1. The utility model provides a building factory building roofing natural ventilation system, includes natural ventilator main part (1), natural ventilator main part (1) fixed extension reposition of redundant personnel pipe (2) in bottom, its characterized in that: the system also comprises a monitoring and control module (3), a first following adjustment controlled module (4) and a second following adjustment controlled module (5), wherein the monitoring and control module (3) is used for monitoring the impurity content and the humidity of the air; the first following adjustment controlled module (4) is arranged on the extension shunt conduit (2), is electrically connected with the monitoring and distribution control module (3) and is used for controlling the air introduction mode; the second following adjusting controlled module (5) is installed on the peripheral side face of the natural ventilator main body (1), is electrically connected with the monitoring distribution control module (3) and is used for carrying out automatic rainproof protection on the natural ventilator main body (1).

2. The natural ventilation system for the roofs of building workshops according to claim 1, characterized in that: the second following adjustment controlled module (5) comprises an assembly ring (6), an adjustment extension structure (7) and a waterproof blocking cover (8), wherein four ends of the assembly ring (6) are connected with the waterproof blocking cover (8) through the adjustment extension structure (7).

3. The natural ventilation system for the roofs of building workshops according to claim 2, characterized in that: adjust and extend structure (7) and include first locating base (9), first motor (10), linkage following block (11), second motor (12), torque guide arm (13), promote shift fork (14), stroke bracing piece (15) and promote slide bar (16), wherein:

a first motor (10) is installed on one side of the first positioning base (9), the output end of the first motor (10) is connected with a linkage following block (11), and a second motor (12) is installed on one side, far away from the first motor (10), of the top end of the linkage following block (11);

the output end of the second motor (12) is fixedly connected with a torque guide rod (13); the torque guide rod (13) is rotationally connected with the linkage following block (11), and a pushing shifting fork (14) is sleeved on the outer side of the torque guide rod;

a stroke reserve groove is formed in the pushing shifting fork (14), a pushing sliding rod (16) is clamped at one end of the stroke reserve groove, and the stroke reserve groove is used for avoiding locking when the pushing shifting fork (14) pushes the pushing sliding rod (16) to ascend;

one end of the linkage following block (11) close to one side of the second motor (12) is welded with a stroke supporting rod (15), and the pushing sliding rod (16) is connected with the inner part of the stroke supporting rod (15) in a sliding manner;

the waterproof blocking cover (8) is made of PG cloth.

4. The natural ventilation system for the roofs of building workshops according to claim 1, characterized in that: monitoring is joined in marriage accuse module (3) and is installed on extending reposition of redundant personnel pipe (2), and it includes air impurity monitoring control structure (17) and air humidity monitoring control structure (18), air humidity monitoring control structure (18) are installed to one side of air impurity monitoring control structure (17).

5. The natural ventilation system for the roofs of building workshops according to claim 4, is characterized in that: air humidity monitoring control structure (18) are including adorning outward position shell (26), built-in spacing shell (27), sponge post (28), ventilation hole (29) and touching formula control button (30), touch formula control button (30) are all installed to the top and the bottom of adorning outward position shell (26), adorn outward the inboard of position shell (26) and install built-in spacing shell (27), the inside joint of adorning inward the spacing shell (27) has sponge post (28), a ventilation hole (29) have all been seted up to the both sides of adorning outward position shell (26) and the both sides of adorning inward the spacing shell (27), ventilation hole (29) are used for leading-in air.

6. The natural ventilation system for the roofs of building workshops according to claim 4, is characterized in that: the air impurity monitoring and controlling structure (17) comprises a built-in carrying box (19), a guide fan (20), a lamp (21), a second positioning base (22), a third motor (23), a filter paper plate (24) and a treatment reaction module (25), wherein the lamp (21) is installed at the top end of the built-in carrying box (19), the guide fan (20) is fixedly installed on two sides of the built-in carrying box, the treatment reaction module (25) is installed at the bottom end of the built-in carrying box, and the second positioning base (22) is installed on the inner side of the built-in carrying box; and a third motor (23) is installed on one side of the second positioning base (22), and a filter paper plate (24) is installed at the output end of the third motor (23) through a driving shaft.

