CN111425981B - Building smoke discharging and ventilating structure - Google Patents

Building smoke discharging and ventilating structure Download PDF

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Publication number
CN111425981B
CN111425981B CN202010235369.6A CN202010235369A CN111425981B CN 111425981 B CN111425981 B CN 111425981B CN 202010235369 A CN202010235369 A CN 202010235369A CN 111425981 B CN111425981 B CN 111425981B
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China
Prior art keywords
cover plate
air suction
pipeline
guide
air
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CN202010235369.6A
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CN111425981A (en
Inventor
周建潮
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Shanxi Chuanzhong environmental economic industry development Co.,Ltd.
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Shanxi Chuanzhong Environmental Economic Industry Development Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/04Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F17/00Vertical ducts; Channels, e.g. for drainage
    • E04F17/02Vertical ducts; Channels, e.g. for drainage for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F17/00Vertical ducts; Channels, e.g. for drainage
    • E04F17/04Air-ducts or air channels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02Ducting arrangements
    • F24F13/0236Ducting arrangements with ducts including air distributors, e.g. air collecting boxes with at least three openings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02Ducting arrangements
    • F24F13/0254Ducting arrangements characterised by their mounting means, e.g. supports

Abstract

The embodiment of the invention discloses a smoke exhaust and ventilation structure of a building, which comprises a ventilating duct and an air cabinet, wherein the ventilating duct and the air cabinet are fixedly arranged on a roof by a duct hanger, one end of the ventilating duct is connected with the input end of the air cabinet, the output end of the air cabinet is provided with an L-shaped duct which extends to an outer wall and has an upward opening, and an opening at the top end of the L-shaped duct is provided with an exhaust cap communicated with the L-shaped duct; install on air pipe every one section distance with the air suction pipe of air pipe intercommunication, air suction pipe's bottom is equipped with the first vent that is the rectangle, and air suction pipe's inside is equipped with the layering and covers gradually the layering of first vent covers the mechanism, through covering the mechanism with the layering and establishing into three-section foldable structure, through the lift of controlling every section structure, can cover the first vent in air suction pipe bottom gradually in the layering for the inlet scoop area of air suction pipe bottom is adjustable, is convenient for deal with different user demands.

