A prefabricated exterior wall opening sealing and waterproofing structure and its application method

Abstract

This invention relates to the field of prefabricated building technology, and more particularly to a prefabricated exterior wall opening sealing and waterproofing structure and its application method. The structure includes: a prefabricated exterior wall with a mounting cavity on its surface; two symmetrically arranged slots on both sides of the inner wall of the mounting cavity; inclined blocks fixedly connected to both sides of the inner cavity of each slot; a sealing structure within the mounting cavity; the sealing structure including a sealing plate located within the mounting cavity; a bidirectional threaded rod rotatably connected to the center of the inner cavity of the sealing plate; and a bevel gear fixedly connected to the surface of the bidirectional threaded rod. This invention offers advantages in improving sealing and waterproofing performance. Through the designed sealing structure, efficient and stable installation between the sealing block and the prefabricated exterior wall is achieved. This not only ensures precise alignment between the sealing block and the exterior wall but also facilitates quick and accurate installation by construction personnel on-site.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building technology, specifically to a prefabricated exterior wall opening sealing and waterproofing structure and its application method. Background Technology

[0002] Prefabricated modular buildings refer to buildings constructed using prefabricated products manufactured on factory assembly lines as components, which are then assembled and connected. These prefabricated products are concrete components such as walls, beams, slabs, columns, balconies, and stairs, which are prefabricated in factories. After these components are completed, they are transported to the construction site, where they are assembled and connected to form the required building structure. Looking at the entire process, it can be seen that it has advantages such as high overall precision, compact construction schedule, better on-site construction environment, and a significant reduction in material waste.

[0003] As an important component of prefabricated buildings, prefabricated exterior walls are assembled on the construction site. Horizontal and vertical joints are easily generated between prefabricated components. There are also joints at the reserved installation cavities of the prefabricated components and at the junction of the prefabricated components and the cast-in-place concrete structure. These joints are prone to deformation and cracks, which can form channels for water seepage and cause leakage during the rainy season.

[0004] In the current construction industry, although precast exterior walls have brought many conveniences to construction due to their efficient and standardized production mode, the existing precast exterior wall designs often fail to fully consider the convenience and efficiency of sealing the installation cavity. They lack a suitable and easy-to-install sealing block structure, which increases the difficulty and complexity of on-site construction. Improper installation can also lead to poor sealing effect, thereby affecting the waterproof performance and structural stability of the entire exterior wall system.

[0005] In terms of waterproofing structures, most precast exterior wall installation cavities rely solely on a single waterproof sealant as a waterproof barrier. While waterproof sealant does offer some waterproofing, it is susceptible to environmental factors (such as temperature changes, humidity fluctuations, and ultraviolet radiation) during long-term use, leading to aging and cracking, thus weakening its waterproofing performance. Furthermore, the use of waterproof sealant alone is often insufficient to cope with complex and varied construction environments, such as installation cavities of varying sizes and shapes, or situations requiring the application of high water pressure, all of which affect the waterproofing effectiveness of the sealant. Summary of the Invention

[0006] The purpose of this invention is to provide a prefabricated exterior wall opening sealing and waterproofing structure and its application method, which has the advantages of improving sealing and waterproofing performance and solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated exterior wall opening sealing and waterproofing structure, comprising: a prefabricated exterior wall, wherein a mounting cavity is formed on the surface of the prefabricated exterior wall, and two symmetrically arranged slots are formed on both sides of the inner wall of the mounting cavity, and inclined blocks are fixedly connected to both sides of the inner cavity of the slots.

[0008] The inner cavity of the placement cavity is equipped with a sealing structure.

[0009] The sealing structure includes a sealing plate located inside the cavity. A bidirectional threaded rod is rotatably connected to the center of the cavity of the sealing plate. A bevel gear 1 is fixedly connected to the surface of the bidirectional threaded rod. A transmission tube is provided through one side of the sealing plate. One end of the transmission tube passes through the cavity of the sealing plate and is fixedly connected to a bevel gear 2. The bevel gear 1 and the bevel gear 2 mesh. Two symmetrically arranged U-shaped moving plates 56 are threadedly connected to the surface of the bidirectional threaded rod 52. Two symmetrically arranged locking blocks are fixedly connected to one side of the U-shaped moving plates. The locking blocks are respectively adapted to the locking groove and the inclined block.

