CN110925927B - Building air exit closing device - Google Patents
Building air exit closing device Download PDFInfo
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- CN110925927B CN110925927B CN201911277105.0A CN201911277105A CN110925927B CN 110925927 B CN110925927 B CN 110925927B CN 201911277105 A CN201911277105 A CN 201911277105A CN 110925927 B CN110925927 B CN 110925927B
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- exhaust channel
- fixedly connected
- gear
- air
- driving
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation 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
- F24F7/065—Ventilation 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 fan combined with single duct; mounting arrangements of a fan in a duct
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F2007/001—Ventilation with exhausting air ducts
Abstract
The invention discloses a building air outlet closing device which comprises a building body, wherein an air exhaust channel is arranged in the building body in a vertically through mode, an opening at the lower side of the air exhaust channel is communicated with a room, two ventilation plates are fixedly arranged in the air exhaust channel, through holes are arranged in the ventilation plates in a vertically through mode, a pressure reducing device is arranged between the through holes, the through holes at the lower side of the pressure reducing device are sealed, valves with upward openings are fixedly arranged in the through holes at the lower side of the through holes, and transmission devices are arranged in the inner walls at the left side and the right side of the air exhaust channel.
Description
Technical Field
The invention relates to the field of building closing devices, in particular to a building air outlet closing device.
Background
The air outlets are arranged in the building and are in a closed state under the ordinary condition, the air outlets are opened and discharge smoke when a fire disaster occurs indoors, escape of indoor personnel is facilitated, the ordinary air outlets discharge air naturally, the air discharging efficiency is low, the air outlets are the tail ends of a ventilation system, and when the power supply of the ventilation system is disconnected during the fire disaster, the air outlets cannot be opened smoothly to ventilate and discharge the smoke in time, and escape of the indoor personnel can be prevented.
Disclosure of Invention
The technical problem is as follows:
the general air outlet is used for naturally exhausting air, the air exhaust efficiency is low, and the air outlet cannot be smoothly opened for timely ventilation and smoke exhaust once the power supply of a ventilation system is powered off in a fire disaster.
In order to solve the problems, the embodiment designs a building air outlet closing device, which comprises a building body, wherein an air exhaust channel is arranged in the building body in a vertically through mode, an opening at the lower side of the air exhaust channel is communicated with the interior of the building body, two ventilation plates are fixedly arranged in the air exhaust channel, through holes are vertically through arranged in the ventilation plates, a pressure reducing device is arranged between the through holes, the pressure reducing device seals the through hole at the lower side, a valve with an upward opening is fixedly arranged in the through hole at the lower side, transmission devices are arranged in the inner walls at the left side and the right side of the air exhaust channel, the transmission devices are connected with the sealing devices through cam shafts, the transmission devices drive the pressure reducing devices through driving the cam shafts, so that the air pressure between the ventilation plates can be reduced, and the through holes at the lower side can, the indoor air and smoke can be sucked into the exhaust channel and discharged to the outside, a sealing device is arranged in the inner wall of the upper side of the exhaust channel, the sealing device seals the opening of the upper side of the exhaust channel, the sealing device is connected with the transmission devices on two sides through a transmission belt respectively, the transmission devices drive the sealing device through driving the transmission belt, an air outlet baffle in the sealing device slides and opens the opening of the upper side of the exhaust channel, an air inlet baffle is fixedly arranged at the opening of the lower side of the exhaust channel, smoke air can pass through the air inlet baffle to enter the exhaust channel, the air inlet baffle prevents foreign matters from entering and blocking the exhaust channel, a fan box is fixedly arranged in the exhaust channel, and two fan cavities are arranged in the fan box in a vertically through manner, the fan is rotationally arranged in the fan cavity, the exhaust motors are fixedly arranged in the fan box and drive the two fans to rotate, and air smoke in the exhaust channel is driven to flow from bottom to top. Preferably, the inner wall of one side of the fan cavity close to the air exhaust motor is fixedly connected with a heat insulation plate, a belt groove is communicated between the heat insulation plates, a middle belt wheel is rotatably arranged in the belt groove, the lower end of the middle belt wheel is fixedly connected with a driving shaft, the lower end of the driving shaft is in power connection with the air exhaust motor, the left side and the right side of the middle belt wheel are symmetrically and rotatably provided with symmetrical belt wheels, a connecting belt is connected between the symmetrical belt wheels and the middle belt wheel, the lower end of the symmetrical belt wheel is fixedly connected with a fan shaft, the lower end of the fan shaft is fixedly connected with the fan, the heat insulation plate is a heat insulation material product, the air exhaust motor is started, the middle belt wheel is driven to rotate by the driving shaft, the symmetrical belt wheels are driven to rotate by the connecting belt, thereby driving the air smoke to flow upwards.
