Passive building outer wall and staggered joint paving construction method

Abstract

The invention discloses a passive building outer wall and a staggered joint paving construction method, and belongs to the technical field of outer wall paving. The passive building outer wall comprises an inner-layer heat preservation plate bracket and an outer-layer heat preservation plate bracket; an inner-layer insulation board is placed on each inner-layer insulation board bracket, and an outer-layer insulation board is placed on each outer-layer insulation board bracket; a certain height difference exists between the transverse supporting plate in the inner-layer heat preservation plate bracket and the lower transverse supporting plate in the outer-layer heat preservation plate bracket; a plurality of heat conduction holes which are linearly arrayed in the width direction of the outer-layer heat preservation plate are formed in the outer-layer heat preservation plate in a penetrating mode. According to the passive building outer wall and the staggered joint paving construction method, after paving is conducted, gaps of all the inner-layer heat preservation plates and gaps of all the outer-layer heat preservation plates in the horizontal direction and the vertical direction are staggered, the phenomenon of through joints is avoided, and the heat bridge effect is effectively blocked; the heat conduction holes are formed in the outer-layer heat preservation plate, heat is conducted to the roof preferentially with air as a medium, conduction of part of heat to the wall can be reduced, and the heat preservation plate has the better heat insulation effect.

Description

Technical Field

[0001] The invention relates to the technical field of exterior wall paving, in particular to a passive building exterior wall and a staggered paving construction method. Background Art

[0002] During the construction of passive building insulation systems, due to the large bulk density of rock wool boards, the thickness of the insulation layer of passive buildings is much greater than that of ordinary buildings. This leads to more stringent settings for insulation board brackets, and often requires insulation board brackets to be set up on each natural layer of the building.

[0003] At present, the commonly used PVC brackets and insulation boards on the market have the following technical problems:

[0004] 1. Since the PVC bracket supports the inner and outer layers of rock wool insulation boards at the same time, a through seam appears between the inner and outer rock wool boards at the height of the bracket, which fails to effectively block the thermal bridge effect;

[0005] 2. The PVC bracket is severely deformed during use and cannot fully support the rock wool board, causing the rock wool board to move downward;

[0006] 3. The speed of heat conduction from the insulation board to the wall is fast, and the thermal insulation effect is not good in actual application. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a passive building exterior wall and a staggered paving construction method. Since the inner insulation board bracket and the outer insulation board bracket in the passive building exterior wall are staggered with a certain height difference, the gaps between all the inner insulation boards and all the outer insulation boards are staggered after paving, avoiding the phenomenon of through-seam and effectively blocking the thermal bridge effect; the connection between two adjacent outer insulation board brackets is further strengthened by the connecting piece, which can inhibit the deformation of the outer insulation board bracket, thereby avoiding the downward movement of the insulation board; by opening a heat conduction hole in the outer insulation board, heat is preferentially conducted to the roof with air as the medium, which can reduce the conduction of part of the heat to the wall, and has a better thermal insulation effect.

[0008] To solve the above technical problems, the technical solution of the present invention is achieved as follows:

[0009] A passive building exterior wall, comprising an inner insulation board bracket fixed on the wall, an outer insulation board bracket fixedly installed on the inner insulation board bracket; two symmetrical inner insulation boards are placed on each inner insulation board bracket at the same time, and an outer insulation board located in the middle of the two inner insulation boards is placed on the outer insulation board bracket, at this time, the gaps between all the inner insulation boards and all the outer insulation boards in the vertical direction are staggered; there is a certain height difference between the transverse support plate in the inner insulation board bracket and the lower transverse support plate in the outer insulation board bracket, at this time, the gaps between all the inner insulation boards and all the outer insulation boards in the horizontal direction are staggered; a connecting piece for supporting the outer insulation board is fixedly installed between each two adjacent outer insulation board brackets; the inner part of the outer insulation board is penetrated by a plurality of heat conduction holes in a linear array along its width direction.

