Heat dissipation structure of hearth of electric kiln

Abstract

The utility model relates to the field of electric kilns, in particular to a hearth heat dissipation structure of an electric kiln, a heat dissipation cavity is arranged between a kiln body and a hearth of the electric kiln, the top of the kiln body is open, a heat exchange cover and a fan guide cover are arranged at the opening from bottom to top, and hot air overflowing from the heat dissipation cavity is discharged outwards through the fan guide cover after passing through the heat exchange cover; the heat exchange cover is externally connected with a water inlet and a water outlet, the water inlet and the water outlet are communicated through water cooling channels, and gaps exist between the adjacent water cooling channels for airflow to pass through. Hot air in the electric kiln is led out after being cooled, continuous rising of the temperature around the electric kiln is avoided, and comfort and safety of workers around the electric kiln are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric kiln, concretely is a kind of electric kiln hearth heat dissipation structure. BACKGROUND

[0002] Electric kiln is a kind of kiln equipment using electric energy as heat source, it is widely used in the processing and manufacturing process in the field of ceramic, glass, metal, new material, etc., passes through power supply system input electric energy, electric energy is heated through the electric heating element (such as resistance wire, silicon-carbon rod etc.) in heating system and generates heat, these heat is transferred to the material in furnace body, makes it reach required temperature, to realize heating, sintering, melting etc. Process purpose.The traditional electric kiln, such as the one described in the announcement number "CN211626059U", includes the furnace body with hearth, conveying device and heating device are installed in hearth.In the heating process of electric kiln, the temperature in hearth rises, at the same time, heat will overflow, radiation heat exchange between hearth and furnace body, greatly raise the temperature of electric kiln furnace body, lead to the temperature of electric kiln periphery rises, influence normal work of electric kiln periphery staff.To solve the temperature rise problem of electric kiln, can paste aluminium foil heat insulation board at furnace body, to reduce radiation heat exchange between furnace body and hearth, but this way still cannot fundamentally eliminate the heat overflowed from hearth, heat still disperses outward from the gap between heat insulation boards, make the temperature of electric kiln furnace body slowly and continuously rise, influence the comfort and safety of electric kiln periphery staff, therefore, it is urgent to solve. CONTENT OF UTILITY MODEL

[0003] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a kind of electric kiln hearth heat dissipation structure.The utility model exports hot gas after cooling in electric kiln, avoids the temperature of electric kiln periphery to continue to rise, improves the comfort and safety of electric kiln periphery staff.

[0004] To realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A kind of electric kiln hearth heat dissipation structure, there is heat dissipation cavity between the furnace body of electric kiln and hearth, the top of furnace body is open, heat exchanger cover and fan flow guide cover are arranged from bottom to top at opening, hot gas overflowed in heat dissipation cavity is discharged outward through fan flow guide cover after heat exchanger cover;Heat exchanger cover is connected with water inlet and water outlet, water inlet and water outlet are communicated by water cooling channel, gap is present between adjacent water cooling channels for airflow.

[0006] As a further scheme of the utility model: the water cooling channel is water cooling piece, each water cooling piece is arranged parallel with each other along vertical direction, cooling water in adjacent water cooling pieces flows in opposite directions.

[0007] As a further scheme of the utility model: spray head is installed at water inlet and / or water outlet, the nozzle of spray head is directed to the outer wall of furnace body.

[0008] As a further scheme of the utility model: the collecting groove is arranged on both sides of the furnace body along the length direction of the electric kiln, and the collecting groove is located below the spray head to collect the cooling water.

[0009] As a further scheme of the utility model: the fan flow guide cover is in the shape of a horn mouth that gradually narrows from bottom to top, and the heat dissipation fan is arranged at the center of the fan flow guide cover, and the blade axis of the heat dissipation fan is vertically arranged.

[0010] As a further scheme of the utility model: the inner wall of the furnace body is provided with flow guide vanes in the vertical direction.

[0011] As a further scheme of the utility model: the furnace wall of the furnace body is provided in a two-section mode, including a vertical section and an inclined section located above the vertical section, and the inclined section is gradually narrowed from bottom to top to be connected with the heat exchange cover, and the height of the vertical section corresponds to the height of the hearth.

