Flow channel accelerating device of fireproof air pipe

Abstract

The utility model relates to a flow channel accelerating device of a fireproof air pipe. Comprising a pipeline body and a regulation and control assembly, a flow channel cavity is formed in the pipeline body, the regulation and control assembly comprises a shielding component and a pulling handle, the upper end of the shielding component is rotatably connected to the top wall of the flow channel cavity, the lower end of the shielding component is rotatably connected to the upper end of the pulling handle, and the pulling handle downwards penetrates out of the pipeline body from the interior of the flow channel cavity; the shielding component is driven by the pulling handle to rotate downwards and abut against the bottom wall of the flow channel cavity. The regulation and control assembly is arranged in the pipeline body, the regulation and control assembly is pulled by the pulling handle to rotate downwards, the circulation section in the pipeline body is reduced, the air speed can be increased by reducing the circulation section under the condition that the air pressure is constant, and sundries behind the pipeline body are blown away through accelerated air; and the air exhaust effect of the air exhaust pipe is prevented from being influenced by more accumulated sundries.

Description

Technical Field

[0001] The utility model belongs to the technical field of fireproof air ducts, and in particular relates to a flow channel acceleration device for fireproof air ducts. Background Art

[0002] At present, in large shopping malls, large production workshops or parking lots, in order to achieve ventilation effects, exhaust ducts are generally installed to extract and replace the air in the internal environment to ensure that the air inside is always fresh. Even in the event of a fire, the fire-proof structure of the exhaust duct itself can not only discharge the smoke generated by the fire in time, but also prevent such exhaust ducts from losing the function of discharging smoke due to fire. Therefore, the fire resistance and emission performance of the exhaust duct play a key role in whether it can work normally. However, since fire itself is a low-probability event, exhaust ducts are more used for exhaust. However, when working for a long time, a lot of debris and garbage may accumulate in the exhaust duct, especially in T-shaped pipes or bends, which are particularly prone to debris deposition. The exhaust ducts in large spaces are long and numerous, and fixed-point cleaning requires disassembly of the exhaust duct, which is time-consuming and troublesome. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a flow acceleration device for a fireproof air duct. A regulating component is set in the duct body. The handle is pulled to rotate the regulating component downward, thereby reducing the flow cross-section in the duct body. When the air pressure is constant, reducing the flow cross-section can increase the wind speed. The accelerated wind blows away the debris behind the duct body, avoiding the exhaust effect of the exhaust duct being affected by the accumulation of debris.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A flow acceleration device for a fireproof air duct includes a duct body and a regulating component, wherein a flow cavity is provided in the duct body, and the regulating component includes a shielding member and a pulling handle, wherein the upper end of the shielding member is rotatably connected to the top wall of the flow cavity, and the lower end of the shielding member is rotatably connected to the upper end of the pulling handle, and the pulling handle passes downward through the duct body from the flow cavity, and the shielding member rotates downward under the drive of the pulling handle and abuts against the bottom wall of the flow cavity.

[0006] The shielding component includes a rotating seat, a rotating plate and an extension plate. The rotating seat is detachably connected to the top wall of the flow channel cavity. The upper end of the rotating plate is rotatably connected to the rotating seat. The extension plate is provided with a movable cavity. The lower end of the rotating plate is fitted and connected to the movable cavity.

[0007] The pulling handle is formed into a U-shaped structure by connecting two groups of side handles and a bottom handle. Both groups of side handles are provided with through holes. The side walls at both ends of the bottom of the extension plate are provided with rotating columns, and the rotating columns are connected with the through holes; the side walls at both ends of the flow channel cavity are provided with limiting grooves, and the limiting grooves are matched with the side handles; a handle is fixedly connected to the lower end surface of the bottom handle.