Description

Building smoke discharging and ventilating structure
Technical Field
The embodiment of the invention relates to the field of building ventilation design, in particular to a smoke discharging and ventilating structure for a building.
Background
Along with the development of science and technology, being promoting gradually to the requirement of building, wherein indoor ventilation, discharge fume become in the building comparatively important a ring, when the conflagration breaing out, the timely flue gas that forms after getting rid of the conflagration burning strives for the time for personnel's evacuation, guarantees safety, when not taking place the conflagration, acts as the effect of exhaust, guarantees exhibition building air health requirement, assurance personnel's comfort level.
Wherein, ventilation pipe is a municipal infrastructure for making the circulation of air, reduces harmful gas concentration, and in prior art, through the ventilation pipe of each region of indoor roof installation intercommunication to set up the vent on ventilation pipe and become conventional smoke exhaust, ventilation structure.
However, the problem that the area of the vent opening formed in the ventilation duct cannot be adjusted still exists in the prior art, when smoke needs to be discharged through the ventilation duct when a fire disaster occurs indoors, the suction force needs to be improved by increasing the electric power of the air cabinet in the prior art, and the purpose of enhancing the suction force in a local area is difficult to achieve through a mode of rapidly increasing the vent opening.
Disclosure of Invention
Therefore, the embodiment of the invention provides a smoke exhaust and ventilation structure for a building, which aims to solve the problem that the area of a ventilation opening formed in a ventilation pipeline in the prior art cannot be adjusted.
In order to achieve the above object, an embodiment of the present invention provides the following:
the utility model provides a building is discharged fume and is ventilated structure, is including installing a plurality of pipeline gallows at the roof to and through pipeline gallows fixed mounting at the air pipe and the wind cabinet of roof, its characterized in that: one end of the ventilation pipeline is connected with the input end of the air cabinet, the output end of the air cabinet is provided with an L-shaped pipeline which extends to the outer wall and has an upward opening, and an exhaust hood communicated with the L-shaped pipeline is arranged at the opening at the top end of the L-shaped pipeline;
install on the air pipe every one section distance with the air suction pipe of air pipe intercommunication, air suction pipe's bottom is equipped with the first vent that is the rectangle, and air suction pipe's inside is equipped with the layering and covers gradually the layering of first vent covers the mechanism, the gallows directly over air suction pipe is equipped with steerable the mechanism is carried to the layering that covers the mechanism and expandes, and this group install on air suction pipe's the side wall steerable carry the control box of mechanism.
In a preferred embodiment of the present invention, the first ventilation opening is located at a center of the lower surface of the air suction duct, and the area of the first ventilation opening is 70% of the area of the lower surface of the air suction duct.
As a preferred scheme of the present invention, the layered covering mechanism includes a first cover plate, a second cover plate and a third cover plate distributed from bottom to top, and the first cover plate, the second cover plate and the third cover plate are connected and lifted by being provided with guide posts, wherein the specific structure is as follows:
four corners of the first cover plate are respectively provided with guide posts, the first cover plate is connected with the air suction pipeline through four groups of guide posts, the first cover plate can completely cover the first ventilation opening, and the center of the first cover plate is provided with a second ventilation opening with the area of 35% of the lower surface of the air suction pipeline;
four corners of the second cover plate are respectively provided with guide posts, the second cover plate is connected with the first cover plate through four groups of guide posts, the second cover plate can completely cover the second ventilation opening, and a third ventilation opening with the area of 10% of the lower surface of the air suction pipeline is arranged at the center of the second cover plate;
and four corners of the third cover plate are respectively provided with guide posts, the third cover plate is connected with the second cover plate through four groups of guide posts, and the third cover plate can completely cover the third ventilation opening.
In a preferred embodiment of the present invention, the length of the guiding post is less than 1/3, and the first cover plate, the second cover plate and the third cover plate cannot be separated from the guiding post.