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

[0013] 1. The utility model discloses a heat dissipation cavity between the furnace body and the hearth to guide the hot gas overflowing outside the hearth outwards, and when the high-heat airflow passes through the water flow channel of the heat exchange cover, the water is cooled and then collected by the fan flow guide cover and discharged outwards, so that the temperature around the electric kiln is prevented from continuously rising, and the comfort and safety of the staff around the electric kiln are improved.

[0014] 2. The utility model discloses that the heat exchange cover is provided with parallel water cooling fins, cooling water is continuously introduced into the water cooling fins through the water inlet and the water outlet of the heat exchange cover, the directions of the adjacent cooling water flows are opposite, the heat exchange efficiency is enhanced, and the water flow is ensured to sufficiently absorb the heat in the hot gas when passing through; when the spray head is arranged only on the water outlet, the arrangement of the opposite cooling water flows of the water cooling fins can enable both sides of the furnace body to be cooled by the water mist sprayed by the spray head, and the heat dissipation efficiency is further improved.

[0015] 3. The utility model discloses that the inner wall of the inclined section of the furnace body is provided with flow guide vanes along the length direction of the inclined section, the heat gas flow path is optimized, and the heat gas is gathered to the heat dissipation fan at the center of the fan flow guide cover.

[0016] 4. The utility model discloses that the two-section inclined design of the furnace body can gather the water droplets of the water mist along the inclined section and flow downwards into the collecting groove, and the subsequent recycling is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structural schematic view of the utility model.

[0018] Fig. 2 It is a structural schematic view of the sealing cover in the utility model.

[0019] Fig.:

[0020] 1, furnace body; 11, guide vane; 12, collection groove; 13, heat dissipation cavity;

[0021] 2, heat exchange cover; 21, water inlet; 22, water outlet; 23, spray head; 24, water cooling fin;

[0022] 3, furnace; 4, fan guide cover; 5, heat dissipation fan. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figs. 1-2 In the embodiments of the utility model, a furnace hearth heat dissipation structure of an electric kiln mainly comprises a furnace body 1, a furnace 3, a heat exchange cover 2, a fan guide cover 4, a heat dissipation fan 5 and other auxiliary components. The furnace body 1 serves as a support and protection structure, and the furnace 3 is accommodated in the furnace body 1. The furnace 3 is the main area for heating operation, and a heat dissipation cavity 13 is designed between the furnace body 1 and the furnace 3 for collecting and leading out the heat emitted by the furnace 3, and the heat is discharged outward through the opening at the top of the furnace body 1.

[0025] The furnace wall of the furnace body 1 is designed in two sections, including a vertical section and an inclined section above the vertical section, and the inclined section is arranged to be gradually closed from bottom to top, thereby being connected with the heat exchange cover 2, and the height of the vertical section corresponds to the height of the furnace 3. The inner wall of the inclined section of the furnace body 1 is provided with guide vanes 11 along the length direction of the inclined section, and each guide vane 11 is vertically arranged, thereby optimizing the heat flow path and improving the heat dissipation effect.

[0026] The top opening of the inclined section corresponds to the shape of the cover body of the heat exchange cover 2, and the inclined section of the furnace body 1 is welded or detachably fixed with the heat exchange cover 2 through a connecting piece. The water cooling fins 24 are vertically arranged in the heat exchange cover 2, each water cooling fin 24 is arranged along the width direction of the furnace body 1, each water cooling fin 24 is parallel to each other and has equal spacing, and a vertical passage is formed between adjacent water cooling fins 24 for the airflow to pass through.

[0027] The heat exchange cover 2 is provided with water inlets 21 and water outlets 22 corresponding to the number of water cooling fins 24, and the directions of the water inlets 21 and the water outlets 22 of adjacent two water cooling fins 24 are opposite, so that the cooling water flow directions of adjacent water cooling fins are opposite to each other, thereby enhancing the heat exchange efficiency and ensuring that the water flow can fully absorb the heat in the hot gas when passing through.