Beneficially, the sealing device comprises a sliding guide cavity communicated with each other and arranged in the inner wall of the upper side of the exhaust channel, two air outlet baffles are slidably arranged in the sliding guide cavity, guide holes with opposite openings are formed in the air outlet baffles, guide rods are slidably connected in the guide holes, one ends of the guide holes, far away from the air outlet baffles, are fixedly connected to the inner wall of the sliding guide cavity, contact switches are fixedly arranged in end faces, close to each other, of the air outlet baffles, the contact switches are electrically connected to the transmission device, when the contact switches are in contact with each other, the air outlet baffles seal the openings of the upper side of the exhaust channel, the transmission device is stopped, racks are fixedly arranged in end faces of the air outlet baffles, gear cavities are symmetrically arranged in the inner wall of the lower side of the sliding guide cavity in a left-right mode, connecting gears are rotatably arranged in the, the connecting gear is internally and fixedly connected with a connecting shaft, the front end of the connecting shaft is fixedly connected with a driven belt wheel, the upper end of the driving belt is respectively connected with the driven belt wheels on two sides, the driving device drives the driving belt to drive the driven belt wheels to rotate, then the connecting shaft drives the connecting gear to rotate, then the rack drives the air outlet baffle to slide, and the guide rod guides the sliding of the air outlet baffle.
Beneficially, the transmission device comprises transmission cavities symmetrically arranged in the inner walls of the left side and the right side of the exhaust channel, a driving bevel gear is rotatably arranged in the transmission cavities, a motor shaft is fixedly connected in the driving bevel gear, a driving motor is fixedly arranged in the inner wall of the transmission cavity on the side far away from the exhaust channel, the motor shaft is in power connection with the driving motor, a sliding gear is rotatably arranged on the side of the driving bevel gear close to the exhaust channel, the sliding gear is fixedly connected to the motor shaft, a fixed gear is meshed at the upper end of the sliding gear, one end of the cam shaft far away from the exhaust channel is fixedly connected to the fixed gear, one end of the cam shaft close to the symmetry center is connected to the pressure reducing device, a sector bevel gear is meshed at the rear end of the driving bevel gear, a driving belt wheel is, the driving motor is started, the motor shaft drives the driving bevel gear and the sliding gear to rotate, the sliding gear drives the fixed gear to rotate, the pressure reducing device is driven by the cam shaft, the driving bevel gear drives the sector bevel gear to rotate, the driving belt wheel is driven to rotate, and the driving belt drives the sealing device.
Preferably, an electromagnetic spring is fixedly connected between the sliding gear and the motor shaft, and the electromagnetic spring is electrified to drive the sliding gear to slide, so that the sliding gear is meshed with the fixed gear.
