CN220250633U - Built-in heating furnace and production system - Google Patents

Abstract

The utility model relates to a built-in heating furnace and a production system, which comprises a heating furnace body, wherein the heating furnace body comprises a sintering cavity; the conveying unit is arranged in the sintering cavity and is used for conveying the product to be heated; the heating unit comprises an air inlet device and a heating device; the air inlet device is arranged at the bottom of the heating furnace body and comprises an air passage, and an air outlet of the air passage is communicated with the sintering cavity; the heating devices are arranged in sequence along the conveying direction of the product to be heated, and are used for heating the gas exhausted from the gas outlet; the wind shielding tables are arranged on the cavity wall of the sintering cavity and are positioned on two sides of the conveying unit, protrude towards one side where the conveying unit is positioned, and form a barrier in the gas heating and rising process. According to the built-in heating furnace and the production system, the wind shielding table is arranged to reduce the gas flow rate, so that uniform heating is realized, the temperature uniformity is improved to +/-4 ℃, and the production efficiency and the product quality are ensured to be high.

Description

Built-in heating furnace and production system

Technical Field

The utility model relates to the technical field of heating, in particular to a built-in heating furnace and a production system.

Background

In the firing process, the product to be heated is typically heated by a kiln. When the traditional kiln is used, the product to be heated needs to be placed on a conveying device, and the product advances in the kiln along with the conveying device; while advancing, the air inlet device at the bottom of the kiln transmits air into the kiln, and the heating device of the kiln heats the air and heats the product through the heated air. Thus, the product is heated during the advancement process.

The number of products heated at a time in a conventional kiln is small, and typically a group of products includes only four in a 2 x 2 stack arrangement. With the continuous improvement of the requirements on the production efficiency of products, the yield of the traditional kiln cannot meet the production requirements. For this reason, technicians increase the production efficiency of the kiln by arranging a group of products in a 4×4 stack and simultaneously enlarging the aperture of the air inlet device accordingly. However, despite the relatively improved production efficiency, the quality of the product is affected, especially the uneven heating of the products on both sides of a group of products.

In view of the foregoing, there is a need for a heating furnace with better uniformity of temperature in the furnace to achieve both production efficiency and product quality.

Disclosure of Invention

Therefore, the utility model aims to solve the technical problems that the temperature uniformity of the existing kiln is poor, the production efficiency and the product quality are difficult to be considered, and the built-in heating furnace and the production system are provided, and the air flow rate is reduced by arranging the wind shielding table so as to realize uniform heating, the temperature uniformity is improved to +/-4 ℃, and the production efficiency and the product quality are ensured to be high.

The utility model provides a built-in heating furnace, which comprises a heating furnace body, wherein the heating furnace body comprises a sintering cavity; the conveying unit is arranged in the sintering cavity and is used for conveying the product to be heated; the heating unit comprises an air inlet device and a heating device; the air inlet device is arranged at the bottom of the heating furnace body and comprises an air passage, and an air outlet of the air passage is communicated with the sintering cavity; the heating devices are arranged in a plurality, and are sequentially arranged along the conveying direction of the product to be heated, and are used for heating the gas exhausted by the gas outlet; the wind shielding tables are arranged on the cavity wall of the sintering cavity and are positioned on two sides of the conveying unit, and the wind shielding tables protrude towards one side where the conveying unit is located and form a barrier in the gas heating and rising process.

In one embodiment of the utility model, the wind shielding table is disposed below the conveying unit.

In one embodiment of the utility model, the heating device comprises a first heating element and a second heating element; the first heating component comprises a first horizontal heating rod and a second horizontal heating rod, and the first horizontal heating rod and the second horizontal heating rod are axially and horizontally arranged; the first horizontal heating rod is arranged above the conveying unit, and the second horizontal heating rod is arranged below the conveying unit; the second heating component comprises a first vertical heating rod and a second vertical heating rod, and the first vertical heating rod and the second vertical heating rod are axially and vertically arranged; the first vertical heating rod and the second vertical heating rod are respectively arranged on two sides of the conveying unit.

