An inverted roof insulation drainage system and method of construction

Abstract

The application relates to the technical field of building drainage systems, in particular to an inverted roof insulation layer drainage system and a construction method, which comprises a variable-diameter reserved pipe and a filter hole reserved pipe, the surface of the filter hole reserved pipe is provided with a plurality of structural layer filter holes, and the inner wall of the filter hole reserved pipe is provided with two sliding grooves; the guiding sleeve is pressed downward to rotate, the guiding sleeve drives the guiding pins to move, the guiding pins drive the driving columns to rotate, the two guiding pins drive the driving disc to rotate, the driving disc drives a plurality of driving pins to move through the arc-shaped guiding opening, the driving pins drive the sliding plates to move, the sliding plates drive the corresponding protective plugs to be inserted into the structural layer filter holes through the extension rods, when the structural layer is laid, the structural layer filter holes provided on the surface of the filter hole reserved pipe are filled and protected by the plurality of protective plugs, and glue and other impurities generated during laying are prevented from blocking the filter holes and affecting normal use.

Description

Technical Field

[0001] This invention relates to the field of building drainage system technology, specifically an inverted roof insulation layer drainage system and its construction method. Background Technology

[0002] An inverted roof is a common building roof structure, typically consisting of, from bottom to top, a structural layer, a slope-forming layer, a waterproof layer, an insulation layer, a barrier layer, and a surface layer. Because this type of roof structure places the waterproof layer below the insulation layer, it effectively prevents the waterproof layer from aging and cracking due to external temperature fluctuations, ultraviolet radiation, or thermal expansion and contraction. This extends the service life of the waterproof layer and improves the overall durability of the building roof.

[0003] However, inverted roofs also have significant drawbacks during use. Specifically, when the upper layer leaks due to localized cracking or improper installation, rainwater can directly seep into the insulation layer. Since the insulation layer itself is often made of highly absorbent materials such as foam board and extruded polystyrene board, water easily accumulates within it. In cold northern regions, when the infiltrated water freezes and expands in winter, it directly affects the underlying waterproofing layer. Repeated freeze-thaw cycles over a long period can damage the waterproofing layer, leading to even more serious leaks. To address these technical problems, current technology typically involves embedding a drainage pipe with perforated surfaces inside the structural layer during roof construction. This pipe is then connected to the roof drainage system, allowing water from the insulation layer to seep through the perforated holes into the embedded pipe and be drained through the downpipe, thus achieving water drainage of the insulation layer. However, in actual construction, this requires the extensive use of fluid and adhesive building materials such as glue, asphalt, and concrete. During the construction, pouring, or coating process, these materials can easily enter the filter holes on the outer wall of the embedded pipe through gravity or adhesion. This is especially true when the filter holes are facing upwards or without effective shielding, making it easier for the filter holes to be blocked by adhesive materials. Once the filter holes are blocked, the water in the insulation layer will not be able to drain smoothly, thus affecting the normal use of the drainage pipe.

[0004] Therefore, how to effectively prevent construction materials from clogging the filter holes of the embedded pipes during construction without changing the advantages of the inverted roof structure is one of the key technical problems that urgently need to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to provide an inverted roof insulation layer drainage system and construction method to solve the problems mentioned in the background art.

[0006] This invention provides an inverted roof insulation layer drainage system, including a variable diameter reserved pipe and a filter hole reserved pipe. The surface of the filter hole reserved pipe is provided with multiple structural layer filter holes. The inner wall of the filter hole reserved pipe is provided with two sliding grooves. A protective component is provided inside the filter hole reserved pipe. The protective component is provided with a sliding part that cooperates with the sliding groove. A concrete layer embedding ring is fixedly installed on the upper outer wall of the filter hole reserved pipe. A snap-fit ​​unit for snapping the protective component is installed on the concrete layer embedding ring.

[0007] The protective assembly includes multiple protective plugs. A slider is slidably installed in the sliding groove. A filter cover is fixedly installed between two sliders. A sliding part is formed on the side of the filter cover. An installation port is opened on the upper side of the filter cover. A disassembly unit is installed in the installation port. A lower mounting plate is installed on the filter cover through the disassembly unit. A connecting post is fixedly installed on the upper side of the lower mounting plate. An upper mounting plate is fixedly installed on the top of the connecting post. Multiple sliding plates are slidably installed between the upper and lower mounting plates. Multiple extension rods are fixedly installed on one side of the sliding plates. The protective plug is installed on one end of the extension rod. A drive unit is rotatably installed on the upper side of the upper mounting plate.

[0008] Preferably, the drive unit includes a drive disk, which is rotatably mounted on the upper side of the upper mounting disk. The upper side of the upper mounting disk has multiple clearance openings, which are elongated holes arranged radially along the upper mounting disk. A drive pin is fixedly mounted on the upper side of the connecting column. The drive disk has multiple arc-shaped guide openings, and the drive pin slides through the clearance openings and arc-shaped guide openings. The drive pin and the corresponding arc-shaped guide opening can slide relative to each other.

