| Customization: | Available |
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| After-sales Service: | Oversea Support |
| Warranty: | 1 Year |
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Working Principle
This machine operates based on the settling principle and is designed for the separation of solid and liquid phases in a suspension. The suspension enters the spiral pusher through the feed pipe, accelerates after passing through the accelerator, and then enters the drum. Under the influence of centrifugal force, the solid phase is thrown towards the inner wall of the drum. The spiral blades push the solid phase sediment through the slag discharge outlet. The lighter liquid phase is continuously clarified within the drum and flows towards the large end of the drum, exiting through the overflow outlet.
| Model |
LWD450x1000
|
| Working Speed | 3000 r/min |
| Differential Speed | 22-30 r/min |
| Processing Capacity | 45-60 m3/h |
| Main Motor Power | 37KW |
| Auxiliary Motor Power | 11KW |
| G-Force | 1220G |
| Weight | 3800kg |
| Overall Dimension | 2750x1580x2100mm |
1. Structure Of Drilling Mud Decanter Centrifuge
*Drum
The Drum Is Divided Into Cylindrical And Conical Sections And Has Components Such As The Large End Shaft, Differential,Connecting Plate, And Auxiliary Motor Belt Pulley On The Left End. The Right End Includes The Small End Shaft, Main Motor Belt Pulley, And Feed Pipe. Rib Strips Are Welded Inside The Drum To Prevent Material Slippage. It Has A Slag Discharge Outlet On The Small Cone End For Solid Phase Material Discharge, And An Overflow Outlet On The Large End Shaft To Control Liquid Clarity.
*Spiral Pusher
Comprising a cylindrical column section, material accelerator, baffles, spiral blades, and shafts, the spiral pusher's helix is double-ended and left-handed with a hard alloy surface. It connects to the differential and achieves solid-phase material discharge due to speed differences.
*Transmission Mechanism
This includes main and auxiliary motors, hydraulic couplings, belt pulleys, bearings, and a planetary gear differential. The differential is critical and uses a two-stage planetary gear transmission.
* Protective Measures:
To ensure safety, several protective measures are in place:
* Belt pulley-type hydraulic coupling ensures smooth operation and overload protection.
* Torque overload protection safeguards against material blockages.
* An inverter monitors and shuts down the centrifuge in case of overload
2. Installation And Adjustment
1)Place the main unit on a level surface without the need for anchor bolts.
2) Ensure ample workspace for operation, maintenance, and repairs.
3) Adjust the main motor's securing bolts to achieve proper belt tension.
4) Use the infinitely adjustable overflow plate to modify overflow radius and liquid pool depth as drilling fluid (mud) requirements change.
3. Operation & Use
Pre-Startup Preparation:
→ Check for loose connecting components and obstructions in moving parts.
→ Verify electrical circuit connections.
→ Inspect the differential and hydraulic coupling for oil leaks and ensure proper bearing lubrication.
→ Ensure water and feed valves are closed before starting the machine.
Start Up:
★ Turn on the main power and connect the supply.
★ Activate the "Main Unit Variable Frequency Power Switch" and "Auxiliary Unit Variable Frequency Power Switch."
★ Adjust the "Frequency Conversion/Work Frequency" switch to "Frequency Conversion." ★ Press "Auxiliary Unit Start" to confirm no unusual sounds, then start the main unit.
★ Press "Main Unit Start" and wait for the desired speed before starting the feed pump.
★ Press "Feed Pump Start" to begin material supply.
★ Gradually increase the feed rate, ensuring the current does not exceed 60A. In case of severe vibrations or anomalies, shut off the feed pump, open the water valve, and clean the drum and spiral pusher.
★ Check if the discharge is smooth; if not, clean the slag discharge valve.
Parameter Selection And Configuration:
The control cabinet comes with preset ABB inverter parameters. Adjust speed using the external "Main and Auxiliary Unit Speed Knobs" to control mud density and processing capacity.
For processing mud, adjust the "Main Unit Speed Knob" to manage density. Increase drum speed for higher density or reduce for lower density.
