CN203286894U - Preheating labyrinth heating furnace - Google Patents
Preheating labyrinth heating furnace Download PDFInfo
- Publication number
- CN203286894U CN203286894U CN2013201743676U CN201320174367U CN203286894U CN 203286894 U CN203286894 U CN 203286894U CN 2013201743676 U CN2013201743676 U CN 2013201743676U CN 201320174367 U CN201320174367 U CN 201320174367U CN 203286894 U CN203286894 U CN 203286894U
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- China
- Prior art keywords
- labyrinth
- heating furnace
- heat
- insulation layer
- refractory tube
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- Expired - Fee Related
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Abstract
The utility model provides a preheating labyrinth heating furnace which is mainly formed by sequentially installing a shell, a labyrinth heat preservation layer, a fireproof support, an electric furnace heating wire and a fireproof tube in a sleeved mode from outside to inside. The labyrinth heat preservation layer is provided with an air inlet and an air outlet. The fireproof tube is provided with a hot air inlet. One end of the fireproof tube is provided with an extraction opening, and the other end of the fireproof tube is provided with a plug. Waste heat of a furnace body is used for preheating air, the furnace body is cooled at the same time, and therefore the heat utilization efficiency is high. The three modes of heat radiation, heat conduction and air convection are used for heating samples, hot air has direct effect on the portion above the samples, turbulence is formed above the samples, and therefore the heat efficiency is high, combustion is full and the combustion efficiency is high.
Description
Technical field
The utility model belongs to testing equipment, relates in particular in a kind of sulphur meter and to be used for heating and the device of the sample that burns.
Background technology
Heating furnace in sulphur meter is an end air inlet at present, electric furnace heating wire heating refractory tube, and then heating tube, by heat radiation and heat conduction heating sample, is used for heating and the sample that burns.
The problem that existing heating furnace exists is as follows: the thermal efficiency is low, and cold air after an end enters, needs the temperature that heating just can reach to be needed; Shaft need to arrange the cooling device, and energy wastes; Airflow direction is parallel to sample, and the sample efficiency of combustion is low.
The utility model content
The utility model want the technical solution problem be make sample burning more abundant, improve efficiency of combustion, thereby a kind of pre-heated labyrinth heating furnace is provided.
In order to address the above problem by the following technical solutions: a kind of pre-heated labyrinth heating furnace mainly is set with and forms successively from outside to inside by shell, labyrinth type heat-insulation layer, fire-resistant support, electric furnace heating wire, refractory tube; The labyrinth type heat-insulation layer is provided with air inlet and gas outlet, and refractory tube is provided with hot-air inlets, and refractory tube one end is provided with bleeding point, the other end is provided with stopper.
Form interlayer between described labyrinth type heat-insulation layer and fire-resistant support, gas outlet and interlayer are communicated with; Hot-air inlets on refractory tube also is communicated with interlayer.
Described air inlet and gas outlet lay respectively at the two ends of labyrinth type heat-insulation layer.
Described hot-air inlets and gas outlet lay respectively at the two ends of interlayer.
Described shell, labyrinth type heat-insulation layer, fire-resistant support, electric furnace heating wire, refractory tube are circular tube shaped.
Sample container is placed in refractory tube and is positioned at the hot-air inlets below.
When the utility model utilizes the waste heat of body of heater to carry out preheating to air, cooling shaft, heat utilization efficiency is high.By heat radiation, heat conduction and three kinds of mode heating samples of cross-ventilation, the thermal current direct effect is to the sample top, and formation is turbulent above sample, and the thermal efficiency is high, sufficient combustion, and efficiency of combustion is high.
Description of drawings
Fig. 1 is assembly drawing of the present utility model.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the structural representation after the utility model removes shell.
Fig. 4 is the expanded view of the utility model labyrinth type heat-insulation layer.
The specific embodiment
As shown in Figure 1, 2, 3, a kind of pre-heated labyrinth heating furnace, mainly be set with and form successively from outside to inside by shell 1, labyrinth type heat-insulation layer 2, fire-resistant support 3, electric furnace heating wire 4, refractory tube 5; Shell, labyrinth type heat-insulation layer, fire-resistant support, electric furnace heating wire, refractory tube are circular tube shaped.
