Building external wall thermal insulation structure

Abstract

The invention discloses a building external wall thermal insulation structure, which relates to the technical field of building thermal insulation, and comprises a shell, a back plate fixed on one side of the shell and a thermal insulation plate arranged in the shell, and further comprises a drying mechanism, and the drying mechanism comprises an upper shell and a lower shell which are respectively fixed on the top of the shell; the interior of the shell is fixedly connected with a waterproof plate dividing the internal space of the shell into a pressurizing chamber and a negative pressure chamber, the interior of the upper shell is rotationally connected with a rotating shaft, and the rotating shaft is fixedly connected with a blade plate and a first cam. The heat preservation and heat insulation effects of the heat preservation plate are guaranteed, moisture in the outer wall body can be exhausted, the wall body is prevented from mildewing, in addition, due to the fact that the air pressure in the pressurizing chamber is increased, heat transferred outwards through the pressurizing chamber is reduced, the heat preservation effect is enhanced while the device conducts air exchange and dehumidification, and dehumidification and heat loss are balanced.

Description

Technical Field

[0001] The invention relates to the technical field of building thermal insulation, and in particular to a building exterior wall thermal insulation structure. Background Art

[0002] The exterior wall of a building is the external enclosure structure of a building, which is used to separate the indoor space from the outdoor environment and maintain a relatively stable physical environment indoors. In order to improve the energy-saving performance of the building, a thermal insulation layer is usually installed in the exterior wall, such as polystyrene foam board, rock wool board, polyurethane foam, etc. The thermal insulation layer can effectively reduce the transfer of indoor and outdoor heat and reduce the energy consumption of the building.

[0003] Ordinary buildings can generally achieve a certain insulation effect simply by laying insulation boards on the exterior walls. However, in some areas with humid climates, such as tropical rainforest climate zones or high humidity coastal areas, the water vapor content in the air is high, and the exterior walls and insulation boards easily absorb water vapor and become damp. The presence of insulation boards makes it difficult for moisture in the exterior walls to diffuse and discharge, causing moisture to accumulate between the insulation boards and the exterior walls. This accumulated moisture will not only make it difficult for the insulation boards to exert their insulation effect, but will also increase the indoor air humidity.

[0004] Some buildings with strict requirements on indoor humidity, such as cultural buildings such as museums, libraries, archives, or industrial buildings such as pharmaceutical production workshops and electronic chip manufacturing workshops, the cultural relics, books, medicines and electronic equipment inside the buildings are sensitive to humidity changes. Excessive indoor humidity can easily cause indoor items to become damp and moldy, causing high-value items to be damaged and deteriorate. These buildings are usually equipped with ventilation systems. Therefore, it is necessary to design an insulation structure that can be used in conjunction with the ventilation system to avoid moisture accumulation between the exterior wall and the insulation structure. Summary of the invention

[0005] The purpose of the present invention is to propose a building exterior wall insulation structure to solve the problem that in some humid climate areas, the exterior walls and insulation boards easily absorb water vapor and become damp, and the presence of the insulation board makes it difficult for the moisture in the exterior wall to diffuse and discharge, resulting in moisture accumulation between the insulation board and the exterior wall, increasing the indoor air humidity, causing indoor items to become damp and moldy, and causing high-value items to be damaged and deteriorated.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technology: a building exterior wall insulation structure: comprising an outer shell, a back plate fixed to one side of the outer shell, and an insulation board arranged inside the outer shell, and also comprising:

[0007] A drying mechanism, the drying mechanism comprising an upper shell and a lower shell respectively fixed to the top of the shell, a waterproof plate is fixedly connected to the inside of the shell to divide the internal space into a pressurized chamber and a negative pressure chamber, a rotating shaft is rotatably connected to the inside of the upper shell, a blade and a first cam are fixedly connected to the rotating shaft, and a pressurizing assembly is arranged inside the pressurized chamber of the shell;

[0008] A drainage mechanism, the drainage mechanism comprising a water-absorbing pad fixed to one side of the back plate, and an impeller fixedly connected to the outside of the rotating shaft;

[0009] and two airflow control units respectively arranged at the top and bottom of the housing for controlling the passage of airflow;

[0010] When the airflow passes through the upper shell and enters the pressure chamber of the outer shell, the pressure component squeezes out the moisture inside the insulation board. At the same time, the impeller rotates to suck the air in the negative pressure chamber of the outer shell into the pressure chamber, and the air flow in the pressure chamber brings out the moisture.

