CN219283939U - Metal melting furnace capable of utilizing waste heat in multiple stages - Google Patents
Metal melting furnace capable of utilizing waste heat in multiple stages Download PDFInfo
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- CN219283939U CN219283939U CN202320568467.0U CN202320568467U CN219283939U CN 219283939 U CN219283939 U CN 219283939U CN 202320568467 U CN202320568467 U CN 202320568467U CN 219283939 U CN219283939 U CN 219283939U
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Abstract
The utility model relates to the technical field of metal melting furnaces, and discloses a metal melting furnace capable of utilizing waste heat in multiple stages, which comprises a furnace body, wherein a combustion chamber, a heat storage heat exchange chamber and a crucible are arranged on the furnace body; the flue gas discharged from the combustion chamber firstly enters the second heat accumulator and then enters the heat accumulating and exchanging chamber. The utility model adopts a three-stage heat energy utilization structure, has high tail gas waste heat recovery and utilization rate, and greatly reduces the tail gas discharge temperature; in the working process, when the temperature of the melting material in the crucible reaches the production requirement, the fuel combustion of the combustion chamber can be stopped, the melting furnace stops heating, slowly releases heat to the combustion chamber through the first heat accumulator and the second heat accumulator, and keeps the constant temperature of the combustion chamber, so that the combustion time of the melting furnace is shortened.
Description
Technical Field
The utility model relates to the technical field of metal melting furnaces, in particular to a metal melting furnace capable of utilizing waste heat in multiple stages.
Background
The metal melting furnace is a heating furnace for melting and casting a metal raw material. The common metal melting furnace is provided with a combustion chamber and a smelting crucible, fuel is combusted in the combustion chamber, heat energy generated by combustion of the fuel is transferred to the smelting crucible, and metal in the crucible is heated and melted, so that the aim of reutilization is fulfilled. In the smelting process, the heat in the combustion chamber cannot be completely transferred to the smelting crucible, and the problem that the heat is lost along with tail gas inevitably exists.
The utility model patent with publication number of CN215766433U and publication date of 2022.02.08, which is earlier filed by the inventor, discloses a melting furnace of an integrated heat storage and exchange device, which comprises: the heat storage chamber comprises a first heat storage chamber and a second heat storage chamber which are mutually separated, and the first heat storage chamber and the second heat storage chamber are respectively connected with the combustion chamber through the corresponding connecting channels; the furnace body is also provided with a four-way reversing valve, the first heat accumulation chamber and the second heat accumulation chamber are respectively connected to one interface of the four-way reversing valve, and the other two interfaces of the four-way reversing valve are respectively connected with a blower and a tail gas discharge pipeline; and tail gas discharged from the combustion chamber absorbs heat through the first heat storage chamber and is discharged outwards, and outside air absorbs heat in the second heat storage chamber and enters the combustion chamber. The utility model can reduce the exhaust emission temperature and improve the heat utilization rate. The application is further optimized on the original basis.
It should be noted that the content described in the background art is made by the inventor according to the technical level, the knowledge level and the searching capability of the inventor, and is only used for reference. Moreover, the content described in the background art is not necessarily the prior art, nor does it mean that the content in the background art is accurate and objective; this does not affect one skilled in the art to practice the utility model in light of the detailed description that follows.
Disclosure of Invention
The utility model aims to provide a metal melting furnace which can realize multistage utilization of waste heat, realize the stopping and constant temperature of the furnace body and has better energy saving and consumption reduction effects, and at least provides a beneficial selection or creation condition for solving one or more technical problems in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
The metal melting furnace comprises a furnace body, wherein a combustion chamber, a heat accumulating heat exchanging chamber and a crucible are arranged on the furnace body, the heat accumulating heat exchanging chamber comprises a first heat exchanging chamber and a second heat exchanging chamber which are mutually separated and mutually exchange heat, and the first heat exchanging chamber and the second heat exchanging chamber are respectively connected with the combustion chamber through corresponding connecting channels; the combustion tail gas of the combustion chamber is discharged after passing through the first heat exchange chamber, and the external air enters the combustion chamber after passing through the second heat exchange chamber; the furnace body is also provided with a first heat accumulator and a second heat accumulator, and the first heat accumulator and the second heat accumulator are arranged around the combustion chamber, are used for isolating fire, accumulating heat and releasing heat to the combustion chamber; and flue gas discharged from the combustion chamber firstly enters the second heat accumulator and then enters the heat accumulating and exchanging chamber.
