Downward drainage and exhaust check valve for roof

Abstract

The utility model discloses a roof downward drainage and exhaust check valve, which relates to the technical field of secondary exhaust and drainage of building roofs, and comprises a steel bar truss floor support plate, SBS (styrene butadiene styrene) waterproof coiled materials are laid on the upper surface of the steel bar truss floor support plate, the SBS waterproof coiled materials and an extruded polystyrene board thermal insulation layer are laid on the upper surface of the steel bar truss floor support plate, and a metal siphon gutter inlet is arranged in the steel bar truss floor support plate. A siphon rainwater main pipe is installed in the metal siphon rainwater opening, the top of the metal siphon rainwater opening is connected with a leaf blocking device, a newly-added downward drainage and exhaust branch pipe is connected in the steel bar truss floor support plate, and the top of the newly-added downward drainage and exhaust branch pipe is also connected with a leaf blocking device. A roof secondary drainage and exhaust check valve is arranged in an inner cavity of the newly-added downward drainage and exhaust branch pipe. The roof waterproof construction problem of ultra-low energy consumption buildings with high roof waterproof requirements and public buildings with the waterproof grade of I is solved, roof waterproof effectiveness of the buildings during the whole service life is ensured, the construction progress is accelerated, and the roof waterproof device has high social and economic values.

Description

Technical Field

[0001] The utility model relates to the technical field of secondary exhaust and drainage of building roofs, in particular to a downward drainage and exhaust check valve for roofs. Background Technique

[0002] Ultra-low energy consumption buildings and public buildings with a waterproof grade of level I generally have three waterproof layers, generally two roll waterproof layers and one coating waterproof layer. To achieve the effectiveness of waterproofing during the entire service life of the roof waterproof layer, the key factor is that the drainage and exhaust functions of the roof insulation layer are always reliable and effective.

[0003] However, the following problems exist in actual projects: 1. Before the construction of the topmost roll waterproof layer on the roof is completely completed, in case of rain, the accumulated water on the roof cannot be drained; 2. After the house is delivered, in case of local seepage on the roof, the accumulated water in the roof insulation layer cannot be drained, and at the same time, water vapor cannot be discharged; 3. If the method of setting upward exhaust pipes on the roof is used to solve the above problems, the joint between the exhaust pipe and the roll layer itself is a leakage risk point, and finally the exhaust function will be lost, resulting in the accumulation of water in the roof insulation layer. The above functions gradually fail with the damage of the roof exhaust pipe and the accidental damage of the waterproof layer. The engineering field urgently needs a reliable and full-service drainage and exhaust construction process. For this reason, we propose a downward drainage and exhaust check valve for roofs. Content of the Utility Model

[0004] The purpose of the utility model is to provide a downward drainage and exhaust check valve for roofs to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A downward drainage and exhaust check valve for roofs, including a steel bar truss floor slab, an SBS waterproof coil is laid on the upper surface of the steel bar truss floor slab, and an extruded polystyrene board insulation layer is arranged on the top of the SBS waterproof coil. A metal siphonic rainwater port is arranged through the steel bar truss floor slab, the SBS waterproof coil and the extruded polystyrene board insulation layer, and a siphonic rainwater main pipe is vertically installed in the metal siphonic rainwater port. The bottom end of the siphonic rainwater main pipe penetrates through the steel bar truss floor slab, and a baffle is connected to the top of the metal siphonic rainwater port;

[0007] There are also openings on the steel bar truss floor slab, and the top of the opening is connected to the extruded polystyrene board thermal insulation layer. A new downward drainage and exhaust branch pipe is vertically connected in the opening, and a leaf guard is also connected to the top of the new downward drainage and exhaust branch pipe. The bottom end of the new downward drainage and exhaust branch pipe is connected to the siphonic rainwater main pipe. A roof secondary drainage and exhaust check valve is arranged in the inner cavity of the new downward drainage and exhaust branch pipe. The roof secondary drainage and exhaust check valve includes an acrylic pipe, and an HDPE drainage pipe is arranged in the inner cavity of the acrylic pipe. A valve component is installed in the acrylic pipe. A moving component is connected to the valve component, and a stainless steel floating ball is arranged below the moving component.