7. The natural ventilation system for the roofs of building workshops according to claim 6, characterized in that: the treatment reaction module (25) comprises a silicon photocell, a controller and a single chip microcomputer, the output end of the silicon photocell is connected with the single chip microcomputer, the output end of the single chip microcomputer is connected with the controller, and the controller is respectively electrically connected with the irradiation lamp (21), the third motor (23), the first following adjustment controlled module (4) and the second following adjustment controlled module (5) and used for controlling the irradiation lamp (21), the third motor (23), the first following adjustment controlled module (4) and the second following adjustment controlled module (5) to move.

8. The natural ventilation system for the roofs of building workshops according to any one of claims 1-7, characterized in that: the first following adjustment controlled module (4) comprises a controlled driving structure (31), a filter screen plate (32) and a sealing plate (33), wherein the filter screen plate (32) is installed at one end of the controlled driving structure (31), the sealing plate (33) is installed at the other end of the controlled driving structure, and the filter screen plate (32) is located above the sealing plate (33); the filter screen plate (32) and the sealing plate (33) are both connected with the extension shunt conduit (2) in a sliding way.

9. The natural ventilation system for the roofs of building workshops according to claim 8, characterized in that: controlled drive structure (31) is including guide carrying block (34), power take off box (35), fourth motor (36), toggle gear (37), linkage rack post (38) and arm-tie (39), the top welding of guide carrying block (34) has power take off box (35), screw fixedly connected with fourth motor (36) are passed through to one side of power take off box (35), the output fixedly connected with toggle gear (37) of fourth motor (36), the inboard sliding connection of guide carrying block (34) has linkage rack post (38), the bottom and the meshing of linkage rack post (38) of toggle gear (37) are connected, the one end welding of linkage rack post (38) has arm-tie (39).

10. A natural ventilation method for a building factory building roof is characterized by comprising the following steps: the natural ventilation system as claimed in any one of claims 1 to 9 is used for ventilation, and the specific operation method is as follows: the monitoring and control module (3) respectively detects air humidity and impurities, and the second following and adjusting controlled module (5) and the first following and adjusting controlled module (4) are respectively controlled to act according to the detected humidity and impurity content, so that natural ventilation and rain protection of the roof are realized, and the air leading-in state is automatically determined according to the air quality.

Background

At present, haze weather in China is more and more severe, indoor environment is continuously influenced by outdoor environment, and requirements of people on air quality are higher and higher. Natural ventilation is to control the spread of air pollutants and reduce the harm caused by the air pollutants by means of ventilation dilution or ventilation removal and the like, so that the indoor and outdoor air environment quality can be guaranteed.

However, in the existing natural ventilation device, due to the lack of a corresponding automatic adjustable waterproof design, the device still needs to be built under a rainfall-free state, a large amount of space is wasted, and the functionality is also affected.

Through search, the Chinese patent application numbers are: 201510866831.1, filing date: the invention is named as: a ventilation, purification and humidification device for indoor air of a building. The device in this application includes indoor air inlet, outdoor air inlet, box shell, filter screen, high pressure sterilization device, ultraviolet germicidal device, one-level active carbon filter screen, humidification device, second grade active carbon filter screen, fan, air quality detection device and indoor air outlet. This application through with air purification, disinfect, the integrated setting of humidification together, improved air purification efficiency, simultaneously, the device of this application can be with indoor and outdoor gas mixture, has realized indoor and outdoor air's interchange to indoor building's air ventilation effect has been improved. However, the device of this application is relatively complicated in structure, and it is difficult to realize automatic adjustment function when using, needs manual operation, and is costly.

Disclosure of Invention

1. Problems to be solved

The invention provides a natural ventilation system and a natural ventilation method for a building factory roof, aiming at the problems that the existing device for natural ventilation is lack of a corresponding automatic adjustable waterproof design and continuous monitoring of impurities in air. The technical scheme of the invention can effectively solve the problems, thereby facilitating the detection of the content and the humidity of impurities in the air during ventilation, further realizing automatic regulation and control, and having simple and convenient control and lower cost.