Labyrinth type heat-insulation layer 2 is provided with air inlet 2-1 and gas outlet 2-2, and refractory tube 5 is provided with hot-air inlets 5-3, and refractory tube one end is provided with bleeding point 5-1, the refractory tube other end is provided with stopper 5-2.Form interlayer between labyrinth type heat-insulation layer 2 and fire-resistant support 3, gas outlet 2-2 and interlayer are communicated with; Hot-air inlets 5-3 on refractory tube also is communicated with interlayer.Air inlet and gas outlet lay respectively at the two ends of labyrinth type heat-insulation layer, and hot-air inlets and gas outlet lay respectively at the two ends of interlayer.
As shown in Figure 4, labyrinth type heat-insulation layer 2 is for being provided with the heat-insulation layer of snakelike inlet channel 2-3.
Operation principle: after the electric furnace heating wire energising, start heating furnace body; After reaching uniform temperature, bleeding point starts to bleed, and forms negative pressure in heating furnace; Cold air enters through air inlet, by heat-insulation layer labyrinth type air flue, heats for the first time; Then, by gas outlet, enter interlayer, heat for the second time; Air after twice heating enters refractory tube through hot-air inlets; After heating furnace reaches preset temperature, pull out stopper, the sample container of putting sample well is put into refractory tube and shift the hot-air inlets below onto, then filled in stopper; Hot-air acts directly on the sample top, accelerates the burning of sample.
Claims (7)
1. a pre-heated labyrinth heating furnace, is characterized in that: mainly by shell, labyrinth type heat-insulation layer, fire-resistant support, electric furnace heating wire, refractory tube, be set with and form successively from outside to inside; The labyrinth type heat-insulation layer is provided with air inlet and gas outlet, and refractory tube is provided with hot-air inlets, and refractory tube one end is provided with bleeding point, the other end is provided with stopper.
2. pre-heated labyrinth according to claim 1 heating furnace, it is characterized in that: form interlayer between described labyrinth type heat-insulation layer and fire-resistant support, gas outlet and interlayer are communicated with; Hot-air inlets on refractory tube also is communicated with interlayer.
3. pre-heated labyrinth according to claim 1 and 2 heating furnace, it is characterized in that: described air inlet and gas outlet lay respectively at the two ends of labyrinth type heat-insulation layer.
4. pre-heated labyrinth according to claim 2 heating furnace, it is characterized in that: described hot-air inlets and gas outlet lay respectively at the two ends of interlayer.
5. pre-heated labyrinth according to claim 1 heating furnace, it is characterized in that: described shell, labyrinth type heat-insulation layer, fire-resistant support, electric furnace heating wire, refractory tube are circular tube shaped.
6. pre-heated labyrinth according to claim 3 heating furnace, it is characterized in that: sample container is placed in refractory tube and is positioned at the hot-air inlets below.
7. pre-heated labyrinth according to claim 2 heating furnace, it is characterized in that: sample container is placed in refractory tube and is positioned at the hot-air inlets below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201743676U CN203286894U (en) | 2013-04-09 | 2013-04-09 | Preheating labyrinth heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201743676U CN203286894U (en) | 2013-04-09 | 2013-04-09 | Preheating labyrinth heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203286894U true CN203286894U (en) | 2013-11-13 |
Family
ID=49543252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201743676U Expired - Fee Related CN203286894U (en) | 2013-04-09 | 2013-04-09 | Preheating labyrinth heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203286894U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206858A (en) * | 2013-04-09 | 2013-07-17 | 河南工程学院 | Preheated-type labyrinth heating furnace |
-
2013
- 2013-04-09 CN CN2013201743676U patent/CN203286894U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206858A (en) * | 2013-04-09 | 2013-07-17 | 河南工程学院 | Preheated-type labyrinth heating furnace |
| CN103206858B (en) * | 2013-04-09 | 2014-12-10 | 河南工程学院 | Preheated-type labyrinth heating furnace |
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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 |
Granted publication date: 20131113 Termination date: 20150409 |
|
| EXPY | Termination of patent right or utility model |