[0008] Preferably, the moving component includes an acrylic round plate. The acrylic round plate is connected to the valve component, and an acrylic rod is installed at the bottom of the acrylic round plate. A glass bead screw is arranged in the acrylic rod, and a nylon bead is connected to the bottom of the glass bead screw.

[0009] Preferably, there are two groups of HDPE drainage pipes. The bottom end of the upper HDPE drainage pipe is connected to the valve component, and the top end of the lower HDPE drainage pipe is connected to the bottom of the stainless steel floating ball.

[0010] Preferably, the outer walls of the siphonic rainwater main pipe and the new downward drainage and exhaust branch pipe near one end of the steel bar truss floor slab are sleeved with a thick glass wool thermal insulation layer. The thickness of the thick glass wool thermal insulation layer is 50 mm, and a 1-mm aluminum plate is arranged on the outside of the thick glass wool thermal insulation layer.

[0011] Preferably, a water receiving tray is installed at one end of the new downward drainage and exhaust branch pipe near the steel bar truss floor slab. There is a non-curing waterproof coating II between the steel bar truss floor slab and the opening, and a non-curing waterproof coating I between the steel bar truss floor slab and the SBS waterproof coiled material.

[0012] Preferably, a PVC waterproof coiled material is laid on the upper surface of the extruded polystyrene board thermal insulation layer. The thickness of the PVC waterproof coiled material is 1.5 mm, the thickness of the SBS waterproof coiled material is 3 mm, and the size of the extruded polystyrene board thermal insulation layer is 3 * 75 mm.

[0013] Preferably, the valve component is bonded by acrylic pipes and plates through mortise and tenon joints and acrylic glue. The stainless steel floating ball is cylindrical, and the size of the stainless steel floating ball is 50 * 40 * 0.3 mm. The thickness of the non-curing waterproof coating I is 2 mm.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, a water accumulation tray is added to the roof structural layer, a new downward drainage and exhaust branch pipe and a roof secondary drainage and exhaust check valve are added. Since the drainage and exhaust are downward, the probability of being damaged by humans is greatly reduced, the roof exhaust pipe is cancelled, and the drainage and exhaust facilities are more effective during the whole life cycle of the building; when the rainwater fills the main pipe and backflows into the branch pipe, the stainless steel floating ball of the roof secondary drainage and exhaust check valve moves upward to push up the check piston, blocking the upper opening, and the rainwater will not backflow into the insulation layer. The moving component converts the unstable buoyancy of the stainless steel floating ball into a vertically upward thrust. The spring in the ball screw can ensure that when the buoyancy changes, the check piston can closely adhere to the upper opening of the valve, and it has the function of preventing backflow when it rains heavily; the roof secondary drainage and exhaust check valve is mainly processed from acrylic materials. The acrylic materials are transparent and the internal components can be seen. Moreover, the valve is installed under the floor slab and can be seen indoors. The function of the drainage and exhaust facilities can be visually inspected; the roof secondary drainage and exhaust technology solves the pain points of roof waterproof construction for ultra-low energy consumption buildings with high requirements for roof waterproofing and public buildings with a waterproof grade of Class I, ensures the effectiveness of roof waterproofing during the whole life cycle of the building, speeds up the construction progress, and has high social and economic value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front structural sectional view of the utility model;

[0017] Figure 2 is a structural schematic diagram of the roof secondary drainage and exhaust check valve of the utility model;

[0018] Figure 3 is a structural schematic diagram of the roof secondary drainage and exhaust check valve during drainage and exhaust of the utility model;

[0019] Figure 4 is a structural schematic diagram of the roof secondary drainage and exhaust check valve of the utility model when preventing rainwater backflow;

[0020] Figure 5 is a structural schematic diagram of the moving component of the utility model.

