CN203489685U - Lower-portion submerged heating and heat-preserving furnace - Google Patents
Lower-portion submerged heating and heat-preserving furnace Download PDFInfo
- Publication number
- CN203489685U CN203489685U CN201320554810.2U CN201320554810U CN203489685U CN 203489685 U CN203489685 U CN 203489685U CN 201320554810 U CN201320554810 U CN 201320554810U CN 203489685 U CN203489685 U CN 203489685U
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- thermal insulation
- protection tube
- immersion heating
- fixed
- insulation stove
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Abstract
The utility model discloses a lower-portion submerged heating and heat-preserving furnace, which comprises a protection pipe, an inner compression barrel and an outer compression barrel, wherein the protection pipe is inserted into a furnace pipe of the lower-portion submerged heating and heat-preserving furnace; conical sealing flanges are fixed on the end portion of the protection pipe; the sealing flanges are positioned in protection pipe insertion holes of the furnace pipe; the inner compression barrel is fixed on a furnace shell of the lower-portion submerged heating and heat-preserving furnace, and the end portion of the inner compression barrel is pressed against the end face of the protection pipe along the circumferential direction; the outer compression barrel is sleeved outside the inner compression barrel, and is fixed on the furnace shell; one end of the outer compression barrel is provided with a bottom plate with ventilation holes, and the bottom plate is pressed against the end face of each conical sealing flange along the circumferential direction. In the lower-portion submerged heating and heat-preserving furnace provided by the utility model, the outer compression barrel and the inner compression barrel play roles achieving dual seal, and liquid metal can be completely prevented from leaking out of apertures of the conical sealing flanges and entering the protection pipe, thereby preventing a heater from being burnt down by high-temperature liquid metal.
Description
Technical field
The utility model relates to heating and thermal insulation equipment technical field, more particularly, relates to a kind of bottom immersion heating and thermal insulation stove.
Background technology
Bottom immersion heating and thermal insulation stove is for the cast insulation of non-ferrous metal, particularly aluminium alloy.
Refer to Fig. 1, bottom immersion heating and thermal insulation stove comprises furnace shell 01, is positioned at the presintering flue of furnace shell 01, and is installed in the heater in protection tube 05; Wherein, in presintering flue, be provided with moist closet, and itself and furnace shell 01 forms furnace wall; Protection tube 05 passes bottom, furnace wall, and in moist closet, corresponding, on furnace shell 01, have protection tube breach, flue is provided with protection tube plug-in opening; Above-mentioned protection tube plug-in opening is bellmouth, and its area of section is reduced gradually outward by flue in flue; Protection tube 05 end is fixed with the cone seal flange 04 coordinating with above-mentioned protection tube plug-in opening; Between above-mentioned flue and furnace shell 01, be provided with circle at protection tube breach heat preservation sandwich layer 02 around; The end of above-mentioned protection tube 05 is held out against by one end of tubular muff 03; Tubular muff 03 is positioned at the cavity at heat preservation sandwich layer 02 middle part, and its other end is held out against by the ring flange being fixed on outside furnace shell 01.
Above-mentioned bottom immersion heating and thermal insulation stove is after long-time use; its cone seal flange 04 suffers high temperature for a long time; and repeated multiple times expanding with heat and contract with cold; easily go out to crack; cause crackle that the liquid metal of insulation puts by cone seal to ooze out flue outer and flow in protection tube 05, cause heater to be burnt.
In sum, how to provide a kind of bottom immersion heating and thermal insulation stove, the crackle with the liquid metal of avoiding insulation by cone seal flange enters in protection tube, prevents that heater from being burnt, and is those skilled in the art's problem demanding prompt solutions.
Utility model content
In view of this; the utility model provides a kind of bottom immersion heating and thermal insulation stove, and it has interior clamping cylinder and external compression cylinder, and dual-seal can be provided; the liquid metal of avoiding insulation is arrived in protection tube by the crack of cone seal flange, prevents that the heater in protection tube from being burnt.
