Aluminum alloy smelting furnace combustion equipment

Abstract

The utility model relates to the technical field of metal smelting equipment, in particular to aluminum alloy smelting furnace combustion equipment which comprises a heat exchange box, a smoke inlet pipe, a smoke outlet pipe, an air inlet pipe and a hot air pipe, the smoke inlet pipe and the hot air pipe are connected to the two opposite sides of a smelting furnace respectively, and a spray gun is arranged at the joint of the hot air pipe and the smelting furnace; the heat exchange box comprises a box body and a plurality of core pipes, the core pipes are located in the box body, an inner cavity of the box body is filled with a heat storage body, the smoke inlet pipe and the smoke outlet pipe are communicated with the two opposite sides of the box body respectively, and the air inlet pipe and the hot air pipe are communicated with the two ends of the core pipes respectively. And the smoke inlet pipe is provided with a filtering mechanism. According to the aluminum alloy smelting furnace combustion equipment, smoke heat recovery and air preheating are completed through one heat storage chamber, the structure is simple, and heat storage bodies do not need to be replaced frequently.

Description

Technical Field

[0001] The utility model relates to the technical field of metal smelting equipment, in particular to a combustion equipment for an aluminum alloy melting furnace. Background Art

[0002] The heat loss of the furnace is high when the metal is smelted, so the heat of the flue gas discharged from the furnace is usually recovered. In the prior art, the furnace is usually equipped with two heat storage chambers. After the flue gas heats the heat storage body in one heat storage chamber, the air is passed through the heat storage chamber and input into the furnace. At this time, the flue gas is transferred to the other heat storage chamber. The two heat storage chambers alternately store heat, such as a smelting system of scrap aluminum disclosed in CN216815005U. The setting of two heat storage devices makes the structure of the heat exchange system complicated. At present, there are also furnaces equipped with a heat storage chamber, such as a heat storage chamber of a smelting and insulation furnace disclosed in CN214842428U. The heat-conducting partition divides the interior of the heat storage chamber into two parts. The heat storage balls above the heat-conducting partition absorb the heat in the flue gas, and the heat storage balls below the heat-conducting partition preheat the air, discharge the heat storage balls below that have released heat, and then allow the heat storage balls above to enter the bottom to preheat the air again. It can be seen that although the two heat storage chambers are merged into one, the heat storage balls still need to be replaced frequently, the heat storage chamber structure is relatively complex and the operation is cumbersome. Utility Model Content

[0003] The utility model aims to provide an aluminum alloy melting furnace combustion device, which adopts a heat storage chamber to complete flue gas heat recovery and preheating air, has a simple structure and does not need to frequently replace the heat storage body.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] An aluminum alloy furnace combustion device comprises a heat exchange box, a smoke inlet pipe, a smoke outlet pipe, an air inlet pipe and a hot air pipe, wherein the smoke inlet pipe and the hot air pipe are respectively connected to opposite sides of the furnace, and a spray gun is arranged at the connection between the hot air pipe and the furnace;

[0006] The heat exchange box comprises a box body and a plurality of core tubes, wherein the core tubes are located in the box body, the inner cavity of the box body is filled with a heat storage body, the smoke inlet pipe and the smoke outlet pipe are respectively connected to the two opposite sides of the box body, and the air inlet pipe and the hot air pipe are respectively connected to the two ends of the core tube;

[0007] The smoke inlet pipe is provided with a filtering mechanism.

[0008] Furthermore, the heat storage body is a ceramic ball, the top of the box is provided with a feeding port, and the bottom of the box is provided with a discharge port.

[0009] Furthermore, the box body is barrel-shaped, the core tube and the box body are parallel to each other in the axial direction, the smoke inlet pipe is connected to the upper part of one side of the box body, and the smoke outlet pipe is connected to the lower part of the other side of the box body.

[0010] Furthermore, the feed port and the smoke inlet pipe are located on a first side of the box body, a first inclined baffle is provided at the top end of a second side of the box body, and the first side is opposite to the second side;

[0011] The core tube passes through the first inclined baffle.

[0012] Furthermore, the material outlet and the smoke outlet pipe are located on the second side of the box body, a second inclined baffle is provided at the bottom end of the first side of the box body, and the core tube passes through the second inclined baffle.

[0013] Furthermore, an isolation grid is provided at the connection between the smoke inlet pipe, the smoke outlet pipe and the box body.

