Aerial movable flue gas trapping device

Abstract

The utility model discloses an aerial mobile flue gas gathering device which comprises a mobile cross beam arranged at the top of a plant, a gathering cover and a dust removal purifier are arranged on the mobile cross beam, an exhaust pipe and an air supply pipe which extend in the longitudinal direction are arranged in the gathering cover, the exhaust pipe is located in the middle of the gathering cover, and the air supply pipe is located in the middle of the gathering cover. The air supply pipes are arranged on the two sides of the exhaust pipe, the exhaust pipe is provided with a main ventilation pipeline connected with the dust removal purifier and a circulating air pipe connected with each air supply pipe, and attached jet flow along the top wall of the trapping cover is formed between the air supply pipes and the exhaust pipe through air supply openings and exhaust openings which are correspondingly arranged. The device can be moved according to a pouring site, dust-containing flue gas can be efficiently captured and purified with low air volume, the dust-containing flue gas is effectively prevented from forming a smoke dust suspension zone at the top of a plant, the equipment investment cost and the operation cost are fundamentally reduced, and the requirement of green and low-carbon development is met.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature smoke capture, in particular to an aerial mobile smoke capture device. Background Art

[0002] With the upgrading of environmental protection, the natural ventilation of industrial plants that generate smoke and dust during production processes such as casting and welding is strictly restricted, and the requirements for unorganized emissions in workshops are becoming increasingly stringent. When the smoke and dust generated in the workshop cannot be discharged out of the workshop in time, a smoke and dust suspension belt will be formed in a certain height area, which will not only affect the workshop environment and cause harm to the occupational health of employees, but also affect the driver's observation of the environment, forming certain safety hazards. In order to avoid the above situation, a capture hood connected to a dust removal and purification system is usually set up in the workshop. The above-mentioned capture hood is located on the top of the plant. In order to achieve comprehensive ventilation and good exhaust gas purification effects, a large ventilation volume is required. Therefore, the initial investment of the equipment is high and the operating energy consumption is also high. Secondly, the pipes connected to the capture hood are laid on the top of the workshop, which will cause the structural load to exceed the limit, so the plant needs to be reinforced, which further increases the investment, and the reinforcement process will affect the normal production of the workshop. Summary of the invention

[0003] In order to solve the above problems, the utility model provides an aerial mobile smoke capture device, which can specifically adopt the following technical solutions:

[0004] The aerial mobile smoke capture device described in the utility model comprises a movable crossbeam arranged on the top of a factory building, a collection hood and a dust purifier are arranged on the movable crossbeam, an exhaust pipe and an air supply pipe extending longitudinally are arranged in the collection hood, the exhaust pipe is located in the middle of the collection hood, the air supply pipe is arranged on both sides of the exhaust pipe, the exhaust pipe is divided into a suction section located in the middle and circulation sections located at both ends by a partition, the suction section is provided with a main ventilation duct connected to the dust purifier, the circulation section is provided with a circulation air duct corresponding to the single-sided supply air pipe respectively, and an attached jet along the top wall of the collection hood is formed between the supply air pipe and the exhaust pipe through the correspondingly arranged air supply port and exhaust port.

[0005] The columns on both sides of the factory building are provided with longitudinal guide rails, and the longitudinal guide rails are slidably connected with the movable cross beams.

[0006] The collecting hood is arranged below the moving beam, and the dust removal purifier is arranged above the moving beam; when the moving beam is less than 15 meters, there is one collecting hood; when the moving beam is greater than 15 meters, two collecting hoods are arranged side by side.

[0007] A centrifugal fan is arranged on the exhaust pipe of the dust removal purifier, and a spiral ash discharger is arranged at the ash discharge port of the dust removal purifier.

[0008] A telescopic ash conveying pipe is arranged at the outlet of the spiral ash discharger, and the end of the telescopic ash conveying pipe is movably connected to the vertical ash conveying pipe by magnetic attraction, and the vertical ash conveying pipe is connected to the ash hopper arranged on the ground through the inclined ash conveying pipe.

[0009] The exhaust pipe is arranged along the top central axis of the collecting hood, and the air supply pipe is symmetrically arranged on both sides of the top of the collecting hood.

[0010] The main ventilation duct is arranged in the middle of the air supply duct, and the circulating air ducts are parallel to each other and are respectively arranged at both ends of the air exhaust duct.

[0011] The main bodies of the main ventilation duct and the circulating air duct are both located outside the collecting hood, and each circulating air duct is provided with a circulating fan.

[0012] The air supply ports of the air supply pipe are evenly spaced in the longitudinal direction and are arranged on the side opposite to the exhaust pipe; the cross section of the exhaust pipe is an inverted triangle structure, and the air exhaust ports are arranged on both side surfaces of the exhaust pipe and are symmetrically distributed along the central axis of the exhaust pipe.