[0010] By adopting the above scheme, since the inner insulation board bracket and the outer insulation board bracket in the outer wall of the passive building are staggered with a certain height difference, the gaps between all the inner insulation boards and all the outer insulation boards are staggered after the insulation boards are laid, avoiding the phenomenon of through-holes and effectively blocking the thermal bridge effect; the connection between the two adjacent outer insulation board brackets is further strengthened by the connecting piece, which can inhibit the deformation of the outer insulation board bracket, thereby avoiding the downward movement of the insulation board; by opening a heat conduction hole in the outer insulation board, the heat is preferentially conducted to the roof with air as the medium, which can reduce the conduction of part of the heat to the wall, and has a better thermal insulation effect.

[0011] As a preferred implementation of a passive building exterior wall, the inner insulation board bracket is formed by L-shaped sheet metal integrally stamped; the outer insulation board bracket is formed by Z-shaped sheet metal integrally stamped; and the connecting piece is formed by I-shaped sheet metal integrally stamped.

[0012] By adopting the above scheme, in order to improve the rigidity and strength of the inner insulation board bracket, the outer insulation board bracket and the connecting plate, all three are stamped into a whole by a mold, which is convenient for batch processing and production and improves the quality of use.

[0013] As a preferred implementation scheme for the exterior wall of a passive building, a spacing reinforcement rib that divides the left and right sides into equal parts is welded and fixed inside the inner insulation board bracket; plug-in angle steels are welded and fixed on the left and right side walls of the spacing reinforcement ribs, and a wedge-shaped groove is provided between the plug-in angle steel and the transverse support plate of the inner insulation board bracket; the spacing of the wedge-shaped grooves gradually decreases from the outside to the inside of the inner insulation board bracket; a slot is provided in the middle of the upper transverse support plate of the outer insulation board bracket, and the slot can cooperate with the spacing reinforcement rib in a limited manner.

[0014] By adopting the above scheme, in order to achieve automatic locking of the outer insulation board bracket during installation, when the slot and the spacer reinforcement rib are limited, since the spacing of the wedge-shaped grooves gradually decreases from the outside to the inside of the inner insulation board bracket, when the outer insulation board bracket is struck with a hammer, the upper horizontal support plate of the outer insulation board bracket is continuously clamped by the inserted angle steel, thereby achieving automatic locking of the outer insulation board bracket during installation.

[0015] As a preferred implementation of a passive building exterior wall, circular holes are provided on the vertical support plate of the inner insulation board support plate on both sides of the spacing reinforcement ribs, and the inner insulation board support plate is fixed to the wall by installing expansion screws in the circular holes.

[0016] By adopting the above solution, in order to achieve the fixation of the inner insulation board bracket, it can be quickly fixed by installing expansion screws in the circular holes.

[0017] As a preferred implementation of a passive building exterior wall, a plurality of evenly distributed triangular reinforcing ribs are welded and fixed between the lower horizontal support plate and the vertical support plate of the outer insulation board bracket.

[0018] By adopting the above solution, in order to improve the strength of the outer insulation board bracket, triangular reinforcing ribs are welded to avoid deformation of the outer insulation board bracket.

[0019] As a preferred implementation of a passive building exterior wall, both ends of the lower horizontal support plate of the outer insulation board support are provided with oblong hole 1, and both ends of the connecting plate are provided with oblong hole 2; the outer insulation board support and the connecting plate are fixed by installing rivets in oblong hole 1 and oblong hole 2.

[0020] By adopting the above scheme, in order to achieve the fixation of the outer insulation board bracket and the connecting plate, the two can be quickly fixed by installing rivets in the oblong hole one and the oblong hole two.

[0021] As a preferred implementation of a passive building exterior wall, the upper and lower surfaces of the outer insulation board in the width direction are provided with heat flow grooves connected to all the heat conduction holes; a hollow groove is provided on the body of the connecting plate along its length direction; wherein the width of the heat flow groove is greater than the width of the connecting plate; wherein the diameter of the heat conduction hole is greater than the width of the hollow groove.

