Aluminum bar furnace smoke exhaust device capable of being automatically adjusted

Abstract

The utility model provides an aluminum bar furnace smoke exhaust device capable of being automatically adjusted. The aluminum bar furnace smoke exhaust device comprises a shell; the filtering assembly is arranged on the inner side face of the shell, the filtering assembly comprises a sealing plate, and the sealing plate is arranged on the front face of the shell. According to the aluminum bar furnace smoke exhaust device capable of being automatically adjusted, the shell, the filtering assembly, the driving motor, the rotating shaft, the rotating plate, the cleaning brush and other structures are matched with one another, when the aluminum bar furnace smoke exhaust device is used, smoke in a combustion chamber of the furnace body enters the shell through the air inlet, is filtered by the filter screen and then makes contact with the heat exchange assembly for heat exchange, and when smoke exhaust is stopped, the smoke exhaust efficiency is improved. And the driving motor is automatically started to drive the cleaning brush to rotate to clean dust attached to the surface of the filter screen into the collecting frame, so that the dust can be effectively prevented from being accumulated on the outer side surface of the heat exchange assembly, the heat exchange efficiency is ensured to be stable, and the heating effect on gas in the gas pipe is improved.

Description

Technical Field

[0001] This utility model relates to the field of aluminum rod heating furnace technology, and in particular to an automatically adjustable aluminum rod furnace exhaust device. Background Technology

[0002] The multi-bar long bar hot shearing furnace is a type of aluminum bar heating furnace (aluminum bar furnace), which is a device used for heating and shearing aluminum bars during the aluminum extrusion process.

[0003] Multi-bar long bar hot shearing furnaces emit heated flue gas during operation, necessitating the use of a flue gas exhaust system. One existing technology provides an automatically adjustable, energy-saving flue gas exhaust system for aluminum bar furnaces. This system comprises an aluminum bar heating furnace, a control system, a centrifugal fan mounted on the furnace for supplying air and aiding combustion, an exhaust pipe at the top of the furnace, and a chimney connected to the exhaust pipe. An adjustable butterfly valve is installed on the exhaust pipe to regulate the exhaust volume. The adjustable butterfly valve and the centrifugal fan are connected to the control system. This invention overcomes the drawback of excessive heat loss within the furnace due to the chimney's draft effect when connected to a traditional aluminum bar heating furnace, thus effectively reducing the energy consumption of the aluminum bar furnace.

[0004] However, when the device is in use, the flue gas discharged from inside the furnace directly enters the heat exchange chamber, comes into contact with the air heat exchanger, and accumulates on the outer side of the air heat exchanger, which can easily reduce the effect of subsequent gas heating in the waste heat utilization pipeline.

[0005] Therefore, it is necessary to provide an automatically adjustable exhaust system for aluminum rod furnaces to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides an automatically adjustable exhaust device for aluminum rod furnaces, which solves the problem that dust accumulation on the outer surface of the air heat exchanger can easily reduce the effect of subsequent gas heating in the waste heat utilization pipeline.

[0007] To solve the above-mentioned technical problems, this utility model provides an automatically adjustable aluminum rod furnace exhaust device, comprising:

[0008] shell;

[0009] A filter assembly is disposed on the inner side of the housing. The filter assembly includes a sealing plate disposed on the front side of the housing. A partition is fixedly installed on the back side of the sealing plate. The partition is disposed on the inner side of the housing. A filter screen is fixedly installed inside the partition. A collection frame is fixedly installed on one side of the partition.

[0010] A drive motor is fixedly installed at one end of the housing. A rotating shaft is fixedly installed at the output end of the drive motor. A rotating plate is fixedly installed at one end of the rotating shaft. A cleaning brush is fixedly installed on one side of the rotating plate.

[0011] A butterfly valve is fixedly installed at the other end of the top of the housing, and a smoke exhaust pipe is fixedly installed on the top of the butterfly valve.

[0012] Preferably, a fan is fixedly installed at the other end of the top of the outer shell, an air pipe is fixedly installed at the output end of the fan, the middle part of the air pipe is located on the inner side of the outer shell, a heat exchange component is fixedly installed on the outer side of the air pipe, the heat exchange component is located on the outer side of the outer shell, and a burner is fixedly installed at one end of the air pipe.

