CN214199686U - Hearth sealing structure of box type electric furnace - Google Patents

Abstract

The utility model provides a hearth sealing structure of a box-type electric furnace, which comprises a hearth body, a fire hole, a furnace door and a heat preservation layer, wherein the heat preservation layer is sleeved outside the hearth body, the fire hole is arranged at the front end of the hearth body, and the fire hole is used for installing the furnace door; the furnace mouth comprises a front furnace mouth and a rear furnace mouth, the front furnace mouth is of a rectangular frame structure, the inner wall of the front furnace mouth is inclined towards the left lower part and the right higher part, and the inclination angle is equal to the inclination angle of the upper layer of the furnace door; the right side surface of the front furnace mouth is provided with a bulge with the same size as the middle layer of the furnace door; the left end of the front fire hole is fixedly connected with a rear fire hole, the rear fire hole is of a rectangular frame structure, a fire blocking brick is arranged at the rear fire hole, and the left side surface of the rear fire hole is attached to the hearth body. The utility model discloses a furnace gate and the inseparable cooperation of fire door have prevented the inside thermal loss of furnace effectively, can effectively prevent the inside electrode oxidation of furnace simultaneously, and the life of extension equipment reduces the consumption and the waste of the energy.

Description

Hearth sealing structure of box type electric furnace

Technical Field

The utility model belongs to the technical field of the electric stove, especially, relate to a furnace seal structure of box electric stove.

Background

The box-type electric furnace is a box-type resistance furnace for short, and the resistance furnace is an industrial furnace which heats workpieces or materials by utilizing the heating of electric heating elements or heating media in the furnace through current. The electric stove that the use temperature reaches 1800 ℃ is called high temperature electric stove usually, the leakproofness requirement of high temperature electric stove in to the furnace is higher, because be in high temperature service environment for a long time, it is not tight probably to appear closing between furnace and the furnace gate, in the air admission furnace, not only can cause the electrode oxidation in the furnace, make the temperature in the furnace uneven, can make the inside heat loss of furnace simultaneously, make the processing temperature not reach the operation requirement, the rise in temperature time has not only been prolonged, manufacturing cost has also been increased indirectly.

Disclosure of Invention

In view of this, the present invention provides a furnace sealing structure of a box-type electric furnace to solve the above problems.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the hearth sealing structure of the box-type electric furnace comprises a hearth body, a furnace opening, a furnace door and a heat insulation layer, wherein the heat insulation layer is sleeved outside the hearth body; the furnace mouth comprises a front furnace mouth and a rear furnace mouth, the front furnace mouth is of a rectangular frame structure, the inner wall of the front furnace mouth is inclined in a manner of low left and high right, and the inclination angle is equal to that of the upper layer of the furnace door; the right side surface of the front furnace mouth is provided with a bulge with the same size as the middle layer of the furnace door; the left end of the front fire hole is fixedly connected with a rear fire hole, the rear fire hole is of a rectangular frame structure, a fire blocking brick is arranged at the rear fire hole, and the left side surface of the rear fire hole is attached to the hearth body; the hearth body comprises a first top plate, a first left side plate, a first bottom plate and a first right side plate which are sequentially spliced end to form a frame structure, the first bottom plate is positioned at the bottom, the first back plate is arranged on one side of the frame, and the outer surface of the other side of the frame is attached to the left surface of the rear furnace mouth; a furnace bottom plate is arranged on the upper surface of the first bottom plate; the center of the front surface of the first top plate is provided with a first through hole for mounting a corundum tube; two rows of first jacks are arranged above the first top plate.

Further, the heat-insulating layer comprises an inner heat-insulating layer and an outer heat-insulating layer, the inner heat-insulating layer comprises a second top plate, a second back plate, a second left side plate, a second right side plate and a second bottom plate, the second left side plate, the second right side plate and the second back plate are vertically arranged between the second top plate and the second bottom plate to form a box body structure with an opening at the front end, the outer surfaces of the first top plate, the first back plate, the first left side plate, the first right side plate and the first bottom plate are respectively and tightly attached to the inner surfaces of the second top plate, the second back plate, the second left side plate, the second right side plate and the second bottom plate, the front surface of the second bottom plate is flush with the front surface of the first bottom plate, and the length of the second top plate is greater than that of the first top plate; two first square holes are symmetrically formed in the second top plate and used for mounting T-shaped plug bricks, each first square hole is located right above a row of first insertion holes, and the width of each first square hole is equal to the minimum width of each T-shaped plug brick; the outer surface of the inner heat-insulating layer is tightly attached to the inside of the outer heat-insulating layer, the outer heat-insulating layer comprises a third top plate, a third back plate, a third left side plate, a third right side plate and a third bottom plate, the third left side plate, the third right side plate and the third back plate are vertically arranged between the third top plate and the third bottom plate to form a box body structure with an opening at the front end, and a ladder is formed between the opening at the front end and the inner heat-insulating layer; the outer surfaces of the second top plate, the second back plate, the second left side plate, the second right side plate and the second bottom plate are tightly attached to the inner surfaces of the third top plate, the third back plate, the third left side plate, the third right side plate and the third bottom plate respectively; no. three roof is last the symmetry be equipped with two quad slit No. two for the T type of installation stopper brick, every the quad slit No. two is located a quad slit directly over, the width of quad slit No. two equals the maximum width that the brick was filled in to the T type.

Furthermore, a plurality of second jacks are uniformly arranged on the T-shaped plug brick, and a first jack corresponds to the lower part of each second jack.

Furthermore, the fire-blocking brick is of a plate-shaped structure with a T-shaped cross section, and four second through holes are formed in the center of the front surface of the fire-blocking brick.

Furthermore, the front furnace mouth and the rear furnace mouth are connected through a pin, and the pin is made of corundum.

Furthermore, the hearth body, the front furnace mouth, the rear furnace mouth and the fire blocking bricks are all made of foamed ceramics.

Furthermore, the inner heat-insulating layer is made of heat-insulating plates.

Furthermore, the outer heat-insulating layer is made of a heat-insulating felt.

Compared with the prior art, a furnace seal structure of box electric stove have following advantage:

(1) the utility model discloses a furnace gate and the inseparable cooperation of fire door have prevented the inside thermal loss of furnace effectively, can effectively prevent the inside electrode oxidation of furnace simultaneously, and the life of extension equipment reduces the consumption and the waste of the energy, has reduced use cost.

(2) The utility model discloses rational in infrastructure, sealed effectual has shortened the programming time for the processing temperature can reach the operation standard rapidly, has improved the heat utilization ratio of electric stove.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic cross-sectional view of the overall structure according to an embodiment of the present invention;

fig. 2 is a front sectional view schematically illustrating the structure according to an embodiment of the present invention;

FIG. 3 is a schematic view of a structure of the furnace mouth, the furnace door, and the hearth body according to an embodiment of the present invention;

FIG. 4 is a schematic view of a furnace mouth according to an embodiment of the present invention;

FIG. 5 is a schematic sectional view of a furnace mouth according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a forehearth according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a rear furnace mouth according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a furnace door according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of a fire brick according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a furnace according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of an inner insulating layer according to an embodiment of the present invention;

FIG. 12 is a schematic structural view of an external thermal insulation layer according to an embodiment of the present invention;

fig. 13 is a schematic structural view of a T-shaped plug brick according to an embodiment of the present invention.

Description of reference numerals:

1-a hearth body; 11-top plate; jack No. 111-I; 112-one through hole; 12-a backing sheet; 13-left side panel No. one; 14-right side panel No. one; 15-a bottom plate; 16-a furnace floor; 2-furnace mouth; 21-front furnace mouth; 22-rear furnace mouth; 221-fire blocking bricks; 3-furnace door; 31-furnace door insulating layer; 4-an insulating layer; 41-inner heat insulation layer; 411-top plate number two; 4111-a first square hole; 412-backboard No. two; 413-left side panel II; 414-right side panel No. two; 415-bottom panel No. two; 42-outer insulating layer; 421-top plate No. three; 4211-square hole No. two; 422-backboard No. three; 423-left side panel III; 424-right side panel # three; 425-bottom plate number three; 426-T shaped plug bricks; 4261-second insertion hole.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 9, a hearth sealing structure of a box-type electric furnace is characterized in that: the furnace comprises a hearth body 1, a furnace mouth 2, a furnace door 3 and a heat-insulating layer 4, wherein the heat-insulating layer 4 is sleeved outside the hearth body 1, the furnace mouth 2 is arranged at the front end of the hearth body 1, and the furnace mouth 2 is used for installing the furnace door 3.

The furnace door 3 comprises an upper layer, a middle layer and a lower layer which are integrated, the lower layer is of a rectangular plate structure, the middle layer is of a rectangular plate structure, the upper layer is of a rectangular platform structure, a furnace door heat-insulating layer 31 is arranged on the outer surface of the lower layer of the furnace door 3, and the furnace door heat-insulating layer 31 is made of heat-insulating felt; the furnace mouth 2 comprises a front furnace mouth 21 and a rear furnace mouth 22, the front furnace mouth 21 and the rear furnace mouth 22 are connected through a pin, and the pin is made of corundum, is high-temperature resistant and prevents deformation; the front furnace mouth 21 is of a rectangular frame structure, the inner wall of the front furnace mouth 21 is inclined towards the left lower part and the right higher part, the inclination angle is equal to the inclination angle of the upper layer of the furnace door 3, the front furnace mouth can be completely matched in a closed state, the sealing effect is enhanced, and heat is prevented from dissipating; the right side surface of the front furnace mouth 21 is provided with a projection with the same size as the middle layer of the furnace door 3, and the projection can be completely closed with the middle layer of the furnace door 3 when being closed, so that the effect of two-layer sealing is achieved; the left end of the front fire hole 21 is fixedly connected with a rear fire hole 22, the rear fire hole 22 is of a rectangular frame structure, a fire blocking brick 221 is arranged at the rear fire hole 22, the fire blocking brick 221 is of a plate-shaped structure with a T-shaped cross section, deformation of the fire hole 2 and fire leakage inside the hearth body 1 are prevented, and a first layer of sealing effect is achieved; four second through holes are formed in the center of the front surface of the fire blocking brick 221, and an operator can insert the calipers into the second through holes to take out the calipers, so that the operator is prevented from being scalded by high temperature, and the operation risk is reduced; the front furnace mouth 21, the rear furnace mouth 22 and the fire blocking bricks 221 are formed by splicing foamed ceramics, and the furnace mouth 2 and the fire blocking bricks 221 of most box-type electric furnaces are of an integral structure, so that when the box-type electric furnace is used at high temperature, the box-type electric furnace is broken due to overlarge thermal stress, and the service life of the electric furnace is shortened; the front furnace mouth 21, the rear furnace mouth 22 and the fire blocking bricks 221 which are spliced by using the pins can eliminate thermal stress and prevent high-temperature fracture.

As shown in fig. 10, the hearth body 1 comprises a first top plate 11, a first left side plate 13, a first bottom plate 15 and a first right side plate 14 which are sequentially spliced end to form a frame structure, the first bottom plate 15 is positioned at the bottom, and a first back plate 12 is arranged on one side of the frame, so that the structure is stable and is not easy to deform; the outer surface of the other side of the frame is attached to the left surface of the rear furnace opening 22; a furnace bottom plate 16 is arranged on the upper surface of the first bottom plate 15; two rows of first jacks 111 are arranged above the first top plate 11; the center of the front surface of the first top plate 11 is provided with a first through hole 112 for mounting a corundum tube, and the corundum tube has the characteristic of high temperature resistance, can resist 1400-1600 ℃ and is mounted in the center of the first top plate 11, so that the first top plate 11 can be prevented from deforming and collapsing in the high-temperature use process; the hearth body 1 is made of foamed ceramic.

As shown in fig. 11 to 13, the insulating layer 4 includes an inner insulating layer 41 and an outer insulating layer 42, the inner insulating layer 41 includes a second top plate 411, a second back plate 412, a second left side plate 413, a second right side plate 414 and a second bottom plate 415, the second left side plate 413, the second back plate 412 and the second right side plate 414 are vertically installed between the second top plate 411 and the second bottom plate 415 to form a box structure with an open front end, and outer surfaces of the first top plate 11, the first back plate 12, the first left side plate 13, the first right side plate 14 and the first bottom plate 15 are respectively closely attached to inner surfaces of the second top plate 411, the second back plate 412, the second left side plate 413, the second right side plate 414 and the second bottom plate 415; the front surface of the second bottom plate 415 is flush with the front surface of the first bottom plate 15, and the length of the second top plate 411 is greater than that of the first top plate 11; two first square holes 4111 are symmetrically formed in the second top plate 411 and used for mounting the T-shaped plug brick 426, each first square hole 4111 is located right above one row of first insertion holes 111, and the width of each first square hole 4111 is equal to the minimum width of the T-shaped plug brick 426, so that no gap exists at a joint, the sealing effect of the joint is enhanced, and heat dissipation is prevented; the inner heat-insulating layer 41 is made of heat-insulating boards, and is good in heat-insulating performance, strong in deformation resistance and light in weight.

The outer heat-insulating layer 42 comprises a third top plate 421, a third back plate 422, a third left side plate 423, a third right side plate 424 and a third bottom plate 425, the third left side plate 423, the third back plate 422 and the third right side plate 424 are vertically arranged between the third top plate 421 and the third bottom plate 425 to form a box structure with an opening at the front end, and the opening at the front end and the inner heat-insulating layer 41 form a ladder, so that the furnace mouth 2 is more stably installed and is not easy to deform at high temperature; the outer surfaces of the second top plate 411, the second back plate 412, the second left side plate 413, the second right side plate 414 and the second bottom plate 415 are respectively tightly attached to the inner surfaces of the third top plate 421, the third back plate 422, the third left side plate 423, the third right side plate 424 and the third bottom plate 425; two second square holes 4211 are symmetrically arranged on the third top plate 421 and used for mounting the T-shaped plug brick 426, each second square hole 4211 is positioned right above one first square hole 4111, and the width of each second square hole 4211 is equal to the maximum width of the T-shaped plug brick 426, so that no gap exists at the joint, the sealing effect of the T-shaped plug brick is enhanced, and heat dissipation is prevented; a plurality of second jacks 4261 are uniformly arranged on the T-shaped plug brick 426, one first jack 111 is corresponding to the lower part of each second jack 4261 and is used for inserting a heating electrode, and meanwhile, the heat-insulating layer 2 is prevented from being damaged by high temperature after being electrified, the service life of the heat-insulating layer is prolonged, and an insulating effect can be achieved; the outer heat-insulating layer 42 is made of heat-insulating felt, and is light in weight and good in heat-insulating property.

The utility model discloses a theory of operation does:

before use, the furnace bottom plate 16 is placed on the first bottom plate 15, the heating electrode is inserted into the first insertion hole 111 above the hearth body 1 and is sequentially sleeved with the inner heat-insulating layer 41 and the outer heat-insulating layer 42, then the second insertion hole 4261 of the T-shaped plug brick 426 is aligned with the heating electrode and is installed in the second square hole 4211, then the rear furnace mouth 22 and the front furnace mouth 21 are sequentially installed from inside to outside, the fire blocking brick 221 is placed at the rear furnace mouth 22 by using a fixture, and then the furnace door 3 is installed.

When the heating furnace is used, the heating electrodes are sequentially connected in series and are powered on to heat, and heat generated by the heating electrodes is not easy to escape under the multi-layer sealing of the furnace door 3 and the furnace opening 2, so that the heating furnace can be fully utilized.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a furnace seal structure of box electric stove which characterized in that: the furnace comprises a hearth body (1), a furnace opening (2), a furnace door (3) and a heat-insulating layer (4), wherein the heat-insulating layer (4) is sleeved outside the hearth body (1); the furnace door (3) comprises an upper layer, a middle layer and a lower layer which are integrated, the lower layer is of a rectangular plate structure, the middle layer is of a rectangular plate structure, the upper layer is of a rectangular platform structure, and a furnace door heat-insulating layer (31) is arranged on the outer surface of the lower layer of the furnace door (3); the furnace mouth (2) comprises a front furnace mouth (21) and a rear furnace mouth (22), the front furnace mouth (21) is of a rectangular frame structure, the inner wall of the front furnace mouth (21) is inclined towards the left lower part and the right higher part, and the inclination angle is equal to the inclination angle of the upper layer of the furnace door; the right side surface of the front furnace mouth (21) is provided with a projection with the same size as the middle layer of the furnace door (3); the left end of the front furnace mouth (21) is fixedly connected with a rear furnace mouth (22), the rear furnace mouth (22) is of a rectangular frame structure, and a fire blocking brick (221) is arranged at the rear furnace mouth (22); the hearth body (1) comprises a first top plate (11), a first left side plate (13), a first bottom plate (15) and a first right side plate (14) which are sequentially spliced end to form a frame structure, the first bottom plate (15) is positioned at the bottom, a first back plate (12) is installed on one side of the frame, and the outer surface of the other side of the frame is attached to the left surface of a rear furnace opening (22); a furnace bottom plate (16) is arranged on the upper surface of the first bottom plate (15); two rows of first jacks (111) are arranged above the first top plate (11); the center of the front surface of the first top plate (11) is provided with a first through hole (112) for installing a corundum tube.

