Energy-saving and environment-friendly electric furnace device

Abstract

The utility model discloses an energy-saving and environment-friendly electric furnace device which comprises an electric furnace box body and a preheating box body, the preheating box body is arranged below the electric furnace box body, and supporting plates are welded to the two sides of the electric furnace box body and the two sides of the preheating box body respectively. According to the electric furnace waste heat utilization device, the preheating box body, the dust removal box, the high-temperature-resistant draught fan, the air inducing pipe, the exhaust pipe and the air blowing disc are adopted to form an electric furnace waste heat utilization mechanism, and the high-temperature-resistant draught fan is started to promote the dust removal box to absorb high-temperature smoke in the smoke exhaust pipe in a negative pressure state; most smoke particles and harmful substances in the high-temperature smoke are filtered and adsorbed under the action of a filter screen, an activated carbon type inclined filter plate and a horizontal filter plate, so that the clean high-temperature smoke is blown to the preheating box body under the action of a plurality of air holes in the surface of the blowing disc, and hot air preheating treatment of workpieces in the preheating box body is achieved. Compared with an existing electric furnace device, the electric furnace device has the advantages that the requirement for heating the domestic water is met, and meanwhile the workpiece is preheated.

Description

Technical Field

[0001] The utility model relates to the technical field of electric furnaces, in particular to an energy-saving and environment-friendly electric furnace device. Background Art

[0002] An electric furnace is a heating furnace that converts the electrical energy in the furnace into heat to heat the workpiece. Electric furnaces can be divided into resistance furnaces, induction furnaces, arc furnaces, plasma furnaces, electron beam furnaces, etc. Compared with fuel furnaces, electric furnaces have the following advantages: the atmosphere in the furnace is easy to control; materials are heated quickly; the heating temperature is high; the temperature is easy to control; the production process is easier to mechanize and automate; the labor and hygiene conditions are good; the thermal efficiency is high; the product quality is good, and it is more environmentally friendly, which is conducive to alleviating the increasingly serious environmental problems. Electric furnaces are universal heating equipment, and can be divided into box furnaces, tube furnaces, and crucible furnaces according to their appearance.

[0003] After searching, the publication number CN212720846U discloses an energy-saving and environmentally friendly box-type electric furnace, including a box-type electric furnace, the box-type electric furnace includes a base located at the bottom and an electric furnace box installed above the base, the inner wall of the electric furnace box is annularly installed with a heating coil, one end of the heating coil is provided with a water inlet and the other end is provided with a water outlet, the water inlet and the water outlet are located on the side wall of the electric furnace box, and the ends of the water inlet and the water outlet are both installed with a docking mechanism, the docking mechanism includes an extrusion tube sealed with the heating coil and a docking ring fixed to the outer end of the extrusion tube, the outer periphery of the docking ring is provided with a docking groove and the back side is annularly evenly interspersed with a plurality of groups of guide rods, the inner end of the guide rod is fixed on the electric furnace box and the outer side is sleeved with a spring. The utility model designs a device for recovering waste heat from a box-type electric furnace, after the object is processed, water can be passed in and the water is heated by the heating coil in the electric furnace, so that the waste heat inside is fully utilized.

[0004] In the above scheme, water is heated by the heating coil in the electric furnace, so that the internal waste heat can be fully utilized. However, the hot water after waste heat recovery can only be used as domestic water in the workshop, and cannot provide energy supply or compensation for heating the workpiece, so there are deficiencies in practicality.

[0005] To this end, an energy-saving and environment-friendly electric furnace device is proposed, which has the advantages of energy saving, environmental protection, and workpiece preheating treatment, thereby solving the problems in the above-mentioned background technology. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes an energy-saving and environment-friendly electric furnace device.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an energy-saving and environmentally friendly electric furnace device, including an electric furnace box and a preheating box, a preheating box is arranged below the electric furnace box, and support plates are welded on both sides of the electric furnace box and the preheating box, a heating chamber is opened inside the electric furnace box, and a smoke exhaust pipe is arranged on the top of the electric furnace box through the heating chamber, a dust removal box is connected to the surface of the smoke exhaust pipe, and a filter screen is arranged at the connection between the dust removal box and the smoke exhaust pipe, and a filter screen is fixed to the front end surface of the dust removal box by screws. An end cover is provided, and an oblique filter plate and a horizontal filter plate are fixed on the surface of the end cover in sequence from bottom to top, and the oblique filter plate and the horizontal filter plate are inserted and installed in the dust removal box, the top of the dust removal box is connected with a high-temperature resistant fan, and the air outlet of the high-temperature resistant fan is connected with an induced draft duct, one end of the induced draft duct extending to the inside of the preheating box is connected with a blowing disk, two hollow plates are welded on the inner wall of the preheating box corresponding to the blowing disk, and the left side wall of the preheating box is connected with an exhaust pipe, and the exhaust pipe is connected to the external domestic water storage tank through the serpentine coil part.

[0008] As a further description of the above technical solution: the front end surface of the electric furnace box is hinged with an upper box door, the front end surface of the preheating box is hinged with a lower box door, and the upper box door and the lower box door are sealed and connected to the electric furnace box and the preheating box respectively.

[0009] As a further description of the above technical solution: screw holes are provided at the four corners of the surface of the end cover, and a handle is welded at the middle of the end cover.

[0010] As a further description of the above technical solution: two support plates are provided, and the two support plates are symmetrical about the vertical center line of the electric furnace box, and triangular support feet are welded to the separated surfaces at the lower parts of the two support plates.

[0011] As a further description of the above technical solution: the sides of the inclined filter plate and the horizontal filter plate are in contact with the inner wall of the dust removal box, and the inclined filter plate and the horizontal filter plate both use activated carbon filter screens, and the left end of the inclined filter plate extends to the top of the filter screen.

[0012] As a further description of the above technical solution: the preheating box, dust removal box, high temperature resistant fan, air duct, exhaust pipe and blowing plate constitute a waste heat utilization mechanism.

[0013] As a further description of the above technical solution: a plurality of air holes are evenly arranged on a side of the blowing plate facing the hollow plate.

[0014] The utility model has the following beneficial effects:

[0015] In the utility model, a preheating box, a dust removal box, a high-temperature resistant fan, an induced draft pipe, an exhaust pipe and a blowing disk are adopted to form an electric furnace waste heat utilization mechanism. By starting the high-temperature resistant fan, the dust removal box under negative pressure is prompted to absorb the high-temperature flue gas in the exhaust pipe, and then most of the smoke particles and harmful substances in the high-temperature flue gas are filtered and adsorbed under the action of the filter screen and the activated carbon type inclined filter plate and the horizontal filter plate, so that the relatively clean high-temperature flue gas is blown toward the preheating box under the action of a number of wind holes on the surface of the blowing disk, so as to realize hot air preheating treatment of the workpiece in the preheating box, and the excess high-temperature gas is discharged from the exhaust pipe to heat domestic water. Compared with the existing electric furnace device, the workpiece preheating is realized while satisfying the heating of domestic water, which significantly increases the utilization rate of the waste heat of the electric furnace, and further improves the energy-saving and environmental protection effect of the electric furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of an energy-saving and environment-friendly electric furnace device of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of a waste heat utilization mechanism of an energy-saving and environment-friendly electric furnace device of the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the end cover structure of an energy-saving and environment-friendly electric furnace device.

[0019] Legend:

[0020] 1. Electric furnace body; 2. Preheating box body; 3. Support plate; 4. Smoke exhaust pipe; 5. Upper box door; 6. Lower box door; 7. Dust removal box; 8. End cover; 9. High temperature resistant fan; 10. Heating chamber; 11. Air duct; 12. Exhaust pipe; 13. Support foot; 14. Filter screen; 15. Inclined filter plate; 16. Horizontal filter plate; 17. Blowing plate; 18. Hollow plate; 19. Screw hole. DETAILED DESCRIPTION

[0021] 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.

[0022] According to an embodiment of the utility model, an energy-saving and environment-friendly electric furnace device is provided.

[0023] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3As shown, an energy-saving and environment-friendly electric furnace device according to an embodiment of the utility model comprises an electric furnace body 1 and a preheating body 2, the preheating body 2 is arranged below the electric furnace body 1, and support plates 3 are welded on both sides of the electric furnace body 1 and the preheating body 2, a heating chamber 10 is opened inside the electric furnace body 1, and a smoke exhaust pipe 4 is arranged on the top of the electric furnace body 1 through the heating chamber 10, the surface of the smoke exhaust pipe 4 is connected with a dust removal box 7, and a filter screen 14 is arranged at the connection between the dust removal box 7 and the smoke exhaust pipe 4, an end cover 8 is fixed to the front end surface of the dust removal box 7 by screws, and an oblique filter plate 15 and a horizontal filter plate 16 are fixed to the surface of the end cover 8 in sequence from bottom to top, and the oblique filter plate 15 and the horizontal filter plate 16 are both inserted and installed in the dust removal box 7, a high temperature resistant fan 9 is connected to the top of the dust removal box 7, and an air duct 11 is connected to the air outlet of the high temperature resistant fan 9, and the air duct 11 extends to one end inside the preheating body 2 It is connected with a blowing plate 17, and two hollow plates 18 are welded on the inner wall of the preheating box 2 corresponding to the blowing plate 17, and the left wall of the preheating box 2 is connected with an exhaust pipe 12, and the exhaust pipe 12 is connected to the external domestic water storage tank through a serpentine coil part, wherein the exhaust pipe 12 is a serpentine coil structure passing through a storage tank (not shown in the figure) storing domestic water, and the heat in the high-temperature gas is transferred to the domestic water. The high-temperature resistant fan 9 is only used in this patent, and its structure and function are not improved. For those skilled in the art, its setting method, installation method and electrical connection method, as long as they are debugged and operated according to the requirements of its instruction manual, they will not be repeated here, and the high-temperature resistant fan 9 is provided with a control switch matched with it, and the installation position of the control switch is selected according to the actual use requirements, so that the operator can operate and control it conveniently;

[0024] In one embodiment, an upper door 5 is hinged on the front end surface of the electric furnace body 1, and a lower door 6 is hinged on the front end surface of the preheating body 2. The upper door 5 and the lower door 6 are sealed with the electric furnace body 1 and the preheating body 2 respectively. The setting of the upper door 5 and the lower door 6 is helpful to maintain the sealing of the electric furnace body 1 and the preheating body 2.

[0025] In one embodiment, screw holes 19 are provided at the four corners of the surface of the end cover 8, and a handle is welded at the middle of the end cover 8. The screw holes 19 facilitate the installation of the end cover 8 and have the advantage of being detachable.

[0026] In one embodiment, two support plates 3 are provided, and the two support plates 3 are symmetrical about the vertical center line of the electric furnace box 1, and triangular support feet 13 are welded on the separated surfaces at the lower parts of the two support plates 3. The triangular support feet 13 are provided to increase the supporting effect of the device, and the support plates 3 are provided to ensure reliable support of the electric furnace box 1 and the preheating box 2.

[0027] In one embodiment, the sides of the inclined filter plate 15 and the horizontal filter plate 16 are in contact with the inner wall of the dust removal box 7, and the inclined filter plate 15 and the horizontal filter plate 16 both use an activated carbon filter 14. The left end of the inclined filter plate 15 extends to the top of the filter 14. The setting of the activated carbon filter 14 can adsorb smoke particles and harmful substances in the high-temperature flue gas, thereby reducing the situation where a large amount of dust and impurities are attached to the workpiece during the preheating stage.

[0028] In one embodiment, the preheating box 2, the dust removal box 7, the high temperature resistant fan 9, the air duct 11, the exhaust pipe 12 and the blowing plate 17 constitute a waste heat utilization mechanism. Through the setting of the waste heat utilization mechanism, the preheating of the workpiece and the heating of domestic water can be achieved, and the waste heat utilization rate is high.

[0029] In one embodiment, a plurality of air holes are evenly arranged on a side of the blowing plate 17 facing the hollow plate 18 , so that the workpiece of the hollow plate 18 can be preheated by setting the plurality of air holes.

[0030] Working principle:

[0031] When in use, the workpiece to be heated is first stored on the hollow plate 18 of the preheating box 2. When the electric furnace box 1 is working, the high-temperature resistant fan 9 is started to cause the dust removal box 7 under negative pressure to absorb the high-temperature flue gas in the smoke exhaust pipe 4, and then the filter screen 14 and the activated carbon inclined filter plate 15 and the horizontal filter plate 16 filter and adsorb most of the smoke particles and harmful substances in the high-temperature flue gas, so that the relatively clean high-temperature flue gas is blown to the preheating box 2 under the action of a number of air holes on the surface of the blowing plate 17, until the high-temperature gas blows horizontally on the workpiece on the hollow plate 18, so as to realize the hot air preheating treatment of the workpiece in the preheating box 2, and the excess high-temperature gas is led out from the exhaust pipe 12 to heat domestic water (specifically, the exhaust pipe 12 is a serpentine coil structure passing through the storage tank for storing domestic water, and the heat in the high-temperature gas is transferred to the domestic water), and then the tail end flue gas is introduced into the external purification equipment through the air guide device for deep purification treatment until it meets the exhaust gas emission standards.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy-saving and environment-friendly electric furnace device, comprising an electric furnace box (1) and a preheating box (2), characterized in that: A preheating box (2) is arranged below the electric furnace box (1), and support plates (3) are welded to both sides of the electric furnace box (1) and the preheating box (2). A heating chamber (10) is provided inside the electric furnace box (1), and a smoke exhaust pipe (4) is arranged on the top of the electric furnace box (1) to penetrate the heating chamber (10). The surface of the smoke exhaust pipe (4) is connected to a dust removal box (7), and a filter screen (14) is arranged at the connection between the dust removal box (7) and the smoke exhaust pipe (4). An end cover (8) is fixed to the front end surface of the dust removal box (7) by screws, and an inclined filter plate (15) and a horizontal filter screen (14) are fixed to the surface of the end cover (8) in sequence from bottom to top. The filter plate (16) is provided in the preheating box (2), and the inclined filter plate (15) and the horizontal filter plate (16) are inserted into and installed in the dust removal box (7). The top of the dust removal box (7) is connected to a high temperature resistant fan (9), and the air outlet of the high temperature resistant fan (9) is connected to an air duct (11). One end of the air duct (11) extending to the inside of the preheating box (2) is connected to a blowing disk (17). Two hollow plates (18) are welded on the inner wall of the preheating box (2) corresponding to the blowing disk (17). The left side wall of the preheating box (2) is connected to an exhaust pipe (12), and the exhaust pipe (12) is connected to an external domestic water storage tank through a serpentine coil part.

2. The energy-saving and environment-friendly electric furnace device according to claim 1, characterized in that: The front end surface of the electric furnace box (1) is hinged with an upper box door (5), and the front end surface of the preheating box (2) is hinged with a lower box door (6). The upper box door (5) and the lower box door (6) are respectively sealed and connected to the electric furnace box (1) and the preheating box (2).

3. The energy-saving and environment-friendly electric furnace device according to claim 1, characterized in that: Screw holes (19) are provided at four corners of the surface of the end cover (8), and a handle is welded at the middle of the end cover (8).

4. The energy-saving and environment-friendly electric furnace device according to claim 1, characterized in that: Two support plates (3) are provided, and the two support plates (3) are symmetrical about the vertical center line of the electric furnace box (1), and triangular support feet (13) are welded to the separated surfaces at the bottom of the two support plates (3).

5. The energy-saving and environment-friendly electric furnace device according to claim 1, characterized in that: The sides of the inclined filter plate (15) and the horizontal filter plate (16) are in contact with the inner wall of the dust removal box (7), and both the inclined filter plate (15) and the horizontal filter plate (16) use an activated carbon filter screen (14), and the left end of the inclined filter plate (15) extends above the filter screen (14).

6. The energy-saving and environment-friendly electric furnace device according to claim 1, characterized in that: The preheating box (2), the dust removal box (7), the high temperature resistant fan (9), the air duct (11), the exhaust pipe (12) and the blowing plate (17) constitute a waste heat utilization mechanism.

7. The energy-saving and environment-friendly electric furnace device according to claim 1, characterized in that: A plurality of air holes are evenly arranged on one side of the blowing plate (17) facing the hollow plate (18).

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