[0022] The above scheme is adopted, in order to guide the heat to be transferred toward the roof, by setting the heat conduction holes, due to the air in the heat conduction holes, when the heat is transferred to the heat conduction holes through the outer insulation board to the wall, the heat will be preferentially transferred upward along the heat conduction holes; in order to further improve the efficiency of the upward transfer of the heat conduction holes, by designing the heat flow groove, the heat is first transferred to the heat flow groove through the heat conduction holes, and then transferred to the upper heat conduction holes by the heat flow groove, thereby strengthening the flow of air between the upper and lower heat conduction holes, wherein during the heat transfer process, the connecting sheet will not block the heat transfer.

[0023] A staggered paving construction method, the staggered paving construction method uses the passive building exterior wall for construction, and the specific construction steps are as follows:

[0024] S1. First, lay out the lines for positioning. Set the bracket between each natural layer. Use a laser line projector to determine the horizontal line on the wall as the bottom positioning line of the bracket. Draw a vertical line every 1200mm as the middle positioning line of the bracket.

[0025] S2. Install the inner insulation board bracket according to the positioning line, and use expansion bolts to fix the inner insulation board bracket to the wall. The effective fixing depth of the expansion bolts in the base wall should be no less than 50mm;

[0026] S3. Clean the base wall. After the wall is cleaned, place the inner insulation board on both sides of the inner insulation board bracket. Then, glue the inner insulation board to the wall from one end piece by piece. The inner insulation board is fully glued and the gap between each adjacent inner insulation board is not more than 2mm. Then, fill it with foamed polyurethane to complete the paving of the inner insulation board.

[0027] S4. Insert the upper transverse support plate of the outer insulation board support into the wedge-shaped groove of the inner insulation board support, and tap lightly with a hammer until the outer insulation board support is completely locked;

[0028] S5. Use a connecting piece to connect two adjacent outer insulation board brackets to make the bracket a whole, wherein the connecting piece is quickly fixed by rivets to improve construction efficiency;

[0029] S6. Place the outer insulation board on the outer insulation board bracket and in the middle of the two inner insulation boards. At this time, the gaps between the inner insulation board and the outer insulation board in the vertical direction are staggered; and the lower horizontal support plate of the outer insulation board bracket and the horizontal support plate of the inner insulation board bracket are staggered by 150-250mm. At this time, the gaps between the inner insulation board and the outer insulation board in the horizontal direction are staggered. Then, the outer insulation board is bonded to the inner insulation board piece by piece from one end. The inner insulation board is bonded in a full-bonded form, and the gap between each adjacent inner insulation board is not more than 2mm. Then, it is filled with foamed polyurethane to complete the staggered paving of the insulation board.

[0030] S7. After the staggered paving of the insulation board is completed, the outer insulation board is treated with a plaster mortar; the prepared plaster mortar is evenly applied to the outer insulation board, and then the cut mesh cloth is stretched and attached to the bottom plaster mortar, and the mesh cloth is pressed into the mortar with a spatula while it is still wet, and the polymer mortar is smoothed from the middle to the top and bottom and left and right;

[0031] S8. When the first layer of finishing mortar is slightly dry and hard enough to touch, the anchor bolts can be installed. After the anchor bolts are installed, the second layer of finishing mortar can be constructed. The construction method of the finishing and mesh is the same as the previous one. After the mesh is filled, use the finishing mortar to smooth it.

[0032] By adopting the above scheme, during construction, the inner insulation board is laid first and then the outer insulation board. The inner and outer insulation boards can be laid almost simultaneously during the overall laying, and the laying is more coordinated. It also reduces the welding or bolt fixing processes in conventional practices, thereby increasing the overall laying efficiency by about 40%.

