Horizontal screw centrifuge

Wuchang environmental protection WHLW series decanter centrifuge, also known as horizontal spiral unloading sedimentation centrifuge, is a special solid-liquid separation equipment specially developed and designed for the different material characteristics of a variety of solid-liquid mixtures, which can complete the process at full speed. The processes of feeding, centrifugal sedimentation, unloading and sludge, water discharge, etc. are mainly used for the separation and dehydration of solid-liquid mixtures, removing fine solids, and reducing the solid content in the solid-liquid mixture as much as possible, so that solids and liquids can be separated well. Layer, separation, to achieve the separation process of solid-liquid mixture deliquid. Wuchang decanter centrifuge has the characteristics of compact structure, stable operation, low noise, large processing capacity, low energy consumption, high degree of intelligent automation, low labor intensity, convenient operation and maintenance, and wide application range.

The design and manufacturing process of Wuchang Decanter Centrifuge conforms to "JB/T502-2004 Screw Discharge Settlement Centrifuge" and "JB8525-1997 Centrifuge Safety Requirements" and other standard specifications. The technical characteristics revolve around high speed, high separation factor, large aspect ratio, large cone angle, high wear resistance and other routes. The working speed of 250~550 series centrifuges is generally above 3200r/min, and the separation factor is above 2800. The working speed of 650~750 series tertiary stock centrifuge is generally above 2600r/min, and the separation factor is above 2000.



Product parameters

The Wuchang environmental protection intelligent decanter centrifuge is equipped with an intelligent control system, from start-pumping-work-flushing-stop, all of which realizes programmed automatic control operations, reducing human intervention during equipment operation and reducing operator knowledge Level requirements; professional intelligent control mode is equipped with electronic sensing devices such as speed, flow, vibration measurement, temperature measurement, alarm, gravity, etc., capable of predicting and solving equipment operation failures and adapting to multiple working conditions and adaptive materials The abilities have been well improved. The five-chang decanter centrifuge is mainly composed of cone rotating drum, direct rotating drum, screw pusher, differential, bearing seat at both ends, feeding system, slag discharge device, frame, collecting box shell, main and auxiliary motors, lubrication System, flushing device, intelligent electric control system and monitoring system, etc.

The decanter centrifuge produced by our company can clarify and dehydrate the suspension containing solid particles in the range of 0.001~3mm, the concentration range of 0.5~50%, and the solid-liquid density difference greater than 0.05g/cm3. Or classification, separation and other processing procedures. According to the material characteristics, it can be divided into WHLW two-phase decanter centrifuge and WHLWS three-phase decanter centrifuge. It is suitable for the separation of different materials under different complicated working conditions, and is widely used in industries such as pharmacy, food, chemical industry, environmental protection, construction, municipal administration, sewage treatment, sludge and so on.

working principle:

The suspension to be treated is distributed into the drum by the feed pump from the feed pipe, and the solid particles with larger specific gravity are accelerated to settle to the inner layer of the drum wall under the action of high-speed centrifugal force, and the settled solid phase is on the blades of the screw pusher. Under the push of, it is discharged from the sedimentation zone (cylindrical drum) through the drying zone (conical drum) to the solid phase outlet; the clarified liquid phase is discharged from the large end liquid phase overflow. So as to realize solid-liquid two-phase or solid-liquid-liquid three-phase separation.

Technical parameters of decanter centrifuge:

model

Rotating speed

Drum diameter mm

Aspect ratio

Separation factor

Differential speed rpm

Main motor power kW

Power of auxiliary motor kW

Processing capacity m3/h

Weight kg

Long size mm

WHLW250A


250

4.1

3519

1-50

7.5-11

3 ~5.5

1~6

1200

2650×750×1050

WHLW350B


350

4.1

3167

1-38

15-37

5.5-11

3~45

2500

3600×980×1300

WHLW450B


450

4.1

2608

1~34

30-55

11-22

5~60

3600

4400×1100×1400

WHLW550A


550

4.1

2460

1~30

45-75

18.5-45

10-80

5500

5100×1380×1580

WHLW650A


650

4

2296

1~28

75-110

37-55

20-100

8000

5100×1650×1580

WHLW750A


750

4

2135

1~55

110-160

55-90

30-120

13000

5600×2150×1650

Features:

