CN202836198U - Box-type heating furnace - Google Patents
Box-type heating furnace Download PDFInfo
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- CN202836198U CN202836198U CN 201220442194 CN201220442194U CN202836198U CN 202836198 U CN202836198 U CN 202836198U CN 201220442194 CN201220442194 CN 201220442194 CN 201220442194 U CN201220442194 U CN 201220442194U CN 202836198 U CN202836198 U CN 202836198U
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Abstract
The utility model relates to a box-type electric furnace, in particular to a box-type electric heating furnace which is used for dewaxing and roasting in fusible pattern gypsum mould casting process and capable of reaching 1200 DEG C in heating temperature. The box-type electric heating furnace comprises a furnace body, a furnace door, and a temperature control device. Heat-preservation fiber plates are laid on the inner surface of the furnace body; a furnace bottom plate and a furnace top plate are arranged inside a furnace hearth, heating plates are respectively arranged on the rest three surfaces, electric resistance wires are buried inside the heating plates, a furnace door seal cover is arranged at a furnace hearth opening, and the temperature control device is arranged inside a conjoined electric control cabinet arranged below the furnace body. The electric resistance wires are installed in the heating plates in a sealing mode, outgoing lines of the electric resistance wires are electrically connected with the temperature control device, and the heating plates are inlaid between grooves formed in the furnace bottom plate and grooves formed in the furnace top plate. The box-type heating furnace is a box-type heating furnace which is used for dewaxing and roasting in the fusible pattern gypsum mould casting process and capable of reaching 1200 DEG C in the heating temperature. The totally enclosed type ceramic heating plates adopted for the heating furnace are even in heating, good in inoxidizability, high in heating efficiency, energy-saving, safe, and convenient to install and maintain.
Description
Technical field
The utility model relates to a kind of cabinet-type electric furnace, especially a kind of in plaster molding for investment casting technique, be used for dewaxing and roasting, heating-up temperature can reach 1200 ℃ box electric furnace.
Background technology
The wax-pattern that uses in plaster molding for investment casting technique is to record casting mold with gypsum slurry, through solidify, pouring cast part again after the drying, dewaxing, roasting.The normal small-sized box type electric furnace that adopts is finished dewaxing and calcining process in the production.The heating plate (Fig. 3, Fig. 4) that the cabinet-type electric furnace of prior art is used is embedded in the heating plate groove (Fig. 3 .A. exposes the resistance wire type) or is penetrated that (wearing the resistance wire type in Fig. 4 .B.) forms in the heating plate hole by the resistance wire of reeling.No matter the resistance wire of cabinet-type electric furnace embeds the heating plate groove and still wears in the heating hole, after all directly and contact with air.Under hot environment, inhomogeneous variation etc. occurs in very easily oxidation of resistance wire, softening transform, resistance, can cause non-uniform temperature in the burner hearth, power consumption height, even early fracture occurs, and has both affected processing quality, has shortened again the electric furnace working life.
Summary of the invention
The purpose of this utility model be to overcome the deficiencies in the prior art and provide a kind of in plaster molding for investment casting technique, be used for dewaxing and roasting, heating-up temperature can reach 1200 ℃ box type heater.The purpose of this utility model can realize by following measures:
A kind of box type heater of the present utility model, comprise body of heater, fire door, attemperating unit (Fig. 1, Fig. 2), the body of heater inner face is laid with heat-insulating fiberboard, be provided with drop-bottom, stove roof plate in the burner hearth, its excess-three face is provided with heating plate, resistance wire is embedded in heating plate inside, and fire door is sealed on stockhole, and attemperating unit is arranged in the disjunctor electric cabinet of body of heater below.Described resistance wire is encapsulated in heating plate inside, and the resistance wire lead-out wire is electrically connected with attemperating unit; Described heating plate inlays between the groove of drop-bottom and stove roof plate.
Be laid with heat-insulating fiberboard in the described fire door, be fixedly connected with heating plate on the heat-insulating fiberboard.
The heat radiation surface of described heating plate is provided with far infrared glaze layer.