[0011] As a further description of the above technology, a building exterior wall insulation structure: the pressurizing component includes a mounting plate slidably connected to the inside of the outer shell, the bottom of the mounting plate is rotatably connected to a wind shield, and the bottom of the mounting plate is fixedly connected to a limit strip for limiting the rotation angle of the wind shield.

[0012] As a further description of the above-mentioned technology, a building exterior wall insulation structure is provided: a spring a is fixedly connected to the bottom of the mounting plate, and a pressing plate pressed on the top of the insulation plate is fixed by the spring a.

[0013] As a further description of the above technology, a building exterior wall insulation structure is provided: one end of the rotating shaft is fixedly connected to a second cam, one side of the back plate is slidably connected to two symmetrically arranged square tubes, one side of the square tube is fixedly connected to a fixed frame, and between the two square tubes are fixedly connected an extrusion strip 1 and an extrusion strip 2 which are respectively clamped on both sides of the absorbent pad, a separation component is provided on the outside of the rotating shaft, and one side of the extrusion strip 2 is fixedly connected to a guide plate.

[0014] As a further description of a building exterior wall insulation structure of the above technology: the separation component includes a water retaining frame fixed to the inside of the outer shell, the outside of the rotating shaft is fixedly connected to a separation cylinder, and the bottom of the water retaining frame is fixedly connected to a water pipe.

[0015] As a further description of the above-mentioned technology, a building exterior wall insulation structure is provided: the airflow control unit includes a connecting pipe that passes through the outer shell and is fixed thereto, a sealing plate is slidably connected to the inside of the connecting pipe, a spring b is provided between the sealing plate and the connecting pipe, and a waterproof cap is fixedly connected to the top of the connecting pipe located at the bottom of the outer shell.

[0016] As a further description of the above technology, a building exterior wall insulation structure is provided: the inner wall of the outer shell and one side of the waterproof board are fixedly connected with a partition, the top of the partition is inclined, and the insulation board slides with the partition when being squeezed and compressed, and the moisture squeezed out of the outer wall of the insulation board is scraped off by the partition.

[0017] As a further description of the above technology, a building exterior wall insulation structure also includes a sealing unit, which includes a piston push rod slidably connected to the inner wall of the shell, and the outer end of the piston push rod is fixedly connected to a sealing belt.

[0018] As a further description of the above-mentioned technology, a building exterior wall insulation structure is provided: a water inlet hole connected to the interior of the second extrusion strip is provided on one side of the square tube, and a collecting trough is provided at the bottom of the negative pressure chamber of the outer shell. When the second extrusion strip squeezes the water absorbent pad, water passes through the second extrusion strip and the water inlet hole and is discharged from the bottom of the square tube.

[0019] As a further description of the above-mentioned technology, a building exterior wall insulation structure also includes a drainage mechanism, which includes a connecting pipe and a drain port respectively fixed to the top and bottom of the outer shell, an elastic sealing sheet is fixedly connected to the inside of the drain port, and a water pressure plate is fixedly connected to the bottom of the square tube.

[0020] In summary, due to the use of the above-mentioned technology, the building exterior wall insulation structure has the following beneficial effects:

[0021] The present application connects the upper shell with the internal ventilation system of the building to accelerate the air flow exchange between the shell pressure chamber and the negative pressure chamber and the outside world, which can not only quickly discharge the moisture on the insulation board, keep the insulation board dry, and ensure the thermal insulation effect of the insulation board, but also discharge the moisture in the exterior wall to prevent moisture from entering the room and causing indoor items to be damaged and deteriorated. In addition, as the air pressure inside the pressure chamber increases, the distance between gas molecules decreases, the frequency of collisions between molecules increases, and the thermal conductivity of the gas is reduced, thereby reducing the heat transfer to the outside through the pressure chamber, so that the device enhances the thermal insulation effect while performing air exchange for dehumidification, and balances dehumidification and heat loss. In addition, the reduced air pressure in the negative pressure chamber helps to discharge moisture in the wall, further reducing the mold, damage and reduced thermal insulation performance of the wall caused by moisture accumulation.