More preferably, the first heat accumulator is composed of a plurality of first heat accumulating units, each first heat accumulating unit is embedded on the inner wall of the combustion chamber, and a heat insulation layer is arranged between each first heat accumulating unit and the outer wall of the furnace body.
More preferably, the first heat storage unit is arranged in one layer, two sides or multiple layers on the inner wall of the combustion chamber.
More preferably, the first heat storage units are regularly or irregularly arranged on the inner wall of the combustion chamber.
More preferably, the second heat storage body is constituted by a plurality of second heat storage units, each of which has a main body portion having a columnar shape serving as a main heat storage and release portion, and a tail portion for effecting connection of the second heat storage unit to the furnace body.
More preferably, a second heat accumulator installation cavity is arranged in the furnace body, a plurality of inserting grooves are formed in the cavity wall of the second heat accumulator installation cavity, and each second heat accumulator unit is detachably inserted into each inserting groove through a corresponding tail fin part.
More preferably, each second heat storage unit is staggered or arranged side by side.
More preferably, the tail section is wedge-shaped or T-shaped.
More preferably, the first heat accumulator and the second heat accumulator are adsorption-desorption heat accumulator or high-temperature phase-change heat accumulator.
The technical scheme provided by the utility model has at least the following technical effects or advantages.
1. The first heat accumulator and the second heat accumulator are arranged on the furnace body, when the temperature of the melting material in the crucible reaches the production requirement, the fuel combustion of the combustion chamber can be stopped, the melting furnace stops heating, slowly releases heat to the combustion chamber through the first heat accumulator and the second heat accumulator, and keeps the constant temperature of the combustion chamber, so that the combustion time of the melting furnace is shortened, and the purposes of saving energy and reducing consumption are achieved.
2. The first heat accumulator, the second heat accumulator and the heat accumulating and exchanging chamber form a three-level heat energy utilization structure on the furnace body, so that the tail gas waste heat recovery and utilization rate is high, the tail gas discharge temperature is greatly reduced, the energy consumption is saved, the emission of pollutants such as carbon dioxide is reduced, and the environment is protected.
Drawings
Fig. 1 is a schematic diagram of a multi-stage waste heat utilization melting furnace according to the present utility model.
Fig. 2 shows a partial cross-sectional view of the furnace body.
Fig. 3 is a schematic structural view of the first heat storage unit.
Fig. 4 shows another partial cross-sectional view of the furnace body.
Fig. 5 is a schematic structural view of the second heat storage unit.
Fig. 6 shows a side view of fig. 5.
Fig. 7 is a schematic layout diagram of the second heat storage unit, and arrows in the diagram represent the flow direction of the flue gas.
Reference numerals illustrate.
1: furnace body, 2: combustion chamber, 3: heat storage and exchange chamber, 4: crucible, 5: first heat accumulator, 6: second heat accumulator, 7: and a heat insulation layer.
5-1: a first heat storage unit.
6-1: body portion, 6-2: tail portions.
Detailed Description
The following description of the specific embodiments of the present utility model is further provided with reference to the accompanying drawings, so that the technical scheme and the beneficial effects of the present utility model are more clear and definite. The embodiments described below are exemplary by referring to the drawings for the purpose of illustrating the utility model and are not to be construed as limiting the utility model.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, or may be learned by practice of the utility model.
Referring to fig. 1, a metal melting furnace for multi-stage utilization of waste heat comprises a furnace body 1, wherein a combustion chamber 2, a heat accumulating heat exchanging chamber 3 and a crucible 4 are arranged on the furnace body 1, the heat accumulating heat exchanging chamber 3 comprises a first heat exchanging chamber and a second heat exchanging chamber which are mutually separated and mutually exchange heat, and the first heat exchanging chamber and the second heat exchanging chamber are respectively connected with the combustion chamber 2 through corresponding connecting channels; during operation, the combustion tail gas of the combustion chamber 2 absorbs heat through the first heat exchange chamber and is discharged, and the outside air absorbs heat in the second heat exchange chamber and enters the combustion chamber 2.
