in plastic,and attach to unit.AIPU mud agitators are shipped disassembled except for motor and gearbox, which aresupplied as an assembly. All components including shaft are packaged in a sea/air worthywooden case.The delivered equipment should be transported on the ground using a forklift, lifting lugsas showed as fig.8.

This section contains initial and normal startup and shutdown procedures for the mudagitator. These procedures are designed to ensure safe operation and shutdown of theequipment.

Normal startup and operationAfter the initial startup, the mud agitator is started up and operated as follows:1) Verify that all personnel, tools, documents, and other material are clear of equipment.2) Turn on the mud agitator, and then open the associated mud feed and outlet systems.3) Observe the operation of the impeller shaft assembly as the tank fills with mud andverify continuous rotation of impeller(s).

Normal shutdown procedureTo shut down the mud agitator for any reason, first shut off the mud feed and then turn offelectric power to the agitator motor.

GeneralRoutine maintenance is critical to ensure maximum life and trouble-free operation of themud agitator. While the recommended maintenance schedule in this section is flexible,modifications should be based on experience with operating the equipment at yourfacilities. A maintenance log should be kept to help establish a routine maintenanceschedule, as well as to monitor and adjust the schedule as necessary throughout theequipment’s life. When determining a suitable maintenance schedule, consider duty cycle,ambient temperature, and operating environment.

10. TroubleshootingIf mud disturbance in the tank becomes unsatisfactory, check the possibilities listed belowand correct as described.PROBLEM POSSIBLE CAUSE REMEDYOver-temperature Motor and gearbox not installed Adjust to suitable position, suitably enable motor and gearbox axes concentric Abnormal abrasion of oil seal Trickle lubricating oil at oil seal ledge Lubricating oil too much or less Adjust oil quantity baseds on oil level plug Lubricating oil not pure, or not Replacing with new oil workable wellToo much Motor and gear box not fixed well Check and find out the loosingvibration and point, fasten correctlynoise worm gear supplementary tooth badly Replacing worm gear worn/ damaged supplementary tooth (connect AIPU) bearing badly worn or disabled Replacing bearing Linking bolts for coupling and agitator Fasten or replacing bolts output plate pull off, or foundation bolts pull off Impeller shaft bended or deformed Align the shaft Impeller local distortion or broken off Repair or replace impellerWorking current worm / gear in gearbox badly worn Inspection gearbox gradually,fluctuated greatly repair or replace relative parts Far-forth top circle of shaft rubbed with Align shaft or re-install stabilizer inner wall stabilizer

resold without alteration, which are covered by warranty from the original manufacturer. e. Failures due to abuse, misuse, or lack of proper recommended maintenance. f. Failures of equipment, which has in any way been repaired or altered except asauthorized by AIPU or equipment using components manufactured or repaired by anyother party than AIPU unless expressly authorized by AIPU. The foregoing warranty shall be herein referred to as the “Agitator Warranty”. TheMud Agitator Warranty is for the exclusive benefit of Purchaser. THE AGITATOR WARRANTY CONSTITUTES AIPU’S SOLE ANDEXCLUSIVE WARRANTY WITH RESPECT TO ANY AGITATOR PURCHASEDHEREUNDER, EXCEPT FOR THE AGITATOR WARRANTY, AIPU HEREBYDISCLAIMS ALL EXPRESS WARRANTIES (WHETHER ORAL, WRITTEN ORARISING BY PROMISE, DESCRIPTION OR SAMPLE) AND ALL IMPLIEDWARRANTIES, INCLUDING, WITHOUT LIMITATION, WARRANTIES OFNON-INFRINGEMENT, ANY WARRANTY OF MERCHANTABILITY ANDFITNESS FOR ANY PARTICULAR PURPOSE, AND ALL WARRANTIES

