Equipment Description:
I. Working Principle
1. Filtration Stage
The dusty gas enters the ash hopper from the air inlet, and the large dust particles settle due to gravity;
The fine dust rises to the filter bag area with the air flow, and is retained on the outer surface of the filter bag. The purified gas passes through the filter bag and enters the clean air chamber for discharge.
2. Cleaning Stage
When the dust accumulation on the surface of the filter bag causes the pressure difference to be ≥1200Pa, the pulse valve opens, and the high-pressure air flow is sprayed into the filter bag through the spray pipe, causing the filter bag to expand and shake off the dust;
The cleaning cycle is adjustable (usually 2-5 minutes/time), the single spray time is ≤0.1 seconds, and the cleaning energy consumption is reduced by 30%-50%.
II. Key Parameters
| Parameters | Indicators |
| Processing air volume | 1000-300000m³/h (customizable) |
| Filtration air speed | 0.8-1.2m/min (normal temperature conditions) |
| Dust removal efficiency | ≥99.99% (emission concentration ≤50mg/m³) |
| Cleaning pressure | 0.5-0.7MPa (compressed air driven) |
| Applicable temperature | ≤280℃ (high temperature resistant filter bags can be extended to 300℃) |
3. Operation process
1. Preparation before starting the machine
Check whether the filter bag is installed firmly, without damage or looseness;
Confirm that the fan is lubricated normally and the direction is correct;
Test the pressure of the cleaning system and the action status of the pulse valve.
2. Operation monitoring
Observe the pressure difference in real time (normal range 800-1500Pa), and start cleaning when it exceeds the limit;
Monitor the dust concentration at the air outlet, and check the filter bag for damage or seal failure when abnormal.
3. Shutdown maintenance
After turning off the fan, continue cleaning 2-3 times to remove residual dust;
Clean the dust accumulation in the ash hopper, check the wear of the filter bag and record it.
4. Maintenance Points
Filter bag replacement: Replace every 2-3 years or when the pressure difference exceeds the standard continuously, to avoid hard objects scratching the elastic expansion ring of the bag mouth; Dust removal system maintenance: Regularly clean the blockage of the injection pipe and check the life of the pulse valve diaphragm (usually ≥1 million times); Ash hopper management: Install a vibrator or air cannon to prevent dust from caking, and lubricate the ash discharge valve once a week. Sixth, Applicable Scenarios
Industrial field: Cement plant raw material mill, metallurgical blast furnace, chemical reactor, power boiler flue gas treatment; Environmental protection standards: Meet the cleanliness requirements of ISO 14644-1, and adapt to ultra-low emission transformation projects. Bag dust collectors have become the core equipment for industrial dust control with their high dust removal efficiency and modular design, with the advantages of low energy consumption and long life.
Main structures and components:
1. Main frame
1. Box structure
The upper box (clean air chamber) is composed of a cover plate and an air outlet. It is equipped with a spray pipe, an air bag and a pulse valve. The sealing design (using sealing strips) ensures air tightness during negative pressure operation.
Includes an inspection door to facilitate maintenance of the spray system and filter bag components. In the core filter area of the middle box (filter bag chamber), the filter bags and bag cages are fixed by flower plates to separate the dust-containing area from the clean air area.
The flower plate holes are of uniform size to ensure that the filter bags are installed tightly without ash leakage.
The lower box (ash hopper) contains an air inlet, legs and ash discharge device to collect settled dust and discharge it through a screw ash conveyor, a star-shaped discharger, etc.
The internal guide plate optimizes the air flow distribution and reduces secondary dust.
2. Support structure
Pillar frame: carbon steel or steel structure, which supports the weight of the whole machine and transfers wind loads and seismic loads to the foundation. Platform escalator: convenient for equipment inspection and daily maintenance operations.
2. Filtration and cleaning system
1. Filter bag assembly
Filter bag: made of organic/inorganic fiber fabric, directly intercepts dust (filtration efficiency ≥99.99%), and has a temperature resistance of up to 280℃.
Bag cage (skeleton): made of carbon steel or stainless steel, with a smooth surface and no burrs, supporting the filter bag to prevent suction and deformation.
2. Cleaning device
Pulse injection systemAir bag: stores compressed air (0.5-0.7MPa) and provides a power source for cleaning.
Pulse valve and injection pipe: The electromagnetic pulse valve controls the airflow, and the injection pipe guides the high-pressure gas to instantly expand the filter bag and shake off the accumulated dust.
Venturi tube: optimizes the airflow direction and enhances the cleaning effect.
Control unit: PLC or pulse controller adjusts the injection cycle (2-5 minutes/time) and injection duration (≤0.1 seconds).
3. Auxiliary ash cleaning design
Offline valve: Cylinder driven, single bin isolation maintenance or ash cleaning to cut off airflow.
Bypass system: Switch the flue gas path under high temperature or abnormal working conditions to protect the filter bag.
3. Ash conveying and auxiliary system
1. Ash discharge device
Ash discharge valve: Manual plug valve or pneumatic device, regularly discharge the ash accumulated in the ash hopper.
Ash conveying machinery: Screw conveyor, scraper, etc., adapted to different dust characteristics and processing capacity.
2. Detection and protection device
Pressure difference monitoring: The total differential pressure gauge monitors the filter bag resistance in real time (normal 800-1500Pa), triggering ash cleaning or alarm.
Leak detection device: Detect the upper and lower pressure difference of the flower plate to locate the damaged filter bag.
Temperature sensor: Prevent the flue gas from overheating and damaging the filter bag.
3. Gas circuit and power system
Compressed air pipeline: including pressure reducing valve and filter triplex to ensure clean air source and stable pressure. Induced draft fan: provides negative pressure power to drive the flow of dust-laden gas.
4. Key component function comparison table
| Parts | Function | Associated structure |
| Flower board | Fix the filter bag assembly to separate the dusty/clean air areas | Middle box |
| Air cannon | Remove the dust accumulation in the ash hopper to ensure smooth ash discharge | Ash hopper |
| Sealing strips | Ensure the air tightness of the box to prevent air leakage | Upper box |
| Deflector | Optimize air flow distribution to improve pre-dust removal efficiency | Ash hopper |
Features:
1.High cost performance: Based on the customer's product positioning and development strategy, and with economic affordability as the foundation, we achieve the best cost performance.
2.The advanced and meticulous design concept of the equipment, along with the highly automated industrial equipment, showcases the image of a modern and advanced enterprise.
3. It has high adaptability, meeting the current production requirements and reserving room for development, taking into account the needs of increased production and improved quality in the future.
4.Quality compliance strictly adheres to the ISO900 quality management system, with every minute detail of the entire equipment installation being strictly controlled.
Product Tags:
|
|
Customizable Dust Filtration Accessories Meet Your Specific Filtration Requirements And Improve Efficiency Images
|