[0009] Preferably, the drive unit further includes a protective cover, which is disposed within the embedded ring of the concrete layer. Two snap-fit ​​grooves are formed on the side of the protective cover. A guide sleeve is fixedly installed on the lower side of the protective cover. The guide sleeve is a closed-top cylinder with rotating guide openings on both sides of its lower portion. A drive column is fixedly installed on the upper side of the drive disc. Two guide pins are fixedly installed on the side of the drive column. The drive column slides into the open end of the guide sleeve, allowing the two guide pins to slide into their corresponding rotating guide openings. A rotating pad is rotatably installed on the upper side of the drive column. A return spring is provided between the rotating pad and the guide sleeve, and the return spring is in a compressed state.

[0010] Preferably, two sliding grooves are formed on the upper side of the concrete layer embedding ring, and a sliding block is slidably installed in the sliding groove. A locking rod is fixedly installed on one side of the sliding block, and one end of the locking rod extends to the outer side of the inner wall of the concrete layer embedding ring. A positioning spring is fixedly installed on the other side of the sliding block, and the other end of the positioning spring is fixedly installed on the inner wall of the sliding groove. A lever is fixedly installed on the upper side of the sliding block, and the lever protrudes from the concrete layer embedding ring.

[0011] Preferably, the disassembly unit includes two L-shaped locking blocks. The filter cover has mirrored sliding holes, and two push rods are slidably installed in the sliding holes. The two push rods are symmetrically arranged on both sides of the filter cover. An L-shaped locking block is fixedly installed at one adjacent end of each push rod. The L-shaped locking blocks are inverted, that is, the horizontal part of the L-shaped locking block is on the upper side and faces the push rod on the corresponding side. A positioning block is fixedly installed on the lower side of the lower mounting plate. A quick-release groove is opened at the bottom of the positioning block. The bottom width of the quick-release groove is greater than the top width, and a locking part is formed at the top of the quick-release groove. The L-shaped locking block corresponds to the quick-release groove and can extend into the quick-release groove. A tension spring is fixedly installed between the L-shaped locking block and the inner wall of the mounting port.

[0012] Preferably, the vertical cross-section of the push rod has the same dimensions as the vertical cross-section of the snap-fit ​​rod, and the elastic coefficient of the positioning spring is greater than that of the tension spring.

[0013] Preferably, two snap-fit ​​blocks are fixedly installed on the inner wall of the variable diameter reserved tube, and two snap-fit ​​interfaces are opened on the surface of the filter hole reserved tube. The lower end of the filter hole reserved tube extends into the large end of the variable diameter reserved tube, so that the snap-fit ​​blocks enter the corresponding snap-fit ​​interfaces.

[0014] Preferably, the outer end of the filter holes in the structural layer is inclined higher than the inner end.

[0015] Preferably, the protective cover has a groove protruding on the top for easy lifting.

[0016] The present invention also provides a method for constructing an inverted roof insulation layer drainage system, comprising the following steps:

[0017] S1. First, the reducing pipe is fitted onto the top of the pre-embedded downpipe in the building and connected, and then the structural layer construction begins.

[0018] S2. Following the construction plan for the inverted roof, first pour the cast-in-place reinforced concrete roof slab, then pour the variable diameter reserved pipe inside, with the top of the variable diameter reserved pipe extending out. Then, construct the structural slope layer and waterproof layer on top, where the waterproof layer needs to extend into the variable diameter reserved pipe, forming a downward inward structure of the waterproof layer. The inward structure is located above the snap-fit ​​block to ensure the waterproofness of the roof layer. Then, place the filter hole reserved pipe on top of the variable diameter reserved pipe and connect it. On top of the waterproof layer, construct the extruded polystyrene board insulation layer, non-woven fabric isolation layer, and fine stone concrete protective layer in sequence. Embed the filter hole reserved pipe in this structural layer. During the construction process, fill and protect the structural layer filter holes opened on the surface of the filter hole reserved pipe with multiple protective plugs.

[0019] S3. After the multi-layer structure has solidified and stabilized, pull the drive unit upward. The drive unit will drive multiple sliding plates to move closer to each other. The multiple sliding plates will drive the corresponding protective plugs away from the filter holes of the structure through the extension rod. Then, remove the upper and lower mounting plates and leave the filter cover at the top of the filter hole pre-reserved pipe to complete the construction of the drainage system.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. By rotating and pressing the guide sleeve downwards, the guide sleeve drives the guide pin to move. The guide pin drives the drive column to rotate. The two guide pins drive the drive disc to rotate. The drive disc drives multiple drive pins to move through the arc-shaped guide port. The drive pins drive the sliding plate to move. The sliding plate drives the corresponding protective plug to be inserted into the structural layer filter hole through the extension rod. When laying the structural layer, multiple protective plugs fill and protect the structural layer filter hole opened on the surface of the filter hole pre-reserved pipe to prevent glue and other impurities generated during laying from clogging the filter hole and affecting normal use.