Purchaser represents that it has evaluated the AIPU Agitators in light of theAgitator Warranty and has determined that the AIPU Agitator are fit and sufficient forPurchaser’s operations (including the Processing applications). Purchaser acknowledgesthat it is solely responsible for evaluating and choosing the sites where the AIPUAgitator will be installed and the manner in which AIPU Agitators will be used. AIPU does not warrant that the Environmental Protection Agency (“EPA”) or anyother regulatory authority has approved or certified the AIPU Agitators for any purpose. Purchaser assumes any risk, burden and/or costs of EPA or their regulatorycompliance with respect to any AIPU Agitator acquired pursuant to this Agreement. AIPU has made no inspection of the sites where Purchaser intends to installthe Centrifuges and disclaims any warranties with respect to installation of the AIPUAgitators. Purchaser shall use its best efforts to ensure that all persons or entities rentingor leasing AIPU Agitators are informed of the foregoing exclusive warranty and warrantydisclaimer.

GN Solids Control Equipments: Shale Shaker, Mud Cleaner ,Desander ,Desilter, Centrifuge, Agitator, Mixing Hoppers, Flare Igniter, Various Tanks, Pumps, Degassers etc.

CONTENTS Complete Line Equipments................................................................................................................ 2 Section 1-Overview ................................................................................................................................... 6 1.1 Operation Instructions .................................................................................................................. 6 1.2 Application ................................................................................................................................... 7 1.3 Features ........................................................................................................................................ 8 1.4 Main parameters of agitator ......................................................................................................... 8 1.5 Usage of mud agitator .................................................................................................................. 8 Section 2- Structure And Operation Principle ........................................................................................... 9 2.1 Drive Motor ............................................................................................................................... 11 2.2 Gear Drive.................................................................................................................................. 11 2.3 Impeller ...................................................................................................................................... 11 2.4 Main parts list for different agitator models .............................................................................. 12 Section 3- Model selection and Installation ............................................................................................. 14 3.1 Model selection .......................................................................................................................... 14 3.2 Operation Attentions .................................................................................................................. 14 3.3 Installation ................................................................................................................................. 15 3.4 Gearbox lubricant level .............................................................................................................. 19 3.5 Electrical connections ................................................................................................................ 20 3.6 Storage & handling .................................................................................................................... 21 Section 4- Machine start up & shutdown ................................................................................................. 22 4.1 Initial startup .............................................................................................................................. 22 4.2 Normal startup and operation..................................................................................................... 22 4.3 Normal shutdown procedure ...................................................................................................... 23 4.4 Emergency shutdown ................................................................................................................. 23 Section 5- Maintenance............................................................................................................................ 24 5.1 Routine maintenance .................................................................................................................. 24 5.2 Gearbox lubrication ................................................................................................................... 24 Section 6- Troubleshooting & Solution ................................................................................................... 26 Section 7- Terms of warranty .................................................................................................................. 28 Section 8- Installation and maintenance log ............................................................................................ 30

Section 1-Overview This manual provides installation, operation, and maintenance instructions for GN mud agitators. The manual is divided into several parts to assist the user inreadily accessing the information. Personnel responsible for transporting, installing, commissioning, operating, or performing maintenance on this equipment are required to read and understand the instructions provided in this manual. One copy of this manual should be available and accessible at the equipment location. For machine safety and performance, no additions and/or changes may be made to the equipment without the explicit written permission of GN Solids Control. Genuine GN repair/replacement parts are required。

understand all safety information in this manual prior to operating and/or maintaining the equipment. The safety warnings listed below are included in applicable procedures throughout this manual. a. Read operation manual before operating b. Confirm the oil level in the oil window middle position before starting up. c. To ensure proper balance and orientation when unit is raised and prevent damage to components, attach lifting sling only between motor and gear drive. Do not attempt Lifting by attachment to eyebolt on motor or any other Location. d. Lift specified lifting points to move devices! Ensure that equipment installation fastening, reliable; Fasten all assembly bolt group once a month. Replace lubricates in the gear box every 1000 hours, Brand of lubricating grease: Mobil:150#.; replace grease in the motor every 2500 hours, Brand of lubricating grease: Mobil:EP2. e. Clarify the correct direction of agitator before usage. f. To avoid serious personal injury of un-expected motor startup, be sure equipment is locked out, tagged out, and de-energized prior to install / or maintenance and/or adjustments. DO NOT operate the equipment if defective or faulty mechanical or electrical components are detected.