[0010] The prefabricated exterior walls have an internal waterproof structure.

[0011] The waterproof structure includes a strip-shaped channel, which is formed inside the precast exterior wall. The inner cavity of the strip-shaped channel is connected to several drainage pipes. One end of each drainage pipe extends to the outside of the precast exterior wall. A flashing layer is provided on one side of the precast exterior wall. Venting layers are provided on the other side of the precast exterior wall and on one side of the flashing layer. Polymer cement waterproof coating and polyurethane waterproof coating are respectively applied to the opposite sides of the two venting layers.

[0012] Furthermore, as a preferred embodiment of the present invention, auxiliary blocks are fixedly connected to both sides of the card block, the auxiliary blocks are adapted to the card slot, and one side of the auxiliary block is fixedly connected to the U-shaped moving plate.

[0013] Furthermore, as a preferred embodiment of the present invention, the surface of the card block is provided with an inclined surface adapted to the inclined block.

[0014] Furthermore, as a preferred embodiment of the present invention, the top and bottom of the U-shaped moving plate are fixedly connected to limit blocks, and the two sides of the inner cavity of the sealing plate are provided with limit grooves that are adapted to the limit blocks.

[0015] Furthermore, as a preferred embodiment of the present invention, a support plate is rotatably connected to one side of the transmission tube, the support plate is located on one side of the bevel gear two, and the bottom of the support plate is fixedly connected to the sealing plate.

[0016] Furthermore, as a preferred embodiment of the present invention, an injection hole is provided on one side of the top of the precast exterior wall and the sealing plate, and the inner cavity of the injection hole is connected to the installation cavity.

[0017] Furthermore, as a preferred embodiment of the present invention, a tongue and groove is provided on one side of the mounting cavity, and a water baffle is provided in the inner cavity of the tongue and groove, with one side of the water baffle being fixedly connected to the sealing plate.

[0018] Furthermore, as a preferred embodiment of the present invention, one end of the transmission pipe extends to the outside of the baffle plate, and three positioning rods arranged in a ring are fixedly connected to the inner cavity of the transmission pipe. A rotating rod is provided in the inner cavity of the transmission pipe, and a positioning groove adapted to the positioning rod is formed on the surface of the rotating rod.

[0019] Furthermore, as a preferred embodiment of the present invention, water-stop steel plates are fixedly connected to both sides of the prefabricated exterior wall.

[0020] This invention discloses a method for using a prefabricated exterior wall opening sealing and waterproofing structure, the method comprising the following steps:

[0021] Step 1: After placing the sealing plate in the inner cavity of the installation chamber and aligning the water baffle with the tongue and groove, the construction personnel connect the rotating rod to the transmission pipe. With the positioning rod positioned in the inner cavity of the positioning groove, the rotating rod is rotated. The rotating rod drives the transmission pipe to rotate via the positioning rod, which in turn drives the second bevel gear to rotate. Since the second bevel gear and the double-threaded rod are meshed, the second bevel gear drives the double-threaded rod to rotate. The double-threaded rod drives two U-shaped moving plates to move in opposite directions. The U-shaped moving plates push the locking block into the inner cavity of the slot. When the locking block contacts the inclined block, utilizing its surface slope and its own elasticity, the locking block is in a state of inward compression. The locking block continues to move into the inner cavity of the slot until the inclined block is between the locking block and the auxiliary block. Due to the elasticity of the locking block itself, when the inclined block is no longer acting on the locking block, the locking block returns to its original shape, thus locking into the inner cavity of the slot. At this point, the sealing structure completes the sealing of the installation chamber.

