Multi-sealed stepped drainage structure of building skylight

Abstract

The invention relates to the technical field of skylights, and discloses a building skylight multi-seal stepped drainage structure which comprises a bottom frame and further comprises two mounting frames rotationally connected to the top end of the bottom frame, glass sheets arranged in the mounting frames and two guide inclined plates located on the left side and the right side of the bottom frame correspondingly. The connecting frame is connected into the mounting frame in a sliding mode, one end of the rocker is rotationally connected with the connecting frame, the disc is rotationally connected to the other end of the rocker, the soft brush strip is attached to the glass sheet, and when the mounting frame rotates, the soft brush strip treats the surface of the glass sheet through the disc. In the opening and closing process of the skylight, the disc moves under the action of gravity and extrusion of the pressing strip to drive the connecting frame and the soft brush strip to conduct two-way cleaning on the surface of the glass sheet, the manual maintenance cost and the high-altitude operation risk are reduced, accumulated water and pollutants are prevented from being mixed to corrode skylight materials, the surface of the glass sheet is effectively and rapidly treated, and the service life is prolonged. The drainage efficiency and the service life of the skylight are improved.

Description

Technical Field

[0001] The invention relates to the technical field of skylights, and in particular to a multi-sealed stepped drainage structure of a building skylight. Background Art

[0002] In the field of industrial buildings, skylights on the top of the factory are important facilities that take into account both lighting and smoke exhaust. They can also realize indoor and outdoor air exchange, improve indoor air quality, and maintain indoor temperature within a suitable range.

[0003] However, existing technologies often involve heavy industrial production activities around many factories, such as steel smelting and cement manufacturing, which generate large amounts of fine dust during the production process. This dust, carried by the wind, easily adheres to the skylight surface, forming stubborn stains that not only reduce light transmittance but also shorten the skylight's service life. Furthermore, while skylights are often constructed of smooth tempered glass or PC panels, these materials, while transparent and sleek, experience rapid rainwater flow across them, making them unable to effectively soak and dissolve pollutants. Instead, they evenly spread dust and other pollutants, creating large water streaks. Furthermore, the flat surface of most skylight glass results in a lack of drainage guides, preventing rainwater from quickly flowing to the gutter. The accumulated water reacts chemically with sulfides and nitrogen oxides in industrial dust, forming acidic liquids that severely damage the glass coating and the UV-resistant coating on the PC boards. Once the water evaporates, it leaves difficult-to-remove water marks on the skylight surface. Furthermore, the flat glass surface of existing skylights makes it easy for rainwater to adhere to the surface. This water mixes with airborne pollutants, forming a corrosive liquid that not only erodes the skylight material but also leaves mottled stains on the surface. These water marks and stains further reduce the skylight's light transmittance, affecting the uniformity of light within the factory. Furthermore, long-term accumulation of water can cause moisture and rust on the mechanical components that open and close the skylight, increasing the risk of the skylight jamming and seriously affecting the proper functioning of the smoke exhaust system. The high location of the skylights presents significant operational risks, requiring workers to utilize aerial work equipment for routine maintenance. Furthermore, due to their large area, complex structure, and large number, comprehensive cleaning is difficult and time-consuming, requiring significant labor and effort. Maintenance is typically performed every two months, making it difficult to effectively treat the skylight surface. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-sealed stepped drainage structure for a building skylight, so as to solve the problem that the skylight cannot be maintained in time.

[0005] The technical solution of the present invention is: a multi-sealed stepped drainage structure for a building skylight, comprising a base frame, two mounting frames rotatably connected to the top of the base frame, a glass sheet arranged inside the mounting frame, two guide inclined plates respectively located on the left and right sides of the base frame, a connecting frame slidably connected to the inside of the mounting frame, a soft brush strip fixedly connected to the connecting frame, a rocker rotatably connected to the connecting frame at one end, a disc rotatably connected to the other end of the rocker, a telescopic rod connected between the mounting frame and the base frame, and a filter fixedly arranged at the bottom of the base frame, an oblique air outlet is provided on the top of the base frame, the mounting frame is mirror-symmetrical about the central axis of the base frame, the soft brush strip is in contact with the glass sheet, and when the mounting frame rotates, the soft brush strip processes the surface of the glass sheet through the disc.

[0006] Furthermore, a sealing plate is provided on one side of the mounting frame, a pressure strip is provided inside the sealing plate, both ends of the pressure strip are arranged in an arc shape, a guide slot and a straight slot are provided on the mounting frame, the guide slot is parallel to the pressure strip, the guide slot is perpendicular to the straight slot, and one end of the connecting frame passes through the guide slot.

