Double-layer curtain wall structure

Abstract

The invention relates to a double-layer curtain wall structure which comprises a curtain wall frame, an inner curtain wall and an outer curtain wall, the inner curtain wall and the outer curtain wall are fixedly connected to the curtain wall frame, a moving seat is slidably connected to the side wall, close to the outer curtain wall, of the curtain wall frame in the vertical direction, a water conservancy driving part is arranged on the curtain wall frame, and one end of the water conservancy driving part is connected with the moving seat; a rotating roller is rotationally connected to the moving seat, a cleaning brush is fixedly connected to the rotating roller, a rotating driving part is arranged on the curtain wall frame, one end of the rotating driving part is connected with the rotating roller, and the rotating driving part can drive the rotating roller to rotate; the water conservancy driving part comprises a threaded rod, a rotating barrel, a water outlet, a forward water inlet pipe, a reverse water inlet pipe and rotating fan blades, the rotating fan blades are rotationally connected into the rotating barrel, and the reverse water inlet pipe communicates with the rotating barrel and is opposite to the rotating fan blades, so that the outer curtain wall on the outer layer can be cleaned, dust on the glass on the outer layer is reduced, and the service life of the outer curtain wall is prolonged. Therefore, high-altitude operation of personnel is avoided, and falling risks are reduced.

Description

Technical Field

[0001] This invention relates to the technical field of double-layer curtain wall structures, and in particular to a double-layer curtain wall structure. Background Technology

[0002] Modern high-rise buildings commonly employ double-layer curtain wall structures as their exterior cladding systems. Curtain walls are non-load-bearing components, fixed to the main building structure via suspension; due to their curtain-like installation characteristics, they are also known as "curtain walls." This structure is an exterior cladding system for large high-rise buildings that combines decorative functions with lightweight features. Based on differences in ventilation principles, double-layer curtain walls can be divided into two main types: external circulation and internal circulation.

[0003] The outer layer of the externally circulated double-layer curtain wall uses a single-pane glass structure with air inlets at the bottom and exhaust vents at the top. The inner layer uses insulated glass with thermally insulating profiles and is fitted with operable windows or doors. The system operates entirely on natural ventilation mechanisms, requiring no additional mechanical equipment. Solar radiation heat rises naturally through air channels and is ultimately exhausted from the building through the upper exhaust vents.

[0004] The outer layer of the internal circulation double-layer curtain wall uses a closed structure composed of insulated glass and thermally insulated profiles, while the inner layer uses single-pane glass or single-pane aluminum alloy doors and windows that are kept openable. The system forces airflow through mechanical ventilation devices such as central air conditioning. The airflow enters the channel from the floor slab or underground air vents and is then guided into the ceiling space through the upper exhaust vents to complete the circulation.

[0005] Both systems share the characteristic of using glass for their outer curtain walls. Prolonged exposure to the outdoor environment leads to the accumulation of ash, dirt, and bird droppings on the glass surface, significantly reducing light transmittance and detracting from the building's visual appeal. Traditional cleaning methods rely on manual work at heights, posing a risk of falls and serious safety hazards to operators. Summary of the Invention

[0006] The purpose of this invention is to solve the problems in the prior art by proposing a double-layer curtain wall structure that can clean the outer curtain wall, reduce the generation of dust on the outer glass, and thus avoid personnel working at heights and reduce the risk of falls.

[0007] To achieve the above objectives, the present invention proposes a double-layer curtain wall structure, comprising: a curtain wall frame and an inner curtain wall and an outer curtain wall fixedly connected to the curtain wall frame.

[0008] The curtain wall frame has a movable seat that slides vertically on the side wall near the outer curtain wall;

[0009] The curtain wall frame is equipped with a hydraulic drive component, one end of which is connected to the movable base and the other end of which passes through the curtain wall frame.

[0010] A rotating roller is rotatably connected to the movable base, and a cleaning brush is fixedly connected to the rotating roller;

[0011] The curtain wall frame is equipped with a rotation drive component, one end of which is connected to a rotating roller and can drive the rotating roller to rotate.