[0022] Step Two: After the sealing structure is connected to the precast exterior wall, the construction workers can pull the rotating rod to move it away from the inner cavity of the positioning rod. At this time, the construction workers can fill the inner cavity of the positioning rod with waterproof slurry and then fill the inner cavity of the sealing plate through the injection hole. This seals the space between the precast exterior wall and the sealing structure, ensuring the integrity of the seal between the precast exterior wall and the sealing plate.

[0023] Step 3: After sealing the cavity, apply polymer cement waterproof coating and a flashing layer to one side of the precast exterior wall. When the precast exterior wall is subjected to water pressure, the strip groove can absorb some of the pressure, preventing water from directly penetrating the waterproof structure. The drainage pipe, in conjunction with the strip groove, provides a drainage channel for seepage, promptly draining water that has seeped into the precast exterior wall and reducing the possibility of water retention. The flashing layer directs water flow in a predetermined direction, preventing water from flowing into the room. It also balances the air pressure difference, preventing damage to the polymer cement waterproof coating and polyurethane waterproof coating caused by excessive air pressure. At the same time, the flashing layer also helps to drain moisture and water from inside the precast exterior wall, keeping the structure dry. The polymer cement waterproof coating and polyurethane waterproof coating form a complete, high-strength, and tough waterproof film that can block the penetration of water molecules. The waterproof structure, through multi-layer protection, a combination of physical and chemical waterproofing methods, and a combination of active drainage and passive protection, jointly completes the waterproof function, ensuring the waterproof effect of the building's exterior wall.

[0024] Beneficial Effects: The technical solution of this application has the following advantages: This invention improves sealing and waterproofing performance. Through the carefully designed sealing structure, efficient and stable installation between the sealing block and the prefabricated exterior wall is achieved. This not only ensures precise alignment between the sealing block and the exterior wall but also facilitates quick and accurate installation by construction personnel on-site, ensuring a tight fit between the sealing block and the exterior wall and effectively preventing the penetration of moisture, air, or other harmful substances. The waterproofing structure, including waterproof coating, flashing, strip grooves, and drainage pipes, enhances the waterproofing performance of the prefabricated exterior wall. The waterproof coating, with its penetration resistance and adhesion, adheres tightly to the building surface, effectively isolating external water sources. The flashing enhances the overall strength and durability of the waterproofing layer, maintaining stable waterproofing even under harsh weather conditions. The combined use of the strip grooves and drainage pipes guides and removes infiltrated water, preventing its accumulation inside the structure and eliminating potential leakage hazards. This significantly improves the waterproofing performance of the prefabricated exterior wall and extends its service life. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a partial three-dimensional schematic diagram of the structure of the present invention;

[0028] Figure 3 This is a bottom-view perspective view of a partial structural cross-section of the present invention.

[0029] Figure 4 This is a three-dimensional cross-sectional view of the sealing structure of the present invention;

[0030] Figure 5 This is a partially disassembled three-dimensional schematic diagram of the sealing structure of the present invention;

[0031] Figure 6 This is a three-dimensional schematic diagram of the waterproof structure of the present invention.

[0032] Figure 7 This is a cross-sectional view of the prefabricated exterior wall and waterproof structure of the present invention.

[0033] The meanings of the reference numerals in the figures are as follows: 1. Precast exterior wall; 2. Installation cavity; 3. Slot; 4. Inclined block; 5. Sealing structure; 51. Sealing plate; 52. Bidirectional threaded rod; 53. Bevel gear one; 54. Transmission pipe; 55. Bevel gear two; 56. U-shaped moving plate; 57. Slot; 58. Auxiliary block; 59. Limiting block; 510. Limiting groove; 511. Support plate; 512. Positioning rod; 513. Rotating rod; 514. Positioning groove; 6. Waterproof structure; 61. Strip groove; 62. Drainage pipe; 63. Flashing layer; 64. Venting layer; 65. Polymer cement waterproof coating; 66. Polyurethane waterproof coating; 7. Injection hole; 8. Waterproofing plate; 9. Water-stop steel plate. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. To better understand the technical content of the present invention, specific embodiments are provided and described in conjunction with the accompanying drawings. Various aspects of the present invention are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] As attached Figure 1 To be continued Figure 7 As shown: This embodiment provides a prefabricated exterior wall opening sealing and waterproofing structure, including: a prefabricated exterior wall 1, the surface of the prefabricated exterior wall 1 is provided with a mounting cavity 2, and two symmetrically arranged slots 3 are provided on both sides of the inner wall of the mounting cavity 2, and inclined blocks 4 are fixedly connected to both sides of the inner cavity of the slots 3.

