Coal Screw Conveyor

Introduction of Coal Screw Conveyor

Coal Screw Conveyor is mainly used in the pulverizing system of coal-fired power plant boilers. According to the conveying process requirements of Coal Screw Conveyor, it can be transported by a single unit, or multiple units can be combined with other transport configurations to form a horizontal or inclined conveying system. Coal Screw Conveyor can Utilization within the ambient temperature range of -20°C to +40°C, the temperature of the conveyed material is below 50°C.

The particle size of coal powder is 200 mesh, which is fine powder and has certain fluidity. It is required that the seal of Coal Screw Conveyor should be relatively tight, so as to avoid the influence of material leakage on normal conveying work.

Videos of Coal Screw Conveyor

Conveying coal

Conveying pulverized coal

Application of Coal Screw Conveyor

Coal Screw Conveyor can be used for bulk material transportation in coal chemical industry, metallurgy, paper making and construction industry, such as: cement, sludge, coal powder, carbon black, coal slime, slag and other materials.

Features of Coal Screw Conveyor

1. The conveying length of a single machine is up to 60 meters, and it can be used in combination with other equipment to achieve longer distance conveying.

2. It can be arranged horizontally or inclined according to the technical requirements of the site.

3. Good sealing performance, which can reduce leakage caused by poor sealing during pulverized coal transportation.

4. There is a cleaning device at the discharge end, and the position of the inlet and outlet is flexible;

Working Principle of Coal Screw Conveyor

When the Coal Screw Conveyor is started, the Coal feed inlet enters the conveying pipe, driven by the motor, the screw shaft starts to rotate to exert a thrust on the Coal, and under the joint action of the Coal's own gravity and this thrust, the Coal moves forward And discharged through the discharge port to the next process.

Technical parameters of Coal Screw Conveyor

LS type	100	160	200	250	315	400	500	630	800	1000	1250
GX type			200	250	300	400	500
Spiral diameter (mm)	100	160	200	250	315	400	500	630	800	1000	1250
Pitch (mm)	100	160	200	250	315	355	400	450	500	560	630
Speed (r/min)	140	120	90	90	75	75	60	60	45	35	30
Delivery capacity QΦ=0.33 (m³/h)	2.2	7.6	11	22	36.4	66.1	93.1	160	223	304	458
功率Pd 1=10m（KW）	1.1	1.5	2.2	2.4	3.2	5.1	4.1	8.6	12	16	24.4
Power Pd 1=30m (KW)	1.6	2.8	3.2	5.3	8.4	11	15.3	25.9	36	48	73.3
Speed (r/min)	120	90	75	75	60	60	45	45	35	30	20
Delivery capacity QΦ=0.33 (m³/h)	1.9	5.7	18	18	29.1	52.9	69.8	125	174	261	305
Power Pd 1=10m (KW)	1.0	1.3	2.1	2.1	2.9	4.1	4.7	6.8	9.4	14.1	16.5
Power Pd 1=30m (KW)	1.5	2.3	4.5	4.5	7	8.9	11.6	20.4	28.3	42.2	49.5
Speed (r/min)	90	75	60	60	45	45	35	35	30	20	16
Delivery capacity QΦ=0.33 (m³/h)	1.4	4.8	15	15	21.8	39.6	54.3	97	149	174	244
Power Pd 1=10m (KW)	0.9	1.2	1.9	1.9	2.5	3.4	4.3	5.4	8.1	9.5	13.3
Power Pd 1=30m (KW)	1.2	2.2	3.8	3.8	5.4	6.8	9.2	16	24.4	28.6	39.9
Speed (r/min)	75	60	45	45	35	35	30	30	20	16	13
Delivery capacity QΦ=0.33 (m³/h)	1.2	3.8	11	11	17	31.7	46.5	73.0	99.3	139	199
Power Pd 1=10m (KW)	0.75	1.1	1.6	1.6	2.1	3.1	3.7	4.6	5.7	7.7	11
Power Pd 1=30m (KW)	1.1	1.8	3.4	3.4	4.4	5.6	8	14	16.7	23.2	33

Structure of Coal Screw Conveyor  

Coal Screw Conveyor is composed of driving device, intermediate bearing, screw shaft, screw machine body, screw blade, head section, middle section, tail section, feeding and discharging device and other components.