Movable dust collecting cover for aluminum ash rotary furnace

Abstract

The utility model discloses a movable dust collecting cover for an aluminum ash rotary furnace, which comprises a dust collecting cover cabinet body used for enclosing a smoke generating source in a cabinet-shaped space, an openable operation hole arranged on the front side of the dust collecting cover cabinet body is convenient to operate and overhaul and prevents smoke from escaping, and a ventilation opening is reserved on the rear side of the cabinet body to stabilize the air pressure in the cover. Two dust collecting pipes with different pipe diameters are connected to the upper portion of the dust collecting cover, shutter valves capable of being controlled to be opened and closed are arranged in the dust collecting pipes, pipelines are switched according to air volume changes, the cyclone dust collector is connected to the rear portions of the dust collecting pipes, and fine particulate matter in smoke is cooled in the cyclone dust collector. The rotary furnace dust hood has the advantages that the cabinet type structure of the dust hood effectively encloses a smoke source and prevents smoke from escaping, meanwhile, the movable design is convenient to replace or maintain, and the openable and closable operation hole in the cabinet body of the dust hood is convenient for constructors to operate or observe and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of industrial flue gas treatment, especially to a movable dust hood for an aluminum ash rotary furnace. BACKGROUND

[0002] Aluminum ash is a byproduct generated during the production process of the aluminum industry, and its treatment and utilization have been a challenge in the field of environmental engineering and resource recycling. Currently, the treatment of aluminum ash usually adopts the rotary kiln treatment method rotary furnace technology, which realizes the recovery of aluminum through high-temperature treatment. However, a large amount of high-temperature harmful flue gas is generated instantaneously when aluminum ash is added during the treatment process. The traditional rotary furnace treatment method usually uses an upward suction type dust hood, which is easily disturbed by air flow and the dust collection effect is easily affected. At the same time, it is difficult to respond quickly to the instantaneous change of flue gas volume, increasing energy consumption and operating cost. In addition, the high temperature characteristics of aluminum ash also put higher heat resistance requirements on the subsequent treatment equipment. SUMMARY

[0003] The utility model aims at solving the technical problems existing in the prior art and provides a movable dust hood for an aluminum ash rotary furnace.

[0004] To achieve the above-mentioned purpose, the utility model provides a technical scheme: a movable dust hood for an aluminum ash rotary furnace, which comprises a dust hood cabinet body. The dust hood cabinet body is in the form of a cabinet as a whole, used to enclose the flue gas source in the cabinet-like space inside the dust hood cabinet body. The dust hood cabinet body is connected with a dust hood at the top. The upper part of the dust hood is in the form of a table, and the upper part of the dust hood is connected with a dust pipe group through a flange. The dust pipe group comprises two dust pipes with different diameters, and a louver valve is arranged on the dust pipe for controlling opening and closing. A cyclone dust collector is connected behind the dust pipe, and a variable frequency fan is connected behind the cyclone dust collector for controlling the size of air volume according to the flue gas generation amount of the rotary furnace. The cyclone dust collector is beneficial to reducing the temperature of flue gas and pretreating fine particulate matter therein. The variable frequency fan changes the air volume according to the flue gas generation amount, saving energy consumption.

[0005] Preferably, when the variable frequency fan controls the change of air volume according to the flue gas generation amount of the rotary furnace, the opening and closing of the louver valve are controlled to switch the opening and closing of the dust pipes with different diameters to control the air speed in the dust hood.

[0006] Preferably, the front side of the dust collecting cover cabinet is provided with an openable operation hole for operation and maintenance, preventing the rotary furnace from being disturbed during operation and causing smoke to escape.

[0007] Preferably, the dust collecting cover and the dust collecting pipe are provided with heat-resistant gaskets for sealing.

[0008] Preferably, the dust collecting cover cabinet is provided with a roller sliding block double shaft guide rail, and the dust collecting cover cabinet is slidingly connected with the roller sliding block double shaft guide rail.

[0009] The utility model has the advantages of the following:

[0010] The utility model has the advantages of the following: BRIEF DESCRIPTION OF DRAWINGS

[0011] The accompanying drawings, which are included to provide a further understanding of the utility model, illustrate the utility model and together with the description serve to explain the utility model, but do not limit the utility model.

[0012] Figure 1 It is the whole structure schematic view of the utility model;

[0013] Figure 2 It is the main view of the whole dust collecting cover cabinet of the utility model;

[0014] Figure 3 It is the side view of the whole dust collecting cover cabinet of the utility model;

[0015] Figure 4 It is the structure schematic view of the dust collecting pipe of the utility model;

[0016] Figure 5 It is the schematic view of the roller sliding block double shaft guide rail of the utility model.

[0017] Reference Signs List:

[0018] 1, cabinet body; 2, openable and closable operation hole; 3, ventilation opening; 4, dust hood; 5, dust collecting pipe; 6, heat-resistant gasket; 7, louver valve; 8, cyclone dust collector; 9, variable frequency fan; 10, roller sliding block double shaft guide rail. DETAILED DESCRIPTION

[0019] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0020] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the present application.

[0021] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. is not included in the number, above, below, etc. is included in the number. If there is a description of the first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features.

[0022] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical scheme.

[0023] Reference Figures 1-5The utility model discloses a preferred embodiment, a movable dust hood for aluminum ash rotary furnace, including dust hood cabinet 1, the dust hood cabinet 1 whole cabinet type is presented, for the fume source is surrounded in the cabinet -like space in the dust hood cabinet 1, the dust hood cabinet 1 top is connected with dust hood 4, and the dust hood 4 upper portion is table type, and the dust hood 4 upper portion is connected with dust collection pipe group through flange, and dust collection pipe group includes two dust collection pipes 5 of different diameters, and the dust collection pipe 5 is provided with louvre valve 7 for controlling open and close, and the dust collection pipe 5 is connected with cyclone dust collector 8, and the fine particulate in the flue gas is cooled in cyclone dust collector 8, and is collected, recycles simultaneously because of gravity, and the cyclone dust collector 8 is connected with frequency conversion fan 9 for controlling the size of the air volume according to rotary furnace flue gas production.

[0024] Further, when the frequency conversion fan 9 controls the air volume according to the rotary furnace flue gas production, the air speed in the dust hood 4 is controlled by controlling the opening and closing of the louvre valve 7 to switch the opening and closing of the dust collection pipes 5 of different diameters.

[0025] In this embodiment, the front side of the dust hood cabinet 1 is provided with an openable and closable operation hole 2 for operation and maintenance, while preventing the rotary furnace from being disturbed during operation to prevent smoke dust from escaping from the operation hole. The rear side of the dust hood cabinet 1 is provided with a ventilation hole 3, and the dust hood cabinet 1 is movably connected to the rotary furnace below.

[0026] Specifically, the openable and closable operation hole 2 facilitates the operator to operate and maintain, while preventing the rotary furnace from being disturbed during operation to prevent smoke dust from escaping from the openable and closable operation hole 2. The setting of the rear ventilation hole 3 makes the control air speed of the cover opening of the dust hood 4 neither suck in the feeding material nor make the fine particles escape, which can reduce the power of the frequency conversion fan 9 and reduce energy consumption. Moreover, the dust hood cabinet 1 is movable as a whole and does not directly contact the rotary furnace, avoiding vibration or reciprocating motion to cause air leakage between the dust hood cabinet 1 and the rotary furnace.

[0027] In this embodiment, heat-resistant gaskets 6 are provided at the connection between the dust hood 4 and the dust collection pipe 5 for sealing, which not only facilitates disassembly and movement, but also improves the heat resistance and sealing performance of the utility model.

[0028] In this embodiment, the dust hood cabinet 1 is provided with a roller sliding block double-shaft guide rail 10 at the bottom, and the dust hood cabinet 1 is slidingly connected to the roller sliding block double-shaft guide rail 10. Positioning holes are evenly provided on the side surface of the roller sliding block double-shaft guide rail 10, and a spring-loaded latch is installed at the bottom of the dust hood cabinet 1 as a limiting device.

[0029] Specifically, the roller sliding block double-shaft guide rail 10 provides a stable path, so that the dust hood cabinet 1 can be easily moved to the desired position along this path, thereby improving the flexibility and efficiency of operation. The dust hood cabinet 1 can be easily moved away when not in use, or quickly moved aside when replacement or maintenance is needed.

[0030] The utility model discloses a working principle: smoke is discharged from rotary furnace mouth, because the temperature is high in rotary furnace, the whole smoke disperses upwards, and therefore sets up the dust collecting hood cabinet 1 above rotary furnace mouth. The dust collecting hood cabinet 1 bottom is provided with gyro wheel sliding block double axle guide rail 10, makes the dust collecting hood cabinet 1 be movable, and leaves the ventilation opening 3 behind the dust collecting hood cabinet 1, guarantees the air pressure stability of dust collecting hood cabinet 1. The rear side of dust collecting hood cabinet 1 leaves the ventilation opening 3, makes the control wind speed of the cover mouth of dust collecting hood 4 neither inhale the feeding nor makes fine particulate matter escape. Reduce the power of variable frequency fan 9, reduce energy consumption. And dust collecting hood cabinet 1 whole movable, does not directly contact with rotary furnace, avoids the vibration or reciprocating motion and makes dust collecting hood cabinet 1 and rotary furnace produce the air leakage phenomenon. The dust collecting pipe 5 of two pipe diameters is connected above dust collecting hood 4, sets up the louver valve 7 of controllable opening and closing in the dust collecting pipe 5, and finally fine particulate matter in the smoke enters cyclone dust collector 8 and is removed, recycles, the utility model discloses adopts variable frequency fan 9 as power source.

[0031] The utility model discloses a dust collecting hood cabinet 1 effectively surrounds the smoke source, prevents smoke to disperse, can open and shut operation hole 2 simultaneously for operator provides convenient operation and maintenance passage. And dust collecting hood cabinet 1 whole movable, does not directly contact with rotary furnace, avoided the air leakage problem because of the equipment vibration or motion, and the dust collecting hood 4 of top and dust collecting pipe 5 are connected through flange and heat -resistant gasket 6, not only convenient to detach and remove, also improved the heat resistance and sealing property of the utility model. The gyro wheel sliding block double axle guide rail 10 of dust collecting hood cabinet 1 bottom is convenient and fast to remove dust collecting hood 4 to the required place. The double pipeline design of dust collecting pipe 5 cooperates with louver valve 7 control, allows the system to switch flexibly according to the air volume demand, ensures the accurate control of wind speed. Cyclone dust collector 8 not only makes effective collection fine particulate matter, but also carries out the temperature reduction of smoke, and variable frequency fan 9 adjusts the air volume according to the smoke production, realizes energy -conserving and efficient processing.

[0032] Summarized above, the utility model not only improves the security of operation and the convenience of maintenance, also through its efficient and environmental protection characteristics, satisfies the demand of modern industrial production.

[0033] On the premise of not appearing conflict, the person skilled in the art can use the above additional technical features freely and additively.

[0034] The above only is the prior implementation mode of the utility model, and the technical scheme that only with the basically same means realizes the purpose of the utility model belongs to the protection scope of the utility model.

Claims

1. A mobile dust hood for an aluminum dross rotary kiln, characterized by: The dust collecting hood cabinet body is in a cabinet type as a whole, is used for enclosing the smoke source in a cabinet space, and is connected with a dust collecting hood at the top. The upper part of the dust collecting hood is in a table type, and is connected with a dust collecting pipe group through a flange. The dust collecting pipe group includes two dust collecting pipes with different diameters, and is provided with a louver valve for controlling opening and closing. The dust collecting pipe is connected with a cyclone dust collector, and the cyclone dust collector is connected with a variable frequency fan for controlling the size of the air volume according to the amount of the rotary furnace flue gas.

2. A mobile dust hood for a rotary furnace for aluminum dross according to claim 1, characterized in that: When the variable frequency fan controls the air volume according to the amount of the rotary furnace flue gas, the louver valve is controlled to switch the opening and closing of the dust collecting pipes with different diameters, so as to control the air speed in the dust collecting hood.

3. A mobile dust hood for a rotary furnace for aluminum dross according to claim 1, characterized in that: The front side of the dust collecting hood cabinet body is provided with an openable operation hole for operation and maintenance, and preventing the smoke dust from escaping when the rotary furnace is running.

4. A mobile dust hood for a rotary furnace for aluminum dross according to claim 1, characterized in that: The rear side of the dust collecting hood cabinet body is provided with a ventilation opening, and the dust collecting hood cabinet body is movably connected with the rotary furnace.

5. A mobile dust hood for a rotary furnace for aluminum dross according to claim 1, characterized in that: The connection between the dust collecting hood and the dust collecting pipe is provided with a heat-resistant gasket for sealing. The bottom of the dust collecting hood cabinet body is provided with a roller sliding block double shaft guide rail, and the dust collecting hood cabinet body is slidably connected with the roller sliding block double shaft guide rail. Positioning holes are evenly arranged on the side surface of the roller sliding block double shaft guide rail, and a spring-loaded bolt is installed on the bottom of the dust collecting hood cabinet body as a limiting device.

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