Vertical air pipe outer supporting and protecting device for unstructured wall
By covering the vertical duct with a protective pipe and fixing it to the structural wall, a double-layer protective structure is formed, which solves the protection problem of vertical ducts passing under floors in areas without structural walls, and realizes the safe, energy-saving and efficient operation of the ventilation system.
Patent Information
- Application Number
- CN202520910847.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-05-09
AI Technical Summary
Vertical ducts passing under floors in areas without structural walls or attachments lack effective protection, making it difficult to guarantee the safety and efficiency of the ventilation system.
A protective duct is used to cover the vertical air duct. The duct is fixed to the vertical air duct by a ring-shaped reinforcing plate, the gaps are filled with rock wool, and it is connected to the structural wall by a fixed frame to form a double-layer protective system.
It enables safe, energy-saving, and long-term operation of vertical air ducts in areas without structural walls. It has good corrosion resistance and sound insulation, is easy to install and disassemble, reduces construction technical requirements, improves turnover efficiency, and has economic and social benefits.
Smart Images

Figure CN223953470U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of building and mechanical and electrical installation, especially a vertical air pipe outer support protection device for structureless wall. BACKGROUND
[0002] Now in the field of engineering construction, under the marketization environment, ventilation pipe protection is an important link to ensure the safe and efficient operation of ventilation system in building, industry and public facilities, and the combination of regular maintenance and innovative technology will be the key to improve the protection efficiency in the future. In the process of on-site use, the outer protection of ventilation pipe is usually structure wall, and the vertical air pipe of lower floor in the area without structure wall and attachment needs effective protection to make the ventilation pipe realize safe, energy-saving and long-term operation. Therefore, it is imperative to invent a new ventilation outer support protection pipe. SUMMARY
[0003] In view of the above situation, in order to solve the defects of the prior art, the purpose of the utility model is to provide a vertical air pipe outer support protection device for structureless wall, which can effectively solve the protection problem of vertical air pipe of lower floor in the area without structure wall and attachment.
[0004] The technical scheme provided by the utility model is that the vertical air pipe, the protection pipe and the fixed frame are included, the vertical air pipe penetrating the upper and lower floors is covered with the protection pipe, the vertical air pipe and the protection pipe are fixed through the annular reinforcing plate, the gap between the two is filled with rock wool, and the protection pipe is fixed together with the structure wall of each floor through the fixed frame.
[0005] In an preferred embodiment, the fixed frame is L-shaped, one side of which is fixed with the protection pipe, and the other side is fixed with the structure wall.
[0006] In an preferred embodiment, the protection pipe is fixed with the fixed frame through the tension bolt.
[0007] In an preferred embodiment, the fixed frame is fixed with the structure wall through the anchor bolt.
[0008] In an preferred embodiment, the surface of the anchor bolt is galvanized or coated with epoxy resin to prevent rust in humid environment.
[0009] In an preferred embodiment, the protection pipe is formed by bending, pressing and welding a stainless steel plate, with a diameter of 800mm and a height of 4m.
[0010] In an preferred embodiment, the fixed frame is made of galvanized angle steel, with each side being 50mm long, 50mm wide and 5mm thick.
[0011] In a preferred embodiment, the protective duct is arranged concentrically with the vertical air duct.
[0012] The utility model has the advantages of:
[0013] 1. The double-layer structure of the protective duct with external support is added to the installation of the vertical air duct passing through the floor in the non-structural wall and the attached area, so that the ventilation duct realizes safe, energy-saving and long-term operation.
[0014] 2. The protective duct is easy to process, corrosion-resistant, simple and reasonable, easy to disassemble and recycle, safe and reliable, has low requirements on construction technology, high turnover efficiency, low energy consumption, safety and environmental protection, and can be widely applied to various external protective ducts. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 is a front elevation view of the utility model;
[0016] Fig. 2 is a detail view of the wall fixing node of the utility model.
[0017] Fig. 3 is a cross-sectional structure schematic view of the utility model.
[0018] In the drawings, the vertical air duct 1, the structural wall 2, the protective duct 3, the fixed frame 4, the anchor bolt 5, the tension bolt 6, the annular reinforcing plate 7 and the rock wool 8 are shown. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0020] As shown in Figs. 1-3 A vertical air duct external support protective duct for non-structural walls includes a vertical air duct 1, a protective duct 3 and a fixed frame 4. The vertical air duct 1 passing through the upper and lower floors is covered with the protective duct 3. The vertical air duct 1 and the protective duct 3 are fixed through the annular reinforcing plate 7. The gap between them is filled with rock wool 8. The protective duct 3 is fixed together with the structural wall 2 of each floor through the fixed frame 4.
