LFZ-600-300 Automatic Brush Self Cleaning Filter 550 Cubic Meter Per Hour DN300 For Cooling Tower Circulating Water

Product Overview

Water Filter Element line pairs consumable cartridges with complete pre-treatment equipment, and the LFZ-600-300 automatic brush self-cleaning filter is the large-flow brush unit under Water Filter Element. Working pressure 0.2-2.5 MPa, operating temperature ≤80 ℃, 380V 50Hz, backwash water consumption ≤2%, filtration precision 50-5000 μm, brush-type cleaning with 60s or adjustable cycle, manual or automatic control. LFZ-600-300: DN300, tank φ600×1750, 1.0 MPa, 0.75 kW, flow 550 m³/h, screen ≥300 μm.

Basic Technical Parameters

Model	LFZ-600-300
Inlet / outlet	DN300
Casing size	φ600 × 1750 mm
Pressure	1.0 MPa
Motor power	0.75 kW
Flow rate	550 m³/h
Screen precision	≥300 μm
Screen material	304 / 316L / 2205 stainless steel
Cleaning method	Brush type, 60 s or adjustable
Control mode	Manual / automatic (time or differential pressure)

Cooling Tower Circulating Water Scenario

Open cooling towers collect wind-blown dust, algae and scale particles that block heat-exchanger nozzles over a season. The automatic brush filter sits on the circulating return line: water passes the stainless screen, a motor-driven brush scrapes captured debris during a 60-second cycle, and drain water purges to waste without stopping the fan. LFZ-600-300 at DN300 and 550 m³/h matches a mid-size tower loop; larger plants step up to LFZ-700-350 (700 m³/h) or LFZ-800-400 (1000 m³/h). Downstream fine protection pairs the unit with a High Flow Filter Cartridge when process water demands lower turbidity.

Product Advantages

Brush cleaning removes cake without cartridge replacement, so consumable cost drops to near zero for coarse dust. Backwash consumption stays ≤2% of flow, and the 60 s adjustable cycle plus differential-pressure trigger avoids wasted water. Screen materials 304, 316L or 2205 match normal, corrosive and seawater-influenced loops, and the tank can be Q235B, 304, 316L or rubber-lined carbon steel. Automatic control runs unattended, protecting heat-exchanger nozzle lifetime.

Manufacturer And Factory Strength

Our workshop assembles and pressure-tests each LFZ unit before dispatch, with brush, screen and valve spares supplied separately for long-term maintenance. Series flow covers LFZ-600-300, LFZ-700-350 and LFZ-800-400 for tower-to-pipeline scales. Custom screen mesh and tank material are quoted against water quality; for sizing support, contact our engineering team. The oil-side automatic filtration counterpart is referenced at Industrial Oil Purification Equipment.

FAQ

Q1: Does brush cleaning need the loop to shut down?
A1: No. The cleaning cycle runs online; only a short drain purge occurs, fan and pumps keep running.

Q2: What screen precision suits cooling tower dust?
A1: ≥300 μm is typical for wind-blown dust and algae; choose finer mesh for process-sensitive heat exchangers.

Q3: Can it handle seawater-influenced cooling water?
A1: Select 316L or 2205 screen and rubber-lined or stainless tank; standard carbon steel is not for continuous chloride duty.

Q4: How is the cleaning cycle triggered?
A1: By fixed timer or inlet-outlet differential pressure, selected in the automatic controller; manual mode is available for maintenance.

Q5: What spare parts are stocked?
A1: Brush assembly, screen cylinder, solenoid valve and controller module are supplied as separate spares for site maintenance.

Reference: GB/T industrial automatic self-cleaning water filter specification