Flat roof multifunctional drainage and exhaust combined device and construction method

Abstract

The application discloses a kind of flat roof multifunctional drainage exhaust combination device and construction method, device includes at least one drainage exhaust node component, the node component is formed according to different shape of different position of roof, and is fixed on the key control point of roof layer or roof panel;The node component includes pipe main body, the inner chamber of the pipe main body is equipped with inner baffle, the inner chamber of pipe is separated into independent drainage passage located at the bottom of pipe and exhaust passage located at the both sides of drainage passage by the inner baffle;The top of the pipe is equipped with the opening hole communicated with drainage passage, and the both sides of the pipe are equipped with the opening hole communicated with exhaust passage;The node component further includes two pieces of compartment joint side plate fixedly connected with the top surface center of pipe main body, the compartment joint side plate is arranged at intervals, and forms compartment joint.The application integrates drainage and exhaust functions, has compartment joint and flatness control functions, simplifies construction process, and saves labor cost and construction time.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building engineering, and more particularly, relates to a multifunctional drainage and exhaust combination device for flat roof and a construction method. BACKGROUND

[0002] The inverted roof is a traditional roof insulation method, which is characterized by locating the insulation layer below the waterproof layer. This roof construction method has relatively low requirements for insulation materials, and commonly used insulation materials include aerated concrete, expanded perlite, mineral wool, etc. These materials are relatively inexpensive. However, these materials are prone to water absorption, and once they absorb water, their insulation and heat insulation performance will be greatly reduced, so a waterproof layer is needed to protect the insulation layer from water intrusion. The disadvantages of the inverted roof include a relatively complex construction procedure, a relatively short service life, and a high risk of roof leakage. Since the waterproof material is exposed on the uppermost layer, it is easily affected by temperature changes and ultraviolet radiation, leading to aging and cracking, which affects the waterproof effect. In addition, in order to remove the moisture in the insulation layer and the leveling layer, and to prevent water vapor from causing the waterproof layer to bulge, a large number of exhaust holes are usually provided on the roof, which not only affects the appearance and use of the roof, but also may damage the integrity of the waterproof layer.

[0003] At present, the inverted roof is widely used, especially in hot summer and cold winter areas, cold and severe cold areas, where the protection of the insulation layer is required. The insulation layer is usually placed below the waterproof layer. Since the insulation layer is in a sealed space as a whole, a large amount of water vapor will be generated when the temperature rises, and an exhaust system must be used to exhaust the gas. At the same time, when the roof area is large, the flatness control and crack control are the construction focus of the roof engineering, in addition, the surface runoff control under the condition of heavy rain also has a great influence on the later use function.

[0004] There are three methods in the prior art, (1) by connecting the thermal insulation layer, the exhaust hole provided on the modular waterproof plate and the exhaust passage provided on the module connection assembly in communication, the gas in the thermal insulation layer is exhausted. The problem that the existing roofing modular waterproof assembly does not have an exhaust function is solved. However, it does not have the flatness control and drainage function of large-area roof. (2) By cooperating with the concrete layer, the protrusion, the thermal insulation layer, the first exhaust pipe, the leveling layer, the waterproof layer, the waterproof protection layer, the second exhaust pipe, the elbow and the water stop steel plate, the waterproof layer extends to the side surface of the protrusion, which can avoid the situation that the position of the exhaust pipe is leaked after installation. However, in a large-area roof, if only the side surface vent pipe is used for exhaust, the exhaust effect will be significantly reduced, which is easy to cause the waterproof layer to bulge or damage. (3) By vertically connecting the exhaust pipe with the exhaust passage, the problem of difficult roof slope and easy damage to the exhaust pipe is solved. Not only can the exhaust pipe be avoided from being damaged, but also the construction effect of the roof can be improved. However, the structure does not have a drainage function, and effective treatment measures are not proposed for the large-area roof grid joint, which still needs to be cut later and is easy to crack. SUMMARY

[0005] In view of the problems that the ordinary exhaust duct of the large-area upright roof engineering is easy to be blocked by cement mortar, the surface runoff is large under heavy rain conditions, the roof fine aggregate concrete protection layer is easy to crack, and the flatness control is difficult, the present application provides a flat roof multifunctional drainage and exhaust combination device, which is composed of drainage and exhaust node assemblies and can be quickly assembled on site to adapt to fine aggregate concrete grids of different sizes. The main body of the pipeline is provided with a drainage duct between the exhaust ducts, the drainage duct is completely isolated from the two side exhaust ducts, but is in communication with the upper grid joint pipeline, the grid joint is filled with water permeable concrete as a rainwater infiltration channel, and the infiltrated rainwater directly enters the lower drainage duct and is then discharged into the roof rainwater ditch.

