Matching requirements for specialized dust removal skeleton of bag filter
Mar 26,2026
The dust removal skeleton is the core component of the bag filter, mainly used to support the filter bag, prevent the filter bag from being sucked down by negative pressure, and ensure smooth airflow. The mismatch between the skeleton, filter bag, dust collector body, and working environment can easily cause damage to the filter bag, decrease in dust removal efficiency, and increase in equipment failure rate. To ensure the stable operation of the dust removal system and extend the service life of the filter bag and the entire machine, the following matching requirements must be strictly followed.
1、 Accurate matching of size specifications
Size adaptation is a basic requirement, and excessive errors can directly damage the filter bag and affect equipment operation. The outer diameter of the skeleton should be slightly smaller than the inner diameter of the filter bag, and a reasonable gap should be kept. A gap that is too small can cause installation difficulties and scratch the filter bag, while a gap that is too large can cause excessive shaking of the filter bag, exacerbating friction and damage. Generally, the gap should be controlled at 5-10mm.
The length of the skeleton should perfectly match the height of the filter bag and dust collector flower board. If the length is too long, it will press against the flower board, causing wrinkles and dust accumulation in the filter bag; The length is too short, causing the filter bag to be suspended and subjected to force, making it highly susceptible to tearing during dust cleaning. The verticality of the skeleton meets the standard, avoiding bending and deformation, and preventing one-sided wear of the filter bag. In addition, the diameter of the skeleton and cage should also match the model of the filter bag, achieving one-to-one correspondence and avoiding mixing.
2、 Matching material with working environment
The skeleton material must be suitable for the on-site temperature, humidity, and dust corrosiveness to prevent rusting, deformation, corrosion damage, and indirectly protect the filter bag. Under normal temperature and non corrosive working conditions, ordinary carbon steel material is selected, combined with basic anti-corrosion treatment, which provides higher cost-effectiveness.
Under high temperature conditions, strict selection of high-temperature resistant carbon steel and stainless steel materials is required to prevent the skeleton from softening and deforming at high temperatures, and to prevent loss of support. For working conditions with high humidity and acid alkali corrosion, 304 or 316 stainless steel, or anti-corrosion skeletons treated with organic silicon spraying, galvanizing, or spray coating, must be used to prevent surface corrosion, roughness, and scratching of filter bags.
3、 Structural design and operation mode matching
The skeleton structure should conform to the operation mode of the dust collector, especially the cleaning mode, to ensure uniform force and smooth cleaning. The conventional pulse type bag filter uses an integrated skeleton with multiple vertical bars and uniform distribution, which provides sufficient support and is not easily deformed. The number of vertical bars is moderate, but there is insufficient support and the filter bag is prone to collapse due to suction; Too much will occupy the filtering space, affecting breathability and dust removal efficiency.
The spacing between horizontal bars should be reasonable and not too dense to ensure smooth dust shedding and reduce the risk of bag sticking. The segmented skeleton is only suitable for use in long bags, and the interface must be polished smooth, tightly connected, and free of burrs and gaps. Smooth protective mouth is installed on the top of the skeleton, and the bottom is sealed to prevent cutting the upper and bottom of the filter bag and improve its durability.
4、 Matching surface technology with dust characteristics
The surface treatment process of the skeleton directly affects the wear speed of the filter bag, and must be smooth and flawless, eliminating welding scars, burrs, and protrusions. All welding points should be polished flat, without virtual welding or missing welding, to avoid sharp cuts on the filter bag.
Ordinary dry dust, using galvanizing or spray coating technology, with a smooth surface and reduced friction; Corrosive dust, sprayed with organic silicon or stainless steel material, corrosion-resistant and durable, long-term use will not rust or become rough. The surface coating has strong adhesion and is not easy to peel off, preventing the coating from peeling off and contaminating the filter bag, resulting in filter bag blockage.
5、 Installation adaptation and universality requirements
The skeleton should be adapted to the size of the flower plate hole of the dust collector, and after installation, it should be stable and not shake or slide down, avoiding displacement and friction of the filter bag during operation. Within the same dust collector, all skeleton specifications are unified to ensure uniform force distribution on the filter bag and stable airflow. Before installation, check the skeleton for deformation, damage, and rust. Unqualified products are strictly prohibited from being installed on the machine. At the same time, the weight of the skeleton is moderate, making it easy to disassemble and operate, reducing damage caused by collisions during installation.
The matching core of the dust removal skeleton is to fit the parameters of the filter bag, the structure of the dust collector, and the on-site working conditions. To achieve precise size, material compatibility, reasonable structure, and smooth surface, it can not only protect the filter bag to the maximum extent, reduce losses, but also maintain stable dust removal efficiency, reduce operation and maintenance costs, and ensure long-term stable operation of the equipment.
Hot Tags:
PREVIOUS:
Contact Us
Tel:
WeChat:
WhatsApp:
E-mail:
Address:
338 National Road South, Longfengdian Village, Botou City, Hebei Province, China
JiuznTomine is expertly delivering technically complicated projects in markets & provides custom solutions for their customized need.
CONTACT INFO
Tel: +86 18531710311
WeChat: +86-18531710311
338 National Road South, Longfengdian Village, Botou City, Hebei Province, China