Set the main motor speed based on mud conditions, then adjust the auxiliary motor for desired slag discharge and separation efficiency. Gradually adjust differential speed to prevent tripping. After a fault, reset and press the reset button to restart the machine.
Shut Down:
(1) Press "Feed Pump Stop" to halt material supply.
(2) Open the water valve to clean the centrifuge for 10-15 minutes until clear liquid discharges.
(3) Press "Main and Auxiliary Unit Stop" buttons to shut down, then turn off the main power.
4. Faults & Solutions
| Symptom | Causes | Remedies |
|---|---|---|
| Excessive Centrifuge Vibration | Uncleaned interior of the drum, damaged balance; Failed shock absorber. | Clean the drum; Replace the shock absorber. |
| Motor Unable to Start | Zero line not connected in the inverter cabinet; Circuit break or damaged components. | Connect the zero line; Connect wires or replace electrical components. |
| High Temperature of Bearing Shaft (Above 75°C) | Insufficient lubrication or excessive lubrication; Damaged bearings. | Lubricate as per instructions; Replace the bearings. |
| Slag Discharge Blocked | Inappropriate overflow plate position; Overload protection activated; Low mud density with excessively low speed adjustment. | Adjust the overflow plate position; Reset the overload protection to its factory position; Increase the speed. |
| Abnormal Sounds in the Differential | Improper oil type and amount; Damaged bearings; Gear damage. | Adjust the oil type and amount as per instructions; Replace bearings; Replace gears. |
| Slurry Discharge Clearing out of the Discharge Port | Excessive slurry supply; Excessive differential speed adjustment. | Close the slurry supply valve; Reduce the differential speed or adjust the overflow plate. |
| Automatic Shutdown | Overload; Power failure. | Stop the feed pump and restart the centrifuge; Restore power. |
| Main Unit Cannot Start | Excessive mud accumulation in the drum causing blockage. | Lock the outer drum and manually rotate the auxiliary motor pulley until it can rotate easily for more than 20 turns, then restart the centrifuge and rinse with clean water before feeding mud again. |
| Model | LWD450*1000 | LWD450*1250 | LWD355*1250-1 | LWD355*1250-2 |
| Bowl diameter | 450mm | 450mm | 355mm | 355mm |
| Bowl Length | 1000mm | 1250mm | 1250mm | 1250mm |
| Bowl speed | 3000rpm | 3200rpm | 3200rpm | 3200rpm |
| Max Capacity | 50M3/H | 50M3/H | 40M3/H | 40M3/H |
| G-Force |
1220 |
2035 | 2035 | 2035 |
| Gear box speed |
40r/min |
30r/min | 30r/min | 30r/min |
| Gear box ratio | 35:1 | 57:1 | 57:1 | 57:1 |
| Main motor power | 30kw | 37kw | 30kw | 37kw |
| Auxiliary motor | 7.5KW | 7.5KW | 7.5KW | 7.5KW |
| EX Standard | EddIIBt4/IECEX/A-TEX | EddIIBt4/IECEX/A-TEX | EddIIBt4/IECEX/A-TEX | EddIIBt4/IECEX/A-TEX |
| Weight | 2700kg | 3200kg | 2900kg | 3200kg |
| Dimension | 2750x1580x2100mm | 2600*1860*1750mm | 2600*1620*1750mm | 2600*1620*1750mm |
Q1.What's your advantage? Why we choose you?
A:1) More than 40 years experience of centrifuge & separator production and R&D.We have the most professional techniques and team. More advantage in price
2)Great production capacity Sustainable Supply . According to customer requirements, We support the customized include package.
3)We use famouse good quality materials and the best production process
Q2.What's the Payment?
A:T/T would be better with quick transfer and few bank fees. LC could also be accept, but the
procedure is complex and the fee is high. You can also use Western Union and Paypal.
Q3.Are you a factory or trading company?
A:We are a professional manufacturer. We are warmly welcome clients from worldwide to visit our factory and cooperate with us.
Q4.How long is the warranty period ?
A:12 months.
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