2. Technical scheme

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the natural ventilation system for the building factory building roof comprises a natural ventilator main body, an extension shunt guide pipe fixed at the bottom of the natural ventilator main body, a monitoring and control module, a first following adjustment controlled module and a second following adjustment controlled module, wherein the monitoring and control module is used for monitoring the impurity content and the humidity of air; the first following adjustment controlled module is arranged on the extension shunt conduit, is electrically connected with the monitoring and distribution control module and is used for controlling the air introduction mode; the second following adjustment controlled module is arranged on the peripheral side surface of the natural ventilator main body, is electrically connected with the monitoring and control module and is used for carrying out automatic rainproof protection on the natural ventilator main body.

Furthermore, the second follow-up adjustment controlled module comprises a fitting ring, an adjustment extending structure and a waterproof blocking cover, wherein four ends of the fitting ring are connected with the waterproof blocking cover through the adjustment extending structure.

Furthermore, adjust extension structure and include first locating base, first motor, linkage following block, second motor, torque guide pole, promotion shift fork, stroke bracing piece and promotion slide bar, wherein:

a first motor is installed on one side of the first positioning base, the output end of the first motor is connected with the linkage following block, and a second motor is installed on one side, far away from the first motor, of the top end of the linkage following block;

the output end of the second motor is fixedly connected with a torque guide rod; the torque guide rod is rotationally connected with the linkage following block, and a pushing shifting fork is sleeved on the outer side of the torque guide rod;

a stroke reserve groove is formed in the pushing shifting fork, a pushing sliding rod is clamped at one end of the stroke reserve groove, and the stroke reserve groove is used for avoiding locking when the pushing shifting fork pushes the pushing sliding rod to ascend;

one end of the linkage following block, close to one side of the second motor, is welded with a stroke supporting rod, and the pushing sliding rod is connected with the inside of the stroke supporting rod in a sliding manner;

the waterproof blocking cover is made of PG cloth.

Furthermore, the monitoring distribution control module is installed on the extension shunt pipe and comprises an air impurity monitoring control structure and an air humidity monitoring control structure, and the air humidity monitoring control structure is installed on one side of the air impurity monitoring control structure.

Still further, air humidity monitoring control structure is including adorning the position shell outward, built-in spacing shell, sponge post, ventilation hole and touching formula control button, touch formula control button is all installed to the top and the bottom of adorning the position shell outward, adorn the inboard of position shell outward and install built-in spacing shell, the inside joint of built-in spacing shell has the sponge post, a ventilation hole has all been seted up to the both sides of adorning the position shell outward and the both sides of built-in spacing shell, ventilation hole is used for leading-in air.

Furthermore, the air impurity monitoring and controlling structure comprises an internally-installed carrying box, a guide fan, a lamp, a second positioning base, a third motor, a paper filtering plate and a processing reaction module, wherein the lamp is installed at the top end of the internally-installed carrying box, the guide fan is fixedly installed on two sides of the internally-installed carrying box, the processing reaction module is installed at the bottom end of the internally-installed carrying box, and the second positioning base is installed on the inner side of the internally-installed carrying box; and a third motor is installed on one side of the second positioning base, and a filter paper plate is installed at the output end of the third motor through a driving shaft.

Furthermore, the processing reaction module comprises a silicon photocell, a controller and a single chip microcomputer, the output end of the silicon photocell is connected with the single chip microcomputer, the output end of the single chip microcomputer is connected with the controller, and the controller is respectively electrically connected with the irradiation lamp, the third motor, the first following adjusting controlled module and the second following adjusting controlled module and used for controlling the irradiation lamp, the third motor, the first following adjusting controlled module and the second following adjusting controlled module to move.

Furthermore, the first following adjustment controlled module comprises a controlled driving structure, a filter screen plate and a sealing plate, wherein the filter screen plate is arranged at one end of the controlled driving structure, the sealing plate is arranged at the other end of the controlled driving structure, and the filter screen plate is positioned above the sealing plate; the filter screen plate and the sealing plate are both connected with the extension shunt conduit in a sliding way.