As a preferable scheme of the present invention, the lifting mechanism includes a first guide wheel installed on the duct hanger right above the air suction duct, and a second guide wheel installed on a corner on a side of the first guide wheel, a steel wire rope is connected to a center position of a top end of the third cover plate, the steel wire rope passes through an outer side of the air suction duct and extends into the control box after sequentially winding around the first guide wheel and the second guide wheel, and a guide ring through which the steel wire rope passes is provided at a center position of a top end of the air suction duct.
As a preferable scheme of the present invention, the inside of the control box is provided with longitudinally distributed adjusting mechanisms, each adjusting mechanism includes longitudinally distributed guide rails, each guide rail is provided with a guide rail slider which slides up and down through the guide rail, and each guide rail slider is provided with a slider pull rod extending out of the control box.
As a preferable scheme of the invention, the control box consists of a box body and a box cover, the box body is fixedly arranged on a wall body through bolts, and limiting blocks for limiting the guide rail sliding blocks are arranged in the box body and positioned at two sides of the top end of the guide rail.
As a preferred scheme of the invention, the box cover is provided with pull rod chutes longitudinally distributed and matched with the slide block pull rods, and the side of each pull rod chute is provided with three pull rod clamping grooves for limiting the slide block pull rods.
As a preferred scheme of the present invention, the distance between adjacent pull rod slots is the same as the length of the guide post, and the slider pull rod is clamped into three groups of pull rod slots from top to bottom, so that the third cover plate, the second cover plate and the first cover plate can be sequentially controlled to be completely lifted.
As a preferable scheme of the invention, the input end and the output end of the wind cabinet are communicated with two relatively independent spaces, the two spaces are communicated through a rotatable wind wheel, and a motor for controlling the rotation of the wind wheel is arranged in the wind cabinet.
The embodiment of the invention has the following advantages:
according to the invention, the layered covering mechanism is designed into a three-section folding structure, and the first vent at the bottom end of the air suction pipeline can be gradually covered in a layered manner by controlling the lifting of each section of structure, so that the area of the air suction opening at the bottom end of the air suction pipeline can be adjusted, and different use requirements can be conveniently met;
in addition, a control box for independently adjusting the group of air suction pipelines is arranged on the side of each group of air suction pipelines, and the air suction pipelines of the groups are uniformly distributed indoors.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic view of an overall connection in an embodiment of the present invention;
FIG. 2 is an overall side cross-sectional view of an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an air aspiration channel in an embodiment of the present invention;
FIG. 4 is a bottom view of an air aspiration channel in an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a control box in an embodiment of the present invention;
fig. 6 is a schematic view of the interior of the wind cabinet according to the embodiment of the present invention.
In the figure: 1-ventilating duct; 2-a wind cabinet; 3-L-shaped tubing; 4-an exhaust hood; 5-an air suction pipeline; 6-a layered covering mechanism; 7-a lifting mechanism; 8-a control box; 9-adjustment mechanism
201-wind wheel; 202-a motor;
501-a first vent; 502-a guide ring;
601-a first cover plate; 602-a second cover plate; 603-a third cover plate; 604-a guide post; 605-a second vent; 606-a third vent;
701-a first guide wheel; 702-a second guide wheel; 703-a steel wire rope;
801-a box body; 802-box cover; 803-a pull rod chute;
901-a guide rail; 902-rail slide; 903-slide rod.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 6, the invention provides a smoke discharging and ventilating structure for a building, which specifically comprises a plurality of pipeline hangers installed on a roof, a ventilating pipeline 1 and a wind cabinet 2 fixedly installed on the roof through the pipeline hangers, wherein one end of the ventilating pipeline 1 is connected with an input end of the wind cabinet 2, an L-shaped pipeline 3 extending to an outer wall and having an upward opening is arranged at an output end of the wind cabinet 2, and an exhaust hood 4 communicated with the L-shaped pipeline 3 is arranged at an opening at the top end of the L-shaped pipeline 3.
The input and the output of wind cabinet 2 communicate two relatively independent spaces to through being equipped with rotatable wind wheel 201 intercommunication between two spaces, be equipped with the rotatory motor 202 of control wind wheel 201 in the wind cabinet 2.
