Metal smelting furnace with waste heat utilization function

Abstract

The utility model discloses a metal smelting furnace with a waste heat utilization function. The metal smelting furnace comprises a smelting furnace and a waste heat recovery mechanism, an L-shaped mounting base is arranged on the lower side of the smelting furnace, a cover body is hinged to the rear end of the upper side of the smelting furnace through a pin shaft, a heat exchange box is arranged on the rear side face of the L-shaped mounting base, a control switch group is arranged outside the metal smelting furnace, the input end of the control switch group is electrically connected with an external power source, and the input end of the smelting furnace is electrically connected with the output end of the control switch group; the waste heat recovery mechanism comprises isolation plates, heat exchange coiled pipes, a smoke guide hopper and a smoke guide hose, the isolation plates are evenly arranged in the heat exchange box, the heat exchange coiled pipes are evenly distributed in the heat exchange box, water inlets of the heat exchange coiled pipes are externally connected with external water supply equipment, the smoke guide hopper is arranged on the upper surface of the cover body, and the smoke guide hose is arranged on the upper surface of the cover body. According to the metal smelting furnace with the waste heat utilization function, resource waste caused by the fact that high-heat gas generated by smelting is directly exhausted is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of metal smelting, in particular to a metal smelting furnace with a waste heat utilization function. Background Art

[0002] A smelting furnace refers to a furnace for melting metal ores. An electric furnace is a smelting furnace that uses the electric heating effect to provide heat. It is mainly used for the smelting, heating and heat treatment of steel, ferroalloys, non-ferrous metals, etc. In the smelting of non-ferrous metals, the electric furnace is both a smelting equipment and is used to further process the smelted products.

[0003] According to a metal smelting furnace disclosed in CN201811525919.7, it includes a box body; it also includes a crushing unit, a feeding unit, a smelting chamber, a motor, a collecting box, a No. 1 pipe, a purification unit and a controller. The motor is used to drive the crushing barrel to rotate, and the No. 2 crushing teeth cooperate with the spiral groove to make the rotating wheel rotate, and the crushing barrel and the No. 2 crushing teeth cooperate to crush the metal; at the same time, the collision between the crushing balls is used to smash the metal, and the gas generated by the extrusion of the elliptical chamber acts on the No. 1 cylinder, so that the No. 2 crushing teeth that are not engaged with the spiral groove rotate, and the No. 1 crushing teeth cooperate with the No. 2 crushing teeth to crush the metal; by crushing, smashing and crushing the metal, the metal is fully crushed, so that the crushed metal is fully smelted in the smelting chamber, thereby improving the metal smelting effect.

[0004] The above disclosed metal smelting furnace has no waste heat recovery function, and a large amount of high-temperature airflow is directly discharged, causing waste of resources and polluting the environment. Therefore, we propose a metal smelting furnace with waste heat utilization function. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a metal smelting furnace with waste heat utilization function to prevent the waste of resources caused by direct discharge of high-temperature gases generated by smelting, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a metal smelting furnace with waste heat utilization function, comprising a smelting furnace and a waste heat recovery mechanism;

[0007] Smelting furnace: an L-shaped mounting base is provided on the lower side thereof, a cover body is hingedly connected to the upper rear end of the smelting furnace through a pin shaft, a heat exchange box is provided on the rear side of the L-shaped mounting base, a control switch group is provided on the outside of the metal smelting furnace, the input end of the control switch group is electrically connected to the external power supply, and the input end of the smelting furnace is electrically connected to the output end of the control switch group;

[0008] Residual heat recovery mechanism: it includes an insulating plate, a heat exchange serpentine tube, a smoke guide pipe and a smoke guide hose. The insulating plate is evenly arranged inside the heat exchange box. The interior of the heat exchange box is provided with evenly distributed heat exchange serpentine tubes. The water inlet of the heat exchange serpentine tube is connected to an external water supply device. A smoke guide pipe is provided on the upper surface of the cover body. A smoke guide hose is provided at the upper end of the smoke guide pipe. The lower end of the smoke guide hose is connected to the lower side of the heat exchange box to prevent the waste of resources caused by the direct discharge of high-temperature gases generated by smelting.

[0009] Furthermore, it also includes a switch handle, which is respectively arranged on the left and right sides of the outer arc surface of the cover body to realize the function of opening and closing the cover body.

[0010] Furthermore, the residual heat recovery mechanism also includes an insulation board and an exhaust fan. The insulation board is arranged on the upper surface of the heat exchange box. The middle part of the smoke guiding hose is connected in series with an insulation exhaust fan. The lower end of the exhaust fan is fixedly connected to the upper surface of the insulation board. The input end of the exhaust fan is electrically connected to the output end of the control switch group to realize the function of guiding high-temperature gas.

[0011] Furthermore, the residual heat recovery mechanism also includes a slag removal trough and a slag discharge drawer. The slag removal trough is evenly arranged on the right side of the heat exchange box. The interior of the slag removal trough is slidably connected with a slag discharge drawer to achieve the function of removing ash and slag.

[0012] Furthermore, it also includes a circulation pump, which is arranged on the lower side of the rear side of the L-shaped mounting base. The water outlet ends of the three heat exchange serpentine tubes are connected to the water inlet end of the circulation pump. The water outlet end of the circulation pump is externally connected to an external hot water collection device, and the input end of the circulation pump is electrically connected to the output end of the control switch group to achieve circulation.

[0013] Furthermore, it also includes a smoke outlet pipe, which is arranged on the upper side of the rear side of the heat exchange box.

[0014] Furthermore, it also includes a discharge port, which is opened on the front side of the outer arc surface of the smelting furnace.

[0015] Furthermore, it also includes supporting feet, which are respectively arranged at the four corners of the bottom surface of the L-shaped mounting base to achieve the supporting function.

[0016] Compared with the prior art, the beneficial effects of the utility model are: the metal smelting furnace with waste heat utilization function has the following advantages:

[0017] By installing a heat exchange coil, the high-temperature gas generated by the hot melt inside the smelting furnace passes through the heat exchange box to heat the cold water inside the heat exchange coil, which is heated into hot water and then discharged to the outside of the smelting furnace. The high-temperature gas after heating the heat exchange coil will be cooled and then discharged to the outside through the smoke outlet pipe. By installing a waste heat recovery mechanism, the waste of resources caused by the direct discharge of the high-temperature gas generated by smelting can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a rear view structural diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the residual heat recovery mechanism of the utility model.

[0021] In the figure: 1 smelting furnace, 2 cover body, 3 discharge port, 4 heat exchange box, 5 residual heat recovery mechanism, 51 insulation plate, 52 heat exchange serpentine pipe, 53 smoke guide pipe, 54 smoke guide hose, 55 insulation board, 56 exhaust fan, 57 slag removal trough, 58 slag drawer, 6 circulation pump, 7 smoke outlet pipe, 8 support legs, 9 control switch group. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 , this embodiment provides a technical solution: a metal smelting furnace with waste heat utilization function, including a smelting furnace 1 and a waste heat recovery mechanism 5;

[0024] Smelting furnace 1: an L-shaped mounting base is provided on its lower side, a cover body 2 is hingedly connected to the upper rear end of the smelting furnace 1 through a pin shaft, a heat exchange box 4 is provided on the rear side of the L-shaped mounting base, a control switch group 9 is provided on the outside of the metal smelting furnace, an input end of the control switch group 9 is electrically connected to an external power supply, and an input end of the smelting furnace 1 is electrically connected to an output end of the control switch group 9, and also includes a switch handle, which is respectively arranged on the left and right sides of the outer arc surface of the cover body 2, and also includes a discharge port 3, which is opened on the front side of the outer arc surface of the smelting furnace 1, and also includes legs 8, which are respectively arranged at the four corners of the bottom surface of the L-shaped mounting base. Before the waste heat recovery operation of the metal smelting furnace is required, metal raw materials are added to the metal smelting furnace, and a specified amount of molten liquid is added therein, at this time, the control switch group 9 is adjusted, the smelting furnace 1 is operated, and the metal raw materials inside it are melted, and the cover body 2 can be closed at this time;

[0025] Residual heat recovery mechanism 5: It includes an isolation plate 51, a heat exchange serpentine tube 52, a smoke guide duct 53 and a smoke guide hose 54. The isolation plate 51 is evenly arranged inside the heat exchange box 4. The heat exchange box 4 is provided with evenly distributed heat exchange serpentine tubes 52. The water inlet of the heat exchange serpentine tube 52 is connected to an external water supply device. The upper surface of the cover body 2 is provided with a smoke guide duct 53. The upper end of the smoke guide duct 53 is provided with a smoke guide hose 54. The lower end of the smoke guide hose 54 is connected to the lower side of the heat exchange box 4. The material of the isolation plate 51 is STP vacuum plate material. The heat is blocked by the hollow layer in the middle of the vacuum plate and will not extend to the exhaust pipe. The exhaust fan 56 goes up, the residual heat recovery mechanism 5 also includes a heat insulation board 55 and an exhaust fan 56, the heat insulation board 55 is arranged on the upper surface of the heat exchange box 4, the middle part of the smoke guide hose 54 is connected in series with an insulated exhaust fan 56, the lower end of the exhaust fan 56 is fixedly connected to the upper surface of the heat insulation board 55, the input end of the exhaust fan 56 is electrically connected to the output end of the control switch group 9, the residual heat recovery mechanism 5 also includes a slag removal tank 57 and a slag discharge drawer 58, the slag removal tank 57 is evenly arranged on the right side of the heat exchange box 4, the interior of the slag removal tank 57 is slidably connected to the slag discharge drawer 58, and also includes a circulation pump 6, which is arranged at On the lower side of the rear side of the L-shaped mounting base, the water outlet ends of the three heat exchange serpentine tubes 52 are connected to the water inlet end of the circulation pump 6, the water outlet end of the circulation pump 6 is externally connected to an external hot water collection device, and the input end of the circulation pump 6 is electrically connected to the output end of the control switch group 9, and also includes a smoke outlet pipe 7, which is arranged on the upper side of the rear side of the heat exchange box 4. At this time, the control switch group 9 can be regulated to operate the exhaust fan 56 to suck the high-temperature gas generated by the melting of the smelting furnace 1 into the interior of the heat exchange box 4 along the smoke guide hose 54. At this time, these high-temperature air flows along the guide of the isolation plate 51 inside the heat exchange box 4, and successively to The water flows upward and flows upward in the heat exchange box 4 until it is discharged from the smoke outlet pipe 7 to the outside of the device. During this period, the external water supply equipment can be adjusted, and the cold water enters the middle part of the heat exchange serpentine tube 52. When the heat exchange serpentine tube 52 runs to the middle part, the cold water in the middle part of the heat exchange serpentine tube 52 is heated by the high-temperature gas into hot water. At this time, the control switch group 9 can be adjusted to operate the circulation pump 6. The circulation pump 6 extracts the hot water in the middle part of the three heat exchange serpentine tubes 52 and discharges the hot water to the external hot water collection equipment, and then repeats the above operation to continuously extract hot water. At this time, the hot water can be used to complete the residual heat recovery operation.

[0026] The working principle of a metal smelting furnace with waste heat utilization function provided by the utility model is as follows: before the waste heat recovery operation of the metal smelting furnace is required, metal raw materials are added to the metal smelting furnace, and a specified amount of molten liquid is added thereto. At this time, the control switch group 9 is adjusted, and the smelting furnace 1 is operated to melt the metal raw materials inside it. At this time, the cover body 2 can be closed. At this time, the control switch group 9 can be adjusted, and the exhaust fan 56 is operated to suck the high-temperature gas generated by the melting of the smelting furnace 1 into the interior of the heat exchange box 4 along the smoke guide hose 54. At this time, these high-temperature air flows are guided by the isolation plate 51 inside the heat exchange box 4, and flow upward in sequence and upward in the heat exchange box 4 until they are discharged from the smoke outlet pipe 7 to the outside of the device. During this period, the external water supply equipment can be regulated, and cold water enters the middle part of the heat exchange serpentine tube 52. When the heat exchange serpentine tube 52 runs to the middle part, the cold water in the middle part of the heat exchange serpentine tube 52 is heated to hot water by the high-temperature gas. At this time, the control switch group 9 can be regulated, and the circulation pump 6 is operated. The circulation pump 6 extracts the hot water in the middle part of the three heat exchange serpentine tubes 52 and discharges the hot water to the external hot water collection equipment, and then repeats the above operation to continuously extract hot water. At this time, the hot water can be used to complete the residual heat recovery operation. The debris generated by the high-temperature airflow falls into the slag drawer 58 in the slag removal tank 57. After the large particles in the slag drawer 58 are full, the slag drawer 58 can be extracted and the dust in the slag drawer 58 is poured out.

[0027] It is worth noting that the exhaust fan 56 and the circulation pump 6 disclosed in the above embodiments can be freely configured according to the actual application scenario. It is recommended to use LC-corrosion-resistant, high-temperature and high-pressure exhaust fan for the exhaust fan 56, and it is recommended to use CPS-10 centrifugal stainless steel hot water circulation pump for the circulation pump 6. The control switch group 9 is provided with control buttons which correspond one-to-one to the exhaust fan 56 and the circulation pump 6 and are used to control their switches.

[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A metal smelting furnace with waste heat utilization function, characterized in that: It comprises a smelting furnace (1) and a waste heat recovery mechanism (5); A smelting furnace (1): an L-shaped mounting base is provided on its lower side, a cover body (2) is hingedly connected to the upper rear end of the smelting furnace (1) through a pin shaft, a heat exchange box (4) is provided on the rear side of the L-shaped mounting base, a control switch group (9) is provided outside the metal smelting furnace, an input end of the control switch group (9) is electrically connected to an external power supply, and an input end of the smelting furnace (1) is electrically connected to an output end of the control switch group (9); The residual heat recovery mechanism (5) comprises an insulating plate (51), a heat exchange serpentine tube (52), a smoke guide pipe (53) and a smoke guide hose (54), wherein the insulating plate (51) is evenly arranged inside the heat exchange box (4), the heat exchange serpentine tube (52) is evenly distributed inside the heat exchange box (4), the water inlet of the heat exchange serpentine tube (52) is externally connected to an external water supply device, the upper surface of the cover body (2) is provided with a smoke guide pipe (53), the upper end of the smoke guide pipe (53) is provided with a smoke guide hose (54), and the lower end of the smoke guide hose (54) is connected to the lower side of the heat exchange box (4).

2. The metal smelting furnace with waste heat utilization function according to claim 1, characterized in that: It also comprises a switch handle, which is respectively arranged on the left and right sides of the outer arc surface of the cover body (2).

3. The metal smelting furnace with waste heat utilization function according to claim 1, characterized in that: The residual heat recovery mechanism (5) also includes a heat insulation board (55) and an exhaust fan (56), wherein the heat insulation board (55) is arranged on the upper surface of the heat exchange box (4), and the middle part of the smoke guide hose (54) is connected in series with the heat insulation exhaust fan (56), the lower end of the exhaust fan (56) is fixedly connected to the upper surface of the heat insulation board (55), and the input end of the exhaust fan (56) is electrically connected to the output end of the control switch group (9).

4. The metal smelting furnace with waste heat utilization function according to claim 1, characterized in that: The residual heat recovery mechanism (5) further comprises a slag removal trough (57) and a slag discharge drawer (58); the slag removal trough (57) is evenly arranged on the right side of the heat exchange box (4); and the interior of the slag removal trough (57) is slidably connected to the slag discharge drawer (58).

5. The metal smelting furnace with waste heat utilization function according to claim 1, characterized in that: It also includes a circulation pump (6), which is arranged on the lower side of the rear side of the L-shaped mounting base, the water outlet ends of the three heat exchange serpentine tubes (52) are connected to the water inlet end of the circulation pump (6), the water outlet end of the circulation pump (6) is externally connected to an external hot water collection device, and the input end of the circulation pump (6) is electrically connected to the output end of the control switch group (9).

6. The metal smelting furnace with waste heat utilization function according to claim 1, characterized in that: It also comprises a smoke outlet pipe (7), wherein the smoke outlet pipe (7) is arranged on the upper side of the rear side of the heat exchange box (4).

7. The metal smelting furnace with waste heat utilization function according to claim 1, characterized in that: It also comprises a discharge port (3), wherein the discharge port (3) is opened on the front side of the outer arc surface of the smelting furnace (1).

8. The metal smelting furnace with waste heat utilization function according to claim 1, characterized in that: It also includes supporting feet (8), which are respectively arranged at the four corners of the bottom surface of the L-shaped installation base.

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