Modularized drawer type vertical ventilation finished shaft

Abstract

The utility model discloses a modularized drawer type vertical ventilation finished shaftway, which relates to the technical field of buildings, and comprises an angle steel frame, a square tube skeleton, a steel plate and a fireproof plate, angle steel hangers are welded on the side surface and the lower surface of the angle steel frame, and the angle steel frame and the angle steel hangers are coated with a common expansion type steel structure fireproof coating. Steel plates are fixedly riveted to the inner sides of the square tube frameworks, fireproof plates are fixedly connected to the outer sides of the square tube frameworks, glass wool or rock wool plates are arranged between the steel plates and the fireproof plates, and the square tube frameworks are slidably arranged in the angle steel frame in a drawer mode. The angle steel frame serves as a foundation frame of the whole well and provides stable structural support for the well, and the overall shape and stability of the well are maintained. The angle steel hangers welded on the upper and lower surfaces of the angle steel frame are convenient to connect and fix with building structures such as floors. And the angle steel frame and the angle steel hangers are coated with common intumescent steel structure fireproof coatings.

Description

Technical Field

[0001] This utility model relates to the field of building technology, and in particular to a modular drawer-type vertical ventilation shaft. Background Technology

[0002] In modern building engineering, the performance of the interaction between floor slabs and vertical ventilation shafts directly affects the ventilation quality and safety of a building. Traditional vertical ventilation shafts have many problems. Limited space for duct installation within brick masonry shafts leads to long construction periods, low duct installation quality, inability to maintain and repair later, inability to install fire dampers within enclosed shafts, and lack of airflow regulation. In the event of a fire, the brickwork collapses, allowing fire to spread rapidly through the shaft, posing a serious safety hazard. Furthermore, traditional shafts are complex to construct, inconvenient to install, costly, prone to pollution, generate excessive noise during ventilation, and are difficult to maintain later. Therefore, developing a modular, drawer-type prefabricated vertical ventilation shaft that is structurally stable, fire-resistant, easy to install and maintain, and reduces noise is of great significance for improving building quality and safety. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a modular drawer-type vertical ventilation prefabricated shaft.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] This application provides a modular drawer-type vertical ventilation shaft, including an angle steel frame, a square tube skeleton, steel plates, and fireproof plates. Angle steel lugs are welded to the sides and bottom of the angle steel frame. The angle steel frame and the angle steel lugs are coated with ordinary intumescent steel structure fireproof coating. The steel plates are riveted and fixed to the inner side of the square tube skeleton, and the fireproof plates are fixedly connected to the outer side of the square tube skeleton. Glass wool or rock wool board is provided between the steel plates and the fireproof plates. The square tube skeleton is slidably installed in a drawer-like manner inside the angle steel frame.

[0006] Furthermore, the fireproof board is fixedly connected to the square tube frame by self-tapping screws.

[0007] Furthermore, the fireproof board is a fiber-reinforced calcium silicate fireproof board.

[0008] Furthermore, the steel plate is a galvanized thin steel plate.

[0009] Furthermore, the angle steel frame and the floor slab are sealed together using fireproof sealing strips.

[0010] Furthermore, the gap between the square tube skeleton and the angle steel frame is sealed with sealant.

[0011] Furthermore, the thickness of the fiber-reinforced calcium silicate fireproof board is 6-15mm.

[0012] Furthermore, the thickness of the glass wool is 35-50mm.

[0013] Furthermore, the wall thickness of the angle steel frame is 4-5mm.

[0014] Furthermore, the angle steel lugs are provided with holes, and the angle steel frame is fixed to the floor slab by expansion bolts passing through the holes.

[0015] The beneficial effects of this utility model are:

[0016] 1) Steel plates are riveted and fixed to the inner side of the square tube frame, while fireproof boards are fixedly connected to the outer side. This acts as a bridge connecting the internal steel plates and the external fireproof boards, ensuring a tight fit between all parts and forming a complete and stable structural system. Glass wool or rock wool boards are filled between the steel plates and the fireproof boards, providing excellent thermal insulation performance. During ventilation, they effectively reduce heat transfer, lower energy consumption, help maintain stable internal building temperatures, and improve energy efficiency. These materials also have good sound absorption properties, absorbing noise generated during ventilation and reducing noise interference from the ventilation system to the surrounding environment, providing a relatively quiet and comfortable environment for occupants.

[0017] 2) Fiber-reinforced calcium silicate fireproof boards possess excellent fireproof and heat insulation properties. Being non-combustible, they effectively prevent the spread of fire. In the event of a fire, they can withstand high temperatures without burning or deforming, providing a reliable fire protection barrier for ventilation equipment within the shaft and surrounding building structures, extending fire resistance time and buying valuable time for evacuation and fire rescue. The fiber-reinforced nature gives them high strength and good toughness, enabling them to withstand certain external impacts without easily breaking or being damaged.

