CN2158060Y - Coal-fired efficiency indirect heating hot-air furnace - Google Patents
Coal-fired efficiency indirect heating hot-air furnace Download PDFInfo
- Publication number
- CN2158060Y CN2158060Y CN 93218311 CN93218311U CN2158060Y CN 2158060 Y CN2158060 Y CN 2158060Y CN 93218311 CN93218311 CN 93218311 CN 93218311 U CN93218311 U CN 93218311U CN 2158060 Y CN2158060 Y CN 2158060Y
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- coal
- overcoat
- stove
- hot
- blast
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Abstract
The utility model discloses a coal-fired efficiency indirect heating hot-air furnace which is characterized in that a hearth inner sleeve (11) is sheathed with a hot-air distance sleeve (10), the upper end is a free end, the upper end of the inner sleeve (11) is provided with a taper sleeve (15), the upper end of the taper sleeve is connected with the upper end of a fume return inner sleeve (9) which is sheathed outside the hot-air distance sleeve (10), a fume return outer sleeve (8) is sheathed between the fume return inner sleeve (9) and a furnace outer sleeve (7), the bottom ends of the fume return inner and outer sleeves are connected, and the upper end of the outer sleeve (8) is connected with an air connecting pipe (12). The upper part of each sleeve has no transverse rigidity connection and can freely stretch following the heat expansion and cold contraction. The utility model overcomes the weld tearing phenomenon of the furnace construction caused by unevenness heat expansion and cold contraction existing in the prior art, prolongs the service life of the furnace and improves the thermal efficiency.
Description
The utility model relates to a kind of coal-firing efficient indirect hot-blast stove of drying wet stock with coal-fired generation hot blast.
The equipment that is used at present dry materials both at home and abroad mostly is hot air heating apparatus, and the coal-fired indirect hot-blast stove of vertical barrel is a kind of China's national situation of basing oneself upon, and meets the hot-blast stove of China's energy policy.It has convenient and practical, pollution-free, the thermal efficiency of heating than characteristics such as height, and is easy to form standardization, commercialization production, the RFL type series of heat wind furnace of producing as Xinghuo Hot Blast Stove Factory, Harbin.But the flue gas of this class vertical barrel coal-fired hot-blast stove intersects with hot blast jacket layer two ends lateral duct, easily tears phenomenon because of the inhomogeneous generation weld seam that expands with heat and contract with cold, and easily produce hot-spot, oxidative phenomena, shortened service life of stove.In addition, be provided with the hot blast bend pipe in the burner hearth, reduced combustion volume.
The purpose of this utility model be to provide a kind of rational in infrastructure, the life-span is long, the thermal efficiency is high, the coal-firing efficient indirect hot-blast stove of dependable performance.
The purpose of this utility model be achieved in that in burner hearth, put suit a upper end be free-ended hot blast spacer, the set upper side is connected to a taper sheath in the burner hearth, the upper end of this taper sheath connects mutually with the interior set upper side of the flue gas backhaul on being enclosed within the hot blast spacer, in the flue gas backhaul, be with a flue gas backhaul overcoat between cover and the stove overcoat, the lower end of cover links to each other the upper end air duct of this overcoat with the lower end of flue gas backhaul overcoat in the flue gas backhaul.Hot blast backhaul and flue gas backhaul have been formed by the several covers between stove bore inner casing and the stove overcoat like this, cancel flue gas and hot blast backhaul two ends and intersected pipeline, body of heater respectively overlaps top does not have the lateral stiffness connection, retractable, so can not tear phenomenon because of expand with heat and contract with cold inhomogeneous generation distortion and weld seam, do not have the hot-spot oxidative phenomena yet and produce, removed loaded down with trivial details structures such as expansion loop simultaneously from.