[0014] Furthermore, a plurality of the core tubes are provided with mounting plates at the top and bottom, respectively, and the openings of the core tubes are located on the mounting plates;

[0015] The mounting plate is connected to the box body, and the air inlet pipe and the hot air pipe are respectively connected to the mounting plate;

[0016] The feeding port and the discharging port are located on one side of the mounting plate.

[0017] Furthermore, the filtering mechanism comprises a mounting ring and a filter screen, the edge of the filter screen is fixed to the inner wall of the mounting ring, the mounting ring is provided with an ash discharge hole, and the ash discharge hole is closed by a cover body;

[0018] The ash discharge hole is located directly below the filter screen.

[0019] Furthermore, the box body is provided with a connecting pipe, one end of the mounting ring is connected to the connecting pipe via a flange, and the other end of the mounting ring is communicated with the smoke inlet pipe via a flange.

[0020] The technical solution provided by the utility model may have the following beneficial effects:

[0021] The utility model arranges a core tube in a box body and fills a heat storage body in the box body, so that air passes through the core tube of the heat exchange box and smoke passes through the box body, the heat storage body in the box body realizes heat recovery of the smoke, and the heat exchange effect of the core tube realizes preheating of the smoke to the air, so that the heat recovery and air preheating of the smoke are realized by using one heat exchange box, which greatly simplifies the equipment structure and does not need to frequently replace the heat storage body, making the equipment easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an aluminum alloy melting furnace combustion device according to an embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of the coordination of the smoke inlet pipe, smoke outlet pipe, air inlet pipe and hot air pipe with the heat exchange box;

[0024] Figure 3 is a cross-sectional view of the heat exchange box;

[0025] Figure 4 is a schematic diagram of the top surface of the heat exchange box;

[0026] Among them, the heat exchange box 1, the box body 11, the feeding port 111, the discharging port 112, the first inclined baffle 113, the second inclined baffle 114, the isolation grid 115, the connecting pipe 116, the core pipe 12, the mounting plate 121, and the heat storage body 13;

[0027] Smoke inlet pipe 2, smoke outlet pipe 3, air inlet pipe 4; hot air pipe 5, spray gun 51; filter mechanism 6, mounting ring 61, filter screen 62, cover body 63; melting furnace 7. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance.

[0030] In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Combine the following Figures 1 to 4 , describing an aluminum alloy furnace combustion device according to an embodiment of the utility model.

[0033] A combustion device for an aluminum alloy melting furnace 7, comprising a heat exchange box 1, a smoke inlet pipe 2, a smoke outlet pipe 3, an air inlet pipe 4 and a hot air pipe 5, wherein the smoke inlet pipe 2 and the hot air pipe 5 are respectively connected to opposite sides of the melting furnace 7, and a spray gun 51 is provided at the connection between the hot air pipe 5 and the melting furnace 7;

[0034] The heat exchange box 1 includes a box body 11 and a plurality of core tubes 12. The core tubes 12 are located in the box body 11. The inner cavity of the box body 11 is filled with a heat storage body 13. The smoke inlet pipe 2 and the smoke outlet pipe 3 are respectively connected to the two opposite sides of the box body 11. The air inlet pipe 4 and the hot air pipe 5 are respectively connected to the two ends of the core tube 12.

[0035] The smoke inlet pipe 2 is provided with a filtering mechanism 6 .

[0036] In the present technical solution, the smoke inlet pipe 2, the smoke outlet pipe 3, the air inlet pipe 4 and the hot air pipe 5 are all connected to the heat exchange box 1, so that the air passes through the core tube 12 of the heat exchange box 1 and the smoke passes through the box body 11. The heat storage body 13 in the box body 11 realizes the heat recovery of the smoke. The heat exchange effect of the core tube 12 realizes the preheating of the smoke to the air. When the melt in the furnace 7 is dumped and restarted, based on the heat storage effect of the heat storage body 13, the cooling speed of the heat storage body 13 is slow, so the air that is introduced into the furnace 7 again can still be preheated. The aluminum alloy furnace 7 combustion equipment of the present technical solution adopts a heat exchange box 1 to realize the recovery of smoke heat and air preheating, which greatly simplifies the equipment structure, and does not need to frequently replace the heat storage body 13, making the equipment simple to operate. It can be understood that the outer wall of the heat exchange box 1 is coated with a thermal insulation layer.

[0037] In addition, by arranging a filter mechanism 6 in the smoke inlet pipe 2 to filter out most of the smoke dust in the smoke, the cleaning cycle of the heat storage body is greatly extended.

[0038] Exemplarily, the core tube 12 is a round tube or a corrugated tube, or the core tube 12 has an axial groove to increase the heat exchange area.