[0033] After adopting the above technical solution, the beneficial effects of the present invention are:

[0034] 1. Since the inner insulation board bracket and the outer insulation board bracket in the passive building exterior wall are staggered with a certain height difference, the gaps between all the inner insulation boards and all the outer insulation boards are staggered after the insulation boards are laid, avoiding the phenomenon of through seams and effectively blocking the thermal bridge effect; the connection between the two adjacent outer insulation board brackets is further strengthened by the connecting piece, which can inhibit the deformation of the outer insulation board bracket, thereby preventing the insulation board from moving downward; by opening a heat conduction hole in the outer insulation board, heat is preferentially conducted to the roof with air as the medium, which can reduce the conduction of part of the heat to the wall, and has a better thermal insulation effect;

[0035] 2. In order to improve the rigidity and strength of the inner insulation board bracket, the outer insulation board bracket and the connecting piece, the three are stamped into a whole by a mold, which is convenient for batch processing and production and improves the quality of use;

[0036] 3. In order to realize the automatic locking of the outer insulation board bracket during installation, when the slot and the spacing reinforcement rib are limited, since the spacing of the wedge-shaped groove gradually decreases from the outside to the inside of the inner insulation board bracket, when the outer insulation board bracket is struck with a hammer, the upper horizontal support plate of the outer insulation board bracket is continuously clamped by the inserted angle steel, thereby realizing the automatic locking of the outer insulation board bracket during installation;

[0037] 4. In order to guide the heat to be transferred toward the roof, heat conduction holes are set. Due to the air in the heat conduction holes, when the heat is transferred to the wall through the outer insulation board, the heat will be transferred upward along the heat conduction holes first. In order to further improve the efficiency of the heat conduction holes transferring upward, heat flow grooves are designed. The heat is first transferred to the heat flow grooves through the heat conduction holes, and then transferred to the heat conduction holes above by the heat flow grooves, thereby strengthening the air flow between the upper and lower heat conduction holes. In the process of heat transfer, the connecting sheet will not block the heat transfer.

[0038] 5. During construction, this method first lays the inner insulation board and then the outer insulation board. The inner and outer insulation boards can be laid almost simultaneously during the overall laying, and the laying is more coordinated. It also reduces the welding or bolt fixing process in conventional practices, and increases the overall laying efficiency by about 40%. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0040] Figure 1 The three-dimensional structure diagram after the inner layer of insulation board is laid on the wall as the main view;

[0041] Figure 2 This is a three-dimensional structural diagram after the inner layer of insulation board is laid on the wall;

[0042] Figure 3 The three-dimensional structure diagram after the inner insulation board and the outer insulation board are laid on the wall as the main view;

[0043] Figure 4 This is a three-dimensional structural diagram after the inner insulation board and the outer insulation board are laid on the wall;

[0044] Figure 5 for Figure 2 The three-dimensional structure after the inner insulation board bracket, the outer insulation board bracket and the connecting piece are installed Figure 1 ;

[0045] Figure 6 for Figure 2 The three-dimensional structure after the inner insulation board bracket, the outer insulation board bracket and the connecting piece are installed Figure 2 ;

[0046] Figure 7 for Figure 5 A three-dimensional structural diagram of the middle and inner insulation board bracket;

[0047] Figure 8 for Figure 7 Side view of the middle and inner insulation board bracket;

[0048] Fig. 9 for Figure 5 The three-dimensional structure diagram of the middle and outer insulation board brackets;

[0049] Fig.10 for Fig. 9 Side view of the middle and outer insulation board bracket;

[0050] Fig.11 for Figure 5 A three-dimensional structural diagram of the middle connecting piece;

[0051] Fig.12 for Figure 3 The three-dimensional structure diagram of the middle and outer insulation boards;

[0052] Fig.13 For display Fig.12 A three-dimensional structural diagram of the internal components;

[0053] Fig.14 for Figure 3 Bottom view of the middle connecting plate supporting the outer insulation board.

