Building rainwater pipe energy-saving device and construction method

Abstract

The invention relates to a building rainwater pipe energy-saving device and a construction method. The building rainwater pipe energy-saving device comprises a shell, an inner heat preservation layer, an outer heat preservation layer, a positioning plate, a positioning sleeve, an inner end cover and an outer end cover. At least three groups of positioning plates are arranged on the inner side of the shell, positioning sleeves corresponding to the positioning plates are arranged on the outer side of the end part of the rainwater pipe, the upper parts of the positioning sleeves are opened, and the rainwater pipe is kept in the central position in the shell; the inner thermal insulation layer is arranged between the rainwater pipe and the shell; the outer heat preservation layer is arranged on the outer side of the shell, and the inner wall of the shell is in threaded connection with an inner end cover so that the inner space of the shell can be sealed during construction. Heat exchange between the floor slab and the rainwater pipe is avoided through double-layer heat preservation, the sealing performance and the heat preservation performance are ensured, the rainwater pipe can be centered in the center of the shell by optimizing the structure of the prefabricated part, and the heat preservation effect is improved by combining the heat preservation material and the waterproof gas insulation film wrapping the periphery of the rainwater pipe. Heat exchange between the rainwater pipe and the indoor and floor slabs is avoided, and the energy-saving effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of rainwater pipe and top floor slab construction, and in particular to an energy-saving device for a building rainwater pipe and a construction method. Background Art

[0002] Inverted roof is also called inverted insulation roof. It is a roof with hydrophobic insulation material placed on the waterproof layer. Its structural layers (from top to bottom) are insulation layer, waterproof layer, and structural layer. This type of roof has special requirements for the insulation materials used. Hydrophobic materials with low moisture absorption and strong weather resistance should be used as the insulation layer, such as polystyrene foam board or polyurethane foam board.

[0003] In the prior art, there is an invention patent with patent number 202111648193.8, which discloses an inverted roof or floor rainwater drain for an assembled building and a method of using the same, including a first rainwater pipe and a second rainwater pipe, the upper end of the first rainwater pipe is flush with the slope layer, the lower part of the second rainwater pipe is gapped with the upper part of the first rainwater pipe, and the gap between the second rainwater pipe and the first rainwater pipe is used for laying waterproof membrane, and a water inlet is provided on the pipe body of the second rainwater pipe exposed from the first rainwater pipe; when rainwater penetrates into the roof or floor layer and the insulation layer and reaches the waterproof protective layer, it flows in from the water inlet and flows out of the roof through the first rainwater pipe, thereby avoiding water accumulation in the insulation layer of the roof or floor, corroding the insulation layer and the waterproof protective layer, and the rainwater is discharged in time, reducing the load-bearing burden of the roof or floor.

[0004] The traditional rainwater pipe construction method is relatively simple in the connection between the rainwater pipe and the floor slab, and usually only relies on mortar as the connection medium. This connection method has obvious structural defects, especially the lack of necessary insulation structure to enhance the insulation effect of the connection. Therefore, the connection between the rainwater pipe and the floor slab often has poor insulation performance and is easily affected by external temperature changes, resulting in heat loss or condensation. This will not only reduce the overall thermal insulation performance of the building, but may also cause a series of problems, such as mildew, leakage, etc., posing a threat to the living environment and the durability of the building. Based on this, it is necessary to study an energy-saving device and construction method for building rainwater pipes. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a building rainwater pipe energy-saving device and construction method, which effectively solves the problems of poor thermal insulation performance between the existing rainwater pipe and the floor slab and troublesome connection construction.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a building rainwater pipe energy-saving device, comprising a shell, an inner insulation layer, an outer insulation layer, a positioning plate, a positioning sleeve and an inner end cover; at least three groups of positioning plates are arranged on the inner side of the shell, and a positioning sleeve corresponding to the positioning plate is arranged on the outer side of the end of the rainwater pipe, and the upper part of the positioning sleeve is opened so that the positioning plate can be inserted into the positioning sleeve to keep the rainwater pipe in the inner center position of the shell; the inner insulation layer is arranged between the rainwater pipe and the shell; the outer insulation layer is arranged on the outer side of the shell, and the inner wall of the shell is threadedly connected with the inner end cover to close the internal space of the shell during construction.