1.2 Application GN JBQ series mud agitator is one of the important equipment for mud system. It is mainly used for agitating drilling fluids, avoid particle in fluids deposit to tank bottom. GN does not authorize any other use of this equipment, intended usage of the equipment includes compliance with the operating, maintenance, and safety instructions provided in this manual。

1.3 Features GN JBQ series mud agitator has below features: a. Utilize worm gear reducer. Compact design, perfect joggle and reliable operation. b. Worm gear reducer combined with explosion-proof motor, which enable stable performance in wild severe environment. c. Input shaft of explosion-proof motor are connected to gearbox with elastic coupling directly, rather than belt-drive. It enables stable speed of impeller. d. The mud agitators are high-efficiency mud-mixing units offered in a wide array of custom sizes, and configurations to accommodate virtually any mud tank. It is to avoid over-load of current during start up motor. e. Horizontal type of motor. It is convenient for installation, adjustment or replacement.

1.5 Usage of mud agitator It is high-efficiency mud-mixing units offered in a wide array of custom sizes and configurations to accommodate virtually any mud tank. The horizontal drive is designed

for installations having limited space above the mud tank. The mud agitator stirs mud slurry to maintain suspension of solids. The agitator is mounted on top of the mud tank and has one or two impeller(s) immersed in the mud slurry. The impeller shaft is coupled to an electric drive motor with coupling. iT is available in several horsepower ratings from 7.5hp to 20hp (5.5kw ~ 15kw). Normally, below 11kw agitator, single impeller usually be matched. Above 11kw, double impeller better. Details design should be based on the user’s request and jobsite condition. The impeller is fixed to the shaft with bolts to avoid rotating or sway (connection with key groove optional). Its vertical location on the shaft is determined as a height from the tank bottom corresponding to the impeller diameter times 0.75. For example, a 20” impeller should be mounted 15” above the bottom. GN recommends straight impeller blades for tanks under 5’ deep and canted blades for deeper tanks. If dual impellers are desired, straight blades are mounted on the bottom and the canted blade impeller is installed at a point about two-thirds above the tank bottom. The keyed motor and driven impeller shafts are rigidly connected by a multi-piece coupling, which uses tapered locking bushings to secure the shafts together. Shaft lengths are customized to suit customer specifications. For shafts longer than 8’, a stabilizer is mounted on the tank bottom to support the lower end of the shaft.

mounting plate, elastic coupling, and rigid coupling. Explosion-proof motor and worm gear reducer installed on mounting plate. Elastic coupling connect explosion-proof motor input shaft and gearbox input shaft. Impeller shaft and gearbox output shaft are connected by rigid coupling. Although the arrangement mud agitator components is identical across the various sizes and configurations, the drive motor, impeller, shaft length and diameter, gear drive, and motor orientation vary between models. Figure 2 shows the typical components of a mud agitator. The configuration for the same power rating is identical, except for the type of ear drive. The unit is shipped unassembled and requires assembly by a trained, qualified technician.

2.1 Drive Motor The mud agitator is operated by a 3-phase induction motor. Drive motors range from 7.5 to 20 horsepower with customized hz and voltage; the power requirements are specified on the customer order. Electric power, switching, and safety devices are provided by the customer. GN can offer starter for agitator as request. All components come from Siemens of Schneider.

2.3 Impeller Impellers are available in diameters ranging from 650mm to 1100mm to meet the needs of various size mud tanks. The impeller diameter is generally determined by the size of the tank. Larger or deeper tanks employ dual impeller units having a secondary impeller mounted closer to the mud surface. The impeller is mounted on the shaft using a tapered locking bushing. A bolt / key inserted in the impeller shaft locks the impeller to the shaft and prevents rotation. Canted impeller blades are desirable near the bottom of tanks more than 1500mm (5’) deep or where other forces of flow factor may be absent in the tank.