For achieving the above object, the utility model provides following technical scheme:
A bottom immersion heating and thermal insulation stove, comprising:
Be inserted into the protection tube on the flue of described bottom immersion heating and thermal insulation stove, be fixed with cone seal flange outside the end of described protection tube, described cone seal flange is positioned at the protection tube plug-in opening of described flue;
Be fixed on the interior clamping cylinder on the furnace shell of described bottom immersion heating and thermal insulation stove, the end face of described interior clamping cylinder is along circumferentially withstanding on the end face of described protection tube; With
Be fixed on described furnace shell, and be enclosed within the external compression cylinder outside described interior clamping cylinder, the end near described protection tube on described external compression cylinder is provided with the base plate with open-work, and described base plate is along circumferentially withstanding on the end face of described cone seal flange.
Preferably, in the immersion heating and thermal insulation stove of above-mentioned bottom, the axis of described interior clamping cylinder and the dead in line of described protection tube.
Preferably, in the immersion heating and thermal insulation stove of above-mentioned bottom, the cross section of described interior clamping cylinder is all identical with shape, the size of the cross section of described protection tube.
Preferably, in the immersion heating and thermal insulation stove of above-mentioned bottom, outside the end of described interior clamping cylinder, be fixed with the limiting section that can be stuck in described through-hole position.
Preferably, in the immersion heating and thermal insulation stove of above-mentioned bottom, described external compression cylinder is coaxial with described protection tube.
Preferably, in the immersion heating and thermal insulation stove of above-mentioned bottom, described external compression cylinder is fixed with the first ring flange away from the end of described protection tube, and described the first ring flange is fixed on outside described furnace shell by fixture.
Preferably, in the immersion heating and thermal insulation stove of above-mentioned bottom, the end away from described protection tube on described interior clamping cylinder is fixed with the second ring flange, and described the second ring flange is fixed on described the first ring flange by fixture.
Preferably, in the immersion heating and thermal insulation stove of above-mentioned bottom, the heat preservation sandwich layer of described bottom immersion heating and thermal insulation stove is hard calcium carbonate flaggy.
Preferably, in the immersion heating and thermal insulation stove of above-mentioned bottom, described hard calcium carbonate flaggy is fixed on described flue, and is provided with sealant between described hard calcium carbonate flaggy and described furnace shell.
Preferably, in the immersion heating and thermal insulation stove of above-mentioned bottom, also comprise the hard calcium silicates sheet frame being closely inlaid in described flue; Described hard calcium silicates flaggy is fixed on described hard calcium silicates sheet frame.
The utility model provides a kind of bottom immersion heating and thermal insulation stove, and it comprises protection tube, interior clamping cylinder and external compression cylinder, and wherein, protection tube is inserted on the flue of this bottom immersion heating and thermal insulation stove, and the end of this protection tube is fixed with cone seal flange; Sealing flange is positioned at the protection tube plug-in opening of flue; Interior clamping cylinder is fixed on the furnace shell of this bottom immersion heating and thermal insulation stove, and its end face is along circumferentially withstanding on the end face of protection tube; External compression jacket casing, outside interior clamping cylinder, and is fixed on furnace shell; One end of above-mentioned external compression cylinder is provided with the base plate with open-work, and this base plate is along circumferentially withstanding on the end face of cone seal flange.
In the bottom immersion heating and thermal insulation stove that the utility model provides, be provided with external compression cylinder and interior clamping cylinder, wherein, the base plate of external compression cylinder is along circumferentially withstanding on the end face of cone seal flange, can reduce the amount liquid metal oozing out in the crackle of cone seal flange, avoid liquid metal to ooze out in the crackle of cone seal flange even completely; Simultaneously; the end face of interior clamping cylinder is along circumferentially withstanding on the end of protection tube; reach the effect of the mouth of pipe of shutoff protection tube, can avoid liquid metal that the crackle by cone seal flange oozes out by the gap between cone seal flange and base plate, to enter the mouth of pipe that arrives protection tube after external compression sleeve.