[0021] In the figure: 1, steel bar truss floor slab; 2, extruded polystyrene insulation layer; 4, metal siphonic rainwater outlet; 5, SBS waterproof coiled material; 6, leaf guard; 7, PVC waterproof coiled material; 8, non-curing waterproof coating I; 9, water receiving tray; 10, non-curing waterproof coating II; 11, thick glass wool insulation layer; 12, siphonic rainwater main pipe; 13, roof secondary drainage and exhaust check valve; 131, acrylic pipe; 132, HDPE drainage pipe; 133, valve component; 134, moving component; 1341, acrylic round plate; 1342, acrylic rod; 1343, ball screw; 1344, nylon bead; 135, stainless steel floating ball; 14, newly added downward drainage and exhaust branch pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment:

[0024] Please refer to Figures 1-5 , the present utility model provides a technical solution: a roof downward drainage and exhaust check valve, including a steel bar truss floor slab 1, an SBS waterproof coiled material 5 is laid on the upper surface of the steel bar truss floor slab 1, and an extruded polystyrene board thermal insulation layer 2 is provided on the top of the SBS waterproof coiled material 5. A metal siphonic rainwater port 4 is provided through the steel bar truss floor slab 1, the SBS waterproof coiled material 5 and the extruded polystyrene board thermal insulation layer 2, and a siphonic rainwater main pipe 12 is vertically installed in the metal siphonic rainwater port 4. The bottom end of the siphonic rainwater main pipe 12 penetrates the steel bar truss floor slab 1, and a baffle 6 is connected to the top of the metal siphonic rainwater port 4;

[0025] An opening is also provided on the steel bar truss floor slab 1, and the top end of the opening is communicated with the extruded polystyrene board thermal insulation layer 2. A newly added downward drainage and exhaust branch pipe 14 is vertically connected in the opening, and a baffle 6 is also connected to the top of the newly added downward drainage and exhaust branch pipe 14. The bottom end of the newly added downward drainage and exhaust branch pipe 14 is communicated with the siphonic rainwater main pipe 12. A roof secondary drainage and exhaust check valve 13 is provided in the inner cavity of the newly added downward drainage and exhaust branch pipe 14. The roof secondary drainage and exhaust check valve 13 includes an acrylic tube 131, and an HDPE drainage pipe 132 is provided in the inner cavity of the acrylic tube 131. A valve member 133 is installed in the acrylic tube 131, a moving member 134 is connected to the valve member 133, and a stainless steel floating ball 135 is provided below the moving member 134.

[0026] A water accumulation tray 9, a newly added downward drainage and exhaust branch pipe and a roof secondary drainage and exhaust check valve 13 are added to the roof structural layer, and their installation methods are as Figure 1 shown. Since it is downward drainage and exhaust, the probability of being damaged by humans is greatly reduced. The roof exhaust pipe is cancelled and changed to the downward drainage and exhaust method, and the drainage and exhaust facilities are effective during the entire service life of the building;

[0027] The structure of the roof secondary drainage and exhaust check valve 13 is as Figure 2 shown. Its core component is a check piston with a ball screw 1343 installed at the top, and its structure is as Figure 5As shown, the function of the check piston is: when rainwater fills the main pipe and backflows into the branch pipe, the stainless steel float ball 135 moves upward to push up the check piston, blocking the upper opening, so that rainwater cannot backflow into the insulation layer. The function of the ball screw 1343 is: to convert the unstable buoyancy of the stainless steel float ball 135 into a vertically upward thrust; the spring inside the ball screw 1343 can ensure that when the buoyancy changes, the check piston can closely adhere to the upper opening of the valve; in the drainage and exhaust working conditions and the working condition of preventing rainwater backflow, such as Figure 3 , Figure 4 shown, it realizes the functions of draining rainwater in the roof insulation layer during construction and rainwater entering the roof insulation layer due to accidental factors after the completion of the house, the air in the insulation layer can be discharged downward when heated and expanded, and discharged outdoors from the top of the siphonic rainwater main pipe, and has the function of preventing backflow when it rains heavily;

[0028] The roof secondary drainage and exhaust check valve 13 is mainly made of acrylic material. The acrylic material is transparent and the internal components can be seen. And the valve is installed under the floor slab and can be seen indoors, so its function can be visually inspected. The function of the drainage and exhaust facilities can be visually inspected.

