CN217154552U - Energy-saving environment-friendly direct-fired hot blast stove - Google Patents
Energy-saving environment-friendly direct-fired hot blast stove Download PDFInfo
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- CN217154552U CN217154552U CN202221016260.4U CN202221016260U CN217154552U CN 217154552 U CN217154552 U CN 217154552U CN 202221016260 U CN202221016260 U CN 202221016260U CN 217154552 U CN217154552 U CN 217154552U
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Abstract
The utility model relates to a hot blast stove technology, which is used for solving the problems of low gas efficiency and excessive tail gas emission caused by heat accumulation and heat dissipation of the outer wall of the stove body of the existing hot blast stove, in particular to an energy-saving and environment-friendly direct-fired hot blast stove, which comprises an inner air duct, an outer air duct, a primary turbulence mechanism, a secondary turbulence mechanism and an air outlet; the utility model discloses well fresh air is in the outer wind channel of trompil regional entering around furnace body shell lower part, give furnace body shell and interior wind channel outer wall cooling in outer wind channel, and rise by peripheral outer wind channel and converge to interior wind channel top, turn back at interior wind channel top and enter into interior wind channel, the combustor inhales combustion-supporting wind and gas combustion production flame and high temperature tail gas, descending fresh air wraps up the flame that combustor and combustor produced all around, and premix with high temperature tail gas, after further mix through vortex mechanism, the interior wind channel bottom cavity of going into down, and turn the entering air outlet bottom the interior wind channel, further mix through vortex mechanism in air outlet department, by draught fan discharge system.
Description
Technical Field
The utility model relates to a hot-blast furnace technique specifically is an energy-concerving and environment-protective direct combustion hot-blast furnace.
Background
In the hot air drying industry, the hot blast stove is one of main heat sources of a drying device, and has become an upgrading product of an electric heat source and a traditional steam power heat source in many industries, the hot blast stove has multiple varieties and complete series, and is divided into two types of manual combustion and mechanical combustion in a coal adding mode, and is divided into a coal furnace, an oil furnace, a gas furnace and the like in fuel types;
at present, hot blast stoves on the market are not reasonable enough in design, and the furnace body heat accumulation and the furnace body outer wall generate heat seriously, so that a large amount of heat energy is dissipated through the furnace body outer wall, and potential safety hazards exist, so that the gas energy efficiency is low, the combustion structure is unreasonable, and CO and NO in tail gas emission X And the harmful substances such as aldehydes and the like exceed the standard;
in view of the above technical problem, the present application proposes a solution.
SUMMERY OF THE UTILITY MODEL
The utility model discloses well fresh air gets into outer wind channel through trompil region around furnace body shell lower part, fresh air is for furnace body shell and interior wind channel outer wall cooling in outer wind channel, and rise by peripheral outer wind channel and converge to interior wind channel top, fresh air turns back at interior wind channel top and enters interior wind channel afterwards, the combustor inhales combustion-supporting wind and gas combustion formation high temperature tail gas, the fresh air that turns back by interior wind channel top and enters interior wind channel mixes in advance with the high temperature tail gas that the combustor burning produced in the combustion chamber, further mix via the vortex mechanism again, the high temperature hot-blast of formation gets into interior wind channel bottom cavity, high temperature hot-blast further mixes through the vortex mechanism at furnace body air outlet, high temperature hot-blast is finally discharged the system by the draught fan; the energy-saving and environment-friendly direct-fired hot blast stove is provided to solve the problems of low gas efficiency and over-standard tail gas emission caused by heat accumulation of the stove body and heat dissipation of the outer wall of the stove body of the existing hot blast stove.