To sum up; in the bottom immersion heating and thermal insulation stove that the utility model provides; external compression cylinder and interior clamping cylinder have played dual-seal effect, can avoid liquid metal to be oozed out in rear arrival protection tube by the gap of cone seal flange completely, and then have avoided heater to be burnt by the liquid metal of high temperature.
In addition; in the bottom immersion heating and thermal insulation stove that the utility model provides; external compression cylinder holds out against cone seal flange; can make cone seal flange and flue close contact; and then reduce and avoid liquid metal to be oozed out by the gap between cone seal flange and flue even completely; prevent that above-mentioned liquid metal from entering (clamping cylinder place in arriving) in external compression cylinder; meanwhile, interior clamping cylinder can avoid the above-mentioned liquid metal being oozed out by the gap of cone seal flange and flue to arrive in protection tube behind the gap by between external compression cylinder and cone seal flange.Therefore; in the bottom immersion heating and thermal insulation stove that the utility model provides; the dual sealing functions of interior clamping cylinder and external compression cylinder can also avoid liquid metal to be oozed out in rear arrival protection tube by the gap between cone seal flange and flue, has further improved the security of protection tube internal heater.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of prior art middle and lower part immersion heating and thermal insulation stove;
The structural representation of the bottom immersion heating and thermal insulation stove that Fig. 2 provides for the utility model embodiment;
Fig. 3 is the cutaway view of A-A in Fig. 2;
Fig. 4 is the cutaway view of B-B in Fig. 2;
The main TV structure schematic diagram of the external compression cylinder that Fig. 5 provides for the utility model embodiment;
The plan structure schematic diagram of the external compression cylinder that Fig. 6 provides for the utility model embodiment;
The cutaway view of the interior clamping cylinder that Fig. 7 provides for the utility model embodiment;
The plan structure schematic diagram of the interior clamping cylinder that Fig. 8 provides for the utility model embodiment;
Wherein, in Fig. 2-Fig. 8:
The specific embodiment
The utility model embodiment discloses a kind of bottom immersion heating and thermal insulation stove; it has interior clamping cylinder and external compression cylinder; dual-seal can be provided, and the liquid metal of avoiding insulation is arrived in protection tube by the crack of cone seal flange, prevents that the heater in protection tube from being burnt.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 2-Fig. 8, the bottom immersion heating and thermal insulation stove that the utility model embodiment provides comprises protection tube 108, interior clamping cylinder 102 and external compression cylinder 103, wherein, protection tube 108 is inserted into after through the protection tube breach on the furnace shell 101 of this bottom immersion heating and thermal insulation stove in the protection tube plug-in opening on the flue 107 of this bottom immersion heating and thermal insulation stove; The end of protection tube 108 is fixed with cone seal flange 106, and this cone seal flange 106 is positioned at above-mentioned protection tube plug-in opening; Interior clamping cylinder 102 is fixed on the furnace shell 101 of this bottom immersion heating and thermal insulation stove, and the end face of its one end is along circumferentially withstanding on the end face of protection tube 108; External compression cylinder 103 is enclosed within outside interior clamping cylinder 102, and is fixed on furnace shell 101; One end of above-mentioned external compression cylinder 103 is provided with the base plate 132 with open-work, and this base plate 132 is along circumferentially withstanding on the end face of cone seal flange 106.
Concrete, above-mentioned base plate 132 only withstands on the end face of cone seal flange 106, and it does not contact with flue 107, can make cone seal flange 106 hold out against in the protection tube plug-in opening of flue 107, makes cone seal flange 106 and flue 107 close contacts.
In the bottom immersion heating and thermal insulation stove that the utility model embodiment provides, be provided with external compression cylinder 103 and interior clamping cylinder 102, wherein, the base plate 132 of external compression cylinder 103 is along circumferentially withstanding on the end face of cone seal flange 106, can reduce the amount liquid metal oozing out in the crackle of cone seal flange 106, avoid liquid metal to ooze out in the crackle of cone seal flange 106 even completely; Simultaneously; the end face of interior clamping cylinder 102 is along circumferentially withstanding on the end of protection tube 108; reached the effect of the mouth of pipe of shutoff protection tube 108; the liquid metal that can avoid the crackle by cone seal flange 106 to ooze out flows in protection tube 108 after the gap by between cone seal flange 106 and base plate 132 enters external compression sleeve.