[0008] The flow channel acceleration device of the fireproof air duct of this structure is used. In the T-shaped pipe or the bend pipe, since the wind speed flowing inside and outside the bend of these pipes is different, the debris or garbage sucked into the fireproof air duct will accumulate at this position after long-term work, affecting the exhaust effect. Therefore, the pipe body is connected before the T-shaped pipe or the bend pipe. If the flow cross-section of the flow channel cavity in the pipe body can be changed, the wind speed can be accelerated instantly when the air pressure of the inhaled air is constant. The accelerated wind can instantly generate instantaneous pressure on the debris or garbage at the bend and blow it away. In order to achieve the change of the flow cross-section of the flow channel cavity, a regulating device is set in the flow channel cavity. The assembly comprises a shielding component including a rotating seat, a rotating plate and an extension plate. The rotating seat is fixed to the top wall of the flow channel cavity by screws, and the upper end of the rotating plate is engaged with the rotating seat through an axis connection. The rotating plate rotates with the rotating seat as the rotation center, and the lower end of the rotating plate is inserted into the movable cavity of the extension plate. The extension plate can be telescoped and extended on the movable plate. Rotating columns are provided on the side walls at both ends of the bottom of the extension plate, and limiting grooves are provided on the side walls at both ends of the flow channel cavity. The limiting grooves extend downward and pass through the pipeline body. The two sets of side handles of the U-shaped pulling handle are inserted into the limiting grooves from the outside of the pipeline body, and the through holes on the side handles cooperate with the rotating columns, so that the pulling handle can only move up and down in the limiting grooves.

[0009] When the pull handle moves upward, it will drive the rotating column to move upward. At this time, the extension plate will drive the rotating plate to rotate and move upward under the restriction of the rotating column and the rotating plate until the extension plate and the rotating plate are attached to the top wall of the flow channel cavity. At this time, the flow cross-section of the flow channel cavity is at its largest. A lock hole is provided on the bottom handle of the pull handle, and the lock hole cooperates with the lock hole on the outer wall of the pipeline body. The pull handle can be fixed to the pipeline body by passing a screw through the lock hole and screwing it into the lock hole. When it is necessary to reduce the flow cross-section of the flow channel cavity, the screw is unscrewed and the pull handle is pulled down to make the flow cross-section of the flow channel cavity smaller. The handle needs to be pulled downward, which drives the extension plate to move downward. Due to the downward movement of the extension plate and the movable plate, the flow cross-section of the flow channel cavity will be reduced, thereby accelerating the air in the flow channel cavity, and blowing away the garbage and debris behind the pipe main body. Since the wind pressure in the pipe main body that is in the exhaust state is very high, pulling the pulling handle downward requires manual operation. Therefore, a handle is provided on the lower end face of the bottom handle for pulling, or a cylinder can be directly added to the bottom handle and the pipe main body, which are pushed by the cylinder, so that more convenient and more precise operation can be performed.

[0010] When the pulling handle is pulled downward so that the bottom of the extension plate abuts against the bottom wall of the flow channel cavity, the pipeline body can be completely closed, which is suitable for use when the pipeline at this position needs to be closed.

[0011] Furthermore, a dust-blocking brush is provided on the side wall of the extension plate, and the end of the dust-blocking brush abuts against the side wall of the flow channel cavity.

[0012] Compared with the existing technology, the advantages of the present invention are: by pulling the pulling handle downward, the extension plate and the movable plate are linked to each other and rotate with the rotating seat as the rotation center, thereby changing the flow cross-section of the flow channel cavity, so that the air in the flow channel cavity is accelerated, and the garbage and debris behind the pipe body are blown away. The pulling handle can also be pulled down to the bottom so that the bottom of the extension plate abuts against the bottom wall of the flow channel cavity, which can completely close the pipe body. It is suitable for use when the pipe at this position needs to be closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the installation position of the utility model;

[0015] Figure 2 It is a three-dimensional diagram of the utility model;

[0016] Figure 3 It is a top view of the utility model;

[0017] Figure 4 For the utility model Figure 3 AA cross-sectional view and closed flow channel cavity state diagram;

[0018] Figure 5 This is a state diagram of the open flow channel cavity of the present invention;

[0019] Figure 6 This is a top-down exploded schematic diagram of the present invention;

[0020] Figure 7 This is a schematic diagram of an explosion viewed from above of the present invention.

