Llw Horizontal Scroll Discharge Continuous Centrifuge

• Customization: Available
• After-sales Service: Provided
• Warranty: 1 Year
• Model NO.: LLW
• Type: Centrifuge
• Object: Iron Sulphate Heptahydrate
• Separation Mode: Filter Type
• Operating Type: Continuous Type
• Installation: Vertical
• Centrifuge Type: Screen Worm Centrifuge
• Pressure: Low Pressure
• Condition: New
• Control: PLC Control
• Operation: Automatic
• Material of Construction: Stainless Steel 304, 316L, etc
• Discharge: Scroll Discharge
• Shock Absorbing System: Rubber Shock Abaorber
• Motor Drive: VFD Drive
• Explosion-Proof: Optional
• GMP: Optional
• CIP: Optional
• Application: Iron Sulphate Heptahydrate
• Transport Package: Standard with Wooden Pallet and Poly Film Wrapping
• Specification: stainless steel
• Trademark: Tongze
• Origin: China
• HS Code: 8421199090
• Production Capacity: 200/Year

Product Description

PRODUCT DESCRIPTION
Horizontal Screen Worm centrifuge

Applications: nickel sulfate, cobalt sulfate, cobalt chloride, ammonium chloride, sodium chloride, sodium sulfate, manganese sulfate, copper sulfate, potassium sulfate, borax, ammonium phosphate, baking soda, sodium phosphate, crystal soda, thiosulfuric acid Ammonium, tartaric acid, coal slime, potassium chloride

LLW Horizontal screen worm centrifuge

LLWZ Horizontal thickening screen worm centrifuge

Separation principle: LLW horizontal screen worm centrifuge and LLWZ horizontal thickening screen worm centrifuge are continuous separation and filter with metal mesh. The drum of LLWZ model has a thickening area and a filtering area.

Working principle of LLW model: the suspension enters the filter chamber between the drum and the screw from the feed pipe, and enters from the bottom of the drum cone. Under the action of centrifugal force, the liquid phase in the slurry passes through the filter screen inside the drum. The solid phase is trapped in the drum, and moves from the small end of the drum to the large end under the centrifugal force and the differential speed between the screw and the drum. As the rotating diameter of the drum increases, the centrifugal force also increases, and the solid phase reaches the minimum moisture content from the initial high moisture content to the minimum moisture content when it is discharged from the drum, realizing automatic and continuous separation of solid and liquid phases.
LLW horizontal thickening screen worm centrifuge has high production efficiency due to its continuous filtration characteristics, continuous automatic feeding and discharging, especially suitable for materials with appropriate particle size and high solid content.

Working principle of LLWZ model: the suspension enters the settling bowl from the feed pipe first, and the material is first settled and concentrated through the settling principle, and the solid phase in the slurry settles on the bowl wall and moves to the small end under the action of the screw , the liquid phase is discharged through the overflow hole at the big end of the bowl, and the filter cake enters the filter drum after being concentrated while moving to the small end. Move towards big endian. As the rotating diameter of the drum increases, the centrifugal force also increases, and the trapped solid phase reaches the minimum moisture content from the initial high moisture content to the minimum moisture content when it is discharged from the drum, realizing automatic and continuous separation of solid and liquid phases. The filter cake can be washed and purified in the latter stage of filtration, and a thinner filter layer can obtain better washing effect and lower detergent consumption.
For materials that are prone to secondary crystallization, a steam pipe can be configured to clean the crystals in the inner cavity at high temperature according to the set cleaning cycle.
LLWZ horizontal thickening screen worm centrifuge has high production efficiency and high degree of automation because of its characteristics of concentrating first and then filtering. It is mainly suitable for materials with large processing capacity, low solid phase rate, and organic matter in the liquid phase.
The automatic control system controls the centrifuge, lubrication system, valves, pumps, valves, and material delivery systems related to the centrifuge.

The drum of LLWZ horizontal thickening screen worm centrifuge has a thickening section and a filtration section

Centrifuge system

Centrifuge system	Configuration
Centrifuge	Standard
Electric control box	Standard
Lubrication station	Thin oil lubrication/grease lubrication not matching
On-site operation box	Explosion-proof or not
Filter screen	Standard 1 piece, mesh filter accuracy requirements
Special tools	Standard
Spare parts	Agreement to order

Note: There are two types of lubrication: thin oil lubrication or grease lubrication, please specify when ordering

Conditions of use of the centrifuge

Conditions of use of the centrifuge	Parameter
Ambient temperature °C	-10~45; air relative humidity≯85%
Design temperature °C	-10~90
Design pressure mbar	100
Air source pressure bar	/
Washing fluid pressure bar	≥3
Main power	3-phase 5-wire system/50HZ/380V or according to local power supply
Nitrogen source pressure bar	2-3
Nitrogen purity	≥99.9%
Nitrogen flushing pressure (working condition) bar	3

Note: If nitrogen protection is configured, a nitrogen source is required

System

System	Standard configuration
Explosion-proof requirements	According to URS requirements
Feeding method	Feed pipe with washing branch, flushing branch
Discharge method	Scroll automatic pusher + scraper
Open form	Manual opening
Support and bearing	Flat multi-point support
Damping system	rubber shock absorber
Centrifuge driver	Inverter drive + belt drive
Differential drive	Planetary gearbox+ pulley set
Braking method	Resistance energy braking
Lubrication method	Thin oil lubrication or grease lubrication
System control method	PLC program control or frequency conversion direct control

