Thermal insulation structure of electric kiln body

Abstract

The utility model relates to the technical field of electric kilns, in particular to a heat preservation structure of an electric kiln body, which comprises an outer shell, a heat insulation furnace pipe formed by a heat preservation base plate is arranged and connected in the outer shell, and an electric heating body is arranged on the inner wall of the heat insulation furnace pipe. A heat preservation layer structure is arranged between the inner wall of the outer shell and the outer portion of the heat insulation furnace pipe and comprises a vacuum heat preservation plate, and the inner surface of the vacuum heat preservation plate is fixedly connected with a heat preservation cushion layer. The heat preservation layer structure composed of the vacuum heat preservation plate, the heat preservation cushion layer and the high-temperature-resistant heat insulation layer is arranged between the outer shell and the heat insulation furnace pipe, the heat preservation capacity of the electric kiln body can be greatly improved, and meanwhile the heat preservation layer structure and the outer shell are connected through the first high-temperature-resistant rubber connecting layer; and a capability for deformation is formed between the outer shell and the heat insulation furnace pipe, so that cracks of the heat insulation furnace pipe caused by expansion caused by heat and contraction caused by cold of the electric kiln body are avoided.

Description

Technical Field

[0001] This utility model relates to the field of electric kiln technology, specifically to an electric kiln body insulation structure. Background Technology

[0002] An electric kiln is a device that uses electricity as an energy source for heat treatment and smelting. It uses the heating effect of resistance to heat materials to achieve purposes such as drying, heat treatment and melting.

[0003] In the prior art, such as the ceramic firing electric kiln proposed in patent application number "201420653715.2", a simple and reasonable structure, high heating efficiency, significant energy-saving effect and long service life are provided. It includes a furnace body, a furnace door and its corresponding electric heating device, a heat insulation lining and a corresponding electric heating element provided in the furnace body, and the heat insulation lining includes a heat-insulating furnace liner provided in the furnace body.

[0004] However, in the aforementioned patent application, the electric kiln is kept warm by a single insulated inner liner. After prolonged use and frequent heating and cooling, the insulated inner liner is prone to deformation due to thermal expansion and contraction. Since the furnace body and the inner liner are directly connected, there is a lack of deformation capacity between the insulated inner liner and the furnace body, which in turn leads to cracks in the insulated furnace liner. Utility Model Content

[0005] The purpose of this utility model is to provide a heat preservation structure for an electric kiln body to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An electric kiln body insulation structure includes an outer shell, an insulated furnace chamber made of insulation pads is connected inside the outer shell, an electric heating element is provided on the inner wall of the insulated furnace chamber, and an insulation layer structure is provided between the inner wall of the outer shell and the outer side of the insulated furnace chamber. The insulation layer structure includes a vacuum insulation board, an insulation pad is fixedly connected to the inner surface of the vacuum insulation board, and a high-temperature resistant insulation layer is fixedly connected to the outer surface of the vacuum insulation board.

[0008] The outer surface of the high-temperature resistant insulation layer is fixedly connected to a first high-temperature resistant rubber connecting layer, the outer surface of the first high-temperature resistant rubber connecting layer is fixedly connected to the inner wall of the outer shell, the inner surface of the insulation pad layer is fixedly connected to a second high-temperature resistant rubber connecting layer, and the inner surface of the second high-temperature resistant rubber connecting layer is fixedly connected to the outer surface of the heat insulation furnace liner.

[0009] Preferably, the thickness of both the first high-temperature resistant rubber connecting layer and the second high-temperature resistant rubber connecting layer is 0.3 mm.

[0010] Preferably, the heat preservation pad layer is made of diatomite material, the thickness of the heat preservation pad layer is 2cm, and the high-temperature-resistant heat insulation layer is made of nano heat insulation microporous material, and the thickness of the high-temperature-resistant heat insulation layer is 1.5cm.

[0011] Preferably, the vacuum heat preservation plate comprises a vacuum heat insulation substrate, an inner surface of the vacuum heat insulation substrate is provided with a heat reflection coating, and an outer surface of the vacuum heat insulation substrate is provided with a high-temperature-resistant heat insulation coating.

[0012] Preferably, the outer shell is provided with an openable furnace door, the furnace door is connected with a heat preservation pad plate close to one side of the outer shell, a bottom support is fixedly connected to the bottom of the outer shell, and an elastic base is fixedly connected to the bottom of the bottom support.

[0013] Preferably, the outer shell is provided with an openable furnace door, the furnace door is connected with a heat preservation pad plate close to one side of the outer shell, a bottom support is fixedly connected to the bottom of the outer shell, and an elastic base is fixedly connected to the bottom of the bottom support.