[0006] The present application provides a flat roof multifunctional drainage and exhaust combination device, which comprises at least one drainage and exhaust node assembly, the drainage and exhaust node assemblies are formed in different shapes according to different positions of the roof, and are fixed to key control points (boundary T-shaped points, L-shaped corner points and cross points) on the roof slope layer or the roof panel; the drainage and exhaust node assemblies are combined and assembled with each other to adapt to fine aggregate concrete grids of different sizes;

[0007] The drainage and exhaust node assembly comprises a pipeline main body, an inner partition plate is arranged in the inner cavity of the pipeline main body, the inner partition plate divides the inner cavity of the pipeline into a drainage passage at the bottom of the pipeline and exhaust passages at both sides of the drainage passage; the top of the pipeline is provided with an opening in communication with the drainage passage, and the two sides of the pipeline are provided with openings in communication with the exhaust passages;

[0008] The drainage and exhaust node assembly further comprises two partition slot side plates arranged on the central upper surface of the top of the pipe body, which are spaced apart and fixedly connected with the top of the pipe body, and a partition slot is formed between the two partition slot side plates, and the drainage and exhaust channel formed by the lower part and the partition slot is in the same direction.

[0009] Specifically, the pipe body is a long pipe with a rectangular end face, which is fixedly connected by a bottom plate, two perforated side plates and a perforated top plate.

[0010] Specifically, the pipe body is a T-shaped pipe with a rectangular end face (arranged in a T-shaped manner at the T-shaped point of the wall boundary), and the drainage channel is T-shaped.

[0011] Specifically, the pipe body is an L-shaped pipe with a rectangular end face (arranged in an L-shaped manner at the L-shaped corner point of the wall corner), and the drainage channel is L-shaped.

[0012] Specifically, the pipe body is a cross-shaped pipe with a rectangular end face (arranged in a cross-shaped manner at the cross-shaped intersection of the roof), and the drainage channel is cross-shaped.

[0013] Further, the cross-shaped pipe body further comprises an air permeable pipe, which is a vertically arranged tubular structure, the bottom of the air permeable pipe is fixed to the center of the top of the cross-shaped pipe through a reducing connection assembly, the upper part of the air permeable pipe is forked and curved to form two downwardly open air outlets, and the upper surface of the pipe body is provided with an opening hole penetrating through the exhaust channel and the air permeable pipe.

[0014] Further, the outer side of the lower part of the partition slot side plate is provided with a roll material fixing batten, the upper side edge of the roll material fixing batten is fixedly connected with the partition slot side plate, the lower part is outwardly tilted to form an arc-shaped curved part, and a fixed bolt is arranged on the arc-shaped curved part at certain intervals for fixing the roll material fixing batten.

[0015] Further, the bottom of the pipe body is provided with a fixing gasket along the left and right sides, the fixing gaskets are arranged at certain intervals along the length direction of the bottom of the pipe body, and a shot pin is used to fix the drainage and exhaust node assembly to the roof slope layer or roof panel through the fixing gaskets.

[0016] Further, the exhaust channel is filled with large-gap open-graded hard plastic particles, so that the pipe can resist compression and deformation.