[0022] 2. After the multi-layer structure has solidified and stabilized, the lever is turned by hand. The lever causes the sliding block to move, which in turn causes the locking rod to disengage from the locking groove, causing the protective cover to pop up. Then, by pulling the protective cover upward, the guide sleeve moves upward. The guide sleeve rotates the guide port, which in turn causes the two guide pins to move. The two guide pins drive the drive disc to rotate, and the drive disc drives multiple drive pins to move through the arc-shaped guide port. The drive pins drive the sliding plate to move, and the sliding plate, through the extension rod, causes the corresponding protective plug to retract, causing the protective plug to disengage from the filter hole of the structural layer.

[0023] 3. After the protective plug is disengaged from the filter hole of the structural layer, continue to pull upwards. The guide pin at the bottom of the rotating guide port drives the upper mounting plate to move. The upper mounting plate drives the lower guide plate to move upwards through the connecting column. The lower guide plate drives the positioning block to move upwards. The positioning block drives the filter cover to move upwards in contact with the filter hole pre-reserved tube under the action of the two sliders through two L-shaped locking blocks and push rods. When it moves to the concrete layer embedded in the inner wall of the ring, one end of the two push rods is in contact with one end of the locking rod. At this time, the positioning spring pushes the locking rod to push the push rod in and insert the locking rod into the sliding hole. As the two push rods are pushed in, the two L-shaped locking blocks move closer to each other, causing the two L-shaped locking blocks to disengage from the positioning block. Thus, the structure except the filter cover is pulled out from the filter hole pre-reserved tube for reuse. The filter cover is left at the upper pipe opening of the filter hole pre-reserved tube to filter impurities. Attached Figure Description

[0024] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of the variable diameter reserved tube of the present invention;

[0027] Figure 3 This is a schematic diagram of the cross-sectional structure of the filter hole reserved pipe of the present invention;

[0028] Figure 4 This is a schematic diagram of the protective component structure of the present invention;

[0029] Figure 5 yes Figure 4 Enlarged structural diagram of region A in the middle;

[0030] Figure 6 This is a schematic diagram of the concrete layer embedded ring section structure of the present invention;

[0031] Figure 7 yes Figure 6 Enlarged structural diagram of region B in the middle;

[0032] Figure 8 This is a cross-sectional view of the filter cap structure of the present invention;

[0033] Figure 9 yes Figure 8 Enlarged structural diagram of region C in the middle;

[0034] Figure 10 A schematic diagram of the structure for reserving a pipe for the water filter holes;

[0035] Figure 11 This is a structural diagram of the drainage system after construction.

[0036] Explanation of reference numerals in the attached drawings: 1. Variable diameter reserved pipe; 2. Filter hole reserved pipe; 3. Concrete layer embedded ring; 4. Protective cover; 5. Protective plug; 6. Snap-fit ​​interface; 7. Snap-fit ​​block; 8. Filter cover; 9. Extension rod; 10. Connecting column; 11. Sliding block; 12. Lower mounting plate; 13. Sliding plate; 14. Guide sleeve; 15. Return spring; 16. Rotating pad; 17. Drive column; 18. Drive plate; 19. Drive pin; 20. Clearance opening; 21. Upper mounting... 21. Disc; 22. Arc-shaped guide opening; 23. Rotating guide opening; 24. Guide pin; 25. Clip groove; 26. Connecting rod; 27. Pulling block; 28. Positioning spring; 29. ​​Sliding block; 30. Push rod; 31. Positioning block; 32. Tension spring; 33. L-shaped locking block; 34. Structural layer water filter hole; 35. Fine stone concrete protective layer; 36. Non-woven fabric isolation layer; 37. Extruded polystyrene board insulation layer; 38. Waterproof layer; 39. Slope finding layer; 40. Cast-in-place reinforced concrete roof panel. Detailed Implementation

[0037] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention necessarily exceeds the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but still fall within the protection scope of this application.

[0038] Figures 1-11 This is the preferred embodiment of the present invention, which is described below in conjunction with the accompanying drawings. Figures 1-11 The present invention will be further described below.

[0039] like Figures 1-11 As shown, an inverted roof insulation layer drainage system includes a variable diameter reserved pipe 1 and a filter hole reserved pipe 2. The filter hole reserved pipe 2 has multiple structural layer filter holes 34 on its pipe wall. The inner wall of the filter hole reserved pipe 2 has two axial sliding grooves. A protective component is installed inside the filter hole reserved pipe 2. The protective component has a sliding part that cooperates with the sliding groove. A concrete layer embedded ring 3 is fixedly installed on the outer wall of the upper end of the filter hole reserved pipe 2. A snap-fit ​​unit for snapping the protective component is installed on the concrete layer embedded ring 3.