2. The hearth sealing structure of a box-type electric furnace according to claim 1, characterized in that: the heat-insulating layer (4) comprises an inner heat-insulating layer (41) and an outer heat-insulating layer (42), the inner heat-insulating layer (41) comprises a top plate (411) II, a back plate (412) II, a left side plate (413) II, a right side plate (414) II and a bottom plate (415) II, the left side plate (413) II, the back plate (412) II and the right side plate (414) II are vertically arranged between the top plate (411) II and the bottom plate (415) II to form a box body structure with an open front end, the outer surfaces of the top plate (11), the back plate (12), the left side plate (13), the right side plate (14) I and the bottom plate (15) I are respectively tightly attached to the inner surfaces of the top plate (411) II, the back plate (412), the left side plate (413) II, the right side plate (414) II) and the bottom plate (415), the front surface of the bottom plate (415) II is flush with the front surface of the bottom plate (15), the length of the second top plate (411) is greater than that of the first top plate (11); two first square holes (4111) are symmetrically formed in the second top plate (411) and used for mounting a T-shaped plug brick (426), each first square hole (4111) is located right above a row of first jacks (111), and the width of each first square hole (4111) is equal to the minimum width of the T-shaped plug brick (426); the outer heat-insulating layer (42) comprises a third top plate (421), a third back plate (422), a third left side plate (423), a third right side plate (424) and a third bottom plate (425), the third left side plate (423), the third back plate (422) and the third right side plate (424) are vertically arranged between the third top plate (421) and the third bottom plate (425) to form a box body structure with an opening at the front end, and a ladder is formed between the opening at the front end and the inner heat-insulating layer (41); the outer surfaces of the second top plate (411), the second back plate (412), the second left side plate (413), the second right side plate (414) and the second bottom plate (415) are tightly attached to the inner surfaces of the third top plate (421), the third back plate (422), the third left side plate (423), the third right side plate (424) and the third bottom plate (425) respectively; no. three roof (421) are gone up the symmetry and are equipped with two quad slit (4211) No. two for the brick (426) are filled up to the installation T type, every quad slit (4211) are located a quad slit (4111) directly over, the width of quad slit (4211) No. two equals the maximum width that the brick (426) were filled up to the T type.

3. The hearth sealing structure of a box-type electric furnace according to claim 2, characterized in that: a plurality of second jacks (4261) are uniformly arranged on the T-shaped plug brick (426), and a first jack (111) corresponds to the lower part of each second jack (4261).

4. The hearth sealing structure of a box-type electric furnace according to claim 1, characterized in that: the hearth body (1), the front furnace mouth (21), the rear furnace mouth (22) and the fire blocking bricks (221) are made of foamed ceramics.

5. The hearth sealing structure of a box-type electric furnace according to claim 4, characterized in that: the fire blocking brick (221) is of a plate-shaped structure with a T-shaped cross section, and four second through holes are formed in the center of the front surface of the fire blocking brick (221).

6. The hearth sealing structure of a box-type electric furnace according to claim 2, characterized in that: the inner heat-insulating layer (41) is made of heat-insulating plates.

7. The hearth sealing structure of a box-type electric furnace according to claim 2, characterized in that: the outer heat-insulating layer (42) and the furnace door heat-insulating layer (31) are made of heat-insulating felts.

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