[0017] The application also provides a construction method of the flat roof multifunctional drainage and exhaust combined device, and the specific steps are as follows,

[0018] S100: Construction preparation: Ensure that the construction site has the necessary construction conditions, including material storage area, tool and equipment placement area, etc.; check whether the water supply and power supply pipelines meet the construction needs and ensure safety; investigate the surrounding environment to understand the factors that may affect construction, such as weather, traffic, etc.; according to the requirements of building design, complete the construction of the roof slope layer, ensure smooth drainage; conduct detailed technical briefing and safety education to construction personnel, ensure construction quality and safety;

[0019] S200: Measurement and line laying: According to the design drawings and specification requirements, determine the size and position of the sub-grid joint; carry out detailed layout design on the building plan to ensure the reasonable layout of the sub-grid joint; field line laying to ensure the accuracy of the control points, and key control points cross intersection, L-type corner points, boundary T-type points are marked with paint and take reliable protection measures to prevent accidental damage during construction;

[0020] S300: Node component assembly: Place the "X" type node piece, "T" type node piece and "L" type node piece according to the paint positioning points marked by the line laying, adjust the elevation of the components using a level or other tools to ensure flatness, and after adjustment, use a nail gun to fix each component on the slope layer or roof panel;

[0021] S400: Ordinary piece assembly: Place the long tube ordinary piece according to the fixed node piece and its positioning ink line, adjust the level after placing to ensure the flatness and sealing of the connection, and fix each component on the slope layer or roof panel in time after leveling using a nail gun;

[0022] S500: Insulation layer paving: Pave the insulation board in each grid respectively, and ensure that the gaps of the insulation board are filled with special materials to achieve good insulation effect;

[0023] S600: Leveling layer construction: Construct the cement mortar leveling layer in each grid respectively, and consider the drainage slope during the construction of the leveling layer to ensure that the rainwater can be smoothly drained;

[0024] S700: Waterproof layer construction: According to the design requirements and specifications, carry out waterproof material paving, cut the material at the sub-grid joint, and then insert the end into the material fixing batten, and then tighten the fixing bolt, and then seal with sealing paste to ensure the waterproof effect;

[0025] S800: Protection layer construction: Use the side plate of the sub-grid joint as a side form, use the skip method to construct the fine stone concrete protection layer, and use the top of the side plate of the sub-grid joint as a reference surface to directly control the elevation of the finished surface of each bin of fine stone concrete.

[0026] Overall, compared with the prior art, the above technical solutions conceived by the present application can achieve the following beneficial effects:

[0027] 1. The flat roof multifunctional drainage and exhaust combination device of the present application comprises a pipe body, a drainage channel and an exhaust channel, wherein the drainage channel and the exhaust channel are separated from each other by an inner partition plate arranged inside the pipe body and dense perforations arranged on the top and both sides of the pipe body, so that gas and moisture can flow in different channels respectively, which can reduce the accumulation of moisture in the insulation layer and allow the gas to be smoothly discharged, thereby improving the efficiency of drainage and exhaust, realizing the integration of exhaust and drainage, and improving the overall performance of the roof through reasonable layout and structural design.

[0028] 2. The flat roof multifunctional drainage and exhaust combination device of the present application comprises a pipe body, a drainage channel and an exhaust channel, wherein the drainage channel and the exhaust channel are separated from each other by an inner partition plate arranged inside the pipe body and dense perforations arranged on the top and both sides of the pipe body, so that gas and moisture can flow in different channels respectively, which can reduce the accumulation of moisture in the insulation layer and allow the gas to be smoothly discharged, thereby improving the efficiency of drainage and exhaust, realizing the integration of exhaust and drainage, and improving the overall performance of the roof through reasonable layout and structural design.

[0029] 3. The flat roof multifunctional drainage and exhaust combination device of the present application comprises a drainage and exhaust node assembly, which can be quickly assembled on site and adapt to different sizes of fine aggregate concrete grid, and can more conveniently pave insulation boards in the grid, thereby improving the construction speed and making maintenance and replacement of parts easier.

[0030] 4. The vertical air pipe provided by the flat roof multifunctional drainage and exhaust combination device further optimizes the exhaust performance. The vertical air pipe can provide a direct channel for the internal hot gas and moisture to be discharged more smoothly, thereby reducing the accumulation of moisture in the roof structure, avoiding possible damage caused by condensation, promoting the natural flow of air, and improving the exhaust efficiency.

[0031] 5. The pipe body provided by the flat roof multifunctional drainage and exhaust combination device adopts a pressing strip device outside the lower part of the grid joint side plate, which can fix the waterproof coiled material and avoid the problem of weak waterproofing at the coiled material closing part. The use of bolts for mechanical fixation of the coiled material closing part can improve the waterproof sealing effect of the coiled material closing part.