[0007] Furthermore, an outer baffle is arranged on the outer side of the shell, so that an outer heat preservation zone is formed between the outer baffle and the shell, and the outer heat preservation layer is arranged in the outer heat preservation zone.

[0008] Furthermore, the bottom of the outer heat preservation zone is closed, the top is open, and an outer end cover is connected to the opening through threads.

[0009] Furthermore, ribs are evenly distributed in the outer heat preservation zone, and a plurality of heat preservation partitions are formed between the ribs.

[0010] Furthermore, an upper ear plate and a lower ear plate are respectively extended outwardly from the upper and lower edges of the outer baffle, and a fixing hole is provided on the lower ear plate.

[0011] Furthermore, the bottom of the positioning sleeve is provided with a limiting plate, and the positioning plate is inserted into the positioning sleeve from the top and is blocked by the limiting plate, so that the rainwater pipe is maintained at a determined position in the inner shell.

[0012] Furthermore, a butt joint is provided on the upper part of the rainwater pipe; a bottom layer, a foundation coil, an insulation layer, an upper coil layer and a surface layer are sequentially provided on the upper part of the floor slab to form a floor insulation decorative layer; a butt joint is installed in the insulation decorative layer, the bottom of the butt joint is connected to the butt joint, and a funnel is provided on the top thereof.

[0013] Furthermore, the butt joint is threadedly connected to the internal thread of the shell, and an upper connecting hole and a lower connecting hole are formed in the center thereof. The upper end of the rainwater pipe is sealed in the lower connecting hole through a sealing ring, and the bottom of the butt joint is sealed in the upper connecting hole through a sealing ring.

[0014] Furthermore, a waterproof and air-proof membrane is arranged at the bottom of the rainwater pipe and the floor slab, and a rubber-plastic thermal insulation material is sheathed on the outer periphery of the rainwater pipe.

[0015] A building rainwater pipe energy-saving construction method, using the above-mentioned building rainwater pipe energy-saving device, comprises the following steps: Step 1: Assemble the shell, the outer insulation layer and the positioning plate as prefabricated parts, and connect the inner end cover in the middle of the shell; Step 2: Fix the prefabricated parts on the template according to the construction layout position; Step 3: pour concrete on the formwork to form a floor slab, remove the formwork after solidification, reserve the prefabricated part in the floor slab, remove the inner end cover, and form a pipe hole in the middle of the prefabricated part; Step 4: Align the positioning sleeve of the rainwater pipe with the positioning plate to position the rainwater pipe in the middle area of ​​the shell; Step 5: Connect a joint at the upper end of the rainwater pipe, the outer side of the joint is higher than the floor slab, and fill the inner insulation material between the rainwater pipe and the shell. Set a waterproof and air-tight membrane around the connection at the lower part of the rainwater pipe floor slab, and set a rubber-plastic insulation material on the outer side of the rainwater pipe. Then, the top layer construction can be carried out on the bottom of the floor slab. Step 6: Clean the floor surface, and then apply the leveling layer, cold primer and foundation roll material from bottom to top; Step 7, pre-assemble the butt-joint pipe in the insulation layer, arrange the insulation layer on the base coil, and seal and assemble the butt-joint pipe and the butt joint; Step eight, construct the surface roll material layer, protective film, surface layer and protective layer on the insulation layer in sequence.

[0016] The beneficial effects of the above technical scheme are as follows: for the connection structure between the floor slab and the rainwater pipe, during the pouring process of the floor slab, the present invention first reserves a prefabricated part on the floor slab and forms a hole structure. The prefabricated part has an outer insulation layer on the outside, thereby forming an outer insulation structure between the floor slab and the hole; at the same time, a positioning plate is provided on the inner side of the shell, and at least three positioning plates are arranged. By utilizing the mutual constraints, the positioning sleeves are arranged on the rainwater pipe, so that the rainwater pipe utilizes the fitting relationship between the positioning sleeves and the positioning plates to realize the centering of the rainwater pipe at the center of the shell, and the positioning is accurate; at the same time, a butt joint is connected to the upper end of the rainwater pipe, and the outer side of the butt joint is higher than the floor slab to facilitate the leveling construction above the floor slab. At the same time, an inner insulation material is filled between the rainwater pipe and the shell to form an inner insulation layer. The inner insulation layer and the outer insulation layer jointly participate in the insulation work between the rainwater pipe and the floor slab.