The purpose of the utility model can be realized by the following technical scheme:
an energy-saving environment-friendly direct-fired hot blast stove comprises a combustion system, wherein the combustion system is arranged at the top end of an outer air duct mechanism, the combustion system comprises a burner, a combustion fan, a fan air adjusting door and filtering device, a fuel gas inlet control mechanism and a combustion port, the combustion fan is a volute fan, the output end of the combustion fan is communicated to the inside of a combustion chamber of an inner air duct, and the fan air adjusting door and the filtering device are positioned at the inlet end of the combustion fan;
the combustor is positioned in the outer air duct mechanism, the combustion port is positioned at the bottom of the combustor, the bottom of the outer air duct mechanism is provided with an air outlet, the lower part of the outer air duct mechanism is provided with an outer air duct opening area, the outer air duct opening area is provided with a plurality of groups of air inlet holes, the inner part of the outer air duct mechanism is fixedly connected with a positioning block, the other end of the positioning block is fixedly connected with the outer wall of the inner air duct combustion chamber, the outer wall of the inner air duct combustion chamber and the inner wall of the outer air duct enclose a hollow pipeline through which fresh air flows, the inner wall of the outer air duct is internally provided with the inner air duct combustion chamber, the inner air duct combustion chamber comprises an upper inner air duct, an inner air duct framework, a combustion cavity and a cavity at the bottom of the inner air duct, the inner air duct frameworks are fixed on the inner wall of the inner air duct combustion chamber, the top of the inner air duct combustion chamber is opened, one group of the inner air duct framework is positioned at the top of the upper air duct, the other group of inner air duct frameworks are positioned in the middle of the combustion chamber, a first-stage turbulence mechanism is fixedly installed at the bottom of the combustion chamber, and the air outlet is communicated with the cavity at the bottom of the inner air duct.
As a preferred embodiment of the utility model, the inside rotation of fresh air inlet of outer wind channel trompil district department is connected with the pivot, pivot other end fixedly connected with closing plate, closing plate outer wall fixedly connected with air filter screen, the closing plate top is connected with the reduction torsion spring, reduction torsion spring top fixed connection is at outer wind channel trompil district inner wall.
As a preferred embodiment of the present invention, a second-stage turbulence mechanism is fixedly installed at the outlet of the air outlet, and the outside of the air outlet is surrounded by the outer air duct perforated area.
As a preferred embodiment of the utility model, combustion fan produces suction, and during the outside air got into combustion fan through fan air register and filter equipment, combustion fan discharged fresh air in to the combustor, exported the gas among the gas admission control mechanism, gas and fresh air co-combustion in the combustor, spout through the burner port.
As an optimal implementation mode, fresh air is inhaled to the fresh air inlet on the outer wind channel trompil region, fresh air rises along outer wind channel mechanism inner wall and gathers together to interior wind channel combustion chamber top and including wind channel combustion chamber top turn back get into interior wind channel down, this fresh air is the cooling of the combustor that inserts interior wind channel in interior wind channel, get into the burning chamber afterwards, parcel burner port and burner port spun flame, this flame forms mixed hot-blast with the fresh air mixture formation that gets into interior wind channel most high temperature tail gas, this mixed hot-blast enters into interior wind channel bottom cavity through one-level vortex mechanism and turns and gets into the air outlet, mixed hot-blast striking is located the intraoral second grade vortex mechanism of air outlet and spouts along the air outlet.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in, the inside and outside wind channel of direct-fired hot-blast furnace adopts the design of air-cooled wall all around, and the furnace body does not store heat, and heat maximize output for the fresh air who enters into interior wind channel gets into via outer wind channel, and outer wind channel covers the outer wall with interior wind channel, thereby makes cold wind realize the heat dissipation to furnace body and oven, has avoided the high temperature of furnace body oven, has both avoided the furnace body oven to dispel the heat and the calorific loss that leads to outward, has avoided the potential safety hazard that high temperature furnace body oven brought again.
