A fire-resistant air duct with a telescopic structure

Abstract

The utility model discloses a fire-resistant air duct with a telescopic structure, comprising an air duct main body, wherein a first connecting plate is fixed to the left side of the outside of the air duct main body. When the fire-resistant air duct with a telescopic structure is installed and used, the locking rod can be loosened outward from the inside of the inner hole at the two ends of the right side of the top and bottom of the air duct main body, respectively, and after the abutment plate is driven to separate from the bottom end of the inner groove, the movable inner tube can be unlocked inside the right side of the air duct main body, and then the movable inner tube can be telescopically pushed to the left or right inside the right side of the air duct main body, and after the installation length of the air duct main body and the movable inner tube is adjusted and determined, the locking rod is again tightened inward inside the inner hole, and the bottom end of the abutment plate is driven to abut against the inside of the inner groove, and the position between the air duct main body and the movable inner tube is auxiliary fixed, thereby solving the problem that it is inconvenient to telescopically adjust the installation and use length of the fire-resistant air duct.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-resistant air ducts, in particular to a fire-resistant air duct with a telescopic structure. Background Art

[0002] The air duct is a piping system used for air transportation and distribution. According to the cross-section, it can be divided into circular air ducts, rectangular air ducts, oblate air ducts and other types. The widely used, fire-resistant air ducts are made of some metal materials and have non-combustible and pressure-resistant properties.

[0003] However, in actual use, the production and use length of the refractory air duct is generally fixed. When installed inside a building, due to the complexity and diversity of the installation space inside the building, the installation length of the refractory air duct cannot be adjusted according to the installation space during the installation process, which is a disadvantage.

[0004] Now, a new type of fire-resistant air duct with a telescopic structure is proposed to solve the above-mentioned shortcomings. Utility Model Content

[0005] The utility model aims to provide a fire-resistant air duct with a telescopic structure to solve the problem in the above background technology that it is inconvenient to telescopically adjust the installation length of the fire-resistant air duct.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a fire-resistant air duct with a telescopic structure, comprising an air duct body, a first connecting plate fixed to the left side of the outside of the air duct body, a movable inner tube inserted into the inside of the right side of the air duct body, and a second connecting plate fixed to the right side of the outside of the movable inner tube, a first inner frame fixed to the left side of the inside of the air duct body, a second inner frame fixed to the right side of the inside of the movable inner tube, inner holes are respectively penetrated at both ends of the right side of the top and bottom of the air duct body, and locking rods are provided inside the inner holes, inner grooves are respectively provided at both ends of the top and bottom of the movable inner tube, a sealing gasket is fixed to the right side of the air duct body, the bottom end of the locking rod penetrates the interior of the first inner frame and is movably connected to a stop plate, and mounting holes are respectively penetrated at both ends of the top and bottom of one side of the first connecting plate and the second connecting plate.

[0007] Preferably, the locking rod is provided with an external thread on the outside, the inner hole is provided with an internal thread matching the external thread on the inside, and a plurality of groups of anti-slip teeth are fixed at equal intervals on the bottom end of the abutment plate.

[0008] Preferably, positioning sliders are transversely fixed at the middle positions of the top and bottom ends of the air duct body, and positioning grooves are transversely arranged inside the middle positions of the top and bottom ends of the movable inner tube.

[0009] Preferably, the inner grooves are symmetrically arranged about the horizontal center line of the movable inner tube.

[0010] Preferably, a metal mesh plate is provided on the right side of the second inner frame, and mounting bolts are respectively provided through the four corners on the right side of the metal mesh plate, and screw holes are respectively provided inside the four corners on the right side of the movable inner tube.

[0011] Preferably, the interior of the second inner frame is respectively connected with the interior of the movable inner tube and the air duct body.

[0012] Preferably, a mounting groove is provided inside the left side of the first inner frame, and an air filter is provided inside the mounting groove, and a through groove is provided inside the right side of the first inner frame, and the through groove is connected with the inside of the mounting groove.

[0013] Preferably, locking blocks are respectively provided at both ends of the left top and bottom of the first inner frame, and connecting bolts are provided inside the left side of the locking block, and connecting holes are respectively provided at both ends of the left top and bottom of the first inner frame.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the fire-resistant air duct with a telescopic structure not only realizes the convenience of telescopic adjustment of the installation and use length of the fire-resistant air duct, realizes the convenience of preventing small animals from entering the inside of the air duct when the air duct is in use, but also realizes the convenience of auxiliary purification and filtration of the circulating air inside the air duct;

[0015] (1) By providing an air duct body, a movable inner tube, an inner groove, a locking rod, an inner hole, a sealing gasket, a positioning slider and a positioning groove, when the fire-resistant air duct is installed and used, the locking rods provided can be loosened from the inside of the inner hole to the outside at the two ends of the top and bottom right sides of the air duct body respectively, and the movable inner tube can be unlocked inside the right side of the air duct body after the abutment plate is driven to separate from the bottom end of the inner groove. After that, the movable inner tube can be telescoped and pushed to the left or right inside the right side of the air duct body. After the installation length of the air duct body and the movable inner tube is adjusted and determined, the locking rod can be screwed inwards inside the inner hole again, and the bottom end of the abutment plate can be driven to abut against the inside of the inner groove, thereby auxiliary fixing the position between the air duct body and the movable inner tube, which is convenient for telescopic adjustment of the installation and use length of the fire-resistant air duct during the installation of the air duct;

[0016] (2) By providing a movable inner tube, a second inner frame, screw holes, a metal mesh plate and mounting bolts, when the fire-resistant air duct is in use, the metal mesh plate can be attached to the right side of the second inner frame on the right side of the movable inner tube, and then four sets of mounting bolts are used to penetrate the inside of the metal mesh plate at the four corners on the right side of the metal mesh plate and screw them into the screw holes accordingly, and then the metal mesh plate can be fixed on the right side of the second inner frame. The metal mesh plate can be used to assist in sealing the inside of the air duct when the air duct is in use, thereby reducing the entry of small external animals from the outdoor air duct into the indoor air duct, and facilitating the prevention of small animals and foreign objects from entering the inside of the air duct;

[0017] (3) By providing an air duct body, a first inner frame, an air filter, a mounting groove, a locking block, a through groove, a connecting bolt and a connecting hole, when the fire-resistant air duct is used, the air filter provided can be inserted into the mounting groove inside the left side of the air duct body, and then the movable locking blocks are respectively rotated inward at the top and bottom of the left side of the first inner frame, so that the air filter can be fixedly locked and installed inside the mounting groove. The air filter provided can assist in filtering and removing some dust particles in the air flowing through the air duct when the air duct is ventilated, thereby improving the air cleanliness inside the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the top view of the movable inner tube structure of the utility model;

[0020] Figure 3 It is a schematic diagram of a partial cross-section enlarged structure of a metal mesh plate of the utility model in a side view;

[0021] Figure 4 This is a schematic diagram of an enlarged partial cross-section of the air filter of the utility model;

[0022] Figure 5 For this utility model Figure 1 A in the figure is an enlarged structural diagram.

[0023] In the figure: 1. first connecting plate; 2. air duct body; 3. first inner frame; 4. movable inner tube; 5. inner groove; 6. locking rod; 7. inner hole; 8. sealing gasket; 9. second inner frame; 10. second connecting plate; 11. mounting hole; 12. abutment plate; 13. positioning slider; 14. positioning groove; 15. screw hole; 16. metal mesh plate; 17. mounting bolt; 18. air filter; 19. mounting groove; 20. locking block; 21. through groove; 22. connecting bolt; 23. connecting hole. DETAILED DESCRIPTION

[0024] 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.

[0025] Example 1: Please refer to Figure 1-5 A fire-resistant air duct with a telescopic structure comprises an air duct body 2, a first connecting plate 1 is fixed on the left side of the outside of the air duct body 2, a movable inner tube 4 is inserted into the inside of the right side of the air duct body 2, and a second connecting plate 10 is fixed on the right side of the outside of the movable inner tube 4, a first inner frame 3 is fixed on the left side of the inside of the air duct body 2, and a second inner frame 9 is fixed on the right side of the inside of the movable inner tube 4, inner holes 7 are respectively penetrated at both ends of the top and bottom right sides of the air duct body 2, and locking rods 6 are provided inside the inner holes 7, inner grooves 5 are respectively provided at both ends of the top and bottom of the movable inner tube 4, a sealing gasket 8 is fixed on the right side of the air duct body 2, the bottom end of the locking rod 6 penetrates the inside of the first inner frame 3 and is movably connected with a stop plate 12, and mounting holes 11 are respectively penetrated at both ends of the top and bottom of one side of the first connecting plate 1 and the second connecting plate 10;

[0026] The locking rod 6 is provided with an external thread on the outside, and the inner hole 7 is provided with an internal thread matching the external thread. A plurality of groups of anti-slip teeth are fixed at equal intervals on the bottom end of the abutment plate 12. Positioning sliders 13 are respectively fixed transversely at the middle positions of the top and bottom ends of the air duct body 2. Positioning grooves 14 are respectively transversely provided inside the middle positions of the top and bottom ends of the movable inner tube 4. The inner grooves 5 are symmetrically arranged about the horizontal center line of the movable inner tube 4.

[0027] Specifically, Figure 1 and Figure 2 As shown, the locking rod 6 set at the two ends of the right side of the top and bottom of the air duct body 2 can be loosened from the inside of the inner hole 7 to the outside, and after driving the abutment plate 12 to separate from the bottom end of the inner groove 5, the movable inner tube 4 can be unlocked inside the right side of the air duct body 2, and then the movable inner tube 4 can be telescoped and pushed to the left or right inside the right side of the air duct body 2. After adjusting and determining the installation length of the air duct body 2 and the movable inner tube 4, the locking rod 6 can be tightened inwardly inside the inner hole 7 again, and the bottom end of the abutment plate 12 can be driven to abut against the inside of the inner groove 5, thereby auxiliary fixing the position between the air duct body 2 and the movable inner tube 4.

[0028] Embodiment 2: A metal mesh plate 16 is provided on the right side of the second inner frame 9, and mounting bolts 17 are respectively provided through the four corners on the right side of the metal mesh plate 16, and screw holes 15 are respectively provided inside the four corners on the right side of the movable inner tube 4, and the interior of the second inner frame 9 is respectively connected with the interior of the movable inner tube 4 and the air duct body 2;

[0029] Specifically, Figure 1 and Figure 3 As shown, the metal mesh plate 16 can be attached to the right side of the second inner frame 9 on the right side of the movable inner tube 4, and then four sets of mounting bolts 17 are used to penetrate the inside of the metal mesh plate 16 at the four corners on the right side of the metal mesh plate 16 and screw them into the corresponding screw holes 15. Then, the metal mesh plate 16 can be fixedly installed on the right side of the second inner frame 9. The metal mesh plate 16 can be used to assist in sealing the inside of the air duct when the air duct is in use, thereby reducing the risk of small external animals entering the indoor air duct from the outdoor air duct.

[0030] Embodiment 3: A mounting groove 19 is provided inside the left side of the first inner frame 3, and an air filter 18 is provided inside the mounting groove 19, a through groove 21 is provided inside the right side of the first inner frame 3, and the through groove 21 is connected to the inside of the mounting groove 19, locking blocks 20 are provided at both ends of the top and bottom of the left side of the first inner frame 3, and a connecting bolt 22 is provided inside the left side of the locking block 20, and connecting holes 23 are provided at both ends of the top and bottom of the left side of the first inner frame 3;

[0031] Specifically, Figure 1 , Figure 4 and Figure 5 As shown, after the air filter 18 is inserted into the installation groove 19 inside the left side of the air duct body 2, the movable locking blocks 20 are then rotated inward at the top and bottom of the left side of the first inner frame 3 respectively, so that the air filter 18 can be fixedly locked and installed inside the installation groove 19. The air filter 18 can be used to assist in filtering and removing some dust particles in the air flowing through the inside of the air duct when the inside of the air duct is ventilated.