Section 3- Model selection and Installation Before installation / disassembly, read and understand all safety information presented in this manual and associated documents. Review the equipment handling procedures in the manual. Pay particular attention to information concerning “lift points” and the use of spreader bars before lifting or moving the equipment. Failure to observe proper equipment handling procedures may result in serious personal injury and/or damage to the equipment.

3.1 Model selection For proper mixing and suspension of solids, the mud agitator must be properly sized and installed. To properly size a mud agitator, proceed as follows: 1). Select desired style – horizontal type 2). Determine available electric power - 440V/460V/380, 60HZ , 380V/400V/415V, 50HZ or customized. 3). Select horsepower and impeller(s) as determined by the following factors: a. Tank design - round or square b. Tank dimensions c. Maximum mud weight d. Desired turnover ratio (TOR) After gathering the required information, the agitator can be properly sized to meet the horsepower demand and correct agitation for the application. To ensure accurate sizing, GN recommends clients to communicate with GN people to make sure size and model.

3.2 Operation Attentions Following are operational recommendations for mud agitators: 1. Maintain uniform tank dimensions, i.e. equal width-to-length ratio or as close as possible to equal.

3.3 Installation Following are the sequential steps of the mud agitator installation procedure. The sequence presented is a guideline and may vary depending on the user’s facilities, previous experience with this equipment, and optional equipment. 1. Read and understand all safety information & handling procedures in this manual, and identify the mud agitator components. 2. Locate and weld mounting plate and stabilizer (if required) to tank structure. 3. Place shaft in tank, and assemble impeller(s), tapered bushings, and male coupling on shaft. 4. Install female coupling on gearbox shaft. 5. Install motor and gearbox assembly, and attach shaft coupling to gearbox coupling. 6. Connect electric power supply to drive motor.

Leveling To prevent undue premature wear on the gearbox or coupling and ensure long-term reliability and efficiency of the mud agitator, the impeller shaft should rotate in a true vertical orientation, with concentricity

© Copyright 2003 Varco International, Inc. Publication date: August 21, 2003 Brandt is a registered trademark of Varco International, Inc. All other product, brand, or trade names used in this publication are the trademarks or registered trademarks of their respective owners. All rights reserved. This publication is the property of, and contains information proprietary to Varco International, nc. No part of this publication may be reproduced or copied in any form, or by any means, including electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of Varco International, Inc. Information in this manual is subject to change without notice.

Intended audience This manual is intended for use by field engineering, installation, operation, and repair personnel. Every effort has been made to ensure the accuracy of the information contained herein. Brandt®, a Varco company, will not be held liable for errors in this material, or for consequences arising from misuse of this material.

Conventions Notes, cautions, and warnings Notes, cautions, and warnings appear throughout this manual to provide you with additional information, and to advise you to take specific action to protect personnel from potential injury or lethal conditions. They may also inform you of actions necessary to prevent equipment damage or conditions that may void your warranty. Please pay close attention to these advisories.

Safety requirements Brandt equipment is installed and operated in a controlled drilling rig environment involving hazardous operations and situations. Proper service and repair is important for safe and reliable operation. Operation and service procedures provided by Brandt manuals are the recommended methods of performing those operations. To avoid injury to personnel or equipment damage, carefully observe the following safety requirements.

Local codes may apply. Please consult them prior to performing any operation. The presence of a Brandt representative at the site does not relieve the owner/ operator of responsibility to follow published installation, operation, and maintenance instructions. The equipment discussed in this manual may require or contain one or more utilities, such as electrical, hydraulic, pneumatic, or cooling water. Before installing or performing maintenance or repairs on equipment, read the following instructions to avoid endangering exposed persons or damaging equipment.

Maintenance Equipment must be maintained on a regular and routine basis. See the service manual for maintenance recommendations. Failure to conduct routine maintenance could result in equipment damage or injury to personnel.