Beneficially, the pressure reduction device comprises a connecting rod arranged between the through holes in a sliding mode, sealing plugs are fixedly connected to the upper end and the lower end of the connecting rod, the sealing plugs on the lower side can seal the through holes on the lower side, reciprocating sliding plates are slidably arranged between the ventilating plates and fixedly connected to the connecting rod, cams are symmetrically arranged on the left side and the right side of the connecting rod and fixedly connected to the cam shafts on the two sides respectively, a reset spring is fixedly connected between the reciprocating sliding plates and the ventilating plates on the upper side, the fixed gear rotates and drives the cams to rotate through the cam shafts, the reciprocating sliding plates are further pushed to slide, the reciprocating sliding plates slide up and down under the elastic force action of the reset spring, and then the connecting rod drives the sealing plugs to slide so as to periodically communicate the through holes on the two sides.
The invention has the beneficial effects that: according to the invention, rapid ventilation and smoke exhaust are carried out by repeatedly reducing the pressure and exhausting air, so that the smoke exhaust efficiency can be improved, and the two driving motors are independent motors, so that ventilation and smoke exhaust can be carried out by starting any one driving motor in case of fire, and the fault tolerance rate is improved.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
FIG. 1 is a schematic view of the overall structure of a closure device for an air outlet of a building according to the present invention;
FIG. 2 is an enlarged schematic view of "A" of FIG. 1;
FIG. 3 is an enlarged schematic view of "B" of FIG. 1;
FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 1;
FIG. 5 is an enlarged schematic view of "D" of FIG. 2;
FIG. 6 is a schematic view of the structure in the direction "E-E" of FIG. 3.
Detailed Description
The invention will now be described in detail with reference to fig. 1-6, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to a building air outlet closing device, which comprises a building body 11, wherein an air exhaust channel 15 is arranged in the building body 11 in a vertically through manner, an opening at the lower side of the air exhaust channel 15 is communicated with the indoor space, two ventilation plates 12 are fixedly arranged in the air exhaust channel 15, through holes 21 are arranged in the ventilation plates 12 in a vertically through manner, a pressure reducing device 100 is arranged between the through holes 21, the through hole 21 at the lower side is sealed by the pressure reducing device 100, a valve 13 with an upward opening is fixedly arranged in the through hole 21 at the lower side, transmission devices 102 are arranged in the inner walls at the left side and the right side of the air exhaust channel 15, the transmission devices 102 are connected with the sealing devices 101 through a cam shaft 35, the transmission devices 102 drive the pressure reducing device 100 through driving the cam shaft 35, so that the air pressure between the ventilation plates 12 can be reduced, the indoor air and smoke can be sucked into the exhaust channel 15 and discharged to the outside, a sealing device 101 is arranged in the inner wall of the upper side of the exhaust channel 15, the sealing device 101 seals the opening of the upper side of the exhaust channel 15, the sealing device 101 is connected with the transmission devices 102 on two sides through a transmission belt 24, the transmission devices 102 drive the sealing device 101 through driving the transmission belt 24, an air outlet baffle 29 in the sealing device 101 slides and opens the opening of the upper side of the exhaust channel 15, an air inlet baffle 14 is fixedly arranged at the opening of the lower side of the exhaust channel 15, smoke air can pass through the air inlet baffle 14 and enter the exhaust channel 15, the air inlet baffle 14 prevents foreign matters from entering and blocking the exhaust channel 15, and a fan box 23 is fixedly arranged in the exhaust channel 15, two fan cavities 22 are vertically communicated in the fan box 23, a fan 43 is rotatably arranged in each fan cavity 22, an exhaust motor 44 is fixedly arranged in the fan box 23, and the exhaust motor 44 drives the two fans 43 to rotate and drives air smoke in the exhaust channel 15 to flow from bottom to top.