In one embodiment of the utility model, the first vertical heating rod or/and the second vertical heating rod are arranged in the sintering chamber.

In one embodiment of the present utility model, the heating furnace body includes a stacking portion and a shell portion, the stacking portion being formed by stacking a plurality of refractory bricks and forming the sintering chamber; the shell part is arranged on the outer side of the stacking part in a surrounding mode.

In one embodiment of the utility model, a thermal insulation member is provided in the gap between the stacking portion and the housing portion.

In one embodiment of the utility model, the sintering device further comprises a plurality of groups of separation beam components, wherein the plurality of groups of separation beam components are arranged in the sintering cavity and are sequentially arranged along the conveying direction of the product to be heated, each group of separation beam components comprises a first separation beam and a second separation beam, the first separation beam is arranged at the bottom of the sintering cavity, and the second separation beam is arranged at the top of the sintering cavity.

In one embodiment of the utility model, the second isolation beam comprises a heat insulation piece and a heat insulation fixing piece, wherein the heat insulation piece is arranged on the top of the sintering cavity, the heat insulation fixing piece is connected with the heat insulation piece, and two ends of the heat insulation fixing piece are abutted against the cavity wall of the sintering cavity.

In one embodiment of the utility model, the heat insulating fixtures comprise a first heat insulating fixture and a second heat insulating fixture; the first heat insulation fixing piece is connected with the heat insulation piece, a convex part is arranged on the surface, which is contacted with the first heat insulation fixing piece, of the heat insulation piece, and a concave part which is matched with the convex part is arranged on the first heat insulation fixing piece; the second heat insulation fixing piece is connected with the first heat insulation fixing piece.

The utility model also provides a production system comprising the built-in heating furnace.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

according to the built-in heating furnace and the production system, the wind shielding tables are arranged on the cavity walls at two sides of the conveying unit, so that the blocking in the gas heating and rising process is formed. The heated and ascending gas encounters the wind shielding table, so that the ascending is blocked, the flowing around is needed, the heating can be obtained for a longer time, and the temperature in the middle and the temperature at the two sides are uniform and consistent. The temperature uniformity is good, and the temperature uniformity is improved to +/-4 ℃. The product quality can be ensured while the production efficiency of heating a larger quantity of products and products at one time is improved.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which

FIG. 1 is a schematic view showing a first view angle structure of a built-in heating furnace according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic view showing a second view angle structure of the built-in heating furnace according to the preferred embodiment of the present utility model;

FIG. 3 is a schematic view of a partial enlarged structure at A in FIG. 2;

FIG. 4 is a schematic view showing a partial sectional structure of a built-in heating furnace according to a preferred embodiment of the present utility model;

fig. 5 is a partially enlarged schematic structural view of fig. 4 at B.

Description of the specification reference numerals: 10. a heating furnace body; 11. a sintering cavity; 12. a cavity wall; 13. a cavity bottom; 14. a cavity roof; 15. a stacking portion; 16. a housing portion; 17. a thermal insulation member; 18. a third spacer; 20. a conveying unit; 30. an airway; 40. a heating device; 41. a first horizontal heating rod; 42. a second horizontal heating rod; 43. a first vertical heating rod; 44. a second vertical heating rod; 50. a wind shielding table; 60. a first spacer; 70. a second spacer; 71. a heat insulating member; 711. a convex portion; 721. a first heat insulating fixing member; 722. a concave portion; 723. a second heat insulating fixture; 80. the product to be heated.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

The utility model discloses a built-in heating furnace, which comprises a heating furnace body 10, wherein the heating furnace body 10 comprises a sintering cavity 11; a conveying unit 20, wherein the conveying unit 20 is arranged in the sintering cavity 11, and the conveying unit 20 is used for conveying a product 80 to be heated; a heating unit including an air intake device and a heating device 40; the air inlet device is arranged at the bottom of the heating furnace body 10 and comprises an air passage 30, and an air outlet of the air passage 30 is communicated with the sintering cavity 11; the heating devices 40 are provided in plurality, the heating devices 40 are sequentially arranged along the conveying direction of the product 80 to be heated, and the heating devices 40 are used for heating the gas exhausted from the gas outlet; and a wind shielding table 50, wherein the wind shielding table 50 is arranged on the cavity wall 12 of the sintering cavity 11 and positioned at two sides of the conveying unit 20, and the wind shielding table 50 protrudes towards one side of the conveying unit 20 and forms a barrier during the heating and rising processes of the gas.