2. The utility model discloses in, fresh air is distributed and is burnt around the entry that wind channel adopted in the outer wind channel entering for the spun high temperature tail flame of burner port and high temperature tail gas are wrapped up by cold wind, through the burning of cold wind parcel formula, have reduced flame temperature effectively, realize CO, NO X And the ultra-low emission of harmful substances meets the requirement of environmental protection, and sufficient air can release combustion chemical energy to the maximum extent, thereby being beneficial to energy conservation and environmental protection.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic front view of the structure of the present invention;
fig. 2 is a schematic view of the air outlet structure of the present invention;
FIG. 3 is a schematic sectional view of the present invention;
fig. 4 is a schematic top view of the present invention;
FIG. 5 is an enlarged schematic view of the structure at A in FIG. 3 according to the present invention;
figure 6 is the utility model discloses an air screen structural schematic diagram.
In the figure: 1. a combustion system; 101. a combustion engine; 102. a combustion fan; 103. a fan air adjusting door and a filtering device; 104. a gas inlet control mechanism; 105. a burner port; 2. an outer air duct mechanism; 201. the outer air duct is provided with a hole area; 202. the inner wall of the outer air duct; 203. positioning a block; 3. an inner air duct combustion chamber; 301. an upper inner air duct; 302. an inner air duct framework; 303. a combustion chamber; 304. a bottom chamber of the inner air duct; 4. a first-stage turbulence mechanism; 5. a secondary flow disturbing mechanism; 6. an air outlet; 7. a closing plate; 8. an air screen; 9. a return torsion spring; 10. a rotating shaft.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The first embodiment is as follows:
at present, hot-blast furnace design is reasonable inadequately on the market, and furnace body heat accumulation and furnace body outer wall generate heat seriously, can make the oven heat surrounding air when the oven generates heat to make a large amount of heats be used for heating the environment, cause the heating efficiency step-down of hot-blast furnace, and there is the potential safety hazard, lead to the gas efficiency low.
Referring to fig. 1-4, an energy-saving and environment-friendly direct-fired hot air furnace includes a combustion system 1, the combustion system 1 is disposed at the top end of an outer air duct mechanism 2 and inserted into an inner air duct combustion chamber 3, the combustion system 1 includes a burner 101, a combustion fan 102, a fan damper and filter device 103, a gas inlet control mechanism 104 and a burner port 105, the combustion fan 102 is a volute fan, the output end of the combustion fan 102 is connected to the inside of the inner air duct combustion chamber 3, the combustion fan 102 generates a suction force, external air enters the combustion fan 102 through the fan damper and filter device 103, and mixes and burns the external air with gas introduced by the gas inlet control mechanism 104 in the burner 101, flame is ejected through the burner port 105 to form high-temperature tail gas, the burner 101 is of a positive-english line type, the fan damper and filter device 103 are located at the inlet end of the combustion fan 102, and the air inlet amount of the combustion air can be adjusted through the fan damper and filter device 103, optimizing the air-fuel ratio;
the burner 101 is positioned inside the outer air duct mechanism 2 and inserted into the inner air duct combustion chamber 3, the burner port 105 is positioned at the bottom of the burner 101, the bottom of the outer air duct mechanism 2 is provided with an air outlet 6, the lower part of the outer air duct mechanism 2 is provided with an outer air duct perforated area 201, the outer air duct perforated area 201 is provided with a plurality of groups of air inlet holes, the inner part of the outer air duct mechanism 2 is fixedly connected with a positioning block 203, the other end of the positioning block 203 is fixedly connected with the outer wall of the inner air duct combustion chamber 3, the outer wall of the inner air duct combustion chamber 3 and the inner wall 202 of the outer air duct enclose a hollow pipeline, the air inlet holes on the outer air duct perforated area 201 suck fresh air, the fresh air flows in through the hollow pipeline, the fresh air rises to the top end of the inner air duct combustion chamber 3 along the inner wall of the outer air duct mechanism 2 and turns back to the top end of the inner air duct combustion chamber 3 to enter the inner air duct combustion chamber 3, and the furnace body framework, the shell and the inner air duct are cooled by the process, the over-high temperature of the furnace body, the shell and the inner air duct is avoided, the inner air duct combustion chamber 3 is arranged in the inner wall 202 of the outer air duct, the inner air duct combustion chamber 3 comprises an upper inner air duct 301, an inner air duct framework 302, a combustion cavity 303 and an inner air duct bottom cavity 304, two groups of inner air duct frameworks 302 are fixed on the inner wall of the inner air duct combustion chamber 3, the top end of the inner air duct combustion chamber 3 is open, one group of inner air duct frameworks 302 are positioned at the top of the upper inner air duct 301, the other group of inner air duct