[0007] Furthermore, the top end of the guide inclined plate is a sliding surface, the sliding surface is equal to the length of the pressure strip, the diameter of the disc is not less than one quarter of the length of the sliding surface, and the surfaces of the sliding surface and the pressure strip are smoothed.

[0008] Furthermore, the connecting frame includes a straight frame slidably connected to the inside of the mounting frame, a circular shaft fixedly connected to one side of the straight frame, and a half-slot sleeve fixedly sleeved on the outside of the circular shaft. The circular shaft passes through the guide slot, and one end of the rocker is rotatably connected to the outside of the circular shaft.

[0009] Furthermore, a convex strip is provided on one side of the rocker close to the half-slot sleeve, and the convex strip is located in the slot of the half-slot sleeve. The slot angle of the half-slot sleeve is the same as the rotation angle of the mounting bracket.

[0010] Furthermore, a straight plate is provided inside the mounting frame, the surface of the straight plate is subjected to high friction treatment and the top is arranged in an arc shape.

[0011] Furthermore, a plurality of semicircular strips are equidistantly arranged on the glass sheet, and a water guide surface is formed between the left and right sides of the semicircular strips and the mounting frame.

[0012] Furthermore, when the mounting frame closes the oblique air outlet, the connecting frame is located inside the straight slot.

[0013] Furthermore, the two guide inclined plates are respectively located at locations where the mounting frame is provided with sealing plates. When the mounting frame is vertical, the disc is tangent to the guide inclined plates and the guide notches.

[0014] Furthermore, the sliding surface and the oblique air outlet have the same inclination angle, and when the oblique air outlet is closed by the mounting frame, the pressure strip fits the sliding surface.

[0015] Beneficial effects of the present invention: 1. During the opening and closing process of the skylight, the disc moves back and forth under the action of gravity and the squeezing of the pressure strip, driving the connecting frame and the soft brush strip to clean the glass surface in two directions. The semi-circular strips of the glass assist the brush strips in fitting the surface and guide the dirt to the water guide surface. Compared with the traditional manual cleaning method of the skylight, it can improve the cleaning efficiency, reduce the labor maintenance cost and the risk of high-altitude operation, avoid the corrosion of the skylight material by the mixture of accumulated water and pollutants, effectively and quickly treat the surface of the glass, and improve the drainage efficiency and service life of the skylight.

[0016] 2. The mounting bracket is rotated by controlling the telescopic rod, so that the disc drives the soft brush strip using the rocker, integrating cleaning, ventilation, drainage and other functions into the same control. The skylight can be opened, closed and automatically cleaned by simply extending and retracting the single telescopic rod as a drive, without the need to control multiple independent components separately. This greatly simplifies the control process and significantly improves ease of use.

[0017] 3. The pressure strip is used as a pushing structure, and the connecting frame is used as a single transmission structure. At the same time, it reciprocates in a straight line to avoid complex moving paths and reduce the coordination between structures, thereby reducing the difficulty of installation and shortening the installation time. In addition, the soft brush strips, filter screens and other vulnerable parts can be quickly replaced without professional tools and complex operations, which improves maintenance efficiency, reduces maintenance costs, and enhances the long-term availability and adaptability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of the present invention from a first viewing angle; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a structural schematic diagram of the mounting frame of the present invention; Figure 4 This is a structural diagram of the connecting frame of the present invention; Figure 5 It is a structural schematic diagram of the disc of the present invention; Figure 6 Schematic diagram of the structure of the glass sheet of the present invention; Figure 7 For the present invention Figure 1 A magnified schematic diagram of point A in the middle; Figure 8 It is a front view of the chassis of the present invention.

