CN217383737U - Regenerated metal melting equipment - Google Patents

Abstract

The utility model discloses a reclaimed metal melting equipment that returns, include: a charging chamber for accommodating a raw material to be smelted; a combustion chamber; the flue gas circulating device is connected between the charging chamber and the combustion chamber and used for inputting the flue gas in the charging chamber into the combustion chamber; the molten metal circulating device is connected between the charging chamber and the combustion chamber and used for inputting the molten metal in the combustion chamber into the charging chamber; the combustion chamber is communicated with the feeding chamber, high-temperature flue gas can be input into the feeding chamber through the combustion chamber, and molten metal can be input into the combustion chamber through the feeding chamber. The utility model discloses can adapt to the raw materials of different specifications, and smelt the in-process energy saving and emission reduction, effectively promote the rate of recovery.

Description

Regenerated metal melting equipment

Technical Field

The utility model relates to a metal melting technical field, in particular to recycled metal melting equipment that goes back.

Background

The regenerated metal is metal and its alloy refined with waste metal product and metal waste material produced in industrial production. Because the raw materials of retrieving on the market are more complicated, if the size of raw materials differs, and retrieve with the form of packing material mostly, the raw materials carries impurity or its self contains pollutants such as paint, coating, if directly return the stove smelting with the raw materials, can produce a large amount of harmful gas in the combustion process, and be difficult to produce qualified clean molten metal.

Therefore, the existing raw materials need to be subjected to a series of pretreatment before returning and smelting, the raw materials need to be crushed firstly, impurities which are easy to separate in the raw materials are removed, paint, coatings and the like are subjected to thermal decomposition by decomposition equipment in a high-temperature mode, and finally the clean raw materials are sent into a smelting furnace for smelting to produce qualified molten metal for subsequent casting.

From the above description, a series of equipment is required for remelting the raw material, and raw material consumption and a large amount of energy consumption exist in the pretreatment process, which are not beneficial to energy conservation, emission reduction and cost reduction. In addition, the processing equipment required for the different raw materials is different, which further increases the cost of the smelting process.

Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a regenerated metal melting equipment that returns of energy saving and emission reduction, reduction in production cost.

The utility model aims at realizing through the following technical scheme: a recycled metal meltback smelting plant comprising: a charging chamber for accommodating a raw material to be smelted; a combustion chamber; the flue gas circulating device is connected between the charging chamber and the combustion chamber and used for inputting the flue gas in the charging chamber into the combustion chamber; the molten metal circulating device is connected between the charging chamber and the combustion chamber and used for inputting the molten metal in the combustion chamber into the charging chamber; the combustion chamber is communicated with the feeding chamber, high-temperature flue gas can be input into the feeding chamber through the combustion chamber, and molten metal can be input into the combustion chamber through the feeding chamber.

Further, the flue gas circulation device comprises: the first flue gas pipeline is communicated with the feeding chamber; the second flue gas pipeline is communicated with the combustion chamber; and the first driving piece is connected between the first flue gas pipeline and the second flue gas pipeline and provides driving force for conveying the flue gas from the first flue gas pipeline to the second flue gas pipeline.

Further, the raw materials stack up in the loading chamber, the loading chamber has the flue gas entry, first flue gas pipeline with the flue gas entry is located respectively the loading chamber is in the both sides on the direction of piling up.

Further, the combustion chamber includes the nozzle, the second flue gas pipeline is connected the combustion chamber is close to the position department of nozzle. Further, the molten metal circulating apparatus includes: the first molten metal pipeline is communicated with the feeding chamber; the second molten metal pipeline is communicated with the combustion chamber; and the second driving piece is connected between the first molten metal pipeline and the second molten metal pipeline and provides driving force for conveying molten metal from the second molten metal pipeline to the first molten metal pipeline.

Further, the first metal liquid pipe is connected at a position at or near the bottom of the charging chamber.