[0032] 6. The top of the grid joint side plate provided by the flat roof multifunctional drainage and exhaust combination device can serve as a reference surface for fine aggregate concrete construction, effectively controlling the finished surface of large-area concrete pouring, and the formed fine aggregate concrete protective layer is regularly divided by the grid joint, which solves the problems of large dust during post-construction joint cutting and easy cracking due to untimely joint cutting, and improves the flatness and appearance quality of the fine aggregate concrete protective layer. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 Figure 1 is a top view of the drainage and exhaust node assembly of the present application;

[0034] Figure 2 Cross-sectional view of a drainage and exhaust node assembly for an embodiment of the invention;

[0035] Figure 3 Top view of a T-shaped pipe of a drainage and exhaust node assembly for an embodiment of the invention;

[0036] Figure 4 Top view of an L-shaped pipe of a drainage and exhaust node assembly for an embodiment of the invention;

[0037] Figure 5 Top view of a cross-shaped pipe of a drainage and exhaust node assembly for an embodiment of the invention;

[0038] Figure 6 Side view of a cross-shaped pipe of a drainage and exhaust node assembly for an embodiment of the invention;

[0039] Figure 7 Flow chart of a construction method for a flat roof multifunctional drainage and exhaust combination device for an embodiment of the invention.

[0040] In all the drawings, the same reference signs denote the same technical features, specifically: 1 - fixed gasket; 2 - shot pin; 3 - inner partition; 4 - roll material fixing batten; 5 - fixed bolt; 6 - perforated top plate; 7 - perforated side plate; 8 - compartment joint side plate; 9 - bottom plate; 10 - reducing connection assembly; 11 - air permeable pipe. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention clearer and more apparent, the present invention will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] The present invention provides a flat roof multifunctional drainage and exhaust combination device, which is assembled by a series of drainage and exhaust node assemblies, is used to be installed on a roof slope layer or a roof panel, and the drainage and exhaust node assemblies form different shapes according to different positions of the roof, including T-shaped drainage and exhaust node assemblies, L-shaped drainage and exhaust node assemblies, cross-shaped drainage and exhaust node assemblies, etc., which are respectively fixed on key control points (boundary T-shaped points, L-shaped corner points, cross-shaped intersection points) on the roof slope layer or the roof panel, and the drainage and exhaust node assemblies are assembled with each other to adapt to different sizes of fine stone concrete compartments.

[0043] The drainage and exhaust node assembly comprises a pipe body, an inner partition plate 3 is arranged in the inner cavity of the pipe body, and the inner cavity of the pipe is divided into a drainage channel at the bottom of the pipe and exhaust channels at both sides of the drainage channel; the top of the pipe is provided with an opening communicating with the drainage channel, and the two sides of the pipe are provided with openings communicating with the exhaust channels;

[0044] The drainage and exhaust node assembly further comprises two partition slot side plates 8 arranged on the central upper surface of the top of the pipe body, which are arranged in a spaced manner and fixedly connected with the top of the pipe body, and a partition slot is formed between the two partition slot side plates 8, which is in the same direction as the drainage and exhaust channels formed by the lower part.

[0045] As shown in Figure 1 The pipe body of the drainage and exhaust node assembly is a long pipe with a rectangular end face, which is fixedly connected with a bottom plate 9, two perforated side plates 7 and a perforated top plate 6 to form a rectangular space extending in the length direction; two inner partition plates 3 symmetrically installed in the shape of an "eight" are arranged inside the long pipe, the upper edges of which are fixedly connected with the perforated top plate 6, and the lower edges of which are fixedly connected with the bottom plate 9, so as to divide the rectangular space of the long pipe into two symmetric exhaust channels and a drainage channel below;

[0046] The top of the long pipe comprises two partition slot side plates 8 arranged in a spaced manner on the central upper surface of the perforated top plate 6 and fixedly connected with the perforated top plate 6, and a partition slot is formed between the two partition slot side plates 8, which is in the same direction as the channels formed by the lower part; the lower edge of the inner partition plate 3 is fixedly connected with the perforated side plate 7 at the connection between the perforated side plate 7 and the bottom plate 9.

