Energy-saving gas crucible furnace convenient to clean

Abstract

The utility model discloses an energy-saving gas crucible furnace convenient to clean, which relates to the technical field of crucible furnaces and comprises a crucible furnace shell, a plurality of ash cleaning doors are movably mounted on the outer side of the crucible furnace shell, a crucible is fixedly mounted in the crucible furnace shell, a thermocouple is fixedly mounted on one side in the crucible, and the thermocouple is electrically connected with an external main control computer. And a circulating smoke hood is fixedly mounted on one side of the top of the crucible furnace shell. A front air pipe, a flow guide pipe and a combustion pipe are sequentially arranged at the front end of a gas burner fan body, a sealing cover, a flow dividing cover, a flow dividing pipe and a gas outlet nozzle are arranged on the inner side of the flow guide pipe, and meanwhile an acceleration through groove is formed in one side of the gas outlet nozzle and a flow guide plate is synchronously arranged. The high-temperature waste gas exhausted by the crucible furnace shell can be automatically sucked into the combustion pipe by utilizing the wind power of the gas burner fan main body, so that the gas burner fan main body is matched, the gas can be combusted more sufficiently, the combustion temperature is increased, the unit time for melting metal in a crucible is reduced, and the purpose of saving energy is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of crucible furnaces, in particular to an energy-saving gas crucible furnace which is easy to clean. Background Art

[0002] Crucible furnaces are mainly used to melt nonferrous metals with low melting points, such as copper, aluminum and their alloys. They use flames or other heat sources to heat the material in the crucible to melt the metal and remove impurities, thereby obtaining pure metal.

[0003] When the existing gas crucible furnace heats the crucible through the burner, the high-temperature exhaust gas generated in the furnace body will be directly discharged to the external flue gas treatment equipment or the heat of the high-temperature exhaust gas will be recovered through the heat exchanger, but it cannot be effectively utilized in the heating process of the boiler itself. Therefore, the existing Chinese utility model patent disclosed by publication number CN216815013U: an energy-saving gas boiler, which uses a burner to spray flames into the inner cavity to heat the crucible furnace, and the hot flue gas generated returns through the chimney pipe and the chimney head and is sprayed to the crucible furnace to heat the crucible furnace again, thereby improving the heat utilization rate, and through the preheating component, the flue gas is heated to the furnace entering the combustion chamber. The air before the machine is preheated to improve the combustion efficiency and accelerate the melting of aluminum ingots. However, first of all, since the burner of the gas crucible furnace is composed of structures such as the air supply system and the ignition system, when the fan is used to transport air to the burner in this application, if it does not match the air supply volume of the burner's own fan, it will affect the normal operation of the burner. At the same time, the additional fan will also increase additional energy consumption. In addition, in this application, since the external cold air flows at a high speed in the air preheating section pipe, the high-temperature exhaust gas introduced by the chimney pipe and the chimney head cannot effectively and quickly heat up the high-speed flowing air in the air preheating section pipe, which limits the heating conditions and thus cannot improve the combustion efficiency of the burner. Utility Model Content

[0004] The purpose of the utility model is to provide an energy-saving gas crucible furnace that is easy to clean and can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a kind of energy-saving gas crucible furnace convenient to clean, including crucible furnace shell, the multiple ash removal doors of crucible furnace shell outside movable installation, the crucible of fixed installation is installed in the crucible furnace shell, the thermocouple of fixed installation is installed in the crucible one side, and the thermocouple is electrically connected with the main control computer outside, the circulating smoke hood of fixed installation is additionally installed in the crucible furnace shell top side, the first exhaust pipe of fixed installation is installed in the circulating smoke hood front side, the second exhaust pipe of fixed installation is installed in the circulating smoke hood top, the machine box of fixed installation is installed in the crucible furnace shell rear side, the crucible furnace shell in the machine box is provided with gas burner fan main body, the gas burner fan main body is electrically connected with the control computer outside by connecting wire, the front wind pipe of fixed installation is installed in succession in the gas burner fan main body front side, flow guide pipe and combustion pipe, and the combustion pipe is also fixedly installed in the crucible furnace shell rear side.