[0019] In the picture: 1. Base frame; 101. Oblique air vent; 2. Mounting frame; 21. Closing plate; 22. Pressure strip; 23. Guide slot; 24. Straight slot; 25. Straight plate; 3. Glass sheet; 31. Semicircular strip; 32. Water guide surface; 4. Guide inclined plate; 41. Sliding surface; 5. Connecting frame; 51. Straight frame; 52. Round shaft; 53. Half-slot sleeve; 6. Soft brush strip; 7. Rocker; 71. Raised strip; 8. Disc; 9. Telescopic rod; 10. Filter. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] Reference Figures 1-8 , as an embodiment of the present invention, a multi-sealed stepped drainage structure for a building skylight is provided, comprising a base frame 1, two mounting frames 2 rotatably connected to the top of the base frame 1, a glass sheet 3 arranged inside the mounting frame 2, two guide inclined plates 4 respectively located on the left and right sides of the base frame 1, a connecting frame 5 slidably connected to the inside of the mounting frame 2, a soft brush strip 6 fixedly connected to the connecting frame 5, a rocker 7 rotatably connected to the connecting frame 5 at one end, a disc 8 rotatably connected to the other end of the rocker 7, a telescopic rod 9 connected between the mounting frame 2 and the base frame 1, and a filter screen 10 fixedly arranged at the bottom of the base frame 1, an oblique air outlet 101 is opened on the top of the base frame 1, the mounting frame 2 is mirror-symmetrical about the central axis of the base frame 1, the soft brush strip 6 is in contact with the glass sheet 3, and when the mounting frame 2 rotates, the soft brush strip 6 processes the surface of the glass sheet 3 through the disc 8.

[0022] Specifically, the mounting frame 2 provides a stable installation for the glass pieces 3, and uses two glass pieces 3 as the light-transmitting main body to ensure that sufficient natural light enters the factory area. The mounting frame 2 can use the extension and retraction of the telescopic rod 9 to rotate with the base frame 1 as the support, and can control the opening and closing of the oblique air vents 101. When the mounting frame 2 rotates, the disc 8 moves downward due to gravity, causing the connecting frame 5 to slide linearly in the mounting frame 2, and then the soft brush strip 6 fixedly connected to the connecting frame 5 moves close to the surface of the glass piece 3, effectively and timely dealing with stains such as dust and water marks on the surface of the glass piece 3.

[0023] Reference Figure 1-Figure 3 A sealing plate 21 is provided on one side of the mounting frame 2, and a pressure strip 22 is provided inside the sealing plate 21. Both ends of the pressure strip 22 are set to be arc-shaped. A guide slot 23 and a straight slot 24 are provided on the mounting frame 2. The guide slot 23 is parallel to the pressure strip 22, and the guide slot 23 is perpendicular to the straight slot 24. One end of the connecting frame 5 passes through the guide slot 23. The connecting frame 5 is guided by the guide slot 23 and can only move along the path of the guide slot 23.

[0024] Specifically, since the two mounting frames 2 are mirror-symmetrical on the left and right, two sealing plates 21 are provided on the two mounting frames 2. The positions of the sealing plates 21 are respectively located on different sides of the two mounting frames 2, that is, one sealing plate 21 is on the left side of one of the mounting frames 2, and the other sealing plate 21 is on the right side of the other mounting frame 2. The inner walls of the guide slots 23 and the straight slots 24 are ground to reduce their surface roughness, thereby ensuring smooth sliding of the connecting frame 5.

[0025] Reference Figure 1-Figure 7 The top of the guide inclined plate 4 is a sliding surface 41. The length of the sliding surface 41 is equal to that of the pressure strip 22. The diameter of the disc 8 is not less than one-quarter of the length of the sliding surface 41. The surfaces of the sliding surface 41 and the pressure strip 22 are smoothed. The inclination angle of the sliding surface 41 and the inclined air outlet 101 are the same, and the inclination angle of the two can be ten degrees. Then, when the mounting frame 2 is vertical, the angle between the mounting frame 2 and the inclined air outlet 101 is eighty degrees. When the mounting frame 2 closes the inclined air outlet 101, the pressure strip 22 fits with the sliding surface 41 to form a seal. At the same time, the sealing plate 21 can directly seal the pressure strip 22 and the sliding surface 41, reducing the influence of the external environment on the surfaces of the two.

[0026] Specifically, the guide ramp 4 and the disc 8 are made of stainless steel to ensure their smooth surface, and the pressure strip 22 is also made of hard material. The rotating extrusion effect of the pressure strip 22 is used to make the disc 8 move back smoothly along the guide track of the sliding surface 41. At this time, the rocker 7 will drive the connecting frame 5 to move linearly in the guide groove 23, thereby making the soft brush strip 6 move back close to the surface of the glass sheet 3.

[0027] In addition, during routine maintenance, it is usually necessary to synchronously maintain the pressure strip 22, the sliding surface 41, and the disc 8 to ensure the smoothness of the surface. This equipment is usually used after rain, and rainwater can impact the surface of the disc 8 to ensure the smoothness of the disc 8 and avoid jamming. At the same time, it can ventilate after rain and effectively deal with water marks after rain.