[0047] As shown in Figure 2 The perforated top plate 6 is provided with dense perforations within the range clamped by the two partition slot side plates 8, which forms a drainage channel with the two partition plates and the bottom plate, and rainwater flows into the partition slot and enters the drainage channel below through the perforations of the perforated top plate.

[0048] The perforated side plate 7 is provided with uniform perforations, which forms an exhaust channel with the inner partition plate 3 and the non-perforated area of the perforated top plate 6; according to the principle of natural convection, when the roof is heated, the internal air is heated, the density is reduced, and an upward hot air flow is formed, which is discharged through the exhaust pipe, while cold air is sucked in from the air inlet, forming an air circulation, which facilitates the discharge of moisture in the whole interior of the roof;

[0049] As shown in Figure 3As shown, the pipe body of the drainage and exhaust node assembly is a T-tube with a rectangular end face, the partition seam side plate 8 forms a "T"-shaped partition seam on the top of the pipe body of the T-tube, and the inner partition plate 3 forms a drainage channel and an exhaust channel in the inner cavity of the pipe, and the drainage channel is in the same direction as the partition seam.

[0050] like Figure 4 As shown, the pipe body of the drainage and exhaust node assembly is an L-shaped tube with a rectangular end face, and the partition seam side plate 8 forms an "L"-shaped partition seam on the top of the pipe body of the L-shaped tube, and the inner partition plate 3 forms a drainage channel and an exhaust channel in the inner cavity of the pipe, and the drainage channel is in the same direction as the partition seam.

[0051] like Figure 5 As shown, the pipe body of the drainage and exhaust node assembly is a cross-shaped pipe with a rectangular end face. The partition seam side plate 8 forms a cross-shaped partition seam on the top of the pipe body of the cross-shaped pipe. The inner partition plate 3 forms a drainage channel and an exhaust channel in the inner cavity of the pipe. The drainage channel and the partition seam are in the same direction.

[0052] Specifically, the cross-shaped pipe body also includes a ventilation pipe 11, which is a vertically arranged tubular structure. The bottom of the ventilation pipe 11 is fixed to the center of the top of the cross-shaped pipe through a reducer connection assembly 10. The upper surface of the pipe body is provided with an opening that passes through the exhaust channel and the ventilation pipe 11. The reducer connection assembly 10 is provided at the inner corner of the intersection center of the two partition seams of the cross-shaped multifunctional drainage and exhaust node member. Its bottom is fixedly connected to the upper surface of the pipe body, and its two sides are fixedly connected to the two adjacent partition seam side panels. The upper part is connected to the ventilation pipe 11 to form a hollow cavity. The upper surface of the pipe body corresponding to the bottom of the hollow cavity has an opening; the other end of the ventilation pipe 11 is forked and bent to form two downward-opening air outlets. The gas in the ventilation channel enters the ventilation pipe 11 through the opening on the perforated top plate 6, and is then discharged to the outside through the air outlet.

[0053] Furthermore, a coil material fixing strip 4 is provided on the outer side of the lower part of the partition seam side panel 8, the upper edge of the coil material fixing strip 4 is fixedly connected to the partition seam side panel 8, and the lower part is tilted outward to form an arc-shaped curved portion, and fixing bolts 5 are provided on the arc-shaped curved portion at regular intervals for fixing the coil material fixing strip.

[0054] Furthermore, a fixing gasket 1 is provided along the left and right sides of the bottom of the pipe body. The fixing gasket 1 is arranged at a certain interval along the bottom length direction of the pipe body. The nails 2 are fixed to the drainage and exhaust node assembly and the roof slope layer or roof panel through the fixing gasket 1.

[0055] Further, the exhaust passage is filled with large-gap open-graded hard plastic particles, so that the pipe can resist compression and deformation, and can effectively relieve the roof surface runoff under heavy rain conditions, achieving a "sponge" roof effect.

[0056] In other optional embodiments, the pipe body can also be a long pipe with a circular end face, a T-shaped pipe, an L-shaped pipe, and a cross-shaped pipe. According to the needs of the construction of the wall surface and the ground, the pipe body can also be a special-shaped pipe.