To sum up; in the bottom immersion heating and thermal insulation stove that the utility model embodiment provides; external compression cylinder 103 and interior clamping cylinder 102 have played dual-seal effect; can avoid liquid metal to be oozed out in rear arrival protection tube 108 by the crack of cone seal flange 106 completely, and then avoid the heater in protection tube 108 to be burnt by the liquid metal of high temperature.
In addition, in the bottom immersion heating and thermal insulation stove that the utility model embodiment provides, external compression cylinder 103 holds out against cone seal flange 106, can make cone seal flange 106 and flue 107 close contacts, and then reduce and avoid liquid metal to be oozed out by the gap between cone seal flange 106 and flue 107 even completely, prevent that above-mentioned liquid metal from entering (clamping cylinder 102 places in arriving) in external compression cylinder 103; Meanwhile, interior clamping cylinder 102 can avoid the above-mentioned liquid metal being oozed out by the gap of cone seal flange 106 and flue 107 to arrive in protection tube 108 behind the gap by between external compression cylinder 103 and cone seal flange 106.Therefore; in the bottom immersion heating and thermal insulation stove that the utility model embodiment provides; the dual sealing functions of interior clamping cylinder 102 and external compression cylinder 103 can also avoid liquid metal to be oozed out in rear arrival protection tube 108 by the gap between cone seal flange 106 and flue 107, has further improved the security of protection tube 108 internal heaters.
Concrete, the protection tube plug-in opening of above-mentioned flue 107 is the bellmouth coordinating with cone seal flange 106, and its area of section reduces in flue 107 gradually by flue 107 is outer.
Preferably, in the bottom immersion heating and thermal insulation stove that above-described embodiment provides, the dead in line of the axis of interior clamping cylinder 102 and protection tube 108.
Further, in the immersion heating and thermal insulation stove of above-mentioned bottom, in order to ensure the mouth of pipe of tight closure protection tube 108, it is identical that interior clamping cylinder 102 and external compression cylinder 103 are set to shape, and the shape and size of both cross sections are all identical.
Because protection tube 108 is high thermal conduc tivity ceramics protection tube; for fear of cause protection tube 108 damages because interior clamping cylinder 102 pressure are excessive; in the bottom immersion heating and thermal insulation stove that above-described embodiment provides, on interior clamping cylinder 102, near the end periphery of protection tube 108, be provided with the limiting section 122 of the through-hole position that can be stuck in base plate 132.Concrete, the structure of above-mentioned limiting section 122 can be set to a projection, a plurality of projection or circumferential convex edge etc., and the present embodiment does not limit the structure of limiting section 122.
Further; in the bottom immersion heating and thermal insulation stove that above-described embodiment provides; cone seal flange 106 is set with and is fixed on outside protection tube 108; both are coaxial; in order to facilitate the base plate 132 of external compression cylinder 103 to hold out against the end face of cone seal flange 106, above-mentioned external compression cylinder 103 is set to protection tube 108 coaxial.
In the immersion heating and thermal insulation stove of above-mentioned bottom, external compression cylinder 103 can be set to circular copper, square tube etc., the shape of the external clamping cylinder 103 of the present embodiment does not limit, but it is all identical with the shape and size of end face of being close to external compression cylinder 103 on cone seal flange 106 that its base plate 132 shapes are preferably set to, that is, after assembling, base plate 132 is fitted just completely with the end face of cone seal flange 106.
Concrete, in the bottom immersion heating and thermal insulation stove that above-described embodiment provides, external compression cylinder 103 is fixed with the first ring flange 131 away from the end of cone seal flange 106, and above-mentioned the first ring flange 131 is fixed on outside furnace shell 101 by fixture.Above-mentioned interior clamping cylinder 102 is fixed on furnace shell 101 by external compression cylinder 103, concrete, is fixed with the second ring flange 121, the second ring flanges 121 is fixed on the first ring flange 131 by fixture on interior clamping cylinder 102 away from the end of protection tube 108.