In order to improve the service life of stove, coal filling hole of the present utility model, exhanst gas outlet and cleaning door have all been taked the structure that can freely stretch with expanding with heat and contract with cold; Furnace lining is divided into three of upper, middle and lower, in the middle refractory lining outside one block casting iron furnace lining is housed, and it has the effect of protection stove bore inner casing, and easily changes; In flue gas backhaul bottom, notched toroidal membrane is equipped with in the upper end of exhanst gas outlet, and it can make flue gas along the circumferential direction be evenly distributed, and causes the hot-spot phenomenon to avoid fume centralized in exhanst gas outlet one side; The lower end of flue gas backhaul is provided with supporting leg, in case the inside and outside cover of flue gas backhaul is sagging.
The utility model has been installed heat-insulation layer in the bottom of stove, and it can reduce thermal loss, improves the thermal efficiency; Airduct is divided into two sections, and control valve has been installed on airduct, can regulate according to the smoke condition of discharging, and makes burning more abundant.
One cold wind adjuster being installed, further guaranteed the reliability of stove work with coal combustion position equal-height position.
The utlity model has simple in structure, compact, cost is low, energy-conservation, characteristics such as the thermal efficiency is high, the life-span is long.
Fig. 1 is the surface structure schematic diagram of the utility model coal-firing efficient indirect hot-blast stove.
Fig. 2 is the internal structure schematic diagram of the utility model coal-firing efficient indirect hot-blast stove.
Fig. 3 is the utility model coal-firing efficient indirect hot-blast stove coal filling hole structural representation.
Fig. 4 is the utility model coal-firing efficient indirect hot-blast stove cold wind controller structure schematic diagram.
Below in conjunction with accompanying drawing the utility model is further described.
Shown in Figure 2 as Fig. 1,1 is that hot-blast outlet, 2 is the stove bore inner casing for hot blast spacer, 11 for cover in the flue gas backhaul, 10 for flue gas backhaul overcoat, 9 for stove overcoat, 8 for cleaning door, 7 for cold wind adjuster, 5 for coal filling hole, 4 for exhanst gas outlet, 3.The lower end welding of stove bore inner casing 11 upper ends and taper sheath 15, the upper end of cover 9 welding in the upper end of taper sheath 15 and the flue gas backhaul; The upper end of flue gas backhaul overcoat 8 and the bottom seam of airduct 12, a head protector 13 is equipped with on airduct 12 tops, and stove overcoat 7 and hot blast spacer 10 upper ends are free end, and body of heater respectively overlaps top does not have the lateral stiffness connection, can freely stretch with expanding with heat and contract with cold.One toroidal membrane 22 is arranged at the flue gas backhaul bottom of forming at flue gas backhaul overcoat 8, interior cover 9, and this toroidal membrane has breach; Blower fan has all been installed at exhanst gas outlet 2 and hot-blast outlet 1 place.As among Fig. 2 → shown in: flue gas is entered in the stove upper taper cover 15 by lower furnace portion, runs into the secondary wind that is entered stove by airduct 12 above taper sheath 15; As among Fig. 2 → shown in: flue gas mixes with secondary wind, enters behind the sufficient combustion by in the cover 9 flue gas backhauls of forming in flue gas backhaul overcoat 8 and the flue gas backhaul, and the breach by toroidal membrane 22 evenly flows out afterwards, exhanst gas outlet 2 discharges through toroidal membrane 22 bottoms.One control valve 14 is housed on the airduct 12,, makes burning more abundant by regulating the intake that this valve changes secondary wind.As among Fig. 2 → shown in, cold air is sucked by furnace roof, enter in the outer backhaul of hot blast of stove overcoat 7 and flue gas backhaul overcoat 8 compositions, be folded to by in the backhaul in cover 9 in the flue gas backhaul and the hot blast formed of hot blast spacer 10 by the bottom subsequently, then in top horn shape backhaul folds into the hot blast of being made up of hot blast spacer 10 and stove bore inner casing 11 in the backhaul, the orifice plate 17 in uniform hole enters hot-blast outlet 1 after the stove bottom along the circumferential direction has not.Stove bore inner casing 11 inboards be provided with down refractory lining 20, middle refractory lining 24, cast iron furnace lining 23, on refractory lining 25.At exhanst gas outlet 2 offsides cleaning door 5 is installed, makes ash discharge more convenient, exhanst gas outlet 2 and cleaning door 5 all do not have rigid connection with stove overcoat 7, retractable when expanding with heat and contract with cold, and be provided with catch 21 in stove overcoat 7 outsides.Grate is equipped with in the bottom of cover 9 in flue gas backhaul overcoat 8 and flue gas backhaul, and 16 is fin.
