LCMD Type Series Offline Long Bag Pulse Dust Collector
Technical Parameters
Offline LCMD Type Low Pressure Pulse Bag Filter in Detail:
1. Overview of the
The LCMD type offline low pressure pulse bag filter is designed and manufactured using advanced foreign technology. It operates under negative pressure and is a large-scale, long-bag, low-pressure pulse dust collector. This system combines the advantages of high-voltage pulse bags, low-pressure pipes, and impinging pulse mechanisms. Its compact structure ensures efficient dust removal with double filtration principles, stable operation, and a long service life for the filter bags. It is widely recognized as one of the best dust collection systems in industries such as metallurgy, power generation, and construction materials.
2. Main Structure and Working Principle
2.1 Main Structure
The LCMD type chamber stop duct injection low-pressure pulse bag filter consists of several key components: the bag room (cabinet), ash hopper, clean gas chamber, filter bags and frames, pulse injection system, bellows for air intake and exhaust, air valves, discharge valve, support structure, and foundation.
2.2 Box
The offline low-pressure pulse bag filter uses a modular design with plate assembly, reducing on-site installation workload and ensuring equipment quality. A sectional block device is installed at the bottom of the inlet, allowing coarse particles to fall directly into the ash hopper. The airflow then passes through the filter bags, where fine particles are captured. This design improves airflow distribution and protects the filter bags from direct abrasion, extending their lifespan.
2.3 Ash Hopper
The ash hopper is constructed from 4mm thick steel plates welded together, reinforced with angle steel for strength. The bottom features a large aperture grid for easy inspection and cleaning. Workers can access the filter bags directly from above, dropping dust onto the grid before removing it through the hopper door. This design reduces labor intensity and enables clean operations, making it popular among maintenance teams.
2.4 Filter Bags
Given that flue gases may contain SO2 and moisture, which can form corrosive acids, the filter bags are made of high-temperature FMS needled felt with excellent acid and alkali resistance. Key specifications include:
Weight: 500 g/m²
Thickness: 1.9 mm
Porosity: 10 m³/m²/min
Tensile Strength: Radial > 600 N / 5x20 cm; Zonal > 1000 N / 5x20 cm
Continuous Use Temperature: 190°C°C
Short-Term Use Temperature: 220°C°C
Acid and Alkali Resistance: Excellent
The elastic ring at the top of the filter bag is designed to fit securely into the flower plate hole, ensuring a tight seal and easy installation and maintenance. Cross-flow channels between the bags help distribute the gas evenly, balancing the load and extending the service life of the filter bags.
2.5 Filter Bag Frame
The frame of the filter bag is made using cold-drawn steel spot welding and resistance welding, resulting in a smooth surface free of weld slag or burrs. Afterward, it undergoes galvanization to enhance durability.
2.6 Clean Gas Chamber
Each bag room is connected to a clean gas tank, which contains multiple spray nozzles. The spray pipe is fixed to the wall board with a quick-loading connection, and the terminal clamp is attached to the bracket. This structural design allows for easier installation and adjustment of the jet pipe, ensuring precise injection into each filter bag for optimal cleaning performance.
2.7 Manhole Door and Inspection Door
The manhole door on the top and the inspection door of the ash hopper use a quick-opening structure, eliminating the need for tools during maintenance. These doors open and close rapidly and feature a CAM-type mechanism that allows for manual tightening and secure closure. This design makes maintenance more convenient and efficient.
2.8 Electromagnetic Pulse Valve
Our company produces electromagnetic pulse valves with performance and lifespan reaching international standards. Key technical parameters include:
Diaphragm Service Life: > 1 million cycles
Environmental Humidity Adaptability: -35 to 90%
Blowing Air Pressure: 0.2–0.6 MPa
Injection Time: 0.2 seconds
Injection Volume: 500 liters or higher
Power Supply: DC24V, 20W
3. Working Principle
Dust-laden gas enters the filter via the bellows and is directed into the bottom of the enclosure. It first encounters a cutting device, allowing coarse particles to settle directly into the ash hopper. The remaining fine dust flows into the filter bag chamber, where it is trapped by the filter bags under the action of negative pressure. Clean gas exits through the clean gas chamber and is discharged via the air valve into the exhaust manifold, eventually being released into the atmosphere through the chimney. As dust accumulates on the filter bags, the system triggers a cleaning cycle, using compressed air to inflate the bags and dislodge the dust, which falls into the hopper. This process continues sequentially across all chambers.
4. Technical Features
4.1 Excellent dust cleaning performance with high dust removal efficiency, reaching over 99.9%. The outlet emissions remain below 100 mg/Nm³.
4.2 Reasonable layout of filter bags with balanced airflow distribution, leading to longer filter bag life, typically lasting 1–2 years.
4.3 A sectional block device is installed at the bottom of the box body, intercepting coarse dust particles directly into the hopper and improving airflow distribution while protecting the filter bags from direct erosion.
4.4 The filter bag structure is designed for ease of maintenance and health safety.
5. Electrical Control and Automation Instruments
5.1 Control System
5.1.1 Precipitator Dust Control
The bag filter offers three modes of dust control: timing, differential pressure, and mixed mode. These can be selected via a switch located on the control panel. In timing mode, when the set time is reached, the system initiates a cleaning cycle. In differential pressure mode, cleaning is triggered based on the pressure difference across the filter. Mixed mode prioritizes timing but also considers pressure differences.
5.1.2 Dust Discharge and Ash Conveying Control
The dust collector includes two ash hoppers and supports a manual ash discharge system with a star-shaped valve outside.
5.1.3 Tossing Valve Control
To prevent accidents and ensure uninterrupted production, automatic opening and closing of the butterfly valves are implemented, with interlocks between the valves and pipelines.
Question
Q1: Are you a manufacturer?
A: Yes, we are a manufacturer and were successfully listed in 2016. Our factory is located in Xinxiang City, Henan Province, China. Welcome to visit us!
Q2: How is the quality of the filters?
A: "Quality is our culture!" All of our replacement elements are manufactured in China under the most rigorous quality standards. Additionally, all of our filter elements meet seven ISO standards, and we fully guarantee the quality of all our products.
Q3: How do you ensure after-sales service?
A: Before shipment, all our products are inspected one by one. If any issues arise due to product defects, we will replace them with new ones.
Q4: Do you accept OEM?
A: Yes, we can manufacture according to your specific requirements.
Q5: Can you design filters according to working conditions?
A: Yes. We have a professional R&D department that can design custom filters tailored to your needs.
fishing accessories,Strong fishing wire rope,fishing gear
Taizhou City Yuansheng Stainless Steel Products Co., Ltd. , https://www.ss-wirerope.com