[0012] The hydraulic drive components include: a threaded rod, a rotating bucket, a water outlet, a forward water inlet pipe, a reverse water inlet pipe, and rotating fan blades;

[0013] The rotating barrel is rotatably connected to the curtain wall frame, the threaded rod is rotatably connected inside the rotating barrel, the rotating fan blade is rotatably connected inside the rotating barrel, and the rotating fan blade is fixedly connected to the threaded rod.

[0014] One end of the forward water inlet pipe is connected to the rotating barrel and is positioned opposite to the rotating fan blades. The reverse water inlet pipe is connected to the rotating barrel and is positioned opposite to the rotating fan blades. Both ends of the forward and reverse water inlet pipes extend to the outside of one side of the curtain wall frame. The water outlet is located at one end of the rotating barrel.

[0015] Preferably, a storage box with a top slot is fixedly connected to the curtain wall frame. The rotating drive, rotating roller, and moving seat are all located below the storage box. The water outlet is connected to the water outlets in the rotating drum away from the forward water inlet pipe and the reverse water inlet pipe. A cavity is opened inside the rotating roller. A water outlet hole is opened on the rotating roller that communicates with the cavity. The water outlet hole is located inside the cleaning brush. A water conveying component is provided inside the storage box. One end of the water conveying component communicates with the cavity.

[0016] Preferably, the rotation drive includes a rack fixedly connected to the curtain wall frame, a rotating rod rotatably connected to the movable seat, a spur gear fixedly connected to the rotating rod, and a variable speed gear set disposed on the movable seat. The variable speed gear set is connected to the rotating roller and the rotating rod, and the spur gear meshes with the rack.

[0017] Preferably, the gear set includes a large gear and a small gear. The large gear is fixedly connected to the rotating rod and rotatably connected to the moving seat. The small gear is fixedly connected to the rotating roller and rotatably connected to the moving seat. At the same time, the small gear meshes with the large gear.

[0018] Preferably, the conveying component includes a conveying pipe and a sealed bearing. The sealed bearing is fixedly connected to the center of the rotating roller. One end of the conveying pipe communicates with the bottom surface of the storage tank, and the other end is fixedly connected to the inner ring of the sealed bearing. At the same time, one end of the conveying pipe extends into the cavity.

[0019] Preferably, both ends of the curtain wall frame are fixedly connected to limit blocks, and rubber is fixedly connected to the limit blocks, with the movable seat located between the rubber.

[0020] Preferably, both the forward water inlet pipe and the reverse water inlet pipe are provided with external threads.

[0021] Preferably, a sealing ring is fixedly connected to one end of both the forward water inlet pipe and the reverse water inlet pipe.

[0022] Preferably, manual valves are fixedly connected to the side walls of the forward water inlet pipe and the reverse water inlet pipe.

[0023] The advantages of this invention compared with existing technologies are as follows:

[0024] 1. This device utilizes the synergistic effect of hydraulic and rotary drive components to convert the kinetic energy of water into mechanical energy, driving the moving seat to rise and fall along the curtain wall frame. Simultaneously, the lifting motion is converted into the rotational motion of the rotating roller through a gear set, causing the cleaning brush to rotate continuously during the lifting process. This comprehensively removes stains, grime, bird droppings, and other pollutants from the exterior curtain wall surface, avoiding the fall risk associated with traditional manual high-altitude operations and ensuring the safety of operators.

[0025] 2. In addition, the device is equipped with a storage tank and a water supply system to recycle the water discharged during the cleaning process. The water is then fed into the cleaning brush through the water outlet, which enhances the cleaning effect and reduces water waste.

[0026] 3. The combination of the limit block and rubber effectively buffers the impact of the moving seat, preventing it from hitting the storage box and ensuring the stable operation of the device;

[0027] 4. The external threads and sealing rings on the forward and reverse water inlet pipes facilitate connection with external pipes and ensure sealing. The manual valve enables unidirectional control of water flow, making operation more flexible and reliable. Overall, the device does not rely on external power or complex mechanical equipment. It can complete the cleaning task simply through the flow of water and mechanical transmission. It has a simple structure, is easy to maintain, and can operate stably for a long time.