[0017] In order to ensure the thermal insulation and water sealing effect, a waterproof and air-tight membrane is arranged around the lower connection of the rainwater pipe to the floor, and a rubber-plastic insulation material is mounted on the outside of the rainwater pipe. The connection between the floor, prefabricated parts and the rainwater pipe is connected as a whole through the waterproof and air-tight membrane to ensure the water sealing effect here. At the same time, the insulation material is coated on the outside of the rainwater pipe to avoid heat exchange between the rainwater pipe and the indoor environment.

[0018] At the same time, the present invention provides a docking joint at the connection between the rainwater pipe and the docking pipe, the docking joint is threadedly connected in the shell body to form a docking base, a docking hole is arranged at the center of the docking joint, and an upper connecting hole and a lower connecting hole are respectively arranged at the upper and lower parts of the docking hole. After the docking joint forms a limit, the upper end of the rainwater pipe is sealed into the lower connecting hole from the lower part, and the corresponding sealing sleeve of the docking pipe is sealed into the lower connecting hole to realize the splicing of the docking pipe and the rainwater pipe.

[0019] Therefore, the present invention has a novel structure. By optimizing and improving the structure between the rainwater pipe and the floor slab, an inner insulation layer and an outer insulation layer are formed between the rainwater pipe and the floor slab. The double-layer insulation avoids heat exchange between the floor slab and the rainwater pipe, thereby ensuring its sealing and thermal insulation properties. In addition, by optimizing the prefabricated structure, the rainwater pipe can be centered at the center of the shell, and the structure is stable and the positioning is precise. The construction steps are simplified, and the construction efficiency is improved. Combined with the insulation material and the waterproof and air-tight film coated on the outer periphery of the rainwater pipe, heat exchange between the rainwater pipe and the interior and the floor slab is avoided, thereby achieving energy-saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the implementation structure of the present invention; Figure 2 It is a schematic diagram of the implementation structure of the energy-saving device; Figure 3 It is a schematic diagram of the internal structure of the energy-saving device; Figure 4 It is a schematic diagram of the main structure of the energy-saving device; Figure 5 It is a schematic diagram of the structure of the energy-saving device from a top view; Figure 6 It is an internal cross-sectional view of the energy-saving device; Figure 7 It is a schematic diagram of the implementation structure of the joint; Figure 8 Schematic diagram of the construction structure of the thermal insulation decorative layer.

[0021] Figure markings: 1-shell, 2-positioning plate, 3-rainwater pipe, 31-rubber-plastic insulation material, 4-positioning sleeve, 5-positioning cavity, 6-outer baffle, 7-rib plate, 8-inner end cover, 9-outer end cover, 10-upper ear plate, 11-lower ear plate, 12-fixing hole, 13-inner insulation area, 131-inner insulation layer, 14-outer insulation area, 141-outer insulation layer, 15-butt joint, 16-upper connection hole, 17-lower connection hole, 18-top layer, 19-floor, 20-leveling layer, 21-cold primer, 22-foundation membrane, 23-insulation layer, 24-3.0 thick PE surface glass fiber modified asphalt self-adhesive waterproof membrane, 25-4.0 thick shale surface glass fiber reinforced polyester modified asphalt waterproof membrane, 26-protective film, 27-butt joint, 28-funnel, 29-waterproof air barrier membrane. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Example 1. This example aims to provide an energy-saving device for a rainwater pipe in a building, which is mainly used to illustrate the connection structure between the rainwater pipe and the top floor. The current construction structure has deficiencies in thermal insulation and waterproof sealing, which causes the rainwater pipe to leak easily near the top floor, and heat exchange between the environment inside the pipe and the floor, resulting in water stains on the closed periphery and cold air entering the indoor environment. This example optimizes and transforms this node and provides an energy-saving device for a rainwater pipe in a building.

