The stable operation, dust removal efficiency, and service life of industrial dust collectors rely entirely on the coordinated cooperation of the entire set of components. Different types of bag filters, filter cartridges, electrostatic precipitators, and wet dust collectors are all equipped with exclusive core accessories and vulnerable parts. This article summarizes the classification, functions, and adaptation conditions of the complete set of components for mainstream dust removal equipment, providing objective and professional reference for foreign trade procurement, equipment maintenance, accessory replacement, and equipment overhaul.

1、 Core accessories of bag filter

Bag filter is the most widely used dust removal equipment in industry, with a mature accessory system mainly divided into four categories: filtration core, dust cleaning system, structural sealing, and electrical control accessories.

1. Filter core accessories

Dust filter bag: The core filtering element of the equipment, made of materials such as polyester, fiberglass, PTFE, PPS, etc., can adapt to different dust conditions such as room temperature, high temperature, corrosion resistance, and wear resistance. It intercepts particulate matter in the flue gas through fiber pores, directly determining the dust removal efficiency of the equipment.

Bag cage (dust removal skeleton): a supporting component used in conjunction with filter bags, divided into circular, elliptical, star shaped and other structures. The surface is galvanized, sprayed, and treated with silicon to prevent the collapse and deformation of the filter bag, ensure stable ventilation of the filter bag, and extend the service life of the filter bag.

2. Pulse cleaning system accessories

Pulse solenoid valve: a key pneumatic component of the dust cleaning system, which removes the accumulated dust on the surface of the filter bag by instantly blowing high-pressure airflow. It is divided into two types: right angle and submerged, and is suitable for different wind pressures and blowing requirements.

Pulse controller: an automated control core that can autonomously adjust the spray interval, spray duration, and cycle period to achieve fully automatic dust cleaning without manual intervention, suitable for industrial continuous production scenarios.

Spray tube and air bag: The air bag is used to store compressed air, and the spray tube is responsible for evenly conveying the airflow, ensuring uniform cleaning of the single chamber filter bag and avoiding local dust accumulation and blockage.

3. Sealing and Ash Unloading Accessories

Dust removal bag sealing ring: installed at the mouth of the filter bag, it plays a sealing and isolation role, preventing short circuit and air leakage of dusty airflow, and avoiding the direct discharge of unfiltered dust that may exceed the standard.

Unloading device: including star shaped unloader, flap valve, and screw conveyor, mainly used for quantitative and sealed unloading of accumulated ash in the ash hopper, to prevent negative pressure air leakage and secondary dust flying.

2、 Special accessories for filter cartridge dust collector

Filter cartridge dust collectors are commonly used for small and fine dust control in workshops, with a compact structure, simplified accessories, and high modularity.

Dust removal filter cartridge: The core filtering component is made of pleated paper, polyester, and laminated materials, with a large filtering area and easy installation. It has excellent filtering effect on fine dust and dry dust, and is the main vulnerable part.

Filter cartridge protective net and sealing strip: Protect the filter cartridge from damage caused by airflow impact, while ensuring the sealing of the equipment box to prevent air leakage and dust accumulation.

Small pulse valve and high-pressure air pump: equipped with a small dust cleaning system, it automatically cleans the surface dust of the filter cartridge to maintain the continuous and stable filtering performance of the equipment.

3、 Core components of electrostatic precipitator

The electrostatic precipitator is suitable for high air volume, high temperature, and ultra-low emission conditions, and its accessories mainly include electric field dust removal, high-voltage power supply, and ash cleaning structure.

1. Core components of electric field

Dust collection plate: The main body for dust adsorption and collection is made of cold-rolled steel plate or stainless steel material, with a flat structure and strong conductivity. It is the core component for forming an electric field and capturing dust.

Corona electrode wire: including barbed wire, fishbone wire, and spiral wire, responsible for releasing high-voltage corona, making dust charged, and adapting to different dust specific resistance working conditions.

2. Power supply and dust cleaning accessories

High voltage rectifier transformer: provides stable high-voltage direct current power for the electric field, divided into power frequency and high-frequency pulse models, directly affecting the charging efficiency and dust removal effect.

Vibration device: including cathode vibration and anode vibration systems, which use mechanical vibration to shake the accumulated dust on the electrode plate and electrode line to the ash hopper, completing the dust cleaning operation.

Insulated sleeves and insulators: They achieve insulation isolation between high-voltage systems and equipment casings, ensuring the safe operation of equipment, and are key safety components of electrostatic precipitators.

4、 Universal dust removal auxiliary accessories (universal for all models)

This type of accessory is compatible with all dust removal equipment and is the basic accessory for stable operation and maintenance of the equipment. It is also a common replacement category in foreign trade.

1. Differential pressure sensor: monitors the pressure difference inside and outside the equipment, provides real-time feedback on the clogging status of the filter material, and provides data basis for adjusting the cleaning cycle.

2. Level gauge: Monitor the height of ash accumulation in the ash hopper to prevent ash overflow and equipment blockage.

3. Cylinder and solenoid valve: Control the opening and closing of the air door and lift valve to achieve offline dust cleaning in separate chambers.

4. Dust removal fan and soft connection: providing negative pressure suction, the soft connection plays a role in shock absorption, sealing, and noise reduction.

5. Insulation layer and maintenance door: prevent low-temperature condensation and paste bags, while facilitating daily maintenance of equipment.

5、 Key points for procurement and operation of dust removal accessories

1. Priority for working condition adaptation: For high temperature, corrosion, humidity, and explosion-proof working conditions, corresponding material accessories must be matched to avoid rapid wear and tear of accessories and equipment failure.

2. Regular replacement of vulnerable parts: Filter bags, filter cartridges, solenoid valves, and sealing rings are high-frequency vulnerable parts, and regular replacement can ensure long-term standard operation of the equipment.

3. Parameter consistency: Foreign trade replacement parts need to match the original equipment size, voltage resistance, temperature resistance, and electrical parameters to avoid adverse compatibility affecting the overall performance of the machine.