Referring to fig. 1 and 2, the built-in heating furnace according to the present utility model includes a heating furnace body 10, a conveying unit 20, a heating unit, and a wind shielding table 50. The furnace body 10 includes a sintering chamber 11, and the sintering chamber 11 is used for accommodating various components and a product 80 to be heated. The conveying unit 20 is disposed in the sintering chamber 11, and is used for conveying the product 80 to be heated, and according to different products 80 to be heated, different conveying units 20 can be selected to realize conveying, so long as conveying can be realized. Preferably, a conveying roller is selected as the conveying unit 20 to convey the product 80 to be heated. Preferably, the conveyor conveys 16 products 80 to be heated at a time, and the 16 products 80 to be heated are arranged in a 4×4 stack to ensure production efficiency. The heating unit comprises an air inlet device and a heating device 40, when the product is heated and sintered, the air is conveyed to the inside of the sintering cavity 11 through the air inlet device, and the air is heated through the heating device 40, so that the product is sufficiently and uniformly heated under the action of the heated air, and the quality of the product is ensured. The air inlet device is arranged at the bottom of the heating furnace body 10 and comprises an air passage 30, an air outlet of the air passage 30 is communicated with the sintering cavity 11, and air is conveyed into the sintering cavity 11 through the air passage 30. The gas-transporting member may be selected to be provided integrally with the heating furnace body 10 directly according to actual demands, or may be selected to be provided at another position outside and communicated with the air duct 30 through a pipe or the like, so long as the gas transportation is possible. The caliber of the air passage 30 can be selected according to actual requirements; preferably, on the premise of meeting the requirements, the caliber of the air passage 30 is further enlarged, so that the air inlet efficiency is improved, the requirements of processing 16 products at one time are met, and the production efficiency is ensured. The heating means 40 is provided in plurality, and the heating means 40 is used for heating the gas discharged from the gas outlet. The limit on the number of the heating devices 40 ensures that the gas can be heated more quickly, the production efficiency is ensured, the gas can be heated more fully, and the product quality is ensured. The heating devices 40 are sequentially arranged along the conveying direction of the product 80 to be heated, so as to ensure that the product 80 to be heated can be sufficiently and uniformly heated in the conveying process. Referring to fig. 2 and 3, a wind shielding table 50 is provided on the chamber wall 12 of the sintering chamber 11 at both sides of the conveying unit 20. It should be noted that the position of the wind shielding table 50 can be selected according to actual requirements, such as being disposed above, below, or parallel to the conveying unit 20, etc. The wind shielding table 50 protrudes toward the side where the conveying unit 20 is located, and forms a barrier during heating and rising of the gas. In fig. 3, arrows indicate gases. The heated and rising gas encounters the wind shielding table 50 to be blocked from rising and needs to flow around, so that the heated and rising gas can be heated for a longer time, the temperature of the middle part and the temperature of the two sides are uniform and consistent, and the product quality is ensured. It is conceivable that in conventional kiln heating production processes, the products to be heated at a time are typically four, in small numbers, placed in a 2 x 2 stack, so that uniform heating is relatively easy to achieve. However, as the product yield requirements increase, sixteen products placed in a 4 x 4 stack are heated at a time, the products located in the middle two groups are subjected to a high heating temperature, while the products on both sides, particularly the products near one side of the cavity wall 12 of the sintering cavity 11, are subjected to a low heating temperature. Typically, the temperature in the furnace is about 1200 ℃, and in the case of sixteen products, the temperature difference between the two sides and the middle temperature can be 10 to 20 ℃. Therefore, although the production efficiency is improved, the yield of the product is affected due to the non-uniform temperature in the furnace. In order to overcome the problem of uniformity of temperature in the cavity, the built-in heating furnace of the utility model forms a barrier in the process of heating and rising gas by arranging the wind shielding tables 50 on the cavity walls 12 at both sides of the conveying unit 20. The heated and rising gas encounters the windshield 50 to be blocked from rising and needs to bypass, so that the heated and rising gas can be heated for a longer time, and the temperature of the middle part and the temperature of the two sides are uniform and consistent. The temperature uniformity is good, and the temperature uniformity is improved to +/-4 ℃. The product quality can be ensured while the production efficiency of heating a larger quantity of products and products at one time is improved.