[0023] like Figure 1 As shown in the figure, a building rainwater pipe energy-saving device includes a shell 1, an inner insulation layer 131, an outer insulation layer 141, a positioning plate 2, a positioning sleeve 4, an inner end cover 8 and an outer end cover 9; as an implementation mode, at least three groups of positioning plates 2 are arranged on the inner side of the shell 1 of this embodiment, and the inner side of the specific shell 1 is a circular structure, and three groups of positioning plates 2 are fixed on the inner wall of the circular shell 1, and the three groups of positioning plates 2 have a light structure and save materials.

[0024] A positioning sleeve 4 corresponding to the positioning plate 2 is arranged on the outer side of the end of the rainwater pipe 3, and the upper part of the positioning sleeve 4 is opened so that the positioning plate 2 can be inserted into the positioning sleeve 4 to keep the rainwater pipe 3 at the inner center position of the shell 1; the positioning sleeve 4 is fixed on the outer periphery of the upper end of the rainwater pipe 3, and the upper part and the side of the positioning sleeve 4 are both open, and there is a positioning cavity 5 matched with the thickness of the positioning plate inside it, so that when the rainwater pipe 3 enters the shell 1 from bottom to top, the positioning plate 2 can be adapted and mounted in the positioning sleeve 4, and due to the adaptation and mutual constraint of the three groups of positioning plates 2 and the positioning sleeve 4, the rainwater pipe 3 can be restricted to the central area of ​​the shell 1.

[0025] The inner insulation layer 131 is arranged between the rainwater pipe 3 and the shell 1; the rainwater pipe 3 is positioned at the center of the shell 1, and the positioning sleeve 4 and the positioning plate 2 are adapted to form three partitions, and each partition is filled with insulation material, such as polyurethane foam material, so as to stabilize the connection between the rainwater pipe 3 and the shell 1, and at the same time form an inner insulation layer 131 between the two.

[0026] During implementation, the positioning sleeve 4 has a positioning cavity 5, the length of the positioning cavity 5 is longer than the positioning plate 2, and the positioning plate 2 is arranged toward the center of the circular shell 1, and the positioning sleeve 4 is fixed on the outer periphery of the rainwater pipe 3 toward its center, so as to adapt to different diameters of the rainwater pipe 3 (here it is necessary to ensure the adaptability of the positioning sleeve 4 and the positioning plate 2, and at the same time, the positioning sleeve 4 and the positioning plate 2 are both arranged toward the center of the circle and have equal spacing).

[0027] In this embodiment, the outer insulation layer 141 can be wrapped around the outer side of the shell 1, that is, pre-connected to the outer side of the shell 1, and the shell 1 is fixedly connected to the template by bolts during construction, and then the floor slab is poured, so that the outer insulation layer 141 is formed between the shell 1 and the floor slab. In order to prevent concrete from entering the inside of the shell 1 during pouring, an inner end cover 8 is threadedly connected to the inner wall of the shell 1 to close the internal space of the shell 1 during construction.

[0028] Regarding the connection around the rainwater pipe 3, the present embodiment is provided with a docking joint 15 on the upper part of the rainwater pipe 3; a bottom layer, a foundation coil, an insulation layer, an upper coil layer and a surface layer are sequentially arranged on the upper part of the floor 19 to form a thermal insulation and decorative layer of the floor 19; a docking pipe is installed in the thermal insulation and decorative layer, the bottom of the docking pipe 27 is connected to the docking joint 15, and a funnel is provided on the top; a waterproof and air-proof membrane 29 is provided at the bottom of the rainwater pipe 3 and the floor 19, and a rubber-plastic thermal insulation material 31 is installed on the outer periphery of the rainwater pipe 3.