frameworks 302 are positioned in the middle of the combustion cavity 303, a primary turbulence mechanism 4 is fixedly arranged at the bottom of the combustion cavity 303, the air outlet 6 is communicated with the inner air duct bottom cavity 304, fresh air and high-temperature tail gas are collided and premixed by the primary turbulence mechanism 4 and enter the inner air duct bottom cavity 304 to be converged to form mixed hot air and then turn into the air outlet 6, the air outlet 6 is communicated with the inner air duct bottom cavity 304, a secondary turbulence mechanism 5 is fixedly arranged at the outlet of the air outlet 6, the mixed hot air is further uniformly mixed when passing through the secondary turbulence mechanism 5, the uniformly mixed hot air is finally gathered by the air outlet 6, then the mixed hot air is led out of the direct-fired hot air furnace through the induced draft fan, and the outer side of the air outlet 6 is surrounded by the outer air duct opening area 201.
Example two:
when the combustion structure of the hot blast stove is not designed reasonably, CO and NO in tail gas emission can be caused X And the aldehyde harmful substances exceed the standard, and meanwhile, if the air entering the air inlet hole contains more impurities, the combustion of the impurities can also generate a plurality of harmful substances to be discharged, so that the environment is not favorable.
Referring to fig. 5-6, fresh air enters the upper inner air duct 301 from the opening at the top end of the inner wall 202 of the outer air duct, because the burner 101 and the burner port 105 are located at the center of the inner wall 202 of the outer air duct, and the burner port 105 is inserted into the combustion chamber 3 of the inner air duct, the fresh air returning from the top end of the combustion chamber 3 of the inner air duct into the combustion chamber 3 of the inner air duct will be wrapped around the tail flame sprayed from the burner port 105 to form cold air wrapped combustion, thereby effectively reducing the flame temperature and carrying out CO and NO combustion X The substances are reduced in emission and meet the requirement of environmental protection;
the inside rotation of fresh air inlet of outer wind channel trompil district 201 department is connected with pivot 10, pivot 10 other end fixedly connected with closing plate 7, closing plate 7 outer wall fixedly connected with air screen 8, closing plate 7 top is connected with reset torsion spring 9, reset torsion spring 9 top fixed connection is at outer wind channel trompil district 201 inner wall, when the fresh air inlet does not admit air, seal the hot-blast furnace through closing plate 7, prevent that more dust impurity is reserved to the inside of hot-blast furnace, when the hot-blast furnace begins to work, closing plate 7 is opened because inside and outside pressure difference, make the fresh air inlet can get into the air, air screen 8 on the closing plate 7 lateral wall can further filter the air that gets into simultaneously, reduce the impurity in the air, prevent that the burning of impurity from producing harmful substance.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. An energy-saving environment-friendly direct-fired hot blast stove comprises a combustion system (1), wherein the combustion system (1) is arranged at the top end of an outer air channel mechanism (2), and is characterized in that the combustion system (1) comprises a burner (101), a combustion fan (102), a fan air adjusting door and filtering device (103), a fuel gas inlet control mechanism (104) and a burner port (105), wherein the combustion fan (102) is a volute fan, the output end of the combustion fan (102) is communicated to the inside of an inner air channel combustion chamber (3), and the fan air adjusting door and the filtering device (103) are positioned at the inlet end of the combustion fan (102);
combustor (101) are located inside outer wind channel mechanism (2), burner port (105) are located combustor (101) bottom, air outlet (6) have been seted up to outer wind channel mechanism (2) bottom, outer wind channel mechanism (2) lower part has been seted up outer wind channel trompil region (201), multiunit fresh air inlet has been seted up in outer wind channel trompil region (201), outer wind channel mechanism (2) inside fixedly connected with locating piece (203), wind channel combustion chamber (3) outer wall including locating piece (203) other end fixed connection, interior wind channel combustion chamber (3) outer wall closes with outer wind channel inner wall (202) and encloses hollow pipeline, and fresh air flows in through this hollow pipeline, outer wind channel inner wall (202) internally mounted has interior wind channel combustion chamber (3), interior wind channel combustion chamber (3) are including last interior wind channel (301), interior wind channel skeleton (302), Combustion chamber (303) and interior wind channel bottom cavity (304), two sets of wind channel skeleton (302) are fixed including wind channel combustion chamber (3) inner wall, interior wind channel combustion chamber (3) top end opening, wherein a set of interior wind channel skeleton (302) are located interior wind channel (301) top, and another wind channel skeleton (302) of organizing are located combustion chamber (303) middle part, and combustion chamber (303) bottom fixed mounting has one-level vortex mechanism (4), air outlet (6) are linked together with interior wind channel bottom cavity (304).