[0013] Preferably, a furnace body is fixedly installed at the bottom of the outer shell, and an air inlet is provided at the bottom of the outer shell, which communicates with the interior of the furnace body.

[0014] Preferably, one end of the burner is fixedly installed inside one end of the furnace body.

[0015] Preferably, one side of the cleaning brush is attached to the side of the filter screen.

[0016] Preferably, the outer side of the partition is attached to the inner side of the outer shell, and the partition is disposed between the heat exchange assembly and the air inlet.

[0017] Preferably, thermal insulation cotton is fixedly installed inside the outer shell.

[0018] Compared with related technologies, the automatically adjustable exhaust device for aluminum rod furnaces provided by this utility model has the following advantages:

[0019] This utility model provides an automatically adjustable exhaust device for an aluminum rod furnace. The device comprises a shell, a filter assembly, a drive motor, a rotating shaft, a rotating plate, and a cleaning brush, all working together. During operation, flue gas from the furnace combustion chamber enters the shell through the inlet, is filtered by the filter screen, and then contacts the heat exchange assembly for heat exchange. When exhaust stops, the drive motor automatically starts, rotating the cleaning brush to sweep the dust adhering to the filter screen surface into the collection frame. This effectively prevents dust accumulation on the outer surface of the heat exchange assembly, ensuring stable heat exchange efficiency and thus improving the heating effect on the gas in the gas pipe. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of a first embodiment of an automatically adjustable aluminum rod furnace exhaust device provided by this utility model;

[0021] Figure 2 for Figure 1The diagram shows a cross-sectional view of the outer shell.

[0022] Figure 3 for Figure 2 The diagram shows a three-dimensional structure of the filter assembly.

[0023] Figure 4 for Figure 2 The enlarged schematic diagram of part A shown below;

[0024] Figure 5 This is a partial structural schematic diagram of a second embodiment of an automatically adjustable aluminum rod furnace exhaust device provided by this utility model.

[0025] The following are the labels in the diagram: 1. Furnace body, 2. Outer shell, 21. Air inlet, 3. Butterfly valve, 31. Exhaust pipe, 4. Fan, 41. Heat exchange assembly, 42. Gas pipe, 43. Burner, 5. Filter assembly, 51. Sealing plate, 52. Baffle plate, 53. Filter screen, 54. Collection frame, 6. Drive motor, 61. Shaft, 62. Rotating plate, 63. Cleaning brush, 7. Insulation cotton. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] First Embodiment

[0028] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of an automatically adjustable aluminum rod furnace exhaust device provided by this utility model; Figure 2 for Figure 1 The diagram shows a cross-sectional view of the outer shell. Figure 3 for Figure 2 The diagram shows a three-dimensional structure of the filter assembly. Figure 4 for Figure 2 The enlarged schematic diagram of part A is shown. An automatically adjustable aluminum rod furnace exhaust device includes: a housing 2;

[0029] The filter assembly 5 is disposed on the inner side of the housing 2. The filter assembly 5 includes a sealing plate 51 disposed on the front side of the housing 2. A partition 52 is fixedly installed on the back side of the sealing plate 51. The partition 52 is disposed on the inner side of the housing 2. A filter screen 53 is fixedly installed inside the partition 52. A collection frame 54 is fixedly installed on one side of the partition 52.

[0030] A drive motor 6 is fixedly installed at one end of the housing 2. A rotating shaft 61 is fixedly installed at the output end of the drive motor 6. A rotating plate 62 is fixedly installed at one end of the rotating shaft 61. A cleaning brush 63 is fixedly installed on one side of the rotating plate 62.

[0031] The butterfly valve 3 is fixedly installed at the other end of the top of the housing 2, and the top of the butterfly valve 3 is fixedly installed with a smoke exhaust pipe 31.

[0032] Multiple screws are installed on the sealing plate 51. When installing the sealing plate 51, one end of the screw is threaded inside the front of the outer casing 2, thereby achieving the function of installing the sealing plate 51.

