CN209801947U - Direct combustion type wood drying kiln - Google Patents
Direct combustion type wood drying kiln Download PDFInfo
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- CN209801947U CN209801947U CN201920121455.7U CN201920121455U CN209801947U CN 209801947 U CN209801947 U CN 209801947U CN 201920121455 U CN201920121455 U CN 201920121455U CN 209801947 U CN209801947 U CN 209801947U
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Abstract
The utility model belongs to the technical field of firing equipment, a direct combustion formula wood drying kiln is related to, include the kiln body that is separated into heating area and drying area by the baffle, the ventilation of baffle both sides, the heating area is including direct combustion formula combustor and heated air circulation fan, heated air circulation fan is just right direct combustion formula combustor, direct combustion formula combustor towards one side of heated air circulation fan is equipped with the wind cap. The equipment is energy-saving and environment-friendly, and heat supply is stable.
Description
Technical Field
The utility model relates to a firing equipment technical field, in particular to direct combustion formula wood drying kiln.
Background
Wood drying generally refers to a process by which moisture in the wood is allowed to escape from the tree in a vaporized or evaporated manner. Wood drying methods are numerous and generally fall into two broad categories, natural drying and artificial drying. Wood kilns are the most commonly used manual drying method. The kiln drying is that the wood is put in a drying kiln with a special building structure or a metal structure, the temperature, the relative humidity and the airflow circulation speed of a drying medium are artificially controlled, and the wood is dried by mainly utilizing the convection heat transfer of the gas medium. Because the drying kiln is also called a drying chamber or a drying furnace, the kiln is also called a chamber dry or a furnace dry, the heating mode of the middle hot air link is that steam generated by a coal-fired boiler is used, and then a steam heat exchanger is used for heat exchange to heat a product in a hot air circulation drying oven, in recent years, coal burning is not allowed due to environmental protection requirements, and a plurality of manufacturers do not have better heating schemes, so that the coal-fired boiler is not changed into a gas-fired boiler to generate steam for heating.
the energy consumption of the coal is relatively low, but the energy consumption cannot meet the requirement of environmental protection, the use cost of the fuel gas is 2-3 times of the original coal cost after the fuel gas is changed into a gas boiler, the boiler heating steam is heated by a heat exchanger, and the energy loss caused by energy conversion is large. Fuel usage costs increase many times.
The direct heating by the gas burner is partially changed to the direct heating by the conventional gun type burner in the market, the conventional gun type burner is not suitable for the conventional temperature requirement, the wood drying is a long process which generally needs 20-30 hours of slow drying and even longer time, and a burner which has low energy consumption, does not need too high temperature and can uniformly distribute the temperature is needed for heating at the moment, and the lower energy consumption is needed to be controlled.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide a direct combustion formula timber drying kiln can the environmental protection and carry out timber stoving steadily.
The utility model discloses a following technical scheme realizes above-mentioned purpose: the utility model provides a direct combustion formula wood drying kiln, includes the kiln body that is separated into heating area and drying area by the baffle, the baffle both sides are ventilated, heating area includes direct combustion formula combustor and heated air circulation fan, heated air circulation fan is just right direct combustion formula combustor, direct combustion formula combustor towards one side of heated air circulation fan is equipped with the windshield.
Specifically, the direct-fired burner is a metal fiber burner.
Specifically, the heated air circulation fan has a forward and reverse rotation function and is reversed once every 10 minutes.
specifically, the direct combustion formula combustor still is supporting with air feed mechanism and ignition mechanism, air feed mechanism includes air line, gas line and joins the venturi mixer of air line and gas line, ignition mechanism is including being close to the ignition rod that the direct combustion formula combustor set up.
Further, the ignition mechanism further comprises an ignition inductor arranged on one side of the ignition rod.
Further, the gas line even in the branch pipe mouth of venturi blender, be equipped with air-fuel proportional valve on the gas line, be equipped with fan and air proportional valve on the air line, the air line is connected at venturi blender's upstream node the guide's mouth of air-fuel proportional valve, the gas line is equipped with manual minitrim valve between air-fuel proportional valve and venturi blender.
Further, an air pressure switch is arranged on the air line at the downstream of the fan.