Beneficially, a heat insulation board 51 is fixedly connected to an inner wall of one side of the fan cavity 22 close to the exhaust motor 44, a belt groove 47 is communicated between the heat insulation boards 51, a middle belt wheel 46 is rotatably arranged in the belt groove 47, a driving shaft 45 is fixedly connected to a lower end of the middle belt wheel 46, the lower end of the driving shaft 45 is in power connection with the exhaust motor 44, symmetrical belt wheels 49 are symmetrically and rotatably arranged on left and right sides of the middle belt wheel 46, a connection belt 48 is connected between the symmetrical belt wheels 49 and the middle belt wheel 46, a fan shaft 50 is fixedly connected to a lower end of the symmetrical belt wheel 49, a lower end of the fan shaft 50 is fixedly connected to the fan 43, due to high smoke temperature, in order to avoid damage to the connection belt 48, the heat insulation board 51 is a heat insulation material product, the exhaust motor 44 is started, the driving shaft 45 drives the middle belt wheel, the fan 43 is driven to rotate by the fan shaft 50, and the air smoke is driven to flow upward.
According to the embodiment, the following detailed description will be made on the sealing device 101, where the sealing device 101 includes a sliding guide cavity 34 disposed in the inner wall of the upper side of the exhaust channel 15 and communicated with each other, two air outlet baffles 29 are slidably disposed in the sliding guide cavity 34, a guide hole 30 with opposite openings is disposed in each air outlet baffle 29, a guide rod 33 is slidably connected in the guide hole 30, one end of the guide hole 30, which is far from the air outlet baffle 29, is fixedly connected to the inner wall of the sliding guide cavity 34, a contact switch 31 is fixedly disposed in one end face of each air outlet baffle 29, which is close to each other, the contact switch 31 is electrically connected to the transmission device 102, when the contact switches 31 are in contact with each other, the air outlet baffles 29 close the opening of the upper side of the exhaust channel 15, at this time, the transmission device 102 is stopped, and a, lead bilateral symmetry's in 34 downside inner walls of smooth chamber to be equipped with gear chamber 25, gear chamber 25 internal rotation is equipped with connecting gear 28, connecting gear 28 upper end mesh in mutually the rack 32, connecting gear 28 internal link has connecting axle 26, connecting axle 26 front end link has driven pulleys 27, two drive belt 24 upper end is connected respectively in both sides driven pulleys 27, transmission 102 drive belt 24 drives driven pulleys 27 rotates, and then passes through connecting axle 26 drives connecting gear 28 rotates, and then passes through rack 32 drive air outlet baffle 29 slides, guide bar 33 is right air outlet baffle 29's slip is led.
According to the embodiment, the transmission device 102 is described in detail below, the transmission device 102 includes transmission cavities 53 symmetrically disposed in the left and right inner walls of the exhaust channel 15, a drive bevel gear 40 is rotatably disposed in the transmission cavities 53, a motor shaft 38 is fixedly connected to the drive bevel gear 40, a drive motor 41 is fixedly disposed in the inner wall of the transmission cavity 53 on the side away from the exhaust channel 15, the motor shaft 38 is connected to the drive motor 41, a sliding gear 36 is rotatably disposed on the drive bevel gear 40 on the side close to the exhaust channel 15, the sliding gear 36 is fixedly connected to the motor shaft 38, a fixed gear 42 is engaged with the upper end of the sliding gear 36, one end of the cam shaft 35 away from the exhaust channel 15 is fixedly connected to the fixed gear 42, one end of the cam shaft 35 close to the symmetrical center is connected to the pressure reducing device 100, the rear end of the drive bevel gear 40 is engaged with a sector bevel gear 39, the rear end of the sector bevel gear 39 is fixedly connected with a drive belt wheel 52, the lower end of the transmission belt 24 is connected with the drive belt wheel 52, the drive motor 41 is started, the drive bevel gear 40 and the sliding gear 36 are driven to rotate through the motor shaft 38, the sliding gear 36 drives the fixed gear 42 to rotate, the decompression device 100 is driven through the cam shaft 35, the drive bevel gear 40 drives the sector bevel gear 39 to rotate, the drive belt wheel 52 is driven to rotate, and the sealing device 101 is driven through the transmission belt 24.