[0022] The pressurizing component can not only squeeze the insulation board, quickly discharge the moisture inside the insulation board when the insulation board is too wet, and restore the insulation effect of the insulation board, but also further increase the pressure inside the pressurizing chamber, so that when the insulation board is squeezed and the internal pressure increases, the external pressure also increases. Through the synergistic effect of the two parts of pressure, the moisture inside the insulation board is discharged more quickly, and the drying speed of the insulation board is increased, so as to enhance the insulation effect. It is worth mentioning that the moisture discharged from the insulation board when it is squeezed is scraped off by the partition, which can prevent the moisture from being absorbed into the pores between the materials again when the insulation board recovers its elastic deformation, thereby ensuring the extrusion and drainage effect of the insulation board;

[0023] The airflow takes away the moisture and drives the impeller to rotate, so that the air in the negative pressure chamber of the shell flows into the pressurized chamber, promoting airflow exchange and further increasing the pressure in the pressurized chamber, thereby improving the heat preservation effect of the pressurized chamber.

[0024] The water absorption pad can directly absorb the water vapor on the outer wall, reduce the moisture content on the outer wall surface when the outer wall is damp and water seeps, reduce the humidity of the wall, and squeeze and drain the water from the water absorption pad through the squeezing strips 1 and 2, so as to prevent the water in the water absorption pad from penetrating into other parts of the wall after absorbing water, reduce the erosion of the wall by water, and the movement of the squeezing strip 2 can accelerate the air flow around the water absorption pad, thereby accelerating the evaporation and discharge of water, and improving the dehumidification effect. In addition, the movement of the guide plate can disperse and gather the surrounding airflow, so that the airflow inside the negative pressure chamber is dispersed and flows, and the airflow uniformity is improved to achieve uniform dehumidification;

[0025] The rotation of the separation cylinder can separate large water droplets in the air discharged from the negative pressure chamber, preventing the water droplets from increasing the moisture level of the insulation board and ensuring the drying effect of the insulation board. In addition, when the water pressure plate descends, the water in the collection tank can be squeezed out to achieve automatic drainage. During this process, air will not enter the negative pressure chamber from the drain port, so that the airflow inside the shell remains stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It shows an overall top schematic diagram provided according to an embodiment of the present invention;

[0027] Figure 2 It shows an overall bottom schematic diagram provided according to an embodiment of the present invention;

[0028] Figure 3 It shows a schematic diagram of an overall three-dimensional cross-section provided according to an embodiment of the present invention;

[0029] Figure 4 The embodiment of the present invention provides Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5The embodiment of the present invention provides Figure 3 Enlarged view of point B in the middle;

[0031] Figure 6 A schematic diagram of partition arrangement according to an embodiment of the present invention is shown;

[0032] Figure 7 The embodiment of the present invention provides Figure 6 Enlarged view of point C in the middle;

[0033] Figure 8 A schematic diagram of a pressurizing assembly provided according to an embodiment of the present invention is shown;

[0034] Fig. 9 A schematic diagram of a separation cylinder provided according to an embodiment of the present invention is shown;

[0035] Fig.10 A schematic diagram of a guide plate provided in an embodiment of the present invention is shown;

[0036] Fig.11 The embodiment of the present invention provides Fig.10 Enlarged view of point D in the middle;

[0037] Fig.12 The embodiment of the present invention provides Fig.10 Enlarged view of point E in the middle.