[0029] Based on the above implementation structure, this embodiment also provides a building rainwater pipe 3 energy-saving construction method, using the above building rainwater pipe 3 energy-saving device, including the following steps: Step 1: Assemble the shell 1, the outer insulation layer 141 and the positioning plate 2 as prefabricated parts, and connect the inner end cover 8 in the middle of the shell 1; Step 2: Fix the prefabricated parts on the template according to the construction layout position; Step 3, pouring concrete on the template to form the floor 19, removing the template after solidification, leaving the prefabricated part in the floor 19, removing the inner end cover 8, and forming a pipe hole in the middle of the prefabricated part; Step 4: Align the positioning sleeve 4 of the rainwater pipe 3 with the positioning plate 2 to position the rainwater pipe 3 in the middle area of ​​the housing 1; Step 5: Connect the joint 15 to the upper end of the rainwater pipe 3, the outer side of the joint 15 is higher than the floor 19, and fill the inner insulation material between the rainwater pipe 3 and the shell 1, set a waterproof air-proof membrane 29 around the connection of the lower part of the rainwater pipe 3 to the floor 19, and cover the outer side of the rainwater pipe 3 with a rubber-plastic insulation material 31, and then the top layer 18 can be constructed on the bottom of the floor 19; Step six, clean the surface of the floor 19, and then construct the leveling layer 20, cold primer 21 and base roll 22 on the floor 19 from bottom to top; during implementation, use mortar to construct the leveling layer, and then construct cold primer 21 on the surface of the leveling layer 20. The base roll 22 uses a 1.2 thick alkali-resistant aluminum foil surface layer glass fiber self-adhesive modified asphalt vapor barrier roll (-20°C).

[0030] Step seven, pre-assemble the butt joint 27 in the insulation layer 23, arrange the insulation layer 23 on the base roll, and seal and assemble the butt joint 27 with the butt joint 15; the base roll includes a 3.0 thick PE surface glass fiber tire modified asphalt self-adhesive waterproof roll 24 and a 4.0 thick shale surface glass fiber reinforced polyester tire modified asphalt waterproof roll 25 laid in sequence from bottom to top; wherein the 3.0 thick PE surface glass fiber tire modified asphalt self-adhesive waterproof roll (-20°C) is laid on the insulation layer, and the insulation layer is a double-layer insulation, that is, a 200 thick extruded polystyrene board insulation layer; Step eight, construct the surface coiled material layer, protective film 26, surface layer and protective layer on the insulation layer in sequence, the protective film 26 is a layer of 0.4 thick polyethylene film, and finally construct the protective layer and surface layer according to the construction requirements.

[0031] In the pouring process of the floor 19 of this embodiment, the prefabricated parts are first reserved on the floor 19 to form an opening structure. The prefabricated parts have an outer insulation layer 141 on the outside, so that an outer insulation structure is formed between the floor 19 and the opening. At the same time, a positioning plate 2 is provided on the inner side of the shell 1. At least three positioning plates 2 are provided. By utilizing the mutual constraints, the positioning sleeve 4 is arranged on the rainwater pipe 3, so that the rainwater pipe 3 utilizes the fitting relationship between the positioning sleeve 4 and the positioning plate 2 to realize the centering of the rainwater pipe 3 at the center of the shell 1, and the position positioning is accurate. At the same time, the upper end of the rainwater pipe 3 is connected The butt joint 15 has its outer side higher than the floor 19 to facilitate leveling construction above the floor 19. At the same time, inner insulation material is filled between the rainwater pipe 3 and the shell 1 to form an inner insulation layer 131. The inner insulation layer 131 and the outer insulation layer 141 jointly participate in the insulation work between the rainwater pipe 3 and the floor 19 to avoid heat exchange between the rainwater pipe 3 and the floor 19, simplifying the construction steps and improving the construction efficiency. Combined with the insulation material and waterproof air-proof membrane wrapped around the outer periphery of the rainwater pipe 3, heat exchange between the rainwater pipe 3 and the interior and the floor 19 is avoided, which has an energy-saving effect.

[0032] Embodiment 2: This embodiment further illustrates the structure of the housing 1.