[0028] The water outlet 22 of each water cooling fin 24 is provided with a spray head 23, and the cooling water is sprayed to the outer wall of the inclined section of the furnace body 1 in the form of water mist after passing through the water cooling fin 24, so as to directly cool the furnace body 1. On both sides of the outer side of the furnace body 1, a collecting groove 12 is arranged along the length direction of the electric kiln. The collecting grooves 12 are located below the spray heads 23, and the water mist flows downward along the inclined section after gathering on the outer wall of the inclined section of the furnace body 1, so as to enter the collecting grooves 12, be collected, and then be discharged outward and recycled. The arrangement position of the collecting grooves 12 is preferably located at the interface between the inclined section and the vertical section of the furnace body 1.

[0029] A fan flow guide cover 4 is arranged above the heat exchange cover 2, and the fan flow guide cover 4 is gradually tapered from bottom to top, so as to form a horn mouth design, and the hot gas is gathered to the heat dissipation fan 5 at the center of the fan flow guide cover 4. The heat dissipation fan 5 blows air outward vertically from bottom to top, so as to complete the export of the hot gas. The gas exported by the heat dissipation fan 5 can be directly discharged outward if the temperature is not high, or can be discharged to the outside of the factory area through a pipeline if the temperature is high.

[0030] The basic principle of the application is described above in combination with specific embodiments, but it should be pointed out that the advantages, advantages, effects and the like mentioned in the application are only examples and are not limited, and these advantages, advantages, effects and the like cannot be considered as the must-have of each embodiment of the application. In addition, the above-mentioned specific details are only for the purpose of example and for the purpose of understanding, and are not limited to the above-mentioned specific details, and the application must be realized by the above-mentioned specific details.

[0031] The block diagrams of the devices, apparatuses, equipment, systems involved in the application are only illustrative examples and are not intended to require or imply that the connection, arrangement and configuration shown in the block diagram must be connected, arranged and configured. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged and configured in any way. Words such as "include", "contain", "have" and the like are open-ended words, which mean "include but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

Claims

1. A heat dissipation structure for the furnace chamber of an electric kiln, characterized in that, There is a heat dissipation cavity (13) between the furnace body (1) and the hearth (3) of the electric kiln, the top of the furnace body (1) is open, the opening is provided with a heat exchange cover (2) and a fan flow guide cover (4) from bottom to top, the hot gas overflowing in the heat dissipation cavity (13) is discharged outward through the fan flow guide cover (4) after passing through the heat exchange cover (2); the heat exchange cover (2) is externally connected with a water inlet (21) and a water outlet (22), the water inlet (21) and the water outlet (22) are communicated through a water cooling channel, and there is a gap between adjacent water cooling channels for airflow to pass through.

2. The heat dissipating structure for the furnace of an electric kiln according to claim 1, wherein The water cooling channel is a water cooling fin (24), each water cooling fin (24) is arranged parallel to each other in the vertical direction, and the cooling water in adjacent water cooling fins (24) flows in opposite directions.

3. The heat dissipating structure for the furnace of an electric kiln according to claim 1, wherein A spray head (23) is installed at the water inlet (21) and / or the water outlet (22), and the spray nozzle of the spray head (23) faces the outer wall of the furnace body (1).

4. The heat dissipating structure for the furnace of an electric kiln according to claim 3, wherein Collecting grooves (12) are arranged on both sides of the furnace body (1) along the length direction of the electric kiln, and the collecting grooves (12) are located below the spray head (23) to collect cooling water.

5. The heat dissipation structure of an electric furnace hearth according to any one of claims 1 to 4, characterized in that, The fan flow guide cover (4) is in the shape of a gradually narrowing trumpet from bottom to top, a heat dissipation fan (5) is arranged at the center of the fan flow guide cover (4), and the blade axis of the heat dissipation fan (5) is arranged vertically.

6. The heat dissipation structure of an electric furnace hearth according to any one of claims 1 to 4, characterized in that, The inner wall of the furnace body (1) is provided with guide vanes (11) in the vertical direction.

7. The heat dissipating structure for the furnace of an electric kiln according to any one of claims 1 to 4, wherein The furnace wall of the furnace body (1) is provided in two sections, including a vertical section and an inclined section above the vertical section, the inclined section is gradually narrowed from bottom to top, so as to be connected with the heat exchange cover (2), and the height of the vertical section corresponds to the height of the hearth (3).

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