[0029] Among them, the moving member 134 includes an acrylic round plate 1341. The acrylic round plate 1341 is connected to the valve member 133, and an acrylic rod 1342 is installed at the bottom of the acrylic round plate 1341. A ball screw 1343 is arranged inside the acrylic rod 1342, and a nylon bead 1344 is connected to the bottom of the ball screw 1343; the thickness of the acrylic round plate 1341 is 5mm, the size of the acrylic rod 1342 is 8mm, the size of the ball screw 1343 is 16*6*3*3, and the size of the nylon bead 1344 is 3mm.

[0030] There are two groups of HDPE drain pipes 132. The bottom end of the upper HDPE drain pipe 132 is connected to the valve member 133, and the top end of the lower HDPE drain pipe 132 is connected to the bottom of the stainless steel float ball 135; the size of the HDPE drain pipe 132 is 75mm, and the size of the acrylic pipe 131 is 85*5. When the moving member 134 usually falls, the water and gas in the roof insulation layer can be discharged through the valve. When the rainfall is large, it is blocked by the float ball to prevent rainwater from backflowing into each insulation layer on the steel truss floor slab 1.

[0031] A thick glass wool insulation layer 11 is sleeved on the outer walls of the siphonic rainwater main pipe 12 and the newly added downward drainage and exhaust branch pipe 14 near one end close to the steel bar truss floor slab 1. The thickness of the thick glass wool insulation layer 11 is 50 mm, and there is a 1-mm aluminum plate on the outside of the thick glass wool insulation layer 11. The thick glass wool insulation layer 11 plays a heat preservation role for the siphonic rainwater main pipe 12 and the newly added downward drainage and exhaust branch pipe 14, avoiding the siphonic rainwater main pipe 12 and the newly added downward drainage and exhaust branch pipe 14 in cold weather. The 1-mm aluminum plate on the outside of the thick glass wool insulation layer 11 plays a protective role for the siphonic rainwater main pipe 12 and the newly added downward drainage and exhaust branch pipe 14, extending the service life of the thick glass wool insulation layer 11.

[0032] A water receiving tray 9 is installed at one end of the newly added downward drainage and exhaust branch pipe 14 close to the steel bar truss floor slab 1. There is a non-curing waterproof coating II 10 between the steel bar truss floor slab 1 and the opening, and there is a non-curing waterproof coating I 8 between the steel bar truss floor slab 1 and the SBS waterproof coiled material 5. The water receiving tray 9 plays a role in receiving water, and the non-curing waterproof coating II 10 and the non-curing waterproof coating I 8 further improve the waterproof performance of the roof insulation layer.

[0033] A PVC waterproof coiled material 7 is laid on the upper surface of the extruded polystyrene board insulation layer 2. The thickness of the PVC waterproof coiled material 7 is 1.5 mm, the thickness of the SBS waterproof coiled material 5 is 3 mm, and the size of the extruded polystyrene board insulation layer 2 is 3 * 75 mm. The PVC waterproof coiled material 7 and the SBS waterproof coiled material 5 play a waterproof role.

