Fireproof air pipe with internal supporting structure

Abstract

The utility model discloses a fireproof air duct with an internal supporting structure, which belongs to the technical field of fireproof air ducts and comprises a fireproof air duct body, connecting discs are fixed at the left end and the right end of the fireproof air duct body, and fixing plates are in bolted connection with the right side of the inside of the fireproof air duct body; according to the fireproof air pipe with the internal supporting structure, a rotating rod is connected to the interior of the fixing plate on the left side in a penetrating mode. According to the fireproof air pipe with the internal supporting structure, the interior of the fireproof air pipe body can be supported and protected through the arranged supporting plates and connecting pieces, impact force can be counteracted through elastic force of buffer springs, then the fireproof air pipe body is prevented from deforming, and the first blocking plate and the second blocking plate move, so that the fireproof air pipe body is prevented from being deformed. The first ventilation opening and the second ventilation opening are not blocked any more, and at the moment, smoke can be quickly exhausted from the first ventilation opening and the second ventilation opening, so that the smoke exhaust efficiency is improved, and quick and safe evacuation of personnel is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof air ducts, in particular to a fireproof air duct with an internal supporting structure. Background Art

[0002] The fireproof air duct is an important part of the ventilation system inside and outside the building. It has the characteristics of good fireproof performance, corrosion resistance and non-deformation, and can prevent the spread of fire when a fire occurs. For example, a new type of fireproof air duct with the publication number "CN2172272668U" can realize the rapid installation of the fireproof air duct by processing the end faces of the two sides of the fireproof air duct into bosses and slide grooves respectively. The sealing plate is connected by bolts at the top connection of the fireproof air duct, so that the connection between the fireproof air ducts can be made tighter and the sealing is stronger; by installing a fireproof baffle on the inner bottom of the fireproof air duct two, it can be realized that after the flame enters the fireproof air duct, under the monitoring of the temperature sensor, the fireproof baffle is driven by the motor drive device to rise, so as to block the path of the fire spreading along the air duct;

[0003] When the above mechanism is in use, the two side end faces of the fireproof air duct are respectively processed into bosses and slide grooves, so that the fireproof air duct can be quickly installed. However, once the fireproof air duct encounters a collision, the fireproof air duct will be deformed due to the lack of internal supporting structure, making it impossible to continue to use. At the same time, the smoke inside the fireproof air duct is only discharged from one outlet, resulting in a slow smoke discharge speed, which makes it impossible for people to evacuate quickly and safely.

[0004] Therefore, we proposed that the fireproof air duct with internal support structure can solve the above problems well. Utility Model Content

[0005] The purpose of the utility model is to provide a fireproof air duct with an internal support structure to solve the problem proposed in the above background technology that once the fireproof air duct encounters an impact, the fireproof air duct will be deformed due to the lack of internal support structure, making it impossible to continue to use it. At the same time, the smoke inside the fireproof air duct is only discharged from one outlet, resulting in a slow smoke discharge speed, making it impossible to evacuate people quickly and safely.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fireproof air duct with an internal support structure, comprising a fireproof air duct body, both left and right ends of the fireproof air duct body are fixed with connecting plates, and the right side inside the fireproof air duct body is bolted with a fixing plate;

[0007] A fireproof air duct with an internal support structure, further comprising:

[0008] A rotating rod is connected through the interior of the fixed plate on the left side, and a movable gear is fixedly mounted on the outer side of the rotating rod, and a rack is symmetrically arranged about the center point of the rotating rod inside the fireproof air duct body;

[0009] The left and right sides of the fireproof air duct body are both provided with first vents, and the upper and lower sides of the fireproof air duct body are both provided with second vents, and the inner walls of the two second vents are both provided with second blocking plates;

[0010] The inner walls of the two first vents are both provided with a first blocking plate, a support block is provided in the middle position inside the fireproof air duct body, and a connecting piece is provided at an equal angle between the support block and the fireproof air duct body;

[0011] The connecting piece extends into the interior of the supporting block away from the inner wall of the fireproof air duct body, and a buffer spring is installed between the end of the connecting piece and the inner wall of the supporting block.

[0012] Preferably, the support block is arranged in a "cross" shape, the end of the connecting piece away from the fireproof air duct body is arranged in a "T" shape, and the connecting piece forms an elastic telescopic structure through a buffer spring.