Advantageously, an electromagnetic spring 37 is fixed between the sliding gear 36 and the motor shaft 38, and the electromagnetic spring 37 is energized to slide the sliding gear 36, so that the sliding gear 36 is meshed with the fixed gear 42.
According to the embodiment, the decompression device 100 will be described in detail below, the decompression device 100 includes a connecting rod 18 slidably disposed between the through holes 21, sealing plugs 16 are fixedly connected to upper and lower ends of the connecting rod 18, the sealing plugs 16 on the lower side can seal the through holes 21 on the lower side, a reciprocating slide plate 19 is slidably disposed between the ventilation plates 12, the reciprocating slide plate 19 is fixedly connected to the connecting rod 18, cams 17 are symmetrically disposed on left and right sides of the connecting rod 18, the cams 17 on both sides are respectively fixedly connected to the cam shafts 35 on both sides, a return spring 20 is fixedly connected between the reciprocating slide plate 19 and the ventilation plate 12 on the upper side, the fixed gear 42 rotates and drives the cams 17 to rotate through the cam shafts 35, so as to push the reciprocating slide plate 19 to slide, and the reciprocating slide plate 19 slides up and down reciprocally under the elastic force of the return spring 20, the connecting rod 18 drives the sealing plug 16 to slide, so as to periodically communicate the through holes 21 on the two sides.
The following will describe in detail the use steps of a closure device for an air outlet of a building with reference to fig. 1 to 6:
initially, the air outlet baffle 29 closes the upper opening of the exhaust passage 15, and the lower sealing plug 16 closes the lower through hole 21, and the driving bevel gear 40 is engaged with the sector bevel gear 39, and the sliding gear 36 is not engaged with the fixed gear 42.
When a fire breaks out indoors, the driving motor 41 and the exhaust motor 44 are started, and the electromagnetic spring 37 is energized to push the sliding gear 36 to slide and engage with the fixed gear 42, the driving motor 41 drives the driving bevel gear 40 and the sliding gear 36 to rotate through the motor shaft 38, and the driving bevel gear 40 drives the sector bevel gear 39 to rotate, and further drives the driving pulley 52 to rotate, and further drives the driven pulley 27 to rotate through the driving belt 24, and further drives the connecting gear 28 to rotate through the connecting shaft 26, and further drives the air outlet baffle 29 to slide through the rack 32, and further opens the upper opening of the exhaust passage 15, when the driving bevel gear 40 and the sector bevel gear 39 disengage, the upper opening of the exhaust passage 15 is completely opened, the sliding gear 36 rotates and drives the fixed gear 42 to rotate, and further drives the cam 17 to rotate through the cam shaft 35, and further, the reciprocating slide plate 19 slides up and down under the action of the elastic force of the return spring 20, and then the connecting rod 18 drives the sealing plug 16 to slide, and then the through holes 21 on both sides are periodically communicated, at this time, the smoke flows to the outside through the air inlet baffle 14, the through holes 21 and the exhaust passage 15, the valve 13 can avoid the smoke from flowing back, the exhaust motor 44 drives the middle belt wheel 46 to rotate through the driving shaft 45, thereby driving the symmetrical belt wheels 49 to rotate through the connecting belt 48, further driving the fan 43 to rotate through the fan shaft 50, thereby driving the smoke in the exhaust passage 15 to flow from bottom to top, when the sealing plug 16 closes the through hole 21 at the lower side, the fan 43 rotates and draws smoke up between the ventilation board 12, at which time the air pressure between the ventilation board 12 decreases, when the lower sealing plug 16 reopens the lower through hole 21, the smoke in the chamber can quickly flow upward through the valve 13 by the air pressure difference.