[0036] The inner cavity of the placement cavity 2 is equipped with a sealing structure 5.

[0037] The sealing structure 5 includes a sealing plate 51 located inside the cavity of the placement cavity 2. A bidirectional threaded rod 52 is rotatably connected to the center of the cavity of the sealing plate 51. A bevel gear 53 is fixedly connected to the surface of the bidirectional threaded rod 52. A transmission tube 54 is provided through one side of the sealing plate 51. One end of the transmission tube 54 passes through the cavity of the sealing plate 51 and is fixedly connected to a bevel gear 55. The bevel gear 53 meshes with the bevel gear 55. Two symmetrically arranged U-shaped moving plates 56 are threadedly connected to the surface of the bidirectional threaded rod 52. Two symmetrically arranged locking blocks 57 are fixedly connected to one side of the U-shaped moving plates 56. The surface of the locking blocks 57 is provided with an inclined surface that matches the inclined block 4. The locking blocks 57 are respectively matched with the locking groove 3 and the inclined block 4.

[0038] The prefabricated exterior wall 1 has a waterproof structure 6 inside.

[0039] The waterproof structure 6 includes a strip groove 61, which is located inside the precast exterior wall 1. The inner cavity of the strip groove 61 is connected to several drainage pipes 62. One end of the drainage pipes 62 extends to the outside of the precast exterior wall 1. A flashing layer 63 is provided on one side of the precast exterior wall 1. An air venting layer 64 is provided on the other side of the precast exterior wall 1 and on one side of the flashing layer 63. Polymer cement waterproof coating 65 and polyurethane waterproof coating 66 are respectively provided on the opposite sides of the two air venting layers 64.

[0040] Specifically, auxiliary blocks 58 are fixedly connected to both sides of the card block 57. The auxiliary blocks 58 are adapted to the card slot 3, and one side of the auxiliary blocks 58 is fixedly connected to the U-shaped moving plate 56.

[0041] In this embodiment, the sealing surface between the sealing structure 5 and the prefabricated exterior wall 1 is further increased by setting the auxiliary block 58, thereby improving the sealing performance between the prefabricated exterior wall 1 and the sealing structure 5.

[0042] Specifically, the top and bottom of the U-shaped moving plate 56 are fixedly connected to limit blocks 59, and the two sides of the inner cavity of the sealing plate 51 are provided with limit grooves 510 that are adapted to the limit blocks 59.

[0043] In this embodiment, the combination of the limiting block 59 and the limiting groove 510 serves to guide and limit the U-shaped moving plate 56, ensuring the movement trajectory of the U-shaped moving plate 56.

[0044] Specifically, a support plate 511 is rotatably connected to one side of the transmission tube 54. The support plate 511 is located on one side of the bevel gear 55, and the bottom of the support plate 511 is fixedly connected to the sealing plate 51.

[0045] In this embodiment, the support plate 511 serves to support the second bevel gear 55, further ensuring the stability of the second bevel gear 55 during rotation.

[0046] Specifically, injection holes 7 are provided on one side of the top of the precast exterior wall 1 and the sealing plate 51, and the inner cavity of the injection hole 7 is connected to the installation cavity 2.

[0047] In this embodiment, the injection hole 7 provides a channel for injecting external waterproof slurry into the inner cavity of the sealing plate 51.

[0048] Specifically, a tongue and groove is provided on one side of the mounting cavity 2, and a water baffle 8 is provided in the inner cavity of the tongue and groove. One side of the water baffle 8 is fixedly connected to the sealing plate 51.

