8-meter three section circular bag cage skeleton

2. The bag cage bone is made of 20 # low carbon steel and produced on an automatic assembly line. After the bag cage is welded, the welding point is firm, smooth, without burrs, and has sufficient strength to prevent detachment, virtual welding, and leakage. The surface in contact between the bag cage and the filter bag should be smooth and clean, without welding scars, unevenness, or burrs. The cage body is effectively protected by organic silicon electrostatic spraying, baking, or other coatings with better performance, with a coating thickness of 60 μ m to 100 μ m based on the performance of the bag cage. The service life of the bag cage is 80000h.
3. All welding points of the bag cage should be firmly welded, and there should be no loose welding, virtual welding, or missed welding.
4. The surface in contact between the bag cage and the filter bag should be smooth and clean, without welding scars, unevenness, burrs, or damage to the bag.
5. The bag cage should be made in three sections and connected with clips, requiring easy and secure connection. Each set of bag cage should be equipped with 4 spring cards.
6. Strictly, all longitudinal bars are vertical, and the overall verticality deviation of the bag cage is 5mm.
7. The packaging of each bag cage adopts the form of iron flower basket and rainproof tarpaulin. The bag cage should be avoided from moving and colliding in the packaging box, and should not be damaged during loading, unloading and transportation.
8. The three section circular bag cage skeleton, filter bag skeleton, bag skeleton, and dust collector skeleton with diameters of 120, 15, 130, 127, 150, 155, 170, and 8 meters are required to be perpendicular to the head cover as a whole, and the upper, middle, and lower sections should be connected together to form a straight line without bending. The verticality requirement is not more than 5mm.
9. Surface treatment: After the cage frame is processed, it is subjected to decontamination treatment, inspection and treatment of welding scars and burrs, and then treated with organic silicon spraying and other treatments. The organic silicon is made of DuPont powder in the United States.
10. The spraying of bag cage organic silicon powder should have a high-temperature baking process, with a spraying range of the entire bag cage, paying special attention to the welding of longitudinal and transverse ribs, ensuring comprehensive and complete coverage without any omissions. Organic silicon spraying should be uniform, reliable, and not fall off. The spraying thickness should not be less than 80 μ m, and the thickness should be uniform and the surface should be smooth after spraying. After spraying, it can meet the requirements of operating temperature (long-term 170 ℃, instantaneous 230 ℃) and flue gas composition (mainly coal-fired boiler flue gas).
11. The high-temperature spraying of bag cage organic silicon meets the following process flow:
Finished bag cage - degreasing - cleaning - rust removal - cleaning - phosphating - drying - painting - baking - heat setting - cooling
12. Firstly, immerse the processed bag cage into the oil removal tank for 15 minutes to remove any oil stains on the surface of the bag cage.
13. Put the degreased bag cage into the cleaning tank for soaking and cleaning to remove the degreaser on the bag cage.
14. Afterwards, the bag cage is placed in a rust removal tank for rust removal treatment, with the aim of removing the metal oxide layer on the bag cage and enhancing its adsorption capacity..
15. Remove the bag cage from the rust removal tank and place it in the phosphating tank for phosphating treatment to enhance the adhesion of the bag cage surface.
16. Afterwards, place it in the oven and dry it at a temperature of 100 ℃ for 20-30 minutes to remove any moisture from the bag cage and keep the bag cage dry..
17. Remove the bag cage and evenly spray the prepared silicone onto the surface of the bag cage. The coating thickness is 80-100 μ m.
18. Place the sprayed bag cage in the oven at a temperature of 220 ℃ and bake for 120 minutes. Afterwards, maintain 200 ℃ and perform 30 minutes of heat setting.
23. The bag cage can prevent damage and deformation caused by collisions and impacts during normal transportation and installation.
24. After connecting the three sections of the bag cage, it should be straight and not allowed to shake between the connections. The axial verticality deviation of the bag cage is ≤ 10mm, and the concentricity deviation of the three sections of the bag cage is less than 1mm. The allowable deviation of the bag cage length is negative deviation of 0-10mm.
25. All welding points of the bag cage should be firmly welded, and there should be no loose welding, virtual welding, or missed welding.
26. During the production of the bag cage support ring, the joints should be aligned neatly. After the joints are completed, the joints should be polished to ensure a smooth and polished surface.
27. The surface of the bag cage in contact with the filter bag should be smooth and clean, without welding scars, unevenness, or burrs.
28. The normal operating temperature of the bag cage is 105-165 ℃, and the allowable operating temperature is 200 ℃. The bag cage can adopt a multi section structure, and the interface will not lose elasticity in environments below 200 ℃ for a long time.
29. The service life of the three section circular bag cage skeleton, filter bag skeleton, bag skeleton, and dust collector skeleton with diameters of 120, 15, 130, 127, 150, 155, 170, and 8 meters under normal working conditions is 2 filter bag replacement cycles, which is 60000 hours.
30. No special tools are required, and the bag cage can be easily disassembled and installed.