A protective cover for air duct

Abstract

The utility model relates to an air duct protective cover, comprising a fixed disk and a protective plate, a through hole is provided in the middle of the fixed disk, a vent is provided in the middle of the protective plate, a plurality of baffles are arranged in an array at the vent, a first spring is connected between the protective plate and the fixed disk, the protective plate is connected to the fixed disk by bolts, the fixed disk is connected to a fixing assembly, the fixing assembly comprises a first clip and a second clip which are mutually clamped on the outer wall of the air duct body, the protective plate is connected to the air duct body by the fixed disk, that is, the air duct body is inserted into the through hole on the fixed disk, the air duct body is fixed by the first clip and the second clip, under the action of the first spring, the vent of the protective plate is aligned with the pipe opening of the air duct body, the protective plate is fixed on the fixed disk by bolts, thereby realizing the connection between the protective plate and the air duct body, therefore, the utility model does not need to weld the protective plate and the air duct body, thus avoiding damage to the air duct during welding, and is convenient for disassembling and replacing the protective plate.

Description

Technical Field

[0001] The utility model relates to the technical field of air duct protective covers, in particular to an air duct protective cover. Background Art

[0002] Air duct is an important equipment in buildings, mainly used for conveying fresh air and exhaust air, and is the core component of the building ventilation system. In the fire smoke exhaust air duct industry, the air duct plays a role of fire barrier inside the building, which can protect the lives of people by blocking the spread of flames and smoke.

[0003] Air ducts usually need to be installed with protective covers when in use; common air duct protective covers are welded to the air ducts, which can easily cause damage to the air ducts during welding, and are inconvenient to disassemble and replace after welding. Utility Model Content

[0004] The purpose of the utility model is to design an air duct protective cover to solve the technical problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a duct protective cover, comprising a fixed plate and a protective plate, a through hole is provided in the middle of the fixed plate, a vent is provided in the middle of the protective plate, a plurality of baffles are arrayed at the vent, a first spring is connected between the protective plate and the fixed plate, the protective plate is connected to the fixed plate by bolts, the fixed plate is connected to a fixing assembly, and the fixing assembly comprises a first clip and a second clip clamped to each other on the outer wall of the duct body.

[0006] Furthermore, the protective plate is connected with a butt joint pipe adapted to the air duct body, and the butt joint pipe is gap-matched with the inner wall of the fixing plate.

[0007] Furthermore, one end of the first clip is hinged to the second clip, and the other end of the first clip is elastically connected to the second clip.

[0008] Furthermore, the second clip is connected to a slide rod, a locking handle is provided at the end of the slide rod, a protrusion cooperating with the locking handle is provided on the outer wall of the slide rod, and a second spring is connected to the bottom of the protrusion.

[0009] Furthermore, the locking handle is rotatably connected to the sliding rod via a rotating shaft, and the locking handle is provided with an eccentric hole adapted to the rotating shaft.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model connects the protective plate to the air duct body through a fixing plate, that is, the air duct body is inserted into the through hole on the fixing plate, and the air duct body is fixed by the first clip and the second clip. Under the action of the first spring, the ventilation hole of the protective plate is aligned with the pipe opening of the air duct body, and the protective plate is fixed on the fixing plate by bolts, thereby realizing the connection between the protective plate and the air duct body. Therefore, the utility model does not need to weld the protective plate and the air duct body, avoids damage to the air duct during welding, and facilitates the disassembly and replacement of the protective plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a cross-sectional view of the utility model;

[0013] The names of the components marked in the figure are as follows: 1. Fixed plate; 2. Protective plate; 3. Bump; 4. First spring; 5. Bolt; 6. Fixed assembly; 601. First clip; 602. Second clip; 7. Butt tube; 8. Sliding rod; 9. Locking handle; 10. Bump; 11. Second spring; 12. Rotating shaft; 13. Duct body. DETAILED DESCRIPTION