[0028] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention;

[0030] Figure 2 This is a schematic diagram showing the position of the variable speed gear set of the present invention;

[0031] Figure 3 This is a schematic diagram showing the position of the threaded rod in this invention;

[0032] Figure 4 This is a schematic diagram showing the position of the rotating barrel in this invention;

[0033] Figure 5 This is a schematic diagram showing the position of the rotating fan blades of the present invention.

[0034] In the diagram: 1. Curtain wall frame; 2. Inner curtain wall; 3. Outer curtain wall; 4. Movable base; 5. Hydraulic drive component; 6. Rotating roller; 7. Cleaning brush; 8. Rotating drive component; 9. Threaded rod; 10. Rotating bucket; 11. Water outlet; 12. Forward water inlet pipe; 13. Reverse water inlet pipe; 14. Rotating fan blade; 15. Slot; 16. Storage tank; 17. Chamber; 18. Water outlet; 19. Water conveying component; 20. Rack; 21. Rotating rod; 22. Spur gear one; 23. Speed ​​change gear set; 24. Large gear; 25. Small gear; 26. Conveying pipe; 27. Sealed bearing; 28. Limiting block; 29. ​​Rubber; 30. External thread; 31. Sealing ring; 32. Manual valve. Detailed Implementation

[0035] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0036] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0037] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 application 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 application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0039] like Figures 1 to 5A double-layer curtain wall structure includes: a curtain wall frame 1, an inner curtain wall 2 and an outer curtain wall 3 fixedly connected to the curtain wall frame 1.

[0040] The invention also includes, in the double-layer curtain wall structure, a movable base 4, a hydraulic drive component 5, a rotating roller 6, a cleaning brush 7, and a rotating drive component connected together.

[0041] The movable seat 4 is vertically slidably connected to the side wall of the curtain wall frame 1 near the outer curtain wall 3. The movable seat 4 is mainly driven to rise and fall by the hydraulic drive component 5. The hydraulic drive component 5 is set on the side wall of the curtain wall frame 1 located on the outer curtain wall 3 and connected to the movable seat 4. The hydraulic drive component 5 can drive the movable seat 4 to rise and fall. The hydraulic drive component 5 includes a threaded rod 9, a rotating barrel 10, a water outlet 11, a forward water inlet pipe 12, a reverse water inlet pipe 13, and a rotating fan blade 14.

[0042] The rotating drum 10 is fixedly connected to the curtain wall frame 1. The forward water inlet pipe 12 and the reverse water inlet pipe 13 are both connected and fixedly connected to the rotating drum 10, with one end extending outside the curtain wall frame 1. A water pipe from the outside is connected to the forward water inlet pipe 12, allowing water to flow into the rotating drum 10. Once water enters the rotating drum 10, the rotating fan blades 14, which are rotatably connected to the rotating drum 10, drive the rotating fan blades 14 to rotate forward. When the rotating fan blades 14 rotate forward, they drive the fixed connection to the rotating drum 10. The threaded rod 9, which is connected to the rotating barrel 10, rotates. Once the threaded rod 9 is rotating, it will drive the moving seat 4 to move because the threaded rod 9 is threadedly connected to the moving seat 4. Similarly, if the personnel need the threaded rod 9 to rotate in reverse, they can connect the pipe to the reverse water inlet pipe 13 and fill it with water. The water will drive the rotating fan blade 14 to rotate in reverse, thus realizing the rotation of the threaded rod 9. The moving seat 4 can be raised or lowered by rotating the threaded rod 9 in both the forward and reverse directions. In order to smoothly drive the rotating fan blade 14 to rotate, the present invention has a water outlet 11 at one end of the rotating barrel 10 for discharging water.