[0040] The protective assembly includes multiple protective plugs 5, a slider 11 slidably installed in a sliding groove, a filter cover 8 fixedly installed between two sliders 11, a sliding part formed on the side of the filter cover 8, an installation port opened on the upper side of the filter cover 8, a disassembly unit installed in the installation port, a lower mounting plate 12 installed on the filter cover 8 through the disassembly unit, a connecting post 10 fixedly installed on the upper side of the lower mounting plate 12, an upper mounting plate 21 fixedly installed on the top of the connecting post 10, multiple sliding plates 13 slidably installed between the upper mounting plate 21 and the lower mounting plate 12, multiple extension rods 9 fixedly installed on one side of the sliding plate 13, a protective plug 5 installed on one end of the extension rod 9, and a drive unit installed on the upper mounting plate 21.

[0041] With the above structure, a pre-embedded filter hole reserved pipe 2 is installed inside the structural layer, and multiple structural layer filter holes 34 are set at equal intervals on the pipe wall. The number of protective plugs 5 in the protective assembly is consistent with the number of structural layer filter holes 34. The protective plugs 5 are composed of an internal metal skeleton and an external silicone soft package. While ensuring the tightness of the seal, it can also meet the design of the inclined surface of the structural layer filter holes 34 to prevent motion interference. Under the action of the drive unit, multiple sliding plates 13 are driven to move, and the protective plugs 5 are inserted into the corresponding structural layer filter holes 34 through the extension rod 9. This provides sealing protection during the laying of the structural layer, prevents impurities from entering, and ensures the normal operation of the drainage function in the later stage.

[0042] Furthermore, the drive unit includes a drive disk 18, which is rotatably mounted on the upper side of the upper mounting disk 21. The upper side of the upper mounting disk 21 has multiple clearance openings 20, which are elongated holes arranged radially along the upper mounting disk 21. A drive pin 19 is fixedly mounted on the upper side of the connecting post 10. The drive disk 18 has multiple arc-shaped guide openings 22. The drive pin 19 slides through the clearance opening 20 and extends into the corresponding arc-shaped guide opening 22. The drive pin 19 and the corresponding arc-shaped guide opening 22 can slide relative to each other.

[0043] With the above structure, the drive unit is located in the central area of ​​the filter hole pre-reserved pipe 2, penetrating the entire filter hole pre-reserved pipe 2. It includes a drive disc 18, drive pins 19, and arc-shaped guide ports 22. The number of drive pins 19 and arc-shaped guide ports 22 are the same. After the structural layer solidifies, rotating the drive disc 18 drives the drive pins 19 to move, causing them to move closer or further apart along a central radial trajectory, thus separating the protective plug 5 from the filter hole 34 of the structural layer. This structure can be operated without damaging the upper surface material after the structural layer has cured, facilitating later maintenance. At the same time, it ensures that the drainage function is quickly restored, avoiding structural damage caused by long-term water retention in the insulation layer.

[0044] Furthermore, the drive unit also includes a protective cover 4, which is set inside the embedded ring 3 in the concrete layer. Two snap-fit ​​grooves are opened on the side of the protective cover 4. A guide sleeve 14 is fixedly installed on the lower side of the protective cover 4. The guide sleeve 14 is a cylinder with a closed top. Rotation guide ports 23 are opened on both sides of the lower part of the guide sleeve 14. A drive column 17 is fixedly installed on the upper side of the drive disc 18. Two guide pins 24 are fixedly installed on the side of the drive column 17. The drive column 17 slides into the open end of the guide sleeve 14, so that the two guide pins 24 can slide into the corresponding rotation guide ports 23. A rotating pad 16 is rotatably installed on the upper side of the drive column 17. A return spring 15 is provided between the rotating pad 16 and the guide sleeve 14. The return spring 15 is in a compressed state.

[0045] With the above structure, the protective cover 4 seals the upper end of the filter hole reserved pipe 2. The guide sleeve 14 is coaxially installed on the lower side of the protective cover 4. When the guide sleeve 14 is pushed down, the two guide pins 24 drive the drive column 17 to rotate. The drive column 17 drives the drive disc 18 to rotate, so that multiple protective plugs 5 are inserted into the structural layer filter hole 34. Conversely, they are pulled out. The reset spring 15 and the rotating pad 16 installed inside the guide sleeve 14 can reset the guide sleeve 14 and help the protective plugs 5 to be pulled out of the structural layer filter hole 34. In addition, the protective cover 4 seals the pipe opening of the filter hole reserved pipe 2 during construction, forming a secondary protection for the structural layer filter hole 34, preventing mortar and concrete from splashing into the hole and ensuring the system's airtightness. Its sliding assembly structure realizes tool-free quick installation and disassembly, which is conducive to construction convenience and maintainability.