Referring to fig. 3, in the built-in heating furnace according to the present utility model, in some embodiments, the wind shielding table 50 is disposed below the conveying unit 20. By further defining the location of the windshield 50, it is ensured that the gas is preheated before contacting the product 80 to be heated, further ensuring a good heating effect.

Referring to fig. 2, in the built-in heating furnace according to the present utility model, in some embodiments, the heating device 40 includes a first heating part and a second heating part. The first heating means is for effecting heating of the product 80 to be heated in the vertical direction, and the second heating means is for effecting heating of the product 80 to be heated in the horizontal direction. Specifically, the first heating member includes a first horizontal heating rod 41 and a second horizontal heating rod 42, and the first horizontal heating rod 41 and the second horizontal heating rod 42 are both axially and horizontally arranged; a first horizontal heating rod 41 is provided above the conveying unit 20, and a second horizontal heating rod 42 is provided below the conveying unit 20. Through setting up two horizontal heating sticks, guarantee that no matter sintering chamber 11 top, the gas of below can both obtain the heating, guarantee that the intracavity temperature is even to ensure that heating efficiency is unanimous from top to bottom, guarantee that product quality is good. The second heating part comprises a first vertical heating rod 43 and a second vertical heating rod 44, and the first vertical heating rod 43 and the second vertical heating rod 44 are axially and vertically arranged; the first and second vertical heating bars 43 and 44 are disposed at both sides of the conveying unit 20, respectively. Through setting up two vertical heating rods, guarantee that the gas of no matter sintering chamber 11 left side or right side can both obtain the heating, guarantee that the intracavity temperature is even to ensure that heating efficiency is unanimous about, guarantee that product quality is good. Meanwhile, the gas flows in the sintering cavity 11 and can be sufficiently and uniformly heated at all positions, so that the temperature uniformity in the cavity is further improved, and the production efficiency and the product quality of the product are ensured.

In some embodiments, the first vertical heating rod 43 or/and the second vertical heating rod 44 are disposed within the sintering chamber 11. According to actual requirements, it is possible to choose to arrange only the first vertical heating rod 43, only the second vertical heating rod 44, or both the first vertical heating rod 43 and the second vertical heating rod 44 within the sintering chamber 11. This structure can make the contact gas of first heating element more abundant than will vertical heating rod setting in chamber wall 12, guarantees intracavity temperature homogeneity to guarantee the production efficiency and the product quality of product. Meanwhile, the electric heating conversion efficiency is improved, and the energy consumption is saved on the premise of ensuring the temperature.

Referring to fig. 4, in the built-in heating furnace according to the present utility model, in some embodiments, the heating furnace body 10 includes a packing portion 15 and a housing portion 16, and the packing portion 15 is formed by stacking a plurality of refractory bricks and forms the sintering chamber 11; the housing portion 16 is provided around the outside of the stacking portion 15. The housing portion 16 can be made of a material selected from stainless steel, etc., depending on the actual requirements. This structure can guarantee the long service life of heating furnace body 10, and is not fragile. Preferably, the stacking portion 15 is provided in a hollow structure, so that the heat-insulating effect is further improved, thereby ensuring temperature uniformity.