Box type heater of the present utility model, be a kind of in plaster molding for investment casting technique, be used for dewaxing and roasting, heating-up temperature can reach 1200 ℃ box type heater; The totally enclosed type ceramic heating plate that this heating furnace adopts, heating is even, good in oxidation resistance, heating efficiency is high, energy-saving safety, and installation and maintenance are convenient.
Description of drawings
Fig. 1 is heating furnace front schematic view of the present utility model;
Fig. 2 is heating plate of the present utility model side and generalized section;
Fig. 3 is a kind of schematic diagram of heating plate orifice plate end face of common prior art;
Fig. 4 is the schematic diagram of the heating plate orifice plate end face of another common prior art.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
As shown in Figure 1, a kind of box type heater of the present utility model, comprise body of heater 1, fire door 6, attemperating unit 7, body of heater 1 inner face is laid with heat-insulating fiberboard 2, be provided with drop-bottom 4, stove roof plate 5 in the burner hearth, its excess-three face is provided with heating plate 3, and resistance wire 8 is embedded on the heating plate 3, fire door 6 is sealed on stockhole, and attemperating unit 7 is arranged in the disjunctor electric cabinet of body of heater 1 below.Resistance wire 8 is embedded in heating plate 3 inside, and the lead-out wire 11 of resistance wire 8 is electrically connected with attemperating unit 7; Heating plate 3 inlays 10 of the grooves of drop-bottom 4 and stove roof plate 5.
Be laid with heat-insulating fiberboard 2 in the fire door 6, be fixedly connected with heating plate 3 on the heat-insulating fiberboard 2.
As shown in Figure 2, the heat radiation surface of heating plate 3 is provided with far infrared glaze layer 9; Resistance wire shown in the part sectioned view 8 is encapsulated in heating plate 3 inner body moulding, and the lead-out wire 11 of resistance wire 8 is electrically connected with attemperating unit 7.
As shown in Figure 3, two kinds of common prior art heating plates.No matter the resistance wire of winding is embedded in the heating plate groove (exposing the resistance wire type) or penetrates in the heating plate orifice plate (wearing the resistance wire type in the B.), after all resistance wire all directly and contact with air, under the hot environment, very easily oxidation, service life is short.
In the specific implementation, will be made as stainless steel body of heater 1 by on open, lay insulation fibre felt 2 rear placement drop-bottoms 4 in the bottom; The left and right sides and rear side at body of heater are laid respectively insulation fibre felt 2, insert respectively three heating plates 3 along the groove 10 of drop-bottom 4, and the far infrared glaze layer 9 of heating plate 3 is in stove; The groove 10 of stove roof plate 5 is aimed at three heating plates 3 be in place, close body of heater 1 by top behind the laying insulation fibre felt 2.Insert thermocouple 12 at the body of heater rear side, the terminals 11 of heating plate are connected with attemperating unit 7.
For making more uniform temperature in the heating furnace, the thermal efficiency is higher, can lay first insulation fibre felt 2 at fire door 6, then is fixedly connected with heating plate 3; Terminals 11 are connected with attemperating unit 7, thereby realize the simultaneously Based Intelligent Control of heating of fusible pattern plaster mold heating furnace four sides.
Box type heater of the present utility model, be a kind of in plaster molding for investment casting technique, be used for dewaxing and roasting, heating-up temperature can reach 1200 ℃ box type heater; The totally-enclosed flush type ceramic heating plate that this heating furnace adopts, heating is even, good in oxidation resistance, heating efficiency is high, energy-saving safety, and installation and maintenance are convenient.