As shown in Figure 3, coal filling hole 3 has been taked the structure that can freely stretch with expanding with heat and contract with cold, 26 is cover in the coal filling hole, it puts in stove bore inner casing 11, and with its connection, as seam, being enclosed within the coal filling hole on the cover 26 is coal filling hole overcoat 27, and this overcoat 27 stretches out the outer end of stove and connects mutually with stove overcoat 7, and 28 is baffle plate, it connects mutually with the interior cover 26 of coal filling hole, orifice plate 17 and coal filling hole overcoat 27 no rigid connections are between baffle plate 28 and stove overcoat 7, all formed the slit between cover 26 and the coal filling hole overcoat 27 in the coal filling hole, as among the figure → shown in, cold air stove bore inner casing 11 outsides of can going directly so just can be played the effect of timely cooling to coal filling hole 3 and stove bore inner casing.Cover has refractory lining 29 for 26 li in the coal filling hole, and coal filling hole is shielded.
Fig. 4 is at the cold wind adjuster of installing with contour position, coal combustion position 4 that can regulate hot blast temperature automatically, as shown in FIG., 31 is the big housing that an elongated slot is respectively opened in both sides, screw rod 30 is arranged in it, the piston 33 of move left and right thereon is housed on the screw rod, these piston both sides are respectively adorned a nut 32 and are had locking effect, in the big housing 31 stage clip 34 is housed, stage clip one side is pressed on the piston 33, opposite side is pressed on the end face of the small shell 35 that connects mutually with big housing 31, electromagnet 36 is housed in the small shell 35, and screw rod 30 connects mutually with an end of electromagnet 36, and the other end of electromagnet 36 is fixed on the small shell 35.When hot blast temperature was in the temperature range of regulation, electromagnet was in off-position, and blocked the elongated slot of big housing 31 because the effect of stage clip 34 makes piston 33 be in the high order end position this moment, and no cold air enters.When hot blast temperature is higher than a certain setting in the stove, electromagnet 36 energising adhesives, screw rod 30 hauls piston 33 and moves to right, and cold air promptly enters the stove in the hot blast in the backhaul from the elongated slot of the big housing 31 in piston 33 left sides.When hot blast temperature is reduced to desired scope, electromagnet 36 outages, stage clip 34 is pushed piston to the high order end position, and no cold air enters.Cold wind adjuster 4 has guaranteed the unlikely desired temperature range of oven dry material that surpasses of hot blast temperature that hot-blast stove produces, and has guaranteed the quality of oven dry back material.In addition, the cold wind that is entered by it can cool off stove bore inner casing 11, avoids producing superheating phenomenon.
Claims (10)
1, a kind of coal-firing efficient indirect hot-blast stove comprises blower fan, hot-blast outlet (1), exhanst gas outlet (2), coal filling hole (3), cold wind adjuster (4), stove overcoat (7), stove bore inner casing (11), airduct (12), head protector (13), orifice plate (17), fire grate (18), refractory lining, it is characterized in that, the outer suit of stove bore inner casing (11) upper end be free-ended hot blast spacer (10), interior cover (11) upper end is connected to a taper sheath (15), flue gas backhaul interior cover (9) upper end outer with being enclosed within hot blast spacer (10), the upper end of taper sheath (15) connects mutually, in the flue gas backhaul, be with a flue gas backhaul overcoat (8) between cover (9) and the stove overcoat (7), the lower end of cover (9) links to each other the upper end air duct (12) of overcoat (8) in the flue gas backhaul with the lower end of overcoat (8).