[0043] Once the movable seat 4 is raised or lowered, the rotating roller 6, which is rotatably connected to the movable seat 4, and the cleaning brush 7, which is fixedly connected to the rotating roller 6, will drive the rotating roller 6 and the cleaning brush 7 to rise or fall when the movable seat 4 is raised or lowered. In order to better enable the cleaning brush 7 to clean the external curtain wall 3, the present invention provides a rotating drive component 8 on the curtain wall frame 1. The rotating drive component 8 uses the raising or lowering of the movable seat 4 to convert the rotational force of the rotating roller 6, so that the cleaning brush can both rise and fall and rotate during the raising or lowering process to clean the external curtain wall 3. The driving structure of the rotating drive component 8 includes a rack 20 fixedly connected to the curtain wall frame 1, a rotating rod 21 rotatably connected to the movable seat 4, a spur gear 22 fixedly connected to the rotating rod, and a speed-changing gear set 23 set on the movable seat 4. The speed-changing gear set 23 is connected to the rotating roller 6 and the rotating rod 21. The spur gear 22 meshes with the rack 20. The movement of the movable seat 4 drives the spur gear 22 to move. Once the spur gear 22 moves, the speed-changing gear 22 moves. 2. Movement: Since the spur gear 22 meshes with the rack 20, the spur gear 22 rotates during movement, driving the rotating rod 21 to rotate. Once the rotating rod 21 rotates, it drives the gear set 23 to rotate, thereby driving the rotating roller 6 to drive the cleaning roller to rotate and clean the outer curtain wall 3. It is worth mentioning that the gear set 23 in this invention includes a large gear 24 and a small gear 25. The large gear 24 is fixedly connected to the rotating rod 21 and rotatably connected to the moving seat 4. The small gear 25 is fixedly connected to the rotating roller 6 and rotatably connected to the moving seat 4. At the same time, the small gear 25 meshes with the large gear 24. Therefore, during the rotation of the rotating rod, it will inevitably drive the large gear 24 to drive the small gear 25 to rotate. Thus, during the rotation of the small gear 25, the rotating roller 6 will rotate, thereby achieving the cleaning of the outer curtain wall 3 by the rotating roller 6. By setting the cleaning mechanism externally, there is no need for personnel to work at height, thus avoiding the risks of personnel working at height.

[0044] Specifically, the curtain wall frame 1 has a storage box 16 with a top slot 15 fixedly connected to it. The rotating drive 8, rotating roller 6, and moving base 4 are all located below the storage box 16. The water outlet 11 is connected to the water outlet 11 in the rotating tank 10 away from the forward water inlet pipe 12 and the reverse water inlet pipe 13. The rotating roller 6 has a chamber 17, and the rotating roller 6 has a water outlet 18 that communicates with the chamber 17. The water outlet 18 is located in the cleaning brush 7. The storage box 16 is equipped with a water conveying component 19, one end of which communicates with the chamber 17. The conveying component includes a conveying pipe 26 and a sealed bearing 27. The bearing 27 is fixedly connected to the center of the rotating roller 6. One end of the conveying pipe 26 is connected to the bottom surface of the storage tank 16, and the other end is fixedly connected to the inner ring of the sealed bearing 27. At the same time, one end of the conveying pipe 26 extends into the chamber 17. When water is discharged through the outlet 11, the water will enter the storage tank 16 through the outlet 11. The storage tank 16 stores the water. After the water is stored, the water enters the chamber 17 through the conveying pipe 26 from the storage tank 16. The water enters the cleaning brush through the chamber 17, so that the cleaning brush can clean the outer curtain wall 3 and further improve the cleanliness of the outer curtain wall 3.

[0045] Specifically, both ends of the curtain wall frame 1 are fixedly connected to limit blocks 28, and rubber 29 is fixedly connected to the limit blocks 28. The movable seat 4 is located between the rubber 29. The rubber 29 is used to buffer the movable seat 4 and reduce the impact of the movable seat 4 on the storage box 16.

[0046] Specifically, both the forward water inlet pipe 12 and the reverse water inlet pipe 13 are provided with external threads 30, and a sealing ring 31 is fixedly connected to one end of both the forward water inlet pipe 12 and the reverse water inlet pipe 13. The external threads 30 facilitate the connection between the forward water inlet pipe 12 and the reverse water inlet pipe 13 and the outside world. By having the sealing ring 31 adhere to the external pipe, the sealing degree between the forward water inlet pipe 12 and the reverse water inlet pipe 13 and the outside world can be increased.

[0047] Specifically, manual valves 32 are fixedly connected to the side walls of the forward water inlet pipe 12 and the reverse water inlet pipe 13. When the forward water inlet pipe 12 needs to be filled with water, the personnel can close the manual valve 32 in the reverse water inlet pipe 13 to seal it. When the reverse water inlet pipe 13 needs to be filled with water, the manual valve 32 on the forward water inlet pipe 12 can be closed to achieve the closure of the forward water inlet pipe 12.

[0048] The working principle of this invention is as follows: When water is introduced through an external water pipe connected to the forward water inlet pipe 12, the water flow drives the rotating fan blade 14 to rotate in the forward direction, causing the threaded rod 9 to rotate. Since the threaded rod 9 is threadedly connected to the movable seat 4, the movable seat 4 rises accordingly. If it is necessary to lower the seat, the water pipe is connected to the reverse water inlet pipe 13, the water flow drives the rotating fan blade 14 to rotate in the reverse direction, drives the threaded rod 9 to rotate in the reverse direction, and the movable seat 4 descends. An outlet 11 is provided at one end of the rotating tank 10 for discharging water.

[0049] When the movable seat 4 is raised or lowered, the rotating roller 6 and cleaning brush 7 on it are raised and lowered synchronously. To improve the cleaning effect, a rotary drive is provided on the curtain wall frame 1 to convert the raising and lowering of the movable seat 4 into the rotational force of the rotating roller 6. The drive includes a rack 20 fixed to the curtain wall frame 1, a rotating rod 21 rotatably connected to the movable seat 4, a spur gear 22 fixed to the rotating rod 21, and a gear set 23 on the movable seat 4. The spur gear 22 meshes with the rack 20. When the movable seat 4 is raised or lowered, the spur gear 22 moves and rotates along the rack 20, driving the rotating rod 21 to rotate. The gear set 23 consists of a large gear 24 and a small gear 25. The large gear 24 is fixed to the rotating rod 21, and the small gear 25 is fixed to the rotating roller 6 and the two mesh. The rotation of the rotating rod 21 drives the rotating roller 6 to rotate through the gear set 23, so that the cleaning brush 7 rotates continuously during the raising and lowering process, achieving comprehensive cleaning of the external curtain wall 3. This design avoids the risk of personnel working at height.

[0050] The curtain wall frame 1 is also equipped with a storage tank 16, with a slot 15 on its top. The rotating drive 8, rotating roller 6, and movable seat 4 are located below it. The water outlet 11 communicates with the rotating drum 10. The rotating roller 6 has a chamber 17, which communicates with the cleaning brush 7 through a water outlet 18. The storage tank 16 is equipped with a water conveying component 19, including a conveying pipe 26 and a sealed bearing 27. The sealed bearing 27 is fixed to the center of the rotating roller 6. One end of the conveying pipe 26 communicates with the bottom surface of the storage tank 16, and the other end is fixed to the inner ring of the sealed bearing 27 and extends into the chamber 17. Water flows into the storage tank 16 through the water outlet 11, then flows into the chamber 17 through the conveying pipe 26, and enters the cleaning brush 7 through the water outlet 18, enhancing the cleaning effect. The curtain wall frame 1 has limit blocks 28 at both ends, with rubber 29 fixed on the limit blocks 28 to buffer the movable seat 4 and reduce impact. Both the forward inlet pipe 12 and the reverse inlet pipe 13 are equipped with external threads 30 and sealing rings 31 to facilitate connection with external pipes and ensure a seal. The manual valve 32 is located on the side wall of the inlet pipe. Water enters the forward inlet pipe 12 by closing the manual valve 32 of the reverse inlet pipe 13, and vice versa, to ensure unidirectional control of water flow.