[0021] The vertical air duct 1 and the protective duct 3 are connected together by flanges.
[0022] In a preferred embodiment, the fixed frame 4 is L-shaped, one side is fixed with the protective pipe 3, and the other side is fixed with the structural wall 2.
[0023] In a preferred embodiment, the protective pipe 3 is fixed with the fixed frame 4 by the tension bolt 6, which penetrates the protective pipe wall and the fixed frame, and is locked by double nuts to eliminate the gap and prevent the bolt from loosening due to vibration. The bolt connection facilitates local disassembly for maintenance or replacement of damaged sections of the protective pipe, reducing the impact of maintenance on the overall system.
[0024] In a preferred embodiment, the fixed frame 4 is fixed with the structural wall 2 by the anchor 5, which rigidly connects the fixed frame and the structural wall. Chemical or mechanical anchors can be used to ensure that the pullout force is greater than the load transmitted by the protective pipe. An elastic gasket is provided at the anchor joint to allow slight displacement to absorb seismic energy and reduce the risk of stress concentration at the connection site.
[0025] In a preferred embodiment, the anchor surface is galvanized or coated with epoxy resin to prevent rust in a humid environment.
[0026] In a preferred embodiment, the protective pipe 3 is made of stainless steel plate, which is bent, pressed, and welded to form a diameter of 800 mm and a height of 4 m. The diameter can be adjusted and customized according to the pipe diameter, and the height can be adjusted according to the building height. Stainless steel has strong corrosion resistance, and welding ensures overall airtightness. The bending and pressing process improves structural rigidity and prevents local sagging.
[0027] In a preferred embodiment, the fixed frame 4 is made of galvanized angle steel, each side being 50 mm wide, 50 mm thick, and 5 mm thick. The L-shaped galvanized angle steel transmits the weight, wind load, and seismic force of the protective pipe to the structural wall, preventing the protective pipe from sagging or deviating due to its own weight. Fixed frames are provided at each level to form a segmented support system, reducing the pressure on the bottom structure caused by the accumulation of cross-layer loads. The 5 mm thickness provides sufficient bending stiffness, taking into account strength and corrosion resistance.
[0028] In a preferred embodiment, the protective pipe 3 is arranged on the same centerline as the vertical air pipe 1 to prevent eccentric force from causing connection node failure.
[0029] In a preferred embodiment, the ring-shaped reinforcing plate 7 is provided with multiple equal intervals, with a spacing of 0.8-1 m.
[0030] In a preferred embodiment, the ring-shaped reinforcing plate 7 is welded to the vertical air pipe 1 and the protective pipe 3, respectively.
[0031] The use condition of the utility model is, vertical air pipe as the key component of ventilation system, through the upper and lower floors, bear gas delivery function, protective pipe 3 can resist external mechanical damage, chemical corrosion and extreme temperature influence, stainless steel material corrosion resistance is strong, can prolong the life of air pipe, welding forming ensures the overall airtightness, bending compression process improves the structure stiffness, prevents local depression, low maintenance cost, through the synergistic effect of each component, the support system can still realize air pipe safety protection and efficient operation and maintenance under the scene of no independent structure wall, especially suitable for reconstruction project or non-standard building space.