Referring to fig. 2, in the built-in heating furnace according to the present utility model, in some embodiments, a thermal insulation member 17 is provided at a gap between the stacking portion 15 and the housing portion 16. Preferably, the insulating member 17 is provided as insulating cotton. By arranging the heat preservation piece 17, the uniformity of the temperature in the cavity can be further guaranteed. The insulating member 17 can be provided, for example, at a position corresponding to the cavity wall 12, a position corresponding to the cavity ceiling 14, or the like, according to various requirements.

Referring to fig. 2, in some embodiments, the heating furnace according to the present utility model further includes a plurality of groups of beam members, where the plurality of groups of beam members are disposed in the sintering chamber 11 and are sequentially disposed along a conveying direction of the product 80 to be heated. Through setting up the beam member for sintering chamber 11 inside forms individual cell, has reduced the inside space of sintering chamber 11, thereby inside gas is more easily heated, and the temperature homogeneity is good. Each set of the spacer members comprises a first spacer 60 and a second spacer 70, the first spacer 60 being arranged at the bottom 13 of the sintering chamber 11 and the second spacer 70 being arranged at the top 14 of the sintering chamber 11. The structure ensures that the volume of the cavity top 14 and the cavity bottom 13 is reduced, the temperature of the gas is easier to rise, and the production efficiency is improved; good temperature uniformity and high product quality.

Referring to fig. 5, in some embodiments, the second insulating beam 70 includes an insulating member 71 and an insulating fixing member, the insulating member 71 is disposed on the top 14 of the sintering chamber 11, the insulating fixing member is connected to the insulating member 71, and two ends of the insulating fixing member are abutted against the chamber wall 12 of the sintering chamber 11. The heat insulator 71 is used for heat insulation, and the heat insulator fixing member is used for fixing the heat insulator 71. Preferably, the heat insulating member 71 is made of ceramic fiber board, and the ceramic fiber board has light weight, fire resistance, corrosion resistance and good heat insulation effect. Preferably, the heat insulation fixing piece is made of silicon carbide, and the silicon carbide has the advantages of small thermal expansion coefficient, high heat conductivity, high-temperature strength, good slag resistance, capability of forming protective oxidation and the like, and can be well used as an additive with slag resistance and thermal shock stability.

Further, referring to fig. 5, the heat insulation fixing member includes a first heat insulation fixing member 721 and a second heat insulation fixing member 723; the first heat insulation fixing member 721 is connected with the heat insulation member 71, and a convex portion 711 is provided on a surface of the heat insulation member 71 contacting the first heat insulation fixing member 721, and a concave portion 722 adapted to the convex portion 711 is provided on the first heat insulation fixing member 721; by providing the convex portion 711 and the concave portion 722, the first heat insulating fixing member 721 can be stably connected with the heat insulating member 71, so that the structural stability is good, and the service life of the heating furnace is ensured. The second thermally insulating holder 723 is connected to the first thermally insulating holder 721. Preferably, the second heat insulation fixing member 723 is formed as a hollow square tube, so that sliding of the second heat insulation fixing member is avoided, and structural stability and structural strength can be well ensured. Preferably, a third spacer 18 is further provided between the stacking portion 15 and the housing portion 16 to increase the structural strength and structural stability of the entire heating furnace.

The utility model discloses a production system which comprises the built-in heating furnace in any embodiment. The production system according to the present utility model has advantages in that it includes the built-in heating furnace according to the above-described embodiment, and the production system is also all advantageous and will not be repeated.

The working principle of the built-in heating furnace and the production system of the utility model is as follows:

in use, the product 80 to be heated is placed on the conveying unit 20 for conveyance; while gas is fed into the sintering chamber 11 through the gas inlet means. When the gas enters the sintering chamber 11, it is blocked by the wind shielding table 50, and it is necessary to flow around the gas, so that the gas can be heated for a longer period of time. And even if the gas is preheated before the gas contacts the product 80 to be heated, the temperature of the middle and both sides is made uniform and consistent. The heating device 40 fully heats the gas through the first horizontal heating rod 41 and the second horizontal heating rod 42 which are arranged in a pairwise opposite manner, and the first vertical heating rod 43 and the second vertical heating rod 44, so that the gas on the left side or the right side of the sintering cavity 11 is ensured to be heated, the temperature in the cavity is ensured to be uniform, the left and right heating efficiency is ensured to be consistent, and the product quality is ensured to be good. Meanwhile, the gas flows in the sintering cavity 11 and can be sufficiently and uniformly heated at all positions, so that the temperature uniformity in the cavity is further improved, and the production efficiency and the product quality of the product are ensured. The temperature uniformity of the whole heating furnace is good, and the temperature uniformity is improved to +/-4 ℃. The product quality can be ensured while the production efficiency of heating a larger quantity of products and products at one time is improved.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims (10)