Air pipe 1 is installed at indoor roof through the pipeline gallows, through L shape pipeline 3 and the external intercommunication of installing at the outer wall, and the top opening installation at L shape pipeline 3 is by wind-force driven exhaust cap 4, make exhaust cap 4 inhale the air pipe 1 with the 3 intercommunications of L shape pipeline with the ambient air, and discharge into indoorly through a plurality of groups aspiration channel 5 of air pipe 1 intercommunication, or drive wind wheel 201 counter-rotation through the motor 202 that starts in the wind cabinet 2, can inhale with higher speed the ambient air and discharge into indoorly through a plurality of groups aspiration channel 5, indoor natural draft has been ensured.
As shown in fig. 1 to 4, an air suction duct 5 communicated with the ventilation duct 1 is installed on the ventilation duct 1 at intervals, a rectangular first vent 501 is arranged at the bottom end of the air suction duct 5, and a layered covering mechanism 6 capable of gradually covering the first vent 501 in a layered manner is arranged inside the air suction duct 5.
The first ventilation opening 501 is located at the center of the lower surface of the air suction duct 5, and the area of the first ventilation opening 501 is 70% of the area of the lower surface of the air suction duct 5.
The layered covering mechanism 6 comprises a first cover plate 601, a second cover plate 602 and a third cover plate 603 which are distributed from bottom to top, and the first cover plate 601, the second cover plate 602 and the third cover plate 603 are connected and lifted through a guide column 604, wherein the layered covering mechanism has the following specific structure:
four corners of the first cover plate 601 are respectively provided with guide posts 604, the first cover plate 601 is connected with the air suction pipeline 5 through four groups of guide posts 604, the first cover plate 601 can completely cover the first air vents 501, and the center of the first cover plate 601 is provided with second air vents 605 with the area of 35% of the lower surface of the air suction pipeline 5;
the four corners of the second cover plate 602 are respectively provided with guide posts 604, the second cover plate 602 is connected with the first cover plate 601 through four groups of guide posts 604, the second cover plate 602 can completely cover the second ventilation opening 605, and the center of the second cover plate 602 is provided with a third ventilation opening 606 with an area of 10% of the lower surface of the air suction pipeline 5;
the four corners of the third cover plate 603 are respectively provided with a guide post 604, and the third cover plate 603 is connected with the second cover plate 602 through four sets of guide posts 604, and the third cover plate 603 can completely cover the third vent 606.
The length of guide post 604 is less than 1/3 of the internal height of air suction duct 5, and first cover plate 601, second cover plate 602, and third cover plate 603 cannot be detached from guide post 604.
Establish layering cover mechanism 6 into three-section folding structure, through the lift of controlling every section structure, the lift height of every section structure is the length of guide post 604 promptly, can the layering cover the first vent 501 in 5 bottoms of aspiration channel gradually for the inlet scoop area of 5 bottoms of aspiration channel is adjustable, and in addition, each stage of the mechanism 6 of layering cover expandes the state and corresponds 5 vent areas of aspiration channel and do:
when the layered covering mechanism 6 is not unfolded, the ventilation opening at the bottom end of the air suction pipeline 5 is completely covered, and at the moment, the indoor air cannot be communicated with the outside through the air suction pipeline 5 and the ventilation pipeline 1;
when the third cover plate 603 is completely lifted, the air suction pipeline 5 is communicated with the indoor space through the third air vent 606 on the second cover plate 602, and the area of the air vent at the bottom end of the air suction pipeline 5 is 10% of the lower surface of the air suction pipeline, so that the air suction pipeline is suitable for daily use when a small amount of air is needed;
when the second cover plate 602 is completely lifted, the air suction pipeline 5 is communicated with the indoor space through the second air vent 605 on the first cover plate 601, and the area of the air vent at the bottom end of the air suction pipeline 5 is 35% of the lower surface of the air suction pipeline, so that the air suction pipeline is suitable for daily use when a large amount of ventilation is needed;
when the first cover plate 601 is completely lifted, the air suction pipeline 5 is communicated with the indoor space through the first vent 501 at the bottom end of the air suction pipeline, and the area of the vent at the bottom end of the air suction pipeline 5 is 70% of the area of the lower surface of the air suction pipeline, so that the air suction pipeline is suitable for being used when a large amount of indoor smoke is generated and needs to be discharged urgently and quickly.
