A green building ventilation energy-saving system and its use method

Abstract

The present application belongs to the technical field of ventilation systems, and discloses a ventilation and energy-saving system for green buildings and a method for using the same, including a building wall, a ventilation opening formed through the building wall, an accelerated ventilation assembly provided in the ventilation opening, the accelerated ventilation assembly including a cross body provided in the ventilation opening, a motor fixed on the cross body, and ventilation fan blades fixed to the end of the output shaft of the motor; a cavity is provided in the building wall that is connected to the bottom of the ventilation opening and is used to accommodate the accelerated ventilation assembly, and a drive assembly for receiving the accelerated ventilation assembly in the cavity is provided in the cavity. When the accelerated ventilation assembly of the present application has not been used for a long time, the staff only needs to receive the accelerated ventilation assembly in the cavity through the drive assembly, and the ventilation fan blades are received in the cavity, which reduces the probability of the surface of the ventilation fan blades being covered with debris such as spider webs, dust, and catkins, is beneficial to the normal use of the subsequent ventilation system, and improves the ventilation air quality to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation systems, and in particular to a ventilation energy-saving system for a green building and a method of using the same. Background Art

[0002] Ventilation is a building environmental control technology that uses ventilation dilution or ventilation removal to control the spread and harmful effects of air pollutants, ensuring indoor and outdoor air quality. A ventilation system, designed to achieve this function, comprises a complete set of devices, including air inlets, exhaust vents, air ducts, fans, cooling and heating systems, filters, control systems, and other ancillary equipment.

[0003] With the development of construction technology, factory buildings are also equipped with pre-set ventilation holes. In order to increase the speed of gas circulation, ventilation fans are usually fixed in the ventilation holes. When an emergency occurs and the factory needs to suspend work for a period of time, the ventilation fans are still located in the ventilation holes. After a long time, the surface of the ventilation fans is easily covered with spider webs, dust, catkins and other debris, which has a certain impact on the normal use of the subsequent ventilation system and the quality of the ventilated air, which is not conducive to use. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a ventilation energy-saving system for a green building and a method of using the same.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a ventilation and energy-saving system for a green building and a method of using the same, comprising a building wall having a ventilation opening formed therethrough, an accelerated ventilation assembly disposed within the ventilation opening, the accelerated ventilation assembly comprising a cross body disposed within the ventilation opening, a motor fixed to the cross body, and ventilation fan blades fixed to the end of the output shaft of the motor;

[0006] A cavity is provided in the building wall, which is communicated with the bottom of the vent and is used to accommodate the accelerated ventilation component. A driving component is provided in the cavity to accommodate the accelerated ventilation component in the cavity.

[0007] By adopting the above technical solution, when the accelerated ventilation component has not been used for a long time, the staff only needs to store the accelerated ventilation component into the cavity through the driving component, and the ventilation fan blades are stored into the cavity, which reduces the probability of the surface of the ventilation fan blades being covered with spider webs, dust, catkins and other debris, is conducive to the normal use of the subsequent ventilation system, and improves the ventilation air quality to a certain extent.

[0008] Furthermore, a mounting block is fixed to the inner wall of the cavity, and the driving assembly includes a traction rope that passes through the mounting block and is loosely fitted with the mounting block, a spring sleeved on the traction rope, and a pull ring fixed to the lower end of the traction rope. The upper end of the traction rope is fixed to the lower end of the vertical part of the cross body, and an L-shaped connecting groove that communicates with the cavity is opened on the side wall of the building wall, and the pull ring is located in the L-shaped connecting groove.

[0009] By adopting the above technical solution, when the accelerated ventilation component can be stored in the cavity using the drive component, the staff only needs to pull the cross body through the pull ring and the traction rope, and the spring is gradually compressed by the cross body and the mounting block, so that the cross body, motor, and ventilation fan blades are all stored in the cavity, thereby reducing the probability of the surface of the ventilation fan blades being covered with spider webs, dust, catkins and other debris.

[0010] Furthermore, the side walls on both sides of the cavity are provided with sliding grooves that are slidably connected to the cross body, and a guide assembly is installed in the cavity and the L-shaped connecting groove. The guide assembly includes a first rod body fixed to the side wall of the cavity, a first pulley rotatably installed at the end of the first rod body, a second rod body fixed to the bottom wall of the L-shaped connecting groove, and a second pulley rotatably installed at the end of the second rod body. The traction rope passes around the first pulley and the second pulley in turn, and a positioning rod is fixed on the inner wall of the vertical part of the L-shaped connecting groove, and the pull ring is hooked with the positioning rod.

[0011] By adopting the above technical solution, the cross body is slidably connected to the slide groove, which reduces the probability of the cross body tilting during the lifting process. The traction rope passes around the first pulley and the second pulley in turn. The first pulley and the second pulley work together to enhance the stability of the traction rope during the lifting process of the cross body. The positioning rod is hooked with the pull ring, which enhances the stability of the accelerated ventilation assembly during use.

[0012] Furthermore, a baffle is fixed to the upper end of the vertical part of the cross body, an upper groove cooperating with the baffle is provided on the inner top wall of the vent, a lower groove cooperating with the baffle is provided on the inner bottom wall of the vent, and two positioning rods are provided, and the lower positioning rod is located near the bottom of the vertical part of the L-shaped connecting groove.

[0013] By adopting the above technical solution, the baffle cooperates with the lower groove, and the cross body, motor, and ventilation fan blades are all stored in the cavity. The baffle has a good shielding effect on spider webs, dust, and catkins, so that the motor and ventilation fan blades remain clean, which is conducive to subsequent normal use.

[0014] Furthermore, a cleaning soft brush is fixed to the inner wall of the cavity. When the accelerated ventilation component completely enters the cavity, the bristles of the cleaning soft brush press tightly against the ventilation blades.

[0015] By adopting the above technical solution, after the cross body, motor, and ventilation fan blades are all stored in the cavity, the bristles of the cleaning soft brush are pressed against the ventilation fan blades. The staff turns on the motor and drives the ventilation fan blades to rotate. The bristles of the cleaning soft brush can clean the surface of the ventilation fan blades, which is conducive to maintaining normal use in the future.

[0016] Furthermore, a main water pipe connected to an external water supply system and a branch water pipe fixed to and connected to the main water pipe are pre-buried in the building wall, and the cleaning soft brush is provided with a perforation for the branch water pipe to pass through.

[0017] By adopting the above technical solution, the external water supply system sprays water through the main water pipe and the branch water pipe, which is conducive to the cleaning soft brush to fully clean the surface of the ventilation fan blade.

[0018] Furthermore, a mounting groove is provided on the side wall of the building wall, a sewage tank is provided in the mounting groove, and a fixing member for fixing the sewage tank is provided on the building wall;

[0019] The height of the upper surface of the mounting block decreases from the inside of the cavity toward the side close to the sewage tank. Two water retaining bars are fixed on the top of the mounting block. The water retaining bars are located near the edge of the mounting block. A water inlet hole is opened on the side wall of the sewage tank near the top of the mounting block. A connecting hole for connecting the water inlet hole and the cavity is opened in the building wall.

[0020] By adopting the above technical solution, the upper surface of the mounting block is inclined toward the side close to the sewage tank, and water retaining bars are fixed on both sides of the top of the mounting block, so that the sewage generated during the cleaning process enters the sewage tank through the connecting through hole and the water inlet through hole, so that the staff can subsequently adjust the fixings and remove the sewage tank to clean the sewage in a centralized manner.

[0021] Furthermore, a water outlet is provided on the side wall of the sewage tank near the bottom thereof, and a water stopper is provided on the sewage tank to be plugged into and matched with the water outlet;

[0022] A first movable groove connected to the installation groove is opened on the side wall of the building wall, and a second movable groove connected to the first movable groove is opened on the outer wall of the sewage tank. The fixing member is a limit block rotatably installed on the building wall and abutting against the side wall of the second movable groove.

[0023] By adopting the above technical solution, the staff can pour out the sewage in the sewage tank by opening the water stop plug, and the side wall of the limit block abuts against the side wall of the second movable groove on the sewage tank, thereby enhancing the stability of the sewage tank during use. After the staff turns the limit block, the sewage tank can be removed and cleaned.

[0024] Furthermore, the bottom of the sewage tank is tilted, the height of the sewage tank close to the cavity is greater than the height of the other side of the sewage tank, and a rubber shielding sheet is fixed to the inner wall of the vertical portion of the L-shaped connecting groove.

[0025] By adopting the above technical solution, the sewage in the sewage tank is facilitated to be fully discharged from the water outlet, and the rubber shielding sheet shields the traction rope, pull ring and positioning rod, thereby enhancing the cleanliness of the building wall surface.

[0026] A method for using a ventilation and energy-saving system for a green building. When the accelerated ventilation component is not needed for a long time, the staff needs to open the rubber shielding sheet and pull the cross body through the pull ring and the traction rope so that the cross body slides down along the slide groove into the cavity until the baffle is matched with the lower groove. At this time, the staff can hook the pull ring with the positioning rod on the lower side.

[0027] By adopting the above technical solution, the ventilation fan blades are stored in the cavity, which reduces the probability of the ventilation fan blade surface being covered with debris such as spider webs, dust, and catkins.

[0028] In summary, the present invention has the following beneficial effects:

[0029] 1. In this application, when the accelerated ventilation component is not used for a long time, the staff only needs to store the accelerated ventilation component into the cavity through the driving component, and the ventilation fan blades are stored in the cavity, which reduces the probability of the surface of the ventilation fan blades being covered with spider webs, dust, catkins and other debris, is conducive to the normal use of the subsequent ventilation system, and improves the ventilation air quality to a certain extent;

[0030] 2. In this application, when the driving assembly is used to store the accelerated ventilation assembly into the cavity, the staff only needs to pull the cross body through the pull ring and the traction rope, and the spring is gradually compressed by the cross body and the mounting block, so that the cross body, the motor, and the ventilation fan blades are all stored in the cavity, thereby reducing the probability of the ventilation fan blade surface being covered with spider webs, dust, catkins and other debris;

[0031] 3. In this application, by opening the water stop plug, the staff can pour out the sewage in the sewage tank. The side wall of the limit block abuts against the side wall of the second movable groove on the sewage tank, which enhances the stability of the sewage tank during use. After the staff turns the limit block, the sewage tank can be removed and cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0033] Figure 2 1 is a schematic cross-sectional structural diagram of an embodiment of the present invention;

[0034] Figure 3 yes Figure 2Enlarged schematic diagram of point A in the middle.

[0035] In the figure: 1. Building wall; 11. Ventilation opening; 111. Upper groove; 112. Lower groove; 12. Cavity; 121. Cleaning brush; 1211. Perforation; 13. L-shaped connecting groove; 131. Positioning rod; 132. Rubber shield; 14. Slide; 15. Mounting groove; 16. Fixing member; 17. Connecting hole; 18. First movable groove; 2. Accelerated ventilation assembly; 21. Cross body; 211. Baffle ; 22. Motor; 23. Ventilation blades; 3. Mounting block; 31. Water retaining bar; 4. Driving assembly; 41. Traction rope; 42. Spring; 43. Pull ring; 5. Guide assembly; 51. First rod body; 52. First pulley; 53. Second rod body; 54. Second pulley; 6. Main water pipe; 61. Branch water pipe; 7. Sewage tank; 71. Water inlet hole; 72. Water outlet hole; 73. Water stop plug; 74. Second movable groove. Implementation Method

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] like Figure 1-3 As shown, the embodiment of the present application discloses a ventilation and energy-saving system for a green building, comprising a building wall 1, an accelerated ventilation assembly 2, a mounting block 3, a drive assembly 4, and a guide assembly 5. A vent 11 is provided through the building wall 1, and the accelerated ventilation assembly 2 is disposed in the vent 11. The accelerated ventilation assembly 2 comprises a cross body 21, a motor 22, and ventilation blades 23. The cross body 21 is in the shape of a cross, and the cross body 21 is disposed in the vent 11. The motor 22 is fixed to the cross body 21, and the end of the output shaft of the motor 22 passes through the cross body 21 and is rotatably connected to the cross body 21, and the ventilation blades 23 are fixed to the end of the output shaft of the motor 22.

[0038] In this embodiment, a mounting block 3 is fixed to the inner wall of cavity 12. A cavity 12 is defined within building wall 1, communicating with the bottom of vent 11 and accommodating accelerated ventilation assembly 2. A drive assembly 4 is disposed within cavity 12 to receive accelerated ventilation assembly 2 therein. Drive assembly 4 includes a traction rope 41, a spring 42, and a pull ring 43. Traction rope 41 extends through mounting block 3 and is loosely fitted therewith. The upper end of traction rope 41 is secured to the lower end of the vertical portion of cross body 21. The upper end of spring 42 abuts the lower end of the vertical portion of cross body 21, while the lower end of spring 42 abuts the top of mounting block 3. Spring 42 is sleeved onto traction rope 41. A pull ring 43 is secured to the lower end of traction rope 41. An L-shaped connecting groove 13 is defined on the sidewall of building wall 1, communicating with cavity 12, and pull ring 43 is positioned within L-shaped connecting groove 13.

[0039] In this embodiment, the side walls on both sides of the cavity 12 are provided with sliding grooves 14 that are slidingly connected to the cross body 21. When the accelerated ventilation component 2 has not been used for a long time, the staff only needs to pull the cross body 21 through the pull ring 43 and the traction rope 41. The cross body 21 slides downward along the sliding groove 14, and the spring 42 is gradually compressed by the cross body 21 and the mounting block 3, so that the cross body 21, the motor 22, and the ventilation fan blades 23 are all stored in the cavity 12, thereby reducing the probability of the surface of the ventilation fan blades 23 being covered with spider webs, dust, catkins and other debris, which is conducive to the normal use of the subsequent ventilation system and improves the ventilation air quality to a certain extent.

[0040] The guide assembly 5 is mounted within the cavity 12 and the L-shaped connecting groove 13. The guide assembly 5 includes a first rod 51, a first pulley 52, a second rod 53, and a second pulley 54. One end of the first rod 51 is fixed to the sidewall of the cavity 12. The first pulley 52 is rotatably mounted to the end of the first rod 51. One end of the second rod 53 is fixed to the inner bottom wall of the L-shaped connecting groove 13. The second pulley 54 is rotatably mounted to the end of the second rod 53. The traction rope 41 passes through the first and second pulleys 52, 54 in sequence. A positioning rod 131 is fixed to the inner wall of the vertical portion of the L-shaped connecting groove 13, and the pull ring 43 is hooked to the positioning rod 131. The traction rope 41 passes through the first and second pulleys 52, 54 in sequence. The cooperation between the first and second pulleys 52, 54 enhances the stability of the traction rope 41 during the lifting and lowering of the cross body 21. The hooking of the positioning rod 131 and the pull ring 43 enhances the stability of the accelerated ventilation assembly 2 during use.

[0041] To further enhance the dust, catkin, and spider web protection of the ventilation blades 23, a baffle 211 is fixed to the upper end of the vertical portion of the cross body 21. The top wall of the vent 11 is provided with an upper groove 111 that cooperates with the baffle 211, and the bottom wall of the vent 11 is provided with a lower groove 112 that cooperates with the baffle 211. The baffle 211 cooperates with the lower groove 112, and the cross body 21, motor 22, and ventilation blades 23 are all stored in the cavity 12. The baffle 211 effectively blocks spider webs, dust, and catkins, keeping the motor 22 and ventilation blades 23 clean and facilitating subsequent normal use. In this embodiment, two positioning rods 131 are provided, with the lower positioning rod 131 located near the bottom of the vertical portion of the L-shaped connecting groove 13.

[0042] In order to clean the ventilation fan blades 23 after a period of use, a cleaning soft brush 121 is fixed to the inner wall of the cavity 12. When the accelerated ventilation assembly 2 is completely inserted into the cavity 12, the bristles of the cleaning soft brush 121 are pressed against the ventilation fan blades 23. After the cross body 21, the motor 22, and the ventilation fan blades 23 are all stored in the cavity 12, the bristles of the cleaning soft brush 121 are pressed against the ventilation fan blades 23. The staff turns on the motor 22 and drives the ventilation fan blades 23 to rotate. The bristles of the cleaning soft brush 121 can clean the surface of the ventilation fan blades 23, which is conducive to maintaining normal use in the future. A main water pipe 6 connected to the external water supply system and a branch water pipe 61 fixed to and connected to the main water pipe 6 are pre-buried in the building wall 1. The cleaning soft brush 121 is provided with a perforation 1211 for the branch water pipe 61 to pass through. The external water supply system sprays water through the main water pipe 6 and the branch water pipe 61, which is conducive to the cleaning soft brush 121 to fully clean the surface of the ventilation fan blades 23.

[0043] To facilitate the handling of sewage generated during cleaning by staff, a mounting groove 15 is provided on the side wall of the building wall 1. A sewage tank 7 is disposed within the mounting groove 15. A fixing member 16 for securing the sewage tank 7 is provided on the building wall 1. The height of the upper surface of the mounting block 3 decreases from the interior of the cavity 12 toward the side near the sewage tank 7. Two water retaining bars 31 are fixed to the top of the mounting block 3. The water retaining bars 31 are located near the edge of the mounting block 3. A water inlet hole 71 is provided on the side wall of the sewage tank 7 near the top of the mounting block 3. A connecting hole 17 is provided in the building wall 1 for connecting the water inlet hole 71 with the cavity 12. Sewage generated during the cleaning process enters the sewage tank 7 through the connecting hole 17 and the water inlet hole 71. In this embodiment, a water outlet hole 72 is provided on the side wall of the sewage tank 7 near its bottom. A water stopper 73 is provided on the sewage tank 7 to engage with the water outlet hole 72. After opening the water stopper 73, staff can discharge the sewage in the sewage tank 7 from the water outlet hole 72.

[0044] A first movable groove 18 is defined on the side wall of the building wall 1 and communicates with the mounting groove 15. A second movable groove 74 is defined on the outer wall of the sewage tank 7 and communicates with the first movable groove 18. The fixing member 16 is a stopper that is rotatably mounted on the building wall 1 and abuts against the side wall of the second movable groove 74. The side wall of the stopper abuts against the side wall of the second movable groove 74 on the sewage tank 7, enhancing the stability of the sewage tank 7 during use. After rotating the stopper, the operator can remove the sewage tank 7 and clean it.

[0045] To facilitate removal and cleaning of the sewage tank 7, the bottom of the tank 7 is tilted, with the side of the tank 7 near the cavity 12 being taller than the other side. To enhance the smoothness of the building wall 1, a rubber shielding sheet 132 is fixed to the inner wall of the vertical portion of the L-shaped connecting groove 13. This shielding sheet 132 shields the traction rope 41, the pull ring 43, and the positioning rod 131, thus enhancing the cleanliness of the building wall 1.

[0046] This embodiment also discloses a method for using a ventilation and energy-saving system for a green building. When the accelerated ventilation component 2 is not needed for a long time, the staff needs to open the rubber shielding sheet 132 and pull the cross body 21 through the pull ring 43 and the traction rope 41, so that the cross body 21 slides downward along the slide groove 14 into the cavity 12 until the baffle 211 is matched with the lower groove 112. At this time, the staff can hook the pull ring 43 with the positioning rod 131 on the lower side.

[0047] The principle of use of a ventilation and energy-saving system for a green building and its use method in this embodiment is as follows: when the accelerated ventilation component 2 has not been used for a long time, the staff only needs to pull the cross body 21 through the pull ring 43 and the traction rope 41, and the cross body 21 slides downward along the slide groove 14. The spring 42 is gradually compressed by the cross body 21 and the mounting block 3, so that the cross body 21, the motor 22, and the ventilation fan blades 23 are all stored in the cavity 12, thereby reducing the probability of the surface of the ventilation fan blades 23 being covered with spider webs, dust, catkins and other debris, which is beneficial to the normal use of the subsequent ventilation system and improves the ventilation air quality to a certain extent.

[0048] The entire ventilation energy-saving system only uses the motor 22 for driving the ventilation fan blades 23 to rotate, and the action of driving the accelerated ventilation component 2 to be stored in the cavity 12 is completed manually, which plays a role in saving energy.

[0049] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A ventilation energy-saving system for a green building, comprising a building wall (1), a ventilation opening (11) extending through the building wall (1), and an accelerated ventilation component (2) disposed in the ventilation opening (11), wherein: The accelerated ventilation assembly (2) comprises a cross body (21) disposed in the ventilation port (11), a motor (22) fixed to the cross body (21), and a ventilation fan blade (23) fixed to the end of the output shaft of the motor (22); A cavity (12) is provided in the building wall (1) and is communicated with the bottom of the vent (11) and is used to accommodate the accelerated ventilation component (2). A driving component (4) is provided in the cavity (12) and is used to accommodate the accelerated ventilation component (2) in the cavity (12); A mounting block (3) is fixed to the inner wall of the cavity (12); the driving assembly (4) comprises a traction rope (41) which is provided on the mounting block (3) and is loosely fitted with the mounting block (3); a spring (42) which is sleeved on the traction rope (41); and a pull ring (43) which is fixed to the lower end of the traction rope (41); the upper end of the traction rope (41) is fixed to the lower end of the vertical portion of the cross body (21); an L-shaped connecting groove (13) which is in communication with the cavity (12) is provided on the side wall of the building wall (1); and the pull ring (43) is located in the L-shaped connecting groove (13); A cleaning soft brush (121) is fixed to the inner wall of the cavity (12); when the accelerating ventilation component (2) completely enters the cavity (12), the bristles of the cleaning soft brush (121) are pressed against the ventilation fan blades (23); A main water pipe (6) connected to an external water supply system and a branch water pipe (61) fixed to and connected to the main water pipe (6) are pre-buried in the building wall (1); a perforation (1211) for the branch water pipe (61) to pass through is provided on the cleaning soft brush (121); The side wall of the building wall (1) is provided with a mounting groove (15), a sewage tank (7) is arranged in the mounting groove (15), and a fixing member (16) for fixing the sewage tank (7) is provided on the building wall (1); The height of the upper surface of the mounting block (3) decreases from the inside of the cavity (12) toward the side close to the sewage tank (7); two water retaining bars (31) are fixed to the top of the mounting block (3); the water retaining bars (31) are located near the edge of the mounting block (3); a water inlet through hole (71) is provided on the side wall of the sewage tank (7) near the top of the mounting block (3); and a connecting through hole (17) for connecting the water inlet through hole (71) and the cavity (12) is provided in the building wall (1).

2. The ventilation and energy-saving system for a green building according to claim 1 is characterized by: The side walls on both sides of the cavity (12) are provided with sliding grooves (14) connected to the cross body (21) in a sliding manner. A guide assembly (5) is installed in the cavity (12) and the L-shaped connecting groove (13). The guide assembly (5) includes a first rod (51) fixed to the side wall of the cavity (12), a first pulley (52) rotatably installed at the end of the first rod (51), a second rod (53) fixed to the inner bottom wall of the L-shaped connecting groove (13), and a second pulley (54) rotatably installed at the end of the second rod (53). The traction rope (41) passes around the first pulley (52) and the second pulley (54) in sequence, and a positioning rod (131) is fixed on the inner wall of the vertical part of the L-shaped connecting groove (13). The pull ring (43) is hooked with the positioning rod (131).

3. The ventilation and energy-saving system for a green building according to claim 2 is characterized by: A baffle (211) is fixed to the upper end of the vertical portion of the cross body (21); an upper groove (111) is provided on the inner top wall of the vent (11) to cooperate with the baffle (211); a lower groove (112) is provided on the inner bottom wall of the vent (11) to cooperate with the baffle (211); two positioning rods (131) are provided, and the lower positioning rod (131) is located near the bottom of the vertical portion of the L-shaped connecting groove (13).

4. The ventilation and energy-saving system for a green building according to claim 1 is characterized by: A water outlet hole (72) is provided on the side wall of the sewage tank (7) near the bottom thereof, and a water stopper (73) is provided on the sewage tank (7) to be plugged into and matched with the water outlet hole (72); A first movable groove (18) communicating with the mounting groove (15) is provided on the side wall of the building wall (1); a second movable groove (74) communicating with the first movable groove (18) is provided on the outer wall of the sewage tank (7); and the fixing member (16) is a limit block rotatably mounted on the building wall (1) and abutting against the side wall of the second movable groove (74).

5. The ventilation and energy-saving system for a green building according to claim 3 is characterized by: The bottom of the sewage tank (7) is arranged at an angle, the height of the sewage tank (7) on one side close to the cavity (12) is greater than the height of the other side of the sewage tank (7), and a rubber shielding sheet (132) is fixed to the inner wall of the vertical portion of the L-shaped connecting groove (13).

6. A method for using the ventilation energy-saving system for green buildings according to claim 5, characterized in that the steps As follows: When the accelerated ventilation assembly (2) is not needed for a long time, the staff needs to open the rubber shielding sheet (132) and pull the cross body (21) through the pull ring (43) and the traction rope (41) so that the cross body (21) slides downward along the slide groove (14) into the cavity (12) until the baffle (211) is matched with the lower groove (112). At this time, the staff can hook the pull ring (43) with the positioning rod (131) on the lower side.

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