[0014] The electric kiln body has the advantages that:

[0015] The heat preservation layer structure composed of the vacuum heat preservation plate, the heat preservation pad layer and the high-temperature-resistant heat insulation layer is arranged between the outer shell and the heat insulation furnace liner, so that the heat preservation capacity of the electric kiln body is greatly improved, the heat preservation layer structure and the outer shell are connected through the first high-temperature-resistant rubber connecting layer, and the capacity of deformation is formed between the outer shell and the heat insulation furnace liner, so that the thermal expansion and cold contraction of the electric kiln body does not cause cracks in the heat insulation furnace liner. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, other drawings can also be obtained by those skilled in the art without creative labor.

[0017] Figure 1 is a schematic diagram of the overall structure of the present application;

[0018] Figure 2 is a rear view of the outer shell in the present application; Figure 1

[0019] Figure 3 is a schematic diagram of the structure inside the outer shell in the present application; Figure 2

[0020] Figure 4 is a schematic diagram of the structure of the heat preservation layer structure in the present application; Figure 3

[0021] ​​​Figure 5 The utility model discloses Figure 4 Vacuum insulation board's structural diagram.

[0022] The reference signs in the drawing are as follows:

[0023] 1, external shell, 2, heat insulation furnace core, 201, electric heating body, 3, heat preservation layer structure, 301, vacuum insulation board, 3011, vacuum heat insulation substrate, 3012, heat reflection coating, 3013, high-temperature resistant insulation coating, 302, heat preservation pad layer, 303, high-temperature resistant insulation layer, 4, first high-temperature resistant rubber connecting layer, 5, second high-temperature resistant rubber connecting layer, 6, furnace door, 7, bottom support piece, 8, elastic base, 9, metal sleeve. Specific implementation

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] A kind of electric kiln body heat preservation structure, including external shell 1, the inside of the external shell 1 is connected with the heat insulation furnace core 2 being formed by heat preservation pad, the inner wall of heat insulation furnace core 2 is provided with electric heating body 201, the inner wall of external shell 1 and the outside between heat insulation furnace core 2 are provided with heat preservation layer structure 3, and heat preservation layer structure includes vacuum insulation board 301, the inner surface of vacuum insulation board 301 is fixedly connected with heat preservation pad layer 302, and the outer surface of vacuum insulation board 301 is fixedly connected with high-temperature resistant insulation layer 303;

[0026] The outer surface of the high-temperature resistant insulation layer 303 is fixedly connected with the first high-temperature resistant rubber connecting layer 4, the outer surface of the first high-temperature resistant rubber connecting layer 4 is fixedly connected with the inner wall of the external shell 1, the inner surface of the heat preservation pad layer 302 is fixedly connected with the second high-temperature resistant rubber connecting layer 5, and the inner surface of the second high-temperature resistant rubber connecting layer 5 is fixedly connected with the outer surface of the heat insulation furnace core 2.

[0027] As Figure 1 And Figure 3 Heat insulation furnace core 2 and external shell 1 are the structure of electric kiln body in prior art, and every face in external shell 1 has heat preservation layer structure 3 and heat insulation furnace core 2.

[0028] The thickness of the first high-temperature resistant rubber connecting layer 4 and the second high-temperature resistant rubber connecting layer 5 is 0.3mm.

[0029] As Figure 3 And Figure 4The material of the first high-temperature-resistant rubber connecting layer 4 and the second high-temperature-resistant rubber connecting layer 5 is fluorine rubber, which is introduced by fluorine atoms, and can endow the rubber with excellent heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance.

[0030] The heat preservation pad layer 302 is made of diatomite, and the thickness of the heat preservation pad layer 302 is 2 cm. The high-temperature-resistant heat insulation layer 303 is made of nano heat insulation microporous material, and the thickness of the high-temperature-resistant heat insulation layer 303 is 1.5 cm.

[0031] As Figure 3 and Figure 4 The heat preservation pad layer 302 is made of diatomite, which has the characteristics of high porosity, high-temperature resistance, good heat preservation performance, and small density. The use of this material can reduce heat loss, reduce fuel consumption, reduce the thickness of the furnace wall, reduce the engineering cost, shorten the turnover time of the kiln, and improve the production efficiency.

[0032] The main component of the nano heat insulation microporous material is nano silica, and the gap between the nano silica is less than 60 nm, which is less than the space required for the thermal motion of air molecules, and the air cannot generate heat transfer in the gap.

[0033] The vacuum heat preservation plate 301 comprises a vacuum heat insulation substrate 3011, the inner surface of the vacuum heat insulation substrate 3011 is provided with a heat reflecting coating 3012, and the outer surface of the vacuum heat insulation substrate 3011 is provided with a high-temperature-resistant heat insulation coating 3013.