Introduction HMA series agitators are heavy-duty mechanical mixers for viscous fluids specially designed for seal type tanks. Several models are available to meet a variety of mixing needs. The naming convention for these models is: HMA-X where X = the horsepower of the unit. For example, HMA-20 is the 20 hp mud agitator for seal type tanks. Each HMA series agitator uses a pipe-spool shaft and impeller(s) to maintain a homogeneous mixture of liquids and solids within a tank. Impellers have contour blades (axial flow), and may be installed in multiple configurations to provide the desired results. The impeller shaft is suspended from and attached to the output shaft of the low-profile, skid-mounted gearbox. The gearbox uses a worm-worm gear drive system to reduce the rotational speed of the explosion-proof motor to drive the impeller(s). HMA series agitators are available in models ranging from 25 to 40 horsepower, and can be seal base unit or shaft seal units. Impellers range from 54 inches (1372 mm) diameter to 84 inches (2134 mm) diameter.

Motor The motors used on Brandt mud agitators are explosion proof, T-frame, three-phase electric motors directly coupled to the gearbox using a flexible coupling with a solid steel guard. Motors are available for most voltage/frequency requirements. Other electrical code styles and temperature ratings are also available.

Gearbox The gearbox is a triple reduction worm-worm gear drive, reducing the motor speed (900 rpm @ 60 Hz) to the agitator speed (30 rpm) in a single 30:1 reduction. The gearbox contains an output shaft, two seals, and four to six bearings in addition to the worm-worm gear. The bearings are spaced to minimize shaft vibration and deflection, and seals are readily obtainable standard sizes. Unlike many competing agitators, Brandt’s gearbox requires no manual lubrication of the bottom output bearing.

Contour-blade impellers On contour blade impellers (Figure 2-1), the blades are designed with a variable pitch reducing the horsepower requirements and inducing less shear to the mud. Contour blades move liquid downward to the bottom of the tank, along the tank bottom toward the tank walls, and then up the tank wall. All fluid in the tank is mixed continuously, and the same consistency is maintained in all parts of the tank. Field experience has confirmed that this design provides the most homogeneous mixture in the widest range of installations. Fluid agitation minimizes fluid control problems caused by inconsistent mixtures.

Impeller shaft HMA standard impeller shafts are manufactured of eight-inch pipe spools. The impeller shaft is coupled to the gearbox with a rigid coupling. Shaft length is determined by tank depth. When ordering impeller shafts, always specify the actual tank depth. Tank depth is defined as the distance from the bottom of the tank to where the agitator is mounted.

Bottom shaft stabilizer A bottom shaft stabilizer is required to reduce side loading on the gearbox bearings. The stabilizer also protects the agitator shaft and impeller when auxiliary equipment is carried inside the mud tank during rig moves.

The greases shown in this manual are given as examples of appropriate greases. Any other grease that meets the standards of the National Lubricating Grease Institute (NLGI) is acceptable.

2. Impeller rotation: The impeller should rotate clockwise when viewed from top. 3. Oil fill/breather plug: plug must be clear of any obstruction to prevent pressure build-up and possible seal damage. 4. Agitator should operate with no vibration. 5. Check rubber insert on input shaft coupling for wear and cracks. 6. For optimal performance, change the oil after the first five days of operation.

1. Inspect for oil leaks. 2. Keep motors clean and ventilation opening clear of mud build-up or other debris. 3. Check impeller shaft coupling for proper make-up.

Offshore drilling refers to a mechanical process of drilling mud to extract petroleum or natural gas through a wellbore in the seabed. The mud is a mixture of oil (or water) and bulk materials (barite, bentonite, polymer, etc.) and it has high viscosity. It can be used to remove cuttings, provide hydrostatic pressure, and cool down or lubricate the drill bit. There are many different types of facilities where offshore drilling operations take place, and the core system is a drilling system that is mainly maintained by mud-handling and bulk-handling systems.