[0057] The working principle of the multifunctional drainage and exhaust combination device for flat roof provided by the application is as follows: when rain falls on the roof, the convex grid joint structure serves as a preliminary collection and guiding system for rainwater, ensuring that the rainwater flows along the preset path, accelerates the penetration and discharge of the rainwater through the built-in permeable asphalt concrete material (which has excellent water permeability), quickly absorbs the roof surface water and infiltrates into the drainage channel surrounded by the inner partition plate in the pipe body, and finally introduces the roof surface water into the roof drainage open ditch, thereby completing the entire drainage process. In order to enhance the waterproof effect, the waterproof roll material is fixed by the roll material fixing batten device provided on the side plate of the grid joint on the top of the pipe, which not only prevents rainwater from penetrating into the insulation layer, but also improves the sealing performance of the roof.

[0058] When the roof needs to be exhausted, the accumulated gas in the insulation layer is introduced into the exhaust passage of the pipe body through the perforations on both sides of the pipe body, which is specially designed for the flow and discharge of gas, and then the gas enters the vent pipe through the reducing connection assembly of the cross-shaped node assembly and is finally discharged from the roof, thereby keeping the space below the roof dry and ventilated and preventing the accumulation of moisture and harmful gases. This design realizes the integrated drainage and exhaust function, which can work effectively whether it is raining or needs to be exhausted.

[0059] The flat roof multifunctional drainage and exhaust combined device provided by the application sets longitudinal and transverse pipelines inside the thermal insulation layer according to the requirement of the grid joint spacing, the internal exhaust channel and the internal drainage channel of the pipeline are separated from each other, the top of the pipeline is provided with a protruding grid joint structure, the outside of the structure is provided with a bolted batten device, and the waterproof coiled material is fixed and closed, so that the thermal insulation layer is prevented from being infiltrated by rainwater, meanwhile, the protruding grid joint is internally provided with water-permeable asphalt concrete material, and on the other hand, a vertical air vent is arranged at the joint of the longitudinal and transverse pipelines, so that the problems of large-area vertically arranged roof exhaust and drainage integration, large runoff in storm working conditions, inconvenience in walking, late joint cutting, easy cracking and difficult leveling are solved. The flat roof multifunctional drainage and exhaust combined device has the following advantages: 1. By arranging an internal partition plate inside the pipeline body and arranging dense perforations on the top and both sides of the pipeline body, the drainage channel and the exhaust channel are separated from each other, so that the gas and the moisture can flow in different channels respectively, which can reduce the accumulation of moisture in the thermal insulation layer, and allows the gas to be smoothly discharged, improves the efficiency of drainage and exhaust, realizes the integration of exhaust and drainage, and improves the overall performance of the roof through reasonable layout and structural design. 2. By arranging a grid joint side plate on the top of the pipeline and filling water-permeable concrete, the grid joint effect is achieved, the grid joint is formed at one time, the influence on the construction site environment is reduced, the on-site construction is greatly facilitated, the construction process is optimized, the engineering progress is accelerated, and the engineering quality is improved. Meanwhile, the water flow is guided, the water-permeable asphalt concrete material has good water permeability, and the drainage of rainwater is accelerated. 3. The drainage and exhaust node assembly is composed, can be quickly assembled on site, is suitable for fine aggregate concrete grid of different sizes, can more conveniently pave the insulation board in the grid, improves the construction speed, and the modular design makes it easier to maintain and replace parts. 4. The vertical air vent further optimizes the exhaust performance. The vertical air vent can provide a direct channel for the internal hot gas and moisture to be discharged more smoothly, thereby reducing the accumulation of moisture in the roof structure, avoiding possible damage caused by condensation, promoting the natural flow of air, and improving the exhaust efficiency. 5. The pipeline body provided outside the lower part of the grid joint side plate adopts a batten device capable of fixing the waterproof coiled material, avoids the problem of weak waterproofness at the coiled material closing part, and uses a bolt to mechanically fix the coiled material closing part, so that the waterproof sealing effect of the coiled material closing part is improved. 6. The top of the grid joint side plate can serve as a reference surface for fine aggregate concrete construction, effectively controls the finished surface of large-area concrete pouring, and the formed fine aggregate concrete protection layer is regularly divided by the grid joint, solves the problems of large dust during late joint cutting of the roof and easy cracking due to untimely joint cutting, and improves the flatness and appearance quality of the fine aggregate concrete protection layer.