[0038] Legend:

[0039] 10. Shell; 11. Back panel; 12. Insulation board;

[0040] 20. Drying mechanism; 21. Upper shell; 22. Lower shell; 23. Waterproof plate; 24. Rotating shaft; 25. Blade; 26. First cam; 27. Pressurizing assembly; 271. Mounting plate; 272. Wind deflector; 273. Limiting strip; 274. Spring a; 275. Pressing plate; 28. Partition plate;

[0041] 30. Drain mechanism; 31. Water absorption pad; 32. Second cam; 33. Square tube; 34. Fixed frame; 35. Extrusion strip 1; 36. Extrusion strip 2; 37. Impeller; 38. Separation assembly; 381. Water retaining outer frame; 382. Separation cylinder; 383. Water pipe; 39. Guide plate;

[0042] 40. air flow control unit; 41. connecting pipe; 42. sealing plate; 43. spring b; 44. waterproof cap;

[0043] 50. Sealing unit; 51. Piston push rod; 52. Sealing belt;

[0044] 60. Drainage mechanism; 61. Water pressure plate; 62. Drainage outlet; 63. Elastic sealing sheet; 64. Connecting pipe. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technology in the embodiments of the present invention, a building exterior wall insulation structure. 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.

[0046] like Figure 1-Figure 12 As shown, the present invention provides a building exterior wall insulation structure: comprising an outer shell 10, a back plate 11 fixed to one side of the outer shell 10, and an insulation board 12 arranged inside the outer shell 10, the back plate 11 is provided with holes, which improves the fastness of the back plate 11 fixed to the outer wall by cement, the insulation board 12 material itself has elasticity, and the air is bound by the internal holes to reduce the flow of air, thereby reducing heat convection and heat conduction, and achieving the insulation effect, and also includes:

[0047] The drying mechanism 20 includes an upper shell 21 and a lower shell 22 respectively fixed to the top of the shell 10. When a plurality of shells 10 are laid up and down, the lower shell 22 can be sleeved on the outside of the upper shell 21 to improve the neatness and firmness between the multiple structures. The inside of the shell 10 is fixedly connected with a waterproof plate 23 which divides the internal space into a pressurized chamber and a negative pressure chamber. After the upper shell 21 and the lower shell 22 are connected, the vents are interconnected, so that the pressurized chambers inside the upper and lower shells 10 are interconnected, which is convenient for airflow to pass through. The upper shell 21 is rotatably connected with a rotating shaft 24, and a vane 25 and a first cam 26 are fixedly connected to the rotating shaft 24. The vent of the upper shell 21 is located above the vane 25 on one side of the rotating shaft 24. Therefore, the airflow entering the upper shell 21 can only blow the vane 25 on one side of the rotating shaft 24, thereby driving the rotating shaft 24 to rotate. A pressurizing component 27 is arranged inside the pressurized chamber of the shell 10.

[0048] The drain mechanism 30 includes a water absorbing pad 31 fixed to one side of the back plate 11, and an impeller 37 is fixedly connected to the outside of the rotating shaft 24;

[0049] and two airflow control units 40 respectively disposed at the top and bottom of the housing 10 for controlling the passage of air;

[0050] When the air flows through the upper shell 21 and enters the pressurized chamber of the outer shell 10, the pressurizing component 27 squeezes out the moisture inside the insulation board 12. At the same time, the impeller 37 rotates to suck the air in the negative pressure chamber of the outer shell 10 into the pressurized chamber. The air flow in the pressurized chamber brings out the moisture, and the reduced air pressure in the negative pressure chamber helps to discharge the moisture in the wall.

[0051] Reference Figure 3 and Figure 8 The pressurizing assembly 27 includes a mounting plate 271 slidably connected to the inside of the housing 10, a windshield 272 is rotatably connected to the bottom of the mounting plate 271, a limit strip 273 is fixedly connected to the bottom of the mounting plate 271 to limit the rotation angle of the windshield 272, and the size of the gap between the windshield 272 and the mounting plate 271 for air to pass through is controlled, a spring a274 is fixedly connected to the bottom of the mounting plate 271, and a pressing plate 275 pressed on the top of the insulation board 12 is fixedly fixed by the spring a274, and when the rotating shaft 24 rotates, the first cam 26 is driven to rotate to install The mounting plate 271 is pressed downward, and the pressure plate 275 is pressed downward by the spring a274 to squeeze the insulation plate 12, thereby promoting the discharge of moisture inside the insulation plate 12. When the insulation plate 12 is squeezed, the insulation plate 12 itself is compressed, and the spring a274 is compressed at the same time. When the first cam 26 continues to rotate and no longer presses the mounting plate 271, the elastic force of the insulation plate 12 and the elastic force of the spring a274 drive the mounting plate 271 to reset. The spring a274 is also used to limit the pressure of the pressure plate 275 on the insulation plate 12 to avoid excessive pressure that causes damage to the insulation plate 12 and makes it difficult to recover from deformation.