[0028] Among them, when the disc 8 is located between the sliding surface 41 and the pressure strip 22, the sliding surface 41 and the pressure strip 22 cannot fit together, and the oblique air outlet 101 cannot be closed. The diameter of the disc 8 is not less than one-quarter of the length of the sliding surface 41. At the same time, there is a V-shaped angle between the pressure strip 22 and the sliding surface 41. At this time, if the length of the sliding surface 41 is forty, the diameter of the disc 8 is at least ten. Since the maximum angle of the V-shaped angle is eighty degrees, and the diameter of the disc 8 is always smaller than the opening width of the V-shaped angle, it will always keep moving under pressure. At the same time, when the disc 8 is at the bottom of the angle, since the diameter of the disc 8 is at least ten, no effective clamping force can be formed between the sliding surface 41 and the pressure strip 22, and the distance the disc 8 moves after being compressed is greater than the length of the sliding surface 41, ensuring that there is sufficient clearance for the disc 8 to slide in the inclined direction of the sliding surface 41, thereby avoiding interference caused by the disc 8 being too small and causing it to get stuck.

[0029] Reference Figure 2-Figure 5 The connecting frame 5 includes a straight frame 51 slidably connected to the inside of the mounting frame 2, a round shaft 52 fixedly connected to one side of the straight frame 51, and a half-slot sleeve 53 fixedly sleeved on the outside of the round shaft 52. The round shaft 52 passes through the guide slot 23, and one end of the rocker 7 is rotatably connected to the outside of the round shaft 52.

[0030] Specifically, the straight frame 51, the circular shaft 52 and the half-groove sleeve 53 are all made of aluminum alloy. The half-groove sleeve 53 is milled by CNC milling, and the circular shaft 52 and the straight frame 51 are fixed by welding. At the same time, the surface of the straight frame 51 is anodized to effectively resist acid and alkali corrosion in the industrial environment. The interior of the straight frame 51 is hollowed out and adopts a reinforcing rib structure. While ensuring its own rigidity, it reduces the overall weight and ensures that it is not easy to deform during the reciprocating sliding process. At the same time, the other side of the guide slot 23 of the mounting frame 2 is also provided with a guide slot, so that the straight frame 51 is subject to dual guidance to ensure stability. The straight frame 51 can achieve low resistance and high The disc 8 has a solid structure and moves downward under the pull of gravity. The rocker 7 pulls the circular shaft 52 under the action of the disc 8, so that the straight frame 51 drives the soft brush strip 6 to move. Similarly, when the disc 8 moves back along the sliding surface 41 of the guide inclined plate 4 under the pressure of the pressure strip 22, the force is transmitted to the circular shaft 52 through the rocker 7, and the circular shaft 52 drives the straight frame 51 to make a linear reciprocating motion in the guide groove 23. At this time, the half-groove sleeve 53 moves synchronously with the circular shaft 52, and the linear motion of the straight frame 51 drives the soft brush strip 6 fixed thereto to perform back and forth cleaning on the surface of the glass sheet 3, thereby achieving efficient cleaning of the skylight surface.

[0031] Reference Figure 2-Figure 6A ridge 71 is provided on the side of the rocker 7 close to the half-slot sleeve 53. The ridge 71 is located in the groove of the half-slot sleeve 53. The notch angle of the half-slot sleeve 53 is the same as the rotation angle of the mounting frame 2. The half-slot sleeve 53 is used to limit the ridge 71, so that the rocker 7 can limit the disc 8 to prevent the disc 8 from excessive rotation deviation.

[0032] Reference Figure 2-Figure 6 A straight plate 25 is provided inside the mounting frame 2. The surface of the straight plate 25 is subjected to high friction treatment and the top is set to an arc shape. When the mounting frame 2 closes the oblique air outlet 101, the connecting frame 5 is located inside the straight slot 24.

[0033] Specifically, when the soft brush strip 6 contacts the straight plate 25 , it will be deformed by the pressure of the straight plate 25 , thereby removing moisture from the inside of the soft brush strip 6 , while utilizing the friction of the straight plate 25 to remove impurities on the surface of the soft brush strip 6 .

[0034] Reference Figure 1-Figure 7 There are multiple semicircular strips 31 equidistantly arranged on the glass sheet 3, forming a multi-step structure, which makes it difficult for rainwater to stay on the surface of the glass sheet 3. At the same time, water guide surfaces 32 are formed between the left and right sides of the semicircular strips 31 and the mounting frame 2, and the height of the water guide surface 32 is lower than the semicircular strips 31.