[0021] Among them: 1. Pipe body; 11. Flow channel cavity; 111. Limiting groove; 2. Control assembly; 21. Shielding component; 211. Rotating seat; 212. Rotating plate; 213. Extension plate; 214. Movable cavity; 22. Pull handle; 221. Side handle; 222. Bottom handle; 223. Through hole; 224. Rotating column; 225. Handle. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0023] The specific implementation of the present invention will be described below with reference to the accompanying drawings:

[0024] like Figure 1-7 As shown, a flow acceleration device for a fireproof air duct includes a pipe body 1 and a regulating component 2, wherein a flow cavity 11 is provided in the pipe body 1, and the regulating component 2 includes a shielding member 21 and a pulling handle 22, the upper end of the shielding member 21 is rotatably connected to the top wall of the flow cavity 11, and the lower end of the shielding member 21 is rotatably connected to the upper end of the pulling handle 22, and the pulling handle 22 passes downward through the pipe body 1 from the flow cavity 11, and the shielding member 21 is driven by the pulling handle 22 to rotate downward and abut against the bottom wall of the flow cavity 11.

[0025] The shielding member 21 includes a rotating seat 211, a rotating plate 212 and an extension plate 213. The rotating seat 211 is detachably connected to the top wall of the flow channel cavity 11. The upper end of the rotating plate 212 is rotatably connected to the rotating seat 211. The extension plate 213 is provided with a movable cavity 214. The lower end of the rotating plate 212 is cooperatively connected to the movable cavity 214.

[0026] The pulling handle 22 is formed into a U-shaped structure by connecting two groups of side handles 221 and a bottom handle 222. Both groups of side handles 221 are provided with through holes 223. The side walls at both ends of the bottom of the extension plate 213 are provided with rotating columns 224, and the rotating columns 224 are connected with the through holes 223; the side walls at both ends of the flow channel cavity 11 are provided with limiting grooves 111, and the limiting grooves 111 are matched with the side handles 221; a handle 225 is fixedly connected to the lower end surface of the bottom handle 222.

[0027] Furthermore, a dust-blocking brush is provided on the side wall of the extension plate 213 , and the end of the dust-blocking brush abuts against the side wall of the flow channel cavity 11 .

[0028] Description of the working method of this utility model:

[0029] The flow channel acceleration device of the fireproof air duct of this structure is used. In the T-shaped pipe or the bend pipe, since the wind speed flowing inside and outside the bend of these pipes is different, debris or garbage sucked into the fireproof air duct will accumulate at this position after long-term operation, affecting the exhaust effect. Therefore, the pipe body 1 is connected before the T-shaped pipe or the bend pipe. If the flow cross-section of the flow channel cavity 11 in the pipe body 1 can be changed, the wind speed can be instantly accelerated under the condition that the air pressure of the inhaled air is constant. The accelerated wind can instantly generate instantaneous pressure on the debris or garbage at the bend and blow it away. In order to achieve the change of the flow cross-section of the flow channel cavity 11, a regulating component 2 is set in the flow channel cavity 11, and the shielding component 21 therein includes a rotating seat 211, a rotating plate 212 and an extension plate 213. The rotating seat 211 is fixed to the top wall of the flow channel cavity 11 by screws, and the upper end of the rotating plate 212 is engaged with the rotating seat 211 through an axis connection. The rotating plate 212 rotates with the rotating seat 211 as the rotation center, and the lower end of the rotating plate 212 is inserted into the movable cavity 214 on the extension plate 213. The extension plate 213 can be telescoped and extended on the movable plate. Rotating columns 224 are provided on the side walls at both ends of the bottom of the extension plate 213, and limiting grooves 111 are provided on the side walls at both ends of the flow channel cavity 11. The limiting grooves 111 extend downward and pass through the pipeline main body 1. The two groups of side handles 221 of the U-shaped pulling handle 22 are inserted into the limiting grooves 111 from the outside of the pipeline main body 1, and the through holes 223 on the side handles 221 cooperate with the rotating columns 224, so that the pulling handle 22 can only move up and down within the limiting grooves 111.

[0030] When the pull handle 22 moves upward, it will drive the rotating column 224 to move upward. At this time, the extension plate 213 will drive the rotating plate 212 to rotate and move upward under the restriction of the rotating column 224 and the rotating plate 212, until the extension plate 213 and the rotating plate 212 are attached to the top wall of the flow channel cavity 11. At this time, the flow cross-section of the flow channel cavity 11 is at its largest. The bottom handle 222 on the pull handle 22 is provided with a lock hole, which cooperates with the lock hole on the outer wall of the pipe body 1. The pull handle 22 can be fixed to the pipe body 1 by passing a screw through the lock hole and screwing it into the lock hole. When it is necessary to reduce the flow cross-section of the flow channel cavity 11, unscrew the screw and pull it down. Pulling the handle 22 causes the pulling handle 22 to move downward, driving the extension plate 213 to move downward as well. Due to the downward movement of the extension plate 213 and the movable plate, the flow cross-section of the flow channel cavity 11 will be reduced, thereby accelerating the air in the flow channel cavity 11, and blowing away the garbage and debris behind the pipe main body 1. Since the wind pressure in the pipe main body 1, which is in the exhaust state, is very high, pulling the pulling handle 22 downward requires manual operation. Therefore, a handle 225 is provided on the lower end face of the bottom handle 222 for pulling. Alternatively, a cylinder can be directly added to the bottom handle 222 and the pipe main body 1, and the cylinder can be used to push them, which can achieve more convenient and more precise operation.

[0031] When the pulling handle 22 is pulled downward so that the bottom of the extension plate 213 abuts against the bottom wall of the flow channel cavity 11, the pipe body 1 can be completely closed, which is suitable for use when the pipe at this position needs to be closed, especially when a dust-blocking brush is provided on the side wall of the extension plate 213. The end of the dust-blocking brush is abutted against the side wall of the flow channel cavity 11, which can effectively block garbage and debris flowing through the flow channel cavity 11.

[0032] The beneficial effect of the present invention is that by pulling the pulling handle 22 downward, the extension plate 213 and the movable plate are linked to each other and rotated with the rotating seat 211 as the rotation center, thereby changing the flow cross-section of the flow channel cavity 11, so that the air in the flow channel cavity 11 is accelerated, and the garbage and debris behind the pipe main body 1 are blown away. The pulling handle 22 can also be pulled down to the bottom so that the bottom of the extension plate 213 abuts against the bottom wall of the flow channel cavity 11, which can completely close the pipe main body 1. It is suitable for use when the pipe at this position needs to be closed.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flow channel acceleration device for a fireproof air duct, characterized by: It includes a pipeline main body and a regulating component, a flow channel cavity is provided in the pipeline main body, and the regulating component includes a shielding member and a pulling handle, the upper end of the shielding member can be rotatably connected to the top wall of the flow channel cavity, and the lower end of the shielding member can be rotatably connected to the upper end of the pulling handle, and the pulling handle passes downward through the pipeline main body from the flow channel cavity, and the shielding member rotates downward under the drive of the pulling handle and abuts against the bottom wall of the flow channel cavity.

2. The flow channel acceleration device for fireproof air duct according to claim 1, characterized in that: The shielding component includes a rotating seat, a rotating plate and an extension plate. The rotating seat is detachably connected to the top wall of the flow channel cavity. The upper end of the rotating plate is rotatably connected to the rotating seat. The extension plate is provided with a movable cavity. The lower end of the rotating plate is fitted and connected to the movable cavity.

3. The flow channel acceleration device for a fireproof air duct according to claim 2, characterized in that: The pulling handle is a U-shaped structure formed by connecting two groups of side handles and a bottom handle. Both groups of side handles are provided with through holes. The side walls at both ends of the bottom of the extension plate are provided with rotating columns, and the rotating columns are connected with the through holes.

4. The flow channel acceleration device for a fireproof air duct according to claim 3, characterized in that: Limiting grooves are provided on the side walls at both ends of the flow channel cavity, and the limiting grooves are matched with the side handles.

5. The flow channel acceleration device for a fireproof air duct according to claim 3, characterized in that: A handle is fixedly connected to the lower end surface of the bottom handle.

6. The flow channel acceleration device for a fireproof air duct according to claim 2, characterized in that: A dust-blocking brush is provided on the side wall of the extension plate, and the end of the dust-blocking brush abuts against the side wall of the flow channel cavity.

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