[0054] Markings in the figure: 1-inner insulation board bracket; 2-outer insulation board bracket; 3-inner insulation board; 4-outer insulation board; 5-connecting piece; 6-spacer reinforcement rib; 7-insertion angle steel; 8-wedge groove; 9-round hole; 10-slot; 11-triangular reinforcement rib; 12-long round hole one; 13-long round hole two; 14-heat conduction hole; 15-heat flow groove; 16-hollow groove. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] like Figures 1 to 6 , Figure 12 to Figure 13As shown, a passive building exterior wall is used for the paving construction of passive low-energy building exterior walls, including an inner insulation board bracket 1 fixed on the wall surface, and an outer insulation board bracket 2 is fixedly installed on the inner insulation board bracket 1; two symmetrical inner insulation boards 3 are placed on each inner insulation board bracket 1 at the same time, wherein the inner insulation boards 3 are rock wool boards, and an outer insulation board 4 located in the middle of the two inner insulation boards 3 is placed on the outer insulation board bracket 2, wherein the outer insulation board 4 is also a rock wool board, and at this time, the gaps in the vertical direction of all the inner insulation boards 3 and all the outer insulation boards 4 are staggered with each other; There is a certain height difference between the horizontal support plate in the inner insulation board bracket 1 and the lower horizontal support plate in the outer insulation board bracket 2. The length of the vertical support plate of the outer insulation board bracket 2 is 150-250mm. At this time, the horizontal gaps between all the inner insulation boards 3 and all the outer insulation boards 4 are staggered with each other; a connecting piece 5 for supporting the outer insulation board 4 is fixedly installed between each adjacent two outer insulation board brackets 2; the outer insulation board 4 is penetrated by a plurality of heat-conducting holes 14 in a linear array along its width direction, and the length and width dimensions of the inner and outer insulation boards are 1200mm*600mm.

[0057] Since the inner insulation board bracket 1 and the outer insulation board bracket 2 in the outer wall of the passive building are staggered with a certain height difference, the gaps between all the inner insulation boards 3 and all the outer insulation boards 4 are staggered after the insulation boards are laid, avoiding the phenomenon of through-holes and effectively blocking the thermal bridge effect; the connection between the two adjacent outer insulation board brackets 2 is further strengthened by the connecting piece 5, which can inhibit the deformation of the outer insulation board bracket 2, thereby avoiding the downward movement of the insulation board; by opening the heat conduction hole 14 in the outer insulation board 4, the heat is preferentially conducted to the roof with air as the medium, which can reduce the conduction of part of the heat to the wall, and has a better thermal insulation effect.

[0058] like Figure 5 to Figure 6 As shown, the inner insulation board bracket 1 is formed by integrally stamping an L-shaped sheet metal; the outer insulation board bracket 2 is formed by integrally stamping an Z-shaped sheet metal; and the connecting piece 5 is formed by integrally stamping an I-shaped sheet metal. In order to improve the rigidity and strength of the inner insulation board bracket 1, the outer insulation board bracket 2 and the connecting piece 5, the three are integrally stamped by sheet metal through a mold, which is convenient for batch processing and production and improves the quality of use.

[0059] like Figures 7 and 8As shown, the inner layer insulation board bracket 1 is welded and fixed with a spacing reinforcement rib 6 which divides the left and right sides equally; the left and right side walls of the spacing reinforcement rib 6 are welded and fixed with plug-in angle steels 7, and there is a wedge-shaped groove 8 between the plug-in angle steel 7 and the transverse support plate of the inner layer insulation board bracket 1; the spacing of the wedge-shaped groove 8 gradually decreases from the outside to the inside of the inner layer insulation board bracket 1; a slot 10 is provided in the middle of the upper transverse support plate of the outer layer insulation board bracket 2, and the slot 10 can be limited with the spacing reinforcement rib 6. In order to realize the automatic locking of the outer layer insulation board bracket 2 during installation, when the slot 10 is limited with the spacing reinforcement rib 6, since the spacing of the wedge-shaped groove 8 gradually decreases from the outside to the inside of the inner layer insulation board bracket 1, when the outer layer insulation board bracket 2 is struck with a hammer, the upper transverse support plate of the outer layer insulation board bracket 2 is continuously clamped by the plug-in angle steel 7, thereby realizing the automatic locking of the outer layer insulation board bracket 2 during installation.

[0060] like Figure 7 As shown, the vertical support plate in the inner insulation board bracket 1 is provided with circular holes 9 located on both sides of the spacer reinforcement rib 6, and the inner insulation board bracket 1 is fixed to the wall by installing expansion screws in the circular holes 9. In order to achieve the fixation of the inner insulation board bracket 1, the expansion screws can be installed in the circular holes 9 to quickly fix it.