[0013] Preferably, the movable gear is rotationally connected to the fixed plate, the outer side of the first sealing plate is slidingly connected to the inner wall of the first vent, and one side of the first sealing plate is fixedly connected to one end of the rack.

[0014] Preferably, threaded rods are symmetrically arranged inside the fireproof duct body about the center point of the movable gear, and the opposite ends of the two threaded rods are connected to the outer side of the movable gear through a bevel gear set. A shell is installed on the outer side of the bevel gear set. The movable gear is connected to the fireproof duct body through a traction rope, and one end of the traction rope is wrapped around the shaft end of the movable gear, and the other end of the traction rope is fixed to the bottom of the inner wall of the fireproof duct body.

[0015] Preferably, a vortex spring is installed at the connection position between the rotating rod and the right fixed plate, and the threaded rod and the left fixed plate are rotationally connected.

[0016] Preferably, a vortex spring is installed at the connection position between the rotating rod and the right fixed plate, and the threaded rod and the left fixed plate are rotationally connected.

[0017] Preferably, the second blocking plate and the threaded rod are threadedly connected, and the second blocking plate and the limiting rod are slidably connected.

[0018] Compared with the prior art, the beneficial effects of the utility model are: the fireproof air duct with an internal support structure adopts a new structural design, the specific contents of which are as follows:

[0019] (1) The support plate and the connecting piece are provided to support and protect the interior of the fireproof duct body, so that when the fireproof duct body is hit, the connecting piece will be moved by force and squeeze the buffer spring. At this time, the elastic force of the buffer spring is used to generate a reverse force, which can offset the impact force and thus prevent the fireproof duct body from being deformed;

[0020] (2) When the smoke and flame inside the fireproof duct body become larger, the traction rope will be melted, and then the pulling force on the rotating rod will be lost. At this time, the rotating rod will reverse under the stored force of the vortex spring, and drive the movable gear to rotate, so that the two racks move in opposite directions, and drive the two first blocking plates to move in opposite directions. At this time, the first blocking plate no longer blocks the first vent, and then the rotating rod uses the bevel gear set to drive the two threaded rods to rotate, so that the second blocking plate moves in the opposite direction and no longer blocks the second vent. At this time, the smoke inside the fireproof duct body will be quickly discharged from the first vent and the second vent, thereby improving the smoke exhaust efficiency and ensuring the rapid and safe evacuation of personnel;

[0021] Furthermore, when the second blocking plate moves on the threaded rod, the second blocking plate can be limited by the provided limiting rod to prevent the second blocking plate from rotating along with the rotation of the threaded rod;

[0022] Furthermore, when the movable gear drives the two racks to move, the two racks can slide stably on the fixed plate by using the provided sliding block. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0024] Figure 2 This is a side view of the structure of the movable gear and rack of the utility model;

[0025] Figure 3 This is a schematic diagram of the side section structure of the support block of the utility model;

[0026] Figure 4 This is a side view of the bevel gear set and threaded rod structure of the utility model;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the support block and the connecting piece of the utility model;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the movable gear and rack of the utility model;

[0029] Figure 7 For this utility model Figure 1 Enlarged structural diagram at A in the middle.

[0030] In the figure: 1. fireproof air duct body; 2. connecting plate; 3. fixing plate; 4. movable gear; 5. rotating rod; 6. rack; 7. first vent; 8. second vent; 9. first blocking plate; 10. second blocking plate; 11. threaded rod; 12. traction rope; 13. outer shell; 14. vortex spring; 15. limit rod; 16. bevel gear set; 17. support block; 18. connecting piece; 19. slider; 20. buffer spring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-Figure 7 , the utility model provides the following technical solutions: a fireproof air duct with an internal support structure;

[0033] Embodiment 1: In order to solve the problem that once the fireproof air duct encounters an impact, the fireproof air duct will be deformed due to the lack of internal support structure, resulting in the inability to continue to use, and the smoke inside the fireproof air duct is only discharged from one outlet, resulting in a slow smoke discharge speed, making it impossible for personnel to evacuate quickly and safely, the following solution is disclosed, and specific reference is made to Figure 1 , Figure 3 and Figure 5 As shown, it includes a fireproof air duct body 1, the left and right ends of the fireproof air duct body 1 are fixed with connecting plates 2, and the right side inside the fireproof air duct body 1 is bolted with a fixing plate 3;