[0033] A fan 4 is fixedly installed at the other end of the top of the outer shell 2. A gas pipe 42 is fixedly installed at the output end of the fan 4. The middle part of the gas pipe 42 is located on the inner side of the outer shell 2. A heat exchange component 41 is fixedly installed on the outer side of the gas pipe 42. The heat exchange component 41 is located on the outer side of the outer shell 2. A burner 43 is fixedly installed at one end of the gas pipe 42.

[0034] The furnace body 1 is fixedly installed at the bottom of the outer shell 2, and an air inlet 21 is provided at the bottom of the outer shell 2. The air inlet 21 is connected to the interior of the furnace body 1.

[0035] One end of the burner 43 is fixedly installed inside one end of the furnace body 1.

[0036] One side of the cleaning brush 63 is attached to the side of the filter screen 53.

[0037] The outer side of the partition 52 is attached to the inner side of the outer shell 2, and the partition 52 is disposed between the heat exchange assembly 41 and the air inlet 21.

[0038] During operation, the hot flue gas from the combustion chamber of the furnace body 1 enters the upper outer shell 2 through the air inlet 21, heating the heat exchange component 41 inside the outer shell 2. The heat exchange component 41 then transfers the heat to the gas pipe 42, and finally discharges it through the exhaust pipe 31. During this process, outside air is sent into the gas pipe 42 by the fan 7. After being heated by the hot flue gas inside the outer shell 2, it is sent to the burner 43 through the gas pipe 42 to provide combustion air for the burner 43.

[0039] To improve energy efficiency, when burner 43 is operating at full power (full fire and full combustion air), butterfly valve 3 on exhaust pipe 31 automatically opens to its maximum. When the furnace temperature reaches the preset temperature and burner 43 enters the heat preservation state (full fire off and low-frequency combustion air operation), butterfly valve 3 on exhaust pipe 31 automatically closes, thus ensuring that heat inside the furnace is not siphoned out. Butterfly valve 3 is controlled by a 4-20mA analog signal and uses a PLC controller to automatically adjust the opening degree of butterfly valve 3 proportionally according to the amount of combustion air from burner 43.

[0040] The air volume of the blower 4 is matched with the opening degree of the butterfly valve 3. When the air volume of the blower 4 increases, the opening degree of the butterfly valve 3 increases synchronously; when the air volume of the blower 4 decreases, the opening degree of the butterfly valve 3 decreases synchronously.

[0041] The heat exchange component 41 has a finned structure, with copper or aluminum as the main material, and is uniformly welded to the outer side of the gas pipe 42. The fins are distributed in a spiral or straight plate shape, which enhances the heat exchange efficiency by increasing the surface area. The outer side is in contact with the hot flue gas inside the shell 2. The anti-oxidation coating of the fin material can enhance its corrosion resistance in the high-temperature flue gas environment and ensure long-term stable heat exchange.

[0042] The working principle of the automatically adjustable aluminum rod furnace exhaust device provided by this utility model is as follows:

[0043] When in use, the flue gas in the combustion chamber of the furnace body 1 enters the inner side of the outer shell 2 through the air inlet 21, then is filtered by the filter screen 53, and then enters the heat exchange component 41 after it is installed, and then is discharged through the butterfly valve 3 and the exhaust pipe 31. When the exhaust stops, the drive motor 6 will start automatically, thereby driving the cleaning brush 63 through the rotating shaft 61 and the rotating plate 62 to clean the dust on the side of the filter screen 53, so that the impurities fall onto the inner side of the collection frame 54.

[0044] Compared with related technologies, the automatically adjustable exhaust device for aluminum rod furnaces provided by this utility model has the following advantages:

[0045] The structure, consisting of the outer shell 2, filter assembly 5, drive motor 6, rotating shaft 61, rotating plate 62, and cleaning brush 63, works together to ensure efficient heat exchange. During operation, the flue gas from the combustion chamber of the furnace body 1 enters the outer shell 2 through the air inlet 21, is filtered by the filter screen 53, and then contacts the heat exchange assembly 41 for heat exchange. When the exhaust stops, the drive motor 6 automatically starts, driving the cleaning brush 63 to rotate and sweep the dust adhering to the surface of the filter screen 53 into the collection frame 54. This effectively prevents dust from accumulating on the outer side of the heat exchange assembly 4, ensuring stable heat exchange efficiency and thus improving the heating effect on the gas in the gas pipe 42.

[0046] Second Embodiment

[0047] Please refer to the following: Figure 5 Based on the first embodiment of this application which provides an automatically adjustable aluminum rod furnace exhaust device, the second embodiment of this application proposes another automatically adjustable aluminum rod furnace exhaust device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0048] Specifically, the second embodiment of this application provides an automatically adjustable aluminum rod furnace exhaust device, wherein the outer shell 2 of the automatically adjustable aluminum rod furnace exhaust device is provided with insulation cotton 7 fixedly installed inside.

[0049] The working principle of the automatically adjustable aluminum rod furnace exhaust device provided by this utility model is as follows:

[0050] Hot flue gas enters the outer casing 2 through the air inlet 21, and after being filtered by the filter screen 53, it exchanges heat with the heat exchange component 4. At this time, the insulation cotton 7 can reduce the heat loss of the outer casing 21 to the external environment, so as to maintain a higher temperature inside the casing, allowing the heat exchange component 4 to absorb the heat of the flue gas more fully. When the exhaust stops, during the process of the drive motor 6 driving the cleaning brush 63 to clean the filter screen 53, the insulation cotton 7 can still slow down the rate of temperature drop inside the outer casing 2, maintaining good heat exchange conditions for possible subsequent exhaust work.

[0051] Compared with related technologies, the automatically adjustable exhaust device for aluminum rod furnaces provided by this utility model has the following advantages:

[0052] The insulation cotton 7 effectively blocks heat conduction between the outer shell 21 and the outside world, greatly reducing the heat loss to the outside environment during the exhaust process of the aluminum rod furnace, avoiding temperature fluctuations inside the furnace due to heat loss, thereby reducing the additional energy consumption required to maintain the furnace temperature and improving the energy utilization efficiency of the entire aluminum rod furnace system.

[0053] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An automatically adjustable exhaust system for an aluminum rod furnace, characterized in that, include: shell; A filter assembly is disposed on the inner side of the housing. The filter assembly includes a sealing plate disposed on the front side of the housing. A partition is fixedly installed on the back side of the sealing plate. The partition is disposed on the inner side of the housing. A filter screen is fixedly installed inside the partition. A collection frame is fixedly installed on one side of the partition. A drive motor is fixedly installed at one end of the housing. A rotating shaft is fixedly installed at the output end of the drive motor. A rotating plate is fixedly installed at one end of the rotating shaft. A cleaning brush is fixedly installed on one side of the rotating plate. A butterfly valve is fixedly installed at the other end of the top of the housing, and a smoke exhaust pipe is fixedly installed on the top of the butterfly valve.

2. The automatically adjustable aluminum rod furnace exhaust device according to claim 1, characterized in that, A fan is fixedly installed at the other end of the top of the outer shell, and an air pipe is fixedly installed at the output end of the fan. The middle part of the air pipe is located on the inner side of the outer shell, and a heat exchange component is fixedly installed on the outer side of the air pipe. The heat exchange component is located on the outer side of the outer shell, and a burner is fixedly installed at one end of the air pipe.

3. The automatically adjustable aluminum rod furnace exhaust device according to claim 2, characterized in that, The furnace body is fixedly installed at the bottom of the outer shell, and an air inlet is provided at the bottom of the outer shell, which is connected to the interior of the furnace body.

4. The automatically adjustable aluminum rod furnace exhaust device according to claim 3, characterized in that, One end of the burner is fixedly installed inside one end of the furnace body.

5. The automatically adjustable aluminum rod furnace exhaust device according to claim 1, characterized in that, One side of the cleaning brush is attached to the side of the filter screen.

6. The automatically adjustable aluminum rod furnace exhaust device according to claim 3, characterized in that, The outer side of the partition is attached to the inner side of the outer shell, and the partition is disposed between the heat exchange assembly and the air inlet.

7. The automatically adjustable aluminum rod furnace exhaust device according to claim 1, characterized in that, The interior of the outer shell is fixedly fitted with thermal insulation cotton.

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