[0061] like Figures 9 and 10 As shown, multiple evenly distributed triangular reinforcing ribs 11 are welded and fixed between the lower horizontal support plate and the vertical support plate of the outer insulation board bracket 2. In order to improve the strength of the outer insulation board bracket 2, the triangular reinforcing ribs 11 are welded to prevent the outer insulation board bracket 2 from deformation.

[0062] like Figures 9 to 11 As shown, both ends of the lower horizontal support plate of the outer insulation board bracket 2 are provided with oblong holes 12, and both ends of the connecting piece 5 are provided with oblong holes 2 13; the outer insulation board bracket 2 and the connecting piece 5 are fixed by installing rivets in the oblong holes 12 and the oblong holes 2 13. In order to achieve the fixation of the outer insulation board bracket 2 and the connecting piece 5, the two can be quickly fixed by installing rivets in the oblong holes 12 and the oblong holes 2 13.

[0063] like Figure 12 to Figure 14As shown, the upper and lower surfaces of the outer insulation board 4 in the width direction are provided with heat flow grooves 15 connected with all the heat conduction holes 14; the connecting sheet 5 is provided with hollow grooves 16 along its length direction; wherein, the width of the heat flow grooves 15 is greater than the width of the connecting sheet 5; wherein, the diameter of the heat conduction holes 14 is greater than the width of the hollow grooves 16. In order to guide the heat to be transferred toward the roof, the heat conduction holes 14 are provided. Due to the air in the heat conduction holes 14, when the heat passes through the outer insulation board 4 to the wall, when the heat is transferred to the heat conduction holes 14, the heat will be preferentially transferred upward along the heat conduction holes 14; in order to further improve the efficiency of the heat conduction holes 14 transferring upward, the heat flow grooves 15 are designed. The heat is first transferred to the heat flow grooves 15 through the heat conduction holes 14, and then transferred to the upper heat conduction holes 14 by the heat flow grooves 15, thereby strengthening the flow of air between the upper and lower heat conduction holes 14, wherein, during the heat transfer process, the connecting sheet 5 will not block the heat transfer.

[0064] A staggered paving construction method, the staggered paving construction method uses the passive building exterior wall for construction, and the specific construction steps are as follows:

[0065] S1. First, lay out the lines for positioning. Set the bracket between each natural layer. Use a laser line projector to determine the horizontal line on the wall as the bottom positioning line of the bracket. Draw a vertical line every 1200mm as the middle positioning line of the bracket.

[0066] S2. Install the inner insulation board bracket 1 according to the positioning line, and use expansion bolts to fix the inner insulation board bracket 1 on the wall surface, wherein the effective fixing depth of the expansion bolts in the base wall should be not less than 50 mm;

[0067] S3, clean the base wall, after the wall is cleaned, place the inner insulation board 3 on both sides of the inner insulation board bracket 1, and then glue the inner insulation board 3 to the wall from one end piece by piece, wherein the inner insulation board 3 is glued in the form of full glue, and the gap between each adjacent inner insulation board 3 is not more than 2mm, and then fill it with foamed polyurethane, and the paving of the inner insulation board 3 is completed. Figure 1 As shown;

[0068] S4, insert the upper transverse support plate of the outer insulation board bracket 2 into the wedge-shaped groove 8 of the inner insulation board bracket 1, and tap it gently with a hammer until the outer insulation board bracket 2 is completely locked;

[0069] S5, use the connecting piece 5 to connect the two adjacent outer insulation board brackets 2, so that the bracket becomes a whole, wherein the connecting piece 5 is quickly fixed by rivets to improve the construction efficiency;