Box type heater of the present utility model adopts totally-enclosed flush type ceramic heating plate, resistance wire integral body is embedded in the heat resisting ceramic materials, only draw two terminals and connect attemperating unit, so resistance wire is complete and air is isolated, has very excellent high temperature oxidation resistance, and not yielding after integrated resistance wire is heated for a long time, prolong several times more than than prior art its service life.The far infrared glaze layer of heating plate inboard can reduce the non-uniform temperature degree of heating plate greatly, reduces heat loss, makes the energy-saving effect of heating furnace obvious, can improve 10%～25% than prior art.Owing to adopt integrated technique to make the Thickness Ratio prior art of heating plate reduce 60%, increased the dischargeable capacity of heating furnace.Heating plate inlays the air-tightness that has further improved burner hearth between drop-bottom and stove roof plate groove, so that the even and energy efficient of temperature in the burner hearth; The polylith heating plate is installed on around the heating furnace, makes gypsum mould dewaxing and the each point temperature such as intensification, insulation and cooling in roasting stage even, simple to operate by intelligent temperature control device.The groove fit of the heating plate in the utility model and drop-bottom and stove roof plate does not need to fix with heat-resisting bolt in addition, and is easy to installation and maintenance.
It is to be noted; although to the utility model a kind of in plaster molding for investment casting technique, be used for dewaxing and roasting, heating-up temperature can reach 1200 ℃ box electrothermal furnace heating furnace and be described in detail; but with regard to those skilled in the art, the similar modification of class Sihe of making on this basis all should belong to protection domain of the present utility model.
Claims (3)
1. box type heater, comprise body of heater, fire door, attemperating unit, the body of heater inner face is laid with heat-insulating fiberboard, be provided with drop-bottom, stove roof plate in the burner hearth, its excess-three face is provided with heating plate, and resistance wire is embedded in heating plate inside, fire door is sealed on stockhole, attemperating unit is arranged in the disjunctor electric cabinet of body of heater below, and it is characterized in that: described resistance wire is encapsulated in heating plate inside, and the resistance wire lead-out wire is electrically connected with attemperating unit; Described heating plate inlays between the groove of drop-bottom and stove roof plate.
2. a kind of box type heater according to claim 1 is characterized in that: be laid with heat-insulating fiberboard in the described fire door, be fixedly connected with heating plate on the heat-insulating fiberboard.
3. a kind of box type heater according to claim 1, it is characterized in that: the heat radiation surface of described heating plate is provided with far infrared glaze layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220442194 CN202836198U (en) | 2012-08-31 | 2012-08-31 | Box-type heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220442194 CN202836198U (en) | 2012-08-31 | 2012-08-31 | Box-type heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202836198U true CN202836198U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220442194 Expired - Fee Related CN202836198U (en) | 2012-08-31 | 2012-08-31 | Box-type heating furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN202836198U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374191A (en) * | 2014-11-04 | 2015-02-25 | 罗少忠 | Ceramic sintering electric kiln furnace |
| CN104374192A (en) * | 2014-11-04 | 2015-02-25 | 罗少忠 | Multifunctional ceramic firing kiln and manufacturing method of porcelain thereof |
| CN106244789A (en) * | 2016-08-30 | 2016-12-21 | 赫菲斯热处理系统江苏有限公司 | A kind of box type heater |
| CN109883199A (en) * | 2018-12-17 | 2019-06-14 | 浙江智造热成型科技有限公司 | Large-scale dustless ceramic heat furnace |
| CN110798917A (en) * | 2019-11-08 | 2020-02-14 | 贵州云弗电炉制造有限公司 | Heating plate for electric furnace and preparation method thereof |
-
2012
- 2012-08-31 CN CN 201220442194 patent/CN202836198U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374191A (en) * | 2014-11-04 | 2015-02-25 | 罗少忠 | Ceramic sintering electric kiln furnace |
| CN104374192A (en) * | 2014-11-04 | 2015-02-25 | 罗少忠 | Multifunctional ceramic firing kiln and manufacturing method of porcelain thereof |
| CN106244789A (en) * | 2016-08-30 | 2016-12-21 | 赫菲斯热处理系统江苏有限公司 | A kind of box type heater |
| CN106244789B (en) * | 2016-08-30 | 2018-06-01 | 赫菲斯热处理系统江苏有限公司 | A kind of box type heater |
| CN109883199A (en) * | 2018-12-17 | 2019-06-14 | 浙江智造热成型科技有限公司 | Large-scale dustless ceramic heat furnace |
| CN110798917A (en) * | 2019-11-08 | 2020-02-14 | 贵州云弗电炉制造有限公司 | Heating plate for electric furnace and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20160831 |