[0052] When the mounting plate 271 moves downward, the wind shield 272 rotates due to the upward thrust of the airflow, so that the gap between the mounting plate 271 and the wind shield 272 is closed. At this time, the downward movement of the mounting plate 271 and the wind shield 272 can push the air inside the pressurized chamber of the shell 10, increase the pressure inside the pressurized chamber, increase the extrusion of the insulation plate 12, promote the discharge of moisture, and increase the movement resistance between molecules, thereby enhancing the insulation effect of the pressurized chamber and balancing the reduction in insulation effect caused by dehumidification through air flow. When the mounting plate 271 moves upward, the wind shield 272 deflects downward under the action of airflow resistance, so that the gap between the mounting plate 271 and the wind shield 272 is reopened. During this process, air discharged from the external ventilation system continuously enters the pressurized chamber. Therefore, the upward movement of the mounting plate 271 and the wind shield 272 will not cause a significant decrease in the pressure inside the pressurized chamber, thereby ensuring the pressurization effect of the mounting plate 271 and the wind shield 272.

[0053] Reference Figure 4 and Fig.10A second cam 32 is fixedly connected to one end of the rotating shaft 24, and two symmetrically arranged square tubes 33 are slidably connected to one side of the back plate 11. A fixed frame 34 is fixedly connected to one side of the square tube 33. An extrusion strip 1 35 and an extrusion strip 2 36 are fixedly connected between the two square tubes 33 and are respectively clamped on both sides of the water-absorbing pad 31. A separation component 38 is arranged on the outside of the rotating shaft 24, and a guide plate 39 is fixedly connected to one side of the extrusion strip 2 36. When the rotating shaft 24 rotates, the second cam 32 is driven to rotate, so that the fixed frame 34 drives the square tube 33, the extrusion strip 1 35 and the extrusion strip 2 36 to move up and down. The squeeze bar 1 35 and the squeeze bar 2 36 clamp the water absorbent pad 31, so the squeeze bar 1 35 and the squeeze bar 2 36 move up and down to squeeze out the water in the water absorbent pad 31, thereby accelerating the dehumidification of the outer wall and preventing the water absorbent pad 31 from absorbing too much water and wetting the non-water-seeping position of the outer wall, causing the wall to become damp. The movement of the squeeze bar 2 36 can accelerate the air flow around the water absorbent pad 31, thereby accelerating the evaporation and discharge of water, and the guide plate 39 moves with the squeeze bar 2 36 to promote the airflow in the negative pressure chamber, so that the airflow inside the negative pressure chamber flows in a dispersed manner, the airflow path is extended, and the airflow uniformity is improved.

[0054] In order to prevent the squeezed water from being absorbed by the absorbent pad 31 again when the squeezed bar 1 35 and the squeezed bar 2 36 are drained, a guide groove is provided on the squeezed bar 2 36 so that the squeezed water can flow into the guide groove.

[0055] Reference Fig.12 A water inlet hole connected to the inside of the second extrusion strip 36 is provided on one side of the square tube 33. The middle height of the guide groove is greater than the height at both ends, so that water will flow toward the two ends after entering the guide groove, and then enter the second extrusion strip 36 through the water inlet hole and be discharged to the bottom of the negative pressure chamber. A collecting groove is provided at the bottom of the negative pressure chamber of the outer shell 10. When the second extrusion strip 36 squeezes the water-absorbing pad 31, the water passes through the second extrusion strip 36 and the water inlet hole and is discharged from the bottom of the square tube 33 to the collecting groove.

[0056] Reference Figure 4 and Fig. 9 In order to prevent the humid air in the negative pressure chamber from entering the pressurized chamber and increasing the humidity of the insulation board 12, the separation component 38 includes a water retaining frame 381 fixed to the inside of the outer shell 10, and a separation cylinder 382 is fixedly connected to the outside of the rotating shaft 24, and a water pipe 383 is fixedly connected to the bottom of the water retaining frame 381. The separation cylinder 382 drives the surrounding air to rotate as the rotating shaft 24 rotates, so that large particles of water droplets in the air are thrown out to the inner wall of the water retaining frame 381 under the action of centrifugal force, thereby realizing the separation of large particles of water droplets from the air and reducing the humidity of the air discharged from the negative pressure chamber. The water pipe 383 is used to divert water to the bottom of the negative pressure chamber to avoid splashing of water droplets and increasing the humidity of the air inside the negative pressure chamber.

[0057] Reference Figure 5The air flow control unit 40 includes a connecting pipe 41 that penetrates the outer shell 10 and is fixed thereto, and the negative pressure chambers of the upper and lower outer shells 10 can be connected through the connecting pipe 41, and a sealing plate 42 is slidably connected inside the connecting pipe 41, and a spring b43 is provided between the sealing plate 42 and the connecting pipe 41, and a waterproof cap 44 for preventing water droplets from entering the connecting pipe 41 is fixedly connected to the top of the connecting pipe 41 located at the bottom of the outer shell 10. Both sets of air flow control units 40 can only allow air flow to pass through when the air flow flows from bottom to top. The purpose of this design is to prevent the impeller 37 in the uppermost outer shell 10 from directly sucking in the outside air through the air flow control unit 40 at its top when rotating. Therefore, each impeller 37 can only rotate to attract the air inside the negative pressure chamber from bottom to top, thereby accelerating the air flow rate around the water absorbent pad 31 located inside the negative pressure chamber, thereby improving the dehumidification effect.

[0058] Reference Figure 3 and Figure 6 The inner wall of the shell 10 and one side of the waterproof plate 23 are fixedly connected with a partition 28. The top of the partition 28 is inclined. When the insulation board 12 is squeezed and compressed, it slides with the partition 28. The moisture squeezed out of the outer wall of the insulation board 12 is scraped off by the partition 28, so that the moisture is separated from the insulation board 12 to avoid being sucked into the insulation board 12 again, thereby enhancing the drying effect of the insulation board 12. At the same time, the partition 28 divides the internal space of the pressurized chamber, extends the path of the airflow, and enables the airflow to evenly carry out moisture when passing through the interior of the pressurized chamber, thereby improving the dehumidification effect.

[0059] Reference Figure 7 , and also includes a sealing unit 50, which includes a piston push rod 51 slidably connected to the inner wall of the shell 10, and a sealing belt 52 is fixedly connected to the outer end of the piston push rod 51. The chamber where the piston push rod 51 is located is connected to the internal pressurized chamber of the shell 10. When the internal pressure of the pressurized chamber increases, the piston push rod 51 applies an outward thrust to the sealing belt 52, thereby improving the sealing between adjacent shells 10 through the sealing belt 52, thereby improving the thermal insulation effect of the insulation structure.

[0060] Reference Fig.11 and Fig.12, and also includes a drainage mechanism 60, which includes a connecting pipe 64 and a drainage port 62 respectively fixed to the top and bottom of the shell 10, an elastic sealing sheet 63 is fixedly connected inside the drainage port 62, and a water pressure plate 61 is fixedly connected to the bottom of the square tube 33. When the water pressure plate 61 moves downward with the square tube 33, it can squeeze the water in the collection tank, so that the elastic sealing sheet 63 is pressurized to open the water and squeeze out the water from the drainage port 62. In this process, since the water pressure plate 61 blocks the collection tank, the outside air will not enter the negative pressure chamber of the shell 10 through the drainage port 62. The connecting pipe 64, the square tube 33 and the drainage port 62 are located in a straight line, and the connecting pipe 64 is inserted at the top of the square tube 33. When several shells 10 are laid vertically, the water will enter the connecting pipe 64 below and enter another square tube 33 after being discharged through the drainage port 62, so as to flow downward until the water is discharged from the lowest shell 10, and the elastic sealing sheet 63 is closed by its own elasticity when the pressure is lost to prevent the outside air from entering.

[0061] Working principle: The vent of the upper shell 21 is connected to the exhaust pipe of the building ventilation system. The exhausted air passes through the upper shell 21 and the holes on the pressurizing assembly 27 into the pressurized chamber of the housing 10, increasing the pressure in the pressurized chamber. The air is then discharged from the vent of the lower shell 22. During this process, the airflow pushes the blade 25 to drive the rotating shaft 24 to rotate, thereby driving the first cam 26, the impeller 37, the separation cylinder 382 and the second cam 32 to rotate together.

[0062] The first cam 26 rotates to press the mounting plate 271 downward, driving the spring a274 to press the pressing plate 275 downward to squeeze the insulation plate 12, thereby promoting the discharge of moisture inside the insulation plate 12. When squeezing the insulation plate 12, the insulation plate 12 itself is compressed, and the spring a274 is compressed at the same time. When the first cam 26 continues to rotate and no longer presses the mounting plate 271, the elastic force of the insulation plate 12 and the elastic force of the spring a274 drive the mounting plate 271 and the pressing plate 275 to reset.

[0063] When the mounting plate 271 moves downward, the wind shield 272 is pushed upward by the airflow and rotates, closing the gap between the mounting plate 271 and the wind shield 272. At this time, the downward movement of the mounting plate 271 and the wind shield 272 can push the air inside the pressurized chamber of the housing 10, increasing the pressure inside the pressurized chamber. When the mounting plate 271 moves upward, the wind shield 272 deflects downward under the action of the airflow resistance, reopening the gap between the mounting plate 271 and the wind shield 272. During this process, the air exhausted by the external ventilation system continuously enters the pressurized chamber. Therefore, the upward movement of the mounting plate 271 and the wind shield 272 will not cause a significant decrease in the pressure inside the pressurized chamber.

[0064] The impeller 37 rotates to transport the air in the negative pressure chamber of the housing 10 to the pressurized chamber, increasing the air pressure in the pressurized chamber and reducing the pressure in the negative pressure chamber. When the pressure in the negative pressure chamber is reduced, the outside air pushes the connecting pipe 41 at the bottom of the housing 10 upward and enters the negative pressure chamber, realizing air circulation inside the negative pressure chamber;

[0065] The second cam 32 rotates to drive the fixed frame 34, the square tube 33, the first extrusion strip 35, the second extrusion strip 36 and the guide plate 39 to move up and down. Since the first extrusion strip 35 and the second extrusion strip 36 clamp the water-absorbing pad 31, the first extrusion strip 35 and the second extrusion strip 36 squeeze out the water in the water-absorbing pad 31 during the up and down movement, accelerating the moisture removal of the external wall. The drained water enters the guide groove of the second extrusion strip 36, and then enters the second extrusion strip 36 through the water inlet hole and is uniformly discharged to the collection groove of the negative pressure chamber;

[0066] When the water pressure plate 61 moves downward with the square tube 33, it can squeeze the water in the collection tank, so that the elastic sealing sheet 63 is pressurized to open and squeeze the water out of the drain port 62. In this process, since the water pressure plate 61 blocks the collection tank, the outside air will not enter the negative pressure chamber of the outer shell 10 through the drain port 62. After being discharged through the drain port 62, the water will enter the connecting pipe 64 below and enter another square tube 33, thereby flowing downward until the water is discharged from the outer shell 10 at the lowest point.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention, according to the technical a building exterior wall insulation structure and its inventive concept, shall be equivalently replaced or changed, and shall be covered by the protection scope of the present invention.

Claims

1. A building exterior wall insulation structure, comprising an outer shell (10), a back plate (11) fixed to one side of the outer shell (10), and an insulation plate (12) arranged inside the outer shell (10), characterized in that: Also includes: A drying mechanism (20), the drying mechanism (20) comprising an upper shell (21) and a lower shell (22) respectively fixed to the top of the shell (10); a waterproof plate (23) is fixedly connected to the inside of the shell (10) to divide the internal space thereof into a pressurized chamber and a negative pressure chamber; a rotating shaft (24) is rotatably connected to the inside of the upper shell (21); a blade (25) and a first cam (26) are fixedly connected to the rotating shaft (24); a pressurizing assembly (27) is arranged inside the pressurized chamber of the shell (10); A drainage mechanism (30), the drainage mechanism (30) comprising a water-absorbing pad (31) fixed to one side of the back plate (11), and an impeller (37) fixedly connected to the outside of the rotating shaft (24); and two airflow control units (40) respectively arranged at the top and bottom of the housing (10) for controlling the passage of airflow; When the airflow passes through the upper shell (21) and enters the pressurized chamber of the outer shell (10), the pressurizing component (27) squeezes out the moisture inside the insulation board (12), and at the same time, the impeller (37) rotates to draw the air in the negative pressure chamber of the outer shell (10) into the pressurized chamber, and the air flow in the pressurized chamber brings out the moisture.

2. A building exterior wall insulation structure according to claim 1, characterized in that: The pressurizing component (27) comprises a mounting plate (271) slidably connected to the inside of the housing (10); a windshield plate (272) is rotatably connected to the bottom of the mounting plate (271); and a limit strip (273) for limiting the rotation angle of the windshield plate (272) is fixedly connected to the bottom of the mounting plate (271).

3. A building exterior wall insulation structure according to claim 2, characterized in that: The bottom of the mounting plate (271) is fixedly connected to a spring a (274), and a pressing plate (275) pressed on the top of the insulation plate (12) is fixed via the spring a (274).

4. A building exterior wall insulation structure according to claim 1, characterized in that: One end of the rotating shaft (24) is fixedly connected to a second cam (32); one side of the back plate (11) is slidably connected to two symmetrically arranged square tubes (33); one side of the square tube (33) is fixedly connected to a fixing frame (34); between the two square tubes (33) are fixedly connected an extrusion strip 1 (35) and an extrusion strip 2 (36) which are respectively clamped on both sides of the water absorbent pad (31); a separation assembly (38) is arranged outside the rotating shaft (24); one side of the extrusion strip 2 (36) is fixedly connected to a guide plate (39).

5. A building exterior wall insulation structure according to claim 4, characterized in that: The separation assembly (38) comprises a water retaining outer frame (381) fixed inside the outer shell (10), a separation cylinder (382) is fixedly connected to the outside of the rotating shaft (24), and a water pipe (383) is fixedly connected to the bottom of the water retaining outer frame (381).

6. A building exterior wall insulation structure according to claim 1, characterized in that: The airflow control unit (40) comprises a connecting pipe (41) penetrating through the housing (10) and fixed thereto, a sealing plate (42) is slidably connected inside the connecting pipe (41), a spring b (43) is provided between the sealing plate (42) and the connecting pipe (41), and a waterproof cap (44) is fixedly connected to the top of the connecting pipe (41) located at the bottom of the housing (10).

7. A building exterior wall insulation structure according to claim 2, characterized in that: The inner wall of the shell (10) and one side of the waterproof plate (23) are both fixedly connected with a partition (28), the top of the partition (28) is inclined, and the insulation board (12) slides with the partition (28) when it is squeezed and compressed, and the moisture squeezed out of the outer wall of the insulation board (12) is scraped off by the partition (28).

8. The building exterior wall insulation structure according to claim 1, characterized in that: It also comprises a sealing unit (50), wherein the sealing unit (50) comprises a piston push rod (51) slidably connected to the inner wall of the housing (10), and a sealing belt (52) is fixedly connected to the outer end of the piston push rod (51).

9. The building exterior wall insulation structure according to claim 4, characterized in that: A water inlet hole communicating with the interior of the second squeezing strip (36) is provided on one side of the square tube (33); a collecting groove is provided at the bottom of the negative pressure chamber of the housing (10); when the second squeezing strip (36) squeezes the water-absorbing pad (31), water passes through the second squeezing strip (36) and the water inlet hole and is discharged from the bottom of the square tube (33).

10. A building exterior wall insulation structure according to claim 9, characterized in that: It also includes a drainage mechanism (60), the drainage mechanism (60) including a connecting pipe (64) and a drainage port (62) respectively fixed to the top and bottom of the housing (10), the interior of the drainage port (62) is fixedly connected to an elastic sealing sheet (63), and the bottom of the square tube (33) is fixedly connected to a water pressure plate (61).

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