When the exhaust passage 15 is closed again, the driving motor 41 is started reversely, the driving bevel gear 40 is driven to rotate reversely by the motor shaft 38, the sector bevel gear 39, the driving pulley 52 and the transmission belt 24 drive the closing device 101 to close the upper opening of the exhaust passage 15 again, at the moment, the driving motor 41 is stopped, the electromagnetic spring 37 is powered off, the sliding gear 36 is disengaged from the fixed gear 42, at the moment, the reciprocating sliding plate 19 is pushed to slide downwards under the action of the elastic force of the return spring 20, and the connecting rod 18 and the sealing plug 16 are driven to slide downwards until the sealing plug 16 on the lower side closes the through hole 21 on the lower side.
In case of fire, the ventilation system may be damaged by the fire, and the driving motor 41 may be affected by the fire or may not be started, so that the driving motors 41 on both sides are two independent motors, and the exhaust channel 15 can be opened for ventilation and smoke exhaust as long as any one of the driving motors 41 can be started.
The invention has the beneficial effects that: according to the invention, rapid ventilation and smoke exhaust are carried out by repeatedly reducing the pressure and exhausting air, so that the smoke exhaust efficiency can be improved, and the two driving motors are independent motors, so that ventilation and smoke exhaust can be carried out by starting any one driving motor in case of fire, and the fault tolerance rate is improved.
In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.
Claims (1)
1. The utility model provides a building air exit closing means, includes the building body, its characterized in that: an air exhaust channel is arranged in the building body in a vertically through mode, an opening at the lower side of the air exhaust channel is communicated with the indoor space, two ventilation plates are fixedly arranged in the air exhaust channel, through holes are arranged in the ventilation plates in a vertically through mode, a pressure reducing device is arranged between the through holes, and the through holes at the lower side of the pressure reducing device are sealed by the pressure reducing device; a valve with an upward opening is fixedly arranged in the through hole on the lower side; the transmission devices are arranged in the inner walls of the left side and the right side of the exhaust channel and are connected with the sealing devices through cam shafts; the inner wall of the upper side of the air exhaust channel is internally provided with a sealing device, the sealing device seals the upper side opening of the air exhaust channel, the sealing device is connected with the transmission devices on the two sides through a transmission belt respectively, and an air outlet baffle in the sealing device slides and opens the upper side opening of the air exhaust channel; an air inlet baffle is fixedly arranged at an opening at the lower side of the air exhaust channel, smoke air can pass through the air inlet baffle and enter the air exhaust channel, and foreign matters are prevented from entering and blocking the air exhaust channel by the air inlet baffle; a fan box is fixedly arranged in the air exhaust channel, two fan cavities are arranged in the fan box in a vertically through manner, a fan is rotatably arranged in each fan cavity, and an air exhaust motor is fixedly arranged in each fan box;
the inner wall of one side, close to the exhaust motor, of the fan cavity is fixedly connected with heat insulation plates, belt grooves are communicated among the heat insulation plates, middle belt wheels are rotatably arranged in the belt grooves, the lower ends of the middle belt wheels are fixedly connected with a driving shaft, and the lower end of the driving shaft is in power connection with the exhaust motor; the left side and the right side of the middle belt wheel are symmetrically provided with symmetrical belt wheels in a rotating mode, a connecting belt is connected between the symmetrical belt wheels and the middle belt wheel, the lower ends of the symmetrical belt wheels are fixedly connected with a fan shaft, and the lower end of the fan shaft is fixedly connected with the fan;
