CN110953884A

CN110953884A - Quick energy-concerving and environment-protective metal melting furnace

Info

Publication number: CN110953884A
Application number: CN201911310937.8A
Authority: CN
Inventors: 李丹丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-04-03

Abstract

The invention discloses a quick energy-saving environment-friendly metal melting furnace, belonging to the field of metal melting furnaces, and comprising a furnace body, a furnace cover, a crucible and a heating element; the furnace body comprises an upper furnace body and a lower furnace body; the crucible comprises a heat-insulating layer, a supporting block, a crucible bottom plate and a molybdenum supporting plate; the furnace cover is provided with a sundry discharging hole, the outer part of the furnace cover is provided with an exhaust pipe, the exhaust pipe is connected with an exhaust fan, and the output end of the exhaust fan is connected with a purifying device; the heat-insulating layer comprises an outer heat-insulating layer, an inner heat-insulating layer, a molybdenum plate, a carbon-carbon screw and a nut; the carbon-carbon screw rod penetrates through the molybdenum supporting plate, the inner heat-insulating layer, the molybdenum plate and the outer heat-insulating layer in sequence and then is fixedly connected with the nut. According to the rapid energy-saving environment-friendly metal melting furnace, the heat preservation layer is arranged, so that heat can be effectively prevented from being transferred to the shell on the outer surface of the furnace body along the crucible, the heat utilization efficiency is improved, the power consumption is reduced, the energy-saving and consumption-reducing effects are obvious, and meanwhile, impurities can be filtered and purified, so that the energy-saving environment-friendly effect is realized.

Description

Quick energy-concerving and environment-protective metal melting furnace

Technical Field

The invention relates to the field of metal melting furnaces, in particular to a quick energy-saving environment-friendly metal melting furnace.

Background

At present, when a die-casting enterprise produces die-casting products, aluminum ingots, zinc ingots and the like are often required to be melted, an electric melting furnace is the most commonly used device, an existing electric melting furnace usually adopts a cast iron crucible as a melting container, the cast iron crucible can be used as a container of liquid aluminum and is a direct heated carrier, a heating element in a furnace cavity works to generate heat, then effective heat is conducted to the cast iron crucible through radiation, and then the cast iron crucible conducts to an object to be melted in the crucible, so that the purpose of melting is achieved. However, the electric melting furnaces in the prior art all use the crucible with the skirt edge at the upper opening, the skirt edge is used for hanging the crucible on the furnace body shell, and the skirt edge does not help the melting of the object to be melted because the area of the skirt edge occupies a considerable part of the effective heating area of the crucible, thereby causing heat dissipation; furthermore, the skirt can conduct heat to the metal shell of the electric melting furnace, and the metal shell is in direct contact with air, so that large-area radiation emission of heat to the air is caused. Therefore, the prior art electric melting furnace has low thermal efficiency; the electric melting furnace is in a closed state in an operation project, carbon monoxide and sulfur dioxide in fuel gas have great pollution to the environment, the electric melting furnace is not beneficial to environmental protection, the heat efficiency is low, and the discharged dust and peroxide pollute the atmospheric environment. Therefore, effective solutions to solve the above problems need to be proposed.

Disclosure of Invention

In order to overcome the defects of the prior art, the heat preservation layer is arranged, so that heat can be effectively prevented from being transferred to the shell on the outer surface of the furnace body along the crucible, the heat utilization efficiency is improved, the power consumption is reduced, the energy-saving and consumption-reducing effects are obvious, and meanwhile, impurities can be filtered and purified, so that the energy-saving and environment-friendly effects are realized.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a rapid energy-saving environment-friendly metal melting furnace which comprises a furnace body, a furnace cover, a crucible and a heating element, wherein the furnace cover is used for covering the furnace body and is fixedly connected with the upper end of the furnace body; the furnace body comprises an upper furnace body and a lower furnace body fixedly connected with the upper furnace body;

the crucible furnace further comprises a heat insulation layer positioned in the upper furnace body, a supporting block positioned in the upper furnace body and fixedly arranged at the bottom of the upper furnace body, a crucible bottom plate positioned in the upper furnace body and used for supporting the crucible, and a molybdenum supporting plate fixedly connected with the periphery of the inner wall of the upper furnace body and used for connecting the heating element;

the upper end surface of the molybdenum supporting plate is connected with the inner wall of the upper end of the upper furnace body, the lower end surface of the molybdenum supporting plate is connected with the inner wall of the lower end of the upper furnace body, one side of the molybdenum supporting plate, which is close to the crucible, is connected with a heating element, and the heating element is fixedly connected with the molybdenum supporting plate through a bolt; the heating elements are symmetrically arranged on the periphery of the outer part of the crucible, the heat insulation layer of the heating elements is positioned between the inner wall of the upper furnace body and the molybdenum support plate, one end surface of the heat insulation layer is fixedly attached to the inner wall of the upper furnace body, and the other end surface of the heat insulation layer is fixedly attached to one end of the molybdenum support plate; the crucible bottom plate is positioned between the crucible and the supporting block, the lower end face of the crucible bottom plate is fixedly attached to the upper end face of the supporting block, and the upper end face of the crucible bottom plate is fixedly attached to the lower end face of the crucible;

the furnace cover is provided with a sundry discharging hole, an exhaust pipe communicated with the sundry discharging hole is arranged outside the furnace cover, the exhaust pipe is connected with an exhaust fan, and the output end of the exhaust fan is connected with a purifying device;

the heat-insulating layer comprises an outer heat-insulating layer, an inner heat-insulating layer, a molybdenum plate, a carbon-carbon screw and a nut;

a hollow layer is arranged between the outer heat-insulating layer and the inner heat-insulating layer, the molybdenum plate is arranged in the hollow layer, through holes for the carbon-carbon screws to pass through are formed in the molybdenum plate and the molybdenum supporting plate, and the carbon-carbon screws are fixedly connected with the nuts after sequentially passing through the outer heat-insulating layer, the molybdenum plate, the inner heat-insulating layer and the molybdenum supporting plate.

Optionally, the outer insulation layer comprises a first outer insulation layer and a second outer insulation layer;

the inner heat-insulating layer comprises a first inner heat-insulating layer and a second inner heat-insulating layer;

the first outer heat-insulating layer and the second outer heat-insulating layer are combined to form a first splicing seam; the first inner heat-insulating layer and the second inner heat-insulating layer are combined to form a second abutted seam; the first splicing seam and the second splicing seam are arranged in a staggered mode.

Optionally, the supporting block comprises a protruding part and a bottom supporting part connected with the protruding part, and the lower end surface of the bottom supporting part is fixedly attached to the inner wall of the bottom of the upper furnace body; the crucible bottom plate is characterized in that a heat preservation felt is arranged on the periphery of the protruding portion, the lower end face of the heat preservation felt is fixedly attached to the upper end face of the bottom supporting portion, and the upper end face of the heat preservation felt is fixedly attached to the lower end face of the crucible bottom plate.

Optionally, the outer dimensions of the upper and lower end surfaces of the crucible bottom plate are larger than the outer dimensions of the bottom end surface of the crucible and the upper end surface of the boss of the support block.

Optionally, heat preservation cotton matched with the inner cavity in shape is laid in the inner cavity of the lower furnace body.

The invention has the beneficial effects that:

according to the rapid energy-saving environment-friendly metal melting furnace, the heat preservation layer is arranged, so that heat can be effectively prevented from being transferred to the shell on the outer surface of the furnace body along the crucible, the heat utilization efficiency is improved, the power consumption is reduced, the energy-saving and consumption-reducing effects are obvious, and meanwhile, impurities can be filtered and purified, so that the energy-saving environment-friendly effect is realized.

Drawings

FIG. 1 is a schematic structural diagram of a rapid energy-saving and environment-friendly metal melting furnace provided by an embodiment of the invention;

fig. 2 is a schematic structural view of an insulation layer according to an embodiment of the present invention.

In the figure:

1. a furnace body; 2. a furnace cover; 3. a crucible; 4. a heating member; 5. a heat-insulating layer; 6. a support block; 7. a crucible bottom plate; 8. a molybdenum pallet; 9. a heat preservation felt; 10. an exhaust pipe; 11. an upper furnace body; 12. a lower furnace body; 13. an exhaust fan; 14. a purification device; 15. a first splice seam; 16. a second abutted seam; 18. heat preservation cotton; 21. impurity removal holes; 51. an outer insulating layer; 52. an inner insulating layer; 53. a molybdenum plate; 54. a carbon-carbon screw; 55. a nut; 61. a boss portion; 62. a support portion; 511. a first outer insulating layer; 512. a second outer insulating layer; 521. a first inner insulating layer; 522. a second inner insulating layer.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1-2, a fast energy-saving and environment-friendly metal melting furnace comprises a furnace body 1, a furnace cover 2 for covering the furnace body 1 and fixedly connected with the upper end of the furnace body 1, a crucible 3 positioned in the furnace body 1, and a heating element 4 for heating metal in the crucible 3; the furnace body 1 comprises an upper furnace body 11 and a lower furnace body 12 fixedly connected with the upper furnace body 11; the crucible furnace also comprises a heat-insulating layer 5 positioned in the upper furnace body 11, a supporting block 6 positioned in the upper furnace body 1 and fixedly arranged at the bottom of the upper furnace body 1, a crucible bottom plate 7 positioned in the upper furnace body 1 and used for supporting the crucible 3, and a molybdenum supporting plate 8 fixedly connected with the periphery of the inner wall of the upper furnace body 11 and used for connecting a heating element 4; the upper end surface of the molybdenum supporting plate 8 is connected with the inner wall of the upper end of the upper furnace body 11, the lower end surface of the molybdenum supporting plate 8 is connected with the inner wall of the lower end of the upper furnace body 11, one side of the molybdenum supporting plate 8, which is close to the crucible 3, is connected with a heating element 4, and the heating element 4 is fixedly connected with the molybdenum supporting plate 8 through bolts; the heating elements 4 are symmetrically arranged on the periphery of the outer part of the crucible 3, the heat insulation layer 5 of the heating elements 4 is positioned between the inner wall of the upper furnace body 11 and the molybdenum supporting plate 8, one end surface of the heat insulation layer 5 is fixedly attached to the inner wall of the upper furnace body 11, and the other end surface of the heat insulation layer 5 is fixedly attached to one end of the molybdenum supporting plate 8; the crucible bottom plate 7 is positioned between the crucible 3 and the supporting block 6, the lower end face of the crucible bottom plate 7 is fixedly attached to the upper end face of the supporting block 6, and the upper end face of the crucible bottom plate 7 is fixedly attached to the lower end face of the crucible 3; the furnace cover 2 is provided with an impurity discharging hole 21, the outer part of the furnace cover 2 is provided with an exhaust pipe 10 communicated with the impurity discharging hole 21, the exhaust pipe 10 is connected with an exhaust fan 13, and the output end of the exhaust fan 13 is connected with a purifying device 14; the heat insulation layer 5 comprises an outer heat insulation layer 51, an inner heat insulation layer 52, a molybdenum plate 53, a carbon-carbon screw 54 and a nut 55; a hollow layer 56 is arranged between the outer heat-insulating layer 51 and the inner heat-insulating layer 52, the molybdenum plate 53 is arranged in the hollow layer 56, through holes for the carbon-carbon screw rods 54 to pass through are arranged on the molybdenum plate 53 and the molybdenum supporting plate 8, and the carbon-carbon screw rods 54 sequentially pass through the outer heat-insulating layer 51, the molybdenum plate 53, the inner heat-insulating layer 52 and the molybdenum supporting plate 8 and then are fixedly connected with the nuts 55.

In the above implementation, specifically, the furnace body 1 is covered with the furnace cover 2, so that a sealed cavity is formed inside the furnace body 1, the crucible 3 is placed in the cavity, the bottom of the crucible 3 is provided with the crucible bottom plate 7 for supporting the crucible 3, the supporting block 6 is arranged below the crucible bottom plate 7, the crucible 3 is arranged inside the upper furnace body 1 and directly placed on the crucible bottom plate 7 and stands in the upper furnace body 11, and therefore, a skirt edge for suspension does not need to be arranged at the upper part of the crucible 3, materials required for manufacturing the crucible 3 are reduced, and the manufacturing cost is reduced; in addition, the upper end surface of the molybdenum supporting plate 8 is connected with the inner wall of the upper end of the upper furnace body 11, the lower end surface of the molybdenum supporting plate 8 is connected with the inner wall of the lower end of the upper furnace body 11, one side of the molybdenum supporting plate 8, which is close to the crucible 3, is connected with a heating element 4, and the heating element 4 is fixedly connected with the molybdenum supporting plate 8 through bolts; the heating elements 4 are symmetrically arranged on the periphery of the outer part of the crucible 3, the heat insulation layer 5 of the heating elements 4 is positioned between the inner wall of the upper furnace body 11 and the molybdenum supporting plate 8, one end surface of the heat insulation layer 5 is fixedly attached to the inner wall of the upper furnace body 11, and the other end surface of the heat insulation layer 5 is fixedly attached to one end of the molybdenum supporting plate 8; the crucible bottom plate 7 is positioned between the crucible 3 and the supporting block 6, the lower end face of the crucible bottom plate 7 is fixedly attached to the upper end face of the supporting block 6, and the upper end face of the crucible bottom plate 7 is fixedly attached to the lower end face of the crucible 3; the heating elements 4 are symmetrically arranged around the crucible 3, after the temperature rises due to the heating of the heating elements 4, the heating elements 4 directly radiate the crucible 3, so that the heat can be efficiently and directly transferred to the crucible 3, metal materials in the crucible 3 can be heated, the outer sides of the periphery of the heating elements 4 are provided with the heat-insulating layer 5 fixed on the molybdenum supporting plate 8, and the heat-insulating layer 5 comprises an outer heat-insulating layer 51, an inner heat-insulating layer 52, a molybdenum plate 53, a carbon screw 54 and a nut 55; a hollow layer 56 is arranged between the outer heat-insulating layer 51 and the inner heat-insulating layer 52, the molybdenum plate 53 is arranged in the hollow layer 56, through holes for the carbon-carbon screw rods 54 to pass through are arranged on the molybdenum plate 53 and the molybdenum supporting plate 8, and the carbon-carbon screw rods 54 sequentially pass through the outer heat-insulating layer 51, the molybdenum plate 53, the inner heat-insulating layer 52 and the molybdenum supporting plate 8 and then are fixedly connected with the nuts 55. The double-layer heat preservation structure of the outer heat preservation layer 51 and the inner heat preservation layer 52 is adopted, the outer heat preservation layer 51 and the inner heat preservation layer 52 are connected through the carbon-carbon screw 54 and are pressed tightly through the nut 55, the hollow layer 56 is arranged between the outer heat preservation layer 51 and the inner heat preservation layer 52, the arrangement of the hollow layer 56 ensures that the outer heat preservation layer 51 and the inner heat preservation layer 52 are not in direct contact, the heat conduction area is reduced, heat can be effectively prevented from being transferred to a shell on the outer surface of the furnace body along a crucible, the molybdenum plate 53 is arranged in the hollow layer 56, the molybdenum plate 53 can reflect the heating element 4 and the inner heat preservation layer 52, the energy radiated to the surface of the heating element, the energy reflection can effectively reduce the heat loss in the furnace body 1, the heat can be effectively prevented from being transferred from the shell to the outside, the heat utilization efficiency is improved, under the same condition, the, the maximum utilization of heat energy is realized. Meanwhile, a sundry discharging hole 21 is formed in the furnace cover 2, an exhaust pipe 10 communicated with the sundry discharging hole 21 is arranged outside the furnace cover 2, the exhaust pipe 10 is connected with an exhaust fan 13, and the output end of the exhaust fan 13 is connected with a purifying device 14; the gas of impurity mixed generated in the melting process is discharged from the impurity discharge hole 21 through the exhaust pipe 10, the exhaust fan 13 outside the furnace cover 2 pumps the gas in the liquid in the exhaust pipe 10 through the exhaust pipe 131, and the gas is purified and discharged through the gasification device 14, so that the impurity generated in the metal block melting process is prevented from being discharged into the atmosphere.

Optionally, the outer insulation layer 51 comprises a first outer insulation layer 511, a second outer insulation layer 512; the inner insulation layer 52 comprises a first inner insulation layer 521 and a second inner insulation layer 522; the first outer heat-insulating layer 511 and the second outer heat-insulating layer 512 are combined to form a first splicing seam 15; the first inner insulating layer 521 and the second inner insulating layer 522 are combined to form a second seam 16; the first splicing seam 15 and the second splicing seam 16 are arranged in a staggered manner.

Particularly, the outer heat-insulating layer 51 and the inner heat-insulating layer 52 are arranged, so that the heat-insulating effect of the furnace body 1 is better, heat is concentrated in the furnace body 1 and is not easy to dissipate, and the heat-insulating and energy-saving performance is improved; in view of more convenient field installation, the outer insulation layer 51 has a first outer insulation layer 511, a second outer insulation layer 512 and the inner insulation layer 52 provided with a first inner insulation layer 521 and a second inner insulation layer 522; the first splicing seam 15 and the second splicing seam 16 are arranged in a staggered mode, heat is reduced and dissipated to the furnace wall of the furnace body 1 from the first splicing seam 15 and the second splicing seam 16, and the heat insulation performance of the heat insulation layer 5 is further improved.

Optionally, the supporting block 6 includes a protruding portion 61 and a bottom supporting portion 62 connected to the protruding portion 61, and a lower end surface of the bottom supporting portion 62 is fixedly attached to the inner wall of the bottom of the upper furnace body 11; the periphery of the protruding portion 61 is provided with a heat preservation felt 9, the lower end face of the heat preservation felt 9 is fixedly attached to the upper end face of the bottom supporting portion 62, and the upper end face of the heat preservation felt 9 is fixedly attached to the lower end face of the crucible bottom plate 7.

Specifically, the heat preservation felt 9 is arranged around the protruding portion 61, the lower end face of the heat preservation felt 9 is fixedly attached to the upper end face of the bottom supporting portion 62, and the upper end face of the heat preservation felt 9 is fixedly attached to the lower end face of the crucible bottom plate 7. . The heat preservation felt 9 is positioned between the supporting block 6 and the crucible bottom plate 7 directly, and can also play a role in transferring heat to the supporting block 6 by the crucible bottom plate 7, so that the heat preservation performance of the bottom of the crucible 3 can be improved.

Alternatively, in order to achieve the stability of the crucible 3 during placement and installation and ensure that the crucible 3 has enough installation space, the outer dimensions of the upper and lower end surfaces of the crucible bottom plate 7 are larger than the outer dimensions of the bottom end surface of the crucible 3 and the upper end surface of the boss 61 of the support block 6.

Optionally, in order to improve the heat insulation performance of the lower furnace body 12, heat insulation cotton 9 matched with the inner cavity in shape is laid in the inner cavity of the lower furnace body 12.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. A quick energy-saving environment-friendly metal melting furnace comprises a furnace body (1), a furnace cover (2) which is used for covering the furnace body (1) and is fixedly connected with the upper end of the furnace body (1), a crucible (3) positioned in the furnace body (1), and a heating element (4) which is used for heating metal in the crucible (3); the furnace body (1) comprises an upper furnace body (11) and a lower furnace body (12) fixedly connected with the upper furnace body (11); the method is characterized in that:

the crucible furnace is characterized by further comprising a heat insulation layer (5) positioned in the upper furnace body (11), a supporting block (6) positioned in the upper furnace body (1) and fixedly arranged at the bottom of the upper furnace body (1), a crucible bottom plate (7) positioned in the upper furnace body (1) and used for supporting the crucible (3), and a molybdenum supporting plate (8) fixedly connected with the periphery of the inner wall of the upper furnace body (11) and used for connecting the heating element (4);

the upper end surface of the molybdenum supporting plate (8) is connected with the inner wall of the upper end of the upper furnace body (11), the lower end surface of the molybdenum supporting plate (8) is connected with the inner wall of the lower end of the upper furnace body (11), one side of the molybdenum supporting plate (8) close to the crucible (3) is connected with a heating element (4), and the heating element (4) is fixedly connected with the molybdenum supporting plate (8) through bolts; the heating elements (4) are symmetrically arranged on the periphery of the outer part of the crucible (3), the heat insulation layer (5) of the heating elements (4) is positioned between the inner wall of the upper furnace body (11) and the molybdenum supporting plate (8), one end surface of the heat insulation layer (5) is fixedly attached to the inner wall of the upper furnace body (11), and the other end surface of the heat insulation layer (5) is fixedly attached to one end of the molybdenum supporting plate (8); the crucible bottom plate (7) is positioned between the crucible (3) and the supporting block (6), the lower end face of the crucible bottom plate (7) is fixedly attached to the upper end face of the supporting block (6), and the upper end face of the crucible bottom plate (7) is fixedly attached to the lower end face of the crucible (3);

the furnace cover (2) is provided with a sundry discharging hole (21), the outer part of the furnace cover (2) is provided with an exhaust pipe (10) communicated with the sundry discharging hole (21), the exhaust pipe (10) is connected with an exhaust fan (13), and the output end of the exhaust fan (13) is connected with a purifying device (14);

the heat-insulating layer (5) comprises an outer heat-insulating layer (51), an inner heat-insulating layer (52), a molybdenum plate (53), a carbon-carbon screw (54) and a nut (55);

a hollow layer (56) is arranged between the outer heat-insulating layer (51) and the inner heat-insulating layer (52), the molybdenum plate (53) is arranged in the hollow layer (56), through holes for the carbon-carbon screws (54) to pass through are formed in the molybdenum plate (53) and the molybdenum supporting plate (8), and the carbon-carbon screws (54) sequentially pass through the outer heat-insulating layer (51), the molybdenum plate (53), the inner heat-insulating layer (52) and the molybdenum supporting plate (8) and then are fixedly connected with the nuts (55).

2. A rapid energy-saving environment-friendly metal melting furnace as claimed in claim 1, characterized in that:

the outer heat-insulating layer (51) comprises a first outer heat-insulating layer (511) and a second outer heat-insulating layer (512);

the inner heat-insulating layer (52) comprises a first inner heat-insulating layer (521) and a second inner heat-insulating layer (522);

the first outer heat-insulating layer (511) and the second outer heat-insulating layer (512) are combined to form a first splicing seam (15); the first inner heat-insulating layer (521) and the second inner heat-insulating layer (522) are combined to form a second seam (16); the first splicing seam (15) and the second splicing seam (16) are arranged in a staggered mode.

3. A rapid energy-saving environment-friendly metal melting furnace as claimed in claim 1, characterized in that:

the supporting block (6) comprises a convex part (61) and a bottom supporting part (62) connected with the convex part (61), and the lower end face of the bottom supporting part (62) is fixedly attached to the inner wall of the bottom of the upper furnace body (11); the crucible bottom plate is characterized in that a heat preservation felt (9) is arranged on the periphery of the protruding portion (61), the lower end face of the heat preservation felt (9) is fixedly attached to the upper end face of the bottom supporting portion (62), and the upper end face of the heat preservation felt (9) is fixedly attached to the lower end face of the crucible bottom plate (7).

4. A rapid energy-saving environment-friendly metal melting furnace as claimed in claim 1, characterized in that:

the external dimensions of the upper end face and the lower end face of the crucible bottom plate (7) are larger than the external dimensions of the bottom end face of the crucible (3) and the upper end face of the bulge (61) of the supporting block (6).

5. A rapid energy-saving environment-friendly metal melting furnace as claimed in claim 1, characterized in that:

the inner cavity of the lower furnace body (12) is paved with heat preservation cotton (18) matched with the shape of the inner cavity.