Furthermore, an air manual valve is further arranged on the air line.
Furthermore, a pressure reducing valve and an electromagnetic valve are further arranged on the fuel gas line.
Adopt above-mentioned technical scheme, the utility model discloses technical scheme's beneficial effect is:
The equipment is energy-saving and environment-friendly, and heat supply is stable.
Drawings
FIG. 1 is a simplified diagram of an embodiment of a direct-fired wood-drying kiln;
FIG. 2 is an enlarged view of a portion of the portion A of FIG. 1;
Fig. 3 is a partially enlarged view of a portion B in fig. 1.
The figures in the drawings represent:
1-a kiln body, 11-a partition board, 12-a heating area and 13-a drying area;
2-a hot air circulating fan;
3-direct-fired burner, 31-windshield;
4-air supply mechanism, 41-air line, 411-fan, 412-air pressure switch, 413-air proportional valve, 414-air manual valve, 42-gas line, 421-pressure reducing valve, 422-air-fuel proportional valve, 423-manual fine adjustment valve, 424-electromagnetic valve, 43-venturi mixer;
5-ignition mechanism, 51-ignition rod, 52-ignition inductor;
6-wood.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example (b):
As shown in fig. 1, the utility model discloses a direct combustion formula wood drying kiln, including being separated into the kiln body 1 of district 12 and drying zone 13 that generates heat by baffle 11, 11 both sides of baffle ventilate, and district 12 that generates heat includes direct combustion formula combustor 3 and heated air circulation fan 2, and heated air circulation fan 2 is just to direct combustion formula combustor 3, and one side that direct combustion formula combustor 3 faces heated air circulation fan 2 is equipped with windshield 31. When the wood 6 is baked, the wood 6 is placed in the drying area 13 of the kiln body 1, the direct-fired burner 3 burns to emit heat, so that the temperature of the surrounding air rises, the hot air circulating fan 2 blows air towards the direct-fired burner 3, so that hot air passes through the gap on one side of the partition plate 11 to be supplied to the heating area 12 for heating, and cold air enters the heating area 12 from the gap on the other side of the partition plate 11 and is heated by the direct-fired burner 3. The windshield 31 can prevent the heated air circulation fan 2 from directly blowing out the flame by the direct-fired burner 3, protect the stability of the flame, and enable the heated air circulation fan 2 to only play a role in air circulation. The coal burning device has the advantages that harmful gas and particles generated by coal burning are avoided during operation, the energy efficiency is high, the energy is saved, the environment is protected, and the heat supply is stable.
The direct-fired burner 3 is a metal fiber burner. The metal fiber burner has the advantages of low combustion speed, mild released heat and no need of violent combustion, so that the heat supply is stable, the gas consumption is reduced by 20-30% compared with a gas boiler, and the energy consumption is reduced by 50% compared with an electrically heated drying kiln.
The heated air circulation fan 2 has a forward and reverse rotation function and is reversed every 10 minutes. Thus, the hot air circulating fan 2 can not only blow heat into the drying area 13, but also suck the heat into the drying area 13, and can promote the sufficient mixing of air in the kiln body 1 once the heat is reversed, so that two sides of the drying area 13 are heated more uniformly.
as shown in fig. 1 to 3, the direct-fired burner 3 is further provided with a gas supply mechanism 4 and an ignition mechanism 5, the gas supply mechanism 4 includes an air line 41, a gas line 42, and a venturi mixer 43 merging the air line 41 and the gas line 42, and the ignition mechanism 5 includes an ignition rod 31 disposed adjacent to the direct-fired burner 3. The venturi mixer 43 is used to mix the fuel gas and the air for combustion, and supply the mixture to the direct-fired burner 3, and then ignite and burn the mixture with the ignition rod 31.
As shown in fig. 3, the ignition mechanism 5 further includes an ignition sensor 32 provided on one side of the ignition bar 31. The ignition inductor 32 can detect whether the direct-fired burner 3 is ignited or blown out, ensuring the normal progress of combustion.