[0018] 3) Galvanized steel sheets possess sufficient strength and rigidity to provide necessary support for the shaft structure. Working together with square tube frames and angle steel frames, they enhance the overall structural stability of the shaft. They are resistant to deformation when subjected to internal pressures generated during ventilation system operation and potential external impacts, ensuring the normal use of the shaft. The galvanized layer forms a dense protective film on the steel sheet surface, effectively isolating it from air and moisture, significantly improving its corrosion resistance and reducing structural damage and maintenance costs caused by corrosion. Attached Figure Description

[0019] Figure 1 This is a 3D view of the finished shaft.

[0020] Figure 2 This is a three-dimensional view of the angle steel frame;

[0021] Figure 3 This is a three-dimensional view of the square tube frame;

[0022] Figure 4 This is a sectional view of the finished shaft.

[0023] In the diagram, 1-angle steel frame, 2-square tube skeleton, 3-steel plate, 4-fireproof board, 5-angle steel lug, 6-hole. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] See Figures 1-4 This utility model provides a technical solution:

[0026] A modular drawer-type vertical ventilation shaft includes an angle steel frame 1, a square tube frame 2, steel plates 3, and fireproof boards 4. Angle steel lugs 5 are welded to the sides and bottom of the angle steel frame 1. The angle steel frame 1 and the angle steel lugs 5 are coated with ordinary intumescent steel structure fireproof paint. The steel plates 3 are riveted to the inner side of the square tube frame 2, and the fireproof boards 4 are fixedly connected to the outer side of the square tube frame 2. Glass wool or rock wool boards are placed between the steel plates 3 and the fireproof boards 4. The square tube frame 2 is slidably installed in a drawer-like manner within the angle steel frame 1. The angle steel frame 1 serves as the basic frame of the entire shaft, providing stable structural support and maintaining the overall shape and stability of the shaft. The angle steel lugs 5 welded to the top and bottom of the angle steel frame 1 facilitate connection and fixation to building structures such as floor slabs. The angle steel frame 1 and the angle steel lugs 5 are coated with ordinary intumescent steel structure fireproof coating FP1.00. In the event of a fire, this fireproof coating expands upon heating, forming a heat-insulating protective layer. This effectively slows down the temperature rise of the angle steel frame 1, increases its fire resistance limit, prevents the rapid spread of fire through the steel structure, and enhances the fire resistance of the shaft. The square tube frame 2 is riveted to the inner side with steel plates 3 and fixed to the outer side with fireproof boards 4, acting as a bridge connecting the internal steel plates 3 and the external fireproof boards 4, ensuring a tight connection between all parts and forming a complete and stable structural system. Glass wool or rock wool boards are filled between the steel plates 3 and the fireproof boards 4, providing excellent thermal insulation performance. During ventilation, this effectively reduces heat transfer, lowers energy consumption, helps maintain a stable internal temperature, and improves energy efficiency. These materials also have good sound absorption properties, absorbing noise generated during ventilation, reducing noise interference from the ventilation system, and providing a relatively quiet and comfortable environment for people inside the building. The square tube frame 2 set inside the angle steel frame 1 further enhances the structural strength of the shaft. Working together with the angle steel frame 1, it improves the overall load-bearing capacity of the shaft, enabling it to better adapt to different installation environments and usage requirements. The square tube frame is slidably installed in a drawer-like manner inside the angle steel frame, which is particularly beneficial for installation on holes surrounded by two or three concrete walls.

[0027] In some embodiments, the fireproof board 4 is fixedly connected to the square tube frame 2 using self-tapping screws. These self-tapping screws do not require pre-drilling and can be directly screwed into the fireproof board 4 and the connected square tube frame 2, simplifying the operation, significantly saving installation time, and improving construction efficiency. On the construction site, workers can quickly complete the fixing of the fireproof board 4, shortening the overall construction cycle, and is particularly suitable for the installation of vertical ventilation shafts in large-scale building projects. The self-tapping screws can tightly engage with the fireproof board 4, providing a stable connection force, making the fireproof board 4 less prone to loosening or falling off during long-term use.