[0032] The installation of the vertical air pipe of the lower floor of the structure wall and the attached area adopts the double-layer structure of the increased outer support protective pipe, the protective pipe 3 covers the outside of the vertical air pipe 1, plays a multiple protection role, and is filled with rock wool between the two, can effectively resist the possible collision, scratching and other physical damage from the outside, prevents the vertical air pipe 1 from being damaged, and prolongs the service life; meanwhile, the protective pipe 3 also has certain heat insulation and sound insulation effects, reduces the influence of heat loss and noise generated during operation on the surrounding environment. It is made of stainless steel plate bending compression welding forming, is firm and durable, has a diameter of 800mm and a height of 4m, and can be flexibly adjusted and customized according to the actual diameter of the pipe and the building height, so as to adapt to different use scenes and requirements; and is fixed with the upper and lower floors by the fixed frame 4, the fixed frame 4 is in L shape and is made of galvanized angle steel, has good strength and corrosion resistance. One side is fixed with the protective pipe 3 and provides a stable support structure for the protective pipe 3, so that the position of the protective pipe 3 is stable after installation; the other side is fixed with the structure wall 2, connects the whole protective pipe 3 and the vertical air pipe 1 with the structure wall 2 of each floor, makes the whole protective system closely combined with the building structure, and ensures that the vertical air pipe and the protective pipe can stably run under various working conditions and do not displace or shake. The vertical air pipe 1 is in the form of normal galvanized steel plate plus flange connection, the outer protective pipe 3 is in the form of stainless steel plate plus flange connection, and the fixed frame 4 is used for fixing the upper and lower floor slabs, increases the protection and wind pressure resistance of the air pipe, the protective pipe is prefabricated in sections and assembled on site, cooperates with the fixed frame to realize rapid installation, and is suitable for engineering projects with tight construction period. The protective pipe 3 is firmly fixed with the fixed frame 4 by the stud bolt 6. The protective pipe 3 is tightly attached to the fixed frame 4 through the fastening effect of the stud bolt 6, guarantees the tightness and stability of the connection between the two, prevents the protective pipe 3 from loosening and separating from the fixed frame 4 during use, and ensures the integrity and effectiveness of the protective structure. The anchor bolt 5 stably connects the fixed frame 4 with the structure wall 2. The anchor bolt 5 penetrates into the structure wall 2, utilizes the strong anchoring force to firmly fix the fixed frame 4 on the wall, and then reliably attaches the whole vertical air pipe outer support protective pipe system to the building structure, guarantees the safety and stability of the system during long-term use.
[0033] The utility model discares convenient, safe and reliable, appearance is beautiful, no garbage is produced after dismounting, and panel part can do cultural propaganda arbitrarily, not only have the safe function still have low maintenance cost, beautiful, convenient, propaganda public welfare and so on function, compare with existing protection form, the utility model structure is easy to process, corrosion -resistant, simple and reasonable, convenient and recycling use, safe and reliable and low to construction technical requirement, high turnover efficiency, low energy consumption, and can be recycled and reprocessed, can be widely used in the protection of each project structureless area air pipe, has good economic benefit and social benefit.
Claims
1. A vertical duct external support and protection device for unstructured walls, characterized in that, It comprises vertical air pipe (1), protective pipe (3) and fixed frame (4), the vertical air pipe (1) is covered with protective pipe (3) through the floor, the vertical air pipe (1) and protective pipe (3) are fixed through annular reinforcing plate (7), the gap between the two is filled with rock wool (8), and the protective pipe (3) is fixed with the structure wall (2) of each floor through fixed frame (4).
2. The vertical tube and collar support guard for a non-structural wall according to claim 1, wherein, The vertical air pipe (1) and protective pipe (3) are connected together by flange.
3. The vertical tube and collar support guard for a non-structural wall according to claim 1, wherein, The fixed frame (4) is L-shaped, one side is fixed with the protective pipe (3), and the other side is fixed with the structure wall (2).
4. The vertical tube and collar support guard for a non-structural wall according to claim 1, wherein, The protective pipe (3) is fixed with the fixed frame (4) through the tension bolt (6).
5. The vertical tube and collar support guard for a non-structural wall according to claim 1, wherein, The fixed frame (4) is fixed with the structure wall (2) through anchor bolt (5).
6. The vertical tube and collar support guard for a non-structural wall according to claim 5, wherein, The surface of the anchor bolt (5) is galvanized or coated with epoxy resin.
7. The vertical tube and collar support guard for a non-structural wall according to claim 1, wherein, The protective pipe (3) is made of stainless steel plate, which is bent, pressed and welded, with a diameter of 800 mm and a height of 4 m.
8. The vertical tube and collar support guard for a non-structural wall according to claim 1, wherein, The fixed frame (4) is made of galvanized angle steel, with each side being 50 mm long, 50 mm wide and 5 mm thick.
9. The vertical tube-outside bracing protector for a non-structural wall according to claim 1, wherein, The protective pipe (3) is arranged on the same center line with the vertical air pipe (1).
10. The vertical tube-outside bracing protector for a non-structural wall according to claim 1, wherein, The annular reinforcing plate (7) is provided with multiple equal intervals, with a spacing of 0.8-1 m, and the annular reinforcing plate (7) is welded with the vertical air pipe (1) and protective pipe (3) respectively.