[0033] In this embodiment, an outer baffle plate 6 is provided on the outer side of the shell 1, so that an outer insulation zone 14 is formed between the outer baffle plate 6 and the shell 1, and an outer insulation layer 141 is provided in the outer insulation zone 14. The bottom of the outer insulation zone 14 is closed, the upper part is open, and an outer end cover 9 is connected to the opening by threads. In this embodiment, the outer insulation layer 141 is formed in a closed environment, that is, this embodiment is a double-layer structure, that is, the shell 1 is the inner layer, the outer layer is the outer baffle plate 6, the inner layer forms the inner insulation zone 13 and the rainwater pipe 3 installation area, the inner insulation zone 13 is filled with inner insulation material, and the outer insulation layer 141 is formed between the inner layer and the outer layer. This structure can pre-form the outer insulation layer 141 in a preset device, the structure can be prefabricated in batches, and the structural stability is good.

[0034] The outer insulation zone 14 is evenly distributed with ribs 7, and a plurality of insulation partitions are formed between the ribs 7. In this embodiment, the structural stability of the outer baffle 6 can be enhanced by the rib 7 structure. In this embodiment, the ribs 7 correspond to the positioning plates 2. Of course, the ribs 7 and the positioning plates 2 can also be staggered, such as the ribs 7 correspond to the middle of the inner insulation layer 131, and the positioning plates 2 correspond to the middle of the outer insulation layer 141. The insulation layers are staggered to improve the overall insulation effect.

[0035] In order to fix the shell 1, in this embodiment, the outer insulation layer 141 is arranged on the outside of the shell 1, and the upper and lower edges of the outer baffle plate 6 are respectively extended outward to provide an upper ear plate 10 and a lower ear plate 11, and the lower ear plate 11 is provided with a fixing hole 12. During construction, the lower ear plate 11 and the upper ear plate 10 are respectively attached to the templates on both sides, and then the templates are combined on the templates, and after the pouring is completed, they are reserved on the floor slab 19.

[0036] Embodiment 3: This embodiment further illustrates the implementation structure of the butt joint 15.

[0037] In this embodiment, the docking joint 15 is threadedly connected to the internal thread of the shell 1 to ensure the stable installation of the docking joint 15. At the same time, an upper connecting hole 16 and a lower connecting hole 17 are formed in the center hole of the docking joint 15. The lower connecting hole 16 and the upper connecting hole 17 are both provided with sealing grooves. Corresponding sealing rings are arranged at the ends of the rainwater pipe 3 and the docking tube 27. The sealing rings and the sealing grooves are correspondingly connected to each other. The upper end of the rainwater pipe 3 is sealedly sleeved in the lower connecting hole through the sealing ring, and the bottom of the docking tube 27 is sealedly sleeved in the upper connecting hole through the sealing ring.

[0038] During implementation, since the waterproof roof of the top layer needs to be treated with slope water, the length of the butt joint pipe 27 at each node is different. In order to ensure the butt joint effect, this embodiment uses the bottom of the insulation layer as a reference surface, cuts the butt joint pipe 27 to a corresponding length, and extends it to a corresponding length relative to the bottom of the insulation layer to ensure the matching connection between the sealing groove and the sealing ring here.

[0039] At the same time, in order to ensure that the sealing ring of the rainwater pipe 3 corresponds to the sealing groove, a limiting plate is provided at the bottom of the positioning sleeve 4. The positioning plate 2 is inserted into the positioning sleeve 4 from the top and is blocked by the limiting plate, so that the rainwater pipe 3 is maintained in a determined position in the inner shell 1. When the position is determined, the sealing ring of the rainwater pipe 3 corresponds to the sealing groove of the docking joint 15.

[0040] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. The basic concept of the present invention is to form an inner insulation layer and an outer insulation layer between the rainwater pipe and the floor slab by optimizing and improving the structure between the rainwater pipe and the floor slab. The double-layer insulation avoids heat exchange between the floor slab and the rainwater pipe, ensuring its sealing and thermal insulation. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A building rainwater pipe energy-saving device, characterized in that: It includes a shell, an inner insulation layer, an outer insulation layer, a positioning plate, a positioning sleeve and an inner end cover; at least three groups of positioning plates are arranged on the inner side of the shell, and a positioning sleeve corresponding to the positioning plate is arranged on the outer side of the end of the rainwater pipe, and the upper part of the positioning sleeve is opened so that the positioning plate can be inserted into the positioning sleeve to keep the rainwater pipe at the inner center position of the shell; the inner insulation layer is arranged between the rainwater pipe and the shell; the outer insulation layer is arranged on the outer side of the shell, and the inner wall of the shell is threadedly connected with the inner end cover to close the internal space of the shell during construction.