[0049] In this embodiment: by setting the tongue and groove joint and the baffle plate 8, firstly, by setting the tongue and groove joint, the water in the inner cavity of the placement cavity 2 can be diverted, and secondly, by setting the baffle plate 8, the sealing of the placement cavity 2 can be guaranteed.

[0050] Specifically, one end of the transmission pipe 54 extends to the outside of the baffle plate 8, and three positioning rods 512 arranged in a ring are fixedly connected to the inner cavity of the transmission pipe 54. A rotating rod 513 is provided in the inner cavity of the transmission pipe 54, and a positioning groove 514 adapted to the positioning rod 512 is opened on the surface of the rotating rod 513.

[0051] In this embodiment, the use of positioning rod 512, rotating rod 513 and positioning groove 514 together provides construction personnel with auxiliary tools for rotating transmission pipe 54, making it convenient to work on transmission pipe 54.

[0052] Specifically, both sides of the precast exterior wall 1 are fixedly connected with water-stop steel plates 9.

[0053] In this embodiment, the water-stop steel plate 9 effectively seals and blocks structural gaps when the prefabricated exterior wall 1 is connected to other exterior walls, preventing moisture penetration.

[0054] This invention discloses a method for using a prefabricated exterior wall opening sealing and waterproofing structure, the method comprising the following steps:

[0055] Step 1: After placing the sealing plate 51 into the inner cavity of the placement cavity 2, and aligning the water baffle 8 with the tongue and groove joint, the construction personnel connect the rotating rod 513 to the transmission pipe 54. With the positioning rod 512 positioned within the inner cavity of the positioning groove 514, the rotating rod 513 is rotated. The rotating rod 513, through the positioning rod 512, drives the transmission pipe 54 to rotate. The transmission pipe 54 then drives the second bevel gear 55 to rotate. Since the second bevel gear 55 and the double-threaded rod 52 are meshed, the second bevel gear 55 drives the double-threaded rod 52 to rotate. The double-threaded rod 52 then drives the two U-shaped moving plates 56 to rotate. Moving in opposite directions, the U-shaped moving plate 56 pushes the locking block 57 into the inner cavity of the slot 3. When the locking block 57 moves to contact the inclined block 4, it uses the inclined surface and its own elasticity to compress and shrink inward. The locking block 57 continues to move into the inner cavity of the slot 3 until the inclined block 4 is between the locking block 57 and the auxiliary block 58. Due to the elasticity of the locking block 57, when the inclined block 4 is not acting on the locking block 57, the locking block 57 returns to its original shape, so that the locking block 57 is locked into the inner cavity of the slot 3. At this time, the sealing structure 5 is used to seal the placement cavity 2.

[0056] Step Two: After the sealing structure 5 is connected to the precast exterior wall 1, the construction workers can pull the rotating rod 513, moving it away from the inner cavity of the positioning rod 512. At this time, the construction workers can fill the inner cavity of the positioning rod 512 with waterproof slurry and fill the inner cavity of the sealing plate 51 through the injection hole 7, thus sealing the space at the connection between the precast exterior wall 1 and the sealing structure 5, ensuring the integrity of the seal between the precast exterior wall 1 and the sealing plate 51.

[0057] Step 3: After sealing cavity 2, apply polymer cement waterproof coating 65 and a flashing layer 63 to one side of the precast exterior wall 1. When the precast exterior wall 1 is subjected to water pressure, the strip groove 61 can absorb part of the pressure, preventing water from directly penetrating the waterproof structure 6. The drainage pipe 62, in conjunction with the strip groove 61, provides a drainage channel for seepage, timely draining the water that has seeped into the interior of the precast exterior wall 1 and reducing the possibility of water retention. The flashing layer 63 allows water to flow in a set direction, thereby preventing water from flowing into the room. By balancing the air pressure difference, it prevents the polymer cement waterproof coating 65 and polyurethane waterproof coating 66 from being damaged due to excessive air pressure difference. At the same time, the flashing layer 63 also helps to drain moisture and water from the interior of the precast exterior wall 1, keeping the structure dry. The polymer cement waterproof coating 65 and polyurethane waterproof coating 66 form a complete, high-strength, and tough waterproof film that can block the penetration of water molecules. The waterproof structure 6, through multi-layer protection, a combination of physical and chemical waterproofing methods, and a combination of active drainage and passive protection, jointly completes the waterproofing function, ensuring the waterproofing effect of the building exterior wall.