1. A built-in heating furnace, comprising:

the heating furnace comprises a heating furnace body, a heating furnace body and a heating furnace, wherein the heating furnace body comprises a sintering cavity;

the conveying unit is arranged in the sintering cavity and is used for conveying the product to be heated;

the heating unit comprises an air inlet device and a heating device; the air inlet device is arranged at the bottom of the heating furnace body and comprises an air passage, and an air outlet of the air passage is communicated with the sintering cavity; the heating devices are arranged in a plurality, and are sequentially arranged along the conveying direction of the product to be heated, and are used for heating the gas exhausted by the gas outlet;

the wind shielding tables are arranged on the cavity wall of the sintering cavity and are positioned on two sides of the conveying unit, and the wind shielding tables protrude towards one side where the conveying unit is located and form a barrier in the gas heating and rising process.

2. The in-line heating furnace according to claim 1, wherein: the wind shielding table is arranged below the conveying unit.

3. The in-line heating furnace according to claim 1, wherein: the heating device comprises a first heating component and a second heating component;

the first heating component comprises a first horizontal heating rod and a second horizontal heating rod, and the first horizontal heating rod and the second horizontal heating rod are axially and horizontally arranged; the first horizontal heating rod is arranged above the conveying unit, and the second horizontal heating rod is arranged below the conveying unit;

the second heating component comprises a first vertical heating rod and a second vertical heating rod, and the first vertical heating rod and the second vertical heating rod are axially and vertically arranged; the first vertical heating rod and the second vertical heating rod are respectively arranged on two sides of the conveying unit.

4. A built-in heating furnace according to claim 3, wherein: the first vertical heating rod or/and the second vertical heating rod are arranged in the sintering cavity.

5. The in-line heating furnace according to claim 1, wherein: the heating furnace body comprises a stacking part and a shell part, wherein the stacking part is formed by stacking a plurality of refractory bricks and forms the sintering cavity; the shell part is arranged on the outer side of the stacking part in a surrounding mode.

6. The in-line heating furnace according to claim 5, wherein: and a heat preservation piece is arranged between the stacking part and the shell part.

7. The built-in heating furnace according to claim 1, further comprising a plurality of groups of barrier members, wherein the barrier members are provided in plural groups, the barrier members are all provided in the sintering chamber and are sequentially provided along the conveying direction of the product to be heated, each group of barrier members comprises a first barrier and a second barrier, the first barrier is provided at the bottom of the sintering chamber, and the second barrier is provided at the top of the sintering chamber.

8. The in-line heating furnace according to claim 7, wherein: the second isolation beam comprises a heat insulation piece and a heat insulation fixing piece, wherein the heat insulation piece is arranged on the top of the sintering cavity, the heat insulation fixing piece is connected with the heat insulation piece, and two ends of the heat insulation fixing piece are abutted to the wall of the sintering cavity.

9. The in-line heating furnace according to claim 8, wherein: the heat insulation fixing piece comprises a first heat insulation fixing piece and a second heat insulation fixing piece; the first heat insulation fixing piece is connected with the heat insulation piece, a convex part is arranged on the surface, which is contacted with the first heat insulation fixing piece, of the heat insulation piece, and a concave part which is matched with the convex part is arranged on the first heat insulation fixing piece; the second heat insulation fixing piece is connected with the first heat insulation fixing piece.

10. A production system comprising the built-in heating furnace according to any one of claims 1 to 9.