[0013] When working, move the hood to the top of the working position (including but not limited to casting, welding, steel / non-ferrous metal smelting and other scenes), start the circulating fan and dust purifier, let the dusty flue gas enter the hood, and form an attached jet along the top wall of the hood between the supply air duct and the exhaust duct. The attached jet sucks the dusty flue gas to promote the capture of the dusty flue gas by the hood. Part of the dusty flue gas entering the exhaust duct returns to the hood through the circulating air duct and the supply air duct, and the other part enters the dust purifier through the main ventilation duct, and meets the emission standards after purification.

[0014] The aerial mobile smoke capture device provided by the utility model has a simple structure, is easy to use, and has a high degree of automation. The capture hood can be moved according to the casting location, thereby improving the targeted smoke capture, effectively preventing the dust-containing smoke from forming a smoke suspension belt on the top of the factory building, and reducing the adverse impact on the environment; secondly, because the capture hood is designed with a smoke capture structure that can form an attached jet, the dust-containing smoke can be captured and purified with low air volume and high efficiency, which fundamentally reduces the equipment investment cost and operating cost, and meets the requirements of green and low-carbon development. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure of a single capture hood.

[0017] Figure 3 yes Figure 1 Schematic diagram of the connection structure between a single ash hopper and a spiral ash discharger.

[0018] Figure 4 This is a simulation diagram of the capture effect of a single capture hood. DETAILED DESCRIPTION

[0019] The following is a detailed description of an embodiment of the utility model in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific working process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0020] like Figure 1-3 As shown, the aerial mobile fume capture device described in the utility model is provided by installing longitudinal guide rails 11 above the columns on both sides of the plant, and installing a movable crossbeam 12 on the longitudinal guide rails 11, and installing a capture hood 1 on the movable crossbeam 12 that can change its position with the work location. The capture hood 1 can accurately capture dusty fume, so compared with the traditional capture hood, it is compact and saves materials, and avoids the disadvantage of excessive pressure on the beam and column structure of the plant, which leads to safety hazards.

[0021] Normally, the capture hood 1 is arranged below the moving crossbeam 12, and a dust purifier 2 is arranged above the moving crossbeam 12 to process the dusty flue gas entering the capture hood 1. Generally, when the moving crossbeam 12 is less than 15 meters (i.e., the factory building is narrow), a single capture hood 1 can be arranged; when the moving crossbeam is greater than 15 meters (i.e., the factory building is wide), in order to ensure the flue gas capture effect, the capture hood 2 can be arranged in parallel in two ways as in this embodiment.

[0022] Each of the above-mentioned collecting hoods 1 is provided with an exhaust duct 11 and two air supply ducts 12, all of which extend in the longitudinal direction, and the exhaust duct 11 is provided along the top central axis of the collecting hood 1, and the air supply duct 12 is symmetrically provided on both sides of the top of the collecting hood 1. The exhaust duct 11 is divided into a suction section located in the middle and a circulation section located at both ends by a partition M, wherein a main ventilation duct 13 connected to the dust collector 2 is provided on the suction section, and a circulation duct 14 is provided on each circulation section, and each circulation duct 14 is individually connected to a corresponding air supply duct 12 (for example, the circulation section at the front end is provided with a circulation duct 14 connected to the left air supply duct 12, and the circulation section at the rear end is provided with a circulation duct 14 connected to the right air supply duct 12). The above-mentioned two circulation ducts 14 are parallel to each other, and are respectively installed with a circulation fan 15. The main bodies of the above-mentioned main ventilation duct 13 and the circulation duct 14, as well as the circulation fan 15 are all located outside the collecting hood 1.

[0023] The air supply ports of the air supply pipe 12 are evenly spaced in the longitudinal direction and are arranged on the side opposite to the exhaust pipe 11; the cross section of the exhaust pipe 11 is an inverted triangle structure, and the exhaust ports are arranged on both sides of the exhaust pipe 11, corresponding to the air supply ports of the air supply pipe 12, and the exhaust ports on both sides are symmetrically distributed along the central axis of the exhaust pipe 11. When the circulating fan 15 is turned on, the dusty flue gas enters the exhaust pipe 11, the circulating air pipe 14 and the air supply pipe 12 in turn, is blown out from the air supply port of the air supply pipe 12, and flows to the exhaust port of the exhaust pipe 11, forming an attached jet along the top wall of the capture hood 1. The attached jet can entrain most of the dusty flue gas entering the capture hood 1, thereby improving the capture effect.

[0024] A centrifugal fan 21 is installed on the exhaust pipe of the above-mentioned dust purifier 2 to provide suction power so that the dust-containing flue gas entering the collection hood 1 enters the dust purifier 2 through the exhaust pipe 11, so as to meet the discharge standards. In addition, the slag ash generated by the dust purifier 2 is processed by the spiral ash unloader 3 located at the ash discharge port of the dust purifier 2. Usually, a spiral ash unloader 3 is provided at the ash discharge port of each dust purifier 2, and accordingly, an ash hopper 4 is provided on the ground, and the two are connected by an ash conveying pipe. Specifically, a telescopic ash conveying pipe 31 with a magnetic suction component is installed at the outlet of the spiral ash unloader 3, a section of inclined ash conveying pipe 41 is provided at the top of the ash hopper 4, and a section of vertical ash conveying pipe 42 is connected to the top of the inclined ash conveying pipe 41 (to facilitate the connection of the telescopic ash conveying pipe 31 and speed up the ash unloading speed); when ash unloading is required, the movable crossbeam 12 is moved to the vicinity of the ash hopper 4, and the telescopic ash conveying pipe 31 is connected to the vertical ash conveying pipe 42.