Further, the controlled structure that drives is including guide carrying block, power take off box, fourth motor, stirring gear, linkage rack post and arm-tie, the top welding of guide carrying block has the power take off box, screw fixedly connected with fourth motor is passed through to one side of power take off box, the output fixedly connected with stirring gear of fourth motor, the inboard sliding connection that the guide carried block has linkage rack post, stirring gear's bottom and linkage rack post meshing are connected, the one end welding of linkage rack post has the arm-tie.

The invention relates to a natural ventilation method for a building factory roof, which adopts a natural ventilation system as claimed to ventilate, and comprises the following specific operation methods: the monitoring and control module respectively detects air humidity and impurity, and according to the detected humidity and impurity content, the second following regulation controlled module and the first following regulation controlled module are respectively controlled to act, so that natural ventilation and rain-proof protection of the roof are realized, and the air leading-in state is automatically determined according to the air quality.

3. Advantageous effects

Compared with the prior art, the invention has the beneficial effects that:

(1) the natural ventilation system for the building factory roof comprises a natural ventilator main body, an extension flow distribution guide pipe, a monitoring and control module, a first following adjustment controlled module and a second following adjustment controlled module. On the other hand, through the cooperation design of monitoring distribution control module and the first controlled module of following regulation for the device can also monitor the impurity content in the air when being convenient for natural draft, thereby selects the leading-in state of confirming the air according to concrete air quality condition, accomplishes the control to air introduction automatically.

(2) According to the natural ventilation system for the building factory roof, the second following adjustment controlled modules comprise a plurality of modules which are arranged on the peripheral side surface of the natural ventilator main body at intervals, the installation positions of the modules are optimally designed, and when the system is in a rainy state, the monitoring and control module controls the second following adjustment controlled modules to operate after detecting air humidity, so that automatic waterproof protection of the natural ventilator main body is realized; and in a non-rainy state, the second following adjusting controlled module is automatically contracted and then is positioned at the top end of the natural ventilator main body to form shielding protection, so that the limitation of peripheral ventilation performance is avoided.

(3) According to the natural ventilation system for the building factory building roof, the specific structure and the installation position of the first following regulation controlled module are optimized, so that the air introduction state can be selected and determined in real time according to the specific air quality condition, if the air is directly introduced without shielding, filtered and introduced or directly closed, and the three states of low impurity content, medium impurity content and overhigh impurity content are further corresponded, so that the indoor automation and convenience of air introduction are realized, the manpower input is greatly reduced, and the manpower is liberated.

(4) According to the natural ventilation system for the building factory roof, the air humidity monitoring and controlling structure of the monitoring and controlling module comprises the external positioning shell, the internal limiting shell, the sponge column, the ventilation through hole and the touch control button, the structure is optimized, so that automatic detection of air humidity can be effectively achieved, the second following adjusting controlled module is triggered to act, automatic waterproof protection of a natural ventilator main body is achieved, manual operation is not needed, the structure is simple, and the design is ingenious.

(5) According to the natural ventilation method for the building factory building roof, the natural ventilation system designed by the invention is adopted for ventilation, so that the natural ventilation of the roof can be effectively realized, and the monitoring and control module can be used for detecting the air humidity during ventilation to judge whether the natural ventilation system rains or not, so that the rainproof protection of the natural ventilation device main body is realized. In addition, the monitoring and distribution control module can also detect the impurity content of the introduced air, automatically selects different introduction modes respectively according to the air quality condition, is reasonable and intelligent in design, and effectively meets the high requirement on the roof ventilation effect.

Drawings

FIG. 1 is a schematic view of the construction of the ventilation assembly of the present invention;

FIG. 2 is a side view of the present invention in its entirety;

FIG. 3 is a schematic view of a second follow-up regulation controlled module according to the present invention;

FIG. 4 is a partial schematic view of the adjusting extension structure of the present invention;

FIG. 5 is a schematic view of a partial structure of a monitoring and control module according to the present invention;

FIG. 6 is a partial schematic structural view of an air impurity monitoring and controlling structure according to the present invention;

FIG. 7 is a schematic view of a partial structure of an air humidity monitoring and controlling structure according to the present invention;

FIG. 8 is a schematic view of a portion of a first follow-up regulation controlled module according to the present invention;

fig. 9 is a partial structural schematic view of the controlled driving structure of the present invention.