[0070] S6. Place the outer insulation board 4 on the outer insulation board bracket 2 and in the middle of the two inner insulation boards 3. At this time, the gaps between the inner insulation board 3 and the outer insulation board 4 in the vertical direction are staggered; and the lower horizontal support plate of the outer insulation board bracket 2 and the horizontal support plate of the inner insulation board bracket 1 are staggered by 150-250mm. At this time, the gaps between the inner insulation board 3 and the outer insulation board 4 in the horizontal direction are staggered. Then, the outer insulation board 4 is bonded to the inner insulation board 3 piece by piece from one end, wherein the inner insulation board 3 is bonded in the form of full bonding, and the gap between each adjacent two inner insulation boards 3 is not greater than 2mm, and then filled with foamed polyurethane to complete the staggered paving of the insulation board. Figure 3 As shown;

[0071] S7. After the staggered paving of the insulation board is completed, the outer insulation board 4 is treated with a plaster mortar; the prepared plaster mortar is evenly applied to the outer insulation board 4, and then the cut mesh cloth is stretched tightly against the bottom plaster mortar, and the mesh cloth is pressed into the mortar with a spatula while it is wet, and the polymer mortar is smoothed from the middle to the top and bottom, and from left to right;

[0072] S8. When the first layer of finishing mortar is slightly dry and hard enough to touch, the anchor bolts can be installed. After the anchor bolts are installed, the second layer of finishing mortar can be constructed. The construction method of the finishing and mesh is the same as the previous one. After the mesh is filled, use the finishing mortar to smooth it.

[0073] During construction, this method first lays the inner insulation board 3 and then the outer insulation board 4. During the overall laying, the inner and outer insulation boards can be laid almost simultaneously, and the laying is more coordinated. It also reduces the welding or bolt fixing processes in conventional practices, and improves the overall laying efficiency by about 40%.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A passive building exterior wall, comprising an inner insulation board bracket (1) fixed on the wall surface, an outer insulation board bracket (2) being fixedly mounted on the inner insulation board bracket (1); Features: Two mutually symmetrical inner insulation boards (3) are placed on each inner insulation board bracket (1) at the same time, and an outer insulation board (4) is placed on the outer insulation board bracket (2) at a position between the two inner insulation boards (3), and at this time, the gaps between all the inner insulation boards (3) and all the outer insulation boards (4) in the vertical direction are staggered; there is a certain height difference between the transverse support plate in the inner insulation board bracket (1) and the lower transverse support plate in the outer insulation board bracket (2), and at this time, the gaps between all the inner insulation boards (3) and all the outer insulation boards (4) in the horizontal direction are staggered; A connecting piece (5) for supporting the outer insulation board (4) is fixedly installed between each two adjacent outer insulation board brackets (2); The outer thermal insulation board (4) is provided with a plurality of heat conduction holes (14) arranged in a linear array along its width direction.

2. The passive building exterior wall according to claim 1, characterized in that: The inner insulation board bracket (1) is formed by integrally stamping an L-shaped sheet metal; the outer insulation board bracket (2) is formed by integrally stamping an Z-shaped sheet metal; and the connecting piece (5) is formed by integrally stamping an I-shaped sheet metal.

3. The passive building exterior wall according to claim 2, characterized in that: The inner layer insulation board bracket (1) is welded and fixed with a spacing reinforcement rib (6) which divides the left and right sides into equal parts; the left and right side walls of the spacing reinforcement rib (6) are welded and fixed with plug-in angle steels (7), and a wedge-shaped groove (8) is spaced between the plug-in angle steel (7) and the transverse support plate of the inner layer insulation board bracket (1); the spacing of the wedge-shaped grooves (8) gradually decreases from the outside to the inside of the inner layer insulation board bracket (1).

4. The passive building exterior wall according to claim 3, characterized in that: The vertical support plate in the inner insulation board support (1) is provided with circular holes (9) located on both sides of the spacing reinforcement ribs (6), and the inner insulation board support (1) is fixed to the wall by installing expansion screws in the circular holes (9).

5. The passive building exterior wall according to claim 4, characterized in that: A slot (10) is provided in the middle of the upper transverse support plate of the outer thermal insulation board support (2), and the slot (10) can be limitedly matched with the spacing reinforcement rib (6).