In addition, because the length of the guide post 604 is less than 1/3 of the internal height of the air suction duct 5, the internal space of the air suction duct 5 can accommodate the fully unfolded layered covering mechanism 6, and when the layered covering mechanism 6 is not subjected to an upward pulling force, the first cover plate 601, the second cover plate 602, and the third cover plate 603 can naturally slide down to the original positions through the guide posts 604 at the four corners, so that the layered covering mechanism 6 can be conveniently used for multiple times.
As shown in fig. 2 and 5, the lifting frame directly above the air suction pipes 5 is provided with a lifting mechanism 7 capable of controlling the layered covering mechanism 6 to be unfolded, and a control box 8 capable of controlling the lifting mechanism 7 is installed on the side wall of the group of air suction pipes 5.
The lifting mechanism 7 comprises a first guide wheel 701 arranged on a pipeline hanger right above the air suction pipeline 5 and a second guide wheel 702 arranged at a corner on the side of the first guide wheel 701, a steel wire rope 703 is connected to the center position of the top end of the third cover plate 603, the steel wire rope 703 penetrates through the outer side of the air suction pipeline 5 and sequentially extends to the inside of the control box 8 after surrounding the first guide wheel 701 and the second guide wheel 702, and a guide circular ring 502 for the steel wire rope 703 to penetrate is arranged at the center position of the top end of the air suction pipeline 5.
The inside of control box 8 is equipped with longitudinally distributed adjustment mechanism 9, and adjustment mechanism 9 includes longitudinally distributed guide rail 901, is equipped with the guide rail slider 902 that slides from top to bottom through guide rail 901 on the guide rail 901, is equipped with the slider pull rod 903 that extends out control box 8 on the guide rail slider 902.
The control box 8 is composed of a box body 801 and a box cover 802, the box body 801 is fixedly installed on a wall body through bolts, and limiting blocks for limiting the guide rail sliding blocks 902 are arranged on two sides of the top end of the guide rail 901 in the box body 801.
The box cover 802 is provided with a pull rod sliding groove 803 which is longitudinally distributed and matched with the slider pull rod 903, and three pull rod clamping grooves used for limiting the slider pull rod 903 are arranged on the side of the pull rod sliding groove 803.
The distance between the adjacent pull rod clamping grooves 804 is the same as the length of the guide post 604, and the slider pull rod 903 is clamped into the three groups of pull rod clamping grooves from top to bottom to control the third cover plate 603, the second cover plate 602 and the first cover plate 601 to be completely lifted.
Through set up the control mechanism of this group of air suction pipe 5 vent of independent control on every group air suction pipe 5, make the user can be to indoor local area's ventilation, smoke exhaust efficiency adjusts, when treating that the rescue area produces a large amount of smog when indoor conflagration breaing out, need start wind cabinet 2, it is outdoor with smog discharge through a plurality of groups air suction pipe 5 on air pipe 1, stranded personnel or fire fighter accessible this moment adjust current regional control box 8, the vent of controlling current regional air suction pipe 5 is opened completely, make the current regional smoke exhaust efficiency reinforcing, can reduce the harm that the smog that produces caused to personnel when the conflagration, with this guarantee personnel's living environment.
The control box 8 specifically adjusts the ventilation opening of the air suction pipeline 5 in a mode of;
step 100, holding a slide block pull rod 903 extending out of the control box 8 and pulling down after a user is in a position for installing the control box 8;
step 200, when the slide block 903 drives the guide rail slide block 902 to descend along the guide rail 901, the steel wire rope 703 connected with the guide rail slide block can be pulled, and the steel wire rope 703 applies a pulling force to the layered covering mechanism 6 in the corresponding air suction pipeline 5 after passing through the second guide wheel 702 and the first guide wheel 701, so that the layered covering mechanism 6 starts to be unfolded;
step 300, when the sliding block pull rod 903 is pulled down to the three pull rod clamping grooves from top to bottom, the areas of the air suction openings corresponding to the air suction pipes 5 are respectively 10%, 35% and 70%, when the sliding block pull rod 903 is pulled down to the lowest end, the sliding block pull rod is clamped into the pull rod clamping groove at the bottom end, the air suction openings of the air suction pipes 5 are completely unfolded, and the smoke exhaust efficiency of the group of air suction pipes 5 is maximized.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (9)