[0046] Furthermore, two sliding grooves are provided on the upper side of the concrete layer embedded ring 3, and a sliding block 29 is slidably installed in the sliding groove. A locking rod 26 is fixedly installed on one side of the sliding block 29, and one end of the locking rod 26 extends to the outer side of the inner wall of the concrete layer embedded ring 3. A positioning spring 28 is fixedly installed on the other side of the sliding block 29, and the other end of the positioning spring 28 is fixedly installed on the inner wall of the sliding groove. A toggle block 27 is fixedly installed on the upper side of the sliding block 29, and the toggle block 27 protrudes from the concrete layer embedded ring 3.

[0047] With the above structure, the radius of the concrete layer embedded ring 3 is larger than the radius of the filter hole reserved pipe 2. When pre-embedding, the concrete layer embedded ring 3 needs to be kept horizontal with the uppermost concrete layer. The locking rod 26 is adapted to the locking groove. The positioning spring 28 cooperates with the sliding block 29 to push the locking rod 26 into the locking groove to complete the fixation of the protective cover 4. This ensures the reliable positioning of the protective cover 4 before and after construction, ensuring that it does not shift under the influence of large-area construction and vibration, and improving the structural stability.

[0048] Furthermore, the disassembly unit includes two L-shaped locking blocks 33. The filter cover 8 has mirrored sliding holes, and two push rods 30 are slidably installed in the sliding holes. The two push rods 30 are symmetrically arranged on both sides of the filter cover 8. An L-shaped locking block 33 is fixedly installed at the adjacent end of each of the two push rods 30. The L-shaped locking blocks 33 are inverted, that is, the horizontal part of the L-shaped locking blocks 33 is on the upper side and faces the push rod 30 on the corresponding side. A positioning block 31 is fixedly installed on the lower side of the lower mounting plate 12. A quick-release groove is opened at the bottom of the positioning block 31. The bottom width of the quick-release groove is greater than the top width, and a locking part is formed at the top of the quick-release groove. The L-shaped locking block 33 corresponds to the quick-release groove and can be inserted into the quick-release groove. A tension spring 32 is fixedly installed between the L-shaped locking block 33 and the inner wall of the mounting port.

[0049] With the above structure, the disassembly unit is arranged between the lower mounting plate 12 and the filter cover 8. It consists of two symmetrically installed L-shaped locking blocks 33 and a push rod 30 fixedly installed on one side. Two tension springs 32 are used to pull the two L-shaped locking blocks 33 in opposite directions, so that the L-shaped locking blocks 33 are always locked in the quick-release groove of the positioning block 31, and the horizontal part of the L-shaped locking blocks 33 is locked into the locking part of the quick-release groove, thereby connecting the filter cover 8 and the lower mounting plate 12. When disassembling, pushing the two push rods 30 into the filter cover 8 can unlock the locking state of the two L-shaped locking blocks 33 and the quick-release groove, thereby separating the filter cover 8 and the lower mounting plate 12. This structure facilitates the replacement of the filter cover 8 or the cleaning of the channels in the later stages of use, improving the safety and maintainability of the overall system.

[0050] Furthermore, the vertical cross-section of the push rod 30 is the same as that of the snap-fit ​​rod 26, and the elastic coefficient of the positioning spring 28 is greater than that of the tension spring 32.

[0051] With the above structure, the locking rod 26 and the push rod 30 are the same size. When the filter cover 8 moves to the highest position, one end of the two push rods 30 is attached to one end of the corresponding locking rod 26. At this time, since the elastic coefficient of the positioning spring 28 is greater than the elastic coefficient of the tension spring 32, the locking rod 26 together with the push rod 30 will be pushed into the sliding hole. As the two push rods 30 are pushed in, the two L-shaped locking blocks 33 move closer to each other, causing the two L-shaped locking blocks 33 to separate from the positioning block 31, thereby allowing the entire protective assembly to be removed. The bottom filter cover 8 is left at the upper pipe opening of the filter hole reserved tube 2 to filter impurities and protect the structural layer filter holes 34 opened on the filter hole reserved tube 2.

[0052] Furthermore, two snap-fit ​​blocks 7 are fixedly installed on the inner wall of the variable diameter reserved pipe 1, and two snap-fit ​​interfaces 6 are opened on the surface of the filter hole reserved pipe 2. The lower end of the filter hole reserved pipe 2 extends into the large end of the variable diameter reserved pipe 1, so that the snap-fit ​​blocks 7 enter the corresponding snap-fit ​​interfaces 6.