[0028] In some embodiments, the fireproof board 4 is a fiber-reinforced calcium silicate fireproof board. The fire resistance rating of the fiber-reinforced calcium silicate fireproof board should reach 1.50 hours. It possesses excellent fire-resistant and heat-insulating properties, is non-combustible, and effectively prevents the spread of fire. In the event of a fire, it can withstand high temperatures without burning or deforming, providing a reliable fire protection barrier for ventilation equipment and surrounding building structures within the shaft, extending fire resistance time, and buying valuable time for personnel evacuation and fire rescue. The fiber reinforcement gives it high strength and good toughness, enabling it to withstand certain external impacts without easily cracking or being damaged. This fireproof board 4 is insensitive to humidity changes and has good moisture-proof properties, effectively preventing mold and corrosion caused by humid environments. This is crucial for ventilation shafts, where humidity may fluctuate, preventing damage to the board from moisture that could affect fire resistance and overall structural stability. During production and use, the fiber-reinforced calcium silicate fireproof board does not release harmful gases, is harmless to humans and the environment, meets the requirements of modern buildings for environmentally friendly materials, and contributes to creating a green and healthy building environment.

[0029] In some embodiments, the steel plate 3 is a galvanized thin steel plate. The galvanized thin steel plate possesses a certain strength and rigidity, providing necessary support for the shaft structure. Working together with the square tube frame 2 and angle steel frame 1, it enhances the overall structural stability of the shaft. It is not easily deformed when subjected to internal pressure generated during ventilation system operation and potential external impacts, ensuring the normal use of the shaft. The galvanized layer forms a dense protective film on the surface of the steel plate 3, effectively isolating it from air and moisture corrosion, greatly improving its corrosion resistance and reducing structural damage and maintenance costs caused by corrosion. Simultaneously, while ensuring product quality, it provides an economical and practical material choice for construction projects. It also has good processing performance, facilitating riveting, cutting, bending, and other processing operations, allowing for customized production according to the shaft design requirements to meet the size and shape needs of vertical ventilation shafts in different construction projects.

[0030] In some embodiments, the angle steel frame 1 is sealed to the floor slab using a fire-resistant sealing strip. The floor slab is an indispensable component of a building; its design and construction directly affect the building's safety and functionality. The floor slab is an important horizontal load-bearing component in the construction field, primarily used to separate the upper and lower floors and bear vertical loads (such as the weight of people and furniture) as well as its own weight. In the event of a fire, the fire-resistant sealing strip effectively prevents the spread of flames, heat, and smoke through the connection between the angle steel frame 1 and the floor slab or through gaps between sections of the shaft. Vertical shafts in buildings are prone to forming a chimney effect during a fire, accelerating the spread of fire. This sealed connection can disrupt the conditions for the chimney effect, confining the fire to a certain area and buying more time for evacuation and fire rescue. From the perspective of building fire protection codes, this ensures the integrity of the entire vertical ventilation shaft as a fire-resistant unit. Compliance with fire safety standards helps the building pass fire safety inspections and protects the lives and property of people inside the building. In addition to its fireproof function, the sealing strip can also fill the tiny gaps at the joints, making the connection between the angle steel frame 1 and the floor slab and each section tighter. This enhances the stability of the overall shaft structure to a certain extent and reduces the possibility of loosening at the joints due to factors such as vibration and settlement.

[0031] In some embodiments, the gap between the square tube frame 2 and the angle steel frame 1 is sealed with sealant. During ventilation, the sealant prevents air leakage from the gap between the square tube frame 2 and the angle steel frame 1, ensuring that the air in the duct flows along the designed path, reducing air leakage, thereby improving the efficiency of the ventilation system, ensuring that the ventilation effect meets design requirements, and maintaining a good air environment inside the building. The sealant also prevents external dust, moisture, etc., from entering the shaft, avoiding damage such as corrosion and wear to the square tube frame 2, steel plate 3, and other internal components, and extending the service life of the internal structure of the shaft. During ventilation system operation, airflow may cause vibration and noise between the square tube frame 2 and the angle steel frame 1. After the sealant fills the gap, it provides a certain damping effect, reducing the vibration amplitude and thus reducing the noise generated by vibration, creating a quieter environment inside the building.

[0032] In some embodiments, the fiber-reinforced calcium silicate fireproof board has a thickness of 6-15mm. A thickness of 10mm provides the fiber-reinforced calcium silicate fireproof board with good fire resistance, effectively blocking heat transfer and fire spread, meeting the basic fire safety requirements of ventilation shafts. At the same time, this thickness does not excessively occupy space; for vertical ventilation shafts with limited space, it preserves as much space as possible for ventilation while ensuring fire resistance, thus ensuring the smooth operation of the ventilation system. The board of this thickness is strong enough to maintain its structural stability and is not easily damaged by external forces during installation and use.