[0035] Among them, the soft brush strip 6 is made of a mixed material to ensure the softness of the main part, and can be deformed when it comes into contact with the semicircular strip 31. It can effectively remove stubborn stains on the glass surface without scratching the glass. At the same time, the soft brush strip 6 can better fit the surface of the glass sheet 3, thereby improving the surface cleaning effect.

[0036] Specifically, multiple semicircular strips 31 can form a step height difference, guiding rainwater to slide down quickly without excessively affecting the overall light transmittance of the glass sheet 3, greatly reducing the adhesion of rainwater, making rainwater roll down quickly under the action of gravity, and needing to cooperate with the water guide surface 32, so that rainwater is difficult to stay and accumulate on the surface of the glass sheet 3. When rainwater falls on the surface of the glass sheet 3, it will preferentially flow quickly to both sides along the curved slope of the semicircular strips 31, converge to the water guide surface 32, and form a continuous diversion path with the sliding surface 41 of the guide inclined plate 4. Rainwater flows on the water guide surface 32. When cleaning, the water will be quickly discharged from the skylight along the inclination angle of the guide ramp 4 to avoid the formation of water accumulation. At the same time, the soft brush strip 6 slides along the surface of the glass sheet 3 under the drive of the connecting frame 5. The arc shape of the semicircular strip 31 can help the brush strip to cover the glass surface more comprehensively, effectively removing stains attached to the grooves and slopes. At the same time, the mechanical force generated when the brush strip contacts the semicircular strip 31 removes the dirt. In addition, the multi-step structure formed by the semicircular strip 31 can also disperse the impact of wind on the glass sheet 3 to a certain extent, thereby improving the overall wind pressure resistance of the skylight.

[0037] Reference Figures 1-8The two guide inclined plates 4 are respectively located at the locations where the mounting frame 2 is provided with the sealing plates 21 to ensure that the corresponding disc 8 can be guided by the guide inclined plates 4. When the mounting frame 2 is vertical, the disc 8 is tangent to the guide inclined plates 4 and the guide notches 23.

[0038] The working principle of the present invention is as follows: when the skylight is in the initial closed state, the two mounting frames 2 are symmetrically centered on the central axis of the base frame 1, and cooperate with each other to completely close the corresponding oblique air vents 101. At this time, the pressure strip 22 inside the sealing plate 21 on one side of the mounting frame 2 is tightly fitted with the sliding surface 41 at the top of the guide inclined plate 4, forming multiple sealing lines to effectively prevent rainwater leakage and external pollutants from entering. When the skylight is opened, the telescopic rod 9 starts to extend, and the base frame 1 is used as a support to push the two mounting frames 2 to rotate synchronously. As the mounting frames 2 rotate, The oblique air vent 101 is gradually opened. During this process, the mounting frame 2 rotates, and the disc 8 moves downward due to its own gravity. When the disc 8 slides, the rocker 7 pulls the straight frame 51 connected to the circular shaft 52, so that the circular shaft 52 slides linearly under the constraint of the guide groove 23. Since the soft brush strip 6 is fixedly connected to the connecting frame 5, the soft brush strip 6 moves closely against the surface of the glass sheet 3 to clean the dust, water marks and other stains on the glass sheet 3 after rain. At the same time, the multi-step structure formed by the semicircular strips 31 on the surface of the glass sheet 3 assists the soft brush strip 6 to move smoothly. The flexible brush strip 6 better fits the glass surface and guides the dirt generated during the cleaning process to the water guide surface 32. At the same time, the soft brush strip 6 uses the high friction surface of the straight plate 25 to squeeze the soft brush strip 6 passing by, removing the moisture inside the brush strip and surface impurities. After the skylight is opened for dozens of minutes and needs to be closed again, the telescopic rod 9 contracts and drives the mounting frame 2 to rotate in the opposite direction. During the process of the mounting frame 2 rotating back, the disc 8 is at the bottom of the angle, and the pressure strip 22 gradually approaches the sliding surface 41 as the mounting frame 2 rotates, and The disc 8 on the sliding surface 41 generates an extrusion force. Since the pressure strip 22 is inclined to the sliding surface 41, during the extrusion process, the disc 8 moves back along the sliding surface 41, and at the same time drives the circular shaft 52 to move linearly in the guide groove 23 in the opposite direction through the rocker 7. The soft brush strip 6 performs a secondary treatment on the surface of the glass sheet 3 again to absorb rainwater on the surface of the glass sheet 3. When the mounting frame 2 is fully returned to its original position and the oblique air outlet 101 is closed, the pressure strip 22 and the sliding surface 41 are tightly fitted together again to form a seal, which can effectively reduce water marks and dirt.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A multi-sealed stepped drainage structure for a building skylight, comprising a base frame (1), characterized in that: The invention also includes two mounting frames (2) rotatably connected to the top of the base frame (1), a glass sheet (3) arranged inside the mounting frame (2), two guide inclined plates (4) respectively located on the left and right sides of the base frame (1), a connecting frame (5) slidably connected to the inside of the mounting frame (2), a soft brush strip (6) fixedly connected to the connecting frame (5), a rocker (7) rotatably connected to the connecting frame (5) at one end, a disc (8) rotatably connected to the other end of the rocker (7), a telescopic rod (9) connected between the mounting frame (2) and the base frame (1), and a filter (10) fixedly arranged at the bottom of the base frame (1), an oblique air outlet (101) is opened at the top of the base frame (1), the mounting frame (2) is mirror-symmetrical about the central axis of the base frame (1), the soft brush strip (6) is in contact with the glass sheet (3), and when the mounting frame (2) rotates, the soft brush strip (6) processes the surface of the glass sheet (3) through the disc (8).