the sealing device comprises a guide sliding cavity communicated with the air exhaust channel and arranged in the inner wall of the upper side of the air exhaust channel, the two air outlet baffles are arranged in the guide sliding cavity in a sliding manner, guide holes with opposite openings are formed in the air outlet baffles, guide rods are connected in the guide holes in a sliding manner, and one ends of the guide holes, far away from the air outlet baffles, are fixedly connected to the inner wall of the guide sliding cavity; a contact switch is fixedly arranged in one end face of the air outlet baffle plate, which is close to each other, and the contact switch is electrically connected with the transmission device; a rack is fixedly arranged in the lower end face of the air outlet baffle, gear cavities are symmetrically arranged in the inner wall of the lower side of the sliding guide cavity in a left-right mode, a connecting gear is rotationally arranged in each gear cavity, the upper end of the connecting gear is meshed with the rack, a connecting shaft is fixedly connected in the connecting gear, a driven belt wheel is fixedly connected to the front end of the connecting shaft, and the upper ends of the two driving belts are respectively connected to the driven belt wheels on the two sides;
the transmission device comprises transmission cavities which are symmetrically arranged in the inner walls of the left side and the right side of the exhaust channel, a driving bevel gear is rotatably arranged in the transmission cavities, a motor shaft is fixedly connected in the driving bevel gear, a driving motor is fixedly arranged in the inner wall of one side of the transmission cavity, which is far away from the exhaust channel, and the motor shaft is in power connection with the driving motor; a sliding gear is rotatably arranged on one side, close to the air exhaust channel, of the driving bevel gear, the sliding gear is fixedly connected to the motor shaft, a fixed gear is meshed at the upper end of the sliding gear, one end, far away from the air exhaust channel, of the cam shaft is fixedly connected to the fixed gear, and one end, close to the symmetrical center, of the cam shaft is connected to the pressure reducing device; the rear end of the driving bevel gear is meshed with a sector bevel gear, the rear end of the sector bevel gear is fixedly connected with a driving belt wheel, and the lower end of the driving belt is connected to the driving belt wheel;
an electromagnetic spring is fixedly connected between the sliding gear and the motor shaft;
the pressure reducing device comprises a connecting rod which is arranged between the through holes in a sliding manner, the upper end and the lower end of the connecting rod are fixedly connected with sealing plugs, the sealing plugs on the lower side can seal the through holes on the lower side, a reciprocating sliding plate is arranged between the ventilating plates in a sliding manner, and the reciprocating sliding plate is fixedly connected to the connecting rod; the left side and the right side of the connecting rod are symmetrically provided with cams, the cams on the two sides are fixedly connected with the cam shafts on the two sides respectively, and a return spring is fixedly connected between the reciprocating sliding plate and the ventilating plate on the upper side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911277105.0A CN110925927B (en) | 2019-12-12 | 2019-12-12 | Building air exit closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911277105.0A CN110925927B (en) | 2019-12-12 | 2019-12-12 | Building air exit closing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110925927A CN110925927A (en) | 2020-03-27 |
| CN110925927B true CN110925927B (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911277105.0A Active CN110925927B (en) | 2019-12-12 | 2019-12-12 | Building air exit closing device |
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| CN (1) | CN110925927B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112542019B (en) * | 2020-12-02 | 2022-07-22 | 江苏新力科技实业有限公司 | From sensor of taking labyrinth alarm system |
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| CN2180263Y (en) * | 1994-01-07 | 1994-10-26 | 吕文志 | Miniature electric sucker |
| JPH08271003A (en) * | 1995-04-03 | 1996-10-18 | Misawa Homes Co Ltd | Ventilation structure |
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| CN201764613U (en) * | 2010-08-24 | 2011-03-16 | 冯静 | Natural ventilator inside highrise building |
| CN105257830A (en) * | 2015-10-21 | 2016-01-20 | 广东科艺普实验室设备研制有限公司 | Air volume adjusting valve with novel structure |
| CN208042388U (en) * | 2017-12-29 | 2018-11-02 | 石狮市酷瑞电气有限责任公司 | A kind of frequency converter computer room negative pressure adjustment structure |
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Effective date of registration: 20201026 Address after: 225300 No.01, building 1, xintaiyuan community, Jichuan West Road, Mingzhu street, pharmaceutical high tech Industrial Development Zone, Taizhou City, Jiangsu Province Applicant after: Jiangsu Tongye Construction Engineering Co., Ltd Address before: 312000 Majiabu 47, Dongcun, Baiguan Street Road, Shangyu District, Shaoxing City, Zhejiang Province Applicant before: Shaoxing Doka Machinery Equipment Co.,Ltd. |
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