In the figure:

1. a natural ventilator body; 2. an extension shunt conduit; 3. a monitoring and control module; 4. a first follow-up regulation controlled module; 5. a second follow-up regulation controlled module; 6. assembling a ring; 7. adjusting the extension structure; 8. a waterproof barrier cover; 9. a first positioning base; 10. a first motor; 11. a linkage following block; 12. a second motor; 13. a torque guide rod; 14. pushing the shifting fork; 15. a travel support bar; 16. pushing the sliding rod; 17. an air impurity monitoring and controlling structure; 18. an air humidity monitoring control structure; 19. a carrying box is arranged in the box; 20. a guide fan; 21. illuminating a lamp; 22. a second positioning base; 23. a third motor; 24. a filter paper board; 25. a treatment reaction module; 26. a positioning shell is arranged outside; 27. a limit shell is arranged in the shell; 28. a sponge column; 29. a ventilation through hole; 30. a touch control button; 31. a controlled driving structure; 32. a filter screen plate; 33. a sealing plate; 34. a guide mounting block; 35. a power take-off cartridge; 36. a fourth motor; 37. shifting a gear; 38. a linkage rack post; 39. and (5) pulling the plate.

Detailed Description

The invention is further described with reference to specific examples.

Example 1

As shown in fig. 1 and fig. 2, the natural ventilation system for building factory building roof of this embodiment includes a natural ventilator main body 1 and an extension shunt conduit 2, the bottom end of the natural ventilator main body 1 is fixed with the extension shunt conduit 2, the extension shunt conduit 2 is used for carrying out specified ventilation to the inside of a building, the natural ventilation system further includes a monitoring and control module 3, a first following adjustment controlled module 4 and a second following adjustment controlled module 5, one end of the extension shunt conduit 2 is fixedly connected with the monitoring and control module 3, the monitoring and control module 3 is used for monitoring the impurity content and humidity of air, the monitoring and control module 3 is electrically connected with the first following adjustment controlled module 4 and the second following adjustment controlled module 5, so as to form control over the first following adjustment controlled module 4 and the second following adjustment controlled module 5. A first following adjustment controlled module 4 is fixedly connected to one side of the extension shunt conduit 2, and a second following adjustment controlled module 5 is fixed to the peripheral side surface of the natural ventilator main body 1.

Specifically, as shown in fig. 5, the monitoring and control module 3 includes an air impurity monitoring and control structure 17 and an air humidity monitoring and control structure 18, and one side of the air impurity monitoring and control structure 17 is fixedly connected with the air humidity monitoring and control structure 18. Referring to fig. 7, air humidity monitoring control structure 18 is including adorning location shell 26 outward, built-in spacing shell 27, sponge post 28, ventilation hole 29 and touch control button 30, adorn the equal fixedly connected with touch control button 30 in top and the bottom of location shell 26 outward, adorn the inboard fixedly connected with of location shell 26 and adorn spacing shell 27 inward, the inside joint of the spacing shell 27 of adorning has sponge post 28, a ventilation hole 29 has all been seted up to the both sides of adorning location shell 26 and the both sides of adorning spacing shell 27 outward, ventilation hole 29 is used for leading-in air. The invention leads and drives the external air to the sponge column 28 by optimizing the specific structure of the air humidity monitoring control structure 18 and utilizing the ventilation through holes 29 arranged at the outer positioning shell 26 and the inner limiting shell 27, so that the air flows through the sponge column 28, the sponge column 28 is made of sponge, the moisture can be absorbed and retained in the air flow passing process, and the sponge has the property of self extension under the condition of high humidity, the guiding and limiting of the sponge column 28 are completed by utilizing the inner limiting shell 27, the sponge column 28 absorbs the humidity to extend when the humidity in the air is too high, the touch extrusion of the touch control button 30 is completed, the touch control button 30 generates an electric signal, the second following adjusting controlled module 5 is guided out and controlled to be used, and the humidity in the air is a precursor of rainfall, so when the humidity in the air is reduced, the moisture in the sponge column 28 is gradually taken away, the touch control button 30 loses contact and loses electric signal derivation, and controls the second following adjustment controlled module 5 to reset and fold, so that automatic rain-proof protection of the natural ventilator main body is realized.