Preferably, in the bottom immersion heating and thermal insulation stove that above-described embodiment provides, the distance stretching in furnace shell 101 for the ease of adjusting external compression cylinder 103, to regulate its base plate 132 to hold out against the dynamics of cone seal flange 106, above-mentioned the first ring flange 131 is preferably set to be fixed on furnace shell 101 by bolt or double-screw bolt; Equally, for the ease of adjusting interior clamping cylinder 102, stretch into the distance in furnace shell 101, to adjust the dynamics that its base plate 132 holds out against cone seal flange 106, above-mentioned the second ring flange 121 is equally preferably set to be fixed on the first ring flange 131 by bolt or double-screw bolt.
In addition, above-mentioned the first ring flange 131 and the second ring flange 121 can be set to by the mode of welding, be fixed on respectively the end of external compression cylinder 103 and interior clamping cylinder 102, and also can be set to is integral type structure with external compression cylinder 103 and interior clamping cylinder 102 respectively.
In the bottom immersion heating and thermal insulation stove that above-described embodiment provides, its heat preservation sandwich layer is clipped between flue 107 and furnace shell 101, the protection tube indentation, there of doubling-up on furnace shell 101, and external compression cylinder 103 and interior clamping cylinder 102 are positioned at the cavity that heat preservation sandwich layer middle part surrounds.
Above-mentioned heat preservation sandwich layer is specially the hard calcium silicates flaggy 104 of high insulating effect, and this hard calcium silicates flaggy 104 is fixed on flue 107, and is provided with sealant 109 between this hard calcium silicates flaggy 104 and furnace shell 101.
Concrete, in the immersion heating and thermal insulation stove of above-mentioned bottom, hard calcium silicates flaggy 104 is closely fixed on flue 107.In the bottom immersion heating and thermal insulation stove that the present embodiment provides; hard calcium silicates flaggy 104 is closely connected with flue 107 on the one hand; on the other hand and between furnace shell 101, be provided with sealant 109; can obtain along the circumferential shutoff furnace shell 101 of protection tube breach and the effect in the gap between flue 107; can avoid the liquid metal of insulation after between the gap on flue 107 or crackle inflow furnace shell 101 and flue 107, by protection tube indentation, there, be revealed.
Concrete, in the immersion heating and thermal insulation stove of above-mentioned bottom, also comprising and embedding in flue 107, ground is also closely fixed on the hard calcium silicates sheet frame 105 on flue 107; Hard calcium silicates flaggy 104 is specifically fixed on hard calcium silicates sheet frame 105 by fixtures such as bolts, and both are adjacent to.Certainly, in order to ensure fastness, between above-mentioned hard calcium silicates flaggy 104 and hard calcium silicates sheet frame 105, also viscose glue can be set.
In addition, above-mentioned flue 107 is that mould material first passes through moulding by casting, then through oversintering, makes.Above-mentioned hard calcium silicates sheet frame 105 can be fixed in the groove of offering on flue 107 by fixture, corresponding, needs to arrange fluid sealant between the two to guarantee tight connection; Above-mentioned hard calcium silicates sheet frame 105 is preferably set to be cast for one with flue 107, during production, need in mould, to imbed in advance hard calcium silicates sheet frame 105, then make flue 107 moulding by casting, and then flue 107 is cast for one with hard calcium silicates sheet frame 105, finally make to be cast for flue 107 and hard calcium silicates sheet frame 105 sintering (sintering time can be set to 7 days, and the maximum temperature of sintering can be set to 800 ℃) of one.
Concrete, in the bottom immersion heating and thermal insulation stove that above-described embodiment provides, hard calcium silicates flaggy 104 can be set to comprise one deck hard calcium silicate board, also can be set to as required the hard calcium silicate board that comprises that multilayer is fixedly connected with, and the hard silicic acid cover plate of adjacent layer need be set to mutually be close to.