[0034] It also includes: a support block 17 is arranged in the middle position inside the fireproof air duct body 1, and a connecting piece 18 is arranged at an equal angle between the supporting block 17 and the fireproof air duct body 1; the connecting piece 18 extends into the supporting block 17 away from the inner wall of the fireproof air duct body 1, and a buffer spring 20 is installed between the end of the connecting piece 18 and the inner wall of the supporting block 17, the supporting block 17 is arranged in a "cross" shape, and the end of the connecting piece 18 away from the fireproof air duct body 1 is arranged in a "T" shape, and the connecting piece 18 forms an elastic telescopic structure through the buffer spring 20;

[0035] By setting the support block 17 and the connecting piece 18, the interior of the fireproof duct body 1 can be supported and protected, so that when the fireproof duct body 1 is hit, the connecting piece 18 will be moved by the force and squeeze the buffer spring 20. At this time, the elastic force of the buffer spring 20 is used to generate a reverse force, which can offset the impact force and thereby avoid deformation of the fireproof duct body 1.

[0036] Embodiment 2: Different from Embodiment 1, this embodiment utilizes the first blocking plate 9 and the second blocking plate 10 to move, so that the smoke in the fireproof air duct body 1 can be quickly discharged from the first ventilation port 7 and the second ventilation port 8, thereby improving the smoke exhaust efficiency and ensuring the rapid and safe evacuation of personnel. For details, refer to Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, a rotating rod 5 is connected to the inside of the left fixed plate 3, and a movable gear 4 is fixedly mounted on the outside of the rotating rod 5, and a rack 6 is symmetrically arranged about the center point of the rotating rod 5 inside the fireproof air duct body 1; first vents 7 are opened on the left and right sides of the inside of the fireproof air duct body 1, and second vents 8 are opened on the upper and lower sides of the inside of the fireproof air duct body 1, and second blocking plates 10 are arranged on the inner walls of the two second vents 8; first blocking plates 9 are arranged on the inner walls of the two first vents 7, the movable gear 4 is rotatably connected to the fixed plate 3, the outer side of the first blocking plate 9 and the inner wall of the first vent 7 are fitted and slidably connected, and the first blocking plate 9 is One side is fixedly connected to one end of the rack 6, and a threaded rod 11 is symmetrically arranged in the upper and lower parts of the fireproof air duct body 1 about the center point of the movable gear 4. A vortex spring 14 is installed at the connection position between the rotating rod 5 and the right fixed plate 3. The threaded rod 11 and the left fixed plate 3 are rotatably connected, and the opposite ends of the two threaded rods 11 are connected to the outer side of the movable gear 4 through a bevel gear set 16. A housing 13 is installed on the outer side of the bevel gear set 16. The movable gear 4 is connected to the fireproof air duct body 1 through a traction rope 12, and one end of the traction rope 12 is wound around the shaft end of the movable gear 4, and the other end of the traction rope 12 is fixed to the bottom of the inner wall of the fireproof air duct body 1;

[0037] When the smoke and flame inside the fireproof duct body 1 become larger, the traction rope 12 will be melted, and then the pulling on the rotating rod 5 will be lost. At this time, the rotating rod 5 reverses under the stored force of the vortex spring 14, and drives the movable gear 4 to rotate, so that the two racks 6 move in opposite directions, and drive the two first blocking plates 9 to move in opposite directions. At this time, the first blocking plate 9 no longer blocks the first vent 7, and then the rotating rod 5 uses the bevel gear set 16 to drive the two threaded rods 11 to rotate, so that the second blocking plate 10 moves in the opposite direction and no longer blocks the second vent 8. At this time, the smoke in the fireproof duct body 1 will be quickly discharged from the first vent 7 and the second vent 8, thereby improving the smoke exhaust efficiency and ensuring the rapid and safe evacuation of personnel.