[0060] The application provides a construction method of a flat roof multifunctional exhaust and drainage combined device.

[0061] S100: Construction preparation: Ensure that the construction site has the necessary construction conditions, including material storage area, tool and equipment placement area, etc.; check whether the water supply and power supply pipelines meet the construction needs and ensure safety; investigate the surrounding environment to understand the factors that may affect construction, such as weather, traffic, etc.; according to the requirements of building design, complete the construction of the roof slope layer, ensure smooth drainage; conduct detailed technical briefing and safety education to construction personnel, ensure construction quality and safety.

[0062] S200: Measurement and line laying: According to the design drawings and specification requirements, determine the size and position of the grid joint; conduct detailed layout design on the building plan to ensure the reasonable layout of the grid joint; on-site line laying to ensure the accuracy of the control points, and key control points cross intersection, L-type corner points, boundary T-type points are marked with paint and take reliable protection measures to prevent accidental damage during construction.

[0063] S300: Node component assembly: Place the "X" type node, "T" type node, and "L" type node according to the paint positioning points marked by the line laying, adjust the elevation of the components using a level or other tools to ensure flatness, and after adjustment, use a nail gun to fix each component on the slope layer or roof panel.

[0064] S400: Ordinary piece assembly: Place the long tube ordinary piece according to the fixed node piece and its positioning ink line, adjust the level after placing to ensure the flatness and sealing of the connection, and use a nail gun to fix each component on the slope layer or roof panel in a timely manner after leveling.

[0065] S500: Insulation layer paving: Pave the insulation board in each grid, and ensure that the gaps of the insulation board are filled with special materials to achieve good insulation effect.

[0066] S600: Leveling layer construction: Construct the cement mortar leveling layer in each grid, considering the drainage slope to ensure that rainwater can be smoothly drained.

[0067] S700: Waterproof layer construction: According to the design requirements and specifications, perform waterproof material paving, cut the material at the grid joint, and insert the end into the material fixing batten, then tighten the fixing bolt, and then seal with sealing paste to ensure waterproof effect.

[0068] S800: Protection layer construction: Use the grid joint side plate as a side form to construct the fine stone concrete protection layer, and use the top of the grid joint side plate as a reference surface to directly control the fine stone concrete finished surface elevation of each compartment.

[0069] The construction method of the multifunctional exhaust and drainage combined device for flat roof is that the finished device is prefabricated and processed, the device is assembled and formed on the roof after the construction of the roof slope layer is completed, and is fixed in the position set in advance, so that the sealing performance of the assembly joint is ensured.

[0070] Those skilled in the art can understand that the above description is only preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-functional drainage and venting combined device for flat roof, comprising at least one drainage and venting node assembly, characterized in that: The drainage and exhaust node assembly forms different shapes according to different positions of the roof, is fixed to key control points on a roof slope layer or a roof panel, and is combined and assembled with each other to adapt to fine stone concrete subgrids of different sizes; The drainage and exhaust node assembly comprises a pipeline main body, the pipeline main body is a long pipe with a rectangular end face, and the long pipe is fixedly connected by a bottom plate (9), two perforated side plates (7) and a perforated top plate (6); an inner partition plate (3) is arranged in the inner cavity of the pipeline main body, and the inner partition plate (3) divides the inner cavity of the pipeline into a drainage passage at the bottom of the pipeline and exhaust passages on both sides of the drainage passage; a hole communicating with the drainage passage is arranged at the top of the pipeline, and holes communicating with the exhaust passages are arranged on both sides of the pipeline; The drainage and exhaust node assembly further comprises two subgrid joint side plates (8) arranged on the upper surface of the top of the pipeline main body, the subgrid joint side plates (8) are arranged at intervals and are fixedly connected with the top of the pipeline main body, a subgrid joint is formed between the two subgrid joint side plates (8), and the subgrid joint is in the same direction as the drainage passage.

2. The multi-functional drain and vent combination for a flat roof as defined in Claim 1, wherein: The pipeline main body is a T-shaped pipe with a rectangular end face, and the drainage passage is T-shaped.