2. The energy-saving environment-friendly direct-fired hot blast stove according to claim 1, characterized in that a rotating shaft (10) is rotatably connected to the inside of an air inlet at the outer air duct perforated area (201), the other end of the rotating shaft (10) is fixedly connected with a closing plate (7), an air filter screen (8) is fixedly connected to the outer wall of the closing plate (7), the top end of the closing plate (7) is connected with a reset torsion spring (9), and the top end of the reset torsion spring (9) is fixedly connected to the inner wall of the outer air duct perforated area (201).
3. The energy-saving environment-friendly direct-fired hot blast stove according to claim 1, wherein a secondary turbulence mechanism (5) is fixedly installed at an outlet of the air outlet (6), and the outer side of the air outlet (6) is surrounded by the outer air duct opening area (201).
4. The energy-saving environment-friendly direct-fired hot blast stove according to claim 1, wherein the combustion fan (102) generates suction, external air enters the combustion fan (102) through the fan damper and the filter device (103), the combustion fan (102) discharges fresh air into the burner (101), gas is output from the gas inlet control mechanism (104), and the gas and the fresh air are mixed and combusted in the burner (101) and are ejected through the burner port (105).
5. The energy-saving environment-friendly direct-fired hot blast stove according to claim 3, characterized in that fresh air is sucked into the air inlet holes on the outer air duct opening area (201), rises along the inner wall of the outer air duct mechanism (2), gathers at the top end of the inner air duct combustion chamber (3), turns back at the top of the inner air duct combustion chamber (3), enters the inner air duct and descends, the fresh air cools the combustor (101) inserted into the inner air channel in the inner air channel, then enters the combustion cavity (303) to wrap the flame sprayed from the combustion port and the combustion port, the flame finally forms high-temperature tail gas which is mixed with fresh air entering the inner air duct to form mixed hot air, the mixed hot air enters the inner air duct bottom cavity (304) through the primary turbulence mechanism (4) and turns to enter the air outlet (6), and the mixed hot air collides with the secondary turbulence mechanism (5) positioned in the air outlet (6) and is sprayed out along the air outlet (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221016260.4U CN217154552U (en) | 2022-04-28 | 2022-04-28 | Energy-saving environment-friendly direct-fired hot blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221016260.4U CN217154552U (en) | 2022-04-28 | 2022-04-28 | Energy-saving environment-friendly direct-fired hot blast stove |
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| Publication Number | Publication Date |
|---|---|
| CN217154552U true CN217154552U (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221016260.4U Active CN217154552U (en) | 2022-04-28 | 2022-04-28 | Energy-saving environment-friendly direct-fired hot blast stove |
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| Country | Link |
|---|---|
| CN (1) | CN217154552U (en) |
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- 2022-04-28 CN CN202221016260.4U patent/CN217154552U/en active Active
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