Cartridge Dust Collector

Main Components

1. Cabinet: Thickened carbon steel spray-coated or stainless steel sealed box, negative pressure operation to prevent dust leakage;

2. Filter unit: Pleated cartridges (polyester, PTFE membrane, anti-static, high temperature resistant optional);

3. Pulse cleaning system: Air tank, pulse solenoid valve, blowpipe and venturi tube, 0.4–0.6MPa compressed air for back-blowing;

4. Air distribution baffle: Pre-separate coarse dust to reduce cartridge abrasion;

5. Ventilation system: Centrifugal fan with silencer for stable low-noise negative pressure;

6. Hopper & ash discharge device: 60° cone hopper, matched with drawer, star unloader, counterweight flap valve;

7. PLC control system: Dual automatic cleaning modes (differential pressure / timing), alarm for over-temperature, high resistance and high material level;

8. Optional accessories: Spark arrester, explosion venting device, activated carbon adsorption box, moving casters.

Working Principle

1. Pre-separation: Dust-laden air enters the cabinet, coarse dust falls into hopper by gravity after hitting the baffle; fine dust flows up to filter area.

2. Filtration: Dust is intercepted on the outer surface of pleated cartridges; clean air penetrates cartridge inner cavity and discharges through fan. Folded design greatly expands filter area and reduces system resistance.

3. Pulse cleaning: When differential pressure rises to set value, pulse valves release high-pressure reverse air instantly to shake off dust cake into hopper; online/offline cleaning available to avoid secondary dust.

4. Ash discharge: Dust in hopper is discharged regularly via airtight unloader for continuous purification.

Advantages

1. Ultra-high filtration efficiency: PTFE membrane cartridge captures submicron dust, meets ultra-low emission standard;

2. Space-saving: 40% smaller volume than bag dust collector under same air volume, filter area 3–5 times larger than filter bags;

3. Low energy consumption: Low pulse air pressure and less air consumption, stable operation resistance;

4. Easy maintenance: Top-mounted cartridges pulled out from top, side-mounted cartridges plug-and-play from front, single-person quick replacement;

5. Wide adaptability: Custom cartridges for dry dust, oily welding fume, high temperature and flammable explosive powder;

6. Automatic operation: Differential pressure linkage auto cleaning, multi safety alarms for unattended running;

7. Zero dust leakage: Whole machine negative pressure sealed design, no dust overflow in workshop.

Application

Common Faults & Solutions

1. High differential pressure & insufficient air flow

   Causes: Blocked cartridges, faulty pulse cleaning, oil/water mixed compressed air, dew condensation from high humidity.

   Solutions: Replace blocked cartridges; repair pulse valves and pipelines; install air dryer; add cabinet heat tracing.
2. Dust emission at air outlet

   Causes: Perforated cartridges, aging sealing rings, air leakage of tube sheet, improper cartridge installation.

   Solutions: Replace broken cartridges; renew sealing rings; weld tube sheet gaps; fix cartridges tightly.
3. Pulse valve no blowing

   Causes: Burnt solenoid coil, broken circuit, insufficient air tank pressure, frozen air pipeline, faulty differential pressure transmitter.

   Solutions: Replace pulse valves and repair wiring; boost air pressure; install air drying equipment; calibrate differential pressure sensor.
4. Short service life of cartridges

   Causes: Spark burning without spark arrester, direct air flow impact, sharp hard particles, mismatched cartridge material for high temp/corrosion.

   Solutions: Install spark trap; add flow guide plate; select high temperature / anti-corrosion cartridges.
5. Dust bridging & blockage in hopper

   Causes: Damp caking dust, insufficient hopper angle, broken unloader, sticky powder.

   Solutions: Install hopper vibrator; use standard 60° hopper; repair ash discharge device; spray powder to reduce dust viscosity.
6. Dust leakage from cabinet

   Causes: Aging sealing gaskets on access doors/flanges, cracked welding seams, positive pressure operation.

   Solutions: Replace gaskets, weld cabinet cracks; adjust fan to keep negative pressure inside machine.