6. The passive building exterior wall according to claim 5, characterized in that: A plurality of evenly distributed triangular reinforcing ribs (11) are welded and fixed between the lower transverse support plate and the vertical support plate of the outer thermal insulation board bracket (2).

7. The passive building exterior wall according to claim 6, characterized in that: Both ends of the lower horizontal support plate of the outer insulation board support (2) are provided with an oblong hole one (11), and both ends of the connecting plate (5) are provided with an oblong hole two (12); the outer insulation board support (2) and the connecting plate (5) are fixed by installing rivets in the oblong hole one (11) and the oblong hole two (12).

8. The passive building exterior wall according to claim 7, characterized in that: The upper and lower surfaces of the outer thermal insulation board (4) in the width direction are both provided with heat flow grooves (15) that are connected to all the heat conduction holes (14); and the connecting sheet (5) is provided with a hollow groove (16) along its length direction.

9. The passive building exterior wall according to claim 8, characterized in that: The width of the heat flow groove (15) is greater than the width of the connecting piece (5); and the diameter of the heat conduction hole (14) is greater than the width of the hollow groove (16).

10. A staggered paving construction method, characterized in that: The staggered paving construction method adopts the passive building exterior wall according to claim 9 for construction, and its specific construction steps are as follows: S1. First, lay out the lines for positioning. Set the bracket between each natural layer. Use a laser line projector to determine the horizontal line on the wall as the bottom positioning line of the bracket. Draw a vertical line every 1200mm as the middle positioning line of the bracket. S2. Install the inner insulation board bracket (1) according to the positioning line, and use expansion bolts to fix the inner insulation board bracket (1) on the wall surface, wherein the effective fixing depth of the expansion bolts in the base wall should be not less than 50 mm; S3, cleaning the base wall, after the wall is cleaned, placing the inner insulation board (3) on both sides of the spacer reinforcement rib (6) in the inner insulation board bracket (1), and then gluing the inner insulation board (3) to the wall from one end piece by piece, wherein the inner insulation board (3) is glued in a full gluing manner, and the gap between each adjacent inner insulation board (3) is not greater than 2 mm, and then filling with foamed polyurethane, the paving of the inner insulation board (3) is completed; S4, insert the upper transverse support plate of the outer insulation board bracket (2) into the wedge-shaped groove (8) of the inner insulation board bracket (1), and tap lightly with a hammer until the outer insulation board bracket (2) is completely locked; S5. Use a connecting piece (5) to connect two adjacent outer insulation board brackets (2) so that the bracket becomes a whole, wherein the connecting piece (5) is quickly fixed by rivets to improve construction efficiency; S6. Place the outer insulation board (4) on the outer insulation board bracket (2) and in the middle of the two inner insulation boards (3). At this time, the gaps between the inner insulation board (3) and the outer insulation board (4) in the vertical direction are staggered; and the lower horizontal support plate of the outer insulation board bracket (2) and the horizontal support plate of the inner insulation board bracket (1) are staggered by 150-250mm. At this time, the gaps between the inner insulation board (3) and the outer insulation board (4) in the horizontal direction are staggered. Then, the outer insulation board (4) is bonded to the inner insulation board (3) piece by piece from one end. The inner insulation board (3) is bonded in a full-bonded manner, and the gap between each adjacent inner insulation board (3) is not greater than 2mm. Then, the foamed polyurethane is used for filling. Then, the staggered paving of the insulation board can be completed. S7, after the staggered paving of the insulation board is completed, the outer insulation board (4) is treated with a plaster mortar; the prepared plaster mortar is evenly applied to the outer insulation board (4), and then the cut mesh cloth is stretched tightly against the bottom plaster mortar, and the mesh cloth is pressed into the mortar with a spatula while it is still wet, and the polymer mortar is smoothed from the middle to the top and bottom, and from the left to the right; S8. When the first layer of finishing mortar is slightly dry and hard enough to touch, the anchor bolts can be installed. After the anchor bolts are installed, the second layer of finishing mortar can be constructed. The construction method of the finishing and mesh is the same as the previous one. After the mesh is filled, use the finishing mortar to smooth it.

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