2. The building rainwater pipe energy-saving device according to claim 1, characterized in that: An outer baffle is arranged on the outer side of the shell, so that an outer heat preservation zone is formed between the outer baffle and the shell, and the outer heat preservation layer is arranged in the outer heat preservation zone.

3. The building rainwater pipe energy-saving device according to claim 2 is characterized in that: The bottom of the outer heat preservation zone is closed, the upper part is open, and an outer end cover is connected to the opening through threads.

4. The building rainwater pipe energy-saving device according to claim 2, characterized in that: The outer heat preservation zone is evenly provided with ribs, and a plurality of heat preservation partitions are formed between the ribs.

5. The building rainwater pipe energy-saving device according to claim 2 is characterized in that: An upper ear plate and a lower ear plate are respectively extended outwardly from the upper and lower edges of the outer baffle, and a fixing hole is arranged on the lower ear plate.

6. The building rainwater pipe energy-saving device according to any one of claims 1 to 5, characterized in that: The bottom of the positioning sleeve is provided with a limiting plate, the positioning plate is inserted into the positioning sleeve from the top and is blocked by the limiting plate, so that the rainwater pipe is kept at a determined position of the inner shell.

7. The building rainwater pipe energy-saving device according to any one of claims 1 to 5, characterized in that: A butt joint is arranged on the upper part of the rainwater pipe; a bottom layer, a foundation coil, an insulation layer, an upper coil layer and a surface layer are arranged in sequence on the upper part of the floor slab to form a floor slab insulation decoration layer; a butt joint is installed in the insulation decoration layer, the bottom of the butt joint is connected to the butt joint, and a funnel is arranged on the top of the butt joint.

8. The building rainwater pipe energy-saving device according to any one of claims 1 to 5, characterized in that: The butt joint is threadedly connected to the internal thread of the shell, and an upper connecting hole and a lower connecting hole are formed in the center thereof. The upper end of the rainwater pipe is sealed in the lower connecting hole through a sealing ring, and the bottom of the butt joint is sealed in the upper connecting hole through a sealing ring.

9. The building rainwater pipe energy-saving device according to any one of claims 1 to 5, characterized in that: A waterproof and air-proof membrane is arranged at the bottom of the rainwater pipe and the floor slab, and a rubber-plastic thermal insulation material is sheathed on the outer periphery of the rainwater pipe.

10. A building rainwater pipe energy-saving construction method, using the building rainwater pipe energy-saving device according to claim 1, characterized in that: The steps include: Step 1: Assemble the shell, the outer insulation layer and the positioning plate as prefabricated parts, and connect the inner end cover in the middle of the shell; Step 2: Fix the prefabricated parts on the template according to the construction layout position; Step 3: pour concrete on the formwork to form a floor slab, remove the formwork after solidification, reserve the prefabricated part in the floor slab, remove the inner end cover, and form a pipe hole in the middle of the prefabricated part; Step 4: Align the positioning sleeve of the rainwater pipe with the positioning plate to position the rainwater pipe in the middle area of ​​the shell; Step 5: Connect a joint at the upper end of the rainwater pipe, the outer side of the joint is higher than the floor slab, and fill the inner insulation material between the rainwater pipe and the shell. Set a waterproof and air-tight membrane around the connection at the lower part of the rainwater pipe floor slab, and set a rubber-plastic insulation material on the outer side of the rainwater pipe. Then, the top layer construction can be carried out on the bottom of the floor slab. Step 6: Clean the floor surface, and then apply the leveling layer, cold primer and foundation roll material from bottom to top; Step 7, pre-assemble the butt-joint pipe in the insulation layer, arrange the insulation layer on the base coil, and seal and assemble the butt-joint pipe and the butt joint; Step eight, construct the surface roll material layer, protective film, surface layer and protective layer on the insulation layer in sequence.

Images