2, coal-firing efficient indirect hot-blast stove according to claim 1, it is characterized in that, the cold wind adjuster (4) that can regulate hot blast temperature automatically is housed at coal combustion position equal-height position, this cold wind adjuster comprises the big housing (31) that has elongated slot, the small shell (35) that links with big housing, place the screw rod (30) in the big housing (31), be installed in the piston (33) on the screw rod (30), a nut (32) is respectively adorned in the piston both sides, between piston (33) and small shell (35), a stage clip (34) is housed, the electromagnet (36) that connects mutually with screw rod (30) one ends is housed in the small shell (35), and the other end of electromagnet (36) is fixed on the small shell (35).
3, coal-firing efficient indirect hot-blast stove according to claim 1 and 2, it is characterized in that, coal filling hole (3) has cover (26) in the coal filling hole that refractory lining (29) is housed in, this interior cover puts in stove bore inner casing (11) and combines as a whole with it, cover (26) is gone up suit one coal filling hole overcoat (27) in the coal filling hole, this overcoat stretches out the outer end of stove and connects mutually with stove overcoat (7), on the cover (26) baffle plate (28) has been installed in the coal filling hole outside stretching out stove.
4, coal-firing efficient indirect hot-blast stove according to claim 1 and 2 is characterized in that, a toroidal membrane (22) is equipped with in cover (9), the bottom of overcoat (8), the upper end of exhanst gas outlet (2) in the flue gas backhaul, has breach on this toroidal membrane.
5, coal-firing efficient indirect hot-blast stove according to claim 3 is characterized in that, a toroidal membrane (22) is equipped with in cover (9), the bottom of overcoat (8), the upper end of exhanst gas outlet (2) in the flue gas backhaul, has breach on this toroidal membrane.
6, coal-firing efficient indirect hot-blast stove according to claim 1, it is characterized in that, its refractory lining is divided into refractory lining (25), middle refractory lining (24), descends (20) three of refractory linings, and in middle refractory lining (24) outside removable cast iron furnace lining (23) is housed.
7, coal-firing efficient indirect hot-blast stove according to claim 1 is characterized in that, the lower end of cover (9), overcoat (8) is provided with supporting leg in the flue gas backhaul.
8, coal-firing efficient indirect hot-blast stove according to claim 1 is characterized in that airduct (12) is divided into two sections, is equipped with control valve (14) on it.
9, coal-firing efficient indirect hot-blast stove according to claim 1 is characterized in that, heat-insulation layer (6) is equipped with in the stove bottom.
10, according to claim 1 or 2 or 5 or 6 or 7 or 8 or 9 described coal-firing efficient indirect hot-blast stoves, it is characterized in that, at exhanst gas outlet (2) offside cleaning door (5) is installed, exhanst gas outlet and cleaning door all are fixed on the flue gas backhaul overcoat (8), and at stove overcoat (7) arranged outside washer (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93218311 CN2158060Y (en) | 1993-07-13 | 1993-07-13 | Coal-fired efficiency indirect heating hot-air furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93218311 CN2158060Y (en) | 1993-07-13 | 1993-07-13 | Coal-fired efficiency indirect heating hot-air furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2158060Y true CN2158060Y (en) | 1994-03-02 |
Family
ID=33798008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93218311 Expired - Fee Related CN2158060Y (en) | 1993-07-13 | 1993-07-13 | Coal-fired efficiency indirect heating hot-air furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2158060Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937333A (en) * | 2012-11-27 | 2013-02-20 | 四川省登尧机械设备有限公司 | Energy-saving hot blast heater |
| CN107120692A (en) * | 2017-05-09 | 2017-09-01 | 浙江中力工具制造有限公司 | A kind of biomass fireplace of adaptive different fuel burning |
-
1993
- 1993-07-13 CN CN 93218311 patent/CN2158060Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937333A (en) * | 2012-11-27 | 2013-02-20 | 四川省登尧机械设备有限公司 | Energy-saving hot blast heater |
| CN102937333B (en) * | 2012-11-27 | 2014-12-24 | 四川省登尧机械设备有限公司 | Energy-saving hot blast heater |
| CN107120692A (en) * | 2017-05-09 | 2017-09-01 | 浙江中力工具制造有限公司 | A kind of biomass fireplace of adaptive different fuel burning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |