Energy-saving building top ventilation device

Abstract

The invention relates to the technical field of building ventilation, in particular to an energy-saving building top ventilation device which comprises a lower support, a supporting sleeve is arranged on the top of the lower support, a bottom support is rotationally connected to the supporting sleeve, ventilation fan blades are evenly arranged on the bottom support, and the tops of the ventilation fan blades are fixed to a top support. A shielding frame is rotationally connected to the top support, an anti-blocking mechanism is slidably connected to the shielding frame, and the anti-blocking mechanism is connected with an active ventilation mechanism. Passive ventilation is carried out through a spherical ventilation structure formed by the ventilation fan blades distributed circumferentially, and active ventilation can be carried out when the wind speed is too low in cooperation with the active ventilation mechanism; gaps among the ventilation fan blades are prevented from being blocked by utilizing an anti-blocking mechanism; the low-temperature sealing mechanism is used for automatically cutting off the ventilation pipeline when the temperature of the building is too low, external cold air is prevented from invading the building, and heat loss in the building is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of building ventilation, and particularly relates to an energy-saving building roof ventilation device. BACKGROUND

[0002] The energy-saving building roof ventilation structure is a building technology for adjusting indoor temperature and reducing energy consumption by optimizing roof design and utilizing natural ventilation or mechanical auxiliary ventilation, and the core purpose is to reduce the dependence on active refrigeration equipment such as air conditioners, improve building energy efficiency, and improve indoor comfort; the existing energy-saving building roof ventilation structure basically depends on the unpowered wind ball installed on the top to realize passive ventilation of the building, and an additional power structure needs to be added as a driving unit for the unpowered wind ball in the case of insufficient natural wind power; the existing building roof ventilation structure basically meets the daily use requirements, but the gap between the unpowered wind balls is easy to accumulate the fluffy substances floating in the air for a long time, thereby causing the gap to be blocked and affecting the ventilation effect; at the same time, the ventilation device will accelerate the loss of hot air in the room when the temperature is low, and the additional blocking structure needs to arrange personnel to remove or open and adjust the blocking structure when the season changes; therefore, it is necessary to design an energy-saving building roof ventilation device. SUMMARY

[0003] The purpose of the present application is to provide an energy-saving building roof ventilation device with simple structure and reasonable design to solve the above problems.

[0004] The present application achieves the above-mentioned purposes through the following technical solutions: An energy-saving building roof ventilation device, comprising a lower support, a support sleeve is arranged on the top of the lower support, a bottom support is rotatably connected to the support sleeve, ventilation fan blades are uniformly arranged on the bottom support, the top of the ventilation fan blades is fixed to a top support, a shielding frame is rotatably connected to the top support, and a anti-blocking mechanism is slidably connected to the shielding frame, the anti-blocking mechanism is connected to a active ventilation mechanism, a ventilation sleeve is arranged inside the lower support, and a low-temperature sealing mechanism is arranged at the bottom of the ventilation sleeve.

[0005] As a further optimization scheme of the present application, the anti-blocking mechanism comprises a support table slidably connected to the shielding frame, limit sleeves are uniformly arranged on the side walls of the support table, telescopic sliding tables are slidably connected in the limit sleeves, side sliding blocks are symmetrically and fixedly arranged on both sides of the telescopic sliding tables, the side sliding blocks are slidably connected in arc-shaped supports, the arc-shaped supports are rotatably connected to the bottom of the top support, the telescopic sliding tables are slidably connected between the arc-shaped supports, and a limit shell is fixedly connected to one end of the telescopic sliding tables.

[0006] As a further optimization scheme of the present application, the limiting shell is slidingly connected to the limiting rod, one end of the limiting rod is provided with a brush head, the other end of the limiting rod is provided with a retractable support at the bottom, the retractable support is slidingly connected to the slide uniformly opened in the rotating table, the rotating table is slidingly connected to the supporting table, the oblique slide is opened in the side wall of the supporting table, the transmission guide rod is slidingly connected in the oblique slide, the transmission guide rod is fixedly arranged on the rotating table, the bottom of the rotating table is slidingly connected to the docking table, and the docking table and the rotating table are uniformly provided with return springs.

[0007] As a further optimization scheme of the present application, the active ventilation mechanism includes a transmission frame fixedly connected to the bottom of the docking table, the transmission frame is slidingly connected to the mounting table, the side wall of the mounting table is uniformly provided with a supporting rod, one end of the supporting rod is slidingly connected to the sliding groove in the inner wall of the transmission ring, the transmission ring is fixed in the bottom bracket, the bottom of the transmission ring is uniformly provided with a positioning groove, the positioning groove is sleeved with a positioning frame, and the positioning frame is fixedly connected to the output end of the positioning cylinder, and the positioning cylinder is fixed to the mounting table.

[0008] As a further optimization scheme of the present application, the transmission frame is slidingly connected with a square block, the two sides of the square block are fixed in the driven wheel through connecting rods, the driven wheel is connected to the driving wheel through a belt, the driving wheel is fixedly connected to the output end of the strong ventilation motor, the strong ventilation motor is fixed to the inner wall of the supporting sleeve, the bottom end of the transmission frame is rotatably connected to an adjusting arm, and the adjusting arm is slidingly connected to the through slot in the side wall of the supporting sleeve.

[0009] As a further optimization scheme of the present application, one end of the adjusting arm is sleeved on the lifting table, and the lifting table is slidingly connected to the top of the lower support, the lifting cylinder is fixedly installed at the inner top end of the lower support, and the output end of the lifting cylinder is fixed to the bottom of the lifting table.

[0010] As a further optimization scheme of the present application, the low-temperature sealing mechanism includes a connecting sleeve fixed to the bottom end of the supporting sleeve, the bottom end of the connecting sleeve is fixedly provided with a connecting plate, and the connecting plate is uniformly provided with a fixing sleeve and a guide frame.

[0011] As a further optimization scheme of the present application, the fixing sleeve is rotatably connected with a sealing plate, the top of the sealing plate is provided with a connecting column, and the connecting column is slidingly connected in the guide frame.

[0012] As a further optimization scheme of the present invention, the top of the connecting plate is rotatably connected to a rotating plate, and adjustment slides are evenly provided on the rotating plate. The adjustment slides are slidably connected to the connecting column, and magnetic plates are evenly provided on the top of the rotating plate. A support spring is provided on the magnetic plate, and one end of the support spring is fixed on the mounting plate, and the mounting plate is fixed on the side wall of the connecting sleeve. An iron core is sleeved in the mounting plate, and a coil is wound around the iron core.

[0013] The beneficial effects of the present invention are: 1. The present invention connects circumferentially distributed ventilation blades through a top bracket and a bottom bracket to form a spherical ventilation structure. When air flows from the outside, the ventilation blades will be forced to drive the entire spherical ventilation structure to rotate, and the air inside will be extracted to achieve the actual effect of ventilating the building; when the external wind speed is too low to drive the spherical ventilation structure to rotate, the active ventilation mechanism is used as a power to drive the spherical ventilation structure to rotate, making the ventilation effect more stable.

[0014] 2. When the ventilation fan blades are cleaned, the alignment cylinder pulls the alignment frame upward. After the alignment frame is stuck in the alignment groove, the bottom bracket and the entire spherical ventilation structure can be driven to rotate by the transmission ring during the rotation of the transmission frame. Then the driving wheel on the strong ventilation motor drives the driven wheel to rotate through the belt, so that the square block drives the transmission frame to rotate. When rotating, the transmission guide rod is forced to slide up along the inclined slide first. When it slides to the top of the inclined slide, it drives the rotating table to rotate synchronously through the transmission guide rod. At the same time, the rotating table moves up along the inclined slide and rotates relative to the support table during the rotation process. The slides evenly arranged on the turntable pull the limit rod to slide, so that the brush head and the limit rod slide toward the gap between the ventilation fan blades. At the same time, the lifting electric cylinder drives the lifting platform and one end of the adjusting arm to move up and down reciprocatingly. During the movement, the transmission frame, docking platform and support platform can be driven to move up and down synchronously. During the up and down movement of the support platform, the telescopic slide is pulled to slide along the curved surface of the ventilation fan blades through the cooperation of the side slider and the arc-shaped bracket. The gaps between the ventilation fan blades are cleaned by the reciprocating brush head to prevent flocs in the air from adhering to the gaps between the ventilation fan blades, thereby ensuring the ventilation effect of the device.

[0015] 3. Under normal working conditions of the present invention, the supporting spring separates the magnetic plate and the iron core. At this time, the circumferentially distributed rotating plates rotate outward and expand respectively, and the bottom of the connecting sleeve opens. The reserved air duct inside the building is connected to the spherical ventilation structure on the top. When the temperature sensor installed in the air duct detects that the temperature inside the building is too low, the coil is energized to make the iron core magnetic. At this time, the magnetic plate drives the rotating plate to rotate closer to the iron core. During the rotation, the connecting column is pulled along the guide frame by adjusting the slide, so that the closing plate rotates toward the axis of the connecting sleeve. After the closing plates contact each other, the entire connecting sleeve is closed, and the connection between the reserved air duct inside the building and the spherical ventilation structure on the top is physically cut off. At the same time, the heat generated by the coil being energized and heated is collected at the internal top of the lower support, preventing external cold air from invading the building and reducing heat loss inside the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the installation position of the lifting electric cylinder in the present invention; Figure 3 It is a structural schematic diagram of the low-temperature sealing mechanism of the present invention; Figure 4 It is a schematic diagram of the explosion structure of the low-temperature sealing mechanism in the present invention; Figure 5 This is a schematic diagram of the state of the low-temperature sealing mechanism of the present invention when it is closed; Figure 6 This is a schematic diagram of the installation position of the active ventilation mechanism in the present invention; Figure 7 Schematic diagram of the installation position of the anti-blocking mechanism in the present invention; Figure 8 It is a schematic diagram of the explosion structure of the anti-blocking mechanism in the present invention; Figure 9 yes Figure 8 A partial enlarged view of area A in the middle; Figure 10 yes Figure 8 A partial enlarged view of the middle B area; Figure 11 This is a schematic diagram of the opening position of the oblique slideway in the present invention; Figure 12 It is a partial connection diagram of the anti-blocking mechanism in the present invention; Figure 13 It is a partial connection diagram of the active ventilation mechanism in the present invention.

[0017] In the figure: 1. lower support; 2. support sleeve; 3. bottom bracket; 4. ventilation fan blade; 5. anti-blocking mechanism; 6. active ventilation mechanism; 9. low-temperature sealing mechanism; 10. ventilation sleeve; 11. top bracket; 12. shielding frame; 501. support platform; 502. limiting sleeve; 503. telescopic slide; 504. side slide; 505. arc bracket; 506. limiting shell; 507. limiting rod; 508. brush head; 509. retracting pillar; 510. rotating table; 511. oblique slide; 512. transmission guide rod; 513. docking station; 514. reset spring; 601. transmission frame; 602. Mounting table; 603, support rod; 604, transmission ring; 605, alignment groove; 606, alignment frame; 607, alignment cylinder; 608, square block; 609, driven wheel; 610, driving wheel; 611, forced ventilation motor; 612, adjusting arm; 613, lifting platform; 614, lifting electric cylinder; 901, connecting sleeve; 902, connecting plate; 903, fixing sleeve; 904, guide frame; 905, connecting column; 906, rotating plate; 907, adjusting slide; 908, magnetic plate; 909, supporting spring; 910, mounting plate; 911, iron core; 912, coil; 913, closing plate. DETAILED DESCRIPTION

[0018] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] Example: See Figures 1-13, an energy-saving building top ventilation device includes a lower support 1 fixedly installed on the top of the reserved air duct of the building, a support sleeve 2 is symmetrically provided on the top of the lower support 1, a bottom bracket 3 is rotatably connected to the support sleeve 2, and ventilation fan blades 4 are evenly installed on the bottom bracket 3 by bolts, and the top of the ventilation fan blades 4 is fixed to the top bracket 11. The ventilation fan blades 4 evenly arranged on the top bracket 11 and the bottom bracket 3 form a spherical ventilation structure. When air flows from the outside, the ventilation fan blades 4 will be forced to drive the entire spherical ventilation structure to rotate, and the internal air will be extracted to ventilate the building. The top center of the top bracket 11 is rotatably connected to the sliding rod at the bottom of the shielding frame 12 through a bearing. The top of the shielding frame 12 is a dome structure to prevent impurities from accumulating. The shielding frame 12 is slidably connected with an anti-blocking Mechanism 5, the anti-blocking mechanism 5 is located between the ventilation blades 4, and the anti-blocking mechanism 5 can be used to clean the gaps between the ventilation blades 4 to avoid blockage of the gaps caused by flocs, thereby ensuring the ventilation effect. The anti-blocking mechanism 5 is connected to the active ventilation mechanism 6. When the external wind force is insufficient, the active ventilation mechanism 6 drives the entire spherical ventilation structure to rotate. A ventilation sleeve 10 is provided inside the lower support 1, and a low-temperature sealing mechanism 9 is provided at the bottom of the ventilation sleeve 10. A temperature sensor is installed in the air duct reserved for the building. When the temperature sensor detects that the temperature inside the building is low, the low-temperature sealing mechanism 9 is used to close the ventilation path, and heat is generated in the lower support 1 at the same time. Combined with physical sealing, a double-layer insulation effect is achieved to prevent external cold air from invading the building and reduce heat loss inside the building.

[0020] See also Figure 6-Figure 13The anti-blocking mechanism 5 includes a support platform 501 slidably connected to the bottom slide rod of the shielding frame 12, and a limit sleeve 502 is evenly arranged on the side wall of the support platform 501. A telescopic slide 503 is slidably connected in the limit sleeve 502. The telescopic slide 503 is slidably connected to the arc-shaped bracket 505, and the side sliders 504 symmetrically arranged on both sides of the telescopic slide 503 are slidably connected to the through grooves on both sides of the arc-shaped bracket 505. The top of the arc-shaped bracket 505 is rotatably connected to the bottom of the top bracket 11. The spherical structure formed by the entire arc-shaped bracket 505 coincides with the center of the spherical ventilation structure formed by the ventilation fan blades 4. One end of the telescopic slide 503 is fixedly connected to the limit shell 506, and the limit shell 506 is slidably connected to the limit rod 507. One end of the limit rod 507 is provided with a brush head 508. During the operation of the anti-blocking mechanism 5, the brush head 508 is located in the gap between two adjacent ventilation fan blades 4. The bottom of the other end of the limit rod 507 is provided with a contraction support 509, and the contraction support 509 slides. The rotating platform 510 is connected to the slideway evenly opened on the rotating platform 510, and the rotating platform 510 is slidably connected to the bottom of the support platform 501, and an inclined slideway 511 is opened on the side wall of the support platform 501. A transmission guide rod 512 is slidably connected in the inclined slideway 511, and the transmission guide rod 512 is fixedly set on the rotating platform 510. The bottom of the rotating platform 510 is slidably connected to the docking platform 513, and a return spring 514 is evenly set between the docking platform 513 and the rotating platform 510. The docking platform 513 rotates Connected to the bottom of the support platform 501, when there is no power input to the docking platform 513, the elastic force of the return spring 514 will pull the rotating platform 510 downward. During the downward movement, the transmission guide rod 512 will slide down along the inclined slide 511, thereby causing the support platform 501 and the rotating platform 510 to rotate relative to each other. The limit rod 507 is pulled to slide through the slides evenly opened on the rotating platform 510, causing the brush head 508 and the limit rod 507 to shrink toward the inside of the entire spherical ventilation structure and disengage from the ventilation fan blades 4.

[0021] See also Figures 6-10 and Figure 13The active ventilation mechanism 6 includes a transmission frame 601 fixedly connected to the bottom of the docking platform 513. The cross-section of the transmission frame 601 is a square tube structure with grooves on both sides. The transmission frame 601 is slidably connected to the mounting platform 602. Support rods 603 are evenly arranged on the side walls of the mounting platform 602, and the spherical protrusions at one end of the support rods 603 are slidably connected to the annular grooves on the inner wall of the transmission ring 604. The transmission ring 604 is fixed in the bottom bracket 3, and the bottom of the transmission ring 604 is evenly provided with alignment grooves 605. The number of the alignment grooves 605 is the same as the number of the ventilation fan blades 4. The alignment frame 606 is sleeved in the alignment groove 605, and the alignment frame 606 is fixedly connected to the output end of the alignment cylinder 607. The alignment cylinder 607 is fixed to the support plate on the mounting platform 602. When active ventilation is required, the alignment frame 606 is pulled up by the alignment cylinder 607. After the alignment frame 606 is stuck in the alignment groove 605, the bottom bracket 3 and the entire spherical ventilation structure can be driven to rotate through the transmission ring 604 during the rotation of the transmission frame 601. A square block 608 is slidably connected in the transmission frame 601, and the square block 608 is symmetrically arranged on both sides. The connecting rod passes through the grooves on both sides of the transmission frame 601 and is fixed on the inner wall of the driven wheel 609. The rotation axis of the driven wheel 609 coincides with the rotation axis of the transmission frame 601. The driven wheel 609 is connected to the driving wheel 610 through a belt. The driving wheel 610 is fixedly connected to the output end of the strong ventilation motor 611. The strong ventilation motor 611 is fixed on the inner wall of the support sleeve 2. The bottom end of the transmission frame 601 is rotatably connected to the adjusting arm 612. The adjusting arm 612 is slidably connected to the through groove on the side wall of the support sleeve 2. One end of the adjusting arm 612 is sleeved on the lifting platform 613 , and the lifting platform 613 is slidably connected to the top of the lower support 1, and a lifting electric cylinder 614 is fixedly installed on the internal top of the lower support 1. The output end of the lifting electric cylinder 614 is fixed to the bottom of the lifting platform 613. The adjusting arm 612 can drive the transmission frame 601 to move up and down synchronously during the up and down movement. During the movement, the docking platform 513 and the support platform 501 can be driven to move up and down synchronously. During the up and down movement of the support platform 501, the telescopic slide 503 is pulled to slide along the curved surface of the ventilation fan blade 4 through the cooperation of the side slider 504 and the arc-shaped bracket 505.

[0022] See also Figure 2-Figure 5The low-temperature sealing mechanism 9 includes a connecting sleeve 901 fixed to the bottom end of the supporting sleeve 2, a connecting plate 902 is fixedly provided at the bottom end of the connecting sleeve 901, a fixing sleeve 903 and a guide frame 904 are evenly provided on the connecting plate 902, the fixing sleeve 903 is rotatably connected to the cylinder on the sealing plate 913, a sealing gasket is provided at the edge of the sealing plate 913, a connecting column 905 is provided on the top of the sealing plate 913, the connecting column 905 is slidably connected to the guide frame 904, and the connecting plate 902 The top of the rotating plate 906 is rotatably connected to the rotating plate 906, and the rotating plate 906 is evenly provided with an adjustment slide 907, which is slidably connected to the connecting column 905. The top of the rotating plate 906 is evenly provided with a magnetic plate 908, and a support spring 909 is provided on the magnetic plate 908. One end of the support spring 909 is fixed to the mounting plate 910, and the mounting plate 910 is fixed to the side wall of the connecting sleeve 901. An iron core 911 is sleeved in the mounting plate 910, and a coil is wound around the iron core 911. 912. Under normal working conditions, the support spring 909 separates the magnetic plate 908 and the iron core 911. At this time, the circumferentially distributed rotating plates 906 rotate outward and expand respectively, and the bottom of the connecting sleeve 901 is opened. The reserved air duct inside the building is connected to the spherical ventilation structure on the top. When the temperature sensor installed in the air duct detects that the temperature inside the building is too low, the coil 912 is energized to make the iron core 911 generate magnetism. At this time, the magnetic plate 908 drives the rotating plate 906 to rotate closer to the iron core 911. During the rotation, the connecting column 905 is pulled along the guide frame 904 by adjusting the slide 907, so that the closing plate 913 rotates toward the axis of the connecting sleeve 901. After the closing plates 913 contact each other, the entire connecting sleeve 901 is closed, physically cutting off the connection between the reserved air duct inside the building and the spherical ventilation structure on the top. At the same time, the heat generated by the coil 912 when it is energized is collected at the inner top of the lower support 1, preventing external cold air from invading the building and reducing heat loss inside the building.

[0023] It should be noted that, when using this energy-saving building top ventilation device, the ventilation device is first installed on the top of the air duct reserved in the building to close the entire air duct; the top bracket 11 and the bottom bracket 3 cooperate with the circumferentially distributed ventilation fan blades 4 to form a spherical ventilation structure. When there is air flow from the outside, the ventilation fan blades 4 will be forced to drive the entire spherical ventilation structure to rotate, and the air inside will be extracted to achieve the effect of passive ventilation of the building; when the ventilation fan blades 4 are cleaned, the positioning cylinder 607 pulls the positioning frame 606 up, and after the positioning frame 606 is stuck in the positioning groove 605, the transmission frame 601 rotates During the process, the bottom bracket 3 and the entire spherical ventilation structure can be driven to rotate by the transmission ring 604, and active ventilation can be performed by the strong ventilation motor 611 at this time; the driving wheel 610 on the strong ventilation motor 611 drives the driven wheel 609 to rotate through the belt, so that the square block 608 drives the transmission frame 601 to rotate. When rotating, the transmission guide rod 512 is forced to slide up along the inclined slide 511 first, and when it slides to the top of the inclined slide 511, it drives the rotating table 510 to rotate synchronously through the transmission guide rod 512. At the same time, the rotating table 510 moves up along the inclined slide 511 and rotates relative to the support table 501. The brush head 508 and the limit rod 507 are pulled to slide toward the gap between the ventilation fan blades 4 by the slideway evenly opened on the rotating table 510. At the same time, the lifting cylinder 614 drives the lifting table 613 to drive one end of the adjustment arm 612 to move up and down reciprocatingly. During the movement, the transmission frame 601, the docking table 513 and the support table 501 can be driven to move up and down synchronously. During the up and down movement of the support table 501, the telescopic slide 503 is pulled to slide along the curved surface of the ventilation fan blade 4 by the cooperation of the side slider 504 and the arc bracket 505. 8. The gaps between the ventilation blades 4 are cleaned to prevent flocs in the air from adhering to the gaps between the ventilation blades 4, thereby ensuring the ventilation effect of the device; when there is no power input to the docking platform 513, the elastic force of the return spring 514 will pull the rotating platform 510 downward, and during the downward movement, the transmission guide rod 512 will slide down along the oblique slide 511, thereby causing the support platform 501 and the rotating platform 510 to rotate relative to each other, and the limit rod 507 is pulled to slide through the slides evenly opened on the rotating platform 510, so that the brush head 508 and the limit rod 507 are retracted toward the inside of the entire spherical ventilation structure and separated from the ventilation blades 4;Under normal operating conditions, support springs 909 separate magnetic plate 908 and iron core 911. At this time, the circumferentially distributed rotating plates 906 rotate outward and expand, opening the bottom of connecting sleeve 901. The reserved air duct inside the building is connected to the spherical ventilation structure at the top. When the temperature sensor installed in the air duct detects that the temperature inside the building is too low, coil 912 is energized to generate magnetism in iron core 911. At this time, magnetic plate 908 drives rotating plate 906 to rotate closer to iron core 911. During this rotation, the connecting column 905 is pulled along the guide frame 904 by adjusting the slide 907, causing the closing plate 913 to rotate toward the axis of connecting sleeve 901. When the closing plates 913 come into contact with each other, the entire connecting sleeve 901 is closed, physically severing the connection between the reserved air duct inside the building and the spherical ventilation structure at the top. At the same time, the heat generated by the coil 912 when it is energized is collected at the inner top of lower support 1, preventing external cold air from invading the building and reducing heat loss inside the building.

[0024] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. An energy-saving building top ventilation device, comprising a lower support (1), characterized in that: A support sleeve (2) is provided at the top of the lower support (1), a bottom bracket (3) is rotatably connected to the support sleeve (2), ventilation blades (4) are evenly provided on the bottom bracket (3), the tops of the ventilation blades (4) are fixed to the top bracket (11), a shielding frame (12) is rotatably connected to the top bracket (11), and an anti-blocking mechanism (5) is slidably connected to the shielding frame (12), the anti-blocking mechanism (5) is connected to the active ventilation mechanism (6), a ventilation sleeve (10) is provided inside the lower support (1), and a low-temperature sealing mechanism (9) is provided at the bottom of the ventilation sleeve (10).

2. The energy-saving building top ventilation device according to claim 1, characterized in that: The anti-blocking mechanism (5) includes a support platform (501) slidably connected to the shielding frame (12), a limiting sleeve (502) is evenly arranged on the side wall of the support platform (501), a telescopic slide (503) is slidably connected in the limiting sleeve (502), side sliders (504) are symmetrically fixedly arranged on both sides of the telescopic slide (503), the side sliders (504) are slidably connected to the arc bracket (505), the arc bracket (505) is rotatably connected to the bottom of the top bracket (11), the telescopic slide (503) is slidably connected between the arc brackets (505), and one end of the telescopic slide (503) is fixedly connected to the limiting shell (506).

3. The energy-saving building top ventilation device according to claim 2, characterized in that: The limiting shell (506) is slidably connected to the limiting rod (507), and a brush head (508) is provided at one end of the limiting rod (507), and a contraction support (509) is provided at the bottom of the other end of the limiting rod (507), and the contraction support (509) is slidably connected to a slideway evenly opened on the rotating platform (510), and the rotating platform (510) is slidably connected to the supporting platform (501), and an inclined slideway (511) is provided on the side wall of the supporting platform (501), and a transmission guide rod (512) is slidably connected in the inclined slideway (511), and the transmission guide rod (512) is fixedly provided on the rotating platform (510), and the bottom of the rotating platform (510) is slidably connected to a docking platform (513), and a return spring (514) is evenly provided between the docking platform (513) and the rotating platform (510), and the docking platform (513) is rotatably connected to the bottom end of the supporting platform (501).

4. The energy-saving building top ventilation device according to claim 3, characterized in that: The active ventilation mechanism (6) includes a transmission frame (601) fixedly connected to the bottom of the docking platform (513), a mounting platform (602) being slidably connected to the transmission frame (601), support rods (603) being evenly arranged on the side walls of the mounting platform (602), and one end of the support rod (603) being slidably connected to a slide groove on the inner wall of a transmission ring (604), the transmission ring (604) being fixed in the bottom bracket (3), and a positioning groove (605) being evenly opened at the bottom of the transmission ring (604), a positioning frame (606) being sleeved in the positioning groove (605), and the positioning frame (606) being fixedly connected to the output end of a positioning cylinder (607), and the positioning cylinder (607) being fixed on the mounting platform (602).

5. The energy-saving building top ventilation device according to claim 4, characterized in that: A square block (608) is slidably connected to the transmission frame (601), and both sides of the square block (608) are fixed to a driven wheel (609) through a connecting rod. The driven wheel (609) is connected to a driving wheel (610) through a belt. The driving wheel (610) is fixedly connected to the output end of a strong ventilation motor (611). The strong ventilation motor (611) is fixed on the inner wall of the support sleeve (2). The bottom end of the transmission frame (601) is rotatably connected to an adjustment arm (612), and the adjustment arm (612) is slidably connected to a through groove on the side wall of the support sleeve (2).

6. The energy-saving building top ventilation device according to claim 5, characterized in that: One end of the regulating arm (612) is sleeved on the lifting platform (613), and the lifting platform (613) is slidably connected to the top of the lower support (1). A lifting electric cylinder (614) is fixedly installed on the internal top of the lower support (1), and the output end of the lifting electric cylinder (614) is fixed to the bottom of the lifting platform (613).

7. The energy-saving building top ventilation device according to claim 1, characterized in that: The low-temperature sealing mechanism (9) comprises a connecting sleeve (901) fixed to the bottom end of the supporting sleeve (2), a connecting plate (902) being fixedly provided at the bottom end of the connecting sleeve (901), and a fixing sleeve (903) and a guide frame (904) being evenly provided on the connecting plate (902).

8. The energy-saving building top ventilation device according to claim 7, characterized in that: A closing plate (913) is rotatably connected to the fixing sleeve (903), a connecting column (905) is provided on the top of the closing plate (913), and the connecting column (905) is slidably connected to the guide frame (904).

9. The energy-saving building top ventilation device according to claim 7, characterized in that: The top of the connecting plate (902) is rotatably connected to a rotating plate (906), the rotating plate (906) is evenly provided with adjustment slideways (907), the adjustment slideways (907) are slidably connected to the connecting column (905), the top of the rotating plate (906) is evenly provided with magnetic plates (908), the magnetic plates (908) are provided with support springs (909), one end of the support spring (909) is fixed to a mounting plate (910), the mounting plate (910) is fixed to the side wall of the connecting sleeve (901), an iron core (911) is sleeved in the mounting plate (910), and a coil (912) is wound around the iron core (911).

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