[0053] With the above structure, two snap-fit ​​blocks 7 are symmetrically installed on the lower inner wall of the variable diameter reserved pipe 1. Each snap-fit ​​block consists of a cylindrical inner skeleton and a silicone ring covering the inner skeleton. The two snap-fit ​​interfaces 6 are located on the lower side of the surface of the filter hole reserved pipe 2, in a horizontal L-shape. During installation, the bent waterproof layer 38 is above the snap-fit ​​block 7 and will not interfere with the snap-fit ​​interface 6. The snap-fit ​​block 7 can be installed normally. The terminal locking position is provided with a release port for the soft silicone material on the surface of the snap-fit ​​block 7. When the snap-fit ​​block 7 reaches this position, the soft silicone material is released to fix the filter hole reserved pipe 2, realizing the connection between the filter hole reserved pipe 2 and the variable diameter reserved pipe 1. This avoids the shaking caused by direct connection and can reduce the drainage failure rate in later use, ensuring the water tightness of the structure.

[0054] Furthermore, the outer end of the filter hole 34 in the structural layer is inclined higher than the inner end.

[0055] With the above structure, the filter holes 34 in the structural layer are inclined, which facilitates the collection of liquid and its automatic flow into the pipe cavity, forming a flow path. This structure improves the water flow guidance performance through geometric adjustment, reduces the risk of water retention in the insulation layer, and can also quickly drain water flowing into the concrete layer, preventing backflow into the insulation layer, which is beneficial to improving the overall drainage efficiency of the roof system.

[0056] Furthermore, the top of the protective cover 4 has a protruding groove 25 for easy lifting.

[0057] With the above structure, the locking groove 25 is designed for manual lifting, facilitating easy disassembly by operators. This also prevents mud and other substances from covering the upper side of the device during structural layer installation, thus avoiding collateral damage to surrounding structures during disassembly and enhancing the system's flexibility and durability.

[0058] Working principle: When the device is in use, the variable diameter reserved pipe 1 is sleeved on the top of the pre-embedded downpipe in the building and connected, and then the structural layer construction begins; according to the construction plan of the inverted roof, a 120mm thick cast-in-place reinforced concrete roof panel 40 is poured first, the variable diameter reserved pipe 1 is poured inside, and the top of the variable diameter reserved pipe 1 extends out, and then the structural slope layer 39 and waterproof layer 38 are constructed on top, and then the filter hole reserved pipe 2 is placed on the top of the variable diameter reserved pipe 1 and connected. On the top of the waterproof layer 38, a 130mm thick extruded polystyrene board insulation layer 37, a non-woven fabric isolation layer 36, and a 40mm thick C20 fine stone concrete protective layer 35 are constructed in sequence, and the filter hole reserved pipe 2 is buried in the structural layer. During the construction process, multiple protective plugs 5 are used to fill and protect the structural layer filter holes 34 opened on the surface of the filter hole reserved pipe 2.

[0059] A waterproof layer 38 is formed by a 2mm thick non-curing rubber asphalt waterproof coating and a 3mm thick SBS polyester-based waterproof membrane. The SBS polyester-based waterproof membrane needs to extend into the variable diameter reserved pipe 1 to form a downward inward structure of the waterproof membrane. The inward structure is located above the snap-fit ​​block 7 to ensure the waterproofness of the roof layer. The filter hole reserved pipe 2 is pre-embedded in this structural layer. During the laying process, multiple protective plugs 5 are used to fill and protect the structural layer filter holes 34 opened on the surface of the filter hole reserved pipe 2 to prevent glue and other impurities generated during laying from clogging the structural layer filter holes 34 and affecting normal use.

[0060] After the multi-layer structure has solidified and stabilized, first, manually move the lever 27. Lever 27 causes the sliding block 29 to move, and the sliding block 29 causes the locking rod 26 to disengage from the locking groove, causing the protective cover 4 to pop up. Then, manually hold the locking groove 25 and pull it upward. During the pulling process, the protective cover 4 causes the guide sleeve 14 to move upward. The guide sleeve 14 drives the two guide pins 24 to move by rotating the guide port 23. The two guide pins 24 drive the drive disk 18 to rotate. The drive disk 18 drives multiple drive pins 19 to move by arc-shaped guide port 22. The drive pins 19 drive the sliding plate 13 to move. The sliding plate 13 drives the corresponding protective plug 5 to retract by extending the rod 9, causing the protective plug 5 to disengage from the structural layer filter hole 34.

[0061] After the protective plug 5 disengages from the filter hole 34 in the structural layer, it continues to be pulled upwards. This causes the upper mounting plate 21 to move via the guide pin 24 at the bottom of the rotating guide port 23. The upper mounting plate 21, through the connecting column 10, causes the lower guide plate to move upwards. The lower guide plate then causes the positioning block 31 to move upwards. The positioning block 31, through two L-shaped locking blocks 33 and push rods 30, causes the filter cover 8 to move upwards, adhering to the filter hole pre-reserved pipe 2 under the action of two sliders 11. When it reaches the inner wall of the concrete layer embedded in the ring 3, the two push rods 30... One end of the connector is attached to one end of the locking rod 26. At this time, the positioning spring 28 pushes the locking rod 26 to push the push rod 30 in and insert the locking rod 26 into the sliding hole. As the two push rods 30 are pushed in, the two L-shaped locking blocks 33 move closer to each other, causing the two L-shaped locking blocks 33 to separate from the positioning block 31. Thus, the structure except the filter cover 8 is pulled out from the filter hole reserved tube 2 for reuse. The filter cover 8 is left at the upper opening of the filter hole reserved tube 2 to filter impurities, thus completing the installation of the device.