As shown in FIG. 2, gas line 42 is connected to a branch port of venturi mixer 43, gas line 42 is provided with air-fuel proportional valve 422, air line 41 is provided with fan 411 and air proportional valve 413, air line 41 is connected to a pilot port of air-fuel proportional valve 413 at a node upstream of venturi mixer 43, and gas line 42 is provided with manual trim valve 423 between air-fuel proportional valve 413 and venturi mixer 43. When the air is sprayed out from the venturi mixer 43, negative pressure is generated in the branch, so that the fuel gas can be sucked into the venturi mixer 43 to play a mixing role, and the power of the whole device is provided by only one fan 411, so that the equipment cost is low. Manual trim valve 423 enables more precise adjustment of the air/fuel ratio.
as shown in fig. 2, the air line 41 is provided with an air pressure switch 412 downstream of the blower 411. The air pressure switch 412 can be used to monitor the actual pressure in the air line 41 to avoid dangers associated with too high an air pressure.
As shown in fig. 2, an air manual valve 414 is further provided on the air line 41. The manual air valve 414 can control the maximum pressure in the air line 41 to avoid dangerously high air pressures.
as shown in fig. 2, the gas line 42 is further provided with a pressure reducing valve 421 and an electromagnetic valve 424. The pressure reducing valve 421 is used to reduce the pressure of the fuel gas, so as to avoid the impact of the gas pressure on the line valve. The solenoid valve 424 is used to shut down the gas in an emergency to avoid extended hazards in the event of an accident.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (9)
1. a direct-fired wood drying kiln is characterized in that: the kiln comprises a kiln body which is separated into a heating area and a drying area by a partition plate, wherein the two sides of the partition plate are ventilated, the heating area comprises a direct-fired burner and a hot air circulating fan, the hot air circulating fan is right opposite to the direct-fired burner, and one side of the direct-fired burner, which faces the hot air circulating fan, is provided with a windshield.
2. the direct combustion wood-drying kiln of claim 1, wherein: the direct-fired burner is a metal fiber burner.
3. The direct combustion wood-drying kiln of claim 1, wherein: the hot air circulating fan has a positive and negative rotation function and rotates reversely once every 10 minutes.
4. The direct combustion wood-drying kiln of claim 3, wherein: the direct combustion formula combustor still is supporting with air feed mechanism and ignition mechanism, air feed mechanism includes air line, gas line and joins the venturi blender of air line and gas line, ignition mechanism is including being close to the ignition rod that the direct combustion formula combustor set up.
5. The direct combustion wood-drying kiln of claim 4, wherein: the ignition mechanism further comprises an ignition inductor arranged on one side of the ignition rod.
6. The direct combustion wood-drying kiln of claim 4, wherein: the gas line even in venturi mixer's branch pipe mouth, be equipped with air-fuel proportional valve on the gas line, be equipped with fan and air proportional valve on the air line, the air line is connected at venturi mixer's upper reaches node the guide mouth of air-fuel proportional valve, the gas line is equipped with manual fine setting valve between air-fuel proportional valve and venturi mixer.
7. The direct combustion wood-drying kiln of claim 6, wherein: and an air pressure switch is arranged on the air line at the downstream of the fan.
8. The direct combustion wood-drying kiln of claim 6, wherein: and an air manual valve is also arranged on the air line.
9. the direct combustion wood-drying kiln of claim 6, wherein: and the gas line is also provided with a pressure reducing valve and an electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920121455.7U CN209801947U (en) | 2019-01-24 | 2019-01-24 | Direct combustion type wood drying kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920121455.7U CN209801947U (en) | 2019-01-24 | 2019-01-24 | Direct combustion type wood drying kiln |
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| Publication Number | Publication Date |
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| CN209801947U true CN209801947U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920121455.7U Active CN209801947U (en) | 2019-01-24 | 2019-01-24 | Direct combustion type wood drying kiln |
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| CN (1) | CN209801947U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294911A (en) * | 2021-12-31 | 2022-04-08 | 中科卓异环境科技(东莞)有限公司 | Full-automatic drying equipment for porous medium combustion of agricultural products |
-
2019
- 2019-01-24 CN CN201920121455.7U patent/CN209801947U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294911A (en) * | 2021-12-31 | 2022-04-08 | 中科卓异环境科技(东莞)有限公司 | Full-automatic drying equipment for porous medium combustion of agricultural products |
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