3. The multi-functional drain and vent combination for a flat roof as defined in Claim 1, wherein: The pipeline main body is an L-shaped pipe with a rectangular end face, and the drainage passage is L-shaped.

4. The multi-functional drain and vent combination for a flat roof as defined in Claim 1, wherein: The pipeline main body is a cross-shaped pipe with a rectangular end face, and the drainage passage is cross-shaped.

5. The multi-functional drain and vent combination for a flat roof according to claim 4, wherein: The cross-shaped pipe further comprises a gas permeable pipe (11), the gas permeable pipe (11) is a tubular structure arranged vertically, the bottom of the gas permeable pipe (11) is fixed to the center of the top of the cross-shaped pipe through a reducing connection assembly (10), the upper part of the gas permeable pipe (11) is bent into two gas outlets with downward openings, and the upper surface of the pipeline main body is provided with holes penetrating the exhaust passages and the gas permeable pipe (11).

6. The multi-functional draining and ventilating combined device for flat roof according to any one of claims 1-5, characterized in that: The outer side of the lower part of the subgrid joint side plate (8) is provided with a roll material fixing batten (4), the upper side edge of the roll material fixing batten (4) is fixedly connected with the subgrid joint side plate (8), the lower part is outwardly curved to form an arc-shaped curved part, and a fixing bolt (5) is arranged on the arc-shaped curved part at intervals.

7. The multi-functional drain and vent combination for a flat roof according to claim 6, wherein: The bottom of the pipeline main body is provided with a fixing gasket (1) extending along the left and right sides, the fixing gaskets (1) are arranged at intervals along the length direction of the bottom of the pipeline main body, and a shot pin (2) is used to fix the drainage and exhaust node assembly to the roof slope layer or the roof panel through the fixing gaskets (1).

8. The multi-functional drain and vent combination for a flat roof according to claim 7, wherein: The exhaust passages are filled with large-gap open-graded hard plastic particles to provide the pipeline main body with compression resistance and deformation resistance.

9. A method of installing a multi-functional drainage and venting combination device for a flat roof as claimed in any one of claims 6 to 8, characterised in that: The specific steps are as follows, S100: construction preparation: ensure that the construction site has necessary construction conditions, including a material stacking area and a tool and equipment placing area; check whether water supply and power supply pipelines meet the construction requirements and ensure safety; investigate the surrounding environment to understand factors that may affect construction; complete the construction of a roof slope layer or a roof panel according to the design requirements of the building, and ensure smooth drainage; and perform detailed technical briefing and safety education on construction personnel to ensure construction quality and safety. S200: Measurement of release line: according to the design drawings and specification requirements, determine the size and position of the grid joint; detailed layout design on the building plan, to ensure the reasonable layout of the grid joint; field release line, to ensure the accuracy of the control points, and in the cross intersection, L type corner point, boundary T type point spray paint marking, and take reliable protection measures to prevent accidental damage during construction; S300: Node component assembly: according to the paint positioning point of release line mark respectively placed "X" type node piece, "T" type node piece, "L" type node piece, using level or other tools to adjust the elevation of the components, to ensure the flatness, after adjustment is completed by using the nail gun to fix each component on the roof slope layer or roof panel; S400: Ordinary piece assembly: according to the fixed node piece and its positioning ink line to place long tube ordinary piece, after placing the leveling, to ensure the flatness and sealing of the connection, after leveling in time by using the nail gun to fix each component on the roof slope layer or roof panel; S500: Insulation layer paving: in each grid respectively paving insulation board, to ensure the gap of the insulation board with special material filling, to achieve good insulation effect; S600: Leveling layer construction: in each grid respectively construction cement mortar leveling layer, leveling layer construction should consider the drainage slope, to ensure that the rainwater can be discharged smoothly; S700: Waterproof layer construction: according to the design requirements and specifications, to carry on the waterproof material paving, cut off the material in the grid joint, and put the end into the fixed batten, then tighten the fixed bolt, then use the sealing paste to seal, to ensure the waterproof effect; S800: Protection layer construction: using the grid joint side plate as side mold, using the skip method to construct the fine stone concrete protection layer, using the top of the grid joint side plate as the reference surface, directly control the fine stone concrete finished surface elevation of each bin.

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