[0014] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0015] Example: Please refer to Figure 1-2A duct protection cover comprises a fixing plate 1 and a protection plate 2, wherein the fixing plate 1 is used to connect the protection plate 2 and the duct body 13, and specifically, a through hole is provided in the middle of the fixing plate 1, and the size of the through hole is larger than the size of the duct body 13, so that the duct can be inserted into the through hole; the fixing plate 1 is connected with a fixing assembly 6, and the fixing assembly 6 comprises a first clip 601 and a second clip 602 which are mutually clamped on the outer wall of the duct body 13, and the duct body 13 is fixed to the fixing plate 1 by the first clip 601 and the second clip 602, and in order to facilitate the rapid fixing of the duct body 13, preferably, one end of the first clip 601 is hinged to the second clip 602, and the other end of the first clip 601 is elastically connected to the second clip 602 The second clamp 602 is connected to the air duct body 13, and the space between the first clamp 601 and the second clamp 602 can be freely adjusted under the action of elasticity. Therefore, the air duct body 13 can be quickly inserted without disassembling the first clamp 601 and the second clamp 602. Specifically, the second clamp 602 is connected to the slide bar 8, and the end of the slide bar 8 is provided with a locking handle 9. The outer wall of the slide bar 8 is provided with a protrusion 10 that cooperates with the locking handle 9, and the protrusion 10 is slidably connected to the slide bar 8. The bottom end of the protrusion 10 is in contact with the top end of the first clamp 601. The bottom of the protrusion 10 is connected to the second spring 11, and the bottom end of the second spring 11 is provided with a gasket, so that the spring force is balanced, and the movement of the protrusion 10 is adjusted by the locking handle 9, so that the second spring The spring 11 is deformed as the protrusion 10 moves; preferably, the locking handle 9 is rotatably connected to the sliding rod 8 through the rotating shaft 12, and the locking handle 9 is provided with an eccentric hole adapted to the rotating shaft 12. When the locking handle 9 is rotated inward, under the action of the eccentric hole and the rotating shaft 12, the force of the outer wall of the locking handle 9 causes the protrusion 10 to move downward, and the protrusion 10 pushes the first clamping piece 601 downward, and at the same time compresses the second spring 11 downward, and the first clamping piece 601 moves downward, thereby clamping and fixing the air duct body 13; when the locking handle 9 is rotated outward, under the action of the spring, the protrusion 10 moves upward, thereby loosening the air duct body 13; thereby realizing the rapid disassembly of the air duct body 13; a vent is provided in the middle of the protective plate 2, There are multiple bar arrays 3 at the vents, which are tilted downward to prevent rainwater from entering the interior of the duct body 13 when used outdoors; a first spring 4 is connected between the protective plate 2 and the fixed disk 1, and multiple first springs 4 are provided. The fixed disk 1 is provided with slots corresponding to the first springs 4 one by one. The first springs 4 can be completely retracted in the slots and are arranged along the circumference of the protective plate 2, so that the protective plate 2 is evenly stressed. Under the action of the first springs 4, the protective plate 2 is more firmly connected to the fixed disk 1. The protective plate 2 is connected to the fixed disk 1 by bolts 5. After the bolts 5 are screwed into the fixed disk 1 and locked, the end face of the protective plate 2 fits with the end face of the fixed disk 1, thereby realizing the quick connection of the protective plate 2 and the duct body 13;The protective plate 2 is connected with a butt joint pipe 7 adapted to the air duct body 13, the butt joint pipe 7 is matched with the inner wall gap of the fixing plate 1, and the port of the butt joint pipe 7 is fitted with the pipe opening of the air duct body 13, and the sealing effect between the protective plate 2 and the air duct body 13 is improved by the butt joint pipe 7. ;

[0016] The working principle of this embodiment: when in use, the locking knob is rotated outward to expand the space between the first clip 601 and the second clip 602, and then the air duct body 13 is inserted into the through hole on the fixed plate 1 from between the first clip 601 and the second clip 602, and the locking knob is rotated inward to clamp the air duct body 13, thereby achieving the fixation of the air duct body 13 and the fixed plate 1, and the bolt 5 is screwed into the fixed plate 1, and the butt tube 7 is fitted with the air duct body 13, thereby achieving the quick connection of the air duct body 13 and the protective plate 2. Therefore, the utility model does not need to weld the protective plate 2 and the air duct body 13, avoids damage to the air duct during welding, and facilitates the disassembly and replacement of the protective plate 2.

[0017] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A duct protection cover, characterized in that: The invention comprises a fixed plate (1) and a protective plate (2), wherein a through hole is provided in the middle of the fixed plate (1), a vent is provided in the middle of the protective plate (2), a plurality of retaining bars (3) are arranged in an array at the vent, a first spring (4) is connected between the protective plate (2) and the fixed plate (1), the protective plate (2) is connected to the fixed plate (1) via bolts (5), the fixed plate (1) is connected to a fixing assembly (6), and the fixing assembly (6) comprises a first clamp (601) and a second clamp (602) which are mutually clamped on the outer wall of the air duct body (13).

2. The air duct protective cover according to claim 1, characterized in that: The protective plate (2) is connected to a butt joint pipe (7) adapted to the air duct body (13), and the butt joint pipe (7) is gap-matched with the inner wall of the fixing plate (1).

3. The air duct protective cover according to claim 1, characterized in that: One end of the first clip (601) is hinged to the second clip (602), and the other end of the first clip (601) is elastically connected to the second clip (602).

4. The air duct protective cover according to claim 3, characterized in that: The second clamp (602) is connected to a slide rod (8), a locking handle (9) is provided at the end of the slide rod (8), a protrusion (10) cooperating with the locking handle (9) is provided on the outer wall of the slide rod (8), and a second spring (11) is connected to the bottom of the protrusion (10).

5. The air duct protective cover according to claim 4, characterized in that: The locking handle (9) is rotatably connected to the slide rod (8) via a rotating shaft (12), and an eccentric hole adapted to the rotating shaft (12) is provided on the locking handle (9).

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