Structural Composition

Cylinder: Carbon steel / stainless steel (304/316L), vertical or horizontal type.

Filter screen: Wedge wire screen / woven mesh / perforated plate, filtration range 20–4000μm, corrosion-resistant and high mechanical strength.

Cleaning mechanism: Stainless steel brush for brush-type models, driven by geared motor (0.37–2.2kW).

Blowdown system: Electric blowdown valve (DC24V/AC220V), blowdown duration adjustable from 30 to 180 seconds.

Control system: PLC / microcomputer controller, equipped with differential pressure switch (0–1.0MPa), timer, overload protection, manual/automatic mode switchover.

Working Principle

Filtration process:Water flows in through the inlet and filters outward from the inner side of the screen. Contaminants are trapped on the inner wall of the filter screen, and clean water flows out via the outlet.

Cleaning trigger condition:When the differential pressure between inlet and outlet reaches ≥0.3–0.5MPa (adjustable), or the preset timing cycle expires (adjustable 1–24 hours), the controller activates the cleaning program.

Cleaning & blowdown process:The motor drives the brush to rotate and scrape off contaminants attached to the screen. Meanwhile, the blowdown valve opens to discharge waste together with water. The system maintains continuous flow during cleaning, and the blowdown water consumption is ≤1% of total flow rate.

Reset state:Once the cleaning cycle ends or the differential pressure returns to normal, the motor stops and the blowdown valve closes, and the equipment resumes normal filtration mode.

Executive Standards

Design & Manufacturing Standards: HG/T 21637-1991, SH/T 3411

Flange Standards: GB, HG, ANSI, DIN, GOST

Electrical Control Standards: GB/T 14048.1, GB 50054

Core Features

Fully automatic operation: Dual control modes of differential pressure & timing; no manual operation, no disassembly, zero flow interruption during cleaning.

High efficiency & low consumption: Short cleaning cycle (≈60 seconds), low wastewater consumption, low initial pressure drop (≤0.02MPa).

High precision & large throughput: Filtration accuracy 20–4000μm, single unit flow rate 20–5000m³/h, capacity expandable by parallel installation.

Safe & reliable: Equipped with motor overload protection and anti-clogging screen design, suitable for 24-hour continuous operation.

Parameters

Item	Parameter Range	Remarks
Model	ESGF Series	Vertical / Horizontal, Brush Type / Suction Type
Nominal Diameter	DN50–DN800 (Common size: DN80–DN300)	Flange connection conforming to HG/T20592, ASME B16.5
Treatment Flow Rate	20–5000 m³/h (per unit)	Max. 8000 m³/h via parallel installation
Working Pressure	0.1–1.6 MPa (standard); High pressure version up to 2.5–4.0 MPa	Pressure class: PN6/10/16/25
Filtration Accuracy	20–4000 μm	Wedge wire screen: 50–2000μm; Woven mesh: 10–3000μm
Operating Temperature	0–65℃ (standard); High-temperature type ≤150℃	Carbon steel: ≤380℃; Stainless steel: ≤480℃
Control Mode	Differential pressure (0.3–0.5MPa), Timing (1–24h), Manual	PLC / Microcomputer control, with LED display & fault alarm
Cleaning Duration	30–180 seconds (adjustable)	Standard preset: 60 seconds
Blowdown Water Consumption	≤1% of total flow rate	Continuous flow maintained during cleaning
Motor Power	0.37–2.2 kW	380V/50Hz, IP54 protection, overload protection equipped
Materials	Housing: Carbon steel (Q235) / 304 / 316L; Filter screen: 304 / 316L; Brush: 304 stainless steel with PTFE coating	Duplex steel / titanium alloy available for customization
The above parameters are for reference only. Please contact us for detailed information.

Product Certifications