[0007] Preferably, the first connecting pipe is fixedly installed in the front wind pipe, the second connecting pipe is fixedly connected with the second exhaust pipe at the top of the first connecting pipe, and the high-temperature waste gas discharged from the crucible furnace shell is guided into the flow guide pipe through the first connecting pipe and the second connecting pipe.

[0008] Preferably, the sealing cover is fixedly installed in the inner side of the flow guide pipe, the shunt cover is fixedly installed at the center position in the flow guide pipe, one side of the shunt cover is fixedly connected with one side of the first connecting pipe, the sealing cover and the shunt cover are fixedly connected through a plurality of shunt pipes, and the inner cavities of the sealing cover, the shunt pipe and the shunt cover are in communication.

[0009] Preferably, the burner fan air duct is formed between the two shunt pipes, the high-temperature waste gas discharged from the crucible furnace shell is re-guided into the flow guide pipe through the sealing cover and the shunt cover, so that the gas is burned more fully and the heating efficiency is improved, and the fan of the gas burner fan main body can normally send air into the combustion pipe through the arrangement of the shunt pipe and the burner fan air duct.

[0010] Preferably, a plurality of air outlets are fixedly installed in the sealing cover on one side of the shunt pipe, the acceleration through slot is formed on one side of the air outlet relative to the center line of the flow guide pipe, and the flow guide plate is formed on one side of the acceleration through slot, the waste gas conveyed from the first connecting pipe can be introduced into the combustion pipe through the arrangement of the air outlet, and the wind power blown by the fan of the gas burner fan main body can pass through the acceleration through slot to generate negative pressure in the sealing cover through the arrangement of the acceleration through slot and the flow guide plate, so as to improve the flow speed of the waste gas entering the sealing cover, thereby reducing the energy consumption without additional fan.

[0011] Preferably, the combustion pipe is fixedly provided with a pipe clamp, and a plurality of air pipes are fixedly arranged in the pipe clamp, and the air pipes are arranged to pass through the combustion pipe and extend into the air cover, and the air cover is connected with the external gas supply through a pipeline.

[0012] Compared with the prior art, the utility model has the advantages of:

[0013] The energy-saving gas crucible furnace is convenient to clean, and the plurality of ash removal doors arranged outside the crucible furnace shell can facilitate the cleaning of the dust in the crucible furnace shell and outside the crucible, and the heat conduction efficiency of the crucible is improved.

[0014] The front air pipe, the flow guide pipe and the combustion pipe are sequentially arranged at the front end of the gas burner fan body, the sealing cover, the flow distribution cover, the flow distribution pipe and the air outlet nozzle are arranged in the flow guide pipe, the accelerating groove is arranged on one side of the air outlet nozzle, and the flow guide plate is arranged at the same time, the high-temperature waste gas discharged from the crucible furnace shell can be automatically sucked into the combustion pipe by the wind power of the gas burner fan body, the gas can be burned more fully, the combustion temperature is improved, the unit time of metal melting in the crucible is reduced, and the purpose of energy saving is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of the main structure of the utility model;

[0016] Figure 2 It is a rear view of the main structure of the utility model;

[0017] Figure 3 It is a schematic view of the front air pipe, the flow guide pipe and the combustion pipe structure of the utility model;

[0018] Figure 4 It is a sectional view of the front air pipe of the utility model;

[0019] Figure 5 It is a sectional view of the flow guide pipe of the utility model;

[0020] Figure 6 It is a sectional view of the combustion pipe of the utility model.