[0051] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A double-layer curtain wall structure, comprising: A curtain wall frame (1), an inner curtain wall (2), and an outer curtain wall (3) fixedly connected to the curtain wall frame (1), characterized in that, The curtain wall frame (1) has a movable seat (4) that is vertically slidably connected to the side wall near the outer curtain wall (3); A hydraulic drive component (5) is provided on the curtain wall frame (1). One end of the hydraulic drive component (5) is connected to the movable seat (4), and the other end passes through the curtain wall frame (1). A rotating roller (6) is rotatably connected to the movable seat (4), and a cleaning brush (7) is fixedly connected to the rotating roller (6); The curtain wall frame (1) is provided with a rotating drive component (8), one end of which is connected to the rotating roller (6) and can drive the rotating roller (6) to rotate. The hydraulic drive component (5) includes: a threaded rod (9), a rotating bucket (10), a water outlet (11), a forward water inlet pipe (12), a reverse water inlet pipe (13), and a rotating fan blade (14); The rotating barrel (10) is fixedly connected to the curtain wall frame (1), the threaded rod (9) is rotatably connected to the rotating barrel (10), the rotating fan blade (14) is rotatably connected to the rotating barrel (10), and the rotating fan blade (14) is fixedly connected to the threaded rod (9). One end of the forward water inlet pipe (12) is connected to the rotating barrel (10) and is positioned opposite to the rotating fan blade (14). The reverse water inlet pipe (13) is connected to the rotating barrel (10) and is positioned opposite to the rotating fan blade (14). Both ends of the forward water inlet pipe (12) and the reverse water inlet pipe (13) extend to the outside of one side of the curtain wall frame (1). The water outlet (11) is located at one end of the rotating barrel (10).

2. The double-layer curtain wall structure according to claim 1, characterized in that, A storage box (16) with a top slot (15) is fixedly connected to the curtain wall frame (1). The rotating drive (8), rotating roller (6) and moving seat (4) are all located below the storage box (16). The water outlet (11) is connected to the water outlet (11) in the rotating bucket (10) away from the forward water inlet pipe (12) and the reverse water inlet pipe (13). A chamber (17) is opened in the rotating roller (6). A water outlet (18) is opened on the rotating roller (6) and communicates with the chamber (17). The water outlet (18) is located in the cleaning brush (7). A water conveying component (19) is provided in the storage box (16). One end of the water conveying component (19) communicates with the chamber (17).

3. A double-layer curtain wall structure according to claim 2, characterized in that, The rotating drive component (8) includes a rack (20) fixedly connected to the curtain wall frame (1), a rotating rod (21) rotatably connected to the movable seat (4), a spur gear (22) fixedly connected to the rotating rod, and a speed-changing gear set (23) set on the movable seat (4). The speed-changing gear set (23) is connected to the rotating roller (6) and the rotating rod (21), and the spur gear (22) meshes with the rack (20).

4. A double-layer curtain wall structure according to claim 3, characterized in that, The gear set (23) includes a large gear (24) and a small gear (25). The large gear (24) is fixedly connected to the rotating rod (21) and rotatably connected to the moving seat (4). The small gear (25) is fixedly connected to the rotating roller (6) and rotatably connected to the moving seat (4). At the same time, the small gear (25) meshes with the large gear (24).

5. A double-layer curtain wall structure according to claim 2, characterized in that, The water conveying component includes a conveying pipe (26) and a sealed bearing (27). The sealed bearing (27) is fixedly connected to the center of the rotating roller (6). One end of the conveying pipe (26) is connected to the bottom surface of the storage tank (16), and the other end is fixedly connected to the inner ring of the sealed bearing (27). At the same time, one end of the conveying pipe (26) extends into the chamber (17).

6. A double-layer curtain wall structure according to claim 1, characterized in that, Both ends of the curtain wall frame (1) are fixedly connected to limit blocks (28), and rubber (29) is fixedly connected to the limit blocks (28). The movable seat (4) is located between the rubber (29).

7. A double-layer curtain wall structure according to claim 2, characterized in that, Both the forward water inlet pipe (12) and the reverse water inlet pipe (13) are provided with external threads (30).

8. A double-layer curtain wall structure according to claim 7, characterized in that, A sealing ring (31) is fixedly connected to one end of both the forward water inlet pipe (12) and the reverse water inlet pipe (13).

9. A double-layer curtain wall structure according to claim 2, characterized in that, Manual valves (32) are fixedly connected to the side walls of the forward water inlet pipe (12) and the reverse water inlet pipe (13).

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