1. Efficient work and convenient installation;

compared with traditional filter equipment (plate and frame filter press, belt filter, etc.), the decanter centrifuge has compact structure, continuous efficiency and small footprint (only three points for the filter) One or so or less), easy to operate and other advantages. , No need to be equipped with auxiliary compressor air source, high-pressure water, hydraulic system, working platform, etc. The material inlet and outlet manifold structure of the equipment is simpler and easier to disassemble. Moreover, the fully enclosed operation effectively prevents secondary media pollution such as running, emitting, dripping, and leaking, and the operating environment is more standardized.

2. Continuous operation is stable;

relative filtration equipment (plate and frame filter press, belt filter, etc.) uses filtration to remove solid particles, viscous solid particles and oily solid particles can easily cause clogging and clogging of the filter cloth. Corrosion causes the drop in liquid removal performance and the problem of high water content in the slag. The centrifuge relies on the specific gravity difference between the solid and liquid itself, and uses the centrifugal force generated by the high-speed rotation to quickly achieve delamination and separation of the solid and liquid, so that the production workshop assembly line can run continuously and stably, and it also reduces subsequent maintenance costs and operator’s Labor intensity.

3. Centrifuge life-wear-resisting technology of overcurrent parts;

The centrifuge's wear-resistant process protection plan is completely targeted. According to the characteristics of the material (PH value, corrosive substances, solid particle size and hardness, viscosity, mud-sand ratio, etc.), cemented carbide blocks can be selected Protection or alloy powder coating protection. The cemented carbide is protected by YG8 and various modified tungsten-cobalt alloys. The hardness of the alloy powder protective layer can reach HB62~78, which can fully meet the various fields of centrifuge applications.

4. Intelligent control system;

It is mainly equipped with electronic sensing devices such as speed, flow rate, vibration measurement, temperature measurement, alarm, gravity, etc., and has a complete machine monitoring and alarm system. Protect the centrifuge when overload, short circuit and phase loss occurs during the working process; monitor the operating parameters of the centrifuge such as rotation speed, bearing temperature, vibration, lubrication system, motor current, pushing torque, etc. in real time, and when the parameters are abnormal Start the alarm, and automatically enter the blockage removal program in case of overload and blockage, and automatically enter the shutdown program if the blockage removal program cannot be cleared to ensure the safety of personnel and equipment.

5. Multi-site electrical control system;

Both the main motor and the auxiliary motor are controlled by frequency converters to achieve stepless speed regulation. Generally, explosion-proof and non-explosion-proof electric control cabinets are used, supporting internationally renowned brands of frequency converters, PLC, HMI and other electrical components. According to users' less demand, our company can also provide frequency conversion control cabinets that meet domestic and foreign explosion-proof standards, such as China CNEX explosion-proof, EU ATEX explosion-proof, and international IECEX explosion-proof.

6. Unique structure, multiple materials are available;

The main and auxiliary motors have a variety of single-sided and double-sided structures, which are more reasonable. The parts in contact with the material of the decanter centrifuge are made of high-quality high-strength 316L stainless steel or 2205 duplex stainless steel, which has sufficient strength and superior corrosion resistance Ability, and have undergone multiple stress relief treatments. The drum body has a large aspect ratio, high speed, and a variety of drum cone angle structures are available.

Application areas:

◆Separation and dehydration of industrial and domestic sewage

◆Oil and natural gas drilling mud solids control separation

◆Separation and purification of drilling waste

◆Municipal sludge and various sludge separation and dewatering

◆Separation, purification and dehydration of coal tar
◆Clarification and purification of gypsum
◆Separation and dehydration of starch

◆Separation and dehydration of kaolin and graphite
◆ Separation and dehydration of dyes and pigments
◆ Separation and dehydration of ore slurry

◆Purification of fruit juice and dehydration of pulp fiber
◆Separation, purification and dehydration of animal and vegetable oils

◆Dehydration of soybean and wheat protein
◆ Dehydration of fish meal and fishmeal
◆ Dehydration of alcohol and vinasse

◆Starch washing and dehydration

Product classification

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