The second following adjustment controlled module 5 comprises a fitting ring 6, an adjustment extension structure 7 and a waterproof blocking cover 8, wherein the four ends of the fitting ring 6 are fixedly connected with the adjustment extension structure 7, the top end of the adjustment extension structure 7 is fixedly connected with the waterproof blocking cover 8, the waterproof blocking cover 8 is made of PG cloth, the PG cloth is called impact cloth, and the PG cloth has the following characteristics: good extensibility, good light resistance and good waterproof performance. Wherein, the adjusting and extending structure 7 comprises a first positioning base 9, a first motor 10, a linkage following block 11, a second motor 12, a torque guide rod 13, a pushing shifting fork 14, a stroke support rod 15 and a pushing slide rod 16, one side of the first positioning base 9 is fixedly connected with the first motor 10 through a screw, the output end of the first motor 10 is fixedly connected with the linkage following block 11, one side of the top end of the linkage following block 11, which is far away from the first motor 10, is fixedly connected with the second motor 12 through a screw, the output end of the second motor 12 is fixedly connected with the torque guide rod 13, the torque guide rod 13 is rotatably connected with the linkage following block 11, the pushing shifting fork 14 is sleeved outside the torque guide rod 13, a stroke reserving groove is arranged inside the pushing shifting fork 14, the stroke reserving groove is used for avoiding locking when the pushing shifting fork 14 pushes the pushing slide rod 16 to rise, one end of the pushing shifting fork, one end of the linkage following block 11 close to one side of the second motor 12 is welded with a stroke supporting rod 15, and a pushing sliding rod 16 is connected with the inside of the stroke supporting rod 15 in a sliding manner.

Under the control that the second following adjustment controlled module 5 receives an electric signal, the first motor 10 drives the linkage following block 11 to complete outward angle expansion, so as to drive the waterproof blocking cover 8 to start adjusting a certain inclination angle, so that the waterproof blocking cover 8 generates an inclination angle for coverage protection, the second motor 12 is used for completing torque output to the torque guide rod 13, the torque guide rod 13 and the pushing fork 14 are matched to drive the pushing fork 14 to deduce and push the sliding rod 16 to slide inside the stroke support rod 15 to complete extension, so that the waterproof blocking cover 8 is deduced and expanded, the protective coverage surface of the natural ventilator main body 1 is enlarged, the first motor 10 and the second motor 12 are both driven to reset after the electric signal is lost, so that the waterproof blocking cover 8 is only positioned at the top end of the natural ventilator main body 1, and sunshade protection is completed.

As shown in fig. 6, the air impurity monitoring and controlling structure 17 includes an internal carrying box 19, a guide fan 20, a lamp 21, a second positioning base 22, a third motor 23, a filter paper plate 24 and a treatment reaction module 25, the lamp 21 is fixedly connected to the top end of the internal carrying box 19, the guide fans 20 are fixedly connected to both sides of the internal carrying box 19 through screws, the treatment reaction module 25 is fixedly connected to the bottom end of the internal carrying box 19, the second positioning base 22 is fixedly connected to the inner side of the internal carrying box 19, the third motor 23 is fixedly connected to one side of the second positioning base 22, a driving shaft is fixedly connected to the output end of the third motor 23, and the filter paper plate 24 is fixed to the outer side of the driving shaft.

The processing reaction module 25 comprises a silicon photocell, a controller and a single chip microcomputer, the output end of the silicon photocell is connected with the single chip microcomputer, the output end of the single chip microcomputer is connected with the controller, and the controller is electrically connected with the irradiation lamp 21, the controller and the third motor 23, the controller and the first following adjusting controlled module 4, and the controller and the second following adjusting controlled module 5.