Compared with the prior art, the utility model has the main improvements that the furnace body 1 is also provided with a first heat accumulator 5 and a second heat accumulator 6, and the first heat accumulator 5 and the second heat accumulator 6 are arranged around the combustion chamber 2 and used for isolating fire, accumulating heat and releasing heat to the combustion chamber 2; the flue gas exhausted from the combustion chamber 2 firstly enters the second heat accumulator 6 to absorb a part of heat and then enters the heat accumulating and exchanging chamber 3 to exchange heat. Therefore, when the temperature of the melting material in the crucible 4 reaches the production requirement, the combustion of the fuel in the combustion chamber 2 can be stopped, the melting furnace stops heating, and the first heat accumulator 5 and the second heat accumulator 6 slowly release heat to the combustion chamber 2 to keep the constant temperature of the combustion chamber 2, so that the combustion time of the melting furnace is shortened, and the purposes of energy conservation and consumption reduction are achieved.
Referring to fig. 2 and 3, the first heat storage body 5 is formed by a plurality of first heat storage units 5-1, each first heat storage unit 5-1 is embedded on the inner wall of the combustion chamber 2, and a heat insulation layer 7 is arranged between each first heat storage unit 5-1 and the outer wall of the furnace body; so as to minimize the heat dissipation of the first heat accumulator 5 to the outside of the furnace body. In this embodiment, it is preferable that the first heat storage unit 5-1 is a trapezoidal block unit, and the narrower end of the first heat storage unit 5-1 faces the combustion chamber after being buried on the inner wall of the combustion chamber 2; to avoid accidental disengagement of the first thermal storage unit 5-1.
It should be noted that the specific shape of the first heat storage unit may be changed according to actual needs, and is not limited to the trapezoid block shape illustrated above. According to different actual needs, the first heat storage units can be regularly or irregularly arranged on the inner wall of the combustion chamber.
Referring to fig. 4 to 6, the second heat storage body 6 is composed of a plurality of second heat storage units, each of the second heat storage units has a main body portion 6-1 and a tail portion 6-2, the main body portion 6-1 is columnar and serves as a main heat storage and release portion, and the tail portion 6-2 is wedge-shaped and is used for realizing connection of the second heat storage unit with the furnace body 1. Specifically, a second heat accumulator installation cavity is arranged in the furnace body 1, a plurality of inserting grooves are formed in the cavity wall of the second heat accumulator installation cavity, and each second heat accumulator unit is detachably inserted into each inserting groove through a corresponding tail wing part 6-2; this facilitates the installation and replacement of the second heat storage body 6.
Referring to fig. 7, in this embodiment, the second heat storage units are staggered to extend the path of the flue gas flowing through the second heat storage unit 6. In some embodiments, each of the second thermal storage units may be side-by-side; the present embodiment is not limited.
It should be noted that the tail fin portion 6-2 may be configured in other pluggable shapes such as a T-shape, and in addition, the second heat storage unit may be configured to be connected with the furnace body in a non-detachable manner, such as pre-buried, according to different actual needs by those skilled in the art; the present embodiment is not limited.
It should be further noted that, the first heat storage unit and the second heat storage unit are known in the prior art, and are adsorption and desorption heat storage and heat release bodies or high-temperature phase change heat storage and heat release bodies, or other heat storage and heat release bodies that can be realized in the future, which are selected by those skilled in the art according to actual needs and are common technical knowledge mastered by those skilled in the art. The specific structural design of the heat storage and exchange chamber 3 is a prior art, and will not be described in detail here.
The embodiment provides a metal melting furnace is utilized to waste heat multistage, its theory of operation is: 1) When the melting furnace is in heating operation, the first heat accumulator 5 can play a role in isolating fire and accumulating heat, and the second heat accumulator 6 absorbs the heat of the flue gas to accumulate heat; when the temperature of the melting material reaches the production requirement, the melting furnace stops burning and heating, the first heat accumulator 5 and the second heat accumulator 6 slowly release heat to the hearth to keep constant temperature, so that the burning time of the melting furnace is reduced, and the purposes of energy saving and consumption reduction are achieved. After the flue gas absorbs a part of heat through the second heat accumulator 6, the flue gas enters the heat accumulating and exchanging chamber 3 through a corresponding connecting channel to carry out final heat accumulation and recovery, so that pollutant emission is reduced, the environment is protected, and the temperature of the tail gas reaches the emission requirement; the cold air entering the combustion chamber 2 for combustion absorbs the heat of the heat accumulating and heat exchanging chamber 3, so that the air temperature is improved, and the energy is further saved.
The metal melting furnace capable of utilizing the waste heat in multiple stages has the advantages of being high in heat exchange efficiency, capable of greatly reducing exhaust emission temperature, small in equipment size, few in pipelines, capable of reducing heat dissipation area, beneficial to production and the like.
It should be further noted that, in the description of the present utility model, terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. refer to the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such features, and in the description of the utility model, "at least" means one or more, unless clearly specifically defined otherwise.
In the present utility model, unless explicitly stated and limited otherwise, the terms "assembled," "connected," and "connected" are to be construed broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; can be directly connected or connected through an intermediate medium, and can be communicated with the inside of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless specified and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "below," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply representing the first feature as having a higher level than the second feature. The first feature being "above," "below," and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or simply indicating that the first feature is level below the second feature.
It will be understood by those skilled in the art from the foregoing description of the structure and principles that the present utility model is not limited to the specific embodiments described above, but is intended to cover modifications and alternatives falling within the spirit and scope of the utility model as defined by the appended claims and their equivalents. The portions of the detailed description that are not presented are all prior art or common general knowledge.
Claims (9)
1. The metal melting furnace comprises a furnace body, wherein a combustion chamber, a heat storage heat exchange chamber and a crucible are arranged on the furnace body, the heat storage heat exchange chamber comprises a first heat exchange chamber and a second heat exchange chamber which are mutually separated and exchange heat, and the first heat exchange chamber and the second heat exchange chamber are respectively connected with the combustion chamber through corresponding connecting channels; the combustion tail gas of the combustion chamber is discharged after passing through the first heat exchange chamber, and the external air enters the combustion chamber after passing through the second heat exchange chamber; it is characterized in that the method comprises the steps of,
the furnace body is also provided with a first heat accumulator and a second heat accumulator, and the first heat accumulator and the second heat accumulator are arranged around the combustion chamber and used for insulating fire, accumulating heat and releasing heat to the combustion chamber; and flue gas discharged from the combustion chamber firstly enters the second heat accumulator and then enters the heat accumulating and exchanging chamber.
2. The metal melting furnace for multi-stage utilization of waste heat according to claim 1, wherein the first heat accumulator is composed of a plurality of first heat accumulating units, each first heat accumulating unit is embedded on the inner wall of the combustion chamber, and a heat insulation layer is arranged between each first heat accumulating unit and the outer wall of the furnace body.
3. The metal melting furnace for multistage utilization of waste heat according to claim 2, wherein the first heat storage unit is arranged in one layer, two sides or multiple layers on the inner wall of the combustion chamber.
4. The metal melting furnace for multistage utilization of waste heat according to claim 2, wherein the first heat storage units are regularly or irregularly arranged on the inner wall of the combustion chamber.
5. The metal melting furnace for multistage utilization of waste heat according to claim 1, wherein the second heat storage body is composed of a plurality of second heat storage units, each of the second heat storage units has a main body portion and a tail portion, the main body portion is columnar and serves as a main heat storage and release portion, and the tail portion is used for realizing connection of the second heat storage unit with the furnace body.
6. The metal melting furnace for multistage utilization of waste heat according to claim 5, wherein a second heat accumulator installation cavity is arranged in the furnace body, a plurality of inserting grooves are formed in the cavity wall of the second heat accumulator installation cavity, and each second heat accumulator unit is detachably inserted into each inserting groove through a corresponding fin part.
7. The metal melting furnace for multi-stage utilization of waste heat according to claim 6, wherein the second heat storage units are arranged in a staggered manner or are arranged side by side.
8. The metal melting furnace for multi-stage utilization of waste heat according to claim 5, wherein the tail section is wedge-shaped or T-shaped.
9. The metal melting furnace for multi-stage utilization of waste heat according to claim 1, wherein the first heat accumulator and the second heat accumulator are adsorption-desorption heat accumulator and heat accumulator or high-temperature phase-change heat accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320568467.0U CN219283939U (en) | 2023-03-21 | 2023-03-21 | Metal melting furnace capable of utilizing waste heat in multiple stages |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320568467.0U CN219283939U (en) | 2023-03-21 | 2023-03-21 | Metal melting furnace capable of utilizing waste heat in multiple stages |
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| Publication Number | Publication Date |
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| CN219283939U true CN219283939U (en) | 2023-06-30 |
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| CN202320568467.0U Active CN219283939U (en) | 2023-03-21 | 2023-03-21 | Metal melting furnace capable of utilizing waste heat in multiple stages |
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