[0025] During operation, the collection hood 1 moves to the top of the working position as required, and the dusty smoke enters the collection hood 1, reaches the air supply pipe 12 through the circulating air duct 14, and is blown out from the air supply port to form an attached jet that blows along the top wall of the collection hood toward the exhaust pipe. The attached jet draws most of the dusty smoke into the exhaust pipe 11, forming a negative pressure near the hood opening, thereby improving the collection effect of the collection hood 1. A part of the dusty smoke that enters the exhaust pipe 11 returns to the collection hood 1 again through the circulating air duct 14 and the air supply pipe 12, and the other part enters the dust purifier 2 through the main ventilation duct 13, and is discharged after purification treatment. When the slag ash obtained during the purification process accumulates to a certain amount, the collection hood 1 is moved to the ash unloading location, and the spiral ash unloader 3 and the ash hopper 4 are connected for automatic ash unloading.

[0026] When the collection hood 1 is located 5m above the working position, the supply air speed is adjusted to 1m / s and the exhaust air speed is adjusted to 1.89m / s. The collection effect of a single collection hood is as follows: Figure 4 Compared with the traditional smoke capture method, the aerial mobile smoke capture device described in the utility model can better capture dusty smoke, effectively prevent the dusty smoke from forming a smoke suspension belt on the top of the factory building, and reduce the adverse impact on the environment.

[0027] It should be noted that, in the description of the present invention, terms indicating orientation or positional relationships, such as "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

Claims

1. An aerial mobile smoke capture device, characterized in that: It comprises a movable crossbeam arranged on the top of a factory building, on which a collecting hood and a dust purifier are arranged, an exhaust pipe and an air supply pipe extending in the longitudinal direction are arranged in the collecting hood, the exhaust pipe is located in the middle of the collecting hood, the air supply pipe is arranged on both sides of the exhaust pipe, the exhaust pipe is divided into a suction section located in the middle and circulation sections located at both ends by a partition, the suction section is provided with a main ventilation duct connected with the dust purifier, the circulation section is provided with a circulation air duct corresponding to the single-sided air supply pipe respectively, and an attached jet along the top wall of the collecting hood is formed between the air supply pipe and the exhaust pipe through the correspondingly arranged air supply ports and exhaust ports.

2. The aerial mobile smoke capture device according to claim 1 is characterized in that: The columns on both sides of the factory building are provided with longitudinal guide rails, and the longitudinal guide rails are slidably connected with the movable cross beams.

3. The aerial mobile smoke capture device according to claim 1 is characterized in that: The collecting hood is arranged below the moving beam, and the dust removal purifier is arranged above the moving beam; and when the moving beam is less than 15 meters, there is one collecting hood; when the moving beam is greater than 15 meters, two collecting hoods are arranged side by side.

4. The aerial mobile smoke capture device according to claim 1 is characterized in that: A centrifugal fan is arranged on the exhaust pipe of the dust removal purifier, and a spiral ash discharger is arranged at the ash discharge port of the dust removal purifier.

5. The aerial mobile smoke capture device according to claim 4 is characterized in that: A telescopic ash conveying pipe is arranged at the outlet of the spiral ash discharger, and the end of the telescopic ash conveying pipe is movably connected to the vertical ash conveying pipe by magnetic attraction, and the vertical ash conveying pipe is connected to the ash hopper arranged on the ground through the inclined ash conveying pipe.

6. The aerial mobile smoke capture device according to claim 1 is characterized in that: The exhaust pipe is arranged along the top central axis of the collecting hood, and the air supply pipe is symmetrically arranged on both sides of the top of the collecting hood.

7. The aerial mobile smoke capture device according to claim 6 is characterized in that: The main ventilation duct is arranged in the middle of the air supply duct, and the circulating air ducts are parallel to each other and are respectively arranged at both ends of the air exhaust duct.

8. The aerial mobile smoke capture device according to claim 6 is characterized in that: The main bodies of the main ventilation duct and the circulating air duct are both located outside the collecting hood, and each circulating air duct is provided with a circulating fan.

9. The aerial mobile smoke capture device according to claim 6, characterized in that: The air supply ports of the air supply pipe are evenly spaced in the longitudinal direction and are arranged on the side opposite to the exhaust pipe; the cross section of the exhaust pipe is an inverted triangle structure, and the air exhaust ports are arranged on both side surfaces of the exhaust pipe and are symmetrically distributed along the central axis of the exhaust pipe.

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