[0033] In some embodiments, the glass wool is 35-50mm thick. Specifically, when the duct is used in stairwells or vestibules, the square tube frame 2 is filled with glass wool; when used in public areas, the square tube steel frame is filled with rock wool boards. A 40mm thick glass wool or rock wool board significantly improves the thermal insulation performance of the shaft, effectively reduces heat transfer during ventilation, lowers energy consumption, and plays a positive role in maintaining stable building temperatures. Simultaneously, this thickness also enhances the sound absorption capacity of the board, more effectively absorbing noise generated during ventilation and creating a quiet and comfortable environment inside the building.

[0034] In some embodiments, the wall thickness of the angle steel frame 1 is 4-5 mm. A wall thickness of 5 mm provides the angle steel frame 1 with sufficient strength and rigidity to stably support the weight of the entire shaft and withstand various external forces that may occur during use, such as wind force and building settlement stress. This ensures that the shaft maintains a stable structural form during long-term use and is not prone to deformation or damage. This wall thickness meets structural support requirements without making the angle steel frame 1 excessively heavy, reducing material costs and facilitating handling, welding, and installation during construction, thus improving construction efficiency and making the entire shaft construction process more economical and efficient.

[0035] In some embodiments, the angle steel lug 5 has holes 6, and the angle steel frame 1 is fixed to the floor slab by expansion bolts passing through the holes 6. The holes 6 provide precise positioning for the expansion bolts, allowing construction workers to quickly and accurately insert them, simplifying the connection process between the angle steel frame 1 and the floor slab. This eliminates the need for on-site measurement and drilling, significantly shortening installation time and improving construction efficiency. For the installation of multiple ventilation shafts in large-scale building projects, this effectively accelerates the project progress. Different building floor structures and load-bearing requirements vary; by creating the holes 6, different specifications of expansion bolts can be selected according to the actual situation to adapt to different installation conditions. Furthermore, if maintenance, adjustment, or component replacement of the shaft is required later, the holes 6 make disassembling and replacing the expansion bolts more convenient, increasing the flexibility and operability of the connection method. A 5mm thick heat-resistant rubber sheet is placed under the expansion bolts connecting the angle steel frame 1 to the floor slab. When the building vibrates due to various reasons, it acts as a buffer and damper, reducing friction and stress between the angle steel frame 1 and the floor slab caused by vibration, protecting the structural integrity of the connection point, and extending the service life of the shaft. The heat-resistant rubber sheet also has certain heat resistance properties, which can assist in fire prevention in the event of a fire, further preventing heat transfer through the connection point and enhancing the fire resistance of the connection between the shaft and the floor slab.

[0036] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "one end", "top", "middle", "other end", "coaxial", "one side", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "setting", "installation", "connection", "fixing", "hinged" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A modular drawer-type vertical ventilation shaft, characterized in that: The system includes an angle steel frame (1), a square tube skeleton (2), a steel plate (3), and a fireproof board (4). Angle steel lugs (5) are welded to the sides and bottom of the angle steel frame (1). The angle steel frame (1) and the angle steel lugs (5) are coated with ordinary intumescent steel structure fireproof paint. The steel plate (3) is riveted and fixed to the inner side of the square tube skeleton (2). The fireproof board (4) is fixedly connected to the outer side of the square tube skeleton (2). Glass wool or rock wool board is provided between the steel plate (3) and the fireproof board (4). The square tube skeleton (2) is slidably installed in the angle steel frame (1) in a drawer-like manner.

2. The modular drawer-type vertical ventilation shaft according to claim 1, characterized in that: The fireproof board (4) is fixedly connected to the square tube frame (2) by self-tapping screws.

3. A modular drawer-type vertical ventilation shaft as described in claim 2, characterized in that: The fireproof board (4) is a fiber-reinforced calcium silicate fireproof board.

4. A modular drawer-type vertical ventilation shaft as described in claim 1, characterized in that: The steel plate (3) is a galvanized thin steel plate.

5. A modular drawer-type vertical ventilation shaft as described in claim 1, characterized in that: The angle steel frame (1) is sealed to the floor slab with a fireproof sealing strip.

6. A modular drawer-type vertical ventilation shaft as described in claim 1, characterized in that: The gap between the square tube frame (2) and the angle steel frame (1) is sealed with sealant.

7. A modular drawer-type vertical ventilation shaft as described in claim 3, characterized in that: The thickness of the fiber-reinforced calcium silicate fireproof board is 6-15mm.

8. A modular drawer-type vertical ventilation shaft as described in claim 1, characterized in that: The thickness of the glass wool is 35-50mm.

9. A modular drawer-type vertical ventilation shaft as described in claim 6, characterized in that: The wall thickness of the angle steel frame (1) is 4-5mm.

10. A modular drawer-type vertical ventilation shaft as described in claim 1, characterized in that: The angle steel lug (5) has a hole (6), and the angle steel frame (1) is fixed to the floor slab by means of expansion bolts passing through the hole (6).

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