Mechanical Bar Screen for Wastewater Pretreatment (HLCF Series)

Short Description:

The HLCF Mechanical Bar Screen is a fully automatic, self-cleaning solid-liquid separation device used for wastewater pretreatment. It features a chain of specially shaped rake teeth mounted on a rotating axis. Installed in the water inlet channel, the rake chain moves uniformly, lifting solid waste out of the water while allowing fluid to pass through the gaps. As the chain reaches the upper turning point, most debris falls off under gravity and guiding rails, while any remaining solids are cleaned off by a reverse-rotating brush. The entire operation runs continuously and automatically, ensuring efficient removal of solids from wastewater streams.

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Product Features

1. High-Performance Drive: Equipped with a cycloidal or helical gear reducer for smooth operation, low noise, large load capacity, and high transmission efficiency.
2. Compact & Modular Design: Easy to install and relocate; self-cleaning during operation and low maintenance requirements.
3. Flexible Control Options: Can be operated locally or remotely, depending on project needs.
4. Built-In Protection: Integrated overload protection automatically stops the machine in case of malfunction, protecting internal components.
5. Scalable Design: For widths exceeding 1500 mm, parallel units are installed to ensure structural integrity and screening efficiency.

Typical Applications

This automatic mechanical screen is widely used in municipal and industrial wastewater treatment systems for continuous debris removal. It is ideal for:

✅Municipal sewage treatment plants
✅Residential sewage pretreatment
✅Pumping stations and waterworks
✅Power plant intake screening
✅Textile, printing & dyeing industries
✅Food & beverage processing
✅Aquaculture and fisheries
✅Paper mills and wineries
✅Slaughterhouses and tanneries

This unit plays a vital role in protecting downstream equipment, reducing maintenance costs, and improving overall system performance.

Beverage processing

Dairy industry

Meat Processing

Mining industry

Municipal Wasterwater

Paint factory

Paper Mill

Petrochemicals

Printing and Dyeing

Sewage Treatment

Technical Parameters

Model /Parameter

HLCF-500

HLCF-600

HLCF-700

HLCF-800

HLCF-900

HLCF-1000

HLCF-1100

HLCF-1200

HLCF-1300

HLCF-1400

HLCF-1500

Device Width B(mm)

500

600

700

800

900

1000

1100

1200

1300

1400

1500

Channel Width B1(mm)

B+100

Effective Grille Spacing B2(mm)

B-157

Anchor Bolts Spacing B3(mm)

B+200

Total Width B4(mm)

B+350

Teeth Spacing b(mm)

t=100

1≤b≤10

t=150

10<b≤50

Installing Angle α(°)

60-85

Channel Depth H(mm)

800-12000

Height Between Discharge Port and Platform H1(mm)

600-1200

Total Height H2(mm)

H+H1+1500

Back Rack Height H3(mm)

t=100

≈1000

t=150

≈1100

Screen Speed v(m/min)

≈2.1

Motor Power N(kw)

0.55-1.1

0.75-1.5

1.1-2.2

1.5-3.0

Head Loss(mm)

≤20(no jam)

Civil Load

P1(KN)

P2(KN)

△P(KN)

1.5

Note：Pis calculated by H=5.0m,for every 1m H increased,then P total=P1(P2)+△P
t:rake tooth pitch coarse:t=150mm
fine:t=100mm

Model /Parameter			HLCF-500	HLCF-600	HLCF-700	HLCF-800	HLCF-900	HLCF-1000	HLCF-1100	HLCF-1200	HLCF-1300	HLCF-1400	HLCF-1500
Flow Depth H3(m）			1.0
Flow Velocity V³(m/s)			0.8
Grid Spacing b(mm)	1	Flow Rate Q(m³/s)	0.03	0.04	0.05	0.06	0.07	0.08	0.08	0.09	0.10	0.11	0.12
	3		0.07	0.09	0.10	0.12	0.14	0.16	0.18	0.20	0.22	0.24	0.26
	5		0.09	0.11	0.14	0.16	0.18	0.21	0.23	0.26	0.28	0.31	0.33
	10		0.11	0.14	0.17	0.21	0.24	0.27	0.30	0.33	0.37	0.40	0.43
	15		0.13	0.16	0.20	0.24	0.27	0.31	0.34	0.38	0.42	0.45	0.49
	20		0.14	0.17	0.21	0.25	0.29	0.33	0.37	0.41	0.45	0.49	0.53
	25		0.14	0.18	0.22	0.27	0.31	0.35	0.39	0.43	0.47	0.51	0.55
	30		0.15	0.19	0.23	0.27	0.32	0.36	0.40	0.45	0.49	0.53	0.57
	40		0.15	0.20	0.24	0.29	0.33	0.38	0.42	0.46	0.51	0.55	0.60
	50		0.16	0.2	0.25	0.29	0.34	0.39	0.43	0.48	0.52	0.57	0.61