[0039] In one embodiment of the utility model, the heat storage body 13 is a ceramic ball, a feeding port 111 is provided at the top of the box 11, and a discharge port 112 is provided at the bottom of the box 11. The ceramic ball has good fluidity. When the ceramic ball is covered with a lot of soot, the discharge port 112 at the bottom of the box 11 is opened, and the ceramic ball can be discharged under the action of gravity, and then new ceramic balls are added to the feeding port 111 at the top of the box 11. It should be noted that although the smoke inlet pipe 2 has a filtering mechanism 6, in order to ensure the smooth flow of smoke, the filtering mechanism 6 cannot filter out all the smoke in the smoke, and there are still fine dust particles entering the box 11. After the equipment has been running for a long time, a large amount of smoke is attached to the surface of the ceramic ball, which affects the heat storage capacity of the ceramic ball, and the ceramic ball needs to be taken out and cleaned.

[0040] In one embodiment of the utility model, the box body 11 is cylindrical, the core tube 12 and the box body 11 are parallel to each other in the axial direction, the smoke inlet pipe 2 is connected to the upper part of one side of the box body 11, and the smoke outlet pipe 3 is connected to the lower part of the other side of the box body. Compared with the square box body, the circular box body occupies a small area, is easy to install, and is easy to replace the ceramic balls. The core tube 12 and the box body 11 are parallel to each other in the axial direction, and the number of core tubes 12 can be increased, thereby achieving a better air preheating effect.

[0041] In one embodiment of the utility model, the feed port 111 and the smoke inlet pipe 2 are located on the first side of the box body 11, and a first inclined baffle 113 is provided at the top of the second side of the box body 11, with the first side being opposite to the second side; the core tube 12 passes through the first inclined baffle 113. The edge of the first inclined baffle 113 is connected to the inner wall of the box body 11, and the first inclined baffle 113 blocks the flue gas fluid of the smoke inlet pipe 2, so that the flue gas can fill the entire box body 11 to heat all the ceramic balls and exchange heat with all the core tubes 12, thereby increasing the heat recovery of the flue gas. Exemplarily, the edge of the first inclined baffle 113 is welded to the inner wall of the box body 11, and the projection area of ​​the first inclined baffle 113 at the bottom of the box body 11 is at least 0.5 times the cross-sectional area of ​​the box body 11, thereby opening a through hole for the core tube 12 to pass through in the first inclined baffle 113.

[0042] Preferably, the discharge port 112 and the smoke outlet pipe 3 are located on the second side of the box body 11, and a second inclined baffle 114 is provided at the bottom end of the first side of the box body 11, and the core tube 12 passes through the second inclined baffle 114. The second inclined baffle 114 guides the smoke, eliminates the dead corners in the box body 11 where the smoke cannot flow, and facilitates the discharge of the ceramic balls. When the discharge port 112 at the bottom of the box body 11 is opened, all the ceramic balls in the box body 11 can be discharged. Exemplarily, the edge of the second inclined baffle is welded to the inner wall of the box body 11, and the projection area of ​​the second inclined baffle 114 at the bottom of the box body 11 is at least 0.5 times the cross-sectional area of ​​the box body 11, thereby opening a through hole in the first inclined baffle 113 for the core tube 12 to pass through.

[0043] Preferably, an isolation grid 115 is provided at the connection between the smoke inlet pipe 2 and the smoke outlet pipe 3 and the box body 11 to prevent the small ceramic balloons in the box body 11 from leaking out.

[0044] In one embodiment of the present invention, referring to Figure 4 A mounting plate 121 is respectively provided at the top and bottom of the core tubes 12, and the opening of the core tube 12 is located on the mounting plate 121; the mounting plate 121 is connected to the box body 11, and the air inlet pipe 4 and the hot air pipe 5 are respectively connected to the mounting plate 121; the feeding port 111 and the discharging port 112 are located on one side of the mounting plate 121.

[0045] The mounting plate 121 is used to realize the positioning of the core plate in the box body 11 and realize the communication between the air inlet pipe 4 and the hot air pipe 5 and the core pipe 12. Exemplarily, the edge of the mounting plate 121 is welded to the top or bottom of the box body 11, or the edge of the mounting plate 121 is fixedly mounted to the top or bottom of the box body 11 by screws; the end of the core pipe 12 is welded to the mounting plate 121. The side of the mounting plate 121 facing away from the box body 11 is connected to the air inlet pipe 4 or the hot air pipe 5 through a connecting tube, and the opening of the core pipe 12 is located on the mounting plate 121, so that the air inlet pipe 4 or the hot air pipe 5 is connected to the core pipe 12.

[0046] Reference Figure 4 The mounting plate 121 has a relief portion, which is convenient for setting the feeding port 111 and the discharging port 112 on the box body 11. Preferably, the core tube 12 near the relief portion is bent to fill the inner cavity of the box body 11 corresponding to the relief portion.

[0047] In one embodiment of the utility model, the filter mechanism 6 includes a mounting ring 61 and a filter screen 62. The edge of the filter screen 62 is fixed to the inner wall of the mounting ring 61. The mounting ring 61 is provided with an ash discharge hole, which is closed by a cover body 63. The ash discharge hole is located directly below the filter screen 62. As a result, the ash attached to the filter screen 62 can be discharged from the ash discharge hole, and the filter screen 62 can be cleaned without disassembly, which is convenient for cleaning. It can be understood that after opening the cover body 63, the filter screen 62 is vibrated, and the attached ash can fall off, so as to achieve cleaning. The cover body 63 blocks the ash discharge hole by threaded connection or screw connection.

[0048] Preferably, the box body 11 is provided with a connecting pipe 116 , one end of the mounting ring 61 is connected to the connecting pipe 116 via a flange, and the other end of the mounting ring 61 is connected to the smoke inlet pipe 2 via a flange.

[0049] Other structures and operations of an aluminum alloy melting furnace combustion device according to an embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.

[0050] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An aluminum alloy melting furnace combustion equipment, characterized in that: It includes a heat exchange box, a smoke inlet pipe, a smoke outlet pipe, an air inlet pipe and a hot air pipe, wherein the smoke inlet pipe and the hot air pipe are respectively connected to two opposite sides of the furnace, and a spray gun is provided at the connection between the hot air pipe and the furnace; The heat exchange box comprises a box body and a plurality of core tubes, wherein the core tubes are located in the box body, the inner cavity of the box body is filled with a heat storage body, the smoke inlet pipe and the smoke outlet pipe are respectively connected to the two opposite sides of the box body, and the air inlet pipe and the hot air pipe are respectively connected to the two ends of the core tube; The smoke inlet pipe is provided with a filtering mechanism.

2. The aluminum alloy melting furnace combustion equipment according to claim 1, characterized in that: The heat storage body is a ceramic ball. The top of the box is provided with a feeding port, and the bottom of the box is provided with a discharging port.

3. The aluminum alloy melting furnace combustion equipment according to claim 2, characterized in that: The box body is in a cylindrical shape, the core tube and the box body are parallel to each other in the axial direction, the smoke inlet pipe is connected to the upper part of one side of the box body, and the smoke outlet pipe is connected to the lower part of the other side of the box body.

4. The aluminum alloy melting furnace combustion equipment according to claim 3, characterized in that: The feed port and the smoke inlet pipe are located on a first side of the box body, a first inclined baffle is provided at the top end of a second side of the box body, and the first side is opposite to the second side; The core tube passes through the first inclined baffle.

5. The aluminum alloy melting furnace combustion equipment according to claim 4, characterized in that: The material outlet and the smoke outlet pipe are located on the second side of the box body, a second inclined baffle is provided at the bottom end of the first side of the box body, and the core tube passes through the second inclined baffle.

6. The aluminum alloy melting furnace combustion equipment according to claim 3, characterized in that: An isolation grid is provided at the connection between the smoke inlet pipe, the smoke outlet pipe and the box body.

7. The aluminum alloy melting furnace combustion equipment according to claim 2, characterized in that: The top and bottom of the core tubes are respectively provided with mounting plates, and the openings of the core tubes are located on the mounting plates; The mounting plate is connected to the box body, and the air inlet pipe and the hot air pipe are respectively connected to the mounting plate; The feeding port and the discharging port are located on one side of the mounting plate.

8. The aluminum alloy melting furnace combustion equipment according to claim 1, characterized in that: The filter mechanism comprises a mounting ring and a filter screen, the edge of the filter screen is fixed to the inner wall of the mounting ring, the mounting ring is provided with an ash discharge hole, and the ash discharge hole is closed by a cover body; The ash discharge hole is located directly below the filter screen.

9. The aluminum alloy melting furnace combustion equipment according to claim 8, characterized in that: The box body is provided with a connecting pipe, one end of the mounting ring is connected to the connecting pipe through a flange, and the other end of the mounting ring is communicated with the smoke inlet pipe through a flange.

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