[0038] Embodiment 3: Different from Embodiment 2, this embodiment uses the limit rod 15 to enable the second blocking plate 10 to be raised and lowered only on the limit rod 15 and the threaded rod 11. For details, refer to Figure 1 and Figure 7 As shown, a slider 19 is fixed to the left side of the two racks 6, and the slider 19 is slidably connected to the fixed plate 3, and the limiting rods 15 are fixed at equal intervals on the top and bottom of the connecting plate 2, and the outer side of the second blocking plate 10 is in a fitting and sliding connection with the inner wall of the first vent 7, and the second blocking plate 10 is sleeved on the outer side of the threaded rod 11 and the limiting rod 15, and the second blocking plate 10 is threadedly connected to the threaded rod 11, and the second blocking plate 10 is slidably connected to the limiting rod 15;

[0039] When the second sealing plate 10 moves on the threaded rod 11, the set limit rod 15 can be used to limit the second sealing plate 10 to prevent the second sealing plate 10 from rotating along with the rotation of the threaded rod 11. At the same time, when the movable gear 4 drives the two racks 6 to move, the set slider 19 is used to make the two racks 6 slide stably on the fixed plate 3.

[0040] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fireproof air duct with an internal support structure, comprising a fireproof air duct body (1), the left and right ends of the fireproof air duct body (1) are both fixed with connection plates (2), and the right side of the inside of the fireproof air duct body (1) is both bolted with a fixing plate (3); It is characterized in that Also includes: A rotating rod (5) is connected to the interior of the fixed plate (3) on the left side, and a movable gear (4) is fixedly mounted on the outer side of the rotating rod (5), and a rack (6) is symmetrically arranged about the center point of the rotating rod (5) inside the fireproof air duct body (1); The fireproof air duct body (1) is provided with first vents (7) on both left and right sides, and the fireproof air duct body (1) is provided with second vents (8) on both upper and lower sides, and the inner walls of the two second vents (8) are provided with second blocking plates (10); The inner walls of the two first vents (7) are each provided with a first blocking plate (9), a support block (17) is provided in the middle position inside the fireproof air duct body (1), and a connecting piece (18) is provided at an equal angle between the support block (17) and the fireproof air duct body (1); The connecting piece (18) extends into the interior of the supporting block (17) away from the inner wall of the fireproof air duct body (1), and a buffer spring (20) is installed between the end of the connecting piece (18) and the inner wall of the supporting block (17).

2. The fireproof air duct with an internal support structure according to claim 1, characterized in that: The support block (17) is arranged in a "cross" shape, the end of the connecting piece (18) away from the fireproof air duct body (1) is arranged in a "T" shape, and the connecting piece (18) forms an elastic telescopic structure through a buffer spring (20).

3. The fireproof air duct with an internal support structure according to claim 1, characterized in that: The movable gear (4) and the fixed plate (3) are rotatably connected, the outer side of the first sealing plate (9) and the inner wall of the first vent (7) are fitted and slidably connected, and one side of the first sealing plate (9) is fixedly connected to one end of the rack (6).

4. The fireproof air duct with an internal support structure according to claim 1, characterized in that: The fireproof duct body (1) is internally provided with threaded rods (11) symmetrically arranged about the center point of the movable gear (4) in the upper and lower parts, and the opposite ends of the two threaded rods (11) are connected to the outer side of the movable gear (4) through a bevel gear set (16), and a housing (13) is installed on the outer side of the bevel gear set (16). The movable gear (4) and the fireproof duct body (1) are connected through a traction rope (12), and one end of the traction rope (12) is wound around the shaft end of the movable gear (4), and the other end of the traction rope (12) is fixed to the bottom of the inner wall of the fireproof duct body (1).

5. The fireproof air duct with an internal support structure according to claim 4, characterized in that: A vortex spring (14) is installed at the connection position between the rotating rod (5) and the right fixed plate (3), and the threaded rod (11) and the left fixed plate (3) are rotationally connected.

6. The fireproof air duct with an internal support structure according to claim 1, characterized in that: A slider (19) is fixed on the left side of the two racks (6), and the slider (19) is slidably connected to the fixed plate (3). Limit rods (15) are fixed at equal intervals on the top and bottom of the connecting plate (2). The outer side of the second blocking plate (10) is slidably connected to the inner wall of the first vent (7), and the second blocking plate (10) is sleeved on the outer side of the threaded rod (11) and the limit rod (15).

7. The fireproof air duct with an internal support structure according to claim 1, characterized in that: The second blocking plate (10) and the threaded rod (11) are threadedly connected, and the second blocking plate (10) and the limiting rod (15) are slidably connected.

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