When air is guided into the built-in carrying box 19 by the guiding fan 20, the air flows through the filter paper board 24, impurity particles in the air are filtered by the filter paper board 24, the clockwise torque output is completed by regularly controlling the third motor 23 through the cooperation of a program in the singlechip and the controller, the filter paper board 24 is driven to complete turnover, the irradiation lamp 21 is synchronously started through the cooperation of the program in the singlechip and the controller, the irradiation lamp 21 irradiates the filter paper board 24, a light beam penetrates through the filter paper board 24 and irradiates the silicon photocell at the processing reaction module 25, the change of the illumination intensity received by the silicon photocell causes the change of the output current intensity of the silicon photocell, the amount of the impurity particles blocked by the filter paper board 24 and the output current of the silicon photocell are in a linear relation within a certain range, the dust concentration is converted through a calculation program set in the singlechip and displayed, and the data acquisition is completed, thereby divide into impurity content low, impurity content medium and impurity content three kinds of states too high according to the monitoring data, and then control first follow and adjust controlled module 4 and carry out the regulation that does not have the direct leading-in of shielding, filter leading-in or directly close three kinds of states, and then realize air introduction indoor automation, convenient, be favorable to the human input that significantly reduces, liberate the manpower.

Specifically, the first following adjustment controlled module 4 includes a controlled driving structure 31, a filter screen plate 32 and a sealing plate 33, the filter screen plate 32 is fixedly connected to one end of the controlled driving structure 31 located at the upper end, the sealing plate 33 is fixedly connected to one end of the controlled driving structure 31 located at the lower end, and the filter screen plate 32 and the sealing plate 33 are both connected to the extension shunt conduit 2 in a sliding manner.

When the impurity content in the air is low, the first follow-up regulation controlled module 4 does not operate;

when the impurity content in the air is moderate, the controlled driving structure 31 positioned at the upper end is started to drive the filter screen plate 32 to enter the extension shunt pipe 2, the filter screen plate 32 is utilized to filter the doped impurities in the introduced natural wind, and the impurities are prevented from flowing into a workshop along with the wind power;

when the impurity content in the air is too high, the controlled driving structure 31 positioned at the lower end is started to drive the sealing plate 33 to complete the complete sealing of the interior of the extension shunt pipe 2, so that the high-impurity air is prevented from entering a workshop.

Wherein, controlled drive structure 31 is including guide carrying block 34, power take off box 35, fourth motor 36, toggle gear 37, linkage rack post 38 and arm-tie 39, the top welding of guide carrying block 34 has power take off box 35, screw fixedly connected with fourth motor 36 is passed through to one side of power take off box 35, the output end fixedly connected with toggle gear 37 of fourth motor 36, the inboard sliding connection of guide carrying block 34 has linkage rack post 38, toggle gear 37's bottom and linkage rack post 38 meshing are connected, the one end welding of linkage rack post 38 has arm-tie 39.

The fourth motor 36 drives the toggle gear 37 to rotate, the toggle gear 37 is used for toggling the linkage rack column 38 to complete power derivation, the guide carrying block 34 is used for guiding and limiting the linkage rack column 38, the linkage rack column 38 slides and displaces to drive the pull plate 39 to move, and the pull plate 39 is connected with the sealing plate 33 or the filter screen plate 32 to complete automatic control of the air guiding mode.

According to the ventilation method, the ventilation system is directly arranged above the roof, and the monitoring and control module 3 is arranged in the ventilation system, so that on one hand, natural ventilation of the roof can be effectively realized, and during ventilation, the monitoring and control module 3 is used for detecting air humidity to judge whether the natural ventilation system rains or not, and further, the rainproof protection of a natural ventilation device main body is realized. On the other hand, the monitoring and control module 3 can also detect the impurity content of the introduced air, automatically selects different introduction modes respectively according to the air quality condition, is reasonable and intelligent in design, and effectively meets the high requirement on the roof ventilation effect.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.