When a drilling operation is being performed, many physical and chemical changes occur in the wellbore. In order to handle many changes in the well conditions and maintain the drilling process, bulk additives are added to drilling mud through a mixing system. Examples of additives include bentonite for increasing the density of the drilling mud, barite for increasing the viscosity, polymer for chemical control, surfactants, etc. In this process, a mud agitator performs the function of mixing both the mud and bulk, which are pre-mixed in a mud tank, and the homogeneous material properties are maintained using the swirling motion of a mechanical impeller. The achievement of required material properties through the mud agitator is essential to stabilize a drilling system. Thus, it is important to analyze the multi-phase flow and system and guaranteeing safety.

There have been some experimental and numerical investigations for the design of agitators, including fundamental experiments regarding the change geometric shape of the impeller (Nagata et al., 1959), performance of agitation with various sizes of the impeller (Nienow, 1997), and experiments in regard to change torque and position of impellor with 45° pitched blades (Chang and Hur, 2000; Choi et al., 2013). Experimental measurement was done using a laser Doppler velocimeter (LDV), and numerical simulation was done for the flow patterns in an agitator relating to its geometric shape and power of agitation (Kumaresan and Joshi, 2006). Unsteady numerical simulation was done with a free surface in an agitator (Ahn et al., 2006), and a solid-liquid multiphase simulation was done using a granular flow model in the commercial software ANSYS-Fluent for multiphase interaction (Darelius et al., 2008). Numerical simulations were done to predict the solid particle distribution in an agitator using various baffle types (Kim et al., 2009) and various impeller speeds (Wadnerkar et al., 2012), and a numerical simulation was done for particle distribution in an agitator using the commercial software STAR-CCM+ (Lo, 2012; Kubicki and Lo, 2012), etc..

In summary, many experimental investigations have been performed to design an agitator and predict the solid particle distribution in a stirred tank using an experiment, and it seems to be difficult to predict the mixing performance and to conduct an experiment directly for high-viscosity fluids. As an alternative way, computational fluid dynamics (CFD) simulations have also been carried out for predicting the performance of an impeller and the distribution of solid particles inside a mixing tank. However, for more practical application of a mud agitator to some equipment in an offshore plant, a multiphase simulation of solid-liquid flow should be performed with high-viscosity mud inside the tank.

In the present study, the numerical simulation of swirling and liquid-solid multiphase flow around a mechanical agitator system was carried out to investigate the distribution of bulk particles in a system using commercial CFD software, STAR CCM+ ver.8.04, based on an Eulerian-Eulerian approach. First, for verifying the CFD tool, water mixing problems for a model-scale agitator were simulated with various turbulence models, and the results of the simulation for the velocity components around the impeller were compared to those of experiments performed by Guida et al. (2009) and Guida (2010). Next, the liquid-solid multiphase flow in a mud agitator was simulated with different multi-phase interaction models, and both the velocity profile and solid concentration were compared with the experiments (Guida et al., 2009) and another numerical simulation (Kubicki and Lo, 2012). Finally, the liquid-solid multiphase flow in a mud agitator was simulated under properly adopted simulation conditions. The prediction of the mixing time and distribution of bulk particles in the mud agitator are discussed.

When you need to gain rapid access to the essential wholesale mud agitator mixer supplies that your business relies on, head to Alibaba.com where you"ll find thousands of Chinese wholesalers ready to provide the equipment, materials, consumables and products that you need to run your business. From mud agitator mixer supplies that cover all technical specifications through to associated products and office consumables, you can buy everything that your business needs in one place at Alibaba.com.

Simply use the search filters and categories to swiftly find details of mud agitator mixer prices, specifications, order volumes, lead times, discounting arrangements and more. See what other customers thought of individual wholesalers with the customer review feature and see images of operations, markets served and more. You can even chat instantly with sales and support or send an email at any time of day.

Ready to make your mud agitator mixer order? Just do so in a few clicks in your private account area and you"ll receive regular updates on your shipment so that you know exactly where it"s at in the world until it arrives at your business! It"s swift, convenient and cost-effective to shop at Alibaba.com where you"ll find everything that your business needs to operate smoothly and without delay.