[0058] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0059] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A prefabricated outer wall opening sealing and waterproofing structure, comprising: The utility model provides a prefabricated outer wall (1), its characterized in be: the surface of prefabricated outer wall (1) is seted up and is placed the cavity (2), two symmetries set up the clamping groove (3) in the both sides of the inner wall of placed cavity (2), the both sides of the inner chamber of clamping groove (3) all are fixedly connected with inclined block (4), The inner cavity of the placement cavity (2) is provided with a sealing structure (5). The sealing structure (5) includes a sealing plate (51) located in the inner cavity of the placement cavity (2), a two-way threaded rod (52) is rotatably connected to the center of the inner cavity of the sealing plate (51), a bevel gear one (53) is fixedly connected to the surface of the two-way threaded rod (52), a transmission pipe (54) penetrates through one side of the sealing plate (51), a bevel gear two (55) is fixedly connected to one end of the transmission pipe (54) that penetrates into the inner cavity of the sealing plate (51), the bevel gear one (53) is engaged with the bevel gear two (55), two symmetrically arranged U-shaped moving plates (56) are threadedly connected to the surface of the two-way threaded rod (52), two symmetrically arranged clamping blocks (57) are fixedly connected to one side of the U-shaped moving plate (56), and the clamping blocks (57) are respectively matched with the clamping grooves (3) and the inclined blocks (4). The interior of the prefabricated outer wall (1) is provided with a waterproof structure (6). The waterproof structure (6) includes a strip-shaped groove (61), which is arranged in the interior of the prefabricated outer wall (1), the inner cavity of the strip-shaped groove (61) is communicated with a plurality of drainage pipes (62), one end of the drainage pipe (62) penetrates to the outside of the prefabricated outer wall (1), a water spreading layer (63) is arranged on one side of the prefabricated outer wall (1), an air exhaust layer (64) is arranged on the other side of the prefabricated outer wall (1) and one side of the water spreading layer (63), and polymer cement waterproof paint (65) and polyurethane waterproof paint (66) are respectively arranged on the sides opposite to the two air exhaust layers (64).

2. The prefabricated outer wall opening sealing and waterproofing structure according to claim 1, characterized in that: Both sides of the clamping block (57) are fixedly connected with auxiliary blocks (58), the auxiliary blocks (58) are matched with the clamping grooves (3), and one side of the auxiliary blocks (58) is fixedly connected with the U-shaped moving plate (56).

3. The prefabricated outer wall hole sealing and waterproofing structure according to claim 2, characterized in that: A slope matched with the inclined block (4) is arranged on the surface of the clamping block (57).

4. The prefabricated outer wall opening sealing and waterproofing structure according to claim 3, characterized in that: Limiting blocks (59) are fixedly connected to the top and bottom of the U-shaped moving plate (56), and limiting grooves (510) matched with the limiting blocks (59) are arranged on the two sides of the inner cavity of the sealing plate (51).

5. The prefabricated outer wall opening sealing and waterproofing structure according to claim 4, characterized in that: A supporting plate (511) is rotatably connected to one side of the transmission pipe (54), and the supporting plate (511) is located on one side of the bevel gear two (55).

6. The prefabricated outer wall opening sealing and waterproofing structure according to claim 5, characterized in that: One side of the top of the prefabricated outer wall (1) and the sealing plate (51) is provided with a pouring hole (7), and the inner cavity of the pouring hole (7) is communicated with the placement cavity (2).

7. A prefabricated outer wall opening sealing and waterproofing structure according to claim 6, characterized in that: A notch is arranged on one side of the placement cavity (2), a water baffle (8) is arranged in the inner cavity of the notch, and one side of the water baffle (8) is fixedly connected with the sealing plate (51).