Centrifuge technical parameters

Centrifuge Technical Parameters	LLW350	LLW450	LLWZ450	LLW530	LLW650	LLWZ650	LLWZ900
Drum inner diameter mm	350	450	Thickening big end 500 Filtration big end 450	530	650	Thickening big end 650 Filtration big end 600	Thickening big end 900 Filtration big end 850
Drum effective length mm	300	320	Thickening length 300 Filtration length 240	320	460	Thickening length 385 Filtration length 330	Thickening length 530 Filtration length 450
Drum speed r/min (max)	3000	2800	2700	2200	2000	2000	1350
Separation factor G (max)	1833	1974	Thickening 2037 Filtration 1833	1435	1455	Thickening 1455 Filtration 1343	Thickening 918 Filtration 865
Differential ratio	1:43	1:43	1:43	1:43	1:43	1:32.5	1:32.5
Differential speed r/min	max62.5	max62.5	max62.5	max62.5	max62.5	max62.5	max62.5
Differential torque Nm	3500	3500	3500	3500	3500	12000	18000
Drum cone angle°	2x10°	2x10°	2x10°	2x10°	2x10°	2x10°	Thickening 2x15° Filtration 2x10°
Filtration area m2	0.28	0.40	0.31	0.48	0.84	0.57	1.11
Residual filter cake thickness mm	0.8	0.8	0.8	0.8	1	1	1.2
Drum rotation direction	Clockwise (facing the direction of the door cover)
Motor, inverter power kw	11	22	30	30	37	55	75
Machine weight Kg	1650	2000	2500	2200	3500	4500	5500
Dimensions LxWxH	1555x1180x1705	1655x1280x1175	1810x1320x1190	1655x1280x1175	3000x1730x1550	2360x1710x1508	3000x2200x1700
Electric control box dimension LxWxH	800x600x1500
Lubrication system pressure Mpa	1
Lubrication station motor kw	0.55
Lubrication station dimension LxWxH	630 x520x710
Noise level dBA	85
external observation	Sight glass

Connection nozzle

Connection nozzle		LLW350	LLW450	LLWZ450	LLW530	LLW650	LLWZ650	LLWZ900
feed pipe		DN50	DN65	DN50	DN65	DN65	DN65	DN65
washing pipe		DN15	DN15	DN15	DN15	DN15	DN15	DN15
Inner chamber flushing port		DN15	DN15	DN15	DN15	DN15	DN15	DN15
Screen backwash port		DN15	DN15	DN15	DN15	DN15	DN15	DN15
overflow flush port		DN15	DN15	DN15	DN15	DN15	DN15	DN15
Outlet		700x200	800x200	800x200	800x200	1050x200	1060x280	1200x280
Liquid outlet		DN125	DN125	DN125	DN125	DN150	DN150	DN200
Thin oil lubrication	Grease port	M16x1.5
	Grease port (inner shaft)	M10x1 grease nozzle
	oil return port	Ø38 Hose Connector
	Nitrogen filling port of bearing cavity	Ø10mm gas connector
Grease	Grease port (outer shaft)	M10x1 grease nozzle
	Grease port (inner shaft)	M10x1 grease nozzle
Gearbox oil port		M18x1.5 screw plug	M18x1.5 screw plug	M18x1.5 screw plug	M18x1.5 screw plug	M18x1.5 screw plug	M18x1.5 screw plug	M18x1.5 screw plug

Note 1: The discharge port (solid phase outlet) above is the standard factory configuration, and the external discharge port can be customized according to user requirements
Note 2: Flange according to HG/20615-2009 Class150 series
Note 3: There are two lubrication methods, thin oil lubrication and grease lubrication, which need to be specified when ordering

Outline drawing of LLW centrifuge

Outline drawing and structure drawing of LLWZ centrifuge
 

Thickening section, filtration section double outlet form

 

1. gearbox, drive belt, 2. bearing housing, 3. outer shaft, 4. inner shaft, 5. overflow port assembly, 6. drum bottom assembly, 7. internal screw assembly, 8. drum shell, 9. filter screen, 10. external screw assembly, 11. filter press plate/scraper, 12. casing, 13. filter backwash, 14. feed pipe/washing pipe assembly, 15. door cover, 16. vent port, 17. liquid outlet, 18. solid outlet


Lubrication station (independent lubrication station for configuration of thin oil lubrication method)

Screen replacement
     Screen material: 316L, 2205, 2507, 904L, C276, C22, HB, B3

Mesh	Particle size mm	Gap a
180	0.08	0.08
120	0.12	0.13
80	0.18	0.18
65	0.23	0.23

LLW, LLWZ centrifuge installation form

 

The centrifuge can be installed directly on the floor. The discharge port of the centrifuge is provided with a discharge port on the floor. The discharge hopper of the centrifuge is located at the lower part of the floor and can be connected to the silo or conveying device through a soft connection.
If it is installed on the bottom floor, it is necessary to set up the installation bracket and the centrifuge to be elevated, so that the discharge port has a sufficient height from the ground for receiving materials. The specific height is determined according to the material receiving method.
For elevated installation, a safety fence should be provided around the centrifuge plate.
The pipe connections of the feed pipe, washing pipe, liquid outlet pipe, and discharge port of the centrifuge should be connected by hoses.
For the installation requirements of the centrifuge, please refer to the relevant technical requirements of Tongze.