[0032] Working principle: When the utility model is in use, the locking rod 6 provided at the two ends of the top and bottom right sides of the air duct body 2 can be loosened from the inside of the inner hole 7 to the outside, and the bottom end of the abutment plate 12 can be driven to disengage from the bottom end of the inner groove 5, so that the movable inner tube 4 can be unlocked inside the right side of the air duct body 2, and then the movable inner tube 4 can be telescopically pushed to the left or right inside the right side of the air duct body 2. After the installation length of the air duct body 2 and the movable inner tube 4 is adjusted and determined, the locking rod 6 can be screwed inwards inside the inner hole 7 again, and the bottom end of the abutment plate 12 can be driven to abut against the inside of the inner groove 5, so as to assist in fixing the position between the air duct body 2 and the movable inner tube 4. At the same time, when the fire-resistant air duct is in use, the metal mesh plate 16 provided can be attached to the right side of the second inner frame 9 on the right side of the inside of the movable inner tube 4, and then the metal mesh plate 1 can be respectively fixed on the metal mesh plate 1 After four sets of mounting bolts 17 are used to penetrate the interior of the metal mesh plate 16 at the four right corners and are screwed into the screw holes 15 accordingly, the metal mesh plate 16 can be fixedly mounted on the right side of the second inner frame 9. By means of the metal mesh plate 16, the interior of the air duct can be assisted in sealing when the air duct is in use, so as to prevent small external animals from entering the indoor air duct from the outdoor air duct, and prevent small animals and foreign objects from entering the interior of the air duct. When the fire-resistant air duct is in use, the air filter 18 can be inserted into the mounting groove 19 inside the left side of the air duct body 2, and then the movable locking blocks 20 can be respectively rotated inward at the top and bottom of the left side of the first inner frame 3, so that the air filter 18 can be fixedly locked and mounted inside the mounting groove 19. By means of the air filter 18, some dust particles in the air flowing through the air duct can be assisted in filtering and removing when the air duct is ventilated.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A fire-resistant air duct with a telescopic structure, comprising an air duct body (2), characterized in that: A first connecting plate (1) is fixed to the left side of the outside of the air duct body (2), a movable inner tube (4) is inserted into the inside of the right side of the air duct body (2), and a second connecting plate (10) is fixed to the right side of the outside of the movable inner tube (4), a first inner frame (3) is fixed to the left side of the inside of the air duct body (2), and a second inner frame (9) is fixed to the right side of the inside of the movable inner tube (4), inner holes (7) are respectively provided at both ends of the right side of the top and bottom of the air duct body (2), and locking rods (6) are provided inside the inner holes (7), inner grooves (5) are respectively provided at both ends of the top and bottom of the movable inner tube (4), a sealing gasket (8) is fixed to the right side of the air duct body (2), the bottom end of the locking rod (6) passes through the inside of the first inner frame (3) and is movably connected to a stop plate (12), and mounting holes (11) are respectively provided at both ends of the top and bottom of one side of the first connecting plate (1) and the second connecting plate (10).

2. The fire-resistant air duct with a telescopic structure according to claim 1, characterized in that: The locking rod (6) is provided with an external thread on the outside, the inner hole (7) is provided with an internal thread matching the external thread on the inside, and a plurality of groups of anti-slip teeth are fixed at equal intervals on the bottom end of the abutment plate (12).

3. The fire-resistant air duct with a telescopic structure according to claim 1, characterized in that: Positioning slide blocks (13) are transversely fixed at the middle positions of the top and bottom ends of the air duct body (2), and positioning grooves (14) are transversely arranged at the middle positions of the top and bottom ends of the movable inner tube (4).

4. The fire-resistant air duct with a telescopic structure according to claim 1, characterized in that: The inner groove (5) is symmetrically arranged with respect to the horizontal center line of the movable inner tube (4).

5. The fire-resistant air duct with a telescopic structure according to claim 1, characterized in that: A metal mesh plate (16) is provided on the right side of the second inner frame (9), and mounting bolts (17) are respectively provided through the four corners on the right side of the metal mesh plate (16), and screw holes (15) are respectively provided inside the four corners on the right side of the movable inner tube (4).

6. The fire-resistant air duct with a telescopic structure according to claim 1, characterized in that: The interior of the second inner frame (9) is respectively connected to the interior of the movable inner tube (4) and the interior of the air duct body (2).

7. The fire-resistant air duct with a telescopic structure according to claim 1, characterized in that: A mounting groove (19) is provided inside the left side of the first inner frame (3), and an air filter (18) is provided inside the mounting groove (19); a through groove (21) is provided inside the right side of the first inner frame (3), and the through groove (21) is connected to the inside of the mounting groove (19).

8. The fire-resistant air duct with a telescopic structure according to claim 1, characterized in that: Locking blocks (20) are respectively provided at the top and bottom ends of the left side of the first inner frame (3), and a connecting bolt (22) is provided inside the left side of the locking block (20), and connecting holes (23) are respectively provided at the top and bottom ends of the left side of the first inner frame (3).

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