8. The prefabricated outer wall opening sealing and waterproofing structure according to claim 7, characterized in that: One end of the transmission pipe (54) penetrates to the outside of the water baffle (8), the inner cavity of the transmission pipe (54) is fixedly connected with three positioning rods (512) arranged in a ring shape, and the inner cavity of the transmission pipe (54) is provided with a rotating rod (513), and the surface of the rotating rod (513) is provided with a positioning groove (514) matched with the positioning rod (512).

9. The prefabricated outer wall opening sealing and waterproofing structure according to claim 8, characterized in that: Both sides of the prefabricated outer wall (1) are fixedly connected with water stop steel plates (9).

10. The use of a prefabricated outer wall opening sealing and waterproofing structure according to claim 9, characterized in that: The method comprises the following steps: Step one: after the sealing plate (51) is placed in the inner cavity of the installation cavity (2) and the water baffle (8) is connected with the rabbet, the construction personnel connect the rotating rod (513) with the transmission pipe (54), the positioning rod (512) is located in the inner cavity of the positioning groove (514), the rotating rod (513) is rotated, the rotating rod (513) drives the transmission pipe (54) to rotate through the positioning rod (512), the transmission pipe (54) drives the bevel gear two (55) to rotate, the bevel gear two (55) and the bidirectional threaded rod (52) are meshed, and then the bevel gear two (55) drives the bidirectional threaded rod (52) to rotate, the bidirectional threaded rod (52) drives the two U-shaped moving plates (56) to move away from each other, the U-shaped moving plate (56) pushes the clamping block (57) to move to the inner cavity of the clamping groove (3), when the clamping block (57) moves to be in contact with the inclined block (4), the inclined surface formed on the surface of the clamping block (57) and the elasticity of the clamping block (57) are utilized, the clamping block (57) is in a state of being inwardly extruded and contracted, the clamping block (57) continues to move to the inner cavity of the clamping groove (3) until the inclined block (4) is located between the clamping block (57) and the auxiliary block (58), due to the elastic property of the clamping block (57), when the inclined block (4) does not act on the clamping block (57), the clamping block (57) restores to the original shape, so that the clamping block (57) is clamped into the inner cavity of the clamping groove (3), and the sealing structure (5) is utilized to complete the sealing of the installation cavity (2); Step two: when the sealing structure (5) is connected with the prefabricated outer wall (1), the construction personnel can pull the rotating rod (513) to move away from the inner cavity of the positioning rod (512), at this time, the construction personnel can fill waterproof slurry into the inner cavity of the positioning rod (512) and fill the waterproof slurry into the inner cavity of the sealing plate (51) through the pouring hole (7), so that the space at the connecting position between the prefabricated outer wall (1) and the sealing structure (5) is sealed, and the integrity of the prefabricated outer wall (1) and the sealing plate (51) is ensured. Step three: after the sealing of the cavity (2), polymer cement waterproof coating (65) and a water layer (63) are applied to one side of the prefabricated outer wall (1). When the prefabricated outer wall (1) is subjected to water pressure, the strip-shaped groove (61) can absorb part of the pressure, preventing water from directly penetrating the waterproof structure (6). The hydrophobic pipe (62) cooperates with the strip-shaped groove (61) to provide a drainage channel for water seepage, promptly discharging water that has seeped into the interior of the prefabricated outer wall (1), reducing the possibility of water retention. The water layer (63) is used to make the water flow in the set direction, thereby avoiding the inflow of water into the room. By balancing the air pressure difference, the destruction of the polymer cement waterproof coating (65) and the polyurethane waterproof coating (66) caused by excessive air pressure difference is prevented. At the same time, the water layer (63) also helps to discharge the moisture and water in the interior of the prefabricated outer wall (1), keeping the structure dry. The polymer cement waterproof coating (65) and the polyurethane waterproof coating (66) form a complete high-strength and tough waterproof coating film, which can block the penetration of water molecules. The waterproof structure (6) completes the waterproof function through multiple layers of protection, a combination of physical and chemical waterproof methods, and the combination of active drainage and passive protection, ensuring the waterproof effect of the building outer wall.

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