In the bottom immersion heating and thermal insulation stove that the present embodiment provides, heat-insulation layer is specifically set to the hard calcium silicates flaggy 104 of high insulating effect, can avoid amount of heat to be scattered and disappeared by the mouth of pipe of protection tube 108 around, improves heat insulation effect.
In this description, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a bottom immersion heating and thermal insulation stove, is characterized in that, comprising:
Be inserted into the protection tube on the flue of described bottom immersion heating and thermal insulation stove, be fixed with cone seal flange outside the end of described protection tube, described cone seal flange is positioned at the protection tube plug-in opening of described flue;
Be fixed on the interior clamping cylinder on the furnace shell of described bottom immersion heating and thermal insulation stove, the end face of described interior clamping cylinder is along circumferentially withstanding on the end face of described protection tube; With
Be fixed on described furnace shell, and be enclosed within the external compression cylinder outside described interior clamping cylinder, the end near described protection tube on described external compression cylinder is provided with the base plate with open-work, and described base plate is along circumferentially withstanding on the end face of described cone seal flange.
2. bottom according to claim 1 immersion heating and thermal insulation stove, is characterized in that the axis of described interior clamping cylinder and the dead in line of described protection tube.
3. bottom according to claim 2 immersion heating and thermal insulation stove, is characterized in that, the cross section of described interior clamping cylinder is all identical with shape, the size of the cross section of described protection tube.
4. bottom according to claim 3 immersion heating and thermal insulation stove, is characterized in that, is fixed with the limiting section that can be stuck in described through-hole position outside the end of described interior clamping cylinder.
5. according to the bottom immersion heating and thermal insulation stove described in claim 2-4 any one, it is characterized in that, described external compression cylinder is coaxial with described protection tube.
6. bottom according to claim 5 immersion heating and thermal insulation stove, is characterized in that, described external compression cylinder is fixed with the first ring flange away from the end of described protection tube, and described the first ring flange is fixed on outside described furnace shell by fixture.
7. bottom according to claim 6 immersion heating and thermal insulation stove, is characterized in that, the end away from described protection tube on described interior clamping cylinder is fixed with the second ring flange, and described the second ring flange is fixed on described the first ring flange by fixture.
8. bottom according to claim 1 immersion heating and thermal insulation stove, is characterized in that, the heat preservation sandwich layer of described bottom immersion heating and thermal insulation stove is hard calcium carbonate flaggy.
9. bottom according to claim 8 immersion heating and thermal insulation stove, is characterized in that, described hard calcium carbonate flaggy is fixed on described flue, and is provided with sealant between described hard calcium carbonate flaggy and described furnace shell.
10. bottom according to claim 9 immersion heating and thermal insulation stove, is characterized in that, also comprises the hard calcium silicates sheet frame being closely inlaid in described flue; Described hard calcium silicates flaggy is fixed on described hard calcium silicates sheet frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320554810.2U CN203489685U (en) | 2013-09-06 | 2013-09-06 | Lower-portion submerged heating and heat-preserving furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320554810.2U CN203489685U (en) | 2013-09-06 | 2013-09-06 | Lower-portion submerged heating and heat-preserving furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203489685U true CN203489685U (en) | 2014-03-19 |
Family
ID=50260510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320554810.2U Withdrawn - After Issue CN203489685U (en) | 2013-09-06 | 2013-09-06 | Lower-portion submerged heating and heat-preserving furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203489685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411434A (en) * | 2013-09-06 | 2013-11-27 | 重庆东热工业炉有限公司 | Lower immersed type heating holding furnace |
-
2013
- 2013-09-06 CN CN201320554810.2U patent/CN203489685U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411434A (en) * | 2013-09-06 | 2013-11-27 | 重庆东热工业炉有限公司 | Lower immersed type heating holding furnace |
| CN103411434B (en) * | 2013-09-06 | 2015-07-08 | 重庆东热工业炉有限公司 | Lower immersed type heating holding furnace |
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Granted publication date: 20140319 Effective date of abandoning: 20150708 |
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| AV01 | Patent right actively abandoned |
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| RGAV | Abandon patent right to avoid regrant |