[0034] The valve member 133 is bonded by acrylic pipes and plates through mortise and tenon joints and acrylic glue. The stainless steel floating ball 135 is cylindrical, and the size of the stainless steel floating ball 135 is 50 * 40 * 0.3 mm. The thickness of the non-curing waterproof coating I 8 is 2 mm. The valve member 133 bonded by acrylic pipes and plates through mortise and tenon joints and acrylic glue is convenient to manufacture, and the acrylic material is transparent, and the internal components can be seen. Moreover, the valve is installed under the floor slab and can be seen indoors, so whether its function is normal can be visually inspected, and the function of the drainage and exhaust facilities can be visually inspected.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A roof downward drainage and exhaust check valve, comprising a steel truss floor deck (1), characterized in that: The upper surface of the steel truss floor deck (1) is paved with an SBS waterproofing coil (5), and an extruded polystyrene insulation layer (2) is provided on the top of the SBS waterproofing coil (5); a metal siphon rainwater outlet (4) is provided through the steel truss floor deck (1), the SBS waterproofing coil (5) and the extruded polystyrene insulation layer (2); a siphon rainwater main pipe (12) is vertically installed in the metal siphon rainwater outlet (4); the bottom end of the siphon rainwater main pipe (12) passes through the steel truss floor deck (1), and a leaf stopper (6) is connected to the top of the metal siphon rainwater outlet (4); The steel truss floor deck (1) is also provided with an opening, and the top of the opening is in communication with the extruded polystyrene board insulation layer (2); a newly added downward drainage and exhaust branch pipe (14) is vertically connected in the opening, and the top of the newly added downward drainage and exhaust branch pipe (14) is also connected with a leaf stopper (6); the bottom end of the newly added downward drainage and exhaust branch pipe (14) is in communication with the siphon rainwater main pipe (12); the inner cavity of the newly added downward drainage and exhaust branch pipe (14) is provided with a roof secondary drainage and exhaust check valve (13); the roof secondary drainage and exhaust check valve (13) comprises an acrylic tube (131), and the inner cavity of the acrylic tube (131) is provided with a HDPE drainage pipe (132); a valve component (133) is installed in the acrylic tube (131); a moving component (134) is connected to the valve component (133), and a stainless steel float (135) is provided below the moving component (134).

2. A roof downward drainage and exhaust check valve according to claim 1, characterized in that: The movable member (134) comprises an acrylic circular plate (1341), the acrylic circular plate (1341) is connected to the valve member (133), an acrylic rod (1342) is installed at the bottom of the acrylic circular plate (1341), a glass bead screw (1343) is arranged inside the acrylic rod (1342), and a nylon ball (1344) is connected to the bottom of the glass bead screw (1343).

3. A roof downward drainage and exhaust check valve according to claim 1, characterized in that: The HDPE drainage pipe (132) is provided in two groups, the bottom end of the upper HDPE drainage pipe (132) is connected to the valve component (133), and the top end of the lower HDPE drainage pipe (132) is connected to the bottom of the stainless steel float (135).

4. A roof downward drainage and exhaust check valve according to claim 1, characterized in that: The outer wall of the siphon rainwater main pipe (12) and the newly added downward drainage and exhaust branch pipe (14) near one end of the steel truss floor deck (1) is covered with a thick glass wool insulation layer (11), the thickness of the thick glass wool insulation layer (11) is 50 mm, and a 1 mm aluminum plate is provided on the outer side of the thick glass wool insulation layer (11).

5. The roof downward drainage and exhaust check valve according to claim 1, characterized in that: A water receiving pan (9) is installed at one end of the newly added downward drainage and exhaust branch pipe (14) close to the steel truss floor deck (1), a non-curing waterproof coating 2 (10) is provided between the steel truss floor deck (1) and the opening, and a non-curing waterproof coating 1 (8) is provided between the steel truss floor deck (1) and the SBS waterproof membrane (5), and the thickness of the non-curing waterproof coating 1 (8) is 2 mm.

6. A roof downward drainage and exhaust check valve according to claim 1, characterized in that: A PVC waterproofing coiled material (7) is laid on the upper surface of the extruded polystyrene board insulation layer (2); the PVC waterproofing coiled material (7) has a thickness of 1.5 mm; the SBS waterproofing coiled material (5) has a thickness of 3 mm; and the size of the extruded polystyrene board insulation layer (2) is 3*75 mm.

7. The roof downward drainage and exhaust check valve according to claim 1, characterized in that: The valve component (133) is made of acrylic pipes and plates bonded together by mortise and tenon joints and acrylic glue; the stainless steel float (135) is cylindrical, and the size of the stainless steel float (135) is 50*40*0.3 mm.

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