[0034] As Figure 4 and Figure 5 The vacuum layer is arranged in the vacuum heat insulation substrate 3011 to realize vacuum heat insulation. The heat reflecting coating comprises water, acrylic emulsion, hollow glass microbeads, pigment, titanium dioxide, aluminum silicate, calcium carbonate, polyacrylic acid sodium, heat insulation synergist and antifreeze agent, which can avoid the accumulation of heat on the surface of the vacuum heat insulation substrate 3011 and the temperature rise. The high-temperature-resistant heat insulation coating 3013 further improves the high-temperature-resistant heat insulation capacity of the vacuum heat insulation substrate 3011.

[0035] The outer shell 1 is provided with an openable furnace door 6, and the furnace door 6 is connected with a heat preservation pad plate close to one side of the outer shell 1. The bottom of the outer shell 1 is fixedly connected with a bottom support 7, and the bottom of the bottom support 7 is fixedly connected with an elastic base 8.

[0036] As Figure 1 and Figure 2 The bottom support 7 provides support for the outer shell 1, and the elastic base 8 can reduce the impact force when the outer shell 1 falls to the ground.

[0037] The external shell 1 is fixedly connected with four metal sleeves 9 away from one side of the furnace door 6, the four metal sleeves 9 are arranged at four corners of the external shell 1 respectively, and the metal sleeve 6 is used for assisting in fixing the external shell 1.

[0038] As Figure 1 And Figure 2 The external shell 1 can be fixed by penetrating the metal sleeve 6 with an external metal rod, or the external shell 1 can be hoisted by penetrating the metal sleeve 6 with a hoisting device rope, so that the external shell 1 is convenient to transport and fix.

[0039] Compared with the related art, the electric kiln body heat preservation structure has the following beneficial effects:

[0040] The external shell 1 and the heat insulation furnace liner 2 are connected by the first high-temperature-resistant rubber connecting layer 4, and the heat insulation layer structure 3 formed between the external shell 1 and the heat insulation furnace liner 2 has the ability to deform, so that the electric kiln body heat preservation structure can avoid the heat expansion and cold contraction of the electric kiln body from causing the heat insulation furnace liner 2 to crack.

[0041] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements, and these changes and improvements all fall within the scope of the utility model.

Claims

1. An electric kiln body insulation structure comprising an outer shell (1), characterized in that, The outer shell (1) is provided with an insulated furnace liner (2) made of a heat insulation pad. The inner wall of the insulated furnace liner (2) is provided with an electric heating element (201). An insulation layer structure (3) is provided between the inner wall of the outer shell (1) and the outer side of the insulated furnace liner (2). The insulation layer structure includes a vacuum insulation board (301). An insulation pad layer (302) is fixedly connected to the inner surface of the vacuum insulation board (301). A high-temperature resistant insulation layer (303) is fixedly connected to the outer surface of the vacuum insulation board (301). The outer surface of the high-temperature resistant heat insulation layer (303) is fixedly connected to a first high-temperature resistant rubber connecting layer (4), the outer surface of the first high-temperature resistant rubber connecting layer (4) is fixedly connected to the inner wall of the outer shell (1), the inner surface of the heat insulation pad layer (302) is fixedly connected to a second high-temperature resistant rubber connecting layer (5), and the inner surface of the second high-temperature resistant rubber connecting layer (5) is fixedly connected to the outer surface of the heat insulation furnace liner (2).

2. An electric kiln body insulation structure according to claim 1, wherein The thickness of the first high-temperature resistant rubber connecting layer (4) and the second high-temperature resistant rubber connecting layer (5) is 0.3 mm.

3. An electric kiln body insulation structure according to claim 1 wherein, The thermal insulation pad (302) is made of diatomaceous earth and has a thickness of 2cm. The high-temperature heat insulation layer (303) is made of nano-insulation microporous material and has a thickness of 1.5cm.

4. An electric kiln body insulation structure according to claim 1 wherein, The vacuum insulation board (301) includes a vacuum insulation substrate (3011), the inner surface of the vacuum insulation substrate (3011) is provided with a heat-reflective coating (3012), and the outer surface of the vacuum insulation substrate (3011) is provided with a high-temperature resistant insulation coating (3013).

5. An electric kiln body insulation structure according to claim 1 wherein, The outer shell (1) is provided with an openable furnace door (6). The furnace door (6) is connected to a heat insulation pad on the side near the outer shell (1). The bottom of the outer shell (1) is fixedly connected to a bottom support (7). The bottom of the bottom support (7) is fixedly connected to an elastic base (8).

6. An electric kiln body insulation structure according to claim 5 wherein, Four metal sleeves (9) are fixedly connected to the side of the outer shell (1) away from the furnace door (6). The four metal sleeves (9) are respectively set at the four corners of the outer shell (1). The metal sleeves (9) are used to assist in fixing the outer shell (1).

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