2. The multi-sealed stepped drainage structure for building skylights according to claim 1, characterized in that: A sealing plate (21) is provided on one side of the mounting frame (2), a pressure strip (22) is provided inside the sealing plate (21), both ends of the pressure strip (22) are arranged in an arc shape, a guide slot (23) and a straight slot (24) are provided on the mounting frame (2), the guide slot (23) is parallel to the pressure strip (22), the guide slot (23) is perpendicular to the straight slot (24), and one end of the connecting frame (5) passes through the guide slot (23).

3. The multi-sealed stepped drainage structure for building skylights according to claim 2, characterized in that: The top end of the guide inclined plate (4) is a sliding surface (41), the sliding surface (41) is equal to the length of the pressure strip (22), the diameter of the disc (8) is not less than one-quarter of the length of the sliding surface (41), and the surfaces of the sliding surface (41) and the pressure strip (22) are smoothed.

4. The multi-sealed stepped drainage structure for building skylights according to claim 2, characterized in that: The connecting frame (5) includes a straight frame (51) slidably connected to the inside of the mounting frame (2), a circular shaft (52) fixedly connected to one side of the straight frame (51), and a half-slot sleeve (53) fixedly sleeved on the outside of the circular shaft (52), the circular shaft (52) passes through the guide slot (23), and one end of the rocker (7) is rotatably connected to the outside of the circular shaft (52).

5. The multi-sealed stepped drainage structure for building skylights according to claim 4, characterized in that: A convex strip (71) is provided on one side of the rocker (7) close to the half-slot sleeve (53), and the convex strip (71) is located in the slot of the half-slot sleeve (53). The slot angle of the half-slot sleeve (53) is the same as the rotation angle of the mounting frame (2).

6. The multi-sealed stepped drainage structure for building skylights according to claim 2, characterized in that: A straight plate (25) is provided inside the mounting frame (2), the surface of the straight plate (25) is subjected to high friction treatment and the top is arranged in an arc shape.

7. The multi-sealed stepped drainage structure for building skylights according to claim 1, characterized in that: A plurality of semicircular strips (31) are equidistantly arranged on the glass sheet (3), and a water guide surface (32) is formed between the left and right sides of the semicircular strips (31) and the mounting frame (2).

8. The multi-sealed stepped drainage structure for building skylights according to claim 6, characterized in that: When the mounting frame (2) closes the oblique air outlet (101), the connecting frame (5) is located inside the straight slot (24).

9. The multi-sealed stepped drainage structure for building skylights according to claim 2, characterized in that: The two guide inclined plates (4) are respectively located at locations where the mounting frame (2) is provided with a sealing plate (21). When the mounting frame (2) is vertical, the disc (8) is tangent to the guide inclined plates (4) and the guide notches (23).

10. The multi-sealed stepped drainage structure for building skylights according to claim 3, characterized in that: The sliding surface (41) and the oblique air outlet (101) have the same inclination angle, and when the mounting frame (2) closes the oblique air outlet (101), the pressure strip (22) fits the sliding surface (41).

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