1. The utility model provides a building is discharged fume and is ventilated structure, is including installing a plurality of pipeline gallows at the roof to and through pipeline gallows fixed mounting in air pipe (1) and wind cabinet (2) of roof, its characterized in that: one end of the ventilation pipeline (1) is connected with the input end of the air cabinet (2), the output end of the air cabinet (2) is provided with an L-shaped pipeline (3) which extends to the outer wall and has an upward opening, and an exhaust hood (4) communicated with the L-shaped pipeline (3) is arranged at the opening at the top end of the L-shaped pipeline (3);
the air suction pipeline is characterized in that an air suction pipeline (5) communicated with the air pipeline (1) is installed on the air pipeline (1) at intervals, a first rectangular vent (501) is arranged at the bottom end of the air suction pipeline (5), a layered covering mechanism (6) capable of gradually covering the first vent (501) in a layered mode is arranged inside the air suction pipeline (5), a lifting mechanism (7) capable of controlling the layered covering mechanism (6) to be unfolded is arranged on a lifting frame right above the air suction pipeline (5), and a control box (8) capable of controlling the lifting mechanism (7) is installed on the side wall of the air suction pipeline (5);
the layered covering mechanism (6) comprises a first cover plate (601), a second cover plate (602) and a third cover plate (603) which are distributed from bottom to top, the first cover plate (601), the second cover plate (602) and the third cover plate (603) are connected through a guide column (604) to realize lifting, and the layered covering mechanism has the following specific structure:
guide posts (604) are respectively arranged at four corners of the first cover plate (601), the first cover plate (601) can slide along the guide posts (604), the first cover plate (601) is connected with the air suction pipeline (5) through four groups of guide posts (604), the first cover plate (601) can completely cover the first ventilation opening (501), and a second ventilation opening (605) with the area of 35% of the lower surface of the air suction pipeline (5) is arranged at the center of the first cover plate (601);
guide posts (604) are respectively arranged at four corners of the second cover plate (602), the second cover plate (602) can slide along the guide posts (604), the second cover plate (602) is connected with the first cover plate (601) through four groups of guide posts (604), the second cover plate (602) can completely cover the second ventilation opening (605), and a third ventilation opening (606) with the area of 10% of the lower surface of the air suction pipeline (5) is arranged at the center of the second cover plate (602);
guide posts (604) are respectively arranged at four corners of the third cover plate (603), the third cover plate (603) can slide along the guide posts (604), the third cover plate (603) is connected with the second cover plate (602) through four groups of the guide posts (604), and the third cover plate (603) can completely cover the third ventilation opening (606).
2. A smoke evacuation and ventilation structure for buildings according to claim 1, wherein said first ventilation opening (501) is located at the center of the lower surface of said air suction duct (5), and the area of said first ventilation opening (501) is 70% of the area of the lower surface of said air suction duct (5).
3. A smoke evacuation and ventilation structure for buildings according to claim 1, characterized in that the length of said guiding post (604) is less than 1/3 of the inner height of said air suction duct (5), and said first cover plate (601), said second cover plate (602) and said third cover plate (603) cannot be detached from said guiding post (604).
4. A smoke exhaust and ventilation structure for building according to claim 1, wherein said lifting mechanism (7) comprises a first guide wheel (701) installed on the pipe hanger right above said air suction pipe (5), and a second guide wheel (702) installed on the side corner of said group of said first guide wheels (701), a steel cable (703) is connected to the center position of the top end of said third cover plate (603), and said steel cable (703) passes through the outside of said air suction pipe (5) and sequentially extends to the inside of said control box (8) after winding said first guide wheel (701) and said second guide wheel (702), and a guide ring (502) for said steel cable (703) to pass through is installed at the center position of the top end of said air suction pipe (5).
5. A smoke evacuation and ventilation structure for buildings according to claim 1, wherein the control box (8) is internally provided with longitudinally distributed adjusting mechanisms (9), the adjusting mechanisms (9) comprise longitudinally distributed guide rails (901), the guide rails (901) are provided with guide rail sliders (902) which slide up and down through the guide rails (901), and the guide rail sliders (902) are provided with slider pull rods (903) extending out of the control box (8).
6. A smoke exhaust and ventilation structure for buildings according to claim 5 is characterized in that the control box (8) is composed of a box body (801) and a box cover (802), the box body (801) is fixedly installed on a wall body through bolts, and limiting blocks for limiting the guide rail sliding block (902) are arranged on two sides of the top end of the guide rail (901) in the box body (801).
7. A smoke exhaust and ventilation structure for buildings according to claim 6, characterized in that the box cover (802) is provided with a pull rod sliding groove (803) which is longitudinally distributed and matched with the slide block pull rod (903), and the side of the pull rod sliding groove (803) is provided with three pull rod clamping grooves for limiting the slide block pull rod (903).
8. A smoke exhaust and ventilation structure for building according to claim 7, wherein the distance between adjacent draw bar slots (804) is the same as the length of the guide column (604), and the slide block draw bar (903) is clamped into three groups of draw bar slots (804) from top to bottom to control the third cover plate (603), the second cover plate (602) and the first cover plate (601) to be lifted completely.
9. A smoke exhaust and ventilation structure for buildings according to claim 1, characterized in that the input end and the output end of the wind cabinet (2) are communicated with two relatively independent spaces, and the two spaces are communicated with each other through a rotatable wind wheel (201), and a motor (202) for controlling the rotation of the wind wheel (201) is arranged in the wind cabinet (2).
CN202010235369.6A 2020-03-30 2020-03-30 Building smoke discharging and ventilating structure Active CN111425981B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010235369.6A CN111425981B (en) 2020-03-30 2020-03-30 Building smoke discharging and ventilating structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010235369.6A CN111425981B (en) 2020-03-30 2020-03-30 Building smoke discharging and ventilating structure

Publications (2)

Publication Number Publication Date
CN111425981A CN111425981A (en) 2020-07-17
CN111425981B true CN111425981B (en) 2021-06-15

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CN114353302B (en) * 2021-11-30 2023-01-24 湖北省地源洁能工程有限公司 Roof air pipe mounting structure

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