Furthermore, the top of charge chamber is equipped with the charge door, charge door department is equipped with the feed door that can open and shut.

Further, the device also comprises a processing chamber communicated between the loading chamber and the combustion chamber, the molten metal in the loading chamber can enter the combustion chamber through the processing chamber, and the high-temperature flue gas in the combustion chamber can enter the loading chamber through the processing chamber.

Furthermore, a first molten metal flow channel is arranged between the processing chamber and the feeding chamber, a second molten metal flow channel is arranged between the processing chamber and the combustion chamber, and the first molten metal flow channel and the second molten metal flow channel have a liquid level difference for driving molten metal to flow from the feeding chamber to the combustion chamber.

Further, a first flue gas flow channel is arranged between the processing chamber and the feeding chamber, a second flue gas flow channel is arranged between the processing chamber and the combustion chamber, and the heights of the first flue gas flow channel and the second flue gas flow channel are higher than the highest liquid level of the molten metal.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a set up charging chamber and combustion chamber, accept flue gas circulating device between charging chamber and the combustion chamber, the charging chamber can hold the raw materials of various specifications, the high temperature flue gas that the combustion chamber produced can enter into the charging chamber, in order to carry out high temperature treatment to the raw materials surface in the charging chamber, thereby decompose the pollutant on raw materials surface, the flue gas that carries the pollutant after decomposing is passed back to the combustion chamber through flue gas circulating device, in order to carry out combustion processing, thereby the preliminary treatment of raw materials has been avoided, energy saving and emission reduction, and the cost is reduced, and because some pollutants can also provide the required material of burning, therefore also can reduce the energy loss of combustion chamber, further reduce the cost; smelting equipment still includes metal liquid circulating device, and the raw materials can get into the combustion chamber at the metal liquid that is in the molten condition among the smelting process, and the combustion chamber can heat it to reinfusion to the charging chamber again through metal liquid circulating device, with the raw materials that erode the unmelted condition, compare in the direct combustion heating raw materials, the raw materials loss is still less, has effectively promoted the rate of recovery.

Drawings

FIG. 1 is a sectional view of the melting apparatus of the present invention in a front view.

FIG. 2 is a cross-sectional view of the melting apparatus of the present invention viewed from above.

FIG. 3 is a side view of the melting apparatus of the present invention.

Fig. 4 is a schematic structural view of fig. 1 with a loading mechanism.

Reference numerals are as follows:

100. a charging chamber; 11. a feed inlet; 12. a charging door; 200. a combustion chamber; 21. burning a nozzle; 300. a flue gas circulating device; 31. a first flue gas duct; 32. a second flue gas duct; 33. a first driving member; 400. a molten metal circulating device; 41. a first molten metal conduit; 42. a second molten metal conduit; 43. a second driving member; 500. a processing chamber; 600. a first partition wall; 61. a first molten metal flow channel; 700. a second partition wall; 71. a second molten metal flow channel; 72. a second flue gas channel; 800. an installation space; 900. a feeding mechanism.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "including" and "having," as well as any variations thereof, in this application are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1 to 4, a recycled metal melting apparatus according to a preferred embodiment of the present invention includes: a charging chamber 100 for accommodating a raw material to be melted; a combustion chamber 200 for providing heat; a flue gas circulating device 300 which is connected between the charging chamber 100 and the combustion chamber 200 and inputs the flue gas in the charging chamber 100 into the combustion chamber 200; and a molten metal circulating device 400 which is received between the charging chamber 100 and the combustion chamber 200 and which feeds the molten metal in the combustion chamber 200 into the charging chamber 100; wherein, the combustion chamber 200 is communicated with the charging chamber 100, the combustion chamber 200 can input high-temperature flue gas into the charging chamber 100, and the charging chamber 100 can input molten metal into the combustion chamber 200.