[0021] In the figure: 1, the crucible furnace shell; 2, the ash removal door; 3, the crucible; 4, the thermocouple; 5, the circulating smoke cover; 6, the first exhaust pipe; 7, the second exhaust pipe; 8, the machine box; 9, the gas burner fan main body; 10, the front air pipe; 11, the flow guide pipe; 12, the combustion pipe; 13, the gas cover; 14, the first connecting pipe; 15, the second connecting pipe; 16, the sealing cover; 17, the shunt cover; 18, the shunt pipe; 19, the burner fan air duct; 20, the air outlet; 21, the acceleration channel; 22, the flow guide plate; 23, the pipe clamp; 24, the air pipe. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0023] As Figures 1-6 shown, the utility model provides a kind of energy-saving gas crucible furnace convenient to clean, including crucible furnace shell 1, the ash removal door 2 of multiple movable installations is equipped on the outside of crucible furnace shell 1, crucible 3 is fixedly installed in the inside of crucible furnace shell 1, thermocouple 4 is fixedly installed in the inside of crucible 3, and thermocouple 4 is electrically connected with the main control computer outside, circulating smoke cover 5 is also fixedly installed in the top side of crucible furnace shell 1, first exhaust pipe 6 is fixedly installed in the front side of circulating smoke cover 5, second exhaust pipe 7 is fixedly installed in the top of circulating smoke cover 5, machine box 8 is fixedly installed in the rear side of crucible furnace shell 1, the crucible furnace shell 1 in machine box 8 is provided with gas burner fan main body 9, gas burner fan main body 9 is electrically connected with the control computer outside by connecting line, front air pipe 10, flow guide pipe 11 and combustion pipe 12 are fixedly installed in sequence in the front side of gas burner fan main body 9, and combustion pipe 12 is also fixedly installed in the rear side of crucible furnace shell 1.

[0024] As Figures 2-5As shown, the first connecting pipe 14 is fixedly installed in the front wind pipe 10, and the top of the first connecting pipe 14 is fixedly connected with the second exhaust pipe 7 through the second connecting pipe 15. By means of the first connecting pipe 14 and the second connecting pipe 15, a part of the high-temperature exhaust gas discharged from the crucible furnace shell 1 can be guided into the guide pipe 11. The sealing cover 16 is fixedly installed in the inner side of the guide pipe 11. The shunt cover 17 is fixedly installed at the center position of the guide pipe 11. The shunt cover 17 is fixedly connected with one side of the first connecting pipe 14. The sealing cover 16 is fixedly connected with the shunt cover 17 through a plurality of shunt pipes 18. The sealing cover 16 is in communication with the inner cavities of the shunt pipes 18 and the shunt cover 17. The combustion fan air duct 19 is formed between the two shunt pipes 18. By means of the sealing cover 16 and the shunt cover 17, a part of the high-temperature exhaust gas discharged from the crucible furnace shell 1 can be guided into the guide pipe 11, so that the gas combustion is more sufficient and the heating efficiency is improved. The shunt pipes 18 and the combustion fan air duct 19 can ensure that the fan of the gas combustion fan body 9 normally sends air into the combustion pipe 12. The sealing cover 16 fixedly installed on one side of the shunt pipe 18 is provided with a plurality of air outlets 20. The air outlet 20 is provided with an acceleration slot 21 on one side of the center line of the guide pipe 11. The air outlet 20 located on one side of the acceleration slot 21 is also provided with a guide plate 22. By means of the air outlet 20, the exhaust gas conveyed by the first connecting pipe 14 can be introduced into the combustion pipe 12. By means of the acceleration slot 21 and the guide plate 22, the wind power blown by the fan of the gas combustion fan body 9 can pass through the acceleration slot 21 to generate negative pressure in the sealing cover 16, so as to improve the flow speed of the exhaust gas entering the sealing cover 16, thereby reducing the energy consumption without setting an additional fan.

[0025] As shown in Figure 3 , Figure 6 The pipe clamp 23 is fixedly installed in the combustion pipe 12. The gas pipe 24 is fixedly installed in the pipe clamp 23. The gas pipe 24 extends into the gas cover 13 through the combustion pipe 12. The gas cover 13 is connected with the external gas supply through a pipeline. By means of the pipe clamp 23 and the gas pipe 24, the gas can be injected into the crucible furnace shell 1 in cooperation with the gas combustion fan body 9.

[0026] It needs to be explained that the utility model discloses an energy -conserving gas crucible furnace convenient to clean, when starting gas combustor fan main body 9 and the external gas supply equipment of computer through the external controller, the gas that multiple gas pipes 24 in combustion pipe 12 sprays is ignited through ignition system and heats to the crucible 3 in the crucible furnace shell 1, simultaneously, gas combustor fan main body 9 transports air to combustion pipe 12, guarantees the oxygen content when gas burns, simultaneously, when the crucible furnace shell 1 is heated, the high-temperature waste gas that the crucible furnace shell 1 discharges is discharged to the crucible 3 through second exhaust pipe 7, first exhaust pipe 6, can accelerate the metal heating in the crucible 3, simultaneously, since the air that gas combustor fan main body 9 blows into combustion pipe 12 passes through the flow guide pipe 11, the part of air that gas combustor fan main body 9 blows passes through the flow guide plate 22 and is guided into the acceleration channel 21 and re-enters combustion pipe 12 through the side of air outlet 20, at this time, since the air that enters the acceleration channel 21 will extract the air in sealing cover 16 to combustion pipe 12, so that sealing cover 16 cooperates with shunt pipe 18, shunt cover 17 and first connecting pipe 14, second connecting pipe 15 to accelerate the high-temperature waste gas that second exhaust pipe 7 discharges is extracted into combustion pipe 12 and mixes with the air that gas combustor fan main body 9 blows into combustion pipe 12, can improve the temperature of air for gas combustion, help gas and air more fully mix, to promote the complete combustion of gas, can improve the combustion temperature, reduce the loss of chemical incomplete combustion, to effectively save fuel consumption, and need not help additional fan cooperation, reach the purpose of energy saving and consumption reduction.

[0027] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An energy-saving gas-fired crucible furnace that is easy to clean, characterized by: The invention comprises a crucible furnace shell (1), wherein a plurality of ash cleaning doors (2) are movably mounted on the outer side of the crucible furnace shell (1), a crucible (3) is fixedly mounted in the crucible furnace shell (1), a thermocouple (4) is fixedly mounted on one side of the crucible (3), and the thermocouple (4) is electrically connected to an external main control computer, a circulating smoke hood (5) is also fixedly mounted on one side of the top of the crucible furnace shell (1), a first exhaust pipe (6) is fixedly mounted on the front side of the circulating smoke hood (5), a second exhaust pipe (7) is fixedly mounted on the top of the circulating smoke hood (5), and an engine box (8) is fixedly mounted on the rear side of the crucible furnace shell (1); The crucible furnace shell (1) located in the chassis (8) is provided with a gas burner blower body (9), and the gas burner blower body (9) is electrically connected to an external control computer through a connecting line. The front side of the gas burner blower body (9) is fixedly installed with a front air duct (10), a guide pipe (11) and a combustion tube (12) in sequence, and the combustion tube (12) is also fixedly installed on the rear side of the crucible furnace shell (1).

2. The energy-saving gas-fired crucible furnace that is easy to clean according to claim 1, characterized in that: A first connecting pipe (14) is fixedly installed in the front air duct (10), and the top of the first connecting pipe (14) is fixedly connected to the second exhaust pipe (7) via a second connecting pipe (15).

3. The energy-saving gas-fired crucible furnace that is easy to clean according to claim 2, characterized in that: A sealing cover (16) is fixedly installed on the inner side of the guide tube (11), and a diverter cover (17) is fixedly installed at the center position of the guide tube (11). One side of the diverter cover (17) is fixedly connected to one side of the first connecting tube (14). The sealing cover (16) and the diverter cover (17) are fixedly connected via a plurality of diverter tubes (18), and the sealing cover (16) is in communication with the diverter tubes (18) and the inner cavity of the diverter cover (17).

4. The energy-saving gas-fired crucible furnace that is easy to clean according to claim 3, characterized in that: A burner blower air duct (19) is formed between the two diversion pipes (18).

5. The energy-saving gas-fired crucible furnace that is easy to clean according to claim 4, characterized in that: A plurality of air outlet nozzles (20) are fixedly mounted on the sealing cover (16) located on one side of the diversion pipe (18). The air outlet nozzles (20) are provided with an acceleration slot (21) on one side relative to the center line of the guide pipe (11). The air outlet nozzles (20) located on one side of the acceleration slot (21) are also provided with a guide plate (22).

6. The energy-saving gas-fired crucible furnace that is easy to clean according to claim 1, characterized in that: A pipe clamp (23) is fixedly installed in the combustion tube (12), and a plurality of air pipes (24) are fixedly installed in the pipe clamp (23). The air pipes (24) pass through the combustion tube (12) at one end away from the pipe clamp (23) and extend into the air hood (13). The outside of the air hood (13) is connected to an external air supply device through a pipeline.

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