[0062] The present invention also provides a method for constructing an inverted roof insulation layer drainage system, comprising the following steps:

[0063] S1. First, install the reducing pipe 1 on the top of the pre-embedded downpipe in the building and connect it, then start the structural layer construction.

[0064] S2. According to the construction plan of the inverted roof, first pour the cast-in-place reinforced concrete roof panel 40, pour the variable diameter reserved pipe 1 inside, and extend the top of the variable diameter reserved pipe 1. Then, construct the structural slope layer 39 and waterproof layer 38 on top. The waterproof layer 38 needs to extend into the variable diameter reserved pipe 1 to form a downward inward structure of the waterproof layer 38. The inward structure is above the snap-fit ​​block 7 to ensure the waterproofness of the roof layer. Then, place the filter hole reserved pipe 2 on the top of the variable diameter reserved pipe 1 and connect it. On the top of the waterproof layer 38, construct the extruded polystyrene board insulation layer 37, non-woven fabric isolation layer 36, and fine stone concrete protective layer 35 in sequence. Bury the filter hole reserved pipe 2 in this structural layer. During the construction process, fill and protect the structural layer filter holes 34 opened on the surface of the filter hole reserved pipe 2 with multiple protective plugs 5 to prevent glue and other impurities generated during the laying from clogging the filter holes and affecting normal use.

[0065] S3. After the multi-layer structure has solidified and stabilized, pull the drive unit upward. The drive unit drives multiple sliding plates 13 to move closer to each other. The multiple sliding plates 13 drive the corresponding protective plugs 5 away from the water filter holes 34 of the structure through the extension rod 9. Then, remove the upper mounting plate 21 and the lower mounting plate 12 and leave the filter cover 8 at the top of the water filter hole reserved pipe 2 to complete the construction of the drainage system.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. An inverted roof insulation layer drainage system, comprising a variable diameter reserved pipe (1) and a filter hole reserved pipe (2), characterized in that: The surface of the filter hole reserved tube (2) is provided with multiple structural layer filter holes (34). The inner wall of the filter hole reserved tube (2) is provided with two sliding grooves. A protective component is provided inside the filter hole reserved tube (2). The protective component is provided with a sliding part that cooperates with the sliding groove. A concrete layer embedded ring (3) is fixedly installed on the upper outer wall of the filter hole reserved tube (2). A snap-fit ​​unit for snapping the protective component is installed on the concrete layer embedded ring (3). The protective assembly includes multiple protective plugs (5), a slider (11) is slidably installed in the sliding groove, and the same filter cover (8) is fixedly installed between two sliders (11). A sliding part is formed on the side of the filter cover (8). An installation port is opened on the upper side of the filter cover (8). A disassembly unit is installed in the installation port. A lower mounting plate (12) is installed on the filter cover (8) through the disassembly unit. A connecting column (10) is fixedly installed on the upper side of the lower mounting plate (12). An upper mounting plate (21) is fixedly installed at the top of the connecting column (10). Multiple sliding plates (13) are slidably installed between the upper mounting plate (21) and the lower mounting plate (12). Multiple extension rods (9) are fixedly installed on one side of the sliding plate (13). The protective plug (5) is installed at one end of the extension rod (9). A drive unit is rotatably installed on the upper side of the upper mounting plate (21).

2. The inverted roof insulation layer drainage system according to claim 1, characterized in that: The drive unit includes a drive disk (18), which is rotatably mounted on the upper side of the upper mounting disk (21). The upper side of the upper mounting disk (21) is provided with multiple clearance openings (20), which are elongated holes arranged radially along the upper mounting disk (21). A drive pin (19) is fixedly mounted on the upper side of the connecting column (10). The drive disk (18) is provided with multiple arc-shaped guide openings (22). The drive pin (19) slides through the clearance openings (20) and the arc-shaped guide openings (22). The drive pin (19) and the corresponding arc-shaped guide openings (22) can slide relative to each other.

3. The inverted roof insulation layer drainage system according to claim 2, characterized in that: The drive unit also includes a protective cover (4), which is set inside the concrete layer embedded ring (3). Two snap-fit ​​grooves are opened on the side of the protective cover (4). A guide sleeve (14) is fixedly installed on the lower side of the protective cover (4). The guide sleeve (14) is a cylinder with a closed top. Rotation guide ports (23) are opened on both sides of the lower part of the guide sleeve (14). A drive column (17) is fixedly installed on the upper side of the drive disc (18). Two guide pins (24) are fixedly installed on the side of the drive column (17). The drive column (17) slides into the open end of the guide sleeve (14), so that the two guide pins (24) can slide into the corresponding rotation guide ports (23). A rotating pad (16) is rotatably installed on the upper side of the drive column (17). A return spring (15) is provided between the rotating pad (16) and the guide sleeve (14). The return spring (15) is in a compressed state.

4. The inverted roof insulation layer drainage system according to claim 1, characterized in that: Two grooves are provided on the upper side of the concrete layer embedded ring (3). A sliding block (29) is slidably installed in the groove. A snap-fit ​​rod (26) is fixedly installed on one side of the sliding block (29). One end of the snap-fit ​​rod (26) extends to the outer side of the inner wall of the concrete layer embedded ring (3). A positioning spring (28) is fixedly installed on the other side of the sliding block (29). The other end of the positioning spring (28) is fixedly installed on the inner wall of the groove. A push block (27) is fixedly installed on the upper side of the sliding block (29). The push block (27) protrudes from the concrete layer embedded ring (3).

5. The inverted roof insulation layer drainage system according to claim 4, characterized in that: The disassembly unit includes two L-shaped locking blocks (33). The filter cover (8) has a mirrored sliding hole. Two push rods (30) are slidably installed in the sliding hole. The two push rods (30) are symmetrically arranged on both sides of the filter cover (8). An L-shaped locking block (33) is fixedly installed at one adjacent end of each of the two push rods (30). The L-shaped locking block (33) is inverted, that is, the horizontal part of the L-shaped locking block (33) is located on the upper side and the horizontal part is set towards the push rod (30) on the corresponding side. A positioning block (31) is fixedly installed on the lower side of the lower mounting plate (12). A quick release groove is opened at the bottom of the positioning block (31). The bottom width of the quick release groove is greater than the top width, and a locking part is formed at the top of the quick release groove. The L-shaped locking block (33) corresponds to the quick release groove and can be inserted into the quick release groove. A tension spring (32) is fixedly installed between the L-shaped locking block (33) and the inner wall of the mounting port.

6. The inverted roof insulation layer drainage system according to claim 5, characterized in that: The vertical cross-section of the push rod (30) has the same dimensions as the vertical cross-section of the snap-fit ​​rod (26), and the elastic coefficient of the positioning spring (28) is greater than that of the tension spring (32).

7. The inverted roof insulation layer drainage system according to claim 1, characterized in that: Two snap-fit ​​blocks (7) are fixedly installed on the inner wall of the variable diameter reserved pipe (1), and two snap-fit ​​interfaces (6) are opened on the surface of the filter hole reserved pipe (2). The lower end of the filter hole reserved pipe (2) extends into the large end of the variable diameter reserved pipe (1), so that the snap-fit ​​block (7) enters the corresponding snap-fit ​​interface (6).

8. The inverted roof insulation layer drainage system according to claim 1, characterized in that: The outer end of the filter hole (34) of the structural layer is inclined higher than the inner end.

9. The inverted roof insulation layer drainage system according to claim 3, characterized in that: The protective cover (4) has a groove (25) protruding on its top for easy lifting.

10. A method for constructing an inverted roof insulation layer drainage system according to any one of claims 1-9, characterized in that: Includes the following steps: S1. First, the variable diameter reserved pipe (1) is fitted onto the top of the pre-embedded downpipe in the building and connected, and then the structural layer construction begins. S2. According to the construction plan of the inverted roof, first pour the cast-in-place reinforced concrete roof panel (40), pour the variable diameter reserved pipe (1) inside, and extend the top of the variable diameter reserved pipe (1). Then construct the structural slope layer (39) and waterproof layer (38) above it. The waterproof layer (38) needs to extend into the variable diameter reserved pipe (1) to form a downward inward structure of the waterproof layer (38). The inward structure is above the snap-fit ​​block (7) to ensure the waterproofness of the roof layer. Then place the filter hole reserved pipe (2) on the upper part of the variable diameter reserved pipe (1) and connect it. On the waterproof layer (38), construct the extruded polystyrene board insulation layer (37), non-woven fabric isolation layer (36), and fine stone concrete protective layer (35) in sequence. Bury the filter hole reserved pipe (2) in the structural layer. During the construction process, fill and protect the structural layer filter holes (34) opened on the surface of the filter hole reserved pipe (2) through multiple protective plugs (5). S3. After the multi-layer structure has solidified and stabilized, pull the drive unit upward. The drive unit drives multiple sliding plates (13) to move closer to each other. The multiple sliding plates (13) drive the corresponding protective plugs (5) away from the water filter holes (34) of the structure through the extension rod (9). Then, remove the upper mounting plate (21) and the lower mounting plate (12) and leave the filter cover (8) at the top of the water filter hole reserved pipe (2) to complete the construction of the drainage system.

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