The utility model discloses a set up charging chamber 100 and combustion chamber 200, accept flue gas circulating device 300 between charging chamber 100 and the combustion chamber 200, charging chamber 100 can hold the raw materials of various specifications, the high temperature flue gas that combustion chamber 200 produced can enter into charging chamber 100, in order to carry out high temperature treatment to the raw materials surface in charging chamber 100, thereby decompose the pollutant on raw materials surface, the flue gas that carries the pollutant after decomposition is reinfused back to combustion chamber 200 through flue gas circulating device 300, in order to carry out combustion processing, thereby the preliminary treatment of raw materials has been avoided, energy saving and emission reduction, and cost is reduced, and because partial pollutant can also provide the required material of burning, consequently also can reduce the energy loss of combustion chamber 200, further reduce cost; smelting equipment still includes molten metal circulating device 400, and the raw materials is in the molten metal of molten condition can get into combustion chamber 200 in the smelting process, and combustion chamber 200 can heat it to reinfuse to charging chamber 100 through molten metal circulating device 400 again, with the raw materials of scouring non-molten condition, compare in direct combustion heating raw materials, the raw materials loss is still less, has effectively promoted the rate of recovery.

Further, the charging chamber 100 extends along the height direction of the melting apparatus so as to increase the volume of the charging chamber 100, and a plurality of raw materials can be placed in the charging chamber 100 in a stacked manner so as to facilitate thermal decomposition and melting. The top of the charging chamber 100 is provided with a charging opening 11, an openable charging door 12 is arranged at the charging opening 11, and raw materials can be fed into the charging chamber 100 from the charging opening 11.

The combustion chamber 200 comprises a burner 21, and a certain distance is reserved between the burner 21 and the bottom of the combustion chamber 200 so as to prevent molten metal flowing into the combustion chamber 200 from the charging chamber 100 from contacting and damaging the burner 21. In this embodiment, the height of the burner 21 is higher than the maximum level of molten metal in the combustion chamber 200. Preferably, the burners 21 are plural in number and arranged side by side. The spraying end of the burner 21 faces the charging chamber 100 and provides a driving force for the high-temperature flue gas to flow to the charging chamber 100.

Further, the flue gas circulating device 300 comprises a first flue gas pipeline 31, a second flue gas pipeline 32 and a first driving member 33, the first flue gas pipeline 31 is communicated with the charging chamber 100, the second flue gas pipeline 32 is communicated with the combustion chamber 200, and the first driving member 33 is connected between the first flue gas pipeline 31 and the second flue gas pipeline 32 and provides a driving force for the flue gas to be transmitted from the first flue gas pipeline 31 to the second flue gas pipeline 32. In this embodiment, the first driving member 33 may be a fan in particular to provide a suction force.

The loading chamber 100 has a flue gas inlet (not shown), and the flue gas inlet and the first flue gas pipe 31 are respectively located at two sides of the loading chamber 100 in the stacking direction of the raw materials, so as to ensure that the raw materials in the entire loading chamber 100 can be effectively pyrolyzed, thereby avoiding dead angles.

In one embodiment, the first flue gas duct 31 is connected at or near the top of the loading chamber 100 and the flue gas inlet is located at or near the bottom of the loading chamber 100 to enable the high temperature flue gas to flow from the bottom of the loading chamber 100 to the top of the loading chamber 100 in the stacking direction of the raw materials under the action of the first driving member 33, thereby ensuring that the raw materials in the entire loading chamber 100 can be effectively pyrolyzed. Admittedly, in other embodiments, also can exchange the position of first flue gas pipeline 31 and flue gas entry each other, the utility model discloses no longer describe herein.

Further, the molten metal circulation device 400 includes a first molten metal line 41, a second molten metal line 42, and a second driving member 43, wherein the first molten metal line 41 is communicated with the charging chamber 100, the second molten metal line 42 is communicated with the combustion chamber 200, and the second driving member 43 is connected between the first molten metal line 41 and the second molten metal line 42 and provides a driving force for the molten metal to be transferred from the second molten metal line 42 to the first molten metal line 41. In the present embodiment, the second driving member 43 may be a circulation pump, and the circulation pump includes a mechanical circulation pump, an electromagnetic circulation pump, a permanent magnet circulation pump, and the like.

Preferably, the first molten metal line 41 is connected to the bottom of the chamber 100 or a position close to the bottom thereof to flush the raw material at the bottom of the chamber 100 for melting, which is advantageous in that the stacked raw material can be gradually lowered in height along with the flushing, and when the raw material in the chamber 100 is lowered to a certain height, the operator can reopen the charging hole 11 and feed the raw material into the chamber 100, thereby achieving continuous and uninterrupted feeding and thus improving the melting efficiency.

Further, as the raw materials can carry impurities which are difficult to be thermally decomposed, dross and bottom slag can exist in molten metal flowing out from the charging chamber 100 during smelting, in order to further improve the cleanliness of the molten metal, the smelting equipment further comprises a processing chamber 500 communicated between the charging chamber 100 and the combustion chamber 200, and the processing chamber 500 is used for carrying out processing on the molten metal smelted from the charging chamber 100 so as to carry out operations such as dross scraping and bottom slag scraping in the molten metal.

The loading chamber 100 and the process chamber 500 are separated by a first partition wall 600, and the process chamber 500 and the combustion chamber 200 are separated by a second partition wall 700. The first partition 600 and the second partition 700 are provided with a plurality of channels for the circulation of flue gas and molten metal, so that the molten metal in the loading chamber 100 can enter the combustion chamber 200 through the processing chamber 500, the high temperature flue gas in the combustion chamber 200 can enter the loading chamber 100 through the processing chamber 500,

specifically, the first partition wall 600 is provided with a first molten metal flow path 61 for communicating the charging chamber 100 with the processing chamber 500, and the second partition wall 700 is provided with a second molten metal flow path 71 for communicating the processing chamber 500 with the combustion chamber 200. The first molten metal flow path 61 and the second molten metal flow path 71 have a level difference for driving the molten metal to flow from the charging chamber 100 to the combustion chamber 200. The first molten metal runner 61 is located at the bottom or a position close to the bottom of the first partition wall 600, and the second molten metal runner 71 is located at the bottom or a position close to the bottom of the second partition wall 700, so that the molten metal level in the smelting equipment is prevented from being too high, and the molten metal in the charging chamber 100 is ensured to flow to the combustion chamber 200 in time.

The first molten metal channel 61 and the second molten metal channel 71 are formed by penetrating along the horizontal direction, so that the molding is facilitated, and the circulation of molten metal is facilitated. The first molten metal flow paths 61 are continuously or intermittently distributed in the longitudinal direction of the first partition wall 600, and the second molten metal flow paths 71 are continuously or intermittently distributed in the longitudinal direction of the second partition wall 700.

As a preferred embodiment, the first molten metal flow path 61 is formed between the first partition wall 600 and the bottom surface of the loading chamber 100, and the height of the bottom surface of the loading chamber 100 is higher than that of the bottom surface of the processing chamber 500, thereby ensuring that the molten metal can completely flow from the loading chamber 100 into the processing chamber 500 and preventing the residue settled on the bottom of the molten metal from accumulating on the bottom of the loading chamber 100. The bottom of the second molten metal flow channel 71 may be slightly higher than the bottom of the processing chamber 500 to prevent the entrance of the residue into the combustion chamber 200, so that the residue is accumulated in the processing chamber 500 to facilitate the residue treatment. The height of the bottom surface of the processing chamber 500 may be equal to or slightly higher than the height of the bottom surface of the combustion chamber 200 to facilitate the flow of molten metal from the processing chamber 500 to the combustion chamber 200.

The first partition wall 600 is provided with a first flue gas flow channel (not shown), the second partition wall 700 is provided with a second flue gas flow channel 72, and the heights of the first flue gas flow channel and the second flue gas flow channel 72 are higher than the highest liquid level of molten metal, so that the molten metal is prevented from flowing into and blocking the first flue gas flow channel and the second flue gas flow channel 72. The first flue gas flow passage and the second flue gas flow passage 72 are formed by penetrating along the horizontal direction. The first flue gas flow passages are continuously or intermittently distributed along the length of the first partition 600, and the second flue gas flow passages 72 are continuously or intermittently distributed along the length of the second partition 700.

As a preferred embodiment, the first flue gas runner is located near the bottom of the smelting apparatus so that the flue gas outlet of the first flue gas runner is near the bottom of the loading chamber 100. The height of the second flue gas channel 72 is consistent with that of the burner 21, and the burner 21 faces the second flue gas channel 72, so that high-temperature flue gas sprayed by the burner 21 can be directly sprayed to the second flue gas channel 72, and the circulation effect of the flue gas is improved. In addition, when the second flue gas flow channel 72 is intermittently distributed along the length direction of the second partition wall 700, the projection of the second flue gas flow channel 72 in the horizontal direction preferably covers the burner 21 so as to prevent the high-temperature flue gas in the burner 21 from being blown onto the second partition wall 700.

Preferably, in order to facilitate the connection of the molten metal circulation device 400, the circumferential side of the combustion chamber 200 is protruded with respect to the process chamber 500 and the loading chamber 100 such that an installation space 800 is formed between the sidewall of the process chamber 500 and/or the loading chamber 100 and the sidewall of the combustion chamber 200, and the molten metal circulation device 400 is externally disposed in the installation space 800.

Further, the melting apparatus further comprises a feeding mechanism 900, the feeding mechanism 900 comprises a taking and placing member (not shown) for taking and placing the raw material, the feeding mechanism 900 can receive the raw material from the ground and transport the raw material to the top of the charging chamber 100, and after the charging door 12 at the top of the charging chamber 100 is opened, the taking and placing member puts the raw material into the charging chamber 100. Since the charging chamber 100 is internally subjected to the pyrolysis operation of the surface of the raw material, when new raw material is input, harmful gas is easily generated and leaked, in order to avoid the above situation, the taking and placing member has a cover body (not shown) which can cover the periphery of the charging opening 11, and when the charging door 12 is opened and the raw material is input, the charging opening 11 is sealed by the cover body, so that the leakage of smoke is avoided.

The utility model discloses the working process is as follows: adding clean metal materials into a combustion chamber 200 before opening the furnace, stacking raw materials to be smelted in a feeding chamber 100, and opening a burner 21 to melt the metal materials; the first driving part 33 is opened, the high-temperature flue gas generated by the combustion chamber 200 sequentially enters the charging chamber 100 through the second flue gas flow channel 72 and the first flue gas flow channel, the oxygen content of the combustion chamber 200 is low, the high-temperature flue gas washes the raw material, the raw material cannot be oxidized, but heat can be brought, so that the coating on the surface of the raw material is decomposed, and meanwhile, the high-temperature flue gas carries the decomposed coating to be re-transmitted to the combustion chamber 200 sequentially through the first flue gas pipeline 31 and the second flue gas pipeline 32; when the metal material is melted to a certain liquid level, the second driving member 43 is started, the second driving member 43 pumps the metal liquid into the feeding chamber 100, so that the metal liquid flushes and transfers heat to the raw material at the bottommost part of the feeding chamber 100, in the process, the raw material is gradually melted and mixed with the original metal liquid, and the mixed metal liquid is sequentially returned to the combustion chamber 200 through the first metal liquid flow channel 61, the treatment chamber 500 and the second metal liquid flow channel 71, and realizes circular flow through the metal liquid circulating device 400; in the process, the combustion chamber 200 can continuously provide heat required by scouring for the molten metal, and an operator can perform process treatment on the molten metal in the treatment chamber 500 to ensure the cleanliness of the molten metal; when the raw material in the charging chamber 100 is lowered to a certain height, the charging door 12 is opened and the raw material is continuously charged into the charging chamber 100, thereby realizing continuous and uninterrupted melting.

The above description is only for the purpose of illustrating embodiments of the present invention and is not intended to limit the scope of the present invention, and all modifications, equivalents, and equivalent structures or equivalent processes that can be used directly or indirectly in other related fields of technology shall be encompassed by the present invention.

Claims (10)

1. A recycled metal remelting plant, comprising:

a charging chamber (100) for accommodating a raw material to be melted;

a combustion chamber (200);

a flue gas circulating device (300) which is received between the charging chamber (100) and the combustion chamber (200) and which feeds the flue gas in the charging chamber (100) into the combustion chamber (200); and

a molten metal circulating device (400) which is received between the charging chamber (100) and the combustion chamber (200) and which feeds molten metal in the combustion chamber (200) into the charging chamber (100);

wherein, the combustion chamber (200) is communicated with the charging chamber (100), the combustion chamber (200) can input high-temperature flue gas into the charging chamber (100), and the charging chamber (100) can input molten metal into the combustion chamber (200).

2. The recycled metal remelting plant according to claim 1, wherein the flue gas recirculation means (300) comprises:

a first flue gas duct (31) communicating with said loading chamber (100);

a second flue gas duct (32) communicating with said combustion chamber (200); and

and the first driving piece (33) is connected between the first flue gas pipeline (31) and the second flue gas pipeline (32) and provides driving force for conveying the flue gas from the first flue gas pipeline (31) to the second flue gas pipeline (32).

3. The recycled metal remelting plant according to claim 2, wherein the raw material is stacked in the charging chamber (100), the charging chamber (100) having a flue gas inlet, and the first flue gas duct (31) and the flue gas inlet are located on either side of the charging chamber (100) in the stacking direction.

4. The recycled metal remelting plant according to claim 2, wherein the combustion chamber (200) comprises a burner (21) and the second flue gas duct (32) is connected to the combustion chamber (200) close to the burner (21).

5. The recycled metal remelting plant according to claim 1, wherein the molten metal circulating means (400) comprises:

a first molten metal conduit (41) communicating with said chamber (100);

a second molten metal conduit (42) communicating with said combustion chamber (200); and

and a second driving member (43) connected between the first molten metal pipe (41) and the second molten metal pipe (42) and providing a driving force for the molten metal to be transferred from the second molten metal pipe (42) to the first molten metal pipe (41).

6. The recycled metal remelting plant according to claim 5, wherein the first molten metal conduit (41) is connected to the bottom of the charging chamber (100) or close to the bottom.

7. The recycled metal remelting plant according to claim 1, wherein the top of the charging chamber (100) is provided with a charging opening (11), and the charging opening (11) is provided with an openable charging door (12).

8. The recycled metal remelting plant according to any one of claims 1 to 7, further comprising a treatment chamber (500) communicating between the charging chamber (100) and the combustion chamber (200), wherein molten metal in the charging chamber (100) can enter the combustion chamber (200) through the treatment chamber (500), and wherein flue gas at high temperature in the combustion chamber (200) can enter the charging chamber (100) through the treatment chamber (500).

9. The recycled metal remelting plant according to claim 8, wherein a first molten metal channel (61) is provided between the processing chamber (500) and the charging chamber (100), a second molten metal channel (71) is provided between the processing chamber (500) and the combustion chamber (200), and the first molten metal channel (61) and the second molten metal channel (71) have a level difference that drives molten metal from the charging chamber (100) to the combustion chamber (200).

10. The recycled metal remelting plant according to claim 8, wherein a first flue gas channel is provided between the processing chamber (500) and the charging chamber (100), a second flue gas channel (72) is provided between the processing chamber (500) and the combustion chamber (200), and